6f7f921ebe
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@7740 a1c6a512-1295-4272-9138-f99709370657
46 lines
1.1 KiB
C
46 lines
1.1 KiB
C
#ifndef _FLAC_DECODER_H
|
|
#define _FLAC_DECODER_H
|
|
|
|
#include "bitstream.h"
|
|
|
|
#define MAX_CHANNELS 2 /* Maximum supported channels */
|
|
#define MAX_BLOCKSIZE 4608 /* Maxsize in samples of one uncompressed frame */
|
|
#define MAX_FRAMESIZE 32768 /* Maxsize in bytes of one compressed frame */
|
|
|
|
#define FLAC_OUTPUT_DEPTH 28 /* Provide samples left-shifted to 28-bits */
|
|
|
|
enum decorrelation_type {
|
|
INDEPENDENT,
|
|
LEFT_SIDE,
|
|
RIGHT_SIDE,
|
|
MID_SIDE,
|
|
};
|
|
|
|
typedef struct FLACContext {
|
|
GetBitContext gb;
|
|
|
|
int min_blocksize, max_blocksize;
|
|
int min_framesize, max_framesize;
|
|
int samplerate, channels;
|
|
int blocksize/*, last_blocksize*/;
|
|
int bps, curr_bps;
|
|
unsigned long samplenumber;
|
|
unsigned long totalsamples;
|
|
enum decorrelation_type decorrelation;
|
|
|
|
int filesize;
|
|
int length;
|
|
int bitrate;
|
|
int metadatalength;
|
|
|
|
int bitstream_size;
|
|
int bitstream_index;
|
|
} FLACContext;
|
|
|
|
int flac_decode_frame(FLACContext *s,
|
|
int32_t* decoded0,
|
|
int32_t* decoded1,
|
|
uint8_t *buf, int buf_size,
|
|
void (*yield)(void)) ICODE_ATTR;
|
|
|
|
#endif
|