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Forgot to add dumb framework! duh!

CQTexperiment
vspader 2007-10-13 02:28:53 +00:00
parent 11b5a27b35
commit d837819fd2
53 changed files with 16442 additions and 0 deletions
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503
Frameworks/Dumb/Dumb.xcodeproj/project.pbxproj Normal file
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isa = PBXTextBookmark;
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<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple Computer//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
<plist version="1.0">
<dict>
<key>CFBundleDevelopmentRegion</key>
<string>English</string>
<key>CFBundleExecutable</key>
<string>${EXECUTABLE_NAME}</string>
<key>CFBundleName</key>
<string>${PRODUCT_NAME}</string>
<key>CFBundleIconFile</key>
<string></string>
<key>CFBundleIdentifier</key>
<string>com.yourcompany.yourcocoaframework</string>
<key>CFBundleInfoDictionaryVersion</key>
<string>6.0</string>
<key>CFBundlePackageType</key>
<string>FMWK</string>
<key>CFBundleSignature</key>
<string>????</string>
<key>CFBundleVersion</key>
<string>1.0</string>
<key>NSPrincipalClass</key>
<string></string>
</dict>
</plist>

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/* _______ ____ __ ___ ___
* \ _ \ \ / \ / \ \ / / ' ' '
* | | \ \ | | || | \/ | . .
* | | | | | | || ||\ /| |
* | | | | | | || || \/ | | ' ' '
* | | | | | | || || | | . .
* | |_/ / \ \__// || | |
* /_______/ynamic \____/niversal /__\ /____\usic /| . . ibliotheque
* / \
* / . \
* dumb.h - The user header file for DUMB. / / \ \
* | < / \_
* Include this file in any of your files in | \/ /\ /
* which you wish to use the DUMB functions \_ / > /
* and variables. | \ / /
* | ' /
* Allegro users, you will probably want aldumb.h. \__/
*/
#ifndef DUMB_H
#define DUMB_H
#include <stdlib.h>
#include <stdio.h>
#ifdef __cplusplus
extern "C" {
#endif
#define DUMB_MAJOR_VERSION 0
#define DUMB_MINOR_VERSION 9
#define DUMB_REVISION_VERSION 3
#define DUMB_VERSION (DUMB_MAJOR_VERSION*10000 + DUMB_MINOR_VERSION*100 + DUMB_REVISION_VERSION)
#define DUMB_VERSION_STR "0.9.3"
#define DUMB_NAME "DUMB v"DUMB_VERSION_STR
#define DUMB_YEAR 2005
#define DUMB_MONTH 8
#define DUMB_DAY 7
#define DUMB_YEAR_STR2 "05"
#define DUMB_YEAR_STR4 "2005"
#define DUMB_MONTH_STR1 "8"
#define DUMB_DAY_STR1 "7"
#if DUMB_MONTH < 10
#define DUMB_MONTH_STR2 "0"DUMB_MONTH_STR1
#else
#define DUMB_MONTH_STR2 DUMB_MONTH_STR1
#endif
#if DUMB_DAY < 10
#define DUMB_DAY_STR2 "0"DUMB_DAY_STR1
#else
#define DUMB_DAY_STR2 DUMB_DAY_STR1
#endif
/* WARNING: The month and day were inadvertently swapped in the v0.8 release.
* Please do not compare this constant against any date in 2002. In
* any case, DUMB_VERSION is probably more useful for this purpose.
*/
#define DUMB_DATE (DUMB_YEAR*10000 + DUMB_MONTH*100 + DUMB_DAY)
#define DUMB_DATE_STR DUMB_DAY_STR1"."DUMB_MONTH_STR1"."DUMB_YEAR_STR4
#undef MIN
#undef MAX
#undef MID
#define MIN(x,y) (((x) < (y)) ? (x) : (y))
#define MAX(x,y) (((x) > (y)) ? (x) : (y))
#define MID(x,y,z) MAX((x), MIN((y), (z)))
#undef ABS
#define ABS(x) (((x) >= 0) ? (x) : (-(x)))
#ifdef DEBUGMODE
#ifndef ASSERT
#include <assert.h>
#define ASSERT(n) assert(n)
#endif
#ifndef TRACE
// it would be nice if this did actually trace ...
#define TRACE 1 ? (void)0 : (void)printf
#endif
#else
#ifndef ASSERT
#define ASSERT(n)
#endif
#ifndef TRACE
#define TRACE 1 ? (void)0 : (void)printf
#endif
#endif
#define DUMB_ID(a,b,c,d) (((unsigned int)(a) << 24) | \
((unsigned int)(b) << 16) | \
((unsigned int)(c) << 8) | \
((unsigned int)(d) ))
#ifndef LONG_LONG
#if defined __GNUC__ || defined __INTEL_COMPILER || defined __MWERKS__
#define LONG_LONG long long
#elif defined _MSC_VER || defined __WATCOMC__
#define LONG_LONG __int64
#elif defined __sgi
#define LONG_LONG long long
#else
#error 64-bit integer type unknown
#endif
#endif
#if __GNUC__ * 100 + __GNUC_MINOR__ >= 301 /* GCC 3.1+ */
#ifndef DUMB_DECLARE_DEPRECATED
#define DUMB_DECLARE_DEPRECATED
#endif
#define DUMB_DEPRECATED __attribute__((__deprecated__))
#else
#define DUMB_DEPRECATED
#endif
/* Basic Sample Type. Normal range is -0x800000 to 0x7FFFFF. */
typedef int sample_t;
/* Library Clean-up Management */
int dumb_atexit(void (*proc)(void));
void dumb_exit(void);
/* File Input Functions */
typedef struct DUMBFILE_SYSTEM
{
void *(*open)(const char *filename);
int (*skip)(void *f, long n);
int (*getc)(void *f);
long (*getnc)(char *ptr, long n, void *f);
void (*close)(void *f);
}
DUMBFILE_SYSTEM;
typedef struct DUMBFILE DUMBFILE;
void register_dumbfile_system(DUMBFILE_SYSTEM *dfs);
DUMBFILE *dumbfile_open(const char *filename);
DUMBFILE *dumbfile_open_ex(void *file, DUMBFILE_SYSTEM *dfs);
long dumbfile_pos(DUMBFILE *f);
int dumbfile_skip(DUMBFILE *f, long n);
int dumbfile_getc(DUMBFILE *f);
int dumbfile_igetw(DUMBFILE *f);
int dumbfile_mgetw(DUMBFILE *f);
long dumbfile_igetl(DUMBFILE *f);
long dumbfile_mgetl(DUMBFILE *f);
unsigned long dumbfile_cgetul(DUMBFILE *f);
signed long dumbfile_cgetsl(DUMBFILE *f);
long dumbfile_getnc(char *ptr, long n, DUMBFILE *f);
int dumbfile_error(DUMBFILE *f);
int dumbfile_close(DUMBFILE *f);
/* stdio File Input Module */
void dumb_register_stdfiles(void);
DUMBFILE *dumbfile_open_stdfile(FILE *p);
/* Memory File Input Module */
DUMBFILE *dumbfile_open_memory(const char *data, long size);
/* DUH Management */
typedef struct DUH DUH;
#define DUH_SIGNATURE DUMB_ID('D','U','H','!')
void unload_duh(DUH *duh);
DUH *load_duh(const char *filename);
DUH *read_duh(DUMBFILE *f);
long duh_get_length(DUH *duh);
const char *duh_get_tag(DUH *duh, const char *key);
/* Signal Rendering Functions */
typedef struct DUH_SIGRENDERER DUH_SIGRENDERER;
DUH_SIGRENDERER *duh_start_sigrenderer(DUH *duh, int sig, int n_channels, long pos);
#ifdef DUMB_DECLARE_DEPRECATED
typedef void (*DUH_SIGRENDERER_CALLBACK)(void *data, sample_t **samples, int n_channels, long length);
/* This is deprecated, but is not marked as such because GCC tends to
* complain spuriously when the typedef is used later. See comments below.
*/
void duh_sigrenderer_set_callback(
DUH_SIGRENDERER *sigrenderer,
DUH_SIGRENDERER_CALLBACK callback, void *data
) DUMB_DEPRECATED;
/* The 'callback' argument's type has changed for const-correctness. See the
* DUH_SIGRENDERER_CALLBACK definition just above. Also note that the samples
* in the buffer are now 256 times as large; the normal range is -0x800000 to
* 0x7FFFFF. The function has been renamed partly because its functionality
* has changed slightly and partly so that its name is more meaningful. The
* new one is duh_sigrenderer_set_analyser_callback(), and the typedef for
* the function pointer has also changed, from DUH_SIGRENDERER_CALLBACK to
* DUH_SIGRENDERER_ANALYSER_CALLBACK. (If you wanted to use this callback to
* apply a DSP effect, don't worry; there is a better way of doing this. It
* is undocumented, so contact me and I shall try to help. Contact details
* are in readme.txt.)
*/
typedef void (*DUH_SIGRENDERER_ANALYSER_CALLBACK)(void *data, const sample_t *const *samples, int n_channels, long length);
/* This is deprecated, but is not marked as such because GCC tends to
* complain spuriously when the typedef is used later. See comments below.
*/
void duh_sigrenderer_set_analyser_callback(
DUH_SIGRENDERER *sigrenderer,
DUH_SIGRENDERER_ANALYSER_CALLBACK callback, void *data
) DUMB_DEPRECATED;
/* This is deprecated because the meaning of the 'samples' parameter in the
* callback needed to change. For stereo applications, the array used to be
* indexed with samples[channel][pos]. It is now indexed with
* samples[0][pos*2+channel]. Mono sample data are still indexed with
* samples[0][pos]. The array is still 2D because samples will probably only
* ever be interleaved in twos. In order to fix your code, adapt it to the
* new sample layout and then call
* duh_sigrenderer_set_sample_analyser_callback below instead of this
* function.
*/
#endif
typedef void (*DUH_SIGRENDERER_SAMPLE_ANALYSER_CALLBACK)(void *data, const sample_t *const *samples, int n_channels, long length);
void duh_sigrenderer_set_sample_analyser_callback(
DUH_SIGRENDERER *sigrenderer,
DUH_SIGRENDERER_SAMPLE_ANALYSER_CALLBACK callback, void *data
);
int duh_sigrenderer_get_n_channels(DUH_SIGRENDERER *sigrenderer);
long duh_sigrenderer_get_position(DUH_SIGRENDERER *sigrenderer);
void duh_sigrenderer_set_sigparam(DUH_SIGRENDERER *sigrenderer, unsigned char id, long value);
#ifdef DUMB_DECLARE_DEPRECATED
long duh_sigrenderer_get_samples(
DUH_SIGRENDERER *sigrenderer,
float volume, float delta,
long size, sample_t **samples
) DUMB_DEPRECATED;
/* The sample format has changed, so if you were using this function,
* you should switch to duh_sigrenderer_generate_samples() and change
* how you interpret the samples array. See the comments for
* duh_sigrenderer_set_analyser_callback().
*/
#endif
long duh_sigrenderer_generate_samples(
DUH_SIGRENDERER *sigrenderer,
float volume, float delta,
long size, sample_t **samples
);
void duh_sigrenderer_get_current_sample(DUH_SIGRENDERER *sigrenderer, float volume, sample_t *samples);
void duh_end_sigrenderer(DUH_SIGRENDERER *sigrenderer);
/* DUH Rendering Functions */
long duh_render(
DUH_SIGRENDERER *sigrenderer,
int bits, int unsign,
float volume, float delta,
long size, void *sptr
);
#ifdef DUMB_DECLARE_DEPRECATED
long duh_render_signal(
DUH_SIGRENDERER *sigrenderer,
float volume, float delta,
long size, sample_t **samples
) DUMB_DEPRECATED;
/* Please use duh_sigrenderer_generate_samples(), and see the
* comments for the deprecated duh_sigrenderer_get_samples() too.
*/
typedef DUH_SIGRENDERER DUH_RENDERER DUMB_DEPRECATED;
/* Please use DUH_SIGRENDERER instead of DUH_RENDERER. */
DUH_SIGRENDERER *duh_start_renderer(DUH *duh, int n_channels, long pos) DUMB_DEPRECATED;
/* Please use duh_start_sigrenderer() instead. Pass 0 for 'sig'. */
int duh_renderer_get_n_channels(DUH_SIGRENDERER *dr) DUMB_DEPRECATED;
long duh_renderer_get_position(DUH_SIGRENDERER *dr) DUMB_DEPRECATED;
/* Please use the duh_sigrenderer_*() equivalents of these two functions. */
void duh_end_renderer(DUH_SIGRENDERER *dr) DUMB_DEPRECATED;
/* Please use duh_end_sigrenderer() instead. */
DUH_SIGRENDERER *duh_renderer_encapsulate_sigrenderer(DUH_SIGRENDERER *sigrenderer) DUMB_DEPRECATED;
DUH_SIGRENDERER *duh_renderer_get_sigrenderer(DUH_SIGRENDERER *dr) DUMB_DEPRECATED;
DUH_SIGRENDERER *duh_renderer_decompose_to_sigrenderer(DUH_SIGRENDERER *dr) DUMB_DEPRECATED;
/* These functions have become no-ops that just return the parameter.
* So, for instance, replace
* duh_renderer_encapsulate_sigrenderer(my_sigrenderer)
* with
* my_sigrenderer
*/
#endif
/* Impulse Tracker Support */
extern int dumb_it_max_to_mix;
typedef struct DUMB_IT_SIGDATA DUMB_IT_SIGDATA;
typedef struct DUMB_IT_SIGRENDERER DUMB_IT_SIGRENDERER;
DUMB_IT_SIGDATA *duh_get_it_sigdata(DUH *duh);
DUH_SIGRENDERER *duh_encapsulate_it_sigrenderer(DUMB_IT_SIGRENDERER *it_sigrenderer, int n_channels, long pos);
DUMB_IT_SIGRENDERER *duh_get_it_sigrenderer(DUH_SIGRENDERER *sigrenderer);
DUH_SIGRENDERER *dumb_it_start_at_order(DUH *duh, int n_channels, int startorder);
void dumb_it_set_loop_callback(DUMB_IT_SIGRENDERER *sigrenderer, int (*callback)(void *data), void *data);
void dumb_it_set_xm_speed_zero_callback(DUMB_IT_SIGRENDERER *sigrenderer, int (*callback)(void *data), void *data);
void dumb_it_set_midi_callback(DUMB_IT_SIGRENDERER *sigrenderer, int (*callback)(void *data, int channel, unsigned char midi_byte), void *data);
int dumb_it_callback_terminate(void *data);
int dumb_it_callback_midi_block(void *data, int channel, unsigned char midi_byte);
DUH *dumb_load_it(const char *filename);
DUH *dumb_load_xm(const char *filename);
DUH *dumb_load_s3m(const char *filename);
DUH *dumb_load_mod(const char *filename);
DUH *dumb_read_it(DUMBFILE *f);
DUH *dumb_read_xm(DUMBFILE *f);
DUH *dumb_read_s3m(DUMBFILE *f);
DUH *dumb_read_mod(DUMBFILE *f);
DUH *dumb_load_it_quick(const char *filename);
DUH *dumb_load_xm_quick(const char *filename);
DUH *dumb_load_s3m_quick(const char *filename);
DUH *dumb_load_mod_quick(const char *filename);
DUH *dumb_read_it_quick(DUMBFILE *f);
DUH *dumb_read_xm_quick(DUMBFILE *f);
DUH *dumb_read_s3m_quick(DUMBFILE *f);
DUH *dumb_read_mod_quick(DUMBFILE *f);
long dumb_it_build_checkpoints(DUMB_IT_SIGDATA *sigdata);
void dumb_it_do_initial_runthrough(DUH *duh);
const unsigned char *dumb_it_sd_get_song_message(DUMB_IT_SIGDATA *sd);
int dumb_it_sd_get_n_orders(DUMB_IT_SIGDATA *sd);
int dumb_it_sd_get_n_samples(DUMB_IT_SIGDATA *sd);
int dumb_it_sd_get_n_instruments(DUMB_IT_SIGDATA *sd);
const unsigned char *dumb_it_sd_get_sample_name(DUMB_IT_SIGDATA *sd, int i);
const unsigned char *dumb_it_sd_get_sample_filename(DUMB_IT_SIGDATA *sd, int i);
const unsigned char *dumb_it_sd_get_instrument_name(DUMB_IT_SIGDATA *sd, int i);
const unsigned char *dumb_it_sd_get_instrument_filename(DUMB_IT_SIGDATA *sd, int i);
int dumb_it_sd_get_initial_global_volume(DUMB_IT_SIGDATA *sd);
void dumb_it_sd_set_initial_global_volume(DUMB_IT_SIGDATA *sd, int gv);
int dumb_it_sd_get_mixing_volume(DUMB_IT_SIGDATA *sd);
void dumb_it_sd_set_mixing_volume(DUMB_IT_SIGDATA *sd, int mv);
int dumb_it_sd_get_initial_speed(DUMB_IT_SIGDATA *sd);
void dumb_it_sd_set_initial_speed(DUMB_IT_SIGDATA *sd, int speed);
int dumb_it_sd_get_initial_tempo(DUMB_IT_SIGDATA *sd);
void dumb_it_sd_set_initial_tempo(DUMB_IT_SIGDATA *sd, int tempo);
int dumb_it_sd_get_initial_channel_volume(DUMB_IT_SIGDATA *sd, int channel);
void dumb_it_sd_set_initial_channel_volume(DUMB_IT_SIGDATA *sd, int channel, int volume);
int dumb_it_sr_get_current_order(DUMB_IT_SIGRENDERER *sr);
int dumb_it_sr_get_current_row(DUMB_IT_SIGRENDERER *sr);
int dumb_it_sr_get_global_volume(DUMB_IT_SIGRENDERER *sr);
void dumb_it_sr_set_global_volume(DUMB_IT_SIGRENDERER *sr, int gv);
int dumb_it_sr_get_tempo(DUMB_IT_SIGRENDERER *sr);
void dumb_it_sr_set_tempo(DUMB_IT_SIGRENDERER *sr, int tempo);
int dumb_it_sr_get_speed(DUMB_IT_SIGRENDERER *sr);
void dumb_it_sr_set_speed(DUMB_IT_SIGRENDERER *sr, int speed);
#define DUMB_IT_N_CHANNELS 64
#define DUMB_IT_N_NNA_CHANNELS 192
#define DUMB_IT_TOTAL_CHANNELS (DUMB_IT_N_CHANNELS + DUMB_IT_N_NNA_CHANNELS)
/* Channels passed to any of these functions are 0-based */
int dumb_it_sr_get_channel_volume(DUMB_IT_SIGRENDERER *sr, int channel);
void dumb_it_sr_set_channel_volume(DUMB_IT_SIGRENDERER *sr, int channel, int volume);
int dumb_it_sr_get_channel_muted(DUMB_IT_SIGRENDERER *sr, int channel);
void dumb_it_sr_set_channel_muted(DUMB_IT_SIGRENDERER *sr, int channel, int muted);
typedef struct DUMB_IT_CHANNEL_STATE DUMB_IT_CHANNEL_STATE;
struct DUMB_IT_CHANNEL_STATE
{
int channel; /* 0-based; meaningful for NNA channels */
int sample; /* 1-based; 0 if nothing playing, then other fields undef */
int freq; /* in Hz */
float volume; /* 1.0 maximum; affected by ALL factors, inc. mixing vol */
unsigned char pan; /* 0-64, 100 for surround */
signed char subpan; /* use (pan + subpan/256.0f) or ((pan<<8)+subpan) */
unsigned char filter_cutoff; /* 0-127 cutoff=127 AND resonance=0 */
unsigned char filter_subcutoff; /* 0-255 -> no filters (subcutoff */
unsigned char filter_resonance; /* 0-127 always 0 in this case) */
/* subcutoff only changes from zero if filter envelopes are in use. The
* calculation (filter_cutoff + filter_subcutoff/256.0f) gives a more
* accurate filter cutoff measurement as a float. It would often be more
* useful to use a scaled int such as ((cutoff<<8) + subcutoff).
*/
};
/* Values of 64 or more will access NNA channels here. */
void dumb_it_sr_get_channel_state(DUMB_IT_SIGRENDERER *sr, int channel, DUMB_IT_CHANNEL_STATE *state);
/* Signal Design Helper Values */
/* Use pow(DUMB_SEMITONE_BASE, n) to get the 'delta' value to transpose up by
* n semitones. To transpose down, use negative n.
*/
#define DUMB_SEMITONE_BASE 1.059463094359295309843105314939748495817
/* Use pow(DUMB_QUARTERTONE_BASE, n) to get the 'delta' value to transpose up
* by n quartertones. To transpose down, use negative n.
*/
#define DUMB_QUARTERTONE_BASE 1.029302236643492074463779317738953977823
/* Use pow(DUMB_PITCH_BASE, n) to get the 'delta' value to transpose up by n
* units. In this case, 256 units represent one semitone; 3072 units
* represent one octave. These units are used by the sequence signal (SEQU).
*/
#define DUMB_PITCH_BASE 1.000225659305069791926712241547647863626
/* Signal Design Function Types */
typedef void sigdata_t;
typedef void sigrenderer_t;
typedef sigdata_t *(*DUH_LOAD_SIGDATA)(DUH *duh, DUMBFILE *file);
typedef sigrenderer_t *(*DUH_START_SIGRENDERER)(
DUH *duh,
sigdata_t *sigdata,
int n_channels,
long pos
);
typedef void (*DUH_SIGRENDERER_SET_SIGPARAM)(
sigrenderer_t *sigrenderer,
unsigned char id, long value
);
typedef long (*DUH_SIGRENDERER_GENERATE_SAMPLES)(
sigrenderer_t *sigrenderer,
float volume, float delta,
long size, sample_t **samples
);
typedef void (*DUH_SIGRENDERER_GET_CURRENT_SAMPLE)(
sigrenderer_t *sigrenderer,
float volume,
sample_t *samples
);
typedef void (*DUH_END_SIGRENDERER)(sigrenderer_t *sigrenderer);
typedef void (*DUH_UNLOAD_SIGDATA)(sigdata_t *sigdata);
/* Signal Design Function Registration */
typedef struct DUH_SIGTYPE_DESC
{
long type;
DUH_LOAD_SIGDATA load_sigdata;
DUH_START_SIGRENDERER start_sigrenderer;
DUH_SIGRENDERER_SET_SIGPARAM sigrenderer_set_sigparam;
DUH_SIGRENDERER_GENERATE_SAMPLES sigrenderer_generate_samples;
DUH_SIGRENDERER_GET_CURRENT_SAMPLE sigrenderer_get_current_sample;
DUH_END_SIGRENDERER end_sigrenderer;
DUH_UNLOAD_SIGDATA unload_sigdata;
}
DUH_SIGTYPE_DESC;
void dumb_register_sigtype(DUH_SIGTYPE_DESC *desc);
// Decide where to put these functions; new heading?
sigdata_t *duh_get_raw_sigdata(DUH *duh, int sig, long type);
DUH_SIGRENDERER *duh_encapsulate_raw_sigrenderer(sigrenderer_t *vsigrenderer, DUH_SIGTYPE_DESC *desc, int n_channels, long pos);
sigrenderer_t *duh_get_raw_sigrenderer(DUH_SIGRENDERER *sigrenderer, long type);
/* Standard Signal Types */
//void dumb_register_sigtype_sample(void);
/* Sample Buffer Allocation Helpers */
#ifdef DUMB_DECLARE_DEPRECATED
sample_t **create_sample_buffer(int n_channels, long length) DUMB_DEPRECATED;
/* DUMB has been changed to interleave stereo samples. Use
* allocate_sample_buffer() instead, and see the comments for
* duh_sigrenderer_set_analyser_callback().
*/
#endif
sample_t **allocate_sample_buffer(int n_channels, long length);
void destroy_sample_buffer(sample_t **samples);
/* Silencing Helper */
void dumb_silence(sample_t *samples, long length);
/* Click Removal Helpers */
typedef struct DUMB_CLICK_REMOVER DUMB_CLICK_REMOVER;
DUMB_CLICK_REMOVER *dumb_create_click_remover(void);
void dumb_record_click(DUMB_CLICK_REMOVER *cr, long pos, sample_t step);
void dumb_remove_clicks(DUMB_CLICK_REMOVER *cr, sample_t *samples, long length, int step, float halflife);
sample_t dumb_click_remover_get_offset(DUMB_CLICK_REMOVER *cr);
void dumb_destroy_click_remover(DUMB_CLICK_REMOVER *cr);
DUMB_CLICK_REMOVER **dumb_create_click_remover_array(int n);
void dumb_record_click_array(int n, DUMB_CLICK_REMOVER **cr, long pos, sample_t *step);
void dumb_record_click_negative_array(int n, DUMB_CLICK_REMOVER **cr, long pos, sample_t *step);
void dumb_remove_clicks_array(int n, DUMB_CLICK_REMOVER **cr, sample_t **samples, long length, float halflife);
void dumb_click_remover_get_offset_array(int n, DUMB_CLICK_REMOVER **cr, sample_t *offset);
void dumb_destroy_click_remover_array(int n, DUMB_CLICK_REMOVER **cr);
/* Resampling Helpers */
#define DUMB_RQ_ALIASING 0
#define DUMB_RQ_LINEAR 1
#define DUMB_RQ_CUBIC 2
#define DUMB_RQ_N_LEVELS 3
extern int dumb_resampling_quality;
typedef struct DUMB_RESAMPLER DUMB_RESAMPLER;
typedef void (*DUMB_RESAMPLE_PICKUP)(DUMB_RESAMPLER *resampler, void *data);
struct DUMB_RESAMPLER
{
void *src;
long pos;
int subpos;
long start, end;
int dir;
DUMB_RESAMPLE_PICKUP pickup;
void *pickup_data;
int min_quality;
int max_quality;
/* Everything below this point is internal: do not use. */
union {
sample_t x24[3*2];
short x16[3*2];
signed char x8[3*2];
} x;
int overshot;
};
void dumb_reset_resampler(DUMB_RESAMPLER *resampler, sample_t *src, int src_channels, long pos, long start, long end);
DUMB_RESAMPLER *dumb_start_resampler(sample_t *src, int src_channels, long pos, long start, long end);
long dumb_resample_1_1(DUMB_RESAMPLER *resampler, sample_t *dst, long dst_size, float volume, float delta);
long dumb_resample_1_2(DUMB_RESAMPLER *resampler, sample_t *dst, long dst_size, float volume_left, float volume_right, float delta);
long dumb_resample_2_1(DUMB_RESAMPLER *resampler, sample_t *dst, long dst_size, float volume_left, float volume_right, float delta);
long dumb_resample_2_2(DUMB_RESAMPLER *resampler, sample_t *dst, long dst_size, float volume_left, float volume_right, float delta);
void dumb_resample_get_current_sample_1_1(DUMB_RESAMPLER *resampler, float volume, sample_t *dst);
void dumb_resample_get_current_sample_1_2(DUMB_RESAMPLER *resampler, float volume_left, float volume_right, sample_t *dst);
void dumb_resample_get_current_sample_2_1(DUMB_RESAMPLER *resampler, float volume_left, float volume_right, sample_t *dst);
void dumb_resample_get_current_sample_2_2(DUMB_RESAMPLER *resampler, float volume_left, float volume_right, sample_t *dst);
void dumb_end_resampler(DUMB_RESAMPLER *resampler);
void dumb_reset_resampler_16(DUMB_RESAMPLER *resampler, short *src, int src_channels, long pos, long start, long end);
DUMB_RESAMPLER *dumb_start_resampler_16(short *src, int src_channels, long pos, long start, long end);
long dumb_resample_16_1_1(DUMB_RESAMPLER *resampler, sample_t *dst, long dst_size, float volume, float delta);
long dumb_resample_16_1_2(DUMB_RESAMPLER *resampler, sample_t *dst, long dst_size, float volume_left, float volume_right, float delta);
long dumb_resample_16_2_1(DUMB_RESAMPLER *resampler, sample_t *dst, long dst_size, float volume_left, float volume_right, float delta);
long dumb_resample_16_2_2(DUMB_RESAMPLER *resampler, sample_t *dst, long dst_size, float volume_left, float volume_right, float delta);
void dumb_resample_get_current_sample_16_1_1(DUMB_RESAMPLER *resampler, float volume, sample_t *dst);
void dumb_resample_get_current_sample_16_1_2(DUMB_RESAMPLER *resampler, float volume_left, float volume_right, sample_t *dst);
void dumb_resample_get_current_sample_16_2_1(DUMB_RESAMPLER *resampler, float volume_left, float volume_right, sample_t *dst);
void dumb_resample_get_current_sample_16_2_2(DUMB_RESAMPLER *resampler, float volume_left, float volume_right, sample_t *dst);
void dumb_end_resampler_16(DUMB_RESAMPLER *resampler);
void dumb_reset_resampler_8(DUMB_RESAMPLER *resampler, signed char *src, int src_channels, long pos, long start, long end);
DUMB_RESAMPLER *dumb_start_resampler_8(signed char *src, int src_channels, long pos, long start, long end);
long dumb_resample_8_1_1(DUMB_RESAMPLER *resampler, sample_t *dst, long dst_size, float volume, float delta);
long dumb_resample_8_1_2(DUMB_RESAMPLER *resampler, sample_t *dst, long dst_size, float volume_left, float volume_right, float delta);
long dumb_resample_8_2_1(DUMB_RESAMPLER *resampler, sample_t *dst, long dst_size, float volume_left, float volume_right, float delta);
long dumb_resample_8_2_2(DUMB_RESAMPLER *resampler, sample_t *dst, long dst_size, float volume_left, float volume_right, float delta);
void dumb_resample_get_current_sample_8_1_1(DUMB_RESAMPLER *resampler, float volume, sample_t *dst);
void dumb_resample_get_current_sample_8_1_2(DUMB_RESAMPLER *resampler, float volume_left, float volume_right, sample_t *dst);
void dumb_resample_get_current_sample_8_2_1(DUMB_RESAMPLER *resampler, float volume_left, float volume_right, sample_t *dst);
void dumb_resample_get_current_sample_8_2_2(DUMB_RESAMPLER *resampler, float volume_left, float volume_right, sample_t *dst);
void dumb_end_resampler_8(DUMB_RESAMPLER *resampler);
void dumb_reset_resampler_n(int n, DUMB_RESAMPLER *resampler, void *src, int src_channels, long pos, long start, long end);
DUMB_RESAMPLER *dumb_start_resampler_n(int n, void *src, int src_channels, long pos, long start, long end);
long dumb_resample_n_1_1(int n, DUMB_RESAMPLER *resampler, sample_t *dst, long dst_size, float volume, float delta);
long dumb_resample_n_1_2(int n, DUMB_RESAMPLER *resampler, sample_t *dst, long dst_size, float volume_left, float volume_right, float delta);
long dumb_resample_n_2_1(int n, DUMB_RESAMPLER *resampler, sample_t *dst, long dst_size, float volume_left, float volume_right, float delta);
long dumb_resample_n_2_2(int n, DUMB_RESAMPLER *resampler, sample_t *dst, long dst_size, float volume_left, float volume_right, float delta);
void dumb_resample_get_current_sample_n_1_1(int n, DUMB_RESAMPLER *resampler, float volume, sample_t *dst);
void dumb_resample_get_current_sample_n_1_2(int n, DUMB_RESAMPLER *resampler, float volume_left, float volume_right, sample_t *dst);
void dumb_resample_get_current_sample_n_2_1(int n, DUMB_RESAMPLER *resampler, float volume_left, float volume_right, sample_t *dst);
void dumb_resample_get_current_sample_n_2_2(int n, DUMB_RESAMPLER *resampler, float volume_left, float volume_right, sample_t *dst);
void dumb_end_resampler_n(int n, DUMB_RESAMPLER *resampler);
/* DUH Construction */
DUH *make_duh(
long length,
int n_tags,
const char *const tag[][2],
int n_signals,
DUH_SIGTYPE_DESC *desc[],
sigdata_t *sigdata[]
);
void duh_set_length(DUH *duh, long length);
#ifdef __cplusplus
}
#endif
#endif /* DUMB_H */

