//////////////////////////////////////////////////////////////////////////// // **** WAVPACK **** // // Hybrid Lossless Wavefile Compressor // // Copyright (c) 1998 - 2019 David Bryant. // // All Rights Reserved. // // Distributed under the BSD Software License (see license.txt) // //////////////////////////////////////////////////////////////////////////// // wavpack_local.h #ifndef WAVPACK_LOCAL_H #define WAVPACK_LOCAL_H #include "wavpack.h" #if defined(_WIN32) #define strdup(x) _strdup(x) #define FASTCALL __fastcall #else #define FASTCALL #endif #if defined(_WIN32) || \ (defined(BYTE_ORDER) && defined(LITTLE_ENDIAN) && (BYTE_ORDER == LITTLE_ENDIAN)) || \ (defined(__BYTE_ORDER__) && defined(__ORDER_LITTLE_ENDIAN__) && (__BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__)) #define BITSTREAM_SHORTS // use 16-bit "shorts" for reading/writing bitstreams (instead of chars) // (only works on little-endian machines) #endif #include // This header file contains all the definitions required by WavPack. #if defined(_MSC_VER) && _MSC_VER < 1600 #include typedef unsigned __int64 uint64_t; typedef unsigned __int32 uint32_t; typedef unsigned __int16 uint16_t; typedef unsigned __int8 uint8_t; typedef __int64 int64_t; typedef __int32 int32_t; typedef __int16 int16_t; typedef __int8 int8_t; #else #include #endif // Because the C99 specification states that "The order of allocation of // bit-fields within a unit (high-order to low-order or low-order to // high-order) is implementation-defined" (6.7.2.1), I decided to change // the representation of floating-point values from a structure of // bit-fields to a 32-bit integer with access macros. Note that the WavPack // library doesn't use any floating-point math to implement compression of // floating-point data (although a little floating-point math is used in // high-level functions unrelated to the codec). typedef int32_t f32; #define get_mantissa(f) ((f) & 0x7fffff) #define get_magnitude(f) ((f) & 0x7fffffff) #define get_exponent(f) (((f) >> 23) & 0xff) #define get_sign(f) (((f) >> 31) & 0x1) #define set_mantissa(f,v) (f) ^= (((f) ^ (v)) & 0x7fffff) #define set_exponent(f,v) (f) ^= (((f) ^ ((v) << 23)) & 0x7f800000) #define set_sign(f,v) (f) ^= (((f) ^ ((v) << 31)) & 0x80000000) #include #define FALSE 0 #define TRUE 1 // ID3v1 and APEv2 TAG formats (may occur at the end of WavPack files) typedef struct { char tag_id [3], title [30], artist [30], album [30]; char year [4], comment [30], genre; } ID3_Tag; typedef struct { char ID [8]; int32_t version, length, item_count, flags; char res [8]; } APE_Tag_Hdr; #define APE_Tag_Hdr_Format "8LLLL" #define APE_TAG_TYPE_TEXT 0x0 #define APE_TAG_TYPE_BINARY 0x1 #define APE_TAG_THIS_IS_HEADER 0x20000000 #define APE_TAG_CONTAINS_HEADER 0x80000000 #define APE_TAG_MAX_LENGTH (1024 * 1024 * 16) typedef struct { int64_t tag_file_pos; int tag_begins_file; ID3_Tag id3_tag; APE_Tag_Hdr ape_tag_hdr; unsigned char *ape_tag_data; } M_Tag; // or-values for "flags" #define CUR_STREAM_VERS 0x407 // universally compatible stream version //////////////////////////// WavPack Metadata ///////////////////////////////// // This is an internal representation of metadata. typedef struct { int32_t byte_length; void *data; unsigned char id; } WavpackMetadata; #define ID_UNIQUE 0x3f #define ID_OPTIONAL_DATA 0x20 #define ID_ODD_SIZE 0x40 #define ID_LARGE 0x80 #define ID_DUMMY 0x0 #define ID_ENCODER_INFO 