125 lines
2.5 KiB
C
125 lines
2.5 KiB
C
#ifndef VADPCM_H
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#define VADPCM_H
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#include <stdio.h>
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typedef signed char s8;
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typedef short s16;
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typedef int s32;
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typedef long long s64;
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typedef unsigned char u8;
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typedef unsigned short u16;
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typedef unsigned int u32;
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typedef unsigned long long u64;
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typedef float f32;
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typedef double f64;
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#ifdef __sgi
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# define BSWAP16(x)
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# define BSWAP32(x)
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# define BSWAP16_MANY(x, n)
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#else
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# define BSWAP16(x) x = __builtin_bswap16(x);
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# define BSWAP32(x) x = __builtin_bswap32(x);
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# define BSWAP16_MANY(x, n) { s32 _i; for (_i = 0; _i < n; _i++) BSWAP16((x)[_i]) }
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#endif
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#ifdef __sgi
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# define MODE_READ "r"
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# define MODE_WRITE "w"
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#else
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# define MODE_READ "rb"
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# define MODE_WRITE "wb"
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#endif
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typedef struct {
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u32 ckID;
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u32 ckSize;
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} ChunkHeader;
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typedef struct {
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u32 ckID;
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u32 ckSize;
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u32 formType;
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} Chunk;
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typedef struct {
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s16 numChannels;
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u16 numFramesH;
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u16 numFramesL;
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s16 sampleSize;
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s16 sampleRate[5]; // 80-bit float
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u16 compressionTypeH;
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u16 compressionTypeL;
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} CommonChunk;
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typedef struct {
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s16 MarkerID;
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u16 positionH;
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u16 positionL;
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} Marker;
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typedef struct {
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s16 playMode;
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s16 beginLoop;
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s16 endLoop;
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} Loop;
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typedef struct {
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s8 baseNote;
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s8 detune;
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s8 lowNote;
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s8 highNote;
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s8 lowVelocity;
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s8 highVelocity;
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s16 gain;
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Loop sustainLoop;
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Loop releaseLoop;
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} InstrumentChunk;
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typedef struct {
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s32 offset;
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s32 blockSize;
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} SoundDataChunk;
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typedef struct {
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s16 version;
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s16 order;
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s16 nEntries;
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} CodeChunk;
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typedef struct
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{
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u32 start;
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u32 end;
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u32 count;
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s16 state[16];
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} ALADPCMloop;
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// vpredictor.c
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s32 readcodebook(FILE *fhandle, s32 ****table, s32 *order, s32 *npredictors);
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s32 readaifccodebook(FILE *fhandle, s32 ****table, s16 *order, s16 *npredictors);
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s32 inner_product(s32 length, s32 *v1, s32 *v2);
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// quant.c
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s16 qsample(f32 x, s32 scale);
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void clamp(s32 fs, f32 *e, s32 *ie, s32 bits);
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s32 clip(s32 ix, s32 llevel, s32 ulevel);
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// vdecode.c
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void vdecodeframe(FILE *ifile, s32 *outp, s32 order, s32 ***coefTable);
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// vencode.c
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void vencodeframe(FILE *ofile, s16 *inBuffer, s32 *state, s32 ***coefTable, s32 order, s32 npredictors, s32 nsam);
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// util.c
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u32 readbits(u32 nbits, FILE *ifile);
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char *ReadPString(FILE *ifile);
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s32 lookupMarker(u32 *sample, s16 loopPoint, Marker *markers, s32 nmarkers);
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ALADPCMloop *readlooppoints(FILE *ifile, s16 *nloops);
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// sampleio.c
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void writeout(FILE *outfd, s32 size, s32 *l_out, s32 *r_out, s32 chans);
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#endif
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