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/* _______ ____ __ ___ ___
* \ _ \ \ / \ / \ \ / / ' ' '
* | | \ \ | | || | \/ | . .
* | | | | | | || ||\ /| |
* | | | | | | || || \/ | | ' ' '
* | | | | | | || || | | . .
* | |_/ / \ \__// || | |
* /_______/ynamic \____/niversal /__\ /____\usic /| . . ibliotheque
* / \
* / . \
* internal/dumb.h - DUMB's internal declarations. / / \ \
* | < / \_
* This header file provides access to the | \/ /\ /
* internal structure of DUMB, and is liable \_ / > /
* to change, mutate or cease to exist at any | \ / /
* moment. Include it at your own peril. | ' /
* \__/
* ...
*
* Seriously. You don't need access to anything in this file. All right, you
* probably do actually. But if you use it, you will be relying on a specific
* version of DUMB, so please check DUMB_VERSION defined in dumb.h. Please
* contact the authors so that we can provide a public API for what you need.
*/
#ifndef INTERNAL_DUMB_H
#define INTERNAL_DUMB_H
typedef struct DUH_SIGTYPE_DESC_LINK
{
struct DUH_SIGTYPE_DESC_LINK *next;
DUH_SIGTYPE_DESC *desc;
}
DUH_SIGTYPE_DESC_LINK;
typedef struct DUH_SIGNAL
{
sigdata_t *sigdata;
DUH_SIGTYPE_DESC *desc;
}
DUH_SIGNAL;
struct DUH
{
long length;
int n_tags;
char *(*tag)[2];
int n_signals;
DUH_SIGNAL **signal;
};
DUH_SIGTYPE_DESC *_dumb_get_sigtype_desc(long type);
#endif /* INTERNAL_DUMB_H */

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/* _______ ____ __ ___ ___
* \ _ \ \ / \ / \ \ / / ' ' '
* | | \ \ | | || | \/ | . .
* | | | | | | || ||\ /| |
* | | | | | | || || \/ | | ' ' '
* | | | | | | || || | | . .
* | |_/ / \ \__// || | |
* /_______/ynamic \____/niversal /__\ /____\usic /| . . ibliotheque
* / \
* / . \
* internal/it.h - Internal stuff for IT playback / / \ \
* and MOD/XM/S3M conversion. | < / \_
* | \/ /\ /
* This header file provides access to the \_ / > /
* internal structure of DUMB, and is liable | \ / /
* to change, mutate or cease to exist at any | ' /
* moment. Include it at your own peril. \__/
*
* ...
*
* Seriously. You don't need access to anything in this file. All right, you
* probably do actually. But if you use it, you will be relying on a specific
* version of DUMB, so please check DUMB_VERSION defined in dumb.h. Please
* contact the authors so that we can provide a public API for what you need.
*/
#ifndef INTERNAL_IT_H
#define INTERNAL_IT_H
#include <stddef.h>
/** TO DO: THINK ABOUT THE FOLLOWING:
sigdata->flags & IT_COMPATIBLE_GXX
Bit 5: On = Link Effect G's memory with Effect E/F. Also
Gxx with an instrument present will cause the
envelopes to be retriggered. If you change a
sample on a row with Gxx, it'll adjust the
frequency of the current note according to:
NewFrequency = OldFrequency * NewC5 / OldC5;
*/
/* These #defines are TEMPORARY. They are used to write alternative code to
* handle ambiguities in the format specification. The correct code in each
* case will be determined most likely by experimentation.
*/
#define STEREO_SAMPLES_COUNT_AS_TWO
#define INVALID_ORDERS_END_SONG
#define INVALID_NOTES_CAUSE_NOTE_CUT
#define SUSTAIN_LOOP_OVERRIDES_NORMAL_LOOP
#define VOLUME_OUT_OF_RANGE_SETS_MAXIMUM
#define SIGTYPE_IT DUMB_ID('I', 'T', ' ', ' ')
#define IT_SIGNATURE DUMB_ID('I', 'M', 'P', 'M')
#define IT_INSTRUMENT_SIGNATURE DUMB_ID('I', 'M', 'P', 'I')
#define IT_SAMPLE_SIGNATURE DUMB_ID('I', 'M', 'P', 'S')
/* 1 minute per 4 rows, each row 6 ticks; this is divided by the tempo to get
* the interval between ticks.
*/
#define TICK_TIME_DIVIDEND ((65536 * 60) / (4 * 6))
/* I'm not going to try to explain this, because I didn't derive it very
* formally ;)
*/
/* #define AMIGA_DIVISOR ((float)(4.0 * 14317056.0)) */
/* I believe the following one to be more accurate. */
#define AMIGA_DIVISOR ((float)(8.0 * 7159090.5))
typedef struct IT_MIDI IT_MIDI;
typedef struct IT_FILTER_STATE IT_FILTER_STATE;
typedef struct IT_ENVELOPE IT_ENVELOPE;
typedef struct IT_INSTRUMENT IT_INSTRUMENT;
typedef struct IT_SAMPLE IT_SAMPLE;
typedef struct IT_ENTRY IT_ENTRY;
typedef struct IT_PATTERN IT_PATTERN;
typedef struct IT_PLAYING_ENVELOPE IT_PLAYING_ENVELOPE;
typedef struct IT_PLAYING IT_PLAYING;
typedef struct IT_CHANNEL IT_CHANNEL;
typedef struct IT_CHECKPOINT IT_CHECKPOINT;
typedef struct IT_CALLBACKS IT_CALLBACKS;
struct IT_MIDI
{
unsigned char SFmacro[16][16]; // read these from 0x120
unsigned char SFmacrolen[16];
unsigned short SFmacroz[16]; /* Bitfield; bit 0 set = z in first position */
unsigned char Zmacro[128][16]; // read these from 0x320
unsigned char Zmacrolen[128];
};
struct IT_FILTER_STATE
{
sample_t currsample, prevsample;
};
#define IT_ENVELOPE_ON 1
#define IT_ENVELOPE_LOOP_ON 2
#define IT_ENVELOPE_SUSTAIN_LOOP 4
#define IT_ENVELOPE_PITCH_IS_FILTER 128
struct IT_ENVELOPE
{
unsigned char flags;
unsigned char n_nodes;
unsigned char loop_start;
unsigned char loop_end;
unsigned char sus_loop_start;
unsigned char sus_loop_end;
signed char node_y[25];
unsigned short node_t[25];
};
#define NNA_NOTE_CUT 0
#define NNA_NOTE_CONTINUE 1
#define NNA_NOTE_OFF 2
#define NNA_NOTE_FADE 3
#define DCT_OFF 0
#define DCT_NOTE 1
#define DCT_SAMPLE 2
#define DCT_INSTRUMENT 3
#define DCA_NOTE_CUT 0
#define DCA_NOTE_OFF 1
#define DCA_NOTE_FADE 2
struct IT_INSTRUMENT
{
unsigned char name[27];
unsigned char filename[14];
int fadeout;
IT_ENVELOPE volume_envelope;
IT_ENVELOPE pan_envelope;
IT_ENVELOPE pitch_envelope;
unsigned char new_note_action;
unsigned char dup_check_type;
unsigned char dup_check_action;
unsigned char pp_separation;
unsigned char pp_centre;
unsigned char global_volume;
unsigned char default_pan;
unsigned char random_volume;
unsigned char random_pan;
unsigned char filter_cutoff;
unsigned char filter_resonance;
unsigned char map_note[120];
unsigned short map_sample[120];
};
#define IT_SAMPLE_EXISTS 1
#define IT_SAMPLE_16BIT 2
#define IT_SAMPLE_STEREO 4
#define IT_SAMPLE_LOOP 16
#define IT_SAMPLE_SUS_LOOP 32
#define IT_SAMPLE_PINGPONG_LOOP 64
#define IT_SAMPLE_PINGPONG_SUS_LOOP 128
#define IT_VIBRATO_SINE 0
#define IT_VIBRATO_SAWTOOTH 1 /* Ramp down */
#define IT_VIBRATO_SQUARE 2
#define IT_VIBRATO_RANDOM 3
struct IT_SAMPLE
{
unsigned char name[29];
unsigned char filename[14];
unsigned char flags;
unsigned char global_volume;
unsigned char default_volume;
unsigned char default_pan;
/* default_pan:
* 0-255 for XM
* ignored for MOD
* otherwise, 0-64, and add 128 to enable
*/
long length;
long loop_start;
long loop_end;
long C5_speed;
long sus_loop_start;
long sus_loop_end;
unsigned char vibrato_speed;
unsigned char vibrato_depth;
unsigned char vibrato_rate;
unsigned char vibrato_waveform;
void *data;
};
#define IT_ENTRY_NOTE 1
#define IT_ENTRY_INSTRUMENT 2
#define IT_ENTRY_VOLPAN 4
#define IT_ENTRY_EFFECT 8
#define IT_SET_END_ROW(entry) ((entry)->channel = 255)
#define IT_IS_END_ROW(entry) ((entry)->channel >= DUMB_IT_N_CHANNELS)
#define IT_NOTE_OFF 255
#define IT_NOTE_CUT 254
#define IT_ENVELOPE_SHIFT 8
#define IT_SURROUND 100
#define IT_IS_SURROUND(pan) ((pan) > 64)
#define IT_IS_SURROUND_SHIFTED(pan) ((pan) > 64 << IT_ENVELOPE_SHIFT)
#define IT_SET_SPEED 1
#define IT_JUMP_TO_ORDER 2
#define IT_BREAK_TO_ROW 3
#define IT_VOLUME_SLIDE 4
#define IT_PORTAMENTO_DOWN 5
#define IT_PORTAMENTO_UP 6
#define IT_TONE_PORTAMENTO 7
#define IT_VIBRATO 8
#define IT_TREMOR 9
#define IT_ARPEGGIO 10
#define IT_VOLSLIDE_VIBRATO 11
#define IT_VOLSLIDE_TONEPORTA 12
#define IT_SET_CHANNEL_VOLUME 13
#define IT_CHANNEL_VOLUME_SLIDE 14
#define IT_SET_SAMPLE_OFFSET 15
#define IT_PANNING_SLIDE 16
#define IT_RETRIGGER_NOTE 17
#define IT_TREMOLO 18
#define IT_S 19
#define IT_SET_SONG_TEMPO 20
#define IT_FINE_VIBRATO 21
#define IT_SET_GLOBAL_VOLUME 22
#define IT_GLOBAL_VOLUME_SLIDE 23
#define IT_SET_PANNING 24
#define IT_PANBRELLO 25
#define IT_MIDI_MACRO 26 //see MIDI.TXT
/* Some effects needed for XM compatibility */
#define IT_XM_PORTAMENTO_DOWN 27
#define IT_XM_PORTAMENTO_UP 28
#define IT_XM_FINE_VOLSLIDE_DOWN 29
#define IT_XM_FINE_VOLSLIDE_UP 30
#define IT_XM_RETRIGGER_NOTE 31
#define IT_XM_KEY_OFF 32
#define IT_XM_SET_ENVELOPE_POSITION 33
#define IT_N_EFFECTS 34
/* These represent the top nibble of the command value. */
#define IT_S_SET_FILTER 0 /* Greyed out in IT... */
#define IT_S_SET_GLISSANDO_CONTROL 1 /* Greyed out in IT... */
#define IT_S_FINETUNE 2 /* Greyed out in IT... */
#define IT_S_SET_VIBRATO_WAVEFORM 3
#define IT_S_SET_TREMOLO_WAVEFORM 4
#define IT_S_SET_PANBRELLO_WAVEFORM 5
#define IT_S_FINE_PATTERN_DELAY 6
#define IT_S7 7
#define IT_S_SET_PAN 8
#define IT_S_SET_SURROUND_SOUND 9
#define IT_S_SET_HIGH_OFFSET 10
#define IT_S_PATTERN_LOOP 11
#define IT_S_DELAYED_NOTE_CUT 12
#define IT_S_NOTE_DELAY 13
#define IT_S_PATTERN_DELAY 14
#define IT_S_SET_MIDI_MACRO 15
/*
S0x Set filter
S1x Set glissando control
S2x Set finetune
S3x Set vibrato waveform to type x
S4x Set tremelo waveform to type x
S5x Set panbrello waveform to type x
Waveforms for commands S3x, S4x and S5x:
0: Sine wave
1: Ramp down
2: Square wave
3: Random wave
S6x Pattern delay for x ticks
S70 Past note cut
S71 Past note off
S72 Past note fade
S73 Set NNA to note cut
S74 Set NNA to continue
S75 Set NNA to note off
S76 Set NNA to note fade
S77 Turn off volume envelope
S78 Turn on volume envelope
S79 Turn off panning envelope
S7A Turn on panning envelope
S7B Turn off pitch envelope
S7C Turn on pitch envelope
S8x Set panning position
S91 Set surround sound
SAy Set high value of sample offset yxx00h
SB0 Set loopback point
SBx Loop x times to loopback point
SCx Note cut after x ticks
SDx Note delay for x ticks
SEx Pattern delay for x rows
SFx Set parameterised MIDI Macro
*/
struct IT_ENTRY
{
unsigned char channel; /* End of row if channel >= DUMB_IT_N_CHANNELS */
unsigned char mask;
unsigned char note;
unsigned char instrument;
unsigned char volpan;
unsigned char effect;
unsigned char effectvalue;
};
struct IT_PATTERN
{
int n_rows;
int n_entries;
IT_ENTRY *entry;
};
#define IT_STEREO 1
#define IT_USE_INSTRUMENTS 4
#define IT_LINEAR_SLIDES 8 /* If not set, use Amiga slides */
#define IT_OLD_EFFECTS 16
#define IT_COMPATIBLE_GXX 32
/* Make sure IT_WAS_AN_XM and IT_WAS_A_MOD aren't set accidentally */
#define IT_REAL_FLAGS 63
#define IT_WAS_AN_XM 64 /* Set for both XMs and MODs */
#define IT_WAS_A_MOD 128
#define IT_ORDER_END 255
#define IT_ORDER_SKIP 254
struct DUMB_IT_SIGDATA
{
unsigned char name[29];
unsigned char *song_message;
int n_orders;
int n_instruments;
int n_samples;
int n_patterns;
int flags;
int global_volume;
int mixing_volume;
int speed;
int tempo;
int pan_separation;
unsigned char channel_pan[DUMB_IT_N_CHANNELS];
unsigned char channel_volume[DUMB_IT_N_CHANNELS];
unsigned char *order;
unsigned char restart_position; /* for XM compatiblity */
IT_INSTRUMENT *instrument;
IT_SAMPLE *sample;
IT_PATTERN *pattern;
IT_MIDI *midi;
IT_CHECKPOINT *checkpoint;
};
struct IT_PLAYING_ENVELOPE
{
int next_node;
int tick;
int value;
};
#define IT_PLAYING_BACKGROUND 1
#define IT_PLAYING_SUSTAINOFF 2
#define IT_PLAYING_FADING 4
#define IT_PLAYING_DEAD 8
struct IT_PLAYING
{
int flags;
IT_CHANNEL *channel;
IT_SAMPLE *sample;
IT_INSTRUMENT *instrument;
IT_INSTRUMENT *env_instrument;
unsigned short sampnum;
unsigned char instnum;
unsigned char channel_volume;
unsigned char volume;
unsigned short pan;
unsigned char note;
unsigned char filter_cutoff;
unsigned char filter_resonance;
unsigned short true_filter_cutoff; /* These incorporate the filter envelope, and will not */
unsigned char true_filter_resonance; /* be changed if they would be set to 127<<8 and 0. */
unsigned char vibrato_speed;
unsigned char vibrato_depth;
unsigned char vibrato_n; /* May be specified twice: volpan & effect. */
unsigned char vibrato_time;
unsigned char tremolo_speed;
unsigned char tremolo_depth;
unsigned char tremolo_time;
unsigned char sample_vibrato_time;
int sample_vibrato_depth; /* Starts at rate?0:depth, increases by rate */
int slide;
float delta;
IT_PLAYING_ENVELOPE volume_envelope;
IT_PLAYING_ENVELOPE pan_envelope;
IT_PLAYING_ENVELOPE pitch_envelope;
int fadeoutcount;
IT_FILTER_STATE filter_state[2]; /* Left and right */
DUMB_RESAMPLER resampler;
/* time_lost is used to emulate Impulse Tracker's sample looping
* characteristics. When time_lost is added to pos, the result represents
* the position in the theoretical version of the sample where all loops
* have been expanded. If this is stored, the resampling helpers will
* safely convert it for use with new loop boundaries. The situation is
* slightly more complicated if dir == -1 when the change takes place; we
* must reflect pos off the loop end point and set dir to 1 before
* proceeding.
*/
long time_lost;
};
#define IT_CHANNEL_MUTED 1
struct IT_CHANNEL
{
int flags;
unsigned char volume;
signed char volslide;
signed char xm_volslide;
signed char panslide;
/* xm_volslide is used for volume slides done in the volume column in an
* XM file, since it seems the volume column slide is applied first,
* followed by clamping, followed by the effects column slide. IT does
* not exhibit this behaviour, so xm_volslide is maintained at zero.
*/
unsigned char pan;
unsigned short truepan;
unsigned char channelvolume;
signed char channelvolslide;
unsigned char instrument;
unsigned char note;
unsigned char SFmacro;
unsigned char filter_cutoff;
unsigned char filter_resonance;
unsigned char key_off_count;
unsigned char note_cut_count;
unsigned char note_delay_count;
IT_ENTRY *note_delay_entry;
int arpeggio;
unsigned char retrig;
unsigned char xm_retrig;
int retrig_tick;
unsigned char tremor;
unsigned char tremor_time; /* Bit 6 set if note on; bit 7 set if tremor active. */
int portamento;
int toneporta;
unsigned char destnote;
/** WARNING - for neatness, should one or both of these be in the IT_PLAYING struct? */
unsigned short sample;
unsigned char truenote;
unsigned char midi_state;
signed char lastvolslide;
unsigned char lastDKL;
unsigned char lastEF; /* Doubles as last portamento up for XM files */
unsigned char lastG;
unsigned char lastHspeed;
unsigned char lastHdepth;
unsigned char lastRspeed;
unsigned char lastRdepth;
unsigned char lastI;
unsigned char lastJ; /* Doubles as last portamento down for XM files */
unsigned char lastN;
unsigned char lastO;
unsigned char high_offset;
unsigned char lastP;
unsigned char lastQ;
unsigned char lastS;
unsigned char pat_loop_row;
unsigned char pat_loop_count;
unsigned char pat_loop_end_row; /* Used to catch infinite pattern loops */
unsigned char lastW;
unsigned char xm_lastE1;
unsigned char xm_lastE2;
unsigned char xm_lastEA;
unsigned char xm_lastEB;
unsigned char xm_lastX1;
unsigned char xm_lastX2;
IT_PLAYING *playing;
};
struct DUMB_IT_SIGRENDERER
{
DUMB_IT_SIGDATA *sigdata;
int n_channels;
unsigned char globalvolume;
signed char globalvolslide;
unsigned char tempo;
signed char temposlide;
IT_CHANNEL channel[DUMB_IT_N_CHANNELS];
IT_PLAYING *playing[DUMB_IT_N_NNA_CHANNELS];
int tick;
int speed;
int rowcount;
int order; /* Set to -1 if the song is terminated by a callback. */
int row;
int processorder;
int processrow;
int breakrow;
int pat_loop_row;
int n_rows;
IT_ENTRY *entry_start;
IT_ENTRY *entry;
IT_ENTRY *entry_end;
long time_left; /* Time before the next tick is processed */
int sub_time_left;
DUMB_CLICK_REMOVER **click_remover;
IT_CALLBACKS *callbacks;
};
struct IT_CHECKPOINT
{
IT_CHECKPOINT *next;
long time;
DUMB_IT_SIGRENDERER *sigrenderer;
};
struct IT_CALLBACKS
{
int (*loop)(void *data);
void *loop_data;
/* Return 1 to prevent looping; the music will terminate abruptly. If you
* want to make the music stop but allow samples to fade (beware, as they
* might not fade at all!), use dumb_it_sr_set_speed() and set the speed
* to 0. Note that xm_speed_zero() will not be called if you set the
* speed manually, and also that this will work for IT and S3M files even
* though the music can't stop in this way by itself.
*/
int (*xm_speed_zero)(void *data);
void *xm_speed_zero_data;
/* Return 1 to terminate the mod, without letting samples fade. */
int (*midi)(void *data, int channel, unsigned char byte);
void *midi_data;
/* Return 1 to prevent DUMB from subsequently interpreting the MIDI bytes
* itself. In other words, return 1 if the Zxx macros in an IT file are
* controlling filters and shouldn't be.
*/
};
void _dumb_it_end_sigrenderer(sigrenderer_t *sigrenderer);
void _dumb_it_unload_sigdata(sigdata_t *vsigdata);
extern DUH_SIGTYPE_DESC _dumb_sigtype_it;
#define XM_APPREGIO 0
#define XM_PORTAMENTO_UP 1
#define XM_PORTAMENTO_DOWN 2
#define XM_TONE_PORTAMENTO 3
#define XM_VIBRATO 4
#define XM_VOLSLIDE_TONEPORTA 5
#define XM_VOLSLIDE_VIBRATO 6
#define XM_TREMOLO 7
#define XM_SET_PANNING 8
#define XM_SAMPLE_OFFSET 9
#define XM_VOLUME_SLIDE 10 /* A */
#define XM_POSITION_JUMP 11 /* B */
#define XM_SET_CHANNEL_VOLUME 12 /* C */
#define XM_PATTERN_BREAK 13 /* D */
#define XM_E 14 /* E */
#define XM_SET_TEMPO_BPM 15 /* F */
#define XM_SET_GLOBAL_VOLUME 16 /* G */
#define XM_GLOBAL_VOLUME_SLIDE 17 /* H */
#define XM_KEY_OFF 20 /* K (undocumented) */
#define XM_SET_ENVELOPE_POSITION 21 /* L */
#define XM_PANNING_SLIDE 25 /* P */
#define XM_MULTI_RETRIG 27 /* R */
#define XM_TREMOR 29 /* T */
#define XM_X 33 /* X */
#define XM_N_EFFECTS (10+26)
#define XM_E_SET_FILTER 0x0
#define XM_E_FINE_PORTA_UP 0x1
#define XM_E_FINE_PORTA_DOWN 0x2
#define XM_E_SET_GLISSANDO_CONTROL 0x3
#define XM_E_SET_VIBRATO_CONTROL 0x4
#define XM_E_SET_FINETUNE 0x5
#define XM_E_SET_LOOP 0x6
#define XM_E_SET_TREMOLO_CONTROL 0x7
#define XM_E_RETRIG_NOTE 0x9
#define XM_E_FINE_VOLSLIDE_UP 0xA
#define XM_E_FINE_VOLSLIDE_DOWN 0xB
#define XM_E_NOTE_CUT 0xC
#define XM_E_NOTE_DELAY 0xD
#define XM_E_PATTERN_DELAY 0xE
#define XM_X_EXTRAFINE_PORTA_UP 1
#define XM_X_EXTRAFINE_PORTA_DOWN 2
/* To make my life a bit simpler during conversion, effect E:xy is converted
* to effect number EBASE+x:y. The same applies to effect X, and IT's S. That
* way, these effects can be manipulated like regular effects.
*/
#define EBASE (XM_N_EFFECTS)
#define XBASE (EBASE+16)
#define SBASE (IT_N_EFFECTS)
#define EFFECT_VALUE(x, y) (((x)<<4)|(y))
#define HIGH(v) ((v)>>4)
#define LOW(v) ((v)&0x0F)
#define SET_HIGH(v, x) v = (((x)<<4)|((v)&0x0F))
#define SET_LOW(v, y) v = (((v)&0xF0)|(y))
#define BCD_TO_NORMAL(v) (HIGH(v)*10+LOW(v))
#if 0
unsigned char **_dumb_malloc2(int w, int h);
void _dumb_free2(unsigned char **line);
#endif
void _dumb_it_xm_convert_effect(int effect, int value, IT_ENTRY *entry);
int _dumb_it_fix_invalid_orders(DUMB_IT_SIGDATA *sigdata);
#endif /* INTERNAL_IT_H */

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/* _______ ____ __ ___ ___
* \ _ \ \ / \ / \ \ / / ' ' '
* | | \ \ | | || | \/ | . .
* | | | | | | || ||\ /| |
* | | | | | | || || \/ | | ' ' '
* | | | | | | || || | | . .
* | |_/ / \ \__// || | |
* /_______/ynamic \____/niversal /__\ /____\usic /| . . ibliotheque
* / \
* / . \
* licence.txt - Conditions for use of DUMB. / / \ \
* | < / \_
* If you do not agree to these terms, please | \/ /\ /
* do not use DUMB. \_ / > /
* | \ / /
* Information in [brackets] is provided to aid | ' /
* interpretation of the licence. \__/
*/
Dynamic Universal Music Bibliotheque, Version 0.9.3
Copyright (C) 2001-2005 Ben Davis, Robert J Ohannessian and Julien Cugniere
This software is provided 'as-is', without any express or implied warranty.
In no event shall the authors be held liable for any damages arising from the
use of this software.
Permission is granted to anyone to use this software for any purpose,
including commercial applications, and to alter it and redistribute it
freely, subject to the following restrictions:
1. The origin of this software must not be misrepresented; you must not claim
that you wrote the original software. If you use this software in a
product, you are requested to acknowledge its use in the product
documentation, along with details on where to get an unmodified version of
this software, but this is not a strict requirement.
[Note that the above point asks for a link to DUMB, not just a mention.
Googling for DUMB doesn't help much! The URL is "http://dumb.sf.net/".]
[The link was originally strictly required. This was changed for two
reasons. Firstly, if many projects request an acknowledgement, the list of
acknowledgements can become quite unmanageable. Secondly, DUMB was placing
a restriction on the code using it, preventing people from using the GNU
General Public Licence which disallows any such restrictions. See
http://www.gnu.org/philosophy/bsd.html for more information on this
subject. However, if DUMB plays a significant part in your project, we do
urge you to acknowledge its use.]
2. Altered source versions must be plainly marked as such, and must not be
misrepresented as being the original software.
3. This notice may not be removed from or altered in any source distribution.
4. If you are using the Program in someone else's bedroom on any Monday at
3:05 pm, you are not allowed to modify the Program for ten minutes. [This
clause provided by Inphernic; every licence should contain at least one
clause, the reasoning behind which is far from obvious.]
5. Users who wish to use DUMB for the specific purpose of playing music are
required to feed their dog on every full moon (if deemed appropriate).
[This clause provided by Allefant, who couldn't remember what Inphernic's
clause was.]
6. No clause in this licence shall prevent this software from being depended
upon by a product licensed under the GNU General Public Licence. If such a
clause is deemed to exist, Debian, then it shall be respected in spirit as
far as possible and all other clauses shall continue to apply in full
force.
We regret that we cannot provide any warranty, not even the implied warranty
of merchantability or fitness for a particular purpose.
Some files generated or copied by automake, autoconf and friends are
available in an extra download. These fall under separate licences but are
all free to distribute. Please check their licences as necessary.