0x1 #define ID_DECORR_TERMS 0x2 #define ID_DECORR_WEIGHTS 0x3 #define ID_DECORR_SAMPLES 0x4 #define ID_ENTROPY_VARS 0x5 #define ID_HYBRID_PROFILE 0x6 #define ID_SHAPING_WEIGHTS 0x7 #define ID_FLOAT_INFO 0x8 #define ID_INT32_INFO 0x9 #define ID_WV_BITSTREAM 0xa #define ID_WVC_BITSTREAM 0xb #define ID_WVX_BITSTREAM 0xc #define ID_CHANNEL_INFO 0xd #define ID_DSD_BLOCK 0xe #define ID_RIFF_HEADER (ID_OPTIONAL_DATA | 0x1) #define ID_RIFF_TRAILER (ID_OPTIONAL_DATA | 0x2) #define ID_ALT_HEADER (ID_OPTIONAL_DATA | 0x3) #define ID_ALT_TRAILER (ID_OPTIONAL_DATA | 0x4) #define ID_CONFIG_BLOCK (ID_OPTIONAL_DATA | 0x5) #define ID_MD5_CHECKSUM (ID_OPTIONAL_DATA | 0x6) #define ID_SAMPLE_RATE (ID_OPTIONAL_DATA | 0x7) #define ID_ALT_EXTENSION (ID_OPTIONAL_DATA | 0x8) #define ID_ALT_MD5_CHECKSUM (ID_OPTIONAL_DATA | 0x9) #define ID_NEW_CONFIG_BLOCK (ID_OPTIONAL_DATA | 0xa) #define ID_CHANNEL_IDENTITIES (ID_OPTIONAL_DATA | 0xb) #define ID_BLOCK_CHECKSUM (ID_OPTIONAL_DATA | 0xf) #define CONFIG_BYTES_STORED 3 // 1-4 bytes/sample #define CONFIG_MONO_FLAG 4 // not stereo #define CONFIG_FLOAT_DATA 0x80 // ieee 32-bit floating point data #define CONFIG_AUTO_SHAPING 0x4000 // automatic noise shaping #define CONFIG_LOSSY_MODE 0x1000000 // obsolete (for information) /* * These config flags were never actually used, or are no longer used, or are * used for something else now. They may be used in the future for what they * say, or for something else. WavPack files in the wild *may* have some of * these bit set in their config flags (with these older meanings), but only * if the stream version is 0x410 or less than 0x407. Of course, this is not * very important because once the file has been encoded, the config bits are * just for information purposes (i.e., they do not affect decoding), * #define CONFIG_ADOBE_MODE 0x100 // "adobe" mode for 32-bit floats #define CONFIG_VERY_FAST_FLAG 0x400 // double fast #define CONFIG_COPY_TIME 0x20000 // copy file-time from source #define CONFIG_QUALITY_MODE 0x200000 // psychoacoustic quality mode #define CONFIG_RAW_FLAG 0x400000 // raw mode (not implemented yet) #define CONFIG_QUIET_MODE 0x10000000 // don't report progress % #define CONFIG_IGNORE_LENGTH 0x20000000 // ignore length in wav header #define CONFIG_NEW_RIFF_HEADER 0x40000000 // generate new RIFF wav header * */ #define EXTRA_SCAN_ONLY 1 #define EXTRA_STEREO_MODES 2 #define EXTRA_TRY_DELTAS 8 #define EXTRA_ADJUST_DELTAS 16 #define EXTRA_SORT_FIRST 32 #define EXTRA_BRANCHES 0x1c0 #define EXTRA_SKIP_8TO16 512 #define EXTRA_TERMS 0x3c00 #define EXTRA_DUMP_TERMS 16384 #define EXTRA_SORT_LAST 32768 //////////////////////////////// WavPack Stream /////////////////////////////// // This internal structure contains everything required to handle a WavPack // "stream", which is defined as a stereo or mono stream of audio samples. For // multichannel audio several of these would be required. Each stream contains // pointers to hold a complete allocated block of WavPack data, although it's // possible to decode WavPack blocks without buffering an entire block. typedef struct bs { #ifdef BITSTREAM_SHORTS uint16_t *buf, *end, *ptr; #else unsigned char *buf, *end, *ptr; #endif void (*wrap)(struct bs *bs); int error, bc; uint32_t sr; } Bitstream; #define MAX_WRAPPER_BYTES 16777216 #define NEW_MAX_STREAMS 4096 #define OLD_MAX_STREAMS 8 #define MAX_NTERMS 16 #define MAX_TERM 8 // DSD-specific definitions #define