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cog/ThirdParty/BASS/sflist.c

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/* vim: set et ts=3 sw=3 sts=3 ft=c:
*
* Copyright (C) 2021 Christopher Snowhill. All rights reserved.
* https://github.com/kode54/sflist
* https://gist.github.com/kode54/a7bb01a0db3f2e996145b77f0ca510d5
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#include <ctype.h>
#include <math.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <json-builder.h>
#include "sflist.h"
#ifndef PRId64
#ifdef _MSC_VER
#define PRId64 "I64d"
#else
#define PRId64 "lld"
#endif
#endif
/* Extras needed */
static int json_equal(const json_value *a, const json_value *b);
static int json_equal_array(const json_value *a, const json_value *b) {
unsigned int i, j;
if(a->u.array.length != b->u.array.length) return 0;
for(i = 0, j = a->u.array.length; i < j; ++i) {
if(!json_equal(a->u.array.values[i], b->u.array.values[i]))
return 0;
}
return 1;
}
static int json_equal_object(const json_value *a, const json_value *b) {
unsigned int i, j;
if(a->u.object.length != b->u.object.length) return 0;
for(i = 0, j = a->u.object.length; i < j; ++i) {
if(strcmp(a->u.object.values[i].name, b->u.object.values[i].name))
return 0;
if(!json_equal(a->u.object.values[i].value, b->u.object.values[i].value))
return 0;
}
return 1;
}
static int json_equal(const json_value *a, const json_value *b) {
if(a->type != b->type) return 0;
switch(a->type) {
case json_none:
case json_null:
return 1;
case json_integer:
return a->u.integer == b->u.integer;
case json_double:
return a->u.dbl == b->u.dbl;
case json_boolean:
return !a->u.boolean == !b->u.boolean;
case json_string:
return !strcmp(a->u.string.ptr, b->u.string.ptr);
case json_array:
return json_equal_array(a, b);
case json_object:
return json_equal_object(a, b);
}
return 0;
}
static int json_signum(double val) {
return (val > 0.0) - (val < 0.0);
}
#define json_compare_invalid -1000
static int json_compare(const json_value *a, const json_value *b) {
if(a->type != b->type) return json_compare_invalid;
switch(a->type) {
case json_none:
case json_null:
return 0;
case json_integer:
return (int)(a->u.integer - b->u.integer);
case json_double:
return json_signum(a->u.dbl - b->u.dbl);
case json_boolean:
return !!a->u.boolean - !!b->u.boolean;
case json_string:
return strcmp(a->u.string.ptr, b->u.string.ptr);
case json_array:
case json_object:
return json_compare_invalid;
}
return json_compare_invalid;
}
static int json_array_contains_value(const json_value *array, const json_value *value) {
unsigned int i, j;
for(i = 0, j = array->u.array.length; i < j; ++i) {
if(json_equal(array->u.array.values[i], value))
return 1;
}
return 0;
}
json_value *json_array_merge(json_value *arrayA, json_value *arrayB) {
unsigned int i, j;
if(arrayA->type != json_array || arrayB->type != json_array)
return 0;
for(i = 0, j = arrayB->u.array.length; i < j; ++i) {
if(!json_array_contains_value(arrayA, arrayB->u.array.values[i])) {
json_array_push(arrayA, arrayB->u.array.values[i]);
}
}
json_builder_free(arrayB);
return arrayA;
}
static int json_compare_callback(const void *a, const void *b) {
const json_value *aa = (const json_value *)a;
const json_value *bb = (const json_value *)b;
return json_compare(aa, bb);
}
json_value *json_array_sort(json_value *array) {
unsigned int i, j;
