ref: 2c4651293b18eceac8cbb39ed4d3e48667941d52
dir: /src/wav.h/
/* wav.h - various structures and defines used by WAV converter. */
#ifndef WAV_H_INCLUDED
#define WAV_H_INCLUDED
/* purloined from public Microsoft RIFF docs */
#define WAVE_FORMAT_UNKNOWN (0x0000)
#define WAVE_FORMAT_PCM (0x0001)
#define WAVE_FORMAT_ADPCM (0x0002)
#define WAVE_FORMAT_ALAW (0x0006)
#define WAVE_FORMAT_MULAW (0x0007)
#define WAVE_FORMAT_OKI_ADPCM (0x0010)
#define WAVE_FORMAT_IMA_ADPCM (0x0011)
#define WAVE_FORMAT_DIGISTD (0x0015)
#define WAVE_FORMAT_DIGIFIX (0x0016)
#define IBM_FORMAT_MULAW (0x0101)
#define IBM_FORMAT_ALAW (0x0102)
#define IBM_FORMAT_ADPCM (0x0103)
typedef struct MsState {
LONG index; /* Index into step size table */
ULONG bpred; /* Most recent sample value */
LONG sample1;
LONG sample2;
} MsState_t;
typedef struct ImaState {
int index; /* Index into step size table */
int previousValue; /* Most recent sample value */
} ImaState_t;
#endif /* WAV_H_INCLUDED */