diff options
Diffstat (limited to 'lib/alac/decomp.h')
| -rw-r--r-- | lib/alac/decomp.h | 35 |
1 files changed, 35 insertions, 0 deletions
diff --git a/lib/alac/decomp.h b/lib/alac/decomp.h new file mode 100644 index 00000000..50e26b24 --- /dev/null +++ b/lib/alac/decomp.h @@ -0,0 +1,35 @@ +#ifndef __ALAC__DECOMP_H +#define __ALAC__DECOMP_H + +typedef struct alac_file { + unsigned char *input_buffer; + int input_buffer_bitaccumulator; /* used so we can do arbitary bit reads */ + int samplesize; + int numchannels; + int bytespersample; + /* buffers */ + int32_t *predicterror_buffer_a; + int32_t *predicterror_buffer_b; + int32_t *outputsamples_buffer_a; + int32_t *outputsamples_buffer_b; + int32_t *uncompressed_bytes_buffer_a; + int32_t *uncompressed_bytes_buffer_b; + /* stuff from setinfo */ + uint32_t setinfo_max_samples_per_frame; /* 0x1000 = 4096 */ /* max samples per frame? */ + uint8_t setinfo_7a; /* 0x00 */ + uint8_t setinfo_sample_size; /* 0x10 */ + uint8_t setinfo_rice_historymult; /* 0x28 */ + uint8_t setinfo_rice_initialhistory; /* 0x0a */ + uint8_t setinfo_rice_kmodifier; /* 0x0e */ + uint8_t setinfo_7f; /* 0x02 */ + uint16_t setinfo_80; /* 0x00ff */ + uint32_t setinfo_82; /* 0x000020e7 */ /* max sample size?? */ + uint32_t setinfo_86; /* 0x00069fe4 */ /* bit rate (avarge)?? */ + uint32_t setinfo_8a_rate; /* 0x0000ac44 */ + /* end setinfo stuff */ +} alac_file; +void create_alac(alac_file *alac, int samplesize, int numchannels); +int decode_frame(alac_file *alac, unsigned char *inbuffer, void *outbuffer, int *outputsize); +void alac_set_info(alac_file *alac, char *inputbuffer); + +#endif /* __ALAC__DECOMP_H */ |