541
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/* _______ ____ __ ___ ___
* \ _ \ \ / \ / \ \ / / ' ' '
* | | \ \ | | || | \/ | . .
* | | | | | | || ||\ /| |
* | | | | | | || || \/ | | ' ' '
* | | | | | | || || | | . .
* | |_/ / \ \__// || | |
* /_______/ynamic \____/niversal /__\ /____\usic /| . . ibliotheque
* / \
* / . \
* readme.txt - General information on DUMB. / / \ \
* | < / \_
* | \/ /\ /
* \_ / > /
* | \ / /
* | ' /
* \__/
*/
********************
*** Introduction ***
********************
Thank you for downloading DUMB v0.9.3! You should have the following
documentation:
readme.txt - This file
licence.txt - Conditions for the use of this software
release.txt - Release notes and changes for this and past releases
docs/
howto.txt - Step-by-step instructions on adding DUMB to your project
faq.txt - Frequently asked questions and answers to them
dumb.txt - DUMB library reference
deprec.txt - Information about deprecated parts of the API
ptr.txt - Quick introduction to pointers for those who need it
fnptr.txt - Explanation of function pointers for those who need it
modplug.txt - Our official position regarding ModPlug Tracker
This file will help you get DUMB set up. If you have not yet done so, please
read licence.txt and release.txt before proceeding. After you've got DUMB set
up, please refer to the files in the docs/ directory at your convenience. I
recommend you start with howto.txt.
****************
*** Features ***
****************
Here is the statutory feature list:
- Freeware
- Supports playback of IT, XM, S3M and MOD files
- Faithful to the original trackers, especially IT; if it plays your module
wrongly, please tell me so I can fix the bug! (But please don't complain
about differences between DUMB and ModPlug Tracker; see docs/modplug.txt)
- Accurate support for low-pass resonant filters for IT files
- Very accurate timing and pitching; completely deterministic playback
- Click removal
- Facility to embed music files in other files (e.g. Allegro datafiles)
- Three resampling quality settings: aliasing, linear interpolation and cubic
interpolation
- Number of samples playing at once can be limited to reduce processor usage,
but samples will come back in when other louder ones stop
- All notes will be present and correct even if you start a piece of music in
the middle
- Option to take longer loading but seek fast to any point before the music
first loops (seeking time increases beyond this point)
- Audio generated can be used in any way; DUMB does not necessarily send it
straight to a sound output system
- Can be used with Allegro, can be used without (if you'd like to help make
DUMB more approachable to people who aren't using Allegro, please contact
me)
- Makefile provided for DJGPP, MinGW, Linux, BeOS and Mac OS X
- Project files provided for MSVC 6
- Autotools-based configure script available as a separate download for
masochists
- Code should port anywhere that has a 32-bit C compiler; instructions on
compiling it manually are available further down
*********************
*** What you need ***
*********************
To use DUMB, you need a 32-bit C compiler (GCC and MSVC are fine). If you
have Allegro, DUMB can integrate with its audio streams and datafiles, making
your life easier. If you do not wish to use Allegro, you will have to do some
work to get music playing back. The 'dumbplay' example program requires
Allegro.
Allegro - http://alleg.sf.net/
**********************************************
*** How to set DUMB up with DJGPP or MinGW ***
**********************************************
You should have got the .zip version. If for some reason you got the .tar.gz
version instead, you may have to convert make/config.bat to DOS text file
format. WinZip does this automatically by default. Otherwise, loading it into
MS EDIT and saving it again should do the trick (but do not do this to the
Makefiles as it destroys tabs). You will have to do the same for any files
you want to view in Windows Notepad. If you have problems, just go and
download the .zip instead.
Make sure you preserved the directory structure when you extracted DUMB from
the archive. Most unzipping programs will do this by default, but pkunzip
requires you to pass -d. If not, please delete DUMB and extract it again
properly.
If you are using Windows, open an MS-DOS Prompt or a Windows Command Line.
Change to the directory into which you unzipped DUMB.
If you are using MinGW (and you haven't renamed 'mingw32-make'), type:
mingw32-make
Otherwise, type the following:
make
DUMB will ask you whether you wish to compile for DJGPP or MinGW. Then it
will ask you whether you want support for Allegro. (You have to have made and
installed Allegro's optimised library for this to work.) Finally, it will
compile optimised and debugging builds of DUMB, along with the example
programs. When it has finished, run one of the following to install the
libraries:
make install
mingw32-make install
All done! If you ever need the configuration again (e.g. if you compiled for
DJGPP before and you want to compile for MinGW now), run one of the
following:
make config
mingw32-make config
See the comments in the Makefile for other targets.
Note: the Makefile will only work properly if you have COMSPEC or ComSpec set
to point to command.com or cmd.exe. If you set it to point to a Unix-style
shell, the Makefile won't work.
Please let me know if you have any trouble.
As an alternative, MSYS users may attempt to use the configure script,
available in dumb-0.9.3-autotools.tar.gz. This has been found to work without
Allegro, and is untested with Allegro. I should appreciate feedback from
anyone else who tries this. I do not recommend its use, partly because it
creates dynamically linked libraries and I don't know how to stop it from
doing that (see the section on compiling DUMB manually), and partly because
autotools are plain evil.
Scroll down for information on the example programs. Refer to docs/howto.txt
when you are ready to start programming with DUMB. If you use DUMB in a game,
let me know - I might decide to place a link to your game on DUMB's website!
******************************************************
*** How to set DUMB up with Microsoft Visual C++ 6 ***
******************************************************
If you have a newer version of Microsoft Visual C++ or Visual Something that
supports C++, please try these instructions and let me know if it works.
You should have got the .zip version. If for some reason you got the .tar.gz
version instead, you may have to convert some files to DOS text file format.
WinZip does this automatically by default. Otherwise, loading such files into
MS EDIT and saving them again should do the trick. You will have to do this
for any files you want to view in Windows Notepad. If you have problems, just
go and download the .zip instead.
Make sure you preserved the directory structure when you extracted DUMB from
the archive. Most unzipping programs will do this by default, but pkunzip
requires you to pass -d. If not, please delete DUMB and extract it again
properly.
DUMB comes with a workspace Microsoft Visual C++ 6, containing projects for
the DUMB core, the Allegro interface library and each of the examples. The
first thing you might want to do is load the workspace up and have a look
around. You will find it in the dumb\vc6 directory under the name dumb.dsw.
Note that the aldumb and dumbplay projects require Allegro, so they won't
work if you don't have Allegro. Nevertheless, dumbplay is the best-commented
of the examples, so do have a look.
When you are ready to add DUMB to your project, follow these instructions:
1. Open your project in VC++.
2. Select Project|Insert Project into Workspace...
3. Navigate to the dumb\vc6\dumb directory and select dumb.dsp.
Alternatively, if you know that you are statically linking with a library
that uses the statically linked multithreaded runtime (/MT), you may wish
to select dumb_static.dsp in the dumb_static subdirectory instead.
4. Select Build|Set Active Configuration..., and reselect one of your
project's configurations.
5. Select Project|Dependencies... and ensure your project is dependent on
DUMB.
6. Select Project|Settings..., Settings for: All Configurations, C/C++ tab,
Preprocessor category. Add the DUMB include directory to the Additional
Include Directories box.
7. Ensure that for all the projects in the workspace (or more likely just all
the projects in a particular dependency chain) the run-time libraries are
the same. That's in Project|Settings, C/C++ tab, Code generation category,
Use run-time library dropdown. The settings for Release and Debug are
separate, so you'll have to change them one at a time. Exactly which run-
time library you use will depend on what you need; it doesn't appear that
DUMB has any particular requirements, so set it to whatever you're using
now. (It will have to be /MD, the multithreaded DLL library, if you are
statically linking with Allegro. If you are dynamically linking with
Allegro than it doesn't matter.)
8. If you are using Allegro, do some or all of the above for the aldumb.dsp
project in the aldumb directory too.
Good thing you only have to do all that once ... or twice ...
If you have the Intel compiler installed, it will - well, should - be used to
compile DUMB. The only setting I [Tom Seddon] added is /QxiM. This allows the
compiler to use PPro and MMX instructions, and so when compiling with Intel
the resultant EXE will require a Pentium II or greater. I don't think this is
unreasonable. After all, it is 2003 :)
[Note from Ben: the Intel compiler is evil! It makes AMD processors look bad!
Patch it or boycott it or something!]
If you don't have the Intel compiler, VC will compile DUMB as normal.
This project file and these instructions were provided by Tom Seddon (I hope
I got his name right; I had to guess it from his e-mail address!). Chad
Austin has since changed the project files around, and I've just attempted to
hack them to incorporate new source files. I've also tried to update the
instructions using guesswork and some knowledge of Visual J++ (you heard me).
The instructions and the project files are to this day untested by me. If you
have problems, check the download page at http://dumb.sf.net/ to see if they
are addressed; failing that, direct queries to me and I'll try to figure them
out.
If you have any comments at all on how the VC6 projects are laid out, or how
the instructions could be improved, I should be really grateful to hear them.
I am a perfectionist, after all. :)
Scroll down for information on the example programs. When you are ready to
start using DUMB, refer to docs/howto.txt. If you use DUMB in a game, let me
know - I might decide to place a link to your game on DUMB's website!
******************************************************
*** How to set DUMB up on Linux, BeOS and Mac OS X ***
******************************************************
You should have got the .tar.gz version. If for some reason you got the .zip
version instead, you may have to strip all characters with ASCII code 13 from
some of the text files. If you have problems, just go and download the
.tar.gz instead.
You have two options. There is a Makefile which should cope with most
systems. The first option is to use this default Makefile, and the procedure
is explained below. The second option is to download
dumb-0.9.3-autotools.tar.gz, extract it over the installation, run
./configure and use the generated Makefile. Users who choose to do this are
left to their own devices but advised to read the information at the end of
this section. I strongly recommend the first option.
If you are not using the configure script, the procedure is as follows.
First, run the following command as a normal user:
make
You will be asked whether you want Allegro support. Then, unless you are on
BeOS, you will be asked where you'd like DUMB to install its headers,
libraries and examples (which will go in the include/, lib/ and bin/
subdirectories of the prefix you specify). BeOS has fixed locations for these
files. You may use shell variables here, e.g. $HOME or ${HOME}, but ~ will
not work. Once you have specified these pieces of information, the optimised
and debugging builds of DUMB will be compiled, along with the examples. When
it has finished, you can install them with:
make install
You may need to be root for this to work. It depends on the prefix you chose.
Note: the Makefile will only work if COMSPEC and ComSpec are both undefined.
If either of these is defined, the Makefile will try to build for a Windows
system, and will fail.
Please let me know if you have any trouble.
Scroll down for information on the example programs. Refer to docs/howto.txt
when you are ready to start programming with DUMB. If you use DUMB in a game,
let me know - I might decide to place a link to your game on DUMB's website!
Important information for users of the configure script follows.
The Makefile generated by the configure script creates dynamically linked
libraries, and I don't know how to stop it from doing so. See the section
below on building DUMB manually for why I recommend linking DUMB statically.
However, if you choose to use the configure script, note the following.
The default Makefile is a copy of Makefile.rdy (short for 'ready'), and it
must exist with the name Makefile.rdy in order to work. The configure script
will overwrite Makefile, so if you want the default Makefile back, just run:
cp Makefile.rdy Makefile
Do not use a symlink, as that would result in Makefile.rdy getting
overwritten next time the configure script is run!
You can also access the usual build system by passing '-f Makefile.rdy' to
Make.
********************************************************
*** How to build DUMB manually if nothing else works ***
********************************************************
Those porting to platforms without floating point support should be aware
that DUMB does use floating point operations but not in the inner loops. They
are used for volume and note pitch calculations, and they are used when
initialising the filter algorithm for given cut-off and resonance values.
Please let me know if this is a problem for you. If there is enough demand, I
may be able to eliminate one or both of these cases.
All of the library source code may be found in the src/ subdirectory. There
are headers in the include/ subdirectory, and src/helpers/resample.c also
#includes some .inc files in its own directory.
There are four subdirectories under src/. For projects not using Allegro, you
will need all the files in src/core/, src/helpers/ and src/it/. If you are
using Allegro, you will want the src/allegro/ subdirectory too. For
consistency with the other build systems, the contents of src/allegro/ should
be compiled into a separate library.
I recommend static-linking DUMB, since the version information is done via
macros and the API has a tendency to change. If you static-link, then once
your program is in binary form, you can be sure that changes to the installed
version of DUMB won't cause it to malfuction. It is my fault that the API has
been so unstable. Sorry!
Compile each .c file separately. As mentioned above, you will need to specify
two places to look for #include files: the include/ directory and the source
file's own directory. You will also need to define the symbol
DUMB_DECLARE_DEPRECATED on the command line.
Do not compile the .inc files separately.
You may need to edit dumb.h and add your own definition for LONG_LONG. It
should be a 64-bit integer. If you do this, please see if you can add a check
for your compiler so that it still works with other compilers.
DUMB has two build modes. If you define the symbol DEBUGMODE, some checks for
programmer error will be incorporated into the library. Otherwise it will be
built without any such checks. (DUMB will however always thoroughly check the
validity of files it is loading. If you ever find a module file that crashes
DUMB, please let me know!)
I recommend building two versions of the library, one with DEBUGMODE defined
and debugging information included, and the other with compiler optimisation
enabled. If you can install DUMB system-wide so that your projects, and other
people's, can simply #include <dumb.h> or <aldumb.h> and link with libraries
by simple name with no path, then that is ideal.
If you successfully port DUMB to a new platform, please let me know!
****************************
*** The example programs ***
****************************
Three example programs are provided. On DOS and Windows, you can find them in
the examples subdirectory. On other systems they will be installed system-
wide.
dumbplay
This program will only be built if you have Allegro. Pass it the filename
of an IT, XM, S3M or MOD file, and it will play it. It's not a polished
player with real-time threading or anything - so don't complain about it
stuttering while you use other programs - but it does show DUMB's fidelity
nicely. You can control the playback quality by editing dumb.ini, which
must be in the current working directory. (This is a flaw for systems
where the program is installed system-wide, but it is non-fatal.) Have a
look at the examples/dumb.ini file for further information.
dumbout
This program does not need Allegro. You can use it to stream an IT, XM,
S3M or MOD file to raw PCM. This can be used as input to an encoder like
oggenc (with appropriate command-line options), or it can be sent to a
.pcm file which can be read by any respectable waveform editor. This
program is also convenient for timing DUMB. Compare the time it takes to
render a module with the module's playing time! dumbout doesn't try to
read any configuration file; the options are set on the command line.
dumb2wav
This program is much the same as dumbout, but it writes a .wav file with
the appropriate header. Thanks go to Chad Austin for this useful tool.
*********************************************
*** Downloading music or writing your own ***
*********************************************
If you would like to compose your own music modules, then this section should
help get you started.
The best programs for the job are the trackers that pioneered the file
formats:
Impulse Tracker - IT files - http://www.lim.com.au/ImpulseTracker/
Fast Tracker II - XM files - http://www.fasttracker2.com/
Scream Tracker 3 - S3M files - No official site known, please use Google
MOD files come from the Amiga; I do not know what PC tracker to recommend for
editing these. If you know of one, let me know! In the meantime, I would
recommend using a more advanced file format. However, don't convert your
existing MODs just for the sake of it.
Fast Tracker II is Shareware. It offers a very flashy interface and has a
game embedded, but the IT file format is more powerful and better defined. By
all means try them both and see which you prefer; it is largely a matter of
taste (and, in some cases, religion). Impulse Tracker and Scream Tracker 3
are Freeware, although you can donate to Impulse Tracker and receive a
slightly upgraded version. DUMB is likely to be at its best with IT files.
These editors are DOS programs. Users of DOS-incapable operating systems may
like to try ModPlug Tracker, but should read docs/modplug.txt before using it
for any serious work. If you use a different operating system, or if you know
of any module editors for Windows that are more faithful to the original
trackers' playback, please give me some links so I can put them here!
ModPlug Tracker - http://www.modplug.com/
If you have an x86 Linux system with VGA-compatible hardware (which covers
all PC graphics cards I've ever seen), you should be able to get Impulse
Tracker running with DOSEMU. You will have to give it access to the VGA ports
and run it in a true console, as it will not work with the X-based VGA
emulation. I personally added the SB16 emulation to DOSEMU, so you can even
use filters! However, it corrupts samples alarmingly often when saving on my
system - probably a DOSEMU issue. If you set this up, I am curious to know
whether it works for you.
DOSEMU - http://www.dosemu.org/
BEWARE OF WINAMP! Although it's excellent for MP3s, it is notorious for being
one of the worst module players in existence; very many modules play wrongly
with it. There are plug-ins available to improve Winamp's module support, for
example WSP.
Winamp - http://www.winamp.com/
WSP - http://www.spytech.cz/index.php?sec=demo
(There is a Winamp plug-in that uses DUMB, but it is unreliable. If anyone
would like to work on it, please get in touch.)
While I am at it I should also point out that Winamp is notorious for
containing security flaws. Install it at your own risk, and if it is your
work computer, check with your boss first!
Samples and instruments are the building blocks of music modules. You can
download samples at
http://www.tump.net/
If you would like to download module files composed by other people, check
the following sites:
http://www.modarchive.com/
http://www.scene.org/
http://www.tump.net/
http://www.homemusic.cc/main.php
http://www.modplug.com/
Once again, if you know of more sites where samples or module files are
available for download, please let me know.
If you wish to use someone's music in your game, please respect the
composer's wishes. In general, you should ask the composer. Music that has
been placed in the Public Domain can be used by anyone for anything, but it
wouldn't do any harm to ask anyway if you know who the author is. In many
cases the author will be thrilled, so don't hesitate!
A note about converting modules from one format to another, or converting
from MIDI: don't do it, unless you are a musician and are prepared to go
through the file and make sure everything sounds the way it should! The
module formats are all slightly different, and MIDI is very different;
converting from one format to another will usually do some damage.
Instead, it is recommended that you allow DUMB to interpret the original file
as it sees fit. DUMB may make mistakes (it does a lot of conversion on
loading), but future versions of DUMB will be able to rectify these mistakes.
On the other hand, if you convert the file, the damage is permanent.
***********************
*** Contact details ***
***********************
If you have trouble with DUMB, or want to contact me for any other reason, my
e-mail address is given below. Please do get in touch, even if I appear to
have disappeared!
If you wish to chat online about something, perhaps on IRC, that can most
likely be arranged. Send me an e-mail.
******************
*** Conclusion ***
******************
This is the conclusion.
Ben Davis
entheh@users.sf.net

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* | | | | | | || || | | . .
* | |_/ / \ \__// || | |
* /_______/ynamic \____/niversal /__\ /____\usic /| . . ibliotheque
* / \
* / . \
* release.txt - Release notes for DUMB. / / \ \
* | < / \_
* | \/ /\ /
* \_ / > /
* | \ / /
* | ' /
* \__/
*/
*******************************************
*** DUMB v0.9.3, released 7 August 2005 ***
*******************************************
Hello! Welcome to a long-awaited-or-probably-just-given-up-on-by-everybody
release! New to this release are lower memory usage, faster mixing loops,
loading of text fields in the module files, and faster load functions for
projects that don't need to seek within the module or know its length.
Additionally, Chad Austin has contributed a dumb2wav tool for converting
modules to .wav files and updated the Visual Studio 6 project files to
compile all the examples as well as the library. Users of Unix-like systems
will be pleased to know that on Chad's suggestion I have made the build
system cope with variables such as $HOME or ${HOME} in the prefix.
Chad has also contributed an Autotools build system, but neither of us
recommends its use. The Autotools are an evil black box, we haven't quite
managed to get it right, and goodness help you if it happens not to work for
you. The files are available in a separate download if you absolutely need
them. Notice that that download is almost twice as large as the rest of DUMB!
Maybe we'll do SCons next time.
Thanks to Chad for all his work. Chad is the author of Audiere, a portable
sound library which has started using DUMB for its module playback! Wahoo!
http://audiere.sf.net/
There are three main optimisations that went into the mixing loops.
First, I downloaded ModPlugXMMS and had a peek at the mixing code, which is
Public Domain. It uses look-up tables for the cubic mixing. I pinched the
idea, and that sped DUMB's cubic (best quality) resamplers up by a factor of
two or three.
Secondly, the samples loaded from the file are now kept in 8-bit or 16-bit
format, whereas previously they were being converted to 24-bit-in-32-bit on
loading. This means the samples occupy a half or a quarter of the memory they
used to occupy. It also had the side-effect of speeding up the mixing loops,
but it meant I had to duplicate the resampling code. (It is all done with
macros in the source code, but it becomes two copies on the binary level.)
Secondly, stereo samples and stereo mixing buffers are now kept in
interleaved format, where previously the two channels were done separately to
keep the code simpler. This change has made the library quite a bit bigger,
but has made the code run almost twice as fast for stereo output (tested for
modules whose samples are mostly mono)!
DUMB is now as fast as ModPlugXMMS on my system.
Some people have also commented that DUMB seems to take a long time loading
files. This is because immediately upon loading the file it runs the playback
engine over it up as far as the point of first loop, taking snapshots at 30-
second intervals to be used as references for fast seeking and finally
storing the playback time. Of course, most games don't need this. You can now
skip it by calling the _quick versions of the dumb_load_*(), dumb_read_*() or
dumb_register_dat_*() functions. Should you need the data later, you can call
dumb_it_do_initial_runthrough() to calculate it. Please note that this cannot
currently be done safely from a concurrent thread while the music is playing.
As mentioned, DUMB loads the text fields in module files now. You can
retrieve the song title with duh_get_tag(). Sample names and file names and
instrument names and filenames, and the song message for IT files, are
available with a call to duh_get_it_sigdata() and various dumb_it_sd_*()
functions. Please note that text fields added as extensions by ModPlug
Tracker are not supported.
DUMB's timing is ever so slightly more accurate. This is hardly noticeable,
but it has meant that the length computed will increase very slightly.
There are many small playback fixes in this release:
* The Lxx effect in XM files (set envelope position) is now supported.
* Pattern looping is now correct for XM files. Bizarrely, an ordinary pattern
loop whose start point isn't the first row seems to cause the next pattern
to start at the row corresponding to the loop start point. That must have
been a headache for people creating XM files! Nevertheless, DUMB now
emulates this behaviour. If you have an XM file that was written in a
tracker other than Fast Tracker II and breaks in DUMB, you can get around
it by putting a D00 effect (break to row 0) right at the end of the pattern
containing the loop.
* XM pattern looping can be infinite. DUMB should detect this and call the
loop callback when it happens. Specifically, it has a loop counter for each
channel, so each time it sets or decrements that counter, it remembers the
loop end point for that channel. When the loop terminates, the loop end
point is reset to 0. If the loop end point ever decreases during a loop,
the loop callback is called. If anyone manages to get around this check and
prevent DUMB from calling the callback, please let me know and send me an
illustrative XM file!
* For IT files, notes are now removed from channels if they have faded out,
even if they are still in the foreground. After this has happened, a row
with a note and Gxx (tone portamento) specified will cause a new note to
start playing, which is what Impulse Tracker does in this scenario.
(Normally, Gxx prevents the new note from playing and instead causes the
old note to start sliding towards the new note.)
* If a tone portamento command occurred when no note was playing, the effect
value wasn't stored. This has been fixed. Thanks to Maim from #trax on
EFnet for discovering this bug.
* DUMB now treats the parameter to the undocumented XM key off effect Kxx as
a delay, consistent with Fast Tracker II's behaviour. It has also been made
not to clear the note, so a subsequent volume command will restore it, as
in Fast Tracker II.
* DUMB used to process the first row when you created the
DUMB_IT_SIGRENDERER. This happened before you had a chance to install any
callbacks. If an F00 effect occurred on the first row, the music would stop
immediately and the xm_speed_zero callback would be called if it were
present. Unfortunately, it wasn't present, and the algorithm for
calculating the length subsequently went into an endless loop while waiting
for it. Worse still, the same algorithm accumulated data for fast seeking,
and never stopped, so it pretty quickly consumed all the resources. DUMB
will now not process the first row until you first request some samples,
provided you pass zero for pos. Of course, any MOD or XM file with F00 in
the very first row won't do much anyway, but such files won't crash the
library now.
* There was a subtle bug that affected a few XM files. For instruments with
no associated samples, the array mapping notes to samples is uninitialised.
This became a problem if such instruments were then used, which does happen
sometimes. On many systems, memory is initialised to zero when first given
to a program (for security reasons), so the problem didn't come up most of
the time. However, on platforms like DOS where memory isn't initialised, or
in programs that reuse memory later on (this includes the XMMS plug-in with
which I discovered the bug), a rogue note would occasionally play. This has
now been fixed.
* DUMB's envelope handling for IT files was subtly wrong. Upon note off, it
stopped obeying the sustain loop points one tick too early. Notes were
often shorter than they should have been, and in pathological cases a whole
extra iteration of the sustain loop section might have been skipped. The
envelope code has now been rewritten. Thanks go to Allefant for Valgrinding
the new code!
Finally, there were two build problems in the last version, which were fixed
in the download marked with -fixed. They are of course correct in this
version. For the record:
* The make/config.bat file, responsible for generating make/config.txt, wrote
a crucial line to the wrong place, causing it to be left out of the file.
As a result, the makefile would fail to install everything for Allegro
users, and enter infinite recursion for other users. This applied to people
using DJGPP and MinGW.
* DUMB's Makefile was supposed to install the example programs on Unix-based
platforms, but it wasn't doing. The fix was to edit Makefile and change the
one occurrence of $COMSPEC to $(COMSPEC).
That's it! I hope you enjoy this long-awaited-or-probably-just-given-up-on-
by-everybody release of DUMB!
******************************************
*** DUMB v0.9.2, released 2 April 2003 ***
******************************************
Yes, there really has been a release. This is not a day-late April fools'
joke.
DUMB's full name has changed! The old "Dedicated Universal Music
Bastardisation" was rather silly, and not much more than a forced attempt at
finding words beginning with D, U, M and B. I spent weeks and weeks browsing
dictionaries and hopelessly asking others for bright ideas, until the
brilliant Chris "Kitty Cat" Robinson came up with "Dynamic". I decided to
keep the U as Universal, since a DUH struct can hold digital music in any
format. Now all that remained was the B, but it didn't take me long to come
up with Bibliotheque, which, despite looking French, is indeed considered an
English word by Oxford English Dictionary Online, to which my university has
a subscription. So there you have it - the name now makes sense.
The two most significant additions to the project would have to be the new
thread safety (with an important restriction, detailed in docs/dumb.txt), and
the new build system. The silly 'makeall' and 'makecore' scripts are gone. If
you are a GCC user, all you need do now is run 'make' and 'make install', as
for other projects. You don't even have to run a 'fix' script any more! There
are some caveats, which are covered in readme.txt. If you use Microsoft
Visual C++ 6, you no longer need to obtain GCC and GNU Make - there is a
project file just for you.
Huge thanks go to Steve Terry for testing on Windows XP - about five times -
and to lillo for testing on BeOS and Mac OS X. Thanks also to X-G for testing
on a Windows system that has consistently posed problems for DUMB's old
makefiles.
There was a bug whereby al_poll_duh() would sometimes cause the music to
resume playing if you called it after al_pause_duh(). Whether this was DUMB's
fault for misusing Allegro's API, or a bug in Allegro, is unclear, but this
release makes it work.
In one of my projects, I found that my AL_DUH_PLAYER stopped playing when
there were lots of other sound effects. In order to fix this, I programmed
DUMB to set the priority of the stream's voice to 255, the maximum. I also
added al_duh_set_priority(), so you can set the priority yourself if you need
to.
The resampling code has undergone a transformation. The bad news is that the
linear average code is no longer in use. The good news is that where DUMB's
resamplers used to require three extra samples' worth of memory to be
allocated and initialised, it now copes with just the sample data. And it
does a very good job at bouncing off loop points and otherwise hurtling
around the sample. The resampling code is considerably more complicated, but
the code that uses the resamplers is considerably simpler - and if you
noticed a slight click in some bidirectionally looping samples, you'll be
pleased to know that that click is gone!
I have also devoted some effort to optimisation. It seemed hopeless for a
while, but then I actually figured out a way of making it faster AND more
accurate at the same time! DUMB is now quite a bit faster than it was, and it
mixes not with 16-bit precision, but with 24-bit precision. (It used 32-bit
integers all along, but the difference is that it now makes use of 256 times
as much of the integer's range.)
There have been the usual improvements to playback. The last release occurred
rather too soon after I had fixed the XM effect memories; EAx and EBx, fine
volume ramps, had been neglected. These are now handled properly.
In previous versions of DUMB, muted channels in IT were actually played with
surround sound panning (where the right-hand channel is inverted). This has
been fixed, so muted channels will really be muted now.
There were also some subtle problems with the way DUMB handled New Note
Actions for IT files. It turned out that, in all releases of DUMB so far,
pitch, filter and panning envelopes and sample vibrato were not being
processed for any note that was forced into the background by a new note on
the same channel! This only affected IT files. Not only has this been fixed,
but envelope interpolation is much more accurate. Long trailing envelope-
driven fade-outs sound a lot better now!
Since panning and filter envelopes are more precise, extra fields have been
added to the DUMB_IT_CHANNEL_STATE struct, used by
dumb_it_sr_get_channel_state(). These fields hold the 'decimal' parts of the
pan and filter cut-off. See dumb.txt for details.
Mxx (set channel volume) now correctly only modifies the last note played on
the channel, not any previous notes that have been forced into the background
by New Note Actions, and filter effect processing is now closer to what
Impulse Tracker does.
The XM loader was slightly flawed and could crash on files containing samples
with out-of-range loop points. One such file was given to me. This has been
fixed.
Finally, the legal stuff. Julien Cugniere has been added to the list of
copyright owners. He deserves it, for all the work he did on the XM support!
And the licence has been changed. You are no longer required to include a
link to DUMB in a project that uses DUMB; the reasons for this relaxation are
explained in licence.txt. However, the request is still there ...
As usual, enjoy!
**********************************************
*** DUMB v0.9.1, released 19 December 2002 ***
**********************************************
Hi again! Lots to say this time, so I shall cut right to the chase.
DUMB now supports Impulse Tracker's low-pass resonant filters! Huge thanks go
to Jeffrey Lim, author of Impulse Tracker, for giving me what information he
still had regarding the algorithm; to cut a long story short, modifying
ModPlug Tracker's source code (which is in the Public Domain) led to an
algorithm whose output matched Impulse Tracker's perfectly.
Please note that ModPlug Tracker's filters as they stand do not match Impulse
Tracker's, and I have no interest in supporting ModPlug Tracker's variant
(especially not the integer rounding problems). Please see docs/modplug.txt,
new in this release, for details.
Thanks also go to Fatso Huuskonen for motivating me to add filter support,
and providing me with several great IT files to test it with!
The other important feature added for this release is click removal. Up until
now, DUMB has generated clicks when cutting notes, starting samples in the
middle, and so on. This version of DUMB will remove any such clicks. Note
that DUMB does not use volume ramps to accomplish this; the algorithm will
not take the bite out of the music!
In other news, DUMB now supports sample vibrato for IT files, and instrument
vibrato for XM files. A slight bug in New Note Action handling for IT files
has been fixed; Note Fade will not break the sustain loops of the sample and
envelope, as it did before. Tremor handling (Ixy) had a strange bug in it,
which has been fixed.
Support for XM files has been greatly enhanced. The XM envelope handling new
in the last release contained a huge bug, resulting in notes seeming not to
stop when they should; this has been fixed. Some XM files crashed DUMB, while
others failed to load; these problems have been solved. Effect memories now
work properly for XM and MOD files, to the best of my knowledge. Some other
differences between IT and XM have been accounted for, most notably the
Retrigger Note effects, Rxy and E9x.
DUMB's sound quality and accuracy are not the only areas that have been
enhanced. The API has been expanded, at last. You can now detect when a
module loops, or make it play through just once. You can ask DUMB to inform
you every time it generates some samples; this is useful for visualisation.
For IT files, you can intercept the MIDI messages generated by Zxx macros,
enabling you to synchronise your game with the music to some extent. (There
is no such method for XM, S3M or MOD files yet; sorry. Also note that the
function will be called before you actually hear the sound; I cannot improve
this until DUMB has its own sound drivers, which won't be for a while.) You
can query the current order and row. Finally, operations like changing the
speed and tempo are now possible, and you can query the playback state on
each channel.
Some parts of DUMB's API have been deprecated. Simple programs that use
Allegro will be unaffected, but if you get some compiler warnings or errors,
please review docs/deprec.txt. This file explains why those parts of the API
were deprecated, and tells you how to adapt your code; the changes you need
to make are straightforward. Sorry for the inconvenience.
For various reasons, I have made DUMB's makefiles use different compiler
flags depending on your GCC version (unless you are using MSVC). There is no
elegant way of getting the makefiles to detect when GCC is upgraded. If you
upgrade GCC, you should execute 'make clean' in order to make DUMB detect the
GCC version again. Otherwise you may get some annoying error messages. (It is
wise to do this in any case, so that all the object files are built with the
same GCC version.)
DUMB's example players have been unified into a single player called
'dumbplay'. The player has been enhanced to display messages when the music
loops, and when XM and MOD files freeze (effect F00; more information on this
in docs/howto.txt).
Finally, as noted on DUMB's website, the release notes from the last release
were inaccurate. It has been verified that DUMBOGG v0.5 does still work with
that release, and still works with this release. The esoteric DUMBOGG v0.6
has not been created yet, since DUMBOGG v0.5 still works.
Please scroll down and read through the indented paragraphs in the notes for
the last release; they are relevant for this release too.
That's all folks! Until next time.
*******************************************
*** DUMB v0.9, released 16 October 2002 ***
*******************************************
MOD support is here! DUMB now supports all four of the common module formats.
As usual, there have also been some improvements to the way modules are
played back. Most notably, handling of tone portamento in IT files has been
improved a lot, and XM envelopes are now processed correctly.
The other major change is that DUMB now does a dummy run through each module
on loading. It stores the playback state at thirty-second intervals. It stops
when the module first loops, and then stores the playback time. This results
in a slightly longer load time and a greater memory overhead, but seeking is
faster (to any point before the module first loops) and the length is
calculated! duh_get_length() will return this and is now documented in
docs/howto.txt and docs/dumb.txt.
DUMB's build process has been changed to use 'mingw' wherever it used
'mingw32' before; some directories have been renamed, and the 'fix' command
you had to run for MinGW has been changed from 'fix mingw32' to 'fix mingw'.
Last time, I directed you to scroll down and read the notes from a past
release, but ignore this point, and that point applies to something else, and
so on. Did anyone do so? Well, if you're reading this at all, you probably
did. Nevertheless, this time I shall be much less confusing and restate any
relevant information. So the least you can do is read it!
- If your program ever aborts with exit code 37 while loading an IT file,
PLEASE LET ME KNOW! The IT file in question has a stereo compressed sample
in it, and the format is unspecified for this case (Impulse Tracker itself
doesn't use stereo samples at all). I will need the IT file in question,
and any information you can give me about how the IT file was created (e.g.
what program). (If you don't get to see an exit code, let me know anyway.)
- If your program ever outputs a line resembling "Inst 01 Env: 0,64 8,32
15,48" to stderr while loading an IT file, PLEASE LET ME KNOW! You have an
old IT file (saved by an Impulse Tracker version older than 2.00), and
support for such files is STILL untested.
- Not all parts of DUMB's API are documented yet. You will find some
functions in dumb.h which are not listed in docs/dumb.txt; the reason is
that these functions still need work and will probably change. If you
really, really want to use them, talk to me first (IRC EFnet #dumb is a
good place for this; see readme.txt for details on using IRC). I intend to
finalise and document the whole of DUMB's API for Version 1.0.
There have been some changes to the naming conventions in DUMB's undocumented
API. DUMBOGG v0.5 will not work with this and subsequent releases of DUMB;
please upgrade to DUMBOGG v0.6. These changes should not break anything in
your own code, since you didn't use those parts of the API, did you ;)
There is still a great deal of work to be done before DUMB's API can be
finalised, and thus it will be a while before DUMB v1.0 comes out. It should
be worth the wait. In the meantime, there will be 0.9.x releases with
additional functionality, improved playback, and possibly support for some
extra file formats.
Finally I should like to offer an apology; there is a strong possibility that
some of DUMB's official API will change in the near future. There will not be
any drastic changes, and the corresponding changes to your source code will
be simple enough. If I didn't make these changes, DUMB's API would start to
become limited, or messy, or both, so it's for the better. I apologise in
advance for this.
Now scroll down and read the notes for the first r... oh wait, we already did
that. I guess that's it then. You can stop reading now.
Right after you've read this.
And this.
Off you go.
Bye.
********************************************
*** DUMB v0.8.1, released 11 August 2002 ***
********************************************
This is a minor release that fixes a few bugs. One of these bugs, however,
was pretty serious. dumb_register_dat_xm() was never coded! It was prototyped
in aldumb.h, so code would compile, but there would be an unresolved symbol
at the linking stage. This has been fixed.
Platforms other than Unix did not have a working 'make veryclean' target;
this has been fixed. In addition, the makefiles now use 'xcopy' instead of
'copy', since on some systems GNU Make seems to have trouble calling commands
built in to the shell.
Contrary to the errata that was on the DUMB website, the makeall.sh and
makecore.sh scripts actually DID install in /usr. This has now been
corrected, and regardless of whether you use these scripts or call make
directly, the files will now be installed to /usr/local by default.
The XM loader used to treat stereo samples as mono samples with the data for
the right channel positioned after the data for the left channel. This
generally resulted in an unwanted echo effect. This has been fixed.
When playing XM files, specifying an invalid instrument would cause an old
note on that channel to come back (roughly speaking). Fast Tracker 2 does not
exhibit this behaviour. This has been fixed.
The GCC makefiles used -mpentium, which is deprecated in gcc 3.x. This was
generating warnings, and has now been fixed.
In XM files, the length of a sample is stored in bytes. DUMB was assuming
that the length of a 16-bit sample would be even. I had two XM files where
this was not the case, and DUMB was unable to load them. This has been fixed.
In order to accommodate the extra part of the version number,
DUMB_REVISION_VERSION has been added. DUMB_VERSION has also been added in
order to facilitate checking if the version of DUMB installed is sufficient.
See docs/dumb.txt for details.
As a last-minute fix, the XM "Break to row" effect is now loaded properly. It
was necessary to convert from binary-coded decimal to hexadecimal (those who
have experience with Fast Tracker 2 will know what I mean). In short, this
means the effect will now work properly when breaking to row 10 or greater.
DUMB v0.8 had faulty release date constants; DUMB_MONTH and DUMB_DAY were
swapped! For this reason, DUMB_DATE should not be compared against any date
in 2002. This note has been added to docs/dumb.txt and also to dumb.h.
Please scroll to the end and read the release notes for the first version,
DUMB v0.7. Most of them apply equally to this release. However, the
non-portable code was rewritten for DUMB v0.8, so that point does not apply.
The point about length not being calculated also applies to XM files.
Enjoy :)
****************************************
*** DUMB v0.8, released 14 June 2002 ***
****************************************
Welcome to the second release of DUMB!
In addition to these notes, please read below the release notes for the
previous version, DUMB v0.7. Most of them apply equally to this release.
However, the non-portable code has been rewritten; DUMB should now port to
big-endian platforms.
The main improvement in this release of DUMB is the support for XM files.
Enormous thanks go to Julien Cugniere for working on this while I had to
revise for my exams!
There was a mistake in the makefiles in the last release. The debugging
Allegro interface library was mistakenly named libaldmbd.a instead of
libaldmd.a, meaning you had to compile with -laldmbd, contrary to what the
docs said. Apologies to everyone who lost sleep trying to work out what was
wrong! The reason for using libaldmd.a is to maintain compatibility with
plain DOS, where filenames are limited to eight characters (plus a three-
letter extension). The makefiles have now been changed to match the
information in the docs, so you may have to alter your project files
accordingly.
The example programs were faulty, and crashed on Windows if they were unable
to load the file. It was also difficult to work out how to exit them (you had
to click the taskbar button that didn't have a window, then press a key).
They have been improved in both these respects.
I have now added a docs/faq.txt file (Frequently Asked Questions), which is
based on problems and misconceptions people have had with the first release.
Please refer to it before contacting me with problems.
Thanks to networm for touching up the Unix makefile and writing the
instructions on using it.
Incidentally, today (Friday 14 June) is the Robinson College May Ball at
Cambridge Uni. God knows why it's called a May Ball if it's in June. I'm not
going myself (72 GBP, and I'd have to wear a suit, ugh), but with all the
noise outside I shall enjoy pumping up the speakers tonight!
****************************************
*** DUMB v0.7, released 2 March 2002 ***
****************************************
This is the first release of DUMB, and parts of the library are not
crystallised. Don't let this put you off! Provided you don't try to use any
features that aren't documented in docs/dumb.txt, the library should be rock
solid and you should be able to upgrade more or less without problems.
Here are some notes on this release:
- There is some non-portable code in this release of DUMB. It is likely that
the library will fail to load IT files with compressed samples on
big-endian machines such as the Apple Macintosh.
- If your program ever aborts with exit code 37 while loading an IT file,
PLEASE LET ME KNOW! The IT file in question has a stereo compressed sample
in it, and the format is unspecified for this case (Impulse Tracker itself
doesn't use stereo samples at all). I will need the IT file in question,
and any information you can give me about how the IT file was created (e.g.
what program). (If you don't get to see an exit code, let me know anyway.)
- If your program ever outputs a line resembling "Inst 01 Env: 0,64 8,32
15,48" to stderr while loading an IT file, PLEASE LET ME KNOW! You have an
old IT file (saved by an Impulse Tracker version older than 2.00), and
support for such files is untested.
- The length of IT and S3M files is not currently calculated. It is just set
to ten minutes.