json_type type;
if(array->type != json_array) return 0;
if(array->u.array.length < 2) return array;
type = array->u.array.values[0]->type;
for(i = 1, j = array->u.array.length; i < j; ++i) {
if(array->u.array.values[i]->type != type)
return 0;
}
qsort(array->u.array.values, j, sizeof(json_value *), json_compare_callback);
return array;
}
/* Processing begins */
static size_t sflist_parse_int(const char *in, const char **end) {
size_t rval = 0;
while(in < *end) {
if(isdigit(*in)) {
rval = (rval * 10) + (*in - '0');
} else
break;
++in;
}
*end = in;
return rval;
}
static double sflist_parse_float(const char *in, const char **end) {
size_t whole = 0;
size_t decimal = 0;
size_t decimal_places = 0;
double sign = 1.0;
const char *end_orig = *end;
const char *ptr = in;
if(*ptr == '-') {
++ptr;
sign = -1.0;
}
whole = sflist_parse_int(ptr, end);
if(*end == ptr || (**end != '.' && *end < end_orig)) {
*end = in;
return 0.0;
}
if(*end < end_orig) {
ptr = *end + 1;
*end = end_orig;
decimal = sflist_parse_int(ptr, end);
if(*end == ptr || *end < end_orig) {
*end = in;
return 0.0;
}
decimal_places = *end - ptr;
}
return (((double)whole) + (((double)decimal) / pow(10.0, (double)decimal_places))) * sign;
}
static json_value *sflist_load_v1(const char *sflist, size_t size, char *error_buf) {
json_value *rval = 0;
json_value *arr = json_array_new(0);
json_value *channels = 0;
json_value *patchMappings = 0;
double gain = 0.0;
const char *ptr = sflist;
const char *end = sflist + size;
unsigned int cur_line = 0;
while(ptr < end) {
const char *line_start = ptr;
json_value *obj = 0;
const char *path = 0;
const char *pipe = 0;
const char *lend = ptr;
++cur_line;
while(lend < end && *lend && *lend != '\r' && *lend != '\n') {
if(*lend == '|')
pipe = lend;
++lend;
}
if(pipe)
path = pipe + 1;
else
path = ptr;
if(pipe) {
while(ptr < pipe) {
char c;
const char *fend = ptr;
const char *vend;
while(fend < pipe && *fend != '&') ++fend;
vend = fend;
switch(c = *ptr++) {
case '&':
continue;
case 'c': {
json_value *this_channels;
size_t channel_low = sflist_parse_int(ptr, &vend);
size_t channel_high = 0;
size_t i;
if(vend == ptr || (*vend != '-' && *vend != '&' && *vend != '|')) {
sprintf(error_buf, "Invalid channel number (%u:%u)", cur_line, (int)(vend - line_start + 1));
goto error;
}
if(*vend != '-')
channel_high = channel_low;
else {
ptr = vend + 1;
vend = fend;
channel_high = sflist_parse_int(ptr, &vend);
if(vend == ptr || (*vend != '&' && *vend != '|')) {
sprintf(error_buf, "Invalid channel range end value (%u:%u)", cur_line, (int)(vend - line_start + 1));
goto error;
}
}
if(!channels)
channels = json_array_new(0);
this_channels = json_array_new(0);
for(i = channel_low; i <= channel_high; ++i)
json_array_push(this_channels, json_integer_new(i));
channels = json_array_merge(channels, this_channels);
ptr = fend;
} break;
case 'p': {
json_value *mapping = 0;
json_value *mapping_destination = 0;
json_value *mapping_source = 0;
long source_bank = -1;
long source_program = -1;
long dest_bank = -1;
long dest_program = -1;
size_t val = sflist_parse_int(ptr, &vend);
if(vend == ptr || (*vend != '=' && *vend != ',' && *vend != '|')) {
sprintf(error_buf, "Invalid preset number (%u:%u)", cur_line, (int)(vend - line_start + 1));
goto error;
}
dest_program = val;
if(*vend == ',') {
dest_bank = val;
ptr = vend + 1;
vend = fend;