MAX_HISTORY_BITS 5 // maximum number of history bits in DSD "fast" mode // note that 5 history bits requires 32 history bins #define MAX_BYTES_PER_BIN 1280 // maximum bytes for the value lookup array (per bin) // such that the total storage per bin = 2K (also // counting probabilities and summed_probabilities) // Note that this structure is directly accessed in assembly files, so modify with care struct decorr_pass { int32_t term, delta, weight_A, weight_B; int32_t samples_A [MAX_TERM], samples_B [MAX_TERM]; int32_t aweight_A, aweight_B; int32_t sum_A, sum_B; }; typedef struct { signed char joint_stereo, delta, terms [MAX_NTERMS+1]; } WavpackDecorrSpec; struct entropy_data { uint32_t median [3], slow_level, error_limit; }; struct words_data { uint32_t bitrate_delta [2], bitrate_acc [2]; uint32_t pend_data, holding_one, zeros_acc; int holding_zero, pend_count; struct entropy_data c [2]; }; typedef struct { int32_t value, filter0, filter1, filter2, filter3, filter4, filter5, filter6, factor, byte; } DSDfilters; typedef struct { WavpackHeader wphdr; struct words_data w; unsigned char *blockbuff, *blockend; unsigned char *block2buff, *block2end; int32_t *sample_buffer; int64_t sample_index; int bits, num_terms, mute_error, joint_stereo, false_stereo, shift; int num_decorrs, num_passes, best_decorr, mask_decorr; uint32_t crc, crc_x, crc_wvx; Bitstream wvbits, wvcbits, wvxbits; int init_done, wvc_skip; float delta_decay; unsigned char int32_sent_bits, int32_zeros, int32_ones, int32_dups; unsigned char float_flags, float_shift, float_max_exp, float_norm_exp; struct { int32_t shaping_acc [2], shaping_delta [2], error [2]; double noise_sum, noise_ave, noise_max; int16_t *shaping_data, *shaping_array; int32_t shaping_samples; } dc; struct decorr_pass decorr_passes [MAX_NTERMS], analysis_pass; const WavpackDecorrSpec *decorr_specs; struct { unsigned char *byteptr, *endptr, (*probabilities) [256], *lookup_buffer, **value_lookup, mode, ready; int history_bins, p0, p1; int16_t (*summed_probabilities) [256]; uint32_t low, high, value; DSDfilters filters [2]; int32_t *ptable; } dsd; } WavpackStream; // flags for float_flags: #define FLOAT_SHIFT_ONES 1 // bits left-shifted into float = '1' #define FLOAT_SHIFT_SAME 2 // bits left-shifted into float are the same #define FLOAT_SHIFT_SENT 4 // bits shifted into float are sent literally #define FLOAT_ZEROS_SENT 8 // "zeros" are not all real zeros #define FLOAT_NEG_ZEROS 0x10 // contains negative zeros #define FLOAT_EXCEPTIONS 0x20 // contains exceptions (inf, nan, etc.) /////////////////////////////// WavPack Context /////////////////////////////// // This internal structure holds everything required to encode or decode WavPack // files. It is recommended that direct access to this structure be minimized // and the provided utilities used instead. struct WavpackContext { WavpackConfig config; WavpackMetadata *metadata; uint32_t metabytes; int metacount; unsigned char *wrapper_data; uint32_t wrapper_bytes; WavpackBlockOutput blockout; void *wv_out, *wvc_out; WavpackStreamReader64 *reader; void *wv_in, *wvc_in; int64_t filelen, file2len, filepos, file2pos, total_samples, initial_index; uint32_t crc_errors, first_flags; int wvc_flag, open_flags, norm_offset, reduced_channels, lossy_blocks, version_five; uint32_t block_samples, ave_block_samples, block_boundary, max_samples, acc_samples, riff_trailer_bytes; int riff_header_added, riff_header_created; M_Tag