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/* _______ ____ __ ___ ___
* \ _ \ \ / \ / \ \ / / ' ' '
* | | \ \ | | || | \/ | . .
* | | | | | | || ||\ /| |
* | | | | | | || || \/ | | ' ' '
* | | | | | | || || | | . .
* | |_/ / \ \__// || | |
* /_______/ynamic \____/niversal /__\ /____\usic /| . . ibliotheque
* / \
* / . \
* atexit.c - Library Clean-up Management. / / \ \
* | < / \_
* By entheh. | \/ /\ /
* \_ / > /
* | \ / /
* | ' /
* \__/
*/
#include <stdlib.h>
#include "dumb.h"
#include "internal/dumb.h"
typedef struct DUMB_ATEXIT_PROC
{
struct DUMB_ATEXIT_PROC *next;
void (*proc)(void);
}
DUMB_ATEXIT_PROC;
static DUMB_ATEXIT_PROC *dumb_atexit_proc = NULL;
int dumb_atexit(void (*proc)(void))
{
DUMB_ATEXIT_PROC *dap = dumb_atexit_proc;
while (dap) {
if (dap->proc == proc) return 0;
dap = dap->next;
}
dap = malloc(sizeof(*dap));
if (!dap)
return -1;
dap->next = dumb_atexit_proc;
dap->proc = proc;
dumb_atexit_proc = dap;
return 0;
}
void dumb_exit(void)
{
while (dumb_atexit_proc) {
DUMB_ATEXIT_PROC *next = dumb_atexit_proc->next;
(*dumb_atexit_proc->proc)();
free(dumb_atexit_proc);
dumb_atexit_proc = next;
}
}

42
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/* _______ ____ __ ___ ___
* \ _ \ \ / \ / \ \ / / ' ' '
* | | \ \ | | || | \/ | . .
* | | | | | | || ||\ /| |
* | | | | | | || || \/ | | ' ' '
* | | | | | | || || | | . .
* | |_/ / \ \__// || | |
* /_______/ynamic \____/niversal /__\ /____\usic /| . . ibliotheque
* / \
* / . \
* duhlen.c - Functions to set and return the / / \ \
* length of a DUH. | < / \_
* | \/ /\ /
* By entheh. \_ / > /
* | \ / /
* Note that the length of a DUH is a constant | ' /
* stored in the DUH struct and in the DUH disk \__/
* format. It will be calculated on loading for
* other formats in which the length is not explicitly stored. Also note that
* it does not necessarily correspond to the length of time for which the DUH
* will generate samples. Rather it represents a suitable point for a player
* such as Winamp to stop, and in any good DUH it will allow for any final
* flourish to fade out and be appreciated.
*/
#include "dumb.h"
#include "internal/dumb.h"
long duh_get_length(DUH *duh)
{
return duh ? duh->length : 0;
}
void duh_set_length(DUH *duh, long length)
{
if (duh)
duh->length = length;
}

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/* _______ ____ __ ___ ___
* \ _ \ \ / \ / \ \ / / ' ' '
* | | \ \ | | || | \/ | . .
* | | | | | | || ||\ /| |
* | | | | | | || || \/ | | ' ' '
* | | | | | | || || | | . .
* | |_/ / \ \__// || | |
* /_______/ynamic \____/niversal /__\ /____\usic /| . . ibliotheque
* / \
* / . \
* duhtag.c - Function to return the tags stored / / \ \
* in a DUH struct (typically author | < / \_
* information). | \/ /\ /
* \_ / > /
* By entheh. | \ / /
* | ' /
* \__/
*/
#include <string.h>
#include "dumb.h"
#include "internal/dumb.h"
const char *duh_get_tag(DUH *duh, const char *key)
{
int i;
ASSERT(key);
if (!duh || !duh->tag) return NULL;
for (i = 0; i < duh->n_tags; i++)
if (strcmp(key, duh->tag[i][0]) == 0)
return duh->tag[i][1];
return NULL;
}

401
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/* _______ ____ __ ___ ___
* \ _ \ \ / \ / \ \ / / ' ' '
* | | \ \ | | || | \/ | . .
* | | | | | | || ||\ /| |
* | | | | | | || || \/ | | ' ' '
* | | | | | | || || | | . .
* | |_/ / \ \__// || | |
* /_______/ynamic \____/niversal /__\ /____\usic /| . . ibliotheque
* / \
* / . \
* dumbfile.c - Hookable, strictly sequential / / \ \
* file input functions. | < / \_
* | \/ /\ /
* By entheh. \_ / > /
* | \ / /
* | ' /
* \__/
*/
#include <stdlib.h>
#include "dumb.h"
static DUMBFILE_SYSTEM *the_dfs = NULL;
void register_dumbfile_system(DUMBFILE_SYSTEM *dfs)
{
ASSERT(dfs);
ASSERT(dfs->open);
ASSERT(dfs->getc);
ASSERT(dfs->close);
the_dfs = dfs;
}
struct DUMBFILE
{
DUMBFILE_SYSTEM *dfs;
void *file;
long pos;
};
DUMBFILE *dumbfile_open(const char *filename)
{
DUMBFILE *f;
ASSERT(the_dfs);
f = malloc(sizeof(*f));
if (!f)
return NULL;
f->dfs = the_dfs;
f->file = (*the_dfs->open)(filename);
if (!f->file) {
free(f);
return NULL;
}
f->pos = 0;
return f;
}
DUMBFILE *dumbfile_open_ex(void *file, DUMBFILE_SYSTEM *dfs)
{
DUMBFILE *f;
ASSERT(dfs);
ASSERT(dfs->getc);
ASSERT(file);
f = malloc(sizeof(*f));
if (!f) {
if (dfs->close)
(*dfs->close)(file);
return NULL;
}
f->dfs = dfs;
f->file = file;
f->pos = 0;
return f;
}
long dumbfile_pos(DUMBFILE *f)
{
ASSERT(f);
return f->pos;
}
int dumbfile_skip(DUMBFILE *f, long n)
{
int rv;
ASSERT(f);
ASSERT(n >= 0);
if (f->pos < 0)
return -1;
f->pos += n;
if (f->dfs->skip) {
rv = (*f->dfs->skip)(f->file, n);
if (rv) {
f->pos = -1;
return rv;
}
} else {
while (n) {
rv = (*f->dfs->getc)(f->file);
if (rv < 0) {
f->pos = -1;
return rv;
}
n--;
}
}
return 0;
}
int dumbfile_getc(DUMBFILE *f)
{
int rv;
ASSERT(f);
if (f->pos < 0)
return -1;
rv = (*f->dfs->getc)(f->file);
if (rv < 0) {
f->pos = -1;
return rv;
}
f->pos++;
return rv;
}
int dumbfile_igetw(DUMBFILE *f)
{
int l, h;
ASSERT(f);
if (f->pos < 0)
return -1;
l = (*f->dfs->getc)(f->file);
if (l < 0) {
f->pos = -1;
return l;
}
h = (*f->dfs->getc)(f->file);
if (h < 0) {
f->pos = -1;
return h;
}
f->pos += 2;
return l | (h << 8);
}
int dumbfile_mgetw(DUMBFILE *f)
{
int l, h;
ASSERT(f);
if (f->pos < 0)
return -1;
h = (*f->dfs->getc)(f->file);
if (h < 0) {
f->pos = -1;
return h;
}
l = (*f->dfs->getc)(f->file);
if (l < 0) {
f->pos = -1;
return l;
}
f->pos += 2;
return l | (h << 8);
}
long dumbfile_igetl(DUMBFILE *f)
{
unsigned long rv, b;
ASSERT(f);
if (f->pos < 0)
return -1;
rv = (*f->dfs->getc)(f->file);
if ((signed long)rv < 0) {
f->pos = -1;
return rv;
}
b = (*f->dfs->getc)(f->file);
if ((signed long)b < 0) {
f->pos = -1;
return b;
}
rv |= b << 8;
b = (*f->dfs->getc)(f->file);
if ((signed long)b < 0) {
f->pos = -1;
return b;
}
rv |= b << 16;
b = (*f->dfs->getc)(f->file);
if ((signed long)b < 0) {
f->pos = -1;
return b;
}
rv |= b << 24;
f->pos += 4;
return rv;
}
long dumbfile_mgetl(DUMBFILE *f)
{
unsigned long rv, b;
ASSERT(f);
if (f->pos < 0)
return -1;
rv = (*f->dfs->getc)(f->file);
if ((signed long)rv < 0) {
f->pos = -1;
return rv;
}
rv <<= 24;
b = (*f->dfs->getc)(f->file);
if ((signed long)b < 0) {
f->pos = -1;
return b;
}
rv |= b << 16;
b = (*f->dfs->getc)(f->file);
if ((signed long)b < 0) {
f->pos = -1;
return b;
}
rv |= b << 8;
b = (*f->dfs->getc)(f->file);
if ((signed long)b < 0) {
f->pos = -1;
return b;
}
rv |= b;
f->pos += 4;
return rv;
}
unsigned long dumbfile_cgetul(DUMBFILE *f)
{
unsigned long rv = 0;
int v;
do {
v = dumbfile_getc(f);
if (v < 0)
return v;
rv <<= 7;
rv |= v & 0x7F;
} while (v & 0x80);
return rv;
}
signed long dumbfile_cgetsl(DUMBFILE *f)
{
unsigned long rv = dumbfile_cgetul(f);
if (f->pos < 0)
return rv;
return (rv >> 1) | (rv << 31);
}
long dumbfile_getnc(char *ptr, long n, DUMBFILE *f)
{
long rv;
ASSERT(f);
ASSERT(n >= 0);
if (f->pos < 0)
return -1;
if (f->dfs->getnc) {
rv = (*f->dfs->getnc)(ptr, n, f->file);
if (rv < n) {
f->pos = -1;
return MAX(rv, 0);
}
} else {
for (rv = 0; rv < n; rv++) {
int c = (*f->dfs->getc)(f->file);
if (c < 0) {
f->pos = -1;
return rv;
}
*ptr++ = c;
}
}
f->pos += rv;
return rv;
}
int dumbfile_error(DUMBFILE *f)
{
ASSERT(f);
return f->pos < 0;
}
int dumbfile_close(DUMBFILE *f)
{
int rv;
ASSERT(f);
rv = f->pos < 0;
if (f->dfs->close)
(*f->dfs->close)(f->file);
free(f);
return rv;
}

42
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/* _______ ____ __ ___ ___
* \ _ \ \ / \ / \ \ / / ' ' '
* | | \ \ | | || | \/ | . .
* | | | | | | || ||\ /| |
* | | | | | | || || \/ | | ' ' '
* | | | | | | || || | | . .
* | |_/ / \ \__// || | |
* /_______/ynamic \____/niversal /__\ /____\usic /| . . ibliotheque
* / \
* / . \
* loadduh.c - Code to read a DUH from a file, / / \ \
* opening and closing the file for | < / \_
* you. | \/ /\ /
* \_ / > /
* By entheh. | \ / /
* | ' /
* \__/
*/
#include "dumb.h"
#include "internal/dumb.h"
/* load_duh(): loads a .duh file, returning a pointer to a DUH struct.
* When you have finished with it, you must pass the pointer to unload_duh()
* so that the memory can be freed.
*/
DUH *load_duh(const char *filename)
{
DUH *duh;
DUMBFILE *f = dumbfile_open(filename);
if (!f)
return NULL;
duh = read_duh(f);
dumbfile_close(f);
return duh;
}

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/* _______ ____ __ ___ ___
* \ _ \ \ / \ / \ \ / / ' ' '
* | | \ \ | | || | \/ | . .
* | | | | | | || ||\ /| |
* | | | | | | || || \/ | | ' ' '
* | | | | | | || || | | . .
* | |_/ / \ \__// || | |
* /_______/ynamic \____/niversal /__\ /____\usic /| . . ibliotheque
* / \
* / . \
* makeduh.c - Function to construct a DUH from / / \ \
* its components. | < / \_
* | \/ /\ /
* By entheh. \_ / > /
* | \ / /
* | ' /
* \__/
*/
#include <stdlib.h>
#include <string.h>
#include "dumb.h"
#include "internal/dumb.h"
static DUH_SIGNAL *make_signal(DUH_SIGTYPE_DESC *desc, sigdata_t *sigdata)
{
DUH_SIGNAL *signal;
ASSERT((desc->start_sigrenderer && desc->end_sigrenderer) || (!desc->start_sigrenderer && !desc->end_sigrenderer));
ASSERT(desc->sigrenderer_generate_samples && desc->sigrenderer_get_current_sample);
signal = malloc(sizeof(*signal));
if (!signal) {
if (desc->unload_sigdata)
if (sigdata)
(*desc->unload_sigdata)(sigdata);
return NULL;
}
signal->desc = desc;
signal->sigdata = sigdata;
return signal;
}
DUH *make_duh(
long length,
int n_tags,
const char *const tags[][2],
int n_signals,
DUH_SIGTYPE_DESC *desc[],
sigdata_t *sigdata[]
)
{
DUH *duh = malloc(sizeof(*duh));
int i;
int fail;
if (duh) {
duh->n_signals = n_signals;
duh->signal = malloc(n_signals * sizeof(*duh->signal));
if (!duh->signal) {
free(duh);
duh = NULL;
}
}
if (!duh) {
for (i = 0; i < n_signals; i++)
if (desc[i]->unload_sigdata)
if (sigdata[i])
(*desc[i]->unload_sigdata)(sigdata[i]);
return NULL;
}
duh->n_tags = 0;
duh->tag = NULL;
fail = 0;
for (i = 0; i < n_signals; i++) {
duh->signal[i] = make_signal(desc[i], sigdata[i]);
if (!duh->signal[i])
fail = 1;
}
if (fail) {
unload_duh(duh);
return NULL;
}
duh->length = length;
{
int mem = n_tags * 2; /* account for NUL terminators here */
char *ptr;
for (i = 0; i < n_tags; i++)
mem += strlen(tags[i][0]) + strlen(tags[i][1]);
if (mem <= 0) return duh;
duh->tag = malloc(n_tags * sizeof(*duh->tag));
if (!duh->tag) return duh;
duh->tag[0][0] = malloc(mem);
if (!duh->tag[0][0]) {
free(duh->tag);
duh->tag = NULL;
return duh;
}
duh->n_tags = n_tags;
ptr = duh->tag[0][0];
for (i = 0; i < n_tags; i++) {
duh->tag[i][0] = ptr;
strcpy(ptr, tags[i][0]);
ptr += strlen(tags[i][0]) + 1;
duh->tag[i][1] = ptr;
strcpy(ptr, tags[i][1]);
ptr += strlen(tags[i][1]) + 1;
}
}
return duh;
}

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/* _______ ____ __ ___ ___
* \ _ \ \ / \ / \ \ / / ' ' '
* | | \ \ | | || | \/ | . .
* | | | | | | || ||\ /| |
* | | | | | | || || \/ | | ' ' '
* | | | | | | || || | | . .
* | |_/ / \ \__// || | |
* /_______/ynamic \____/niversal /__\ /____\usic /| . . ibliotheque
* / \
* / . \
* rawsig.c - Function to retrieve raw signal / / \ \
* data from a DUH provided you know | < / \_
* what type of signal it is. | \/ /\ /
* \_ / > /
* By entheh. | \ / /
* | ' /
* \__/
*/
#include <stdlib.h>
#include "dumb.h"
#include "internal/dumb.h"
/* You have to specify the type of sigdata, proving you know what to do with
* the pointer. If you get it wrong, you can expect NULL back.
*/
sigdata_t *duh_get_raw_sigdata(DUH *duh, int sig, long type)
{
DUH_SIGNAL *signal;
if (!duh) return NULL;
if ((unsigned int)sig >= (unsigned int)duh->n_signals) return NULL;
signal = duh->signal[sig];
if (signal && signal->desc->type == type)
return signal->sigdata;
return NULL;
}

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/* _______ ____ __ ___ ___
* \ _ \ \ / \ / \ \ / / ' ' '
* | | \ \ | | || | \/ | . .
* | | | | | | || ||\ /| |
* | | | | | | || || \/ | | ' ' '
* | | | | | | || || | | . .
* | |_/ / \ \__// || | |
* /_______/ynamic \____/niversal /__\ /____\usic /| . . ibliotheque
* / \
* / . \
* readduh.c - Code to read a DUH from an open / / \ \
* file. | < / \_
* | \/ /\ /
* By entheh. \_ / > /
* | \ / /
* | ' /
* \__/
*/
#include <stdlib.h>
#include "dumb.h"
#include "internal/dumb.h"
static DUH_SIGNAL *read_signal(DUH *duh, DUMBFILE *f)
{
DUH_SIGNAL *signal;
long type;
signal = malloc(sizeof(*signal));
if (!signal)
return NULL;
type = dumbfile_mgetl(f);
if (dumbfile_error(f)) {
free(signal);
return NULL;
}
signal->desc = _dumb_get_sigtype_desc(type);
if (!signal->desc) {
free(signal);
return NULL;
}
if (signal->desc->load_sigdata) {
signal->sigdata = (*signal->desc->load_sigdata)(duh, f);
if (!signal->sigdata) {
free(signal);
return NULL;
}
} else
signal->sigdata = NULL;
return signal;
}
/* read_duh(): reads a DUH from an already open DUMBFILE, and returns its
* pointer, or null on error. The file is not closed.
*/
DUH *read_duh(DUMBFILE *f)
{
DUH *duh;
int i;
if (dumbfile_mgetl(f) != DUH_SIGNATURE)
return NULL;
duh = malloc(sizeof(*duh));
if (!duh)
return NULL;
duh->length = dumbfile_igetl(f);
if (dumbfile_error(f) || duh->length <= 0) {
free(duh);
return NULL;
}
duh->n_signals = dumbfile_igetl(f);
if (dumbfile_error(f) || duh->n_signals <= 0) {
free(duh);
return NULL;
}
duh->signal = malloc(sizeof(*duh->signal) * duh->n_signals);
if (!duh->signal) {
free(duh);
return NULL;
}
for (i = 0; i < duh->n_signals; i++)
duh->signal[i] = NULL;
for (i = 0; i < duh->n_signals; i++) {
if (!(duh->signal[i] = read_signal(duh, f))) {
unload_duh(duh);
return NULL;
}
}
return duh;
}

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/* _______ ____ __ ___ ___
* \ _ \ \ / \ / \ \ / / ' ' '
* | | \ \ | | || | \/ | . .
* | | | | | | || ||\ /| |
* | | | | | | || || \/ | | ' ' '
* | | | | | | || || | | . .
* | |_/ / \ \__// || | |
* /_______/ynamic \____/niversal /__\ /____\usic /| . . ibliotheque
* / \
* / . \
* register.c - Signal type registration. / / \ \
* | < / \_
* By entheh. | \/ /\ /
* \_ / > /
* | \ / /
* | ' /
* \__/
*/
#include <stdlib.h>
#include "dumb.h"
#include "internal/dumb.h"
static DUH_SIGTYPE_DESC_LINK *sigtype_desc = NULL;
static DUH_SIGTYPE_DESC_LINK **sigtype_desc_tail = &sigtype_desc;
/* destroy_sigtypes(): frees all memory allocated while registering signal
* types. This function is set up to be called by dumb_exit().
*/
static void destroy_sigtypes(void)
{
DUH_SIGTYPE_DESC_LINK *desc_link = sigtype_desc, *next;
sigtype_desc = NULL;
sigtype_desc_tail = &sigtype_desc;
while (desc_link) {
next = desc_link->next;
free(desc_link);
desc_link = next;
}
}
/* dumb_register_sigtype(): registers a new signal type with DUMB. The signal
* type is identified by a four-character string (e.g. "WAVE"), which you can
* encode using the the DUMB_ID() macro (e.g. DUMB_ID('W','A','V','E')). The
* signal's behaviour is defined by four functions, whose pointers you pass
* here. See the documentation for details.
*
* If a DUH tries to use a signal that has not been registered using this
* function, then the library will fail to load the DUH.
*/
void dumb_register_sigtype(DUH_SIGTYPE_DESC *desc)
{
DUH_SIGTYPE_DESC_LINK *desc_link = sigtype_desc;
ASSERT((desc->load_sigdata && desc->unload_sigdata) || (!desc->load_sigdata && !desc->unload_sigdata));
ASSERT((desc->start_sigrenderer && desc->end_sigrenderer) || (!desc->start_sigrenderer && !desc->end_sigrenderer));
ASSERT(desc->sigrenderer_generate_samples && desc->sigrenderer_get_current_sample);
if (desc_link) {
do {
if (desc_link->desc->type == desc->type) {
desc_link->desc = desc;
return;
}
desc_link = desc_link->next;
} while (desc_link);
} else
dumb_atexit(&destroy_sigtypes);
desc_link = *sigtype_desc_tail = malloc(sizeof(DUH_SIGTYPE_DESC_LINK));
if (!desc_link)
return;
desc_link->next = NULL;
sigtype_desc_tail = &desc_link->next;
desc_link->desc = desc;
}
/* _dumb_get_sigtype_desc(): searches the registered functions for a signal
* type matching the parameter. If such a sigtype is found, it returns a
* pointer to a sigtype descriptor containing the necessary functions to
* manage the signal. If none is found, it returns NULL.
*/
DUH_SIGTYPE_DESC *_dumb_get_sigtype_desc(long type)
{
DUH_SIGTYPE_DESC_LINK *desc_link = sigtype_desc;
while (desc_link && desc_link->desc->type != type)
desc_link = desc_link->next;
return desc_link ? desc_link->desc : NULL;
}

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/* _______ ____ __ ___ ___
* \ _ \ \ / \ / \ \ / / ' ' '
* | | \ \ | | || | \/ | . .
* | | | | | | || ||\ /| |
* | | | | | | || || \/ | | ' ' '
* | | | | | | || || | | . .
* | |_/ / \ \__// || | |
* /_______/ynamic \____/niversal /__\ /____\usic /| . . ibliotheque
* / \
* / . \
* rendduh.c - Functions for rendering a DUH into / / \ \
* an end-user sample format. | < / \_
* | \/ /\ /
* By entheh. \_ / > /
* | \ / /
* | ' /
* \__/
*/
#include <stdlib.h>
#include <limits.h>
#include "dumb.h"
#include "internal/dumb.h"
/* On the x86, we can use some tricks to speed stuff up */
#if (defined _MSC_VER) || (defined __DJGPP__) || (defined __MINGW__)
// Can't we detect Linux and other x86 platforms here? :/
#define FAST_MID(var, min, max) { \
var -= (min); \
var &= (~var) >> (sizeof(var) * CHAR_BIT - 1); \
var += (min); \
var -= (max); \
var &= var >> (sizeof(var) * CHAR_BIT - 1); \
var += (max); \
}
#define CONVERT8(src, pos, signconv) { \
signed int f = (src + 0x8000) >> 16; \
FAST_MID(f, -128, 127); \
((char*)sptr)[pos] = (char)f ^ signconv; \
}
#define CONVERT16(src, pos, signconv) { \
signed int f = (src + 0x80) >> 8; \
FAST_MID(f, -32768, 32767); \
((short*)sptr)[pos] = (short)(f ^ signconv); \
}
#else
#define CONVERT8(src, pos, signconv) \
{ \
signed int f = (src + 0x8000) >> 16; \
f = MID(-128, f, 127); \
((char *)sptr)[pos] = (char)f ^ signconv; \
}
#define CONVERT16(src, pos, signconv) \
{ \
signed int f = (src + 0x80) >> 8; \
f = MID(-32768, f, 32767); \
((short *)sptr)[pos] = (short)(f ^ signconv); \
}
#endif
/* DEPRECATED */
DUH_SIGRENDERER *duh_start_renderer(DUH *duh, int n_channels, long pos)
{
return duh_start_sigrenderer(duh, 0, n_channels, pos);
}
long duh_render(
DUH_SIGRENDERER *sigrenderer,
int bits, int unsign,
float volume, float delta,
long size, void *sptr
)
{
long n;
sample_t **sampptr;
int n_channels;
ASSERT(bits == 8 || bits == 16);
ASSERT(sptr);
if (!sigrenderer)
return 0;
n_channels = duh_sigrenderer_get_n_channels(sigrenderer);
ASSERT(n_channels > 0);
/* This restriction will be removed when need be. At the moment, tightly
* optimised loops exist for exactly one or two channels.
*/
ASSERT(n_channels <= 2);
sampptr = allocate_sample_buffer(n_channels, size);
if (!sampptr)
return 0;
dumb_silence(sampptr[0], n_channels * size);
size = duh_sigrenderer_generate_samples(sigrenderer, volume, delta, size, sampptr);
if (bits == 16) {
int signconv = unsign ? 0x8000 : 0x0000;
for (n = 0; n < size * n_channels; n++) {
CONVERT16(sampptr[0][n], n, signconv);
}
} else {
char signconv = unsign ? 0x80 : 0x00;
for (n = 0; n < size * n_channels; n++) {
CONVERT8(sampptr[0][n], n, signconv);
}
}
destroy_sample_buffer(sampptr);
return size;
}
/* DEPRECATED */
int duh_renderer_get_n_channels(DUH_SIGRENDERER *dr)
{
return duh_sigrenderer_get_n_channels(dr);
}
/* DEPRECATED */
long duh_renderer_get_position(DUH_SIGRENDERER *dr)
{
return duh_sigrenderer_get_position(dr);
}
/* DEPRECATED */
void duh_end_renderer(DUH_SIGRENDERER *dr)
{
duh_end_sigrenderer(dr);
}
/* DEPRECATED */
DUH_SIGRENDERER *duh_renderer_encapsulate_sigrenderer(DUH_SIGRENDERER *sigrenderer)
{
return sigrenderer;
}
/* DEPRECATED */
DUH_SIGRENDERER *duh_renderer_get_sigrenderer(DUH_SIGRENDERER *dr)
{
return dr;
}
/* DEPRECATED */
DUH_SIGRENDERER *duh_renderer_decompose_to_sigrenderer(DUH_SIGRENDERER *dr)
{
return dr;
}

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/* _______ ____ __ ___ ___
* \ _ \ \ / \ / \ \ / / ' ' '
* | | \ \ | | || | \/ | . .
* | | | | | | || ||\ /| |
* | | | | | | || || \/ | | ' ' '
* | | | | | | || || | | . .
* | |_/ / \ \__// || | |
* /_______/ynamic \____/niversal /__\ /____\usic /| . . ibliotheque
* / \
* / . \
* rendsig.c - Wrappers to render samples from / / \ \
* the signals in a DUH. | < / \_
* | \/ /\ /
* By entheh. \_ / > /
* | \ / /
* | ' /
* \__/
*/
#include <stdlib.h>
#include "dumb.h"
#include "internal/dumb.h"
struct DUH_SIGRENDERER
{
DUH_SIGTYPE_DESC *desc;
sigrenderer_t *sigrenderer;
int n_channels;
long pos;
int subpos;
DUH_SIGRENDERER_SAMPLE_ANALYSER_CALLBACK callback;
void *callback_data;
};
DUH_SIGRENDERER *duh_start_sigrenderer(DUH *duh, int sig, int n_channels, long pos)
{
DUH_SIGRENDERER *sigrenderer;
DUH_SIGNAL *signal;
DUH_START_SIGRENDERER proc;
if (!duh)
return NULL;
if ((unsigned int)sig >= (unsigned int)duh->n_signals)
return NULL;
signal = duh->signal[sig];
if (!signal)
return NULL;
sigrenderer = malloc(sizeof(*sigrenderer));
if (!sigrenderer)
return NULL;
sigrenderer->desc = signal->desc;
proc = sigrenderer->desc->start_sigrenderer;
if (proc) {
duh->signal[sig] = NULL;
sigrenderer->sigrenderer = (*proc)(duh, signal->sigdata, n_channels, pos);
duh->signal[sig] = signal;
if (!sigrenderer->sigrenderer) {
free(sigrenderer);
return NULL;
}
} else
sigrenderer->sigrenderer = NULL;
sigrenderer->n_channels = n_channels;
sigrenderer->pos = pos;
sigrenderer->subpos = 0;
sigrenderer->callback = NULL;
return sigrenderer;
}
#include <stdio.h>
void duh_sigrenderer_set_callback(
DUH_SIGRENDERER *sigrenderer,
DUH_SIGRENDERER_CALLBACK callback, void *data
)
{
(void)sigrenderer;
(void)callback;
(void)data;
fprintf(stderr,
"Call to deprecated function duh_sigrenderer_set_callback(). The callback\n"
"was not installed. See dumb/docs/deprec.txt for how to fix this.\n");
}
void duh_sigrenderer_set_analyser_callback(
DUH_SIGRENDERER *sigrenderer,
DUH_SIGRENDERER_ANALYSER_CALLBACK callback, void *data
)
{
(void)sigrenderer;
(void)callback;
(void)data;
fprintf(stderr,
"Call to deprecated function duh_sigrenderer_set_analyser_callback(). The\n"
"callback was not installed. See dumb/docs/deprec.txt for how to fix this.\n");
}
void duh_sigrenderer_set_sample_analyser_callback(
DUH_SIGRENDERER *sigrenderer,
DUH_SIGRENDERER_SAMPLE_ANALYSER_CALLBACK callback, void *data
)
{
if (sigrenderer) {
sigrenderer->callback = callback;
sigrenderer->callback_data = data;
}
}
int duh_sigrenderer_get_n_channels(DUH_SIGRENDERER *sigrenderer)
{
return sigrenderer ? sigrenderer->n_channels : 0;
}
long duh_sigrenderer_get_position(DUH_SIGRENDERER *sigrenderer)
{
return sigrenderer ? sigrenderer->pos : -1;
}
void duh_sigrenderer_set_sigparam(
DUH_SIGRENDERER *sigrenderer,
unsigned char id, long value
)
{
DUH_SIGRENDERER_SET_SIGPARAM proc;
if (!sigrenderer) return;
proc = sigrenderer->desc->sigrenderer_set_sigparam;
if (proc)
(*proc)(sigrenderer->sigrenderer, id, value);
else
TRACE("Parameter #%d = %ld for signal %c%c%c%c, which does not take parameters.\n",
(int)id,
value,
(int)(sigrenderer->desc->type >> 24),
(int)(sigrenderer->desc->type >> 16),
(int)(sigrenderer->desc->type >> 8),
(int)(sigrenderer->desc->type));
}
long duh_sigrenderer_generate_samples(
DUH_SIGRENDERER *sigrenderer,
float volume, float delta,
long size, sample_t **samples
)
{
long rendered;
LONG_LONG t;
if (!sigrenderer) return 0;
rendered = (*sigrenderer->desc->sigrenderer_generate_samples)
(sigrenderer->sigrenderer, volume, delta, size, samples);
if (rendered) {
if (sigrenderer->callback)
(*sigrenderer->callback)(sigrenderer->callback_data,
(const sample_t *const *)samples, sigrenderer->n_channels, rendered);
t = sigrenderer->subpos + (LONG_LONG)(delta * 65536.0 + 0.5) * rendered;
sigrenderer->pos += (long)(t >> 16);
sigrenderer->subpos = (int)t & 65535;
}
return rendered;
}
/* DEPRECATED */
long duh_sigrenderer_get_samples(
DUH_SIGRENDERER *sigrenderer,
float volume, float delta,
long size, sample_t **samples
)
{
sample_t **s;
long rendered;
long i;
int j;
if (!samples) return duh_sigrenderer_generate_samples(sigrenderer, volume, delta, size, NULL);
s = allocate_sample_buffer(sigrenderer->n_channels, size);
if (!s) return 0;
dumb_silence(s[0], sigrenderer->n_channels * size);
rendered = duh_sigrenderer_generate_samples(sigrenderer, volume, delta, size, s);
for (j = 0; j < sigrenderer->n_channels; j++)
for (i = 0; i < rendered; i++)
samples[j][i] += s[0][i*sigrenderer->n_channels+j];
destroy_sample_buffer(s);
return rendered;
}
/* DEPRECATED */
long duh_render_signal(
DUH_SIGRENDERER *sigrenderer,
float volume, float delta,
long size, sample_t **samples
)
{
sample_t **s;
long rendered;
long i;
int j;
if (!samples) return duh_sigrenderer_generate_samples(sigrenderer, volume, delta, size, NULL);
s = allocate_sample_buffer(sigrenderer->n_channels, size);
if (!s) return 0;
dumb_silence(s[0], sigrenderer->n_channels * size);
rendered = duh_sigrenderer_generate_samples(sigrenderer, volume, delta, size, s);
for (j = 0; j < sigrenderer->n_channels; j++)
for (i = 0; i < rendered; i++)
samples[j][i] += s[0][i*sigrenderer->n_channels+j] >> 8;
destroy_sample_buffer(s);
return rendered;
}
void duh_sigrenderer_get_current_sample(DUH_SIGRENDERER *sigrenderer, float volume, sample_t *samples)
{
if (sigrenderer)
(*sigrenderer->desc->sigrenderer_get_current_sample)(sigrenderer->sigrenderer, volume, samples);
}
void duh_end_sigrenderer(DUH_SIGRENDERER *sigrenderer)
{
if (sigrenderer) {
if (sigrenderer->desc->end_sigrenderer)
if (sigrenderer->sigrenderer)
(*sigrenderer->desc->end_sigrenderer)(sigrenderer->sigrenderer);
free(sigrenderer);
}
}
DUH_SIGRENDERER *duh_encapsulate_raw_sigrenderer(sigrenderer_t *vsigrenderer, DUH_SIGTYPE_DESC *desc, int n_channels, long pos)
{
DUH_SIGRENDERER *sigrenderer;
if (desc->start_sigrenderer && !vsigrenderer) return NULL;
sigrenderer = malloc(sizeof(*sigrenderer));
if (!sigrenderer) {
if (desc->end_sigrenderer)
if (vsigrenderer)
(*desc->end_sigrenderer)(vsigrenderer);
return NULL;
}
sigrenderer->desc = desc;
sigrenderer->sigrenderer = vsigrenderer;
sigrenderer->n_channels = n_channels;
sigrenderer->pos = pos;
sigrenderer->subpos = 0;
sigrenderer->callback = NULL;
return sigrenderer;
}
sigrenderer_t *duh_get_raw_sigrenderer(DUH_SIGRENDERER *sigrenderer, long type)
{
if (sigrenderer && sigrenderer->desc->type == type)
return sigrenderer->sigrenderer;
return NULL;
}
#if 0
// This function is disabled because we don't know whether we want to destroy
// the sigrenderer if the type doesn't match. We don't even know if we need
// the function at all. Who would want to keep an IT_SIGRENDERER (for
// instance) without keeping the DUH_SIGRENDERER?
sigrenderer_t *duh_decompose_to_raw_sigrenderer(DUH_SIGRENDERER *sigrenderer, long type)
{
if (sigrenderer && sigrenderer->desc->type == type) {
if (sigrenderer) {
if (sigrenderer->desc->end_sigrenderer)
if (sigrenderer->sigrenderer)
(*sigrenderer->desc->end_sigrenderer)(sigrenderer->sigrenderer);
free(sigrenderer);
}
return sigrenderer->sigrenderer;
}
return NULL;
}
#endif

