apps/codecs/libatrac/atrac3.h

   1 #include "ffmpeg_bitstream.h"
   2 #include "../librm/rm.h"
   3
   4 #if (CONFIG_CPU == PP5022) || (CONFIG_CPU == PP5024) || (CONFIG_CPU == MCF5250)
   5 /* PP5022/24 and MCF5250 have larger IRAM */
   6 #define IBSS_ATTR_LARGE_IRAM IBSS_ATTR
   7 #else
   8 /* other CPUs IRAM is not large enough */
   9 #define IBSS_ATTR_LARGE_IRAM
  10 #endif
  11
  12 /* These structures are needed to store the parsed gain control data. */
  13 typedef struct {
  14     int   num_gain_data;
  15     int   levcode[8];
  16     int   loccode[8];
  17 } gain_info;
  18
  19 typedef struct {
  20     gain_info   gBlock[4];
  21 } gain_block;
  22
  23 typedef struct {
  24     int     pos;
  25     int     numCoefs;
  26     int32_t coef[8];
  27 } tonal_component;
  28
  29 typedef struct {
  30     int               bandsCoded;
  31     int               numComponents;
  32     tonal_component   components[64];
  33     int32_t           prevFrame[1024];
  34     int               gcBlkSwitch;
  35     gain_block        gainBlock[2];
  36
  37     int32_t           spectrum[1024] __attribute__((aligned(16)));
  38     int32_t           IMDCT_buf[1024] __attribute__((aligned(16)));
  39
  40     int32_t           delayBuf1[46]; ///<qmf delay buffers
  41     int32_t           delayBuf2[46];
  42     int32_t           delayBuf3[46];
  43 } channel_unit;
  44
  45 typedef struct {
  46     GetBitContext       gb;
  47     //@{
  48     /** stream data */
  49     int                 channels;
  50     int                 codingMode;
  51     int                 bit_rate;
  52     int                 sample_rate;
  53     int                 samples_per_channel;
  54     int                 samples_per_frame;
  55
  56     int                 bits_per_frame;
  57     int                 bytes_per_frame;
  58     int                 pBs;
  59     channel_unit*       pUnits;
  60     //@}
  61     //@{
  62     /** joint-stereo related variables */
  63     int                 matrix_coeff_index_prev[4];
  64     int                 matrix_coeff_index_now[4];
  65     int                 matrix_coeff_index_next[4];
  66     int                 weighting_delay[6];
  67     //@}
  68     //@{
  69     /** data buffers */
  70     int32_t             outSamples[2048];
  71     uint8_t             decoded_bytes_buffer[1024];
  72     int32_t             tempBuf[1070];
  73     //@}
  74     //@{
  75     /** extradata */
  76     int                 atrac3version;
  77     int                 delay;
  78     int                 scrambled_stream;
  79     int                 frame_factor;
  80     //@}
  81 } ATRAC3Context;
  82
  83 int atrac3_decode_init(ATRAC3Context *q, RMContext *rmctx);
  84
  85 int atrac3_decode_frame(RMContext *rmctx, ATRAC3Context *q,
  86                         int *data_size, const uint8_t *buf, int buf_size);
  87