mirror of
https://github.com/alsa-project/alsa-utils
synced 2024-12-22 23:46:31 +01:00
92 lines
2.3 KiB
C
92 lines
2.3 KiB
C
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#ifndef FORMATS_H
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#define FORMATS_H 1
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#include <sys/types.h>
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/* Definitions for .VOC files */
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#define VOC_MAGIC_STRING "Creative Voice File\0x1A"
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#define VOC_ACTUAL_VERSION 0x010A
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#define VOC_SAMPLESIZE 8
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#define VOC_MODE_MONO 0
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#define VOC_MODE_STEREO 1
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#define VOC_DATALEN(bp) ((u_long)(bp->datalen) | \
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((u_long)(bp->datalen_m) << 8) | \
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((u_long)(bp->datalen_h) << 16) )
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typedef struct voc_header {
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u_char magic[20]; /* must be MAGIC_STRING */
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u_short headerlen; /* Headerlength, should be 0x1A */
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u_short version; /* VOC-file version */
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u_short coded_ver; /* 0x1233-version */
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} VocHeader;
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typedef struct voc_blocktype {
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u_char type;
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u_char datalen; /* low-byte */
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u_char datalen_m; /* medium-byte */
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u_char datalen_h; /* high-byte */
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} VocBlockType;
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typedef struct voc_voice_data {
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u_char tc;
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u_char pack;
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} VocVoiceData;
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typedef struct voc_ext_block {
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u_short tc;
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u_char pack;
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u_char mode;
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} VocExtBlock;
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/* Definitions for Microsoft WAVE format */
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#define WAV_RIFF 0x46464952
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#define WAV_WAVE 0x45564157
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#define WAV_FMT 0x20746D66
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#define WAV_DATA 0x61746164
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#define WAV_PCM_CODE 1
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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 wav_header {
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u_int main_chunk; /* 'RIFF' */
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u_int length; /* filelen */
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u_int chunk_type; /* 'WAVE' */
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u_int sub_chunk; /* 'fmt ' */
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u_int sc_len; /* length of sub_chunk, =16 */
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u_short format; /* should be 1 for PCM-code */
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u_short modus; /* 1 Mono, 2 Stereo */
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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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u_int data_chunk; /* 'data' */
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u_int data_length; /* samplecount */
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} WaveHeader;
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/* Definitions for Sparc .au header */
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#define AU_MAGIC 0x2e736e64
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#define AU_FMT_ULAW 1
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#define AU_FMT_LIN8 2
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#define AU_FMT_LIN16 3
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typedef struct au_header {
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u_int magic; /* magic '.snd' */
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u_int hdr_size; /* size of header (min 24) */
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u_int data_size; /* size of data */
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u_int encoding; /* see to AU_FMT_XXXX */
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u_int sample_rate; /* sample rate */
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u_int channels; /* number of channels (voices) */
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} AuHeader;
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#endif /* FORMATS */
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