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/* _______ ____ __ ___ ___
* \ _ \ \ / \ / \ \ / / ' ' '
* | | \ \ | | || | \/ | . .
* | | | | | | || ||\ /| |
* | | | | | | || || \/ | | ' ' '
* | | | | | | || || | | . .
* | |_/ / \ \__// || | |
* /_______/ynamic \____/niversal /__\ /____\usic /| . . ibliotheque
* / \
* / . \
* unload.c - Code to free a DUH from memory. / / \ \
* | < / \_
* By entheh. | \/ /\ /
* \_ / > /
* | \ / /
* | ' /
* \__/
*/
#include <stdlib.h>
#include "dumb.h"
#include "internal/dumb.h"
static void destroy_signal(DUH_SIGNAL *signal)
{
if (signal) {
if (signal->desc)
if (signal->desc->unload_sigdata)
if (signal->sigdata)
(*signal->desc->unload_sigdata)(signal->sigdata);
free(signal);
}
}
/* unload_duh(): destroys a DUH struct. You must call this for every DUH
* struct created, when you've finished with it.
*/
void unload_duh(DUH *duh)
{
int i;
if (duh) {
if (duh->signal) {
for (i = 0; i < duh->n_signals; i++)
destroy_signal(duh->signal[i]);
free(duh->signal);
}
if (duh->tag) {
if (duh->tag[0][0])
free(duh->tag[0][0]);
free(duh->tag);
}
free(duh);
}
}

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/* _______ ____ __ ___ ___
* \ _ \ \ / \ / \ \ / / ' ' '
* | | \ \ | | || | \/ | . .
* | | | | | | || ||\ /| |
* | | | | | | || || \/ | | ' ' '
* | | | | | | || || | | . .
* | |_/ / \ \__// || | |
* /_______/ynamic \____/niversal /__\ /____\usic /| . . ibliotheque
* / \
* / . \
* clickrem.c - Click removal helpers. / / \ \
* | < / \_
* By entheh. | \/ /\ /
* \_ / > /
* | \ / /
* | ' /
* \__/
*/
#include <stdlib.h>
#include <math.h>
#include "dumb.h"
typedef struct DUMB_CLICK DUMB_CLICK;
struct DUMB_CLICK_REMOVER
{
DUMB_CLICK *click;
int n_clicks;
int offset;
};
struct DUMB_CLICK
{
DUMB_CLICK *next;
long pos;
sample_t step;
};
DUMB_CLICK_REMOVER *dumb_create_click_remover(void)
{
DUMB_CLICK_REMOVER *cr = malloc(sizeof(*cr));
if (!cr) return NULL;
cr->click = NULL;
cr->n_clicks = 0;
cr->offset = 0;
return cr;
}
void dumb_record_click(DUMB_CLICK_REMOVER *cr, long pos, sample_t step)
{
DUMB_CLICK *click;
ASSERT(pos >= 0);
if (!cr || !step) return;
if (pos == 0) {
cr->offset -= step;
return;
}
click = malloc(sizeof(*click));
if (!click) return;
click->pos = pos;
click->step = step;
click->next = cr->click;
cr->click = click;
cr->n_clicks++;
}
static DUMB_CLICK *dumb_click_mergesort(DUMB_CLICK *click, int n_clicks)
{
int i;
DUMB_CLICK *c1, *c2, **cp;
if (n_clicks <= 1) return click;
/* Split the list into two */
c1 = click;
cp = &c1;
for (i = 0; i < n_clicks; i += 2) cp = &(*cp)->next;
c2 = *cp;
*cp = NULL;
/* Sort the sublists */
c1 = dumb_click_mergesort(c1, (n_clicks + 1) >> 1);
c2 = dumb_click_mergesort(c2, n_clicks >> 1);
/* Merge them */
cp = &click;
while (c1 && c2) {
if (c1->pos > c2->pos) {
*cp = c2;
c2 = c2->next;
} else {
*cp = c1;
c1 = c1->next;
}
cp = &(*cp)->next;
}
if (c2)
*cp = c2;
else
*cp = c1;
return click;
}
void dumb_remove_clicks(DUMB_CLICK_REMOVER *cr, sample_t *samples, long length, int step, float halflife)
{
DUMB_CLICK *click;
long pos = 0;
int offset;
int factor;
if (!cr) return;
factor = (int)floor(pow(0.5, 1.0/halflife) * (1U << 31));
click = dumb_click_mergesort(cr->click, cr->n_clicks);
cr->click = NULL;
cr->n_clicks = 0;
length *= step;
while (click) {
DUMB_CLICK *next = click->next;
int end = click->pos * step;
ASSERT(end <= length);
offset = cr->offset;
if (offset < 0) {
offset = -offset;
while (pos < end) {
samples[pos] -= offset;
offset = (int)((LONG_LONG)(offset << 1) * factor >> 32);
pos += step;
}
offset = -offset;
} else {
while (pos < end) {
samples[pos] += offset;
offset = (int)((LONG_LONG)(offset << 1) * factor >> 32);
pos += step;
}
}
cr->offset = offset - click->step;
free(click);
click = next;
}
offset = cr->offset;
if (offset < 0) {
offset = -offset;
while (pos < length) {
samples[pos] -= offset;
offset = (int)((LONG_LONG)(offset << 1) * factor >> 32);
pos += step;
}
offset = -offset;
} else {
while (pos < length) {
samples[pos] += offset;
offset = (int)((LONG_LONG)(offset << 1) * factor >> 32);
pos += step;
}
}
cr->offset = offset;
}
sample_t dumb_click_remover_get_offset(DUMB_CLICK_REMOVER *cr)
{
return cr ? cr->offset : 0;
}
void dumb_destroy_click_remover(DUMB_CLICK_REMOVER *cr)
{
if (cr) {
DUMB_CLICK *click = cr->click;
while (click) {
DUMB_CLICK *next = click->next;
free(click);
click = next;
}
free(cr);
}
}
DUMB_CLICK_REMOVER **dumb_create_click_remover_array(int n)
{
int i;
DUMB_CLICK_REMOVER **cr;
if (n <= 0) return NULL;
cr = malloc(n * sizeof(*cr));
if (!cr) return NULL;
for (i = 0; i < n; i++) cr[i] = dumb_create_click_remover();
return cr;
}
void dumb_record_click_array(int n, DUMB_CLICK_REMOVER **cr, long pos, sample_t *step)
{
if (cr) {
int i;
for (i = 0; i < n; i++)
dumb_record_click(cr[i], pos, step[i]);
}
}
void dumb_record_click_negative_array(int n, DUMB_CLICK_REMOVER **cr, long pos, sample_t *step)
{
if (cr) {
int i;
for (i = 0; i < n; i++)
dumb_record_click(cr[i], pos, -step[i]);
}
}
void dumb_remove_clicks_array(int n, DUMB_CLICK_REMOVER **cr, sample_t **samples, long length, float halflife)
{
if (cr) {
int i;
for (i = 0; i < n >> 1; i++) {
dumb_remove_clicks(cr[i << 1], samples[i], length, 2, halflife);
dumb_remove_clicks(cr[(i << 1) + 1], samples[i] + 1, length, 2, halflife);
}
if (n & 1)
dumb_remove_clicks(cr[i << 1], samples[i], length, 1, halflife);
}
}
void dumb_click_remover_get_offset_array(int n, DUMB_CLICK_REMOVER **cr, sample_t *offset)
{
if (cr) {
int i;
for (i = 0; i < n; i++)
if (cr[i]) offset[i] += cr[i]->offset;
}
}
void dumb_destroy_click_remover_array(int n, DUMB_CLICK_REMOVER **cr)
{
if (cr) {
int i;
for (i = 0; i < n; i++) dumb_destroy_click_remover(cr[i]);
free(cr);
}
}

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/* _______ ____ __ ___ ___
* \ _ \ \ / \ / \ \ / / ' ' '
* | | \ \ | | || | \/ | . .
* | | | | | | || ||\ /| |
* | | | | | | || || \/ | | ' ' '
* | | | | | | || || | | . .
* | |_/ / \ \__// || | |
* /_______/ynamic \____/niversal /__\ /____\usic /| . . ibliotheque
* / \
* / . \
* memfile.c - Module for reading data from / / \ \
* memory using a DUMBFILE. | < / \_
* | \/ /\ /
* By entheh. \_ / > /
* | \ / /
* | ' /
* \__/
*/
#include <stdlib.h>
#include <string.h>
#include "dumb.h"
typedef struct MEMFILE MEMFILE;
struct MEMFILE
{
const char *ptr;
long left;
};
static int dumb_memfile_skip(void *f, long n)
{
MEMFILE *m = f;
if (n > m->left) return -1;
m->ptr += n;
m->left -= n;
return 0;
}
static int dumb_memfile_getc(void *f)
{
MEMFILE *m = f;
if (m->left <= 0) return -1;
m->left--;
return *(const unsigned char *)m->ptr++;
}
static long dumb_memfile_getnc(char *ptr, long n, void *f)
{
MEMFILE *m = f;
if (n > m->left) n = m->left;
memcpy(ptr, m->ptr, n);
m->ptr += n;
m->left -= n;
return n;
}
static void dumb_memfile_close(void *f)
{
free(f);
}
static DUMBFILE_SYSTEM memfile_dfs = {
NULL,
&dumb_memfile_skip,
&dumb_memfile_getc,
&dumb_memfile_getnc,
&dumb_memfile_close
};
DUMBFILE *dumbfile_open_memory(const char *data, long size)
{
MEMFILE *m = malloc(sizeof(*m));
if (!m) return NULL;
m->ptr = data;
m->left = size;
return dumbfile_open_ex(m, &memfile_dfs);
}

134
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/* _______ ____ __ ___ ___
* \ _ \ \ / \ / \ \ / / ' ' '
* | | \ \ | | || | \/ | . .
* | | | | | | || ||\ /| |
* | | | | | | || || \/ | | ' ' '
* | | | | | | || || | | . .
* | |_/ / \ \__// || | |
* /_______/ynamic \____/niversal /__\ /____\usic /| . . ibliotheque
* / \
* / . \
* resamp2.inc - Resampling helper template. / / \ \
* | < / \_
* By Bob and entheh. | \/ /\ /
* \_ / > /
* In order to find a good trade-off between | \ / /
* speed and accuracy in this code, some tests | ' /
* were carried out regarding the behaviour of \__/
* long long ints with gcc. The following code
* was tested:
*
* int a, b, c;
* c = ((long long)a * b) >> 16;
*
* DJGPP GCC Version 3.0.3 generated the following assembly language code for
* the multiplication and scaling, leaving the 32-bit result in EAX.
*
* movl -8(%ebp), %eax ; read one int into EAX
* imull -4(%ebp) ; multiply by the other; result goes in EDX:EAX
* shrdl $16, %edx, %eax ; shift EAX right 16, shifting bits in from EDX
*
* Note that a 32*32->64 multiplication is performed, allowing for high
* accuracy. On the Pentium 2 and above, shrdl takes two cycles (generally),
* so it is a minor concern when four multiplications are being performed
* (the cubic resampler). On the Pentium MMX and earlier, it takes four or
* more cycles, so this method is unsuitable for use in the low-quality
* resamplers.
*
* Since "long long" is a gcc-specific extension, we use LONG_LONG instead,
* defined in dumb.h. We may investigate later what code MSVC generates, but
* if it seems too slow then we suggest you use a good compiler.
*
* FIXME: these comments are somewhat out of date now.
*/
#define SUFFIX3 _1
/* For convenience, returns nonzero on stop. */
static int process_pickup(DUMB_RESAMPLER *resampler)
{
if (resampler->overshot < 0) {
resampler->overshot = 0;
dumb_resample(resampler, NULL, 2, MONO_DEST_VOLUME_ZEROS, 1.0f); /* Doesn't matter which SUFFIX3. */
COPYSRC(resampler->X, 0, resampler->X, 1);
}
for (;;) {
SRCTYPE *src = resampler->src;
if (resampler->dir < 0) {
if (resampler->overshot >= 3 && resampler->pos+3 >= resampler->start) COPYSRC(resampler->X, 0, src, resampler->pos+3);
if (resampler->overshot >= 2 && resampler->pos+2 >= resampler->start) COPYSRC(resampler->X, 1, src, resampler->pos+2);
if (resampler->overshot >= 1 && resampler->pos+1 >= resampler->start) COPYSRC(resampler->X, 2, src, resampler->pos+1);
resampler->overshot = resampler->start - resampler->pos - 1;
} else {
if (resampler->overshot >= 3 && resampler->pos-3 < resampler->end) COPYSRC(resampler->X, 0, src, resampler->pos-3);
if (resampler->overshot >= 2 && resampler->pos-2 < resampler->end) COPYSRC(resampler->X, 1, src, resampler->pos-2);
if (resampler->overshot >= 1 && resampler->pos-1 < resampler->end) COPYSRC(resampler->X, 2, src, resampler->pos-1);
resampler->overshot = resampler->pos - resampler->end;
}
if (resampler->overshot < 0) {
resampler->overshot = 0;
return 0;
}
if (!resampler->pickup) {
resampler->dir = 0;
return 1;
}
(*resampler->pickup)(resampler, resampler->pickup_data);
if (resampler->dir == 0) return 1;
ASSERT(resampler->dir == -1 || resampler->dir == 1);
}
}
/* Create mono destination resampler. */
/* SUFFIX3 was set above. */
#define VOLUME_PARAMETERS MONO_DEST_VOLUME_PARAMETERS
#define VOLUME_VARIABLES MONO_DEST_VOLUME_VARIABLES
#define SET_VOLUME_VARIABLES SET_MONO_DEST_VOLUME_VARIABLES
#define VOLUMES_ARE_ZERO MONO_DEST_VOLUMES_ARE_ZERO
#define MIX_ALIAS(op, offset) MONO_DEST_MIX_ALIAS(op, offset)
#define MIX_LINEAR(op, o0, o1) MONO_DEST_MIX_LINEAR(op, o0, o1)
#define MIX_CUBIC(op, x0, x3, o0, o1, o2, o3) MONO_DEST_MIX_CUBIC(op, x0, x3, o0, o1, o2, o3)
#define MIX_ZEROS(op) *dst++ op 0
#include "resamp3.inc"
/* Create stereo destination resampler. */
#define SUFFIX3 _2
#define VOLUME_PARAMETERS float volume_left, float volume_right
#define VOLUME_VARIABLES lvol, rvol
#define SET_VOLUME_VARIABLES { \
lvol = (int)floor(volume_left * 65536.0 + 0.5); \
rvol = (int)floor(volume_right * 65536.0 + 0.5); \
}
#define VOLUMES_ARE_ZERO (lvol == 0 && rvol == 0)
#define MIX_ALIAS(op, offset) STEREO_DEST_MIX_ALIAS(op, offset)
#define MIX_LINEAR(op, o0, o1) STEREO_DEST_MIX_LINEAR(op, o0, o1)
#define MIX_CUBIC(op, x0, x3, o0, o1, o2, o3) STEREO_DEST_MIX_CUBIC(op, x0, x3, o0, o1, o2, o3)
#define MIX_ZEROS(op) { *dst++ op 0; *dst++ op 0; }
#include "resamp3.inc"
#undef STEREO_DEST_MIX_CUBIC
#undef MONO_DEST_MIX_CUBIC
#undef STEREO_DEST_MIX_LINEAR
#undef MONO_DEST_MIX_LINEAR
#undef STEREO_DEST_MIX_ALIAS
#undef MONO_DEST_MIX_ALIAS
#undef MONO_DEST_VOLUMES_ARE_ZERO
#undef SET_MONO_DEST_VOLUME_VARIABLES
#undef MONO_DEST_VOLUME_ZEROS
#undef MONO_DEST_VOLUME_VARIABLES
#undef MONO_DEST_VOLUME_PARAMETERS
#undef COPYSRC2
#undef COPYSRC
#undef DIVIDE_BY_SRC_CHANNELS
#undef SRC_CHANNELS
#undef SUFFIX2

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/* _______ ____ __ ___ ___
* \ _ \ \ / \ / \ \ / / ' ' '
* | | \ \ | | || | \/ | . .
* | | | | | | || ||\ /| |
* | | | | | | || || \/ | | ' ' '
* | | | | | | || || | | . .
* | |_/ / \ \__// || | |
* /_______/ynamic \____/niversal /__\ /____\usic /| . . ibliotheque
* / \
* / . \
* resamp3.inc - Resampling helper template. / / \ \
* | < / \_
* By Bob and entheh. | \/ /\ /
* \_ / > /
* In order to find a good trade-off between | \ / /
* speed and accuracy in this code, some tests | ' /
* were carried out regarding the behaviour of \__/
* long long ints with gcc. The following code
* was tested:
*
* int a, b, c;
* c = ((long long)a * b) >> 16;
*
* DJGPP GCC Version 3.0.3 generated the following assembly language code for
* the multiplication and scaling, leaving the 32-bit result in EAX.
*
* movl -8(%ebp), %eax ; read one int into EAX
* imull -4(%ebp) ; multiply by the other; result goes in EDX:EAX
* shrdl $16, %edx, %eax ; shift EAX right 16, shifting bits in from EDX
*
* Note that a 32*32->64 multiplication is performed, allowing for high
* accuracy. On the Pentium 2 and above, shrdl takes two cycles (generally),
* so it is a minor concern when four multiplications are being performed
* (the cubic resampler). On the Pentium MMX and earlier, it takes four or
* more cycles, so this method is unsuitable for use in the low-quality
* resamplers.
*
* Since "long long" is a gcc-specific extension, we use LONG_LONG instead,
* defined in dumb.h. We may investigate later what code MSVC generates, but
* if it seems too slow then we suggest you use a good compiler.
*
* FIXME: these comments are somewhat out of date now.
*/
long dumb_resample(DUMB_RESAMPLER *resampler, sample_t *dst, long dst_size, VOLUME_PARAMETERS, float delta)
{
int dt;
int VOLUME_VARIABLES;
long done;
long todo;
int quality;
if (!resampler || resampler->dir == 0) return 0;
ASSERT(resampler->dir == -1 || resampler->dir == 1);
done = 0;
dt = (int)(delta * 65536.0 + 0.5);
SET_VOLUME_VARIABLES;
if (VOLUMES_ARE_ZERO) dst = NULL;
init_cubic();
quality = dumb_resampling_quality;
if (quality > resampler->max_quality) quality = resampler->max_quality;
else if (quality < resampler->min_quality) quality = resampler->min_quality;
while (done < dst_size) {
if (process_pickup(resampler)) return done;
if ((resampler->dir ^ dt) < 0)
dt = -dt;
if (resampler->dir < 0)
todo = (long)((((LONG_LONG)(resampler->pos - resampler->start) << 16) + resampler->subpos - dt) / -dt);
else
todo = (long)((((LONG_LONG)(resampler->end - resampler->pos) << 16) - resampler->subpos - 1 + dt) / dt);
if (todo < 0)
todo = 0;
else if (todo > dst_size - done)
todo = dst_size - done;
done += todo;
{
SRCTYPE *src = resampler->src;
long pos = resampler->pos;
int subpos = resampler->subpos;
long diff = pos;
long overshot;
if (resampler->dir < 0) {
if (!dst) {
/* Silence or simulation */
LONG_LONG new_subpos = subpos + (LONG_LONG)dt * todo;
pos += (long)(new_subpos >> 16);
subpos = (long)new_subpos & 65535;
} else if (quality <= DUMB_RQ_ALIASING) {
/* Aliasing, backwards */
SRCTYPE xbuf[2*SRC_CHANNELS];
SRCTYPE *x = &xbuf[0];
SRCTYPE *xstart;
COPYSRC(xbuf, 0, resampler->X, 1);
COPYSRC(xbuf, 1, resampler->X, 2);
while (todo && x < &xbuf[2*SRC_CHANNELS]) {
// TODO: check what happens when multiple tempo slides occur per row
HEAVYASSERT(pos >= resampler->start);
MIX_ALIAS(+=, 0);
subpos += dt;
pos += subpos >> 16;
x -= (subpos >> 16) * SRC_CHANNELS;
subpos &= 65535;
todo--;
}
x = xstart = &src[pos*SRC_CHANNELS];
LOOP4(todo,
MIX_ALIAS(+=, 2);
subpos += dt;
x += (subpos >> 16) * SRC_CHANNELS;
subpos &= 65535;
);
pos += DIVIDE_BY_SRC_CHANNELS(x - xstart);
} else if (quality <= DUMB_RQ_LINEAR) {
/* Linear interpolation, backwards */
SRCTYPE xbuf[3*SRC_CHANNELS];
SRCTYPE *x = &xbuf[1*SRC_CHANNELS];
COPYSRC(xbuf, 0, resampler->X, 1);
COPYSRC(xbuf, 1, resampler->X, 2);
COPYSRC(xbuf, 2, src, pos);
while (todo && x < &xbuf[3*SRC_CHANNELS]) {
HEAVYASSERT(pos >= resampler->start);
MIX_LINEAR(+=, 0, -1);
subpos += dt;
pos += subpos >> 16;
x -= (subpos >> 16) * SRC_CHANNELS;
subpos &= 65535;
todo--;
}
// TODO: use xstart for others too
x = &src[pos*SRC_CHANNELS];
LOOP4(todo,
HEAVYASSERT(pos >= resampler->start);
MIX_LINEAR(+=, 1, 2);
subpos += dt;
pos += subpos >> 16;
x += (subpos >> 16) * SRC_CHANNELS;
subpos &= 65535;
);
} else {
/* Cubic interpolation, backwards */
SRCTYPE xbuf[6*SRC_CHANNELS];
SRCTYPE *x = &xbuf[3*SRC_CHANNELS];
COPYSRC(xbuf, 0, resampler->X, 0);
COPYSRC(xbuf, 1, resampler->X, 1);
COPYSRC(xbuf, 2, resampler->X, 2);
COPYSRC(xbuf, 3, src, pos);
if (pos-1 >= resampler->start) COPYSRC(xbuf, 4, src, pos-1);
if (pos-2 >= resampler->start) COPYSRC(xbuf, 5, src, pos-2);
while (todo && x < &xbuf[6*SRC_CHANNELS]) {
HEAVYASSERT(pos >= resampler->start);
MIX_CUBIC(+=, x, x, 0, -1, -2, -3);
subpos += dt;
pos += subpos >> 16;
x -= (subpos >> 16) * SRC_CHANNELS;
subpos &= 65535;
todo--;
}
x = &src[pos*SRC_CHANNELS];
LOOP4(todo,
HEAVYASSERT(pos >= resampler->start);
MIX_CUBIC(+=, x, x, 0, 1, 2, 3);
subpos += dt;
pos += subpos >> 16;
x += (subpos >> 16) * SRC_CHANNELS;
subpos &= 65535;
);
}
diff = diff - pos;
overshot = resampler->start - pos - 1;
if (diff >= 3) {
COPYSRC2(resampler->X, 0, overshot < 3, src, pos+3);
COPYSRC2(resampler->X, 1, overshot < 2, src, pos+2);
COPYSRC2(resampler->X, 2, overshot < 1, src, pos+1);
} else if (diff >= 2) {
COPYSRC(resampler->X, 0, resampler->X, 2);
COPYSRC2(resampler->X, 1, overshot < 2, src, pos+2);
COPYSRC2(resampler->X, 2, overshot < 1, src, pos+1);
} else if (diff >= 1) {
COPYSRC(resampler->X, 0, resampler->X, 1);
COPYSRC(resampler->X, 1, resampler->X, 2);
COPYSRC2(resampler->X, 2, overshot < 1, src, pos+1);
}
} else {
if (!dst) {
/* Silence or simulation */
LONG_LONG new_subpos = subpos + (LONG_LONG)dt * todo;
pos += (long)(new_subpos >> 16);
subpos = (long)new_subpos & 65535;
} else if (dumb_resampling_quality <= DUMB_RQ_ALIASING) {
/* Aliasing, forwards */
SRCTYPE xbuf[2*SRC_CHANNELS];
SRCTYPE *x = &xbuf[0];
SRCTYPE *xstart;
COPYSRC(xbuf, 0, resampler->X, 1);
COPYSRC(xbuf, 1, resampler->X, 2);
while (todo && x < &xbuf[2*SRC_CHANNELS]) {
HEAVYASSERT(pos < resampler->end);
MIX_ALIAS(+=, 0);
subpos += dt;
pos += subpos >> 16;
x += (subpos >> 16) * SRC_CHANNELS;
subpos &= 65535;
todo--;
}
x = xstart = &src[pos*SRC_CHANNELS];
LOOP4(todo,
MIX_ALIAS(+=, -2);
subpos += dt;
x += (subpos >> 16) * SRC_CHANNELS;
subpos &= 65535;
);
pos += DIVIDE_BY_SRC_CHANNELS(x - xstart);
} else if (dumb_resampling_quality <= DUMB_RQ_LINEAR) {
/* Linear interpolation, forwards */
SRCTYPE xbuf[3*SRC_CHANNELS];
SRCTYPE *x = &xbuf[1*SRC_CHANNELS];
COPYSRC(xbuf, 0, resampler->X, 1);
COPYSRC(xbuf, 1, resampler->X, 2);
COPYSRC(xbuf, 2, src, pos);
while (todo && x < &xbuf[3*SRC_CHANNELS]) {
HEAVYASSERT(pos < resampler->end);
MIX_LINEAR(+=, -1, 0);
subpos += dt;
pos += subpos >> 16;
x += (subpos >> 16) * SRC_CHANNELS;
subpos &= 65535;
todo--;
}
x = &src[pos*SRC_CHANNELS];
LOOP4(todo,
HEAVYASSERT(pos < resampler->end);
MIX_LINEAR(+=, -2, -1);
subpos += dt;
pos += subpos >> 16;
x += (subpos >> 16) * SRC_CHANNELS;
subpos &= 65535;
);
} else {
/* Cubic interpolation, forwards */
SRCTYPE xbuf[6*SRC_CHANNELS];
SRCTYPE *x = &xbuf[3*SRC_CHANNELS];
COPYSRC(xbuf, 0, resampler->X, 0);
COPYSRC(xbuf, 1, resampler->X, 1);
COPYSRC(xbuf, 2, resampler->X, 2);
COPYSRC(xbuf, 3, src, pos);
if (pos+1 < resampler->end) COPYSRC(xbuf, 4, src, pos+1);
if (pos+2 < resampler->end) COPYSRC(xbuf, 5, src, pos+2);
while (todo && x < &xbuf[6*SRC_CHANNELS]) {
HEAVYASSERT(pos < resampler->end);
MIX_CUBIC(+=, x, x, -3, -2, -1, 0);
subpos += dt;
pos += subpos >> 16;
x += (subpos >> 16) * SRC_CHANNELS;
subpos &= 65535;
todo--;
}
x = &src[pos*SRC_CHANNELS];
LOOP4(todo,
HEAVYASSERT(pos < resampler->end);
MIX_CUBIC(+=, x, x, -3, -2, -1, 0);
subpos += dt;
pos += subpos >> 16;
x += (subpos >> 16) * SRC_CHANNELS;
subpos &= 65535;
);
}
diff = pos - diff;
overshot = pos - resampler->end;
if (diff >= 3) {
COPYSRC2(resampler->X, 0, overshot < 3, src, pos-3);
COPYSRC2(resampler->X, 1, overshot < 2, src, pos-2);
COPYSRC2(resampler->X, 2, overshot < 1, src, pos-1);
} else if (diff >= 2) {
COPYSRC(resampler->X, 0, resampler->X, 2);
COPYSRC2(resampler->X, 1, overshot < 2, src, pos-2);
COPYSRC2(resampler->X, 2, overshot < 1, src, pos-1);
} else if (diff >= 1) {
COPYSRC(resampler->X, 0, resampler->X, 1);
COPYSRC(resampler->X, 1, resampler->X, 2);
COPYSRC2(resampler->X, 2, overshot < 1, src, pos-1);
}
}
resampler->pos = pos;
resampler->subpos = subpos;
}
}
return done;
}
void dumb_resample_get_current_sample(DUMB_RESAMPLER *resampler, VOLUME_PARAMETERS, sample_t *dst)
{
int VOLUME_VARIABLES;
SRCTYPE *src;
long pos;
int subpos;
int quality;
SRCTYPE *x;
if (!resampler || resampler->dir == 0) { MIX_ZEROS(=); return; }
ASSERT(resampler->dir == -1 || resampler->dir == 1);
if (process_pickup(resampler)) { MIX_ZEROS(=); return; }
SET_VOLUME_VARIABLES;
if (VOLUMES_ARE_ZERO) { MIX_ZEROS(=); return; }
init_cubic();
quality = dumb_resampling_quality;
if (quality > resampler->max_quality) quality = resampler->max_quality;
else if (quality < resampler->min_quality) quality = resampler->min_quality;
src = resampler->src;
pos = resampler->pos;
subpos = resampler->subpos;
x = resampler->X;
if (resampler->dir < 0) {
HEAVYASSERT(pos >= resampler->start);
if (dumb_resampling_quality <= 0) {
/* Aliasing, backwards */
MIX_ALIAS(=, 1);
} else if (quality <= DUMB_RQ_LINEAR) {
/* Linear interpolation, backwards */
MIX_LINEAR(=, 2, 1);
} else {
/* Cubic interpolation, backwards */
MIX_CUBIC(=, src, x, pos, 2, 1, 0);
}
} else {
HEAVYASSERT(pos < resampler->end);
if (dumb_resampling_quality <= 0) {
/* Aliasing */
MIX_ALIAS(=, 1);
} else if (dumb_resampling_quality <= DUMB_RQ_LINEAR) {
/* Linear interpolation, forwards */
MIX_LINEAR(=, 1, 2);
} else {
/* Cubic interpolation, forwards */
MIX_CUBIC(=, x, src, 0, 1, 2, pos);
}
}
}
#undef MIX_ZEROS
#undef MIX_CUBIC
#undef MIX_LINEAR
#undef MIX_ALIAS
#undef VOLUMES_ARE_ZERO
#undef SET_VOLUME_VARIABLES
#undef VOLUME_VARIABLES
#undef VOLUME_PARAMETERS
#undef SUFFIX3