val = sflist_parse_int(ptr, &vend);
if(vend == ptr || (*vend != '=' && *vend != '|')) {
sprintf(error_buf, "Invalid preset number (%u:%u)", cur_line, (int)(vend - line_start + 1));
goto error;
}
dest_program = val;
}
if(*vend == '=') {
ptr = vend + 1;
vend = fend;
val = sflist_parse_int(ptr, &vend);
if(vend == ptr || (*vend != ',' && *vend != '|')) {
sprintf(error_buf, "Invalid preset number (%u:%u)", cur_line, (int)(vend - line_start + 1));
goto error;
}
source_program = val;
if(*vend == ',') {
source_bank = val;
ptr = vend + 1;
vend = fend;
val = sflist_parse_int(ptr, &vend);
if(vend == ptr || (*vend != '&' && *vend != '|')) {
sprintf(error_buf, "Invalid preset number (%u:%u)", cur_line, (int)(vend - line_start + 1));
goto error;
}
source_program = val;
}
}
if(!patchMappings)
patchMappings = json_array_new(0);
mapping = json_object_new(0);
mapping_destination = json_object_new(0);
if(dest_bank != -1) {
json_object_push(mapping_destination, "bank", json_integer_new(dest_bank));
}
json_object_push(mapping_destination, "program", json_integer_new(dest_program));
json_object_push(mapping, "destination", mapping_destination);
if(source_program != -1) {
mapping_source = json_object_new(0);
if(source_bank != -1) {
json_object_push(mapping_source, "bank", json_integer_new(source_bank));
}
json_object_push(mapping_source, "program", json_integer_new(source_program));
json_object_push(mapping, "source", mapping_source);
}
json_array_push(patchMappings, mapping);
ptr = fend;
} break;
case 'g': {
double val = sflist_parse_float(ptr, &vend);
if(vend == ptr || vend < fend) {
sprintf(error_buf, "Invalid gain value (%u:%u)", cur_line, (int)(vend - line_start + 1));
goto error;
}
gain = val;
ptr = fend;
} break;
default:
sprintf(error_buf, "Invalid character in preset '%c' (%u:%u)", c, cur_line, (unsigned int)(ptr - line_start));
goto error;
}
}
}
obj = json_object_new(0);
json_object_push(obj, "fileName", json_string_new_length((unsigned int)(lend - path), path));
if(gain != 0.0) {
json_object_push(obj, "gain", json_double_new(gain));
gain = 0.0;
}
if(channels) {
channels = json_array_sort(channels);
json_object_push(obj, "channels", channels);
channels = 0;
}
if(patchMappings) {
json_object_push(obj, "patchMappings", patchMappings);
patchMappings = 0;
}
json_array_push(arr, obj);
ptr = lend;
while(ptr < end && (*ptr == '\n' || *ptr == '\r')) ++ptr;
}
rval = json_object_new(1);
json_object_push(rval, "soundFonts", arr);
return rval;
error:
if(channels) json_builder_free(channels);
if(patchMappings) json_builder_free(patchMappings);
if(arr) json_builder_free(arr);
return 0;
}
static json_value *sflist_load_v2(const char *sflist, size_t size, char *error) {
json_value *rval = 0;
json_settings settings = { 0 };
settings.value_extra = json_builder_extra;
rval = json_parse_ex(&settings, sflist, size, error);
return rval;
}
static const json_value *json_object_item(const json_value *object, const char *name) {
unsigned int i, j;
if(object->type != json_object) return &json_value_none;
for(i = 0, j = object->u.object.length; i < j; ++i) {
if(!strcmp(object->u.object.values[i].name, name))
return object->u.object.values[i].value;
}
return &json_value_none;
}
static void sflist_process_patchmappings(BASS_MIDI_FONTEX2 *out, BASS_MIDI_FONTEX2 *fontex, const json_value *patchMappings, unsigned int channel, unsigned int channelCount) {
