7442742208
On Classic, IRAM1 (second 128Kb of a total of 256KB available IRAM) is slower than DRAM. Codecs that actually are using regions of IRAM1 runs faster when DRAM is used, so IRAM1 is disabled and only IRAM0 remains enabled: 48KB for core and 80KB for codecs/plugins. The next test_codec results shows how decode time is decreased: file boosted unboosted *.ra ~1.5% ~0.5% *.mpc ~21% ~4.5% *.ogg ~0.5% ~0% nero_he*.m4a ~8% ~1% nero*.m4a ~25% ~7% wmapro*.wma ~4.5% ~0% wma*.wma ~25% ~7% In addition there is a small power save when IRAM1 HW is disabled. Change-Id: I102adee11458e82037f23076d5d5956e23235de8
132 lines
4.7 KiB
C
132 lines
4.7 KiB
C
/*
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* COOK compatible decoder
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* Copyright (c) 2003 Sascha Sommer
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* Copyright (c) 2005 Benjamin Larsson
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