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/* _______ ____ __ ___ ___
* \ _ \ \ / \ / \ \ / / ' ' '
* | | \ \ | | || | \/ | . .
* | | | | | | || ||\ /| |
* | | | | | | || || \/ | | ' ' '
* | | | | | | || || | | . .
* | |_/ / \ \__// || | |
* /_______/ynamic \____/niversal /__\ /____\usic /| . . ibliotheque
* / \
* / . \
* resample.c - Resampling helpers. / / \ \
* | < / \_
* By Bob and entheh. | \/ /\ /
* \_ / > /
* In order to find a good trade-off between | \ / /
* speed and accuracy in this code, some tests | ' /
* were carried out regarding the behaviour of \__/
* long long ints with gcc. The following code
* was tested:
*
* int a, b, c;
* c = ((long long)a * b) >> 16;
*
* DJGPP GCC Version 3.0.3 generated the following assembly language code for
* the multiplication and scaling, leaving the 32-bit result in EAX.
*
* movl -8(%ebp), %eax ; read one int into EAX
* imull -4(%ebp) ; multiply by the other; result goes in EDX:EAX
* shrdl $16, %edx, %eax ; shift EAX right 16, shifting bits in from EDX
*
* Note that a 32*32->64 multiplication is performed, allowing for high
* accuracy. On the Pentium 2 and above, shrdl takes two cycles (generally),
* so it is a minor concern when four multiplications are being performed
* (the cubic resampler). On the Pentium MMX and earlier, it takes four or
* more cycles, so this method is unsuitable for use in the low-quality
* resamplers.
*
* Since "long long" is a gcc-specific extension, we use LONG_LONG instead,
* defined in dumb.h. We may investigate later what code MSVC generates, but
* if it seems too slow then we suggest you use a good compiler.
*
* FIXME: these comments are somewhat out of date now.
*/
#include <math.h>
#include "dumb.h"
/* Compile with -DHEAVYDEBUG if you want to make sure the pick-up function is
* called when it should be. There will be a considerable performance hit,
* since at least one condition has to be tested for every sample generated.
*/
#ifdef HEAVYDEBUG
#define HEAVYASSERT(cond) ASSERT(cond)
#else
#define HEAVYASSERT(cond)
#endif
/* A global variable for controlling resampling quality wherever a local
* specification doesn't override it. The following values are valid:
*
* 0 - DUMB_RQ_ALIASING - fastest
* 1 - DUMB_RQ_LINEAR
* 2 - DUMB_RQ_CUBIC - nicest
*
* Values outside the range 0-2 will behave the same as the nearest
* value within the range.
*/
int dumb_resampling_quality = DUMB_RQ_CUBIC;
//#define MULSC(a, b) ((int)((LONG_LONG)(a) * (b) >> 16))
//#define MULSC(a, b) ((a) * ((b) >> 2) >> 14)
#define MULSC(a, b) ((int)((LONG_LONG)((a) << 4) * ((b) << 12) >> 32))
#define MULSC16(a, b) ((int)((LONG_LONG)((a) << 12) * ((b) << 12) >> 32))
/* Executes the content 'iterator' times.
* Clobbers the 'iterator' variable.
* The loop is unrolled by four.
*/
#define LOOP4(iterator, CONTENT) \
{ \
if ((iterator) & 2) { \
CONTENT; \
CONTENT; \
} \
if ((iterator) & 1) { \
CONTENT; \
} \
(iterator) >>= 2; \
while (iterator) { \
CONTENT; \
CONTENT; \
CONTENT; \
CONTENT; \
(iterator)--; \
} \
}
#define PASTERAW(a, b) a ## b /* This does not expand macros in b ... */
#define PASTE(a, b) PASTERAW(a, b) /* ... but b is expanded during this substitution. */
#define X PASTE(x.x, SRCBITS)
/* Cubic resampler: look-up tables
*
* a = 1.5*x1 - 1.5*x2 + 0.5*x3 - 0.5*x0
* b = 2*x2 + x0 - 2.5*x1 - 0.5*x3
* c = 0.5*x2 - 0.5*x0
* d = x1
*
* x = a*t*t*t + b*t*t + c*t + d
* = (-0.5*x0 + 1.5*x1 - 1.5*x2 + 0.5*x3) * t*t*t +
* ( 1*x0 - 2.5*x1 + 2 *x2 - 0.5*x3) * t*t +
* (-0.5*x0 + 0.5*x2 ) * t +
* ( 1*x1 )
* = (-0.5*t*t*t + 1 *t*t - 0.5*t ) * x0 +
* ( 1.5*t*t*t - 2.5*t*t + 1) * x1 +
* (-1.5*t*t*t + 2 *t*t + 0.5*t ) * x2 +
* ( 0.5*t*t*t - 0.5*t*t ) * x3
* = A0(t) * x0 + A1(t) * x1 + A2(t) * x2 + A3(t) * x3
*
* A0, A1, A2 and A3 stay within the range [-1,1].
* In the tables, they are scaled with 14 fractional bits.
*
* Turns out we don't need to store A2 and A3; they are symmetrical to A1 and A0.
*
* TODO: A0 and A3 stay very small indeed. Consider different scale/resolution?
*/
static short cubicA0[1025], cubicA1[1025];
static void init_cubic(void)
{
unsigned int t; /* 3*1024*1024*1024 is within range if it's unsigned */
static int done = 0;
if (done) return;
done = 1;
for (t = 0; t < 1025; t++) {
/* int casts to pacify warnings about negating unsigned values */
cubicA0[t] = -(int)( t*t*t >> 17) + (int)( t*t >> 6) - (int)(t << 3);
cubicA1[t] = (int)(3*t*t*t >> 17) - (int)(5*t*t >> 7) + (int)(1 << 14);
}
}
/* Create resamplers for 24-in-32-bit source samples. */
/* #define SUFFIX
* MSVC warns if we try to paste a null SUFFIX, so instead we define
* special macros for the function names that don't bother doing the
* corresponding paste. The more generic definitions are further down.
*/
#define process_pickup PASTE(process_pickup, SUFFIX2)
#define dumb_resample PASTE(PASTE(dumb_resample, SUFFIX2), SUFFIX3)
#define dumb_resample_get_current_sample PASTE(PASTE(dumb_resample_get_current_sample, SUFFIX2), SUFFIX3)
#define SRCTYPE sample_t
#define SRCBITS 24
#define ALIAS(x, vol) MULSC(x, vol)
#define LINEAR(x0, x1) (x0 + MULSC(x1 - x0, subpos))
/*
#define SET_CUBIC_COEFFICIENTS(x0, x1, x2, x3) { \
a = (3 * (x1 - x2) + (x3 - x0)) >> 1; \
b = ((x2 << 2) + (x0 << 1) - (5 * x1 + x3)) >> 1; \
c = (x2 - x0) >> 1; \
}
#define CUBIC(d) MULSC(MULSC(MULSC(MULSC(a, subpos) + b, subpos) + c, subpos) + d, vol)
*/
#define CUBIC(x0, x1, x2, x3) ( \
MULSC(x0, cubicA0[subpos >> 6] << 2) + \
MULSC(x1, cubicA1[subpos >> 6] << 2) + \
MULSC(x2, cubicA1[1 + (subpos >> 6 ^ 1023)] << 2) + \
MULSC(x3, cubicA0[1 + (subpos >> 6 ^ 1023)] << 2))
#define CUBICVOL(x, vol) MULSC(x, vol)
#include "resample.inc"
/* Undefine the simplified macros. */
#undef dumb_resample_get_current_sample
#undef dumb_resample
#undef process_pickup
/* Now define the proper ones that use SUFFIX. */
#define dumb_reset_resampler PASTE(dumb_reset_resampler, SUFFIX)
#define dumb_start_resampler PASTE(dumb_start_resampler, SUFFIX)
#define process_pickup PASTE(PASTE(process_pickup, SUFFIX), SUFFIX2)
#define dumb_resample PASTE(PASTE(PASTE(dumb_resample, SUFFIX), SUFFIX2), SUFFIX3)
#define dumb_resample_get_current_sample PASTE(PASTE(PASTE(dumb_resample_get_current_sample, SUFFIX), SUFFIX2), SUFFIX3)
#define dumb_end_resampler PASTE(dumb_end_resampler, SUFFIX)
/* Create resamplers for 16-bit source samples. */
#define SUFFIX _16
#define SRCTYPE short
#define SRCBITS 16
#define ALIAS(x, vol) (x * vol >> 8)
#define LINEAR(x0, x1) ((x0 << 8) + MULSC16(x1 - x0, subpos))
/*
#define SET_CUBIC_COEFFICIENTS(x0, x1, x2, x3) { \
a = (3 * (x1 - x2) + (x3 - x0)) << 7; \
b = ((x2 << 2) + (x0 << 1) - (5 * x1 + x3)) << 7; \
c = (x2 - x0) << 7; \
}
#define CUBIC(d) MULSC(MULSC(MULSC(MULSC(a, subpos) + b, subpos) + c, subpos) + (d << 8), vol)
*/
#define CUBIC(x0, x1, x2, x3) ( \
x0 * cubicA0[subpos >> 6] + \
x1 * cubicA1[subpos >> 6] + \
x2 * cubicA1[1 + (subpos >> 6 ^ 1023)] + \
x3 * cubicA0[1 + (subpos >> 6 ^ 1023)])
#define CUBICVOL(x, vol) (int)((LONG_LONG)(x) * (vol << 10) >> 32)
#include "resample.inc"
/* Create resamplers for 8-bit source samples. */
#define SUFFIX _8
#define SRCTYPE signed char
#define SRCBITS 8
#define ALIAS(x, vol) (x * vol)
#define LINEAR(x0, x1) ((x0 << 16) + (x1 - x0) * subpos)
/*
#define SET_CUBIC_COEFFICIENTS(x0, x1, x2, x3) { \
a = 3 * (x1 - x2) + (x3 - x0); \
b = ((x2 << 2) + (x0 << 1) - (5 * x1 + x3)) << 15; \
c = (x2 - x0) << 15; \
}
#define CUBIC(d) MULSC(MULSC(MULSC((a * subpos >> 1) + b, subpos) + c, subpos) + (d << 16), vol)
*/
#define CUBIC(x0, x1, x2, x3) (( \
x0 * cubicA0[subpos >> 6] + \
x1 * cubicA1[subpos >> 6] + \
x2 * cubicA1[1 + (subpos >> 6 ^ 1023)] + \
x3 * cubicA0[1 + (subpos >> 6 ^ 1023)]) << 6)
#define CUBICVOL(x, vol) (int)((LONG_LONG)(x) * (vol << 12) >> 32)
#include "resample.inc"
#undef dumb_reset_resampler
#undef dumb_start_resampler
#undef process_pickup
#undef dumb_resample
#undef dumb_resample_get_current_sample
#undef dumb_end_resampler
void dumb_reset_resampler_n(int n, DUMB_RESAMPLER *resampler, void *src, int src_channels, long pos, long start, long end)
{
if (n == 8)
dumb_reset_resampler_8(resampler, src, src_channels, pos, start, end);
else if (n == 16)
dumb_reset_resampler_16(resampler, src, src_channels, pos, start, end);
else
dumb_reset_resampler(resampler, src, src_channels, pos, start, end);
}
DUMB_RESAMPLER *dumb_start_resampler_n(int n, void *src, int src_channels, long pos, long start, long end)
{
if (n == 8)
return dumb_start_resampler_8(src, src_channels, pos, start, end);
else if (n == 16)
return dumb_start_resampler_16(src, src_channels, pos, start, end);
else
return dumb_start_resampler(src, src_channels, pos, start, end);
}
long dumb_resample_n_1_1(int n, DUMB_RESAMPLER *resampler, sample_t *dst, long dst_size, float volume, float delta)
{
if (n == 8)
return dumb_resample_8_1_1(resampler, dst, dst_size, volume, delta);
else if (n == 16)
return dumb_resample_16_1_1(resampler, dst, dst_size, volume, delta);
else
return dumb_resample_1_1(resampler, dst, dst_size, volume, delta);
}
long dumb_resample_n_1_2(int n, DUMB_RESAMPLER *resampler, sample_t *dst, long dst_size, float volume_left, float volume_right, float delta)
{
if (n == 8)
return dumb_resample_8_1_2(resampler, dst, dst_size, volume_left, volume_right, delta);
else if (n == 16)
return dumb_resample_16_1_2(resampler, dst, dst_size, volume_left, volume_right, delta);
else
return dumb_resample_1_2(resampler, dst, dst_size, volume_left, volume_right, delta);
}
long dumb_resample_n_2_1(int n, DUMB_RESAMPLER *resampler, sample_t *dst, long dst_size, float volume_left, float volume_right, float delta)
{
if (n == 8)
return dumb_resample_8_2_1(resampler, dst, dst_size, volume_left, volume_right, delta);
else if (n == 16)
return dumb_resample_16_2_1(resampler, dst, dst_size, volume_left, volume_right, delta);
else
return dumb_resample_2_1(resampler, dst, dst_size, volume_left, volume_right, delta);
}
long dumb_resample_n_2_2(int n, DUMB_RESAMPLER *resampler, sample_t *dst, long dst_size, float volume_left, float volume_right, float delta)
{
if (n == 8)
return dumb_resample_8_2_2(resampler, dst, dst_size, volume_left, volume_right, delta);
else if (n == 16)
return dumb_resample_16_2_2(resampler, dst, dst_size, volume_left, volume_right, delta);
else
return dumb_resample_2_2(resampler, dst, dst_size, volume_left, volume_right, delta);
}
void dumb_resample_get_current_sample_n_1_1(int n, DUMB_RESAMPLER *resampler, float volume, sample_t *dst)
{
if (n == 8)
dumb_resample_get_current_sample_8_1_1(resampler, volume, dst);
else if (n == 16)
dumb_resample_get_current_sample_16_1_1(resampler, volume, dst);
else
dumb_resample_get_current_sample_1_1(resampler, volume, dst);
}
void dumb_resample_get_current_sample_n_1_2(int n, DUMB_RESAMPLER *resampler, float volume_left, float volume_right, sample_t *dst)
{
if (n == 8)
dumb_resample_get_current_sample_8_1_2(resampler, volume_left, volume_right, dst);
else if (n == 16)
dumb_resample_get_current_sample_16_1_2(resampler, volume_left, volume_right, dst);
else
dumb_resample_get_current_sample_1_2(resampler, volume_left, volume_right, dst);
}
void dumb_resample_get_current_sample_n_2_1(int n, DUMB_RESAMPLER *resampler, float volume_left, float volume_right, sample_t *dst)
{
if (n == 8)
dumb_resample_get_current_sample_8_2_1(resampler, volume_left, volume_right, dst);
else if (n == 16)
dumb_resample_get_current_sample_16_2_1(resampler, volume_left, volume_right, dst);
else
dumb_resample_get_current_sample_2_1(resampler, volume_left, volume_right, dst);
}
void dumb_resample_get_current_sample_n_2_2(int n, DUMB_RESAMPLER *resampler, float volume_left, float volume_right, sample_t *dst)
{
if (n == 8)
dumb_resample_get_current_sample_8_2_2(resampler, volume_left, volume_right, dst);
else if (n == 16)
dumb_resample_get_current_sample_16_2_2(resampler, volume_left, volume_right, dst);
else
dumb_resample_get_current_sample_2_2(resampler, volume_left, volume_right, dst);
}
void dumb_end_resampler_n(int n, DUMB_RESAMPLER *resampler)
{
if (n == 8)
dumb_end_resampler_8(resampler);
else if (n == 16)
dumb_end_resampler_16(resampler);
else
dumb_end_resampler(resampler);
}

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/* _______ ____ __ ___ ___
* \ _ \ \ / \ / \ \ / / ' ' '
* | | \ \ | | || | \/ | . .
* | | | | | | || ||\ /| |
* | | | | | | || || \/ | | ' ' '
* | | | | | | || || | | . .
* | |_/ / \ \__// || | |
* /_______/ynamic \____/niversal /__\ /____\usic /| . . ibliotheque
* / \
* / . \
* resample.inc - Resampling helper template. / / \ \
* | < / \_
* By Bob and entheh. | \/ /\ /
* \_ / > /
* In order to find a good trade-off between | \ / /
* speed and accuracy in this code, some tests | ' /
* were carried out regarding the behaviour of \__/
* long long ints with gcc. The following code
* was tested:
*
* int a, b, c;
* c = ((long long)a * b) >> 16;
*
* DJGPP GCC Version 3.0.3 generated the following assembly language code for
* the multiplication and scaling, leaving the 32-bit result in EAX.
*
* movl -8(%ebp), %eax ; read one int into EAX
* imull -4(%ebp) ; multiply by the other; result goes in EDX:EAX
* shrdl $16, %edx, %eax ; shift EAX right 16, shifting bits in from EDX
*
* Note that a 32*32->64 multiplication is performed, allowing for high
* accuracy. On the Pentium 2 and above, shrdl takes two cycles (generally),
* so it is a minor concern when four multiplications are being performed
* (the cubic resampler). On the Pentium MMX and earlier, it takes four or
* more cycles, so this method is unsuitable for use in the low-quality
* resamplers.
*
* Since "long long" is a gcc-specific extension, we use LONG_LONG instead,
* defined in dumb.h. We may investigate later what code MSVC generates, but
* if it seems too slow then we suggest you use a good compiler.
*
* FIXME: these comments are somewhat out of date now.
*/
void dumb_reset_resampler(DUMB_RESAMPLER *resampler, SRCTYPE *src, int src_channels, long pos, long start, long end)
{
int i;
resampler->src = src;
resampler->pos = pos;
resampler->subpos = 0;
resampler->start = start;
resampler->end = end;
resampler->dir = 1;
resampler->pickup = NULL;
resampler->pickup_data = NULL;
resampler->min_quality = 0;
resampler->max_quality = DUMB_RQ_N_LEVELS - 1;
for (i = 0; i < src_channels*3; i++) resampler->X[i] = 0;
resampler->overshot = -1;
}
DUMB_RESAMPLER *dumb_start_resampler(SRCTYPE *src, int src_channels, long pos, long start, long end)
{
DUMB_RESAMPLER *resampler = malloc(sizeof(*resampler));
if (!resampler) return NULL;
dumb_reset_resampler(resampler, src, src_channels, pos, start, end);
return resampler;
}
/* Create mono source resampler. */
#define SUFFIX2 _1
#define SRC_CHANNELS 1
#define DIVIDE_BY_SRC_CHANNELS(x) (x)
#define COPYSRC(dstarray, dstindex, srcarray, srcindex) (dstarray)[dstindex] = (srcarray)[srcindex]
#define COPYSRC2(dstarray, dstindex, condition, srcarray, srcindex) (dstarray)[dstindex] = condition ? (srcarray)[srcindex] : 0
#define MONO_DEST_VOLUME_PARAMETERS float volume
#define MONO_DEST_VOLUME_VARIABLES vol
#define MONO_DEST_VOLUME_ZEROS 0
#define SET_MONO_DEST_VOLUME_VARIABLES vol = (int)floor(volume * 65536.0 + 0.5)
#define MONO_DEST_VOLUMES_ARE_ZERO (vol == 0)
#define MONO_DEST_MIX_ALIAS(op, offset) *dst++ op ALIAS(x[offset], vol)
#define STEREO_DEST_MIX_ALIAS(op, offset) { \
int xm = x[offset]; \
*dst++ op ALIAS(xm, lvol); \
*dst++ op ALIAS(xm, rvol); \
}
#define MONO_DEST_MIX_LINEAR(op, o0, o1) *dst++ op MULSC(LINEAR(x[o0], x[o1]), vol)
#define STEREO_DEST_MIX_LINEAR(op, o0, o1) { \
int xm = LINEAR(x[o0], x[o1]); \
*dst++ op MULSC(xm, lvol); \
*dst++ op MULSC(xm, rvol); \
}
#define MONO_DEST_MIX_CUBIC(op, x0, x3, o0, o1, o2, o3) *dst++ op CUBICVOL(CUBIC(x0[o0], x[o1], x[o2], x3[o3]), vol)
#define STEREO_DEST_MIX_CUBIC(op, x0, x3, o0, o1, o2, o3) { \
int xm = CUBIC(x0[o0], x[o1], x[o2], x3[o3]); \
*dst++ op CUBICVOL(xm, lvol); \
*dst++ op CUBICVOL(xm, rvol); \
}
#include "resamp2.inc"
/* Create stereo source resampler. */
#define SUFFIX2 _2
#define SRC_CHANNELS 2
#define DIVIDE_BY_SRC_CHANNELS(x) ((x) >> 1)
#define COPYSRC(dstarray, dstindex, srcarray, srcindex) { \
(dstarray)[(dstindex)*2] = (srcarray)[(srcindex)*2]; \
(dstarray)[(dstindex)*2+1] = (srcarray)[(srcindex)*2+1]; \
}
#define COPYSRC2(dstarray, dstindex, condition, srcarray, srcindex) { \
if (condition) { \
(dstarray)[(dstindex)*2] = (srcarray)[(srcindex)*2]; \
(dstarray)[(dstindex)*2+1] = (srcarray)[(srcindex)*2+1]; \
} else { \
(dstarray)[(dstindex)*2] = 0; \
(dstarray)[(dstindex)*2+1] = 0; \
} \
}
#define MONO_DEST_VOLUME_PARAMETERS float volume_left, float volume_right
#define MONO_DEST_VOLUME_VARIABLES lvol, rvol
#define MONO_DEST_VOLUME_ZEROS 0, 0
#define SET_MONO_DEST_VOLUME_VARIABLES { \
lvol = (int)floor(volume_left * 65536.0 + 0.5); \
rvol = (int)floor(volume_right * 65536.0 + 0.5); \
}
#define MONO_DEST_VOLUMES_ARE_ZERO (lvol == 0 && rvol == 0)
#define MONO_DEST_MIX_ALIAS(op, offset) *dst++ op ALIAS(x[(offset)*2], lvol) + ALIAS(x[(offset)*2+1], rvol)
#define STEREO_DEST_MIX_ALIAS(op, offset) { \
*dst++ op ALIAS(x[(offset)*2], lvol); \
*dst++ op ALIAS(x[(offset)*2+1], rvol); \
}
#define MONO_DEST_MIX_LINEAR(op, o0, o1) *dst++ op MULSC(LINEAR(x[(o0)*2], x[(o1)*2]), lvol) + MULSC(LINEAR(x[(o0)*2+1], x[(o1)*2+1]), rvol)
#define STEREO_DEST_MIX_LINEAR(op, o0, o1) { \
*dst++ op MULSC(LINEAR(x[(o0)*2], x[(o1)*2]), lvol); \
*dst++ op MULSC(LINEAR(x[(o0)*2+1], x[(o1)*2+1]), rvol); \
}
#define MONO_DEST_MIX_CUBIC(op, x0, x3, o0, o1, o2, o3) *dst++ op \
CUBICVOL(CUBIC(x0[(o0)*2], x[(o1)*2], x[(o2)*2], x3[(o3)*2]), lvol) + \
CUBICVOL(CUBIC(x0[(o0)*2+1], x[(o1)*2+1], x[(o2)*2+1], x3[(o3)*2+1]), rvol)
#define STEREO_DEST_MIX_CUBIC(op, x0, x3, o0, o1, o2, o3) { \
*dst++ op CUBICVOL(CUBIC(x0[(o0)*2], x[(o1)*2], x[(o2)*2], x3[(o3)*2]), lvol); \
*dst++ op CUBICVOL(CUBIC(x0[(o0)*2+1], x[(o1)*2+1], x[(o2)*2+1], x3[(o3)*2+1]), rvol); \
}
#include "resamp2.inc"
void dumb_end_resampler(DUMB_RESAMPLER *resampler)
{
if (resampler)
free(resampler);
}
#undef CUBICVOL
#undef CUBIC
#undef LINEAR
#undef ALIAS
#undef SRCBITS
#undef SRCTYPE
#undef SUFFIX

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/* _______ ____ __ ___ ___
* \ _ \ \ / \ / \ \ / / ' ' '
* | | \ \ | | || | \/ | . .
* | | | | | | || ||\ /| |
* | | | | | | || || \/ | | ' ' '
* | | | | | | || || | | . .
* | |_/ / \ \__// || | |
* /_______/ynamic \____/niversal /__\ /____\usic /| . . ibliotheque
* / \
* / . \
* sampbuf.c - Helper for allocating sample / / \ \
* buffers. | < / \_
* | \/ /\ /
* By entheh. \_ / > /
* | \ / /
* | ' /
* \__/
*/
#include <stdlib.h>
#include "dumb.h"
/* DEPRECATED */
sample_t **create_sample_buffer(int n_channels, long length)
{
int i;
sample_t **samples = malloc(n_channels * sizeof(*samples));
if (!samples) return NULL;
samples[0] = malloc(n_channels * length * sizeof(*samples[0]));
if (!samples[0]) {
free(samples);
return NULL;
}
for (i = 1; i < n_channels; i++) samples[i] = samples[i-1] + length;
return samples;
}
sample_t **allocate_sample_buffer(int n_channels, long length)
{
int i;
sample_t **samples = malloc(((n_channels + 1) >> 1) * sizeof(*samples));
if (!samples) return NULL;
samples[0] = malloc(n_channels * length * sizeof(*samples[0]));
if (!samples[0]) {
free(samples);
return NULL;
}
for (i = 1; i < (n_channels + 1) >> 1; i++) samples[i] = samples[i-1] + length*2;
return samples;
}
void destroy_sample_buffer(sample_t **samples)
{
if (samples) {
free(samples[0]);
free(samples);
}
}

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/* _______ ____ __ ___ ___
* \ _ \ \ / \ / \ \ / / ' ' '
* | | \ \ | | || | \/ | . .
* | | | | | | || ||\ /| |
* | | | | | | || || \/ | | ' ' '
* | | | | | | || || | | . .
* | |_/ / \ \__// || | |
* /_______/ynamic \____/niversal /__\ /____\usic /| . . ibliotheque
* / \
* / . \
* silence.c - Silencing helper. / / \ \
* | < / \_
* By entheh. | \/ /\ /
* \_ / > /
* | \ / /
* | ' /
* \__/
*/
#include <string.h>
#include "dumb.h"
void dumb_silence(sample_t *samples, long length)
{
memset(samples, 0, length * sizeof(*samples));
}

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/* _______ ____ __ ___ ___
* \ _ \ \ / \ / \ \ / / ' ' '
* | | \ \ | | || | \/ | . .
* | | | | | | || ||\ /| |
* | | | | | | || || \/ | | ' ' '
* | | | | | | || || | | . .
* | |_/ / \ \__// || | |
* /_______/ynamic \____/niversal /__\ /____\usic /| . . ibliotheque
* / \
* / . \
* stdfile.c - stdio file input module. / / \ \
* | < / \_
* By entheh. | \/ /\ /
* \_ / > /
* | \ / /
* | ' /
* \__/
*/
#include <stdio.h>
#include "dumb.h"
static void *dumb_stdfile_open(const char *filename)
{
return fopen(filename, "rb");
}
static int dumb_stdfile_skip(void *f, long n)
{
return fseek(f, n, SEEK_CUR);
}
static int dumb_stdfile_getc(void *f)
{
return fgetc(f);
}
static long dumb_stdfile_getnc(char *ptr, long n, void *f)
{
return fread(ptr, 1, n, f);
}
static void dumb_stdfile_close(void *f)
{
fclose(f);
}
static DUMBFILE_SYSTEM stdfile_dfs = {
&dumb_stdfile_open,
&dumb_stdfile_skip,
&dumb_stdfile_getc,
&dumb_stdfile_getnc,
&dumb_stdfile_close
};
void dumb_register_stdfiles(void)
{
register_dumbfile_system(&stdfile_dfs);
}
static DUMBFILE_SYSTEM stdfile_dfs_leave_open = {
NULL,
&dumb_stdfile_skip,
&dumb_stdfile_getc,
&dumb_stdfile_getnc,
NULL
};
DUMBFILE *dumbfile_open_stdfile(FILE *p)
{
DUMBFILE *d = dumbfile_open_ex(p, &stdfile_dfs_leave_open);
return d;
}

42
Frameworks/Dumb/dumb/src/it/itload.c Normal file
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/* _______ ____ __ ___ ___
* \ _ \ \ / \ / \ \ / / ' ' '
* | | \ \ | | || | \/ | . .
* | | | | | | || ||\ /| |
* | | | | | | || || \/ | | ' ' '
* | | | | | | || || | | . .
* | |_/ / \ \__// || | |
* /_______/ynamic \____/niversal /__\ /____\usic /| . . ibliotheque
* / \
* / . \
* itload.c - Code to read an Impulse Tracker / / \ \
* file, opening and closing it for | < / \_
* you. | \/ /\ /
* \_ / > /
* By entheh. Don't worry Bob, you're credited | \ / /
* in itread.c! | ' /
* \__/
*/
#include "dumb.h"
#include "internal/it.h"
/* dumb_load_it_quick(): loads an IT file into a DUH struct, returning a
* pointer to the DUH struct. When you have finished with it, you must pass
* the pointer to unload_duh() so that the memory can be freed.
*/
DUH *dumb_load_it_quick(const char *filename)
{
DUH *duh;
DUMBFILE *f = dumbfile_open(filename);
if (!f)
return NULL;
duh = dumb_read_it_quick(f);
dumbfile_close(f);
return duh;
}

29
Frameworks/Dumb/dumb/src/it/itload2.c Normal file
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/* _______ ____ __ ___ ___
* \ _ \ \ / \ / \ \ / / ' ' '
* | | \ \ | | || | \/ | . .
* | | | | | | || ||\ /| |
* | | | | | | || || \/ | | ' ' '
* | | | | | | || || | | . .
* | |_/ / \ \__// || | |
* /_______/ynamic \____/niversal /__\ /____\usic /| . . ibliotheque
* / \
* / . \
* itload2.c - Function to read an Impulse Tracker / / \ \
* file, opening and closing it for | < / \_
* you, and do an initial run-through. | \/ /\ /
* \_ / > /
* Split off from itload.c by entheh. | \ / /
* | ' /
* \__/
*/
#include "dumb.h"
DUH *dumb_load_it(const char *filename)
{
DUH *duh = dumb_load_it_quick(filename);
dumb_it_do_initial_runthrough(duh);
return duh;
}

