mirror of
https://github.com/WinampDesktop/winamp.git
synced 2024-12-28 22:36:05 +00:00
62 lines
1.7 KiB
C
62 lines
1.7 KiB
C
/* copyright 2006 David Hammerton, Ben Allison */
|
|
#ifndef __ALAC__DECOMP_H
|
|
#define __ALAC__DECOMP_H
|
|
|
|
#include <bfc/platform/types.h>
|
|
#ifdef __cplusplus
|
|
extern "C" {
|
|
#endif
|
|
|
|
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 */ /* bits per sample */
|
|
uint8_t setinfo_rice_historymult; /* 0x28 */
|
|
uint8_t setinfo_rice_initialhistory; /* 0x0a */
|
|
uint8_t setinfo_rice_kmodifier; /* 0x0e */
|
|
uint8_t setinfo_7f; /* 0x02 */ /* channels? */
|
|
uint16_t setinfo_80; /* 0x00ff, 255 */
|
|
uint32_t setinfo_82; /* 0x000020e7, 8423 */ /* max sample size?? */
|
|
uint32_t setinfo_86; /* 0x00069fe4, 434148 */ /* bit rate (avarge)?? */
|
|
uint32_t setinfo_sample_rate; /* 0x0000ac44, 44100 */ /* samplerate? */
|
|
/* end setinfo stuff */
|
|
|
|
int32_t last_bitrate;
|
|
|
|
} alac_file;
|
|
|
|
|
|
alac_file *create_alac(int samplesize, int numchannels);
|
|
void decode_frame(alac_file *alac,
|
|
unsigned char *inbuffer,
|
|
void *outbuffer, int *outputsize);
|
|
void alac_set_info(alac_file *alac, char *inputbuffer);
|
|
void destroy_alac(alac_file *alac);
|
|
|
|
#ifdef __cplusplus
|
|
}
|
|
#endif
|
|
|
|
#endif /* __ALAC__DECOMP_H */
|
|
|