m_tag; int current_stream, num_streams, max_streams, stream_version; WavpackStream **streams; void *stream3; // these items were added in 5.0 to support alternate file types (especially CAF & DSD) unsigned char file_format, *channel_reordering, *channel_identities; uint32_t channel_layout, dsd_multiplier; void *decimation_context; char file_extension [8]; void (*close_callback)(void *wpc); char error_message [80]; }; //////////////////////// function prototypes and macros ////////////////////// #define CLEAR(destin) memset (&destin, 0, sizeof (destin)); //////////////////////////////// decorrelation ////////////////////////////// // modules: pack.c, unpack.c, unpack_floats.c, extra1.c, extra2.c // #define SKIP_DECORRELATION // experimental switch to disable all decorrelation on encode // These macros implement the weight application and update operations // that are at the heart of the decorrelation loops. Note that there are // sometimes two and even three versions of each macro. Theses should be // equivalent and produce identical results, but some may perform better // or worse on a given architecture. #if 1 // PERFCOND - apply decorrelation weight when no 32-bit overflow possible #define apply_weight_i(weight, sample) ((weight * sample + 512) >> 10) #else #define apply_weight_i(weight, sample) ((((weight * sample) >> 8) + 2) >> 2) #endif #if 1 // PERFCOND - apply decorrelation weight when 32-bit overflow is possible #define apply_weight_f(weight, sample) (((((sample & 0xffff) * weight) >> 9) + \ (((sample & ~0xffff) >> 9) * weight) + 1) >> 1) #elif 1 #define apply_weight_f(weight, sample) ((int32_t)((weight * (int64_t) sample + 512) >> 10)) #else #define apply_weight_f(weight, sample) ((int32_t)floor(((double) weight * sample + 512.0) / 1024.0)) #endif #if 1 // PERFCOND - universal version that checks input magnitude or always uses long version #define apply_weight(weight, sample) (sample != (int16_t) sample ? \ apply_weight_f (weight, sample) : apply_weight_i (weight, sample)) #else #define apply_weight(weight, sample) (apply_weight_f (weight, sample)) #endif #if 1 // PERFCOND #define update_weight(weight, delta, source, result) \ if (source && result) { int32_t s = (int32_t) (source ^ result) >> 31; weight = (delta ^ s) + (weight - s); } #elif 1 #define update_weight(weight, delta, source, result) \ if (source && result) weight += (((source ^ result) >> 30) | 1) * delta; #else #define update_weight(weight, delta, source, result) \ if (source && result) (source ^ result) < 0 ? (weight -= delta) : (weight += delta); #endif #define update_weight_clip(weight, delta, source, result) \ if (source && result) { \ const int32_t s = (source ^ result) >> 31; \ if ((weight = (weight ^ s) + (delta - s)) > 1024) weight = 1024; \ weight = (weight ^ s) - s; \ } void pack_init (WavpackContext *wpc); int pack_block (WavpackContext *wpc, int32_t *buffer); void send_general_metadata (WavpackContext *wpc); void free_metadata (WavpackMetadata *wpmd); int copy_metadata (WavpackMetadata *wpmd, unsigned char *buffer_start, unsigned char *buffer_end); double WavpackGetEncodedNoise (WavpackContext *wpc, double *peak); int unpack_init (WavpackContext *wpc); int read_decorr_terms (WavpackStream *wps, WavpackMetadata *wpmd); int read_decorr_weights (WavpackStream *wps, WavpackMetadata *wpmd); int read_decorr_samples (WavpackStream *wps, WavpackMetadata *wpmd); int