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/***************************************************************************
* __________ __ ___.
* Open \______ \ ____ ____ | | _\_ |__ _______ ___
* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
* \/ \/ \/ \/ \/
* $Id$
*
* Copyright (C) 2009 Mohamed Tarek
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
* KIND, either express or implied.
*
****************************************************************************/
#include "ffmpeg_get_bits.h"
#include "../librm/rm.h"
#include "codeclib.h"
#if (CONFIG_CPU == PP5022) || (CONFIG_CPU == PP5024) || (CONFIG_CPU == MCF5250)
/* PP5022/24 and MCF5250 have larger IRAM */
#define IBSS_ATTR_LARGE_IRAM IBSS_ATTR
#define ICODE_ATTR_LARGE_IRAM ICODE_ATTR
#else
/* other CPUs IRAM is not large enough */
#define IBSS_ATTR_LARGE_IRAM
#define ICODE_ATTR_LARGE_IRAM
#endif
/* These structures are needed to store the parsed gain control data. */
typedef struct {
int num_gain_data;
int levcode[8];
int loccode[8];
} gain_info;
typedef struct {
gain_info gBlock[4];
} gain_block;
typedef struct {
int pos;
int numCoefs;
int32_t coef[8];
} tonal_component;
typedef struct {
int bandsCoded;
int numComponents;
tonal_component components[64];
int32_t *prevFrame;
int gcBlkSwitch;
gain_block gainBlock[2];
int32_t *spectrum;
int32_t *IMDCT_buf;
int32_t delayBuf1[46]; ///<qmf delay buffers
int32_t delayBuf2[46];
int32_t delayBuf3[46];
} channel_unit;
typedef struct {
GetBitContext gb;
//@{
/** stream data */
int channels;
int codingMode;
int bit_rate;
int sample_rate;
int samples_per_channel;
int samples_per_frame;
int bits_per_frame;
int bytes_per_frame;
int pBs;
channel_unit* pUnits;
//@}
//@{
/** joint-stereo related variables */
int matrix_coeff_index_prev[4];
int matrix_coeff_index_now[4];
int matrix_coeff_index_next[4];
int weighting_delay[6];
//@}
//@{
/** data buffers */
int32_t outSamples[2048];
uint8_t decoded_bytes_buffer[1024];
int32_t tempBuf[1070];
//@}
//@{
/** extradata */
int atrac3version;
int delay;
int scrambled_stream;
int frame_factor;
//@}
} ATRAC3Context;
int atrac3_decode_init(ATRAC3Context *q, struct mp3entry *id3);
int atrac3_decode_frame(unsigned long block_align, ATRAC3Context *q,
int *data_size, const uint8_t *buf, int buf_size);
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