247
Frameworks/Dumb/dumb/src/it/itmisc.c Normal file
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/* _______ ____ __ ___ ___
* \ _ \ \ / \ / \ \ / / ' ' '
* | | \ \ | | || | \/ | . .
* | | | | | | || ||\ /| |
* | | | | | | || || \/ | | ' ' '
* | | | | | | || || | | . .
* | |_/ / \ \__// || | |
* /_______/ynamic \____/niversal /__\ /____\usic /| . . ibliotheque
* / \
* / . \
* itmisc.c - Miscellaneous functions relating / / \ \
* to module files. | < / \_
* | \/ /\ /
* By entheh. \_ / > /
* | \ / /
* | ' /
* \__/
*/
#include "dumb.h"
#include "internal/it.h"
DUMB_IT_SIGDATA *duh_get_it_sigdata(DUH *duh)
{
return duh_get_raw_sigdata(duh, 0, SIGTYPE_IT);
}
const unsigned char *dumb_it_sd_get_song_message(DUMB_IT_SIGDATA *sd)
{
return sd ? sd->song_message : NULL;
}
int dumb_it_sd_get_n_orders(DUMB_IT_SIGDATA *sd)
{
return sd ? sd->n_orders : 0;
}
int dumb_it_sd_get_n_samples(DUMB_IT_SIGDATA *sd)
{
return sd ? sd->n_samples : 0;
}
int dumb_it_sd_get_n_instruments(DUMB_IT_SIGDATA *sd)
{
return sd ? sd->n_instruments : 0;
}
const unsigned char *dumb_it_sd_get_sample_name(DUMB_IT_SIGDATA *sd, int i)
{
ASSERT(sd && sd->sample && i >= 0 && i < sd->n_samples);
return sd->sample[i].name;
}
const unsigned char *dumb_it_sd_get_sample_filename(DUMB_IT_SIGDATA *sd, int i)
{
ASSERT(sd && sd->sample && i >= 0 && i < sd->n_samples);
return sd->sample[i].filename;
}
const unsigned char *dumb_it_sd_get_instrument_name(DUMB_IT_SIGDATA *sd, int i)
{
ASSERT(sd && sd->instrument && i >= 0 && i < sd->n_instruments);
return sd->instrument[i].name;
}
const unsigned char *dumb_it_sd_get_instrument_filename(DUMB_IT_SIGDATA *sd, int i)
{
ASSERT(sd && sd->instrument && i >= 0 && i < sd->n_instruments);
return sd->instrument[i].filename;
}
int dumb_it_sd_get_initial_global_volume(DUMB_IT_SIGDATA *sd)
{
return sd ? sd->global_volume : 0;
}
void dumb_it_sd_set_initial_global_volume(DUMB_IT_SIGDATA *sd, int gv)
{
if (sd) sd->global_volume = gv;
}
int dumb_it_sd_get_mixing_volume(DUMB_IT_SIGDATA *sd)
{
return sd ? sd->mixing_volume : 0;
}
void dumb_it_sd_set_mixing_volume(DUMB_IT_SIGDATA *sd, int mv)
{
if (sd) sd->mixing_volume = mv;
}
int dumb_it_sd_get_initial_speed(DUMB_IT_SIGDATA *sd)
{
return sd ? sd->speed : 0;
}
void dumb_it_sd_set_initial_speed(DUMB_IT_SIGDATA *sd, int speed)
{
if (sd) sd->speed = speed;
}
int dumb_it_sd_get_initial_tempo(DUMB_IT_SIGDATA *sd)
{
return sd ? sd->tempo : 0;
}
void dumb_it_sd_set_initial_tempo(DUMB_IT_SIGDATA *sd, int tempo)
{
if (sd) sd->tempo = tempo;
}
int dumb_it_sd_get_initial_channel_volume(DUMB_IT_SIGDATA *sd, int channel)
{
ASSERT(channel >= 0 && channel < DUMB_IT_N_CHANNELS);
return sd ? sd->channel_volume[channel] : 0;
}
void dumb_it_sd_set_initial_channel_volume(DUMB_IT_SIGDATA *sd, int channel, int volume)
{
ASSERT(channel >= 0 && channel < DUMB_IT_N_CHANNELS);
if (sd) sd->channel_volume[channel] = volume;
}
int dumb_it_sr_get_current_order(DUMB_IT_SIGRENDERER *sr)
{
return sr ? sr->order : -1;
}
int dumb_it_sr_get_current_row(DUMB_IT_SIGRENDERER *sr)
{
return sr ? sr->row : -1;
}
int dumb_it_sr_get_global_volume(DUMB_IT_SIGRENDERER *sr)
{
return sr ? sr->globalvolume : 0;
}
void dumb_it_sr_set_global_volume(DUMB_IT_SIGRENDERER *sr, int gv)
{
if (sr) sr->globalvolume = gv;
}
int dumb_it_sr_get_tempo(DUMB_IT_SIGRENDERER *sr)
{
return sr ? sr->tempo : 0;
}
void dumb_it_sr_set_tempo(DUMB_IT_SIGRENDERER *sr, int tempo)
{
if (sr) sr->tempo = tempo;
}
int dumb_it_sr_get_speed(DUMB_IT_SIGRENDERER *sr)
{
return sr ? sr->speed : 0;
}
void dumb_it_sr_set_speed(DUMB_IT_SIGRENDERER *sr, int speed)
{
if (sr) sr->speed = speed;
}
int dumb_it_sr_get_channel_volume(DUMB_IT_SIGRENDERER *sr, int channel)
{
return sr ? sr->channel[channel].channelvolume : 0;
}
void dumb_it_sr_set_channel_volume(DUMB_IT_SIGRENDERER *sr, int channel, int volume)
{
if (sr) sr->channel[channel].channelvolume = volume;
}
void dumb_it_sr_set_channel_muted(DUMB_IT_SIGRENDERER *sr, int channel, int muted)
{
if (sr) {
if (muted)
sr->channel[channel].flags |= IT_CHANNEL_MUTED;
else
sr->channel[channel].flags &= ~IT_CHANNEL_MUTED;
}
}
int dumb_it_sr_get_channel_muted(DUMB_IT_SIGRENDERER *sr, int channel)
{
return sr ? (sr->channel[channel].flags & IT_CHANNEL_MUTED) != 0 : 0;
}

63
Frameworks/Dumb/dumb/src/it/itorder.c Normal file
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/* _______ ____ __ ___ ___
* \ _ \ \ / \ / \ \ / / ' ' '
* | | \ \ | | || | \/ | . .
* | | | | | | || ||\ /| |
* | | | | | | || || \/ | | ' ' '
* | | | | | | || || | | . .
* | |_/ / \ \__// || | |
* /_______/ynamic \____/niversal /__\ /____\usic /| . . ibliotheque
* / \
* / . \
* itorder.c - Code to fix invalid patterns in / / \ \
* the pattern table. | < / \_
* | \/ /\ /
* By Julien Cugniere. \_ / > /
* | \ / /
* | ' /
* \__/
*/
#include <stdlib.h>
#include "dumb.h"
#include "internal/it.h"
/* This function ensures that any pattern mentioned in the order table but
* not present in the pattern table is treated as an empty 64 rows pattern.
* This is done by adding such a dummy pattern at the end of the pattern
* table, and redirect invalid orders to it.
* Patterns 254 and 255 are left untouched, unless the signal is an XM.
*/
int _dumb_it_fix_invalid_orders(DUMB_IT_SIGDATA *sigdata)
{
int i;
int found_some = 0;
int first_invalid = sigdata->n_patterns;
int last_invalid = (sigdata->flags & IT_WAS_AN_XM) ? 255 : 253;
for (i = 0; i < sigdata->n_orders; i++) {
if (sigdata->order[i] >= first_invalid && sigdata->order[i] <= last_invalid) {
sigdata->order[i] = sigdata->n_patterns;
found_some = 1;
}
}
if (found_some) {
IT_PATTERN *new_pattern = realloc(sigdata->pattern, sizeof(*sigdata->pattern) * (sigdata->n_patterns + 1));
if (!new_pattern)
return -1;
new_pattern[sigdata->n_patterns].n_rows = 64;
new_pattern[sigdata->n_patterns].n_entries = 0;
new_pattern[sigdata->n_patterns].entry = NULL;
sigdata->pattern = new_pattern;
sigdata->n_patterns++;
}
return 0;
}

1202
Frameworks/Dumb/dumb/src/it/itread.c Normal file
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29
Frameworks/Dumb/dumb/src/it/itread2.c Normal file
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/* _______ ____ __ ___ ___
* \ _ \ \ / \ / \ \ / / ' ' '
* | | \ \ | | || | \/ | . .
* | | | | | | || ||\ /| |
* | | | | | | || || \/ | | ' ' '
* | | | | | | || || | | . .
* | |_/ / \ \__// || | |
* /_______/ynamic \____/niversal /__\ /____\usic /| . . ibliotheque
* / \
* / . \
* itread2.c - Function to read an Impulse Tracker / / \ \
* module from an open file and do an | < / \_
* initial run-through. | \/ /\ /
* \_ / > /
* Split off from itread.c by entheh. | \ / /
* | ' /
* \__/
*/
#include "dumb.h"
DUH *dumb_read_it(DUMBFILE *f)
{
DUH *duh = dumb_read_it_quick(f);
dumb_it_do_initial_runthrough(duh);
return duh;
}

3739
Frameworks/Dumb/dumb/src/it/itrender.c Normal file
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72
Frameworks/Dumb/dumb/src/it/itunload.c Normal file
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/* _______ ____ __ ___ ___
* \ _ \ \ / \ / \ \ / / ' ' '
* | | \ \ | | || | \/ | . .
* | | | | | | || ||\ /| |
* | | | | | | || || \/ | | ' ' '
* | | | | | | || || | | . .
* | |_/ / \ \__// || | |
* /_______/ynamic \____/niversal /__\ /____\usic /| . . ibliotheque
* / \
* / . \
* itunload.c - Code to free an Impulse Tracker / / \ \
* module from memory. | < / \_
* | \/ /\ /
* By entheh. \_ / > /
* | \ / /
* | ' /
* \__/
*/
#include <stdlib.h>
#include "dumb.h"
#include "internal/it.h"
void _dumb_it_unload_sigdata(sigdata_t *vsigdata)
{
if (vsigdata) {
DUMB_IT_SIGDATA *sigdata = vsigdata;
int n;
if (sigdata->song_message)
free(sigdata->song_message);
if (sigdata->order)
free(sigdata->order);
if (sigdata->instrument)
free(sigdata->instrument);
if (sigdata->sample) {
for (n = 0; n < sigdata->n_samples; n++)
if (sigdata->sample[n].data)
free(sigdata->sample[n].data);
free(sigdata->sample);
}
if (sigdata->pattern) {
for (n = 0; n < sigdata->n_patterns; n++)
if (sigdata->pattern[n].entry)
free(sigdata->pattern[n].entry);
free(sigdata->pattern);
}
if (sigdata->midi)
free(sigdata->midi);
{
IT_CHECKPOINT *checkpoint = sigdata->checkpoint;
while (checkpoint) {
IT_CHECKPOINT *next = checkpoint->next;
_dumb_it_end_sigrenderer(checkpoint->sigrenderer);
free(checkpoint);
checkpoint = next;
}
}
free(vsigdata);
}
}

42
Frameworks/Dumb/dumb/src/it/loadmod.c Normal file
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/* _______ ____ __ ___ ___
* \ _ \ \ / \ / \ \ / / ' ' '
* | | \ \ | | || | \/ | . .
* | | | | | | || ||\ /| |
* | | | | | | || || \/ | | ' ' '
* | | | | | | || || | | . .
* | |_/ / \ \__// || | |
* /_______/ynamic \____/niversal /__\ /____\usic /| . . ibliotheque
* / \
* / . \
* loadmod.c - Code to read a good old-fashioned / / \ \
* Amiga module file, opening and | < / \_
* closing it for you. | \/ /\ /
* \_ / > /
* By entheh. | \ / /
* | ' /
* \__/
*/
#include "dumb.h"
#include "internal/it.h"
/* dumb_load_mod_quick(): loads a MOD file into a DUH struct, returning a
* pointer to the DUH struct. When you have finished with it, you must
* pass the pointer to unload_duh() so that the memory can be freed.
*/
DUH *dumb_load_mod_quick(const char *filename)
{
DUH *duh;
DUMBFILE *f = dumbfile_open(filename);
if (!f)
return NULL;
duh = dumb_read_mod_quick(f);
dumbfile_close(f);
return duh;
}

29
Frameworks/Dumb/dumb/src/it/loadmod2.c Normal file
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/* _______ ____ __ ___ ___
* \ _ \ \ / \ / \ \ / / ' ' '
* | | \ \ | | || | \/ | . .
* | | | | | | || ||\ /| |
* | | | | | | || || \/ | | ' ' '
* | | | | | | || || | | . .
* | |_/ / \ \__// || | |
* /_______/ynamic \____/niversal /__\ /____\usic /| . . ibliotheque
* / \
* / . \
* loadmod2.c - Function to read a good old- / / \ \
* fashioned Amiga module file, | < / \_
* opening and closing it for you, | \/ /\ /
* and do an initial run-through. \_ / > /
* | \ / /
* Split off from loadmod.c by entheh. | ' /
* \__/
*/
#include "dumb.h"
DUH *dumb_load_mod(const char *filename)
{
DUH *duh = dumb_load_mod_quick(filename);
dumb_it_do_initial_runthrough(duh);
return duh;
}

42
Frameworks/Dumb/dumb/src/it/loads3m.c Normal file
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/* _______ ____ __ ___ ___
* \ _ \ \ / \ / \ \ / / ' ' '
* | | \ \ | | || | \/ | . .
* | | | | | | || ||\ /| |
* | | | | | | || || \/ | | ' ' '
* | | | | | | || || | | . .
* | |_/ / \ \__// || | |
* /_______/ynamic \____/niversal /__\ /____\usic /| . . ibliotheque
* / \
* / . \
* loads3m.c - Code to read a ScreamTracker 3 / / \ \
* file, opening and closing it for | < / \_
* you. | \/ /\ /
* \_ / > /
* By entheh. | \ / /
* | ' /
* \__/
*/
#include "dumb.h"
#include "internal/it.h"
/* dumb_load_s3m_quick(): loads an S3M file into a DUH struct, returning
* a pointer to the DUH struct. When you have finished with it, you must
* pass the pointer to unload_duh() so that the memory can be freed.
*/
DUH *dumb_load_s3m_quick(const char *filename)
{
DUH *duh;
DUMBFILE *f = dumbfile_open(filename);
if (!f)
return NULL;
duh = dumb_read_s3m_quick(f);
dumbfile_close(f);
return duh;
}

29
Frameworks/Dumb/dumb/src/it/loads3m2.c Normal file
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/* _______ ____ __ ___ ___
* \ _ \ \ / \ / \ \ / / ' ' '
* | | \ \ | | || | \/ | . .
* | | | | | | || ||\ /| |
* | | | | | | || || \/ | | ' ' '
* | | | | | | || || | | . .
* | |_/ / \ \__// || | |
* /_______/ynamic \____/niversal /__\ /____\usic /| . . ibliotheque
* / \
* / . \
* loads3m2.c - Function to read a ScreamTracker 3 / / \ \
* file, opening and closing it for | < / \_
* you, and do an initial run-through. | \/ /\ /
* \_ / > /
* Split off from loads3m.c by entheh. | \ / /
* | ' /
* \__/
*/
#include "dumb.h"
DUH *dumb_load_s3m(const char *filename)
{
DUH *duh = dumb_load_s3m_quick(filename);
dumb_it_do_initial_runthrough(duh);
return duh;
}

42
Frameworks/Dumb/dumb/src/it/loadxm.c Normal file
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/* _______ ____ __ ___ ___
* \ _ \ \ / \ / \ \ / / ' ' '
* | | \ \ | | || | \/ | . .
* | | | | | | || ||\ /| |
* | | | | | | || || \/ | | ' ' '
* | | | | | | || || | | . .
* | |_/ / \ \__// || | |
* /_______/ynamic \____/niversal /__\ /____\usic /| . . ibliotheque
* / \
* / . \
* loadxm.c - Code to read a Fast Tracker II / / \ \
* file, opening and closing it for | < / \_
* you. | \/ /\ /
* \_ / > /
* By entheh. | \ / /
* | ' /
* \__/
*/
#include "dumb.h"
#include "internal/it.h"
/* dumb_load_xm_quick(): loads an XM file into a DUH struct, returning a
* pointer to the DUH struct. When you have finished with it, you must
* pass the pointer to unload_duh() so that the memory can be freed.
*/
DUH *dumb_load_xm_quick(const char *filename)
{
DUH *duh;
DUMBFILE *f = dumbfile_open(filename);
if (!f)
return NULL;
duh = dumb_read_xm_quick(f);
dumbfile_close(f);
return duh;
}

29
Frameworks/Dumb/dumb/src/it/loadxm2.c Normal file
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/* _______ ____ __ ___ ___
* \ _ \ \ / \ / \ \ / / ' ' '
* | | \ \ | | || | \/ | . .
* | | | | | | || ||\ /| |
* | | | | | | || || \/ | | ' ' '
* | | | | | | || || | | . .
* | |_/ / \ \__// || | |
* /_______/ynamic \____/niversal /__\ /____\usic /| . . ibliotheque
* / \
* / . \
* loadxm2.c - Function to read a Fast Tracker II / / \ \
* file, opening and closing it for | < / \_
* you, and do an initial run-through. | \/ /\ /
* \_ / > /
* Split off from loadxm.c by entheh. | \ / /
* | ' /
* \__/
*/
#include "dumb.h"
DUH *dumb_load_xm(const char *filename)
{
DUH *duh = dumb_load_xm_quick(filename);
dumb_it_do_initial_runthrough(duh);
return duh;
}

604
Frameworks/Dumb/dumb/src/it/readmod.c Normal file
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/* _______ ____ __ ___ ___
* \ _ \ \ / \ / \ \ / / ' ' '
* | | \ \ | | || | \/ | . .
* | | | | | | || ||\ /| |
* | | | | | | || || \/ | | ' ' '
* | | | | | | || || | | . .
* | |_/ / \ \__// || | |
* /_______/ynamic \____/niversal /__\ /____\usic /| . . ibliotheque
* / \
* / . \
* readmod.c - Code to read a good old-fashioned / / \ \
* Amiga module from an open file. | < / \_
* | \/ /\ /
* By entheh. \_ / > /
* | \ / /
* | ' /
* \__/
*/
#include <stdlib.h>
#include <string.h>
#include <math.h>
#include "dumb.h"
#include "internal/it.h"
static int it_mod_read_pattern(IT_PATTERN *pattern, DUMBFILE *f, int n_channels, unsigned char *buffer)
{
int pos;
int channel;
int row;
IT_ENTRY *entry;
pattern->n_rows = 64;
if (n_channels == 0) {
/* Read the first four channels, leaving gaps for the rest. */
for (pos = 0; pos < 64*8*4; pos += 8*4)
dumbfile_getnc(buffer + pos, 4*4, f);
/* Read the other channels into the gaps we left. */
for (pos = 4*4; pos < 64*8*4; pos += 8*4)
dumbfile_getnc(buffer + pos, 4*4, f);
n_channels = 8;
} else
dumbfile_getnc(buffer, 64 * n_channels * 4, f);
if (dumbfile_error(f))
return -1;
/* compute number of entries */
pattern->n_entries = 64; /* Account for the row end markers */
pos = 0;
for (row = 0; row < 64; row++) {
for (channel = 0; channel < n_channels; channel++) {
if (buffer[pos+0] | buffer[pos+1] | buffer[pos+2] | buffer[pos+3])
pattern->n_entries++;
pos += 4;
}
}
pattern->entry = malloc(pattern->n_entries * sizeof(*pattern->entry));
if (!pattern->entry)
return -1;
entry = pattern->entry;
pos = 0;
for (row = 0; row < 64; row++) {
for (channel = 0; channel < n_channels; channel++) {
if (buffer[pos+0] | buffer[pos+1] | buffer[pos+2] | buffer[pos+3]) {
unsigned char sample = (buffer[pos+0] & 0xF0) | (buffer[pos+2] >> 4);
int period = ((int)(buffer[pos+0] & 0x0F) << 8) | buffer[pos+1];
entry->channel = channel;
entry->mask = 0;
if (period) {
int note;
entry->mask |= IT_ENTRY_NOTE;
/* frequency = (AMIGA_DIVISOR / 8) / (period * 2)
* C-1: period = 214 -> frequency = 16726
* so, set C5_speed to 16726
* and period = 214 should translate to C5 aka 60
* halve the period, go up an octive
*
* period = 214 / pow(DUMB_SEMITONE_BASE, note - 60)
* pow(DUMB_SEMITONE_BASE, note - 60) = 214 / period
* note - 60 = log(214/period) / log(DUMB_SEMITONE_BASE)
*/
note = (int)floor(log(214.0/period) / log(DUMB_SEMITONE_BASE) + 60.5);
entry->note = MID(0, note, 119);
// or should we preserve the period?
//entry->note = buffer[pos+0] & 0x0F; /* High nibble */
//entry->volpan = buffer[pos+1]; /* Low byte */
// and what about finetune?
}
if (sample) {
entry->mask |= IT_ENTRY_INSTRUMENT;
entry->instrument = sample;
}
_dumb_it_xm_convert_effect(buffer[pos+2] & 0x0F, buffer[pos+3], entry);
entry++;
}
pos += 4;
}
IT_SET_END_ROW(entry);
entry++;
}
return 0;
}
static int it_mod_read_sample_header(IT_SAMPLE *sample, DUMBFILE *f)
{
int finetune;
/**
21 22 Chars Sample 1 name. If the name is not a full
22 chars in length, it will be null
terminated.
If
the sample name begins with a '#' character (ASCII $23 (35)) then this is
assumed not to be an instrument name, and is probably a message.
*/
dumbfile_getnc(sample->name, 22, f);
sample->name[22] = 0;
sample->filename[0] = 0;
sample->length = dumbfile_mgetw(f) << 1;
finetune = (signed char)(dumbfile_getc(f) << 4) >> 4; /* signed nibble */
/** Each finetune step changes the note 1/8th of a semitone. */
sample->global_volume = 64;
sample->default_volume = dumbfile_getc(f); // Should we be setting global_volume to this instead?
sample->loop_start = dumbfile_mgetw(f) << 1;
sample->loop_end = sample->loop_start + (dumbfile_mgetw(f) << 1);
/**
Once this sample has been played completely from beginning
to end, if the repeat length (next field) is greater than two bytes it
will loop back to this position in the sample and continue playing. Once
it has played for the repeat length, it continues to loop back to the
repeat start offset. This means the sample continues playing until it is
told to stop.
*/
if (sample->length <= 0) {
sample->flags = 0;
return 0;
}
sample->flags = IT_SAMPLE_EXISTS;
sample->default_pan = 0;
sample->C5_speed = (long)(16726.0*pow(DUMB_PITCH_BASE, finetune*32));
// the above line might be wrong
if (sample->loop_end > sample->length)
sample->loop_end = sample->length;
if (sample->loop_end - sample->loop_start > 2)
sample->flags |= IT_SAMPLE_LOOP;
sample->vibrato_speed = 0;
sample->vibrato_depth = 0;
sample->vibrato_rate = 0;
sample->vibrato_waveform = 0; // do we have to set _all_ these?
return dumbfile_error(f);
}
static int it_mod_read_sample_data(IT_SAMPLE *sample, DUMBFILE *f)
{
long i;
long truncated_size;
/* let's get rid of the sample data coming after the end of the loop */
if ((sample->flags & IT_SAMPLE_LOOP) && sample->loop_end < sample->length) {
truncated_size = sample->length - sample->loop_end;
sample->length = sample->loop_end;
} else {
truncated_size = 0;
}
if (sample->length) {
sample->data = malloc(sample->length);
if (!sample->data)
return -1;
/* Sample data are stored in "8-bit two's compliment format" (sic). */
for (i = 0; i < sample->length; i++)
((signed char *)sample->data)[i] = dumbfile_getc(f);
} else
sample->flags &= ~IT_SAMPLE_EXISTS;
/* skip truncated data */
dumbfile_skip(f, truncated_size);
// Should we be truncating it?
if (dumbfile_error(f))
return -1;
return 0;
}
typedef struct BUFFERED_MOD BUFFERED_MOD;
struct BUFFERED_MOD
{
unsigned char *buffered;
long ptr, len;
DUMBFILE *remaining;
};
static int buffer_mod_skip(void *f, long n)
{
BUFFERED_MOD *bm = f;
if (bm->buffered) {
bm->ptr += n;
if (bm->ptr >= bm->len) {
free(bm->buffered);
bm->buffered = NULL;
return dumbfile_skip(bm->remaining, bm->ptr - bm->len);
}
return 0;
}
return dumbfile_skip(bm->remaining, n);
}
static int buffer_mod_getc(void *f)
{
BUFFERED_MOD *bm = f;
if (bm->buffered) {
int rv = bm->buffered[bm->ptr++];
if (bm->ptr >= bm->len) {
free(bm->buffered);
bm->buffered = NULL;
}
return rv;
}
return dumbfile_getc(bm->remaining);
}
static long buffer_mod_getnc(char *ptr, long n, void *f)
{
BUFFERED_MOD *bm = f;
if (bm->buffered) {
int left = bm->len - bm->ptr;
if (n >= left) {
int rv;
memcpy(ptr, bm->buffered + bm->ptr, left);
free(bm->buffered);
bm->buffered = NULL;
rv = dumbfile_getnc(ptr + left, n - left, bm->remaining);
return left + MAX(rv, 0);
}
memcpy(ptr, bm->buffered + bm->ptr, n);
bm->ptr += n;
return n;
}
return dumbfile_getnc(ptr, n, bm->remaining);
}
static void buffer_mod_close(void *f)
{
BUFFERED_MOD *bm = f;
if (bm->buffered) free(bm->buffered);
/* Do NOT close bm->remaining */
free(f);
}
DUMBFILE_SYSTEM buffer_mod_dfs = {
NULL,
&buffer_mod_skip,
&buffer_mod_getc,
&buffer_mod_getnc,
&buffer_mod_close
};
#define MOD_FFT_OFFSET (20 + 31*(22+2+1+1+2+2) + 1 + 1 + 128)
static DUMBFILE *dumbfile_buffer_mod(DUMBFILE *f, unsigned long *fft)
{
BUFFERED_MOD *bm = malloc(sizeof(*bm));
if (!bm) return NULL;
bm->buffered = malloc(MOD_FFT_OFFSET + 4);
if (!bm->buffered) {
free(bm);
return NULL;
}
bm->len = dumbfile_getnc(bm->buffered, MOD_FFT_OFFSET + 4, f);
if (bm->len > 0) {
if (bm->len >= MOD_FFT_OFFSET + 4)
*fft = (unsigned long)bm->buffered[MOD_FFT_OFFSET ] << 24
| (unsigned long)bm->buffered[MOD_FFT_OFFSET+1] << 16
| (unsigned long)bm->buffered[MOD_FFT_OFFSET+2] << 8
| (unsigned long)bm->buffered[MOD_FFT_OFFSET+3];
else
*fft = 0;
bm->ptr = 0;
} else {
free(bm->buffered);
bm->buffered = NULL;
}
bm->remaining = f;
return dumbfile_open_ex(bm, &buffer_mod_dfs);
}
static DUMB_IT_SIGDATA *it_mod_load_sigdata(DUMBFILE *f)
{
DUMB_IT_SIGDATA *sigdata;
int n_channels;
int i;
unsigned long fft;
f = dumbfile_buffer_mod(f, &fft);
if (!f)
return NULL;
sigdata = malloc(sizeof(*sigdata));
if (!sigdata) {
dumbfile_close(f);
return NULL;
}
/**
1 20 Chars Title of the song. If the title is not a
full 20 chars in length, it will be null-
terminated.
*/
if (dumbfile_getnc(sigdata->name, 20, f) < 20) {
free(sigdata);
dumbfile_close(f);
return NULL;
}
sigdata->name[20] = 0;
sigdata->n_samples = 31;
switch (fft) {
case DUMB_ID('M','.','K','.'):
case DUMB_ID('M','!','K','!'):
case DUMB_ID('M','&','K','!'):
case DUMB_ID('N','.','T','.'):
case DUMB_ID('F','L','T','4'):
n_channels = 4;
break;
case DUMB_ID('F','L','T','8'):
n_channels = 0;
/* 0 indicates a special case; two four-channel patterns must be
* combined into one eight-channel pattern. Pattern indexes must
* be halved. Why oh why do they obfuscate so?
*/
for (i = 0; i < 128; i++)
sigdata->order[i] >>= 1;
break;
case DUMB_ID('C','D','8','1'):
case DUMB_ID('O','C','T','A'):
case DUMB_ID('O','K','T','A'):
n_channels = 8;
break;
case DUMB_ID('1','6','C','N'):
n_channels = 16;
break;
case DUMB_ID('3','2','C','N'):
n_channels = 32;
break;
default:
/* If we get an illegal tag, assume 4 channels 15 samples. */
if ((fft & 0x0000FFFFL) == DUMB_ID(0,0,'C','H')) {
if (fft >= '1' << 24 && fft < '4' << 24) {
n_channels = ((fft & 0x00FF0000L) >> 16) - '0';
if ((unsigned int)n_channels >= 10) {
/* Rightmost character wasn't a digit. */
n_channels = 4;
sigdata->n_samples = 15;
} else {
n_channels += (((fft & 0xFF000000L) >> 24) - '0') * 10;
/* MODs should really only go up to 32 channels, but we're lenient. */
if ((unsigned int)(n_channels - 1) >= DUMB_IT_N_CHANNELS - 1) {
/* No channels or too many? Can't be right... */
n_channels = 4;
sigdata->n_samples = 15;
}
}
} else {
n_channels = 4;
sigdata->n_samples = 15;
}
} else if ((fft & 0x00FFFFFFL) == DUMB_ID(0,'C','H','N')) {
n_channels = (fft >> 24) - '0';
if ((unsigned int)(n_channels - 1) >= 9) {
/* Character was '0' or it wasn't a digit */
n_channels = 4;
sigdata->n_samples = 15;
}
} else if ((fft & 0xFFFFFF00L) == DUMB_ID('T','D','Z',0)) {
n_channels = (fft & 0x000000FFL) - '0';
if ((unsigned int)(n_channels - 1) >= 9) {
/* We've been very lenient, given that it should have
* been 1, 2 or 3, but this MOD has been very naughty and
* must be punished.
*/
n_channels = 4;
sigdata->n_samples = 15;
}
} else {
n_channels = 4;
sigdata->n_samples = 15;
}
}
sigdata->sample = malloc(sigdata->n_samples * sizeof(*sigdata->sample));
if (!sigdata->sample) {
free(sigdata);
dumbfile_close(f);
return NULL;
}
sigdata->song_message = NULL;
sigdata->order = NULL;
sigdata->instrument = NULL;
sigdata->pattern = NULL;
sigdata->midi = NULL;
sigdata->checkpoint = NULL;
sigdata->n_instruments = 0;
for (i = 0; i < sigdata->n_samples; i++)
sigdata->sample[i].data = NULL;
for (i = 0; i < sigdata->n_samples; i++) {
if (it_mod_read_sample_header(&sigdata->sample[i], f)) {
_dumb_it_unload_sigdata(sigdata);
dumbfile_close(f);
return NULL;
}
}
sigdata->n_orders = dumbfile_getc(f);
sigdata->restart_position = dumbfile_getc(f);
// what if this is >= 127? what about with Fast Tracker II?
if (sigdata->n_orders <= 0 || sigdata->n_orders > 128) { // is this right?
_dumb_it_unload_sigdata(sigdata);
dumbfile_close(f);
return NULL;
}
//if (sigdata->restart_position >= sigdata->n_orders)
//sigdata->restart_position = 0;
sigdata->order = malloc(128); /* We may need to scan the extra ones! */
if (!sigdata->order) {
_dumb_it_unload_sigdata(sigdata);
dumbfile_close(f);
return NULL;
}
if (dumbfile_getnc(sigdata->order, 128, f) < 128) {
_dumb_it_unload_sigdata(sigdata);
dumbfile_close(f);
return NULL;
}
/* "The old NST format contains only 15 samples (instead of 31). Further
* it doesn't contain a file format tag (id). So Pattern data offset is
* at 20+15*30+1+1+128."
* - Then I shall assume the File Format Tag never exists if there are
* only 15 samples. I hope this isn't a faulty assumption...
*/
if (sigdata->n_samples == 31)
dumbfile_skip(f, 4);
/* Work out how many patterns there are. */
sigdata->n_patterns = -1;
for (i = 0; i < 128; i++)
if (sigdata->n_patterns < sigdata->order[i])
sigdata->n_patterns = sigdata->order[i];
sigdata->n_patterns++;
/* May as well try to save a tiny bit of memory. */
if (sigdata->n_orders < 128) {
unsigned char *order = realloc(sigdata->order, sigdata->n_orders);
if (order) sigdata->order = order;
}
sigdata->pattern = malloc(sigdata->n_patterns * sizeof(*sigdata->pattern));
if (!sigdata->pattern) {
_dumb_it_unload_sigdata(sigdata);
dumbfile_close(f);
return NULL;
}
for (i = 0; i < sigdata->n_patterns; i++)
sigdata->pattern[i].entry = NULL;
/* Read in the patterns */
{
unsigned char *buffer = malloc(256 * n_channels); /* 64 rows * 4 bytes */
if (!buffer) {
_dumb_it_unload_sigdata(sigdata);
dumbfile_close(f);
return NULL;
}
for (i = 0; i < sigdata->n_patterns; i++) {
if (it_mod_read_pattern(&sigdata->pattern[i], f, n_channels, buffer) != 0) {
free(buffer);
_dumb_it_unload_sigdata(sigdata);
dumbfile_close(f);
return NULL;
}
}
free(buffer);
}
/* And finally, the sample data */
for (i = 0; i < sigdata->n_samples; i++) {
if (it_mod_read_sample_data(&sigdata->sample[i], f)) {
_dumb_it_unload_sigdata(sigdata);
dumbfile_close(f);
return NULL;
}
}
dumbfile_close(f); /* Destroy the BUFFERED_MOD DUMBFILE we were using. */
/* The DUMBFILE originally passed to our function is intact. */
/* Now let's initialise the remaining variables, and we're done! */
sigdata->flags = IT_WAS_AN_XM | IT_WAS_A_MOD | IT_OLD_EFFECTS | IT_COMPATIBLE_GXX | IT_STEREO;
sigdata->global_volume = 128;
sigdata->mixing_volume = 48;
/* We want 50 ticks per second; 50/6 row advances per second;
* 50*10=500 row advances per minute; 500/4=125 beats per minute.
*/
sigdata->speed = 6;
sigdata->tempo = 125;
sigdata->pan_separation = 128;
memset(sigdata->channel_volume, 64, DUMB_IT_N_CHANNELS);
for (i = 0; i < DUMB_IT_N_CHANNELS; i += 4) {
sigdata->channel_pan[i+0] = 16;
sigdata->channel_pan[i+1] = 48;
sigdata->channel_pan[i+2] = 48;
sigdata->channel_pan[i+3] = 16;
}
_dumb_it_fix_invalid_orders(sigdata);
return sigdata;
}
DUH *dumb_read_mod_quick(DUMBFILE *f)
{
sigdata_t *sigdata;
DUH_SIGTYPE_DESC *descptr = &_dumb_sigtype_it;
sigdata = it_mod_load_sigdata(f);
if (!sigdata)
return NULL;
{
const char *tag[1][2];
tag[0][0] = "TITLE";
tag[0][1] = ((DUMB_IT_SIGDATA *)sigdata)->name;
return make_duh(-1, 1, (const char *const (*)[2])tag, 1, &descptr, &sigdata);
}
}