read_shaping_info (WavpackStream *wps, WavpackMetadata *wpmd); int32_t unpack_samples (WavpackContext *wpc, int32_t *buffer, uint32_t sample_count); int check_crc_error (WavpackContext *wpc); int scan_float_data (WavpackStream *wps, f32 *values, int32_t num_values); void send_float_data (WavpackStream *wps, f32 *values, int32_t num_values); void float_values (WavpackStream *wps, int32_t *values, int32_t num_values); void dynamic_noise_shaping (WavpackContext *wpc, int32_t *buffer, int shortening_allowed); void execute_stereo (WavpackContext *wpc, int32_t *samples, int no_history, int do_samples); void execute_mono (WavpackContext *wpc, int32_t *samples, int no_history, int do_samples); ////////////////////////// DSD related (including decimation) ////////////////////////// // modules: pack_dsd.c unpack_dsd.c void pack_dsd_init (WavpackContext *wpc); int pack_dsd_block (WavpackContext *wpc, int32_t *buffer); int init_dsd_block (WavpackContext *wpc, WavpackMetadata *wpmd); int32_t unpack_dsd_samples (WavpackContext *wpc, int32_t *buffer, uint32_t sample_count); void *decimate_dsd_init (int num_channels); void decimate_dsd_reset (void *decimate_context); void decimate_dsd_run (void *decimate_context, int32_t *samples, int num_samples); void decimate_dsd_destroy (void *decimate_context); ///////////////////////////////// CPU feature detection //////////////////////////////// int unpack_cpu_has_feature_x86 (int findex), pack_cpu_has_feature_x86 (int findex); #define CPU_FEATURE_MMX 23 ///////////////////////////// pre-4.0 version decoding //////////////////////////// // modules: unpack3.c, unpack3_open.c, unpack3_seek.c WavpackContext *open_file3 (WavpackContext *wpc, char *error); int32_t unpack_samples3 (WavpackContext *wpc, int32_t *buffer, uint32_t sample_count); int seek_sample3 (WavpackContext *wpc, uint32_t desired_index); uint32_t get_sample_index3 (WavpackContext *wpc); void free_stream3 (WavpackContext *wpc); int get_version3 (WavpackContext *wpc); ////////////////////////////// bitstream macros & functions ///////////////////////////// #define bs_is_open(bs) ((bs)->ptr != NULL) uint32_t bs_close_read (Bitstream *bs); #define getbit(bs) ( \ (((bs)->bc) ? \ ((bs)->bc--, (bs)->sr & 1) : \ (((++((bs)->ptr) != (bs)->end) ? (void) 0 : (bs)->wrap (bs)), (bs)->bc = sizeof (*((bs)->ptr)) * 8 - 1, ((bs)->sr = *((bs)->ptr)) & 1) \ ) ? \ ((bs)->sr >>= 1, 1) : \ ((bs)->sr >>= 1, 0) \ ) #define getbits(value, nbits, bs) do { \ while ((nbits) > (bs)->bc) { \ if (++((bs)->ptr) == (bs)->end) (bs)->wrap (bs); \ (bs)->sr |= (int32_t)*((bs)->ptr) << (bs)->bc; \ (bs)->bc += sizeof (*((bs)->ptr)) * 8; \ } \ *(value) = (bs)->sr; \ if ((bs)->bc > 32) { \ (bs)->bc -= (nbits); \ (bs)->sr = *((bs)->ptr) >> (sizeof (*((bs)->ptr)) * 8 - (bs)->bc); \ } \ else { \ (bs)->bc -= (nbits); \ (bs)->sr >>= (nbits); \ } \ } while (0) #define putbit(bit, bs) do { if (bit) (bs)->sr |= (1 << (bs)->bc); \ if (++((bs)->bc) == sizeof (*((bs)->ptr)) * 8) { \ *((bs)->ptr) = (bs)->sr; \ (bs)->sr = (bs)->bc = 0; \ if (++((bs)->ptr) == (bs)->end) (bs)->wrap (bs); \ }} while (0) #define putbit_0(bs) do { \ if (++((bs)->bc) == sizeof (*((bs)->ptr)) * 8) { \ *((bs)->ptr) = (bs)->sr; \ (bs)->sr = (bs)->bc = 0; \ if (++((bs)->ptr) == (bs)->end) (bs)->wrap (bs); \ }} while (0) #define putbit_1(bs) do { (bs)->sr |= (1 << (bs)->bc); \ if (++((bs)->bc) == sizeof (*((bs)->ptr)) * 8) { \ *((bs)->ptr) = (bs)->sr; \ (bs)->sr = (bs)->bc = 0; \ if (++((bs)->ptr) == (bs)->end) (bs)->wrap (bs); \ }} while (0) #define putbits(value, nbits, bs) do { \ (bs)->sr |= (int32_t)(value) << (bs)->bc; \ if (((bs)->bc += (nbits)) >= sizeof (*((bs)->ptr)) * 8) \ do { \ *((bs)->ptr) = (bs)->sr; \ (bs)->sr >>= sizeof (*((bs)->ptr)) * 8; \ if (((bs)->bc -= sizeof (*((bs)->ptr)) * 8) > 32 - sizeof (*((bs)->ptr)) * 8) \ (bs)->sr |= ((value) >> ((nbits) - (bs)->bc)); \ if (++((bs)->ptr) == (bs)->end) (bs)->wrap (bs); \ } while ((bs)->bc >= sizeof (*((bs)->ptr)) * 8); \ } while (0) ///////////////////////////// entropy encoder / decoder //////////////////////////// // modules: entropy_utils.c, read_words.c, write_words.c // these control the time constant "slow_level" which is used for hybrid mode // that controls bitrate as a function of residual level (HYBRID_BITRATE). #define SLS 8 #define SLO ((1 << (SLS - 1))) #define LIMIT_ONES 16 // maximum consecutive 1s sent for "div" data // these control the time constant of the 3 median level breakpoints #define DIV0 128 // 5/7 of samples #define DIV1 64 // 10/49 of samples #define DIV2 32 // 20/343 of samples // this macro retrieves the specified median breakpoint (without frac; min = 1) #define GET_MED(med) (((c->median [med]) >> 4) + 1) // These macros update the specified median breakpoints. Note that the median // is incremented when the sample is higher than the median, else decremented. // They are designed so that the median will never drop below 1 and the value // is essentially stationary if there are 2 increments for every 5 decrements. #define INC_MED0() (c->median [0] += ((c->median [0] + DIV0) / DIV0) * 5) #define DEC_MED0() (c->median [0] -= ((c->median [0] + (DIV0-2)) / DIV0) * 2) #define INC_MED1() (c->median [1] += ((c->median [1] + DIV1) / DIV1) * 5) #define DEC_MED1() (c->median [1] -= ((c->median [1] + (DIV1-2)) / DIV1) * 2) #define INC_MED2() (c->median [2] += ((c->median [2] + DIV2) / DIV2) * 5) #define DEC_MED2() (c->median [2] -= ((c->median [2] + (DIV2-2)) / DIV2) * 2) #ifdef HAVE___BUILTIN_CLZ #define count_bits(av) ((av) ? 32 - __builtin_clz (av) : 0) #elif defined (_WIN64) static __inline int count_bits (uint32_t av) { unsigned long res; return _BitScanReverse (&res, av) ? (int)(res + 1) : 0; } #else #define count_bits(av) ( \ (av) < (1 << 8) ? nbits_table [av] : \ ( \ (av) < (1L << 16) ? nbits_table [(av) >> 8] + 8 : \ ((av) < (1L << 24) ? nbits_table [(av) >> 16] + 16 : nbits_table [(av) >> 24] + 24) \ ) \ ) #endif void init_words (WavpackStream *wps); void write_entropy_vars (WavpackStream *wps, WavpackMetadata *wpmd); void write_hybrid_profile (WavpackStream *wps, WavpackMetadata *wpmd); int read_entropy_vars (WavpackStream *wps, WavpackMetadata *wpmd); int read_hybrid_profile (WavpackStream *wps, WavpackMetadata *wpmd); int32_t FASTCALL send_word (WavpackStream *wps, int32_t value, int chan); void send_words_lossless (WavpackStream *wps, int32_t *buffer, int32_t nsamples); int32_t FASTCALL get_word (WavpackStream *wps, int chan, int32_t *correction); int32_t get_words_lossless (WavpackStream *wps, int32_t *buffer, int32_t nsamples); void flush_word (WavpackStream *wps); int32_t nosend_word (WavpackStream *wps, int32_t value, int chan); void scan_word (WavpackStream *wps, int32_t *samples, uint32_t num_samples, int dir); void update_error_limit (WavpackStream *wps); extern const uint32_t bitset [32]; extern const