73 lines
1.9 KiB
C
73 lines
1.9 KiB
C
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#ifndef SS_WAV_H
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#define SS_WAV_H
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/*
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* ss_wav.h - routines for SpiceStream that handle the ".wav" file format
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*
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* include LICENSE
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*/
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#include <sys/types.h> /* Required by BSD derivates for u_short, u_int, etc. */
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#include <bswap.h>
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/* Definitions for Microsoft WAVE format */
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#if __BYTE_ORDER == __LITTLE_ENDIAN
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#define COMPOSE_ID(a,b,c,d) ((a) | ((b)<<8) | ((c)<<16) | ((d)<<24))
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#elif __BYTE_ORDER == __BIG_ENDIAN
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#define COMPOSE_ID(a,b,c,d) ((d) | ((c)<<8) | ((b)<<16) | ((a)<<24))
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#else
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#error "Wrong endian"
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#endif
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#define WAV_RIFF COMPOSE_ID('R','I','F','F')
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#define WAV_WAVE COMPOSE_ID('W','A','V','E')
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#define WAV_FMT COMPOSE_ID('f','m','t',' ')
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#define WAV_DATA COMPOSE_ID('d','a','t','a')
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/* WAVE fmt block constants from Microsoft mmreg.h header */
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#define WAV_FMT_PCM 0x0001
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#define WAV_FMT_IEEE_FLOAT 0x0003
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#define WAV_FMT_DOLBY_AC3_SPDIF 0x0092
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#define WAV_FMT_EXTENSIBLE 0xfffe
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/* Used with WAV_FMT_EXTENSIBLE format */
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#define WAV_GUID_TAG "\x00\x00\x00\x00\x10\x00\x80\x00\x00\xAA\x00\x38\x9B\x71"
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/*
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* it's in chunks like .voc and AMIGA iff, but my source say there
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* are in only in this combination, so I combined them in one header;
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* it works on all WAVE-file I have
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*/
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typedef struct {
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u_int magic; /* 'RIFF' */
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u_int length; /* filelen */
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u_int type; /* 'WAVE' */
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} WaveHeader;
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typedef struct {
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u_short format; /* see WAV_FMT_* */
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u_short channels;
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u_int sample_fq; /* frequence of sample */
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u_int byte_p_sec;
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u_short byte_p_spl; /* samplesize; 1 or 2 bytes */
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u_short bit_p_spl; /* 8, 12 or 16 bit */
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} WaveFmtBody;
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typedef struct {
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WaveFmtBody format;
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u_short ext_size;
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u_short bit_p_spl;
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u_int channel_mask;
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u_short guid_format; /* WAV_FMT_* */
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u_char guid_tag[14]; /* WAV_GUID_TAG */
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} WaveFmtExtensibleBody;
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typedef struct {
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u_int type; /* 'data' */
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u_int length; /* samplecount */
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} WaveChunkHeader;
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#endif /* SS_WAV_H */
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