aa24b677e0
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@22341 a1c6a512-1295-4272-9138-f99709370657
80 lines
2.2 KiB
C
80 lines
2.2 KiB
C
#include "ffmpeg_bitstream.h"
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#include "../librm/rm.h"
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/* These structures are needed to store the parsed gain control data. */
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typedef struct {
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int num_gain_data;
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int levcode[8];
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int loccode[8];
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} gain_info;
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typedef struct {
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gain_info gBlock[4];
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} gain_block;
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typedef struct {
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int pos;
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int numCoefs;
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int32_t coef[8];
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} tonal_component;
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typedef struct {
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int bandsCoded;
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int numComponents;
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tonal_component components[64];
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int32_t prevFrame[1024];
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int gcBlkSwitch;
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gain_block gainBlock[2];
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int32_t spectrum[1024] __attribute__((aligned(16)));
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int32_t IMDCT_buf[1024] __attribute__((aligned(16)));
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int32_t delayBuf1[46]; ///<qmf delay buffers
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int32_t delayBuf2[46];
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int32_t delayBuf3[46];
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} channel_unit;
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typedef struct {
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GetBitContext gb;
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//@{
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/** stream data */
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int channels;
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int codingMode;
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int bit_rate;
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int sample_rate;
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int samples_per_channel;
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int samples_per_frame;
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int bits_per_frame;
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int bytes_per_frame;
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int pBs;
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channel_unit* pUnits;
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//@}
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//@{
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/** joint-stereo related variables */
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int matrix_coeff_index_prev[4];
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int matrix_coeff_index_now[4];
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int matrix_coeff_index_next[4];
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int weighting_delay[6];
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//@}
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//@{
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/** data buffers */
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int32_t outSamples[2048];
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uint8_t decoded_bytes_buffer[1024];
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int32_t tempBuf[1070];
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//@}
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//@{
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/** extradata */
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int atrac3version;
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int delay;
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int scrambled_stream;
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int frame_factor;
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//@}
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} ATRAC3Context;
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int atrac3_decode_init(ATRAC3Context *q, RMContext *rmctx);
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int atrac3_decode_frame(RMContext *rmctx, ATRAC3Context *q,
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void *data, int *data_size,
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const uint8_t *buf, int buf_size);
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