apps/codecs/libffmpegFLAC/decoder.h

   1 #ifndef _FLAC_DECODER_H
   2 #define _FLAC_DECODER_H
   3
   4 #include "bitstream.h"
   5
   6 #define MAX_CHANNELS 2       /* Maximum supported channels */
   7 #define MAX_BLOCKSIZE 4608   /* Maxsize in samples of one uncompressed frame */
   8 #define MAX_FRAMESIZE 32768  /* Maxsize in bytes of one compressed frame */
   9
  10 #define FLAC_OUTPUT_DEPTH 29 /* Provide samples left-shifted to 28 bits+sign */
  11
  12 enum decorrelation_type {
  13     INDEPENDENT,
  14     LEFT_SIDE,
  15     RIGHT_SIDE,
  16     MID_SIDE,
  17 };
  18
  19 typedef struct FLACContext {
  20     GetBitContext gb;
  21
  22     int min_blocksize, max_blocksize;
  23     int min_framesize, max_framesize;
  24     int samplerate, channels;
  25     int blocksize/*, last_blocksize*/;
  26     int bps, curr_bps;
  27     unsigned long samplenumber;
  28     unsigned long totalsamples;
  29     enum decorrelation_type decorrelation;
  30
  31     int filesize;
  32     int length;
  33     int bitrate;
  34     int metadatalength;
  35
  36     int bitstream_size;
  37     int bitstream_index;
  38
  39     int sample_skip;
  40     int framesize;
  41 } FLACContext;
  42
  43 int flac_decode_frame(FLACContext *s,
  44                       int32_t* decoded0,
  45                       int32_t* decoded1,
  46                       uint8_t *buf, int buf_size,
  47                       void (*yield)(void)) ICODE_ATTR_FLAC;
  48
  49 #endif