unsigned int i, j;
for(i = 0, j = patchMappings->u.array.length; i < j; ++i) {
json_value *preset = patchMappings->u.array.values[i];
const json_value *destination = json_object_item(preset, "destination");
const json_value *source = json_object_item(preset, "source");
const json_value *destination_bank = json_object_item(destination, "bank");
const json_value *destination_program = json_object_item(destination, "program");
const json_value *source_bank = json_object_item(source, "bank");
const json_value *source_program = json_object_item(source, "program");
fontex->spreset = (source_program->type == json_none) ? -1 : (int)source_program->u.integer;
fontex->sbank = (source_bank->type == json_none) ? -1 : (int)source_bank->u.integer;
fontex->dpreset = (destination_program->type == json_none) ? -1 : (int)destination_program->u.integer;
fontex->dbank = (destination_bank->type == json_none) ? 0 : (int)destination_bank->u.integer;
fontex->minchan = channel;
fontex->numchan = channelCount;
*out++ = *fontex;
}
}
static sflist_presets *sflist_process(const json_value *sflist, const char *base_path, char *error_buf) {
#ifdef _WIN32
wchar_t path16[32768];
#endif
char path_temp[32768];
const char *base_path_end = base_path + strlen(base_path) - 1;
unsigned int presets_to_allocate = 0;
sflist_presets *rval = calloc(1, sizeof(sflist_presets));
json_value *arr;
unsigned int i, j, k, l, preset_number;
HSOUNDFONT hfont = 0;
BASS_MIDI_FONTEX2 fontex;
if(!rval) {
strcpy(error_buf, "Out of memory");
goto error;
}
if(sflist->type != json_object || sflist->u.object.length != 1 ||
strcmp(sflist->u.object.values[0].name, "soundFonts")) {
if(sflist->type != json_object)
strcpy(error_buf, "Base JSON item is not an object");
else if(sflist->u.object.length != 1)
sprintf(error_buf, "Base JSON object contains unexpected number of items (wanted 1, got %u)", sflist->u.object.length);
else
sprintf(error_buf, "Base JSON object contains '%s' object instead of 'soundFonts'", sflist->u.object.values[0].name);
goto error;
}
arr = sflist->u.object.values[0].value;
if(arr->type != json_array) {
strcpy(error_buf, "JSON 'soundFonts' object is not an array");
goto error;
}
for(i = 0, j = arr->u.array.length; i < j; ++i) {
const json_value *obj = arr->u.array.values[i];
const json_value *path = 0;
const json_value *gain = 0;
const json_value *channels = 0;
const json_value *patchMappings = 0;
unsigned int patches_needed = 1;
if(obj->type != json_object) {
sprintf(error_buf, "soundFont item #%u is not an object", i + 1);
goto error;
}
path = json_object_item(obj, "fileName");
gain = json_object_item(obj, "gain");
channels = json_object_item(obj, "channels");
patchMappings = json_object_item(obj, "patchMappings");
if(path->type == json_none) {
sprintf(error_buf, "soundFont item #%u has no 'fileName'", i + 1);
goto error;
}
if(path->type != json_string) {
sprintf(error_buf, "soundFont item #%u 'fileName' is not a string", i + 1);
goto error;
}
if(gain->type != json_none && gain->type != json_integer && gain->type != json_double) {
sprintf(error_buf, "soundFont item #%u has an invalid gain value", i + 1);
goto error;
}
if(channels->type != json_none) {
if(channels->type != json_array) {
sprintf(error_buf, "soundFont item #%u 'channels' is not an array", i + 1);
goto error;
}
int prevchannel = -1;