uint32_t bitmask [32]; extern const char nbits_table [256]; int wp_log2s (int32_t value); int32_t wp_exp2s (int log); int FASTCALL wp_log2 (uint32_t avalue); #ifdef OPT_ASM_X86 #define LOG2BUFFER log2buffer_x86 #elif defined(OPT_ASM_X64) && (defined (_WIN64) || defined(__CYGWIN__) || defined(__MINGW64__) || defined(__midipix__)) #define LOG2BUFFER log2buffer_x64win #elif defined(OPT_ASM_X64) #define LOG2BUFFER log2buffer_x64 #else #define LOG2BUFFER log2buffer #endif uint32_t LOG2BUFFER (int32_t *samples, uint32_t num_samples, int limit); signed char store_weight (int weight); int restore_weight (signed char weight); #define WORD_EOF ((int32_t)(1L << 31)) void WavpackFloatNormalize (int32_t *values, int32_t num_values, int delta_exp); /////////////////////////// high-level unpacking API and support //////////////////////////// // modules: open_utils.c, unpack_utils.c, unpack_seek.c, unpack_floats.c WavpackContext *WavpackOpenFileInputEx64 (WavpackStreamReader64 *reader, void *wv_id, void *wvc_id, char *error, int flags, int norm_offset); WavpackContext *WavpackOpenFileInputEx (WavpackStreamReader *reader, void *wv_id, void *wvc_id, char *error, int flags, int norm_offset); WavpackContext *WavpackOpenFileInput (const char *infilename, char *error, int flags, int norm_offset); #define OPEN_WVC 0x1 // open/read "correction" file #define OPEN_TAGS 0x2 // read ID3v1 / APEv2 tags (seekable file) #define OPEN_WRAPPER 0x4 // make audio wrapper available (i.e. RIFF) #define OPEN_2CH_MAX 0x8 // open multichannel as stereo (no downmix) #define OPEN_NORMALIZE 0x10 // normalize floating point data to +/- 1.0 #define OPEN_STREAMING 0x20 // "streaming" mode blindly unpacks blocks // w/o regard to header file position info #define OPEN_EDIT_TAGS 0x40 // allow editing of tags #define OPEN_FILE_UTF8 0x80 // assume filenames are UTF-8 encoded, not ANSI (Windows only) // new for version 5 #define OPEN_DSD_NATIVE 0x100 // open DSD files as bitstreams // (returned as 8-bit "samples" stored in 32-bit words) #define OPEN_DSD_AS_PCM 0x200 // open DSD files as 24-bit PCM (decimated 8x) #define OPEN_ALT_TYPES 0x400 // application is aware of alternate file types & qmode // (just affects retrieving wrappers & MD5 checksums) #define OPEN_NO_CHECKSUM 0x800 // don't verify block checksums before decoding int WavpackGetMode (WavpackContext *wpc); int WavpackGetQualifyMode (WavpackContext *wpc); int WavpackGetVersion (WavpackContext *wpc); uint32_t WavpackUnpackSamples (WavpackContext *wpc, int32_t *buffer, uint32_t samples); int WavpackSeekSample (WavpackContext *wpc, uint32_t sample); int WavpackSeekSample64 (WavpackContext *wpc, int64_t sample); int WavpackGetMD5Sum (WavpackContext *wpc, unsigned char data [16]); int WavpackVerifySingleBlock (unsigned char *buffer, int verify_checksum); uint32_t read_next_header (WavpackStreamReader64 *reader, void *id, WavpackHeader *wphdr); int read_wvc_block (WavpackContext *wpc); /////////////////////////// high-level packing API and support //////////////////////////// // modules: pack_utils.c, pack_floats.c WavpackContext *WavpackOpenFileOutput (WavpackBlockOutput blockout, void *wv_id, void *wvc_id); int WavpackSetConfiguration (WavpackContext *wpc, WavpackConfig *config, uint32_t total_samples); int WavpackSetConfiguration64 (WavpackContext *wpc, WavpackConfig *config, int64_t total_samples, const unsigned char *chan_ids); int WavpackPackInit (WavpackContext *wpc); int WavpackAddWrapper (WavpackContext *wpc, void *data, uint32_t bcount); int WavpackPackSamples (WavpackContext *wpc, int32_t *sample_buffer, uint32_t sample_count); int WavpackFlushSamples (WavpackContext *wpc); int WavpackStoreMD5Sum (WavpackContext *wpc, unsigned char data [16]); void WavpackSeekTrailingWrapper (WavpackContext *wpc); void WavpackUpdateNumSamples (WavpackContext *wpc, void *first_block); void *WavpackGetWrapperLocation (void *first_block, uint32_t *size); /////////////////////////////////// common utilities //////////////////////////////////// // module: common_utils.c extern const uint32_t sample_rates [16]; uint32_t WavpackGetLibraryVersion (void); const char *WavpackGetLibraryVersionString (void); uint32_t WavpackGetSampleRate (WavpackContext *wpc); int WavpackGetBitsPerSample (WavpackContext *wpc); int WavpackGetBytesPerSample (WavpackContext *wpc); int WavpackGetNumChannels (WavpackContext *wpc); int WavpackGetChannelMask (WavpackContext *wpc); int WavpackGetReducedChannels (WavpackContext *wpc); int WavpackGetFloatNormExp (WavpackContext *wpc); uint32_t WavpackGetNumSamples (WavpackContext *wpc); int64_t WavpackGetNumSamples64 (WavpackContext *wpc); uint32_t WavpackGetSampleIndex (WavpackContext *wpc); int64_t WavpackGetSampleIndex64 (WavpackContext *wpc); char *WavpackGetErrorMessage (WavpackContext *wpc); int WavpackGetNumErrors (WavpackContext *wpc); int WavpackLossyBlocks (WavpackContext *wpc); uint32_t WavpackGetWrapperBytes (WavpackContext *wpc); unsigned char *WavpackGetWrapperData (WavpackContext *wpc); void WavpackFreeWrapper (WavpackContext *wpc); double WavpackGetProgress (WavpackContext *wpc); uint32_t WavpackGetFileSize (WavpackContext *wpc); int64_t WavpackGetFileSize64 (WavpackContext *wpc); double WavpackGetRatio (WavpackContext *wpc); double WavpackGetAverageBitrate (WavpackContext *wpc, int count_wvc); double WavpackGetInstantBitrate (WavpackContext *wpc); WavpackContext *WavpackCloseFile (WavpackContext *wpc); void WavpackLittleEndianToNative (void *data, char *format); void WavpackNativeToLittleEndian (void *data, char *format); void WavpackBigEndianToNative (void *data, char *format); void WavpackNativeToBigEndian (void *data, char *format); void install_close_callback (WavpackContext *wpc, void cb_func (void *wpc)); void free_dsd_tables (WavpackStream *wps); void free_streams (WavpackContext *wpc); /////////////////////////////////// tag utilities //////////////////////////////////// // modules: tags.c, tag_utils.c int WavpackGetNumTagItems (WavpackContext *wpc); int WavpackGetTagItem (WavpackContext *wpc, const char *item, char *value, int size); int WavpackGetTagItemIndexed (WavpackContext *wpc, int index, char *item, int size); int WavpackGetNumBinaryTagItems (WavpackContext *wpc); int WavpackGetBinaryTagItem (WavpackContext *wpc, const char *item, char *value, int size); int WavpackGetBinaryTagItemIndexed (WavpackContext *wpc, int index, char *item, int size); int WavpackAppendTagItem (WavpackContext *wpc, const char *item, const char *value, int vsize); int WavpackAppendBinaryTagItem (WavpackContext *wpc, const char *item, const char *value, int vsize); int WavpackDeleteTagItem (WavpackContext *wpc, const char *item); int WavpackWriteTag (WavpackContext *wpc); int load_tag (WavpackContext *wpc); void free_tag (M_Tag *m_tag); int valid_tag (M_Tag *m_tag); int editable_tag (M_Tag *m_tag); #endif