File: fmtheaders.h

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#ifndef _FMTHEADERS_H
#define _FMTHEADERS_H	1

#include <sys/types.h>

/* Definitions for .VOC files */

#define VOC_MAGIC	"Creative Voice File\032"

#define DATALEN(bp)	((u_long)(bp.BlockLen[0]) | \
                         ((u_long)(bp.BlockLen[1]) << 8) | \
                         ((u_long)(bp.BlockLen[2]) << 16) )

typedef struct vochead
  {
    u_char Magic[20];		/* must be VOC_MAGIC */
    u_short BlockOffset;	/* Offset to first block from top of file */
    u_short Version;		/* VOC-file version */
    u_short IDCode;		/* complement of version + 0x1234 */
  }
vochead;

typedef struct blockTC
  {
    u_char BlockID;
    u_char BlockLen[3];		/* low, mid, high byte of length of rest of block */
  }
blockTC;

typedef struct blockT1
  {
    u_char TimeConstant;
    u_char PackMethod;
  }
blockT1;

typedef struct blockT8
  {
    u_short TimeConstant;
    u_char PackMethod;
    u_char VoiceMode;
  }
blockT8;

typedef struct blockT9
  {
    u_int SamplesPerSec;
    u_char BitsPerSample;
    u_char Channels;
    u_short Format;
    u_char reserved[4];
  }
blockT9;



/* Definitions for Microsoft WAVE format */

/* 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 wavhead
  {
    u_long main_chunk;		/* 'RIFF' */
    u_long length;		/* Length of rest of file */
    u_long chunk_type;		/* 'WAVE' */

    u_long sub_chunk;		/* 'fmt ' */
    u_long sc_len;		/* length of sub_chunk, =16 (rest of chunk) */
    u_short format;		/* should be 1 for PCM-code */
    u_short modus;		/* 1 Mono, 2 Stereo */
    u_long sample_fq;		/* frequence of sample */
    u_long byte_p_sec;
    u_short byte_p_spl;		/* samplesize; 1 or 2 bytes */
    u_short bit_p_spl;		/* 8, 12 or 16 bit */

    u_long data_chunk;		/* 'data' */
    u_long data_length;		/* samplecount (lenth of rest of block?) */
  }
wavhead;

#endif