int contiguouschannelsets = 0;
for(k = 0, l = channels->u.array.length; k < l; ++k) {
json_value *channel = channels->u.array.values[k];
if(channel->type != json_integer) {
sprintf(error_buf, "soundFont item #%u 'channels' #%u is not an integer", i + 1, k + 1);
goto error;
}
if(channel->u.integer < 1 || channel->u.integer > 48) {
sprintf(error_buf, "soundFont item #%u 'channels' #%u is out of range (wanted 1-48, got %" PRId64 ")", i + 1, k + 1, channel->u.integer);
goto error;
}
if(prevchannel < 0 || channel->u.integer > (prevchannel + 1)) {
++contiguouschannelsets;
}
prevchannel = (int)channel->u.integer;
}
patches_needed = contiguouschannelsets;
}
if(patchMappings->type != json_none) {
if(patchMappings->type != json_array) {
sprintf(error_buf, "soundFont item #%u 'patchMappings' is not an array", i + 1);
goto error;
}
for(k = 0, l = patchMappings->u.array.length; k < l; ++k) {
unsigned int m, n;
unsigned int source_found = 0;
unsigned int destination_found = 0;
json_value *mapping = patchMappings->u.array.values[k];
if(mapping->type != json_object) {
sprintf(error_buf, "soundFont item #%u 'patchMappings' #%u is not an object", i + 1, k + 1);
goto error;
}
for(m = 0, n = mapping->u.object.length; m < n; ++m) {
unsigned int o, p;
json_value *item = mapping->u.object.values[m].value;
const char *name = mapping->u.object.values[m].name;
unsigned int bank_found = 0;
unsigned int program_found = 0;
if(strcmp(name, "source") && strcmp(name, "destination")) {
sprintf(error_buf, "soundFont item #%u 'patchMappings' #%u contains an invalid '%s' field", i + 1, k + 1, name);
goto error;
}
if(item->type != json_object) {
sprintf(error_buf, "soundFont item #%u 'patchMappings' #%u '%s' is not an object", i + 1, k + 1, name);
goto error;
}
if(!strcmp(name, "source"))
++source_found;
else
++destination_found;
for(o = 0, p = item->u.object.length; o < p; ++o) {
int range_min = 0;
int range_max = 128;
json_value *item2 = item->u.object.values[o].value;
const char *name2 = item->u.object.values[o].name;
if(strcmp(name2, "bank") && strcmp(name2, "program")) {
sprintf(error_buf, "soundFont item #%u 'patchMappings' #%u '%s' contains an invalid '%s' field", i + 1, k + 1, name, name2);
goto error;
}
if(item2->type != json_integer) {
sprintf(error_buf, "soundFont item #%u 'patchMappings' #%u '%s' '%s' is not an integer", i + 1, k + 1, name, name2);
}
if(!strcmp(name2, "program")) {
if(!strcmp(name, "destination"))
range_max = 65535;
else
range_max = 127;
}
if(item2->u.integer < range_min || item2->u.integer > range_max) {
sprintf(error_buf, "soundFont item #%u 'patchMappings' #%u '%s' '%s' is out of range (expected %d-%d, got %" PRId64 ")", i + 1, k + 1, name, name2, range_min, range_max, item->u.integer);
goto error;
}
if(!strcmp(name2, "bank"))
++bank_found;
else
++program_found;
}
if(!bank_found && !program_found) {
sprintf(error_buf, "soundFont item #%u 'patchMappings' #%u '%s' contains no 'bank' or 'program'", i + 1, k + 1, name);
goto error;
}
if(bank_found > 1) {
sprintf(error_buf, "soundFont item #%u 'patchMappings' #%u '%s' contains more than one 'bank'", i + 1, k + 1, name);
goto error;
}
if(program_found > 1) {
sprintf(error_buf, "soundFont item #%u 'patchMappings' #%u '%s' contains more than one 'program'", i + 1, k + 1, name);
goto error;
}
}
if(!destination_found) {
