mirror of
https://github.com/alsa-project/alsa-utils
synced 2024-11-10 00:35:42 +01:00
91 lines
2.3 KiB
C
91 lines
2.3 KiB
C
#ifndef FORMATS_H
|
|
#define FORMATS_H 1
|
|
|
|
#include <sys/types.h>
|
|
|
|
/* Definitions for .VOC files */
|
|
|
|
#define VOC_MAGIC_STRING "Creative Voice File\0x1A"
|
|
#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 */
|
|
|
|
#define WAV_RIFF 0x46464952
|
|
#define WAV_WAVE 0x45564157
|
|
#define WAV_FMT 0x20746D66
|
|
#define WAV_DATA 0x61746164
|
|
#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 wav_header {
|
|
u_int main_chunk; /* 'RIFF' */
|
|
u_int length; /* filelen */
|
|
u_int chunk_type; /* 'WAVE' */
|
|
|
|
u_int sub_chunk; /* 'fmt ' */
|
|
u_int sc_len; /* length of sub_chunk, =16 */
|
|
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 */
|
|
|
|
u_int data_chunk; /* 'data' */
|
|
u_int data_length; /* samplecount */
|
|
} WaveHeader;
|
|
|
|
/* Definitions for Sparc .au header */
|
|
|
|
#define AU_MAGIC 0x2e736e64
|
|
|
|
#define AU_FMT_ULAW 1
|
|
#define AU_FMT_LIN8 2
|
|
#define AU_FMT_LIN16 3
|
|
|
|
typedef struct au_header {
|
|
u_int magic; /* 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 */
|