42774d3128
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@24712 a1c6a512-1295-4272-9138-f99709370657
111 lines
3.4 KiB
C
111 lines
3.4 KiB
C
/***************************************************************************
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* __________ __ ___.
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* Open \______ \ ____ ____ | | _\_ |__ _______ ___
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* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
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* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
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* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
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* \/ \/ \/ \/ \/
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* $Id$
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*
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* Copyright (C) 2009 Mohamed Tarek
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
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* KIND, either express or implied.
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*
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****************************************************************************/
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#include "ffmpeg_bitstream.h"
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#include "../librm/rm.h"
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#include "codeclib.h"
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#if (CONFIG_CPU == PP5022) || (CONFIG_CPU == PP5024) || (CONFIG_CPU == MCF5250)
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/* PP5022/24 and MCF5250 have larger IRAM */
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#define IBSS_ATTR_LARGE_IRAM IBSS_ATTR
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#define ICODE_ATTR_LARGE_IRAM ICODE_ATTR
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#else
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/* other CPUs IRAM is not large enough */
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#define IBSS_ATTR_LARGE_IRAM
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#define ICODE_ATTR_LARGE_IRAM
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#endif
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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;
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int gcBlkSwitch;
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gain_block gainBlock[2];
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int32_t *spectrum;
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int32_t *IMDCT_buf;
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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, struct mp3entry *id3);
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int atrac3_decode_frame(unsigned long block_align, ATRAC3Context *q,
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int *data_size, const uint8_t *buf, int buf_size);
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