sprintf(error_buf, "soundFont item #%u 'patchMappings' #%u is missing 'destination'", i + 1, k + 1);
goto error;
}
if(destination_found > 1) {
sprintf(error_buf, "soundFont item #%u 'patchMappings' #%u contains more than one 'destination'", i + 1, k + 1);
goto error;
}
if(source_found > 1) {
sprintf(error_buf, "soundFont item #%u 'patchMappings' #%u contains more than one 'source'", i + 1, k + 1);
}
}
patches_needed *= l;
}
presets_to_allocate += patches_needed;
}
rval->count = presets_to_allocate;
rval->presets = calloc(sizeof(BASS_MIDI_FONTEX2), rval->count);
if(!rval->presets) {
strcpy(error_buf, "Out of memory");
goto error;
}
preset_number = 0;
for(i = arr->u.array.length, j = 0; i--; ++j) {
const json_value *obj = arr->u.array.values[i];
const json_value *path = json_object_item(obj, "fileName");
const json_value *gain = json_object_item(obj, "gain");
const json_value *channels = json_object_item(obj, "channels");
const json_value *patchMappings = json_object_item(obj, "patchMappings");
const void *bass_path;
const char *path_ptr = path->u.string.ptr;
unsigned int bass_flags = 0;
#ifdef _WIN32
if(!(isalpha(*path_ptr) && path_ptr[1] == ':')) {
if(strlen(path_ptr) + (base_path_end - base_path + 2) > 32767) {
strcpy(error_buf, "Base path plus SoundFont relative path is longer than 32767 characters");
goto error;
}
strcpy(path_temp, base_path);
if(*base_path_end != '\\' && *base_path_end != '/')
strcat(path_temp, "\\");
strcat(path_temp, path_ptr);
path_ptr = path_temp;
}
MultiByteToWideChar(CP_UTF8, 0, path_ptr, -1, path16, 32767);
path16[32767] = '\0';
bass_path = (void *)path16;
bass_flags = BASS_UNICODE;
#else
if(*path_ptr != '/') {
if(strlen(path_ptr) + (base_path_end - base_path + 2) > 32767) {
strcpy(error_buf, "Base path plus SoundFont relative path is longer than 32767 characters");
goto error;
}
strcpy(path_temp, base_path);
if(*base_path_end != '/')
strcat(path_temp, "/");
strcat(path_temp, path_ptr);
path_ptr = path_temp;
}
bass_path = (void *)path_ptr;
#endif
hfont = BASS_MIDI_FontInit(bass_path, bass_flags);
if(!hfont) {
int error_code = BASS_ErrorGetCode();
if(error_code == BASS_ERROR_FILEOPEN) {
sprintf(error_buf, "Could not open SoundFont bank '%s'", path->u.string.ptr);
goto error;
} else if(error_code == BASS_ERROR_FILEFORM) {
sprintf(error_buf, "SoundFont bank '%s' is not a supported format", path->u.string.ptr);
goto error;
} else {
sprintf(error_buf, "SoundFont bank '%s' failed to load with error #%u", path->u.string.ptr, error_code);
goto error;
}
}
if(gain->type != json_none) {
double gain_value = 0.0;
if(gain->type == json_integer) {
gain_value = (double)gain->u.integer;
} else if(gain->type == json_double) {
gain_value = gain->u.dbl;
}
gain_value = pow(10.0, gain_value / 20.0);
BASS_MIDI_FontSetVolume(hfont, gain_value);
}
fontex.font = hfont;
fontex.spreset = -1;
fontex.sbank = -1;
fontex.dpreset = -1;
fontex.dbank = 0;
fontex.dbanklsb = 0;
fontex.minchan = 0;
fontex.numchan = 48;
/* Simplest case, whole bank loading */
if(channels->type == json_none && patchMappings->type == json_none) {
rval->presets[preset_number++] = fontex;
} else if(patchMappings->type == json_none) {
int prevchannel = -1;
int firstchannel = -1;
for(k = 0, l = channels->u.array.length; k < l; ++k) {
int channel = (int)channels->u.array.values[k]->u.integer;
if(firstchannel < 0) {
firstchannel = channel;
prevchannel = channel;