29
Frameworks/Dumb/dumb/src/it/readmod2.c Normal file
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@ -0,0 +1,29 @@
/* _______ ____ __ ___ ___
* \ _ \ \ / \ / \ \ / / ' ' '
* | | \ \ | | || | \/ | . .
* | | | | | | || ||\ /| |
* | | | | | | || || \/ | | ' ' '
* | | | | | | || || | | . .
* | |_/ / \ \__// || | |
* /_______/ynamic \____/niversal /__\ /____\usic /| . . ibliotheque
* / \
* / . \
* readmod2.c - Function to read a good old- / / \ \
* fashioned Amiga module from an | < / \_
* open file and do an initial | \/ /\ /
* run-through. \_ / > /
* | \ / /
* Split off from readmod.c by entheh. | ' /
* \__/
*/
#include "dumb.h"
DUH *dumb_read_mod(DUMBFILE *f)
{
DUH *duh = dumb_read_mod_quick(f);
dumb_it_do_initial_runthrough(duh);
return duh;
}

670
Frameworks/Dumb/dumb/src/it/reads3m.c Normal file
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@ -0,0 +1,670 @@
/* _______ ____ __ ___ ___
* \ _ \ \ / \ / \ \ / / ' ' '
* | | \ \ | | || | \/ | . .
* | | | | | | || ||\ /| |
* | | | | | | || || \/ | | ' ' '
* | | | | | | || || | | . .
* | |_/ / \ \__// || | |
* /_______/ynamic \____/niversal /__\ /____\usic /| . . ibliotheque
* / \
* / . \
* reads3m.c - Code to read a ScreamTracker 3 / / \ \
* module from an open file. | < / \_
* | \/ /\ /
* By entheh. \_ / > /
* | \ / /
* | ' /
* \__/
*/
// IT_STEREO... :o
#include <stdlib.h>
#include <string.h>
#include "dumb.h"
#include "internal/it.h"
/** WARNING: this is duplicated in itread.c */
static int it_seek(DUMBFILE *f, long offset)
{
long pos = dumbfile_pos(f);
if (pos > offset)
return -1;
if (pos < offset)
if (dumbfile_skip(f, offset - pos))
return -1;
return 0;
}
static int it_s3m_read_sample_header(IT_SAMPLE *sample, long *offset, DUMBFILE *f)
{
unsigned char type;
int flags;
type = dumbfile_getc(f);
if (type > 1) {
/** WARNING: no adlib support */
}
dumbfile_getnc(sample->filename, 13, f);
sample->filename[13] = 0;
*offset = dumbfile_igetw(f) << 4;
sample->length = dumbfile_igetl(f);
sample->loop_start = dumbfile_igetl(f);
sample->loop_end = dumbfile_igetl(f);
sample->default_volume = dumbfile_getc(f);
dumbfile_skip(f, 1);
if (dumbfile_getc(f) != 0)
/* Sample is packed apparently (or error reading from file). We don't
* know how to read packed samples.
*/
return -1;
flags = dumbfile_getc(f);
sample->C5_speed = dumbfile_igetl(f) << 1;
/* Skip four unused bytes and three internal variables. */
dumbfile_skip(f, 4+2+2+4);
dumbfile_getnc(sample->name, 28, f);
sample->name[28] = 0;
if (type == 0) {
/* Looks like no-existy. Anyway, there's for sure no 'SCRS' ... */
sample->flags &= ~IT_SAMPLE_EXISTS;
return dumbfile_error(f);
}
if (dumbfile_mgetl(f) != DUMB_ID('S','C','R','S'))
return -1;
sample->global_volume = 64;
sample->flags = IT_SAMPLE_EXISTS;
if (flags & 1) sample->flags |= IT_SAMPLE_LOOP;
if (flags & 2) sample->flags |= IT_SAMPLE_STEREO;
if (flags & 4) sample->flags |= IT_SAMPLE_16BIT;
sample->default_pan = 0; // 0 = don't use, or 160 = centre?
if (sample->length <= 0)
sample->flags &= ~IT_SAMPLE_EXISTS;
else if (sample->flags & IT_SAMPLE_LOOP) {
if ((unsigned int)sample->loop_end > (unsigned int)sample->length)
sample->flags &= ~IT_SAMPLE_LOOP;
else if ((unsigned int)sample->loop_start >= (unsigned int)sample->loop_end)
sample->flags &= ~IT_SAMPLE_LOOP;
else
/* ScreamTracker seems not to save what comes after the loop end
* point, but rather to assume it is a duplicate of what comes at
* the loop start point. I am not completely sure of this though.
* It is easy to evade; simply truncate the sample.
*/
sample->length = sample->loop_end;
}
//Do we need to set all these?
sample->vibrato_speed = 0;
sample->vibrato_depth = 0;
sample->vibrato_rate = 0;
sample->vibrato_waveform = IT_VIBRATO_SINE;
return dumbfile_error(f);
}
static int it_s3m_read_sample_data(IT_SAMPLE *sample, int ffi, DUMBFILE *f)
{
long n;
long datasize = sample->length;
if (sample->flags & IT_SAMPLE_STEREO) datasize <<= 1;
sample->data = malloc(datasize * (sample->flags & IT_SAMPLE_16BIT ? 2 : 1));
if (!sample->data)
return -1;
if (sample->flags & IT_SAMPLE_STEREO) {
if (sample->flags & IT_SAMPLE_16BIT) {
for (n = 0; n < datasize; n += 2)
((short *)sample->data)[n] = dumbfile_igetw(f);
for (n = 1; n < datasize; n += 2)
((short *)sample->data)[n] = dumbfile_igetw(f);
} else {
for (n = 0; n < datasize; n += 2)
((signed char *)sample->data)[n] = dumbfile_getc(f);
for (n = 1; n < datasize; n += 2)
((signed char *)sample->data)[n] = dumbfile_getc(f);
}
} else if (sample->flags & IT_SAMPLE_16BIT)
for (n = 0; n < sample->length; n++)
((short *)sample->data)[n] = dumbfile_igetw(f);
else
for (n = 0; n < sample->length; n++)
((signed char *)sample->data)[n] = dumbfile_getc(f);
if (dumbfile_error(f))
return -1;
if (ffi != 1) {
/* Convert to signed. */
if (sample->flags & IT_SAMPLE_16BIT)
for (n = 0; n < datasize; n++)
((short *)sample->data)[n] ^= 0x8000;
else
for (n = 0; n < datasize; n++)
((signed char *)sample->data)[n] ^= 0x80;
}
return 0;
}
static int it_s3m_read_pattern(IT_PATTERN *pattern, DUMBFILE *f, unsigned char *buffer)
{
int buflen = 0;
int bufpos = 0;
IT_ENTRY *entry;
unsigned char channel;
/* Haha, this is hilarious!
*
* Well, after some experimentation, it seems that different S3M writers
* define the format in different ways. The S3M docs say that the first
* two bytes hold the "length of [the] packed pattern", and the packed
* pattern data follow. Judging by the contents of ARMANI.S3M, packaged
* with ScreamTracker itself, the measure of length _includes_ the two
* bytes used to store the length; in other words, we should read
* (length - 2) more bytes. However, aryx.s3m, packaged with ModPlug
* Tracker, excludes these two bytes, so (length) more bytes must be
* read.
*
* Call me crazy, but I just find it insanely funny that the format was
* misunderstood in this way :D
*
* Now we can't just risk reading two extra bytes, because then we
* overshoot, and DUMBFILEs don't support backward seeking (for a good
* reason). Luckily, there is a way. We can read the data little by
* little, and stop when we have 64 rows in memory. Provided we protect
* against buffer overflow, this method should work with all sensibly
* written S3M files. If you find one for which it does not work, please
* let me know at entheh@users.sf.net so I can look at it.
*/
/* Discard the length. */
dumbfile_skip(f, 2);
if (dumbfile_error(f))
return -1;
pattern->n_rows = 0;
pattern->n_entries = 0;
/* Read in the pattern data, little by little, and work out how many
* entries we need room for. Sorry, but this is just so funny...
*/
for (;;) {
unsigned char b = buffer[buflen++] = dumbfile_getc(f);
#if 1
static const unsigned char used[8] = {0, 2, 1, 3, 2, 4, 3, 5};
channel = b & 31;
b >>= 5;
pattern->n_entries++;
if (b) {
if (buflen + used[b] >= 65536) return -1;
dumbfile_getnc(buffer + buflen, used[b], f);
buflen += used[b];
} else {
/* End of row */
if (++pattern->n_rows == 64) break;
if (buflen >= 65536) return -1;
}
#else
if (b == 0) {
/* End of row */
pattern->n_entries++;
if (++pattern->n_rows == 64) break;
if (buflen >= 65536) return -1;
} else {
static const unsigned char used[8] = {0, 2, 1, 3, 2, 4, 3, 5};
channel = b & 31;
b >>= 5;
if (b) {
pattern->n_entries++;
if (buflen + used[b] >= 65536) return -1;
dumbfile_getnc(buffer + buflen, used[b], f);
buflen += used[b];
}
}
#endif
/* We have ensured that buflen < 65536 at this point, so it is safe
* to iterate and read at least one more byte without checking.
* However, now would be a good time to check for errors reading from
* the file.
*/
if (dumbfile_error(f))
return -1;
}
pattern->entry = malloc(pattern->n_entries * sizeof(*pattern->entry));
if (!pattern->entry)
return -1;
entry = pattern->entry;
while (bufpos < buflen) {
unsigned char b = buffer[bufpos++];
#if 1
if (!(b & ~31))
#else
if (b == 0)
#endif
{
/* End of row */
IT_SET_END_ROW(entry);
entry++;
continue;
}
channel = b & 31;
if (b & 224) {
entry->mask = 0;
entry->channel = channel;
if (b & 32) {
unsigned char n = buffer[bufpos++];
if (n != 255) {
if (n == 254)
entry->note = IT_NOTE_CUT;
else
entry->note = (n >> 4) * 12 + (n & 15);
entry->mask |= IT_ENTRY_NOTE;
}
entry->instrument = buffer[bufpos++];
if (entry->instrument)
entry->mask |= IT_ENTRY_INSTRUMENT;
}
if (b & 64) {
entry->volpan = buffer[bufpos++];
if (entry->volpan != 255)
entry->mask |= IT_ENTRY_VOLPAN;
}
if (b & 128) {
entry->effect = buffer[bufpos++];
entry->effectvalue = buffer[bufpos++];
if (entry->effect != 255) {
entry->mask |= IT_ENTRY_EFFECT;
if (entry->effect == IT_BREAK_TO_ROW)
entry->effectvalue -= (entry->effectvalue >> 4) * 6;
}
/** WARNING: ARGH! CONVERT TEH EFFECTS!@~ */
}
entry++;
}
}
ASSERT(entry == pattern->entry + pattern->n_entries);
return 0;
}
/** WARNING: this is duplicated in itread.c - also bad practice to use the same struct name unless they are unified in a header */
/* Currently we assume the sample data are stored after the sample headers in
* module files. This assumption may be unjustified; let me know if you have
* trouble.
*/
#define IT_COMPONENT_INSTRUMENT 1
#define IT_COMPONENT_PATTERN 2
#define IT_COMPONENT_SAMPLE 3
typedef struct IT_COMPONENT
{
unsigned char type;
unsigned char n;
long offset;
short sampfirst; /* component[sampfirst] = first sample data after this */
short sampnext; /* sampnext is used to create linked lists of sample data */
}
IT_COMPONENT;
static int it_component_compare(const void *e1, const void *e2)
{
return ((const IT_COMPONENT *)e1)->offset -
((const IT_COMPONENT *)e2)->offset;
}
static DUMB_IT_SIGDATA *it_s3m_load_sigdata(DUMBFILE *f)
{
DUMB_IT_SIGDATA *sigdata;
int flags, cwtv, ffi;
int default_pan_present;
IT_COMPONENT *component;
int n_components = 0;
int n;
unsigned char *buffer;
sigdata = malloc(sizeof(*sigdata));
if (!sigdata) return NULL;
dumbfile_getnc(sigdata->name, 28, f);
sigdata->name[28] = 0;
if (dumbfile_getc(f) != 0x1A || dumbfile_getc(f) != 16) {
free(sigdata);
return NULL;
}
dumbfile_skip(f, 2);
sigdata->song_message = NULL;
sigdata->order = NULL;
sigdata->instrument = NULL;
sigdata->sample = NULL;
sigdata->pattern = NULL;
sigdata->midi = NULL;
sigdata->checkpoint = NULL;
sigdata->n_orders = dumbfile_igetw(f);
sigdata->n_instruments = 0;
sigdata->n_samples = dumbfile_igetw(f);
sigdata->n_patterns = dumbfile_igetw(f);
if (dumbfile_error(f) || sigdata->n_orders <= 0 || sigdata->n_samples > 256 || sigdata->n_patterns > 256) {
_dumb_it_unload_sigdata(sigdata);
return NULL;
}
sigdata->order = malloc(sigdata->n_orders);
if (!sigdata->order) {
_dumb_it_unload_sigdata(sigdata);
return NULL;
}
if (sigdata->n_samples) {
sigdata->sample = malloc(sigdata->n_samples * sizeof(*sigdata->sample));
if (!sigdata->sample) {
_dumb_it_unload_sigdata(sigdata);
return NULL;
}
for (n = 0; n < sigdata->n_samples; n++)
sigdata->sample[n].data = NULL;
}
if (sigdata->n_patterns) {
sigdata->pattern = malloc(sigdata->n_patterns * sizeof(*sigdata->pattern));
if (!sigdata->pattern) {
_dumb_it_unload_sigdata(sigdata);
return NULL;
}
for (n = 0; n < sigdata->n_patterns; n++)
sigdata->pattern[n].entry = NULL;
}
flags = dumbfile_igetw(f);
cwtv = dumbfile_igetw(f);
if (cwtv == 0x1300) {
/** WARNING: volume slides on every frame */
}
ffi = dumbfile_igetw(f);
/** WARNING: which ones? */
sigdata->flags = IT_STEREO | IT_OLD_EFFECTS | IT_COMPATIBLE_GXX;
if (dumbfile_mgetl(f) != DUMB_ID('S','C','R','M')) {
_dumb_it_unload_sigdata(sigdata);
return NULL;
}
sigdata->global_volume = dumbfile_getc(f) << 1;
sigdata->speed = dumbfile_getc(f);
if (sigdata->speed == 0) sigdata->speed = 6; // Should we? What about tempo?
sigdata->tempo = dumbfile_getc(f);
/*master_volume = */dumbfile_getc(f); // 7 bits; +128 for stereo
//what do we do with master_volume? it's not the same as mixing volume...
sigdata->mixing_volume = 48;
/* Skip GUS Ultra Click Removal byte. */
dumbfile_getc(f);
default_pan_present = dumbfile_getc(f);
dumbfile_skip(f, 8);
/* Skip Special Custom Data Pointer. */
/** WARNING: investigate this? */
dumbfile_igetw(f);
/* Channel settings for 32 channels, 255=unused, +128=disabled */
{
int i;
for (i = 0; i < 32; i++) {
int c = dumbfile_getc(f);
if (!(c & (128 | 16))) { /* +128=disabled, +16=Adlib */
sigdata->channel_volume[i] = 64;
sigdata->channel_pan[i] = c & 8 ? 12 : 3;
/** WARNING: ah, but it should be 7 for mono... */
} else {
/** WARNING: this could be improved if we support channel muting... */
sigdata->channel_volume[i] = 0;
sigdata->channel_pan[i] = 7;
}
}
}
/* Orders, byte each, length = sigdata->n_orders (should be even) */
dumbfile_getnc(sigdata->order, sigdata->n_orders, f);
sigdata->restart_position = 0;
component = malloc(768*sizeof(*component));
if (!component) {
_dumb_it_unload_sigdata(sigdata);
return NULL;
}
for (n = 0; n < sigdata->n_samples; n++) {
component[n_components].type = IT_COMPONENT_SAMPLE;
component[n_components].n = n;
component[n_components].offset = dumbfile_igetw(f) << 4;
component[n_components].sampfirst = -1;
n_components++;
}
for (n = 0; n < sigdata->n_patterns; n++) {
long offset = dumbfile_igetw(f) << 4;
if (offset) {
component[n_components].type = IT_COMPONENT_PATTERN;
component[n_components].n = n;
component[n_components].offset = offset;
component[n_components].sampfirst = -1;
n_components++;
} else {
/** WARNING: Empty 64-row pattern ... ? (this does happen!) */
sigdata->pattern[n].n_rows = 64;
sigdata->pattern[n].n_entries = 0;
}
}
qsort(component, n_components, sizeof(IT_COMPONENT), &it_component_compare);
/* I found a really dumb S3M file that claimed to contain default pan
* data but didn't contain any. Programs would load it by reading part of
* the first instrument header, assuming the data to be default pan
* positions, and then rereading the instrument module. We cannot do this
* without obfuscating the file input model, so we insert an extra check
* here that we won't overrun the start of the first component.
*/
if (default_pan_present == 252 && component[0].offset >= dumbfile_pos(f) + 32) {
/* Channel default pan positions */
int i;
for (i = 0; i < 32; i++) {
int c = dumbfile_getc(f);
if (c & 32)
sigdata->channel_pan[i] = c & 15;
}
}
{
int i;
for (i = 0; i < 32; i++) {
sigdata->channel_pan[i] -= (sigdata->channel_pan[i] & 8) >> 3;
sigdata->channel_pan[i] = ((int)sigdata->channel_pan[i] << 5) / 7;
}
}
sigdata->pan_separation = 128;
if (dumbfile_error(f)) {
free(component);
_dumb_it_unload_sigdata(sigdata);
return NULL;
}
buffer = malloc(65536);
if (!buffer) {
free(component);
_dumb_it_unload_sigdata(sigdata);
return NULL;
}
for (n = 0; n < n_components; n++) {
long offset;
int m;
if (it_seek(f, component[n].offset)) {
free(buffer);
free(component);
_dumb_it_unload_sigdata(sigdata);
return NULL;
}
switch (component[n].type) {
case IT_COMPONENT_PATTERN:
if (it_s3m_read_pattern(&sigdata->pattern[component[n].n], f, buffer)) {
free(buffer);
free(component);
_dumb_it_unload_sigdata(sigdata);
return NULL;
}
break;
case IT_COMPONENT_SAMPLE:
if (it_s3m_read_sample_header(&sigdata->sample[component[n].n], &offset, f)) {
free(buffer);
free(component);
_dumb_it_unload_sigdata(sigdata);
return NULL;
}
if (sigdata->sample[component[n].n].flags & IT_SAMPLE_EXISTS) {
short *sample;
for (m = n + 1; m < n_components; m++)
if (component[m].offset > offset)
break;
m--;
sample = &component[m].sampfirst;
while (*sample >= 0 && component[*sample].offset <= offset)
sample = &component[*sample].sampnext;
component[n].sampnext = *sample;
*sample = n;
component[n].offset = offset;
}
}
m = component[n].sampfirst;
while (m >= 0) {
if (it_seek(f, component[m].offset)) {
free(buffer);
free(component);
_dumb_it_unload_sigdata(sigdata);
return NULL;
}
if (it_s3m_read_sample_data(&sigdata->sample[component[m].n], ffi, f)) {
free(buffer);
free(component);
_dumb_it_unload_sigdata(sigdata);
return NULL;
}
m = component[m].sampnext;
}
}
free(buffer);
free(component);
_dumb_it_fix_invalid_orders(sigdata);
return sigdata;
}
DUH *dumb_read_s3m_quick(DUMBFILE *f)
{
sigdata_t *sigdata;
DUH_SIGTYPE_DESC *descptr = &_dumb_sigtype_it;
sigdata = it_s3m_load_sigdata(f);
if (!sigdata)
return NULL;
{
const char *tag[1][2];
tag[0][0] = "TITLE";
tag[0][1] = ((DUMB_IT_SIGDATA *)sigdata)->name;
return make_duh(-1, 1, (const char *const (*)[2])tag, 1, &descptr, &sigdata);
}
}

29
Frameworks/Dumb/dumb/src/it/reads3m2.c Normal file
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@ -0,0 +1,29 @@
/* _______ ____ __ ___ ___
* \ _ \ \ / \ / \ \ / / ' ' '
* | | \ \ | | || | \/ | . .
* | | | | | | || ||\ /| |
* | | | | | | || || \/ | | ' ' '
* | | | | | | || || | | . .
* | |_/ / \ \__// || | |
* /_______/ynamic \____/niversal /__\ /____\usic /| . . ibliotheque
* / \
* / . \
* reads3m2.c - Function to read a ScreamTracker 3 / / \ \
* module from an open file and do an | < / \_
* initial run-through. | \/ /\ /
* \_ / > /
* Split off from reads3m.c by entheh. | \ / /
* | ' /
* \__/
*/
#include "dumb.h"
DUH *dumb_read_s3m(DUMBFILE *f)
{
DUH *duh = dumb_read_s3m_quick(f);
dumb_it_do_initial_runthrough(duh);
return duh;
}

1007
Frameworks/Dumb/dumb/src/it/readxm.c Normal file
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File diff suppressed because it is too large Load Diff

29
Frameworks/Dumb/dumb/src/it/readxm2.c Normal file
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@ -0,0 +1,29 @@
/* _______ ____ __ ___ ___
* \ _ \ \ / \ / \ \ / / ' ' '
* | | \ \ | | || | \/ | . .
* | | | | | | || ||\ /| |
* | | | | | | || || \/ | | ' ' '
* | | | | | | || || | | . .
* | |_/ / \ \__// || | |
* /_______/ynamic \____/niversal /__\ /____\usic /| . . ibliotheque
* / \
* / . \
* readxm2.c - Function to read a Fast Tracker II / / \ \
* module from an open file and do an | < / \_
* initial run-through. | \/ /\ /
* \_ / > /
* Split off from readxm.c by entheh. | \ / /
* | ' /
* \__/
*/
#include "dumb.h"
DUH *dumb_read_xm(DUMBFILE *f)
{
DUH *duh = dumb_read_xm_quick(f);
dumb_it_do_initial_runthrough(duh);
return duh;
}

242
Frameworks/Dumb/dumb/src/it/xmeffect.c Normal file
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/* _______ ____ __ ___ ___
* \ _ \ \ / \ / \ \ / / ' ' '
* | | \ \ | | || | \/ | . .
* | | | | | | || ||\ /| |
* | | | | | | || || \/ | | ' ' '
* | | | | | | || || | | . .
* | |_/ / \ \__// || | |
* /_______/ynamic \____/niversal /__\ /____\usic /| . . ibliotheque
* / \
* / . \
* xmeffect.c - Code for converting MOD/XM / / \ \
* effects to IT effects. | < / \_
* | \/ /\ /
* By Julien Cugniere. Ripped out of readxm.c \_ / > /
* by entheh. | \ / /
* | ' /
* \__/
*/
#include <stdlib.h>
#include <string.h>
#include "dumb.h"
#include "internal/it.h"
#if 0
unsigned char **_dumb_malloc2(int w, int h)
{
unsigned char **line = malloc(h * sizeof(*line));
int i;
if (!line) return NULL;
line[0] = malloc(w * h * sizeof(*line[0]));
if (!line[0]) {
free(line);
return NULL;
}
for (i = 1; i < h; i++)
line[i] = line[i-1] + w;
memset(line[0], 0, w*h);
return line;
}
void _dumb_free2(unsigned char **line)
{
if (line) {
if (line[0])
free(line[0]);
free(line);
}
}
/* Effects having a memory. 2 means that the two parts of the effectvalue
* should be handled separately.
*/
static const char xm_has_memory[] = {
/* 0 1 2 3 4 5 6 7 8 9 A B C D (E) F G H K L P R T (X) */
0, 1, 1, 1, 2, 1, 1, 2, 0, 0, 1, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 1, 0, 2, 0, 0, 0, 0, 0, 0, 0, 0,
/* E0 E1 E2 E3 E4 E5 E6 E7 E9 EA EB EC ED EE X1 X2 */
0, 1, 1, 0, 0, 0, 0, 0, 0, 0, 1, 1, 0, 0, 0, 0, 0, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
};
#endif
/* Effects marked with 'special' are handled specifically in itrender.c */
void _dumb_it_xm_convert_effect(int effect, int value, IT_ENTRY *entry)
{
const int log = 0;
if ((!effect && !value) || (effect >= XM_N_EFFECTS))
return;
if (log) printf("%c%02X", (effect<10)?('0'+effect):('A'+effect-10), value);
/* Linearisation of the effect number... */
if (effect == XM_E) {
effect = EBASE + HIGH(value);
value = LOW(value);
} else if (effect == XM_X) {
effect = XBASE + HIGH(value);
value = LOW(value);
}
if (log) printf(" - %2d %02X", effect, value);
#if 0 // This should be handled in itrender.c!
/* update effect memory */
switch (xm_has_memory[effect]) {
case 1:
if (!value)
value = memory[entry->channel][effect];
else
memory[entry->channel][effect] = value;
break;
case 2:
if (!HIGH(value))
SET_HIGH(value, HIGH(memory[entry->channel][effect]));
else
SET_HIGH(memory[entry->channel][effect], HIGH(value));
if (!LOW(value))
SET_LOW(value, LOW(memory[entry->channel][effect]));
else
SET_LOW(memory[entry->channel][effect], LOW(value));
break;
}
#endif
/* convert effect */
entry->mask |= IT_ENTRY_EFFECT;
switch (effect) {
case XM_APPREGIO: effect = IT_ARPEGGIO; break;
case XM_VIBRATO: effect = IT_VIBRATO; break;
case XM_TONE_PORTAMENTO: effect = IT_TONE_PORTAMENTO; break; /** TODO: glissando control */
case XM_TREMOLO: effect = IT_TREMOLO; break;
case XM_SET_PANNING: effect = IT_SET_PANNING; break;
case XM_SAMPLE_OFFSET: effect = IT_SET_SAMPLE_OFFSET; break;
case XM_POSITION_JUMP: effect = IT_JUMP_TO_ORDER; break;
case XM_MULTI_RETRIG: effect = IT_RETRIGGER_NOTE; break;
case XM_TREMOR: effect = IT_TREMOR; break;
case XM_PORTAMENTO_UP: effect = IT_XM_PORTAMENTO_UP; break;
case XM_PORTAMENTO_DOWN: effect = IT_XM_PORTAMENTO_DOWN; break;
case XM_SET_CHANNEL_VOLUME: effect = IT_SET_CHANNEL_VOLUME; break; /* special */
case XM_VOLSLIDE_TONEPORTA: effect = IT_VOLSLIDE_TONEPORTA; break; /* special */
case XM_VOLSLIDE_VIBRATO: effect = IT_VOLSLIDE_VIBRATO; break; /* special */
case XM_PATTERN_BREAK:
effect = IT_BREAK_TO_ROW;
value = BCD_TO_NORMAL(value);
break;
case XM_VOLUME_SLIDE: /* special */
effect = IT_VOLUME_SLIDE;
value = HIGH(value) ? EFFECT_VALUE(HIGH(value), 0) : EFFECT_VALUE(0, LOW(value));
break;
case XM_PANNING_SLIDE:
effect = IT_PANNING_SLIDE;
value = HIGH(value) ? EFFECT_VALUE(HIGH(value), 0) : EFFECT_VALUE(0, LOW(value));
//value = HIGH(value) ? EFFECT_VALUE(0, HIGH(value)) : EFFECT_VALUE(LOW(value), 0);
break;
case XM_GLOBAL_VOLUME_SLIDE: /* special */
effect = IT_GLOBAL_VOLUME_SLIDE;
value = HIGH(value) ? EFFECT_VALUE(HIGH(value), 0) : EFFECT_VALUE(0, LOW(value));
break;
case XM_SET_TEMPO_BPM:
effect = (value < 0x20) ? (IT_SET_SPEED) : (IT_SET_SONG_TEMPO);
break;
case XM_SET_GLOBAL_VOLUME:
effect = IT_SET_GLOBAL_VOLUME;
value *= 2;
break;
case XM_KEY_OFF:
effect = IT_XM_KEY_OFF;
break;
case XM_SET_ENVELOPE_POSITION:
effect = IT_XM_SET_ENVELOPE_POSITION;
break;
case EBASE+XM_E_SET_FILTER: effect = SBASE+IT_S_SET_FILTER; break;
case EBASE+XM_E_SET_GLISSANDO_CONTROL: effect = SBASE+IT_S_SET_GLISSANDO_CONTROL; break; /** TODO */
case EBASE+XM_E_SET_FINETUNE: effect = SBASE+IT_S_FINETUNE; break; /** TODO */
case EBASE+XM_E_SET_LOOP: effect = SBASE+IT_S_PATTERN_LOOP; break;
case EBASE+XM_E_NOTE_CUT: effect = SBASE+IT_S_DELAYED_NOTE_CUT; break;
case EBASE+XM_E_NOTE_DELAY: effect = SBASE+IT_S_NOTE_DELAY; break;
case EBASE+XM_E_PATTERN_DELAY: effect = SBASE+IT_S_PATTERN_DELAY; break;
case EBASE+XM_E_FINE_VOLSLIDE_UP: effect = IT_XM_FINE_VOLSLIDE_UP; break;
case EBASE+XM_E_FINE_VOLSLIDE_DOWN: effect = IT_XM_FINE_VOLSLIDE_DOWN; break;
case EBASE + XM_E_FINE_PORTA_UP:
effect = IT_PORTAMENTO_UP;
value = EFFECT_VALUE(0xF, value);
break;
case EBASE + XM_E_FINE_PORTA_DOWN:
effect = IT_PORTAMENTO_DOWN;
value = EFFECT_VALUE(0xF, value);
break;
case EBASE + XM_E_RETRIG_NOTE:
effect = IT_XM_RETRIGGER_NOTE;
value = EFFECT_VALUE(0, value);
break;
case EBASE + XM_E_SET_VIBRATO_CONTROL:
effect = SBASE+IT_S_SET_VIBRATO_WAVEFORM;
value &= ~4; /** TODO: value&4 -> don't retrig wave */
break;
case EBASE + XM_E_SET_TREMOLO_CONTROL:
effect = SBASE+IT_S_SET_TREMOLO_WAVEFORM;
value &= ~4; /** TODO: value&4 -> don't retrig wave */
break;
case XBASE + XM_X_EXTRAFINE_PORTA_UP:
effect = IT_PORTAMENTO_UP;
value = EFFECT_VALUE(0xE, value);
break;
case XBASE + XM_X_EXTRAFINE_PORTA_DOWN:
effect = IT_PORTAMENTO_DOWN;
value = EFFECT_VALUE(0xE, value);
break;
default:
/* user effect (often used in demos for synchronisation) */
entry->mask &= ~IT_ENTRY_EFFECT;
}
if (log) printf(" - %2d %02X", effect, value);
/* Inverse linearisation... */
if (effect >= SBASE && effect < SBASE+16) {
value = EFFECT_VALUE(effect-SBASE, value);
effect = IT_S;
}
if (log) printf(" - %c%02X\n", 'A'+effect-1, value);
entry->effect = effect;
entry->effectvalue = value;
}