f40bfc9267
Change-Id: Id7f4717d51ed02d67cb9f9cb3c0ada4a81843f97 Reviewed-on: http://gerrit.rockbox.org/137 Reviewed-by: Nils Wallménius <nils@rockbox.org> Tested-by: Nils Wallménius <nils@rockbox.org>
131 lines
4.6 KiB
C
131 lines
4.6 KiB
C
/*
|
|
* COOK compatible decoder
|
|
* Copyright (c) 2003 Sascha Sommer
|
|
* Copyright (c) 2005 Benjamin Larsson
|
|
*
|
|
* This file is taken from FFmpeg.
|
|
*
|
|
* FFmpeg is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU Lesser General Public
|
|
* License as published by the Free Software Foundation; either
|
|
* version 2.1 of the License, or (at your option) any later version.
|
|
*
|
|
* FFmpeg is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
* Lesser General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU Lesser General Public
|
|
* License along with FFmpeg; if not, write to the Free Software
|
|
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
|
|
*/
|
|
#ifndef _COOK_H
|
|
#define _COOK_H
|
|
|
|
#include <inttypes.h>
|
|
#include "ffmpeg_get_bits.h"
|
|
#include "../librm/rm.h"
|
|
#include "cookdata_fixpoint.h"
|
|
|
|
#include "codeclib.h"
|
|
|
|
#if (CONFIG_CPU == PP5022) || (CONFIG_CPU == PP5024) || (CONFIG_CPU == MCF5250)
|
|
/* PP5022/24, MCF5250 have large IRAM */
|
|
#define IBSS_ATTR_COOK_LARGE_IRAM IBSS_ATTR
|
|
#define ICODE_ATTR_COOK_LARGE_IRAM ICODE_ATTR
|
|
#define ICONST_ATTR_COOK_LARGE_IRAM ICONST_ATTR
|
|
#define IBSS_ATTR_COOK_VLCBUF
|
|
#define ICODE_ATTR_COOK_DECODE
|
|
|
|
#elif defined(CPU_S5L870X)
|
|
/* S5L870X have even larger IRAM and it is faster to use ICODE_ATTR. */
|
|
#define IBSS_ATTR_COOK_LARGE_IRAM IBSS_ATTR
|
|
#define ICODE_ATTR_COOK_LARGE_IRAM ICODE_ATTR
|
|
#define ICONST_ATTR_COOK_LARGE_IRAM ICONST_ATTR
|
|
#define IBSS_ATTR_COOK_VLCBUF IBSS_ATTR
|
|
#define ICODE_ATTR_COOK_DECODE ICODE_ATTR
|
|
|
|
#else
|
|
/* other CPUs IRAM is not large enough */
|
|
#define IBSS_ATTR_COOK_LARGE_IRAM
|
|
#define ICODE_ATTR_COOK_LARGE_IRAM
|
|
#define ICONST_ATTR_COOK_LARGE_IRAM
|
|
#define IBSS_ATTR_COOK_VLCBUF
|
|
#define ICODE_ATTR_COOK_DECODE
|
|
|
|
#endif
|
|
|
|
typedef struct {
|
|
int *now;
|
|
int *previous;
|
|
} cook_gains;
|
|
|
|
typedef struct cook {
|
|
/*
|
|
* The following 2 functions provide the lowlevel arithmetic on
|
|
* the internal audio buffers.
|
|
*/
|
|
void (* scalar_dequant)(struct cook *q, int index, int quant_index,
|
|
int* subband_coef_index, int* subband_coef_sign,
|
|
REAL_T* mlt_p);
|
|
|
|
void (* interpolate) (struct cook *q, REAL_T* buffer,
|
|
int gain_index, int gain_index_next);
|
|
|
|
GetBitContext gb;
|
|
int frame_number;
|
|
int block_align;
|
|
int extradata_size;
|
|
/* stream data */
|
|
int nb_channels;
|
|
int joint_stereo;
|
|
int bit_rate;
|
|
int sample_rate;
|
|
int samples_per_channel;
|
|
int samples_per_frame;
|
|
int subbands;
|
|
int log2_numvector_size;
|
|
int numvector_size; //1 << log2_numvector_size;
|
|
int js_subband_start;
|
|
int total_subbands;
|
|
int num_vectors;
|
|
int bits_per_subpacket;
|
|
int cookversion;
|
|
int mdct_nbits; /* is this the same as one of above? */
|
|
/* states */
|
|
int random_state;
|
|
|
|
/* gain buffers */
|
|
cook_gains gains1;
|
|
cook_gains gains2;
|
|
int gain_1[9];
|
|
int gain_2[9];
|
|
int gain_3[9];
|
|
int gain_4[9];
|
|
|
|
/* VLC data */
|
|
int js_vlc_bits;
|
|
VLC envelope_quant_index[13];
|
|
VLC sqvh[7]; //scalar quantization
|
|
VLC ccpl; //channel coupling
|
|
|
|
/* generatable tables and related variables */
|
|
int gain_size_factor;
|
|
|
|
/* data buffers */
|
|
|
|
uint8_t decoded_bytes_buffer[1024] MEM_ALIGN_ATTR;
|
|
REAL_T mono_mdct_output[2048] MEM_ALIGN_ATTR;
|
|
REAL_T mono_previous_buffer1[1024] MEM_ALIGN_ATTR;
|
|
REAL_T mono_previous_buffer2[1024] MEM_ALIGN_ATTR;
|
|
REAL_T decode_buffer_1[1024] MEM_ALIGN_ATTR;
|
|
REAL_T decode_buffer_2[1024] MEM_ALIGN_ATTR;
|
|
/* static allocation for joint decode */
|
|
REAL_T decode_buffer_0[1060] MEM_ALIGN_ATTR;
|
|
} COOKContext;
|
|
|
|
int cook_decode_init(RMContext *rmctx, COOKContext *q);
|
|
int cook_decode_frame(RMContext *rmctx,COOKContext *q,
|
|
int32_t *outbuffer, int *data_size,
|
|
const uint8_t *inbuffer, int buf_size);
|
|
#endif /*_COOK_H */
|