}
if(channel > (prevchannel + 1)) {
fontex.minchan = firstchannel;
fontex.numchan = prevchannel - firstchannel + 1;
rval->presets[preset_number++] = fontex;
firstchannel = channel;
}
prevchannel = channel;
}
fontex.minchan = firstchannel;
fontex.numchan = prevchannel - firstchannel + 1;
rval->presets[preset_number++] = fontex;
} else if(channels->type == json_none) {
sflist_process_patchmappings(rval->presets + preset_number, &fontex, patchMappings, 0, 48);
preset_number += patchMappings->u.array.length;
} else {
int prevchannel = -1;
int firstchannel = -1;
for(k = 0, l = channels->u.array.length; k < l; ++k) {
int channel = (int)channels->u.array.values[k]->u.integer;
if(firstchannel < 0) {
firstchannel = channel;
prevchannel = channel;
}
if(channel > (prevchannel + 1)) {
sflist_process_patchmappings(rval->presets + preset_number, &fontex, patchMappings, firstchannel, prevchannel - firstchannel + 1);
preset_number += patchMappings->u.array.length;
}
prevchannel = channel;
}
sflist_process_patchmappings(rval->presets + preset_number, &fontex, patchMappings, firstchannel, prevchannel - firstchannel + 1);
preset_number += patchMappings->u.array.length;
}
}
return rval;
error:
if(hfont) {
BASS_MIDI_FontFree(hfont);
}
if(rval) {
sflist_free(rval);
}
return 0;
}
static int strpbrkn_all(const char *str, size_t size, const char *chrs) {
const char *end = str + size;
while(str < end && *chrs) {
while(str < end && *str != *chrs) ++str;
++str, ++chrs;
}
return str < end;
}
sflist_presets *sflist_load(const char *sflist, size_t size, const char *base_path, char *error) {
sflist_presets *rval;
json_value *list = 0;
/* Handle Unicode byte order markers */
if(size >= 2) {
if((sflist[0] == 0xFF && sflist[1] == 0xFE) ||
(sflist[0] == 0xFE && sflist[1] == 0xFF)) {
strcpy(error, "UTF-16 encoding is not supported at this time");
return 0;
}
if(size >= 3 && sflist[0] == 0xEF &&
sflist[1] == 0xBB && sflist[2] == 0xBF) {
sflist += 3;
size -= 3;
}
}
list = sflist_load_v2(sflist, size, error);
if(!list) {
if(!strpbrkn_all(sflist, size, "{[]}"))
list = sflist_load_v1(sflist, size, error);
}
if(!list) {
return 0;
}
rval = sflist_process(list, base_path, error);
json_builder_free(list);
return rval;
}
void sflist_free(sflist_presets *presetlist) {
if(presetlist) {
if(presetlist->presets) {
unsigned int i, j;
for(i = 0, j = presetlist->count; i < j; ++i) {
HSOUNDFONT hfont = presetlist->presets[i].font;
if(hfont) {
BASS_MIDI_FontFree(hfont);
}
}
free(presetlist->presets);
}
free(presetlist);
}
}
const char *sflist_upgrade(const char *sflist, size_t size, char *error_buf) {
char *rval = 0;
json_value *list = 0;
size_t length = 0;
const json_serialize_opts opts = {
json_serialize_mode_multiline,
0,
3 /* indent_size */
};
list = sflist_load_v2(sflist, size, error_buf);
if(!list) {
if(!strpbrkn_all(sflist, size, "{[]}"))
list = sflist_load_v1(sflist, size, error_buf);
}
if(!list) {
return 0;
}
length = json_measure_ex(list, opts);
rval = (char *)malloc(length + 1);
if(!rval) {
strcpy(error_buf, "Out of memory");
goto error;
}
json_serialize_ex(rval, list, opts);
json_builder_free(list);
rval[length] = '\0';
return (const char *)rval;
error:
if(list) {
json_builder_free(list);
}
return 0;
}
void sflist_upgrade_free(const char *ptr) {
free((void *)ptr);
}
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