flacdecoder.h

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#ifndef _FLAC_DECODER_H
#define _FLAC_DECODER_H
 
#include "bitstreamf.h"


enum decorrelation_type {
    INDEPENDENT,
    LEFT_SIDE,
    RIGHT_SIDE,
    MID_SIDE,
};

typedef struct FLACContext 
{
    GetBitContext gb;

    int min_blocksize, max_blocksize;   //block的最小/最大采样数
    int min_framesize, max_framesize;   //最小/最大帧大小
    int samplerate, channels;           //采样率和通道数
    int blocksize;                      // last_blocksize
    int bps, curr_bps;
    unsigned long samplenumber;
    unsigned long totalsamples;
    enum decorrelation_type decorrelation;  

    int seektable;
    int seekpoints;

    int bitstream_size;
    int bitstream_index;

    int sample_skip;
    int framesize;

    int *decoded0;  // channel 0
    int *decoded1;  // channel 1
}FLACContext;

int flac_decode_frame24(FLACContext *s, uint8_t *buf, int buf_size, int32_t *wavbuf);
int flac_decode_frame16(FLACContext *s, uint8_t *buf, int buf_size, int16_t *wavbuf);
int flac_seek_frame(uint8_t *buf,uint32_t size,FLACContext * fc);
#endif