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Sourcecode: alsa-utils version File versions

formats.h

#ifndef FORMATS_H
#define FORMATS_H       1

#include <endian.h>
#include <byteswap.h>

/* Definitions for .VOC files */

#define VOC_MAGIC_STRING      "Creative Voice File\x1A"
#define VOC_ACTUAL_VERSION    0x010A
#define VOC_SAMPLESIZE        8

#define VOC_MODE_MONO         0
#define VOC_MODE_STEREO       1

#define VOC_DATALEN(bp)       ((u_long)(bp->datalen) | \
                              ((u_long)(bp->datalen_m) << 8) | \
                              ((u_long)(bp->datalen_h) << 16) )

typedef struct voc_header {
      u_char magic[20]; /* must be MAGIC_STRING */
      u_short headerlen;      /* Headerlength, should be 0x1A */
      u_short version;  /* VOC-file version */
      u_short coded_ver;      /* 0x1233-version */
} VocHeader;

typedef struct voc_blocktype {
      u_char type;
      u_char datalen;         /* low-byte    */
      u_char datalen_m; /* medium-byte */
      u_char datalen_h; /* high-byte   */
} VocBlockType;

typedef struct voc_voice_data {
      u_char tc;
      u_char pack;
} VocVoiceData;

typedef struct voc_ext_block {
      u_short tc;
      u_char pack;
      u_char mode;
} VocExtBlock;

/* Definitions for Microsoft WAVE format */

#if __BYTE_ORDER == __LITTLE_ENDIAN
#define COMPOSE_ID(a,b,c,d)   ((a) | ((b)<<8) | ((c)<<16) | ((d)<<24))
#define LE_SHORT(v)           (v)
#define LE_INT(v)       (v)
#define BE_SHORT(v)           bswap_16(v)
#define BE_INT(v)       bswap_32(v)
#elif __BYTE_ORDER == __BIG_ENDIAN
#define COMPOSE_ID(a,b,c,d)   ((d) | ((c)<<8) | ((b)<<16) | ((a)<<24))
#define LE_SHORT(v)           bswap_16(v)
#define LE_INT(v)       bswap_32(v)
#define BE_SHORT(v)           (v)
#define BE_INT(v)       (v)
#else
#error "Wrong endian"
#endif

#define WAV_RIFF        COMPOSE_ID('R','I','F','F')
#define WAV_WAVE        COMPOSE_ID('W','A','V','E')
#define WAV_FMT               COMPOSE_ID('f','m','t',' ')
#define WAV_DATA        COMPOSE_ID('d','a','t','a')
#define WAV_PCM_CODE          1

/* it's in chunks like .voc and AMIGA iff, but my source say there
   are in only in this combination, so I combined them in one header;
   it works on all WAVE-file I have
 */
typedef struct {
      u_int magic;            /* 'RIFF' */
      u_int length;           /* filelen */
      u_int type;       /* 'WAVE' */
} WaveHeader;

typedef struct {
      u_short format;         /* should be 1 for PCM-code */
      u_short modus;          /* 1 Mono, 2 Stereo */
      u_int sample_fq;  /* frequence of sample */
      u_int byte_p_sec;
      u_short byte_p_spl;     /* samplesize; 1 or 2 bytes */
      u_short bit_p_spl;      /* 8, 12 or 16 bit */
} WaveFmtBody;

typedef struct {
      u_int type;       /* 'data' */
      u_int length;           /* samplecount */
} WaveChunkHeader;

/* Definitions for Sparc .au header */

#define AU_MAGIC        COMPOSE_ID('.','s','n','d')

#define AU_FMT_ULAW           1
#define AU_FMT_LIN8           2
#define AU_FMT_LIN16          3

typedef struct au_header {
      u_int magic;            /* '.snd' */
      u_int hdr_size;         /* size of header (min 24) */
      u_int data_size;  /* size of data */
      u_int encoding;         /* see to AU_FMT_XXXX */
      u_int sample_rate;      /* sample rate */
      u_int channels;         /* number of channels (voices) */
} AuHeader;

#endif                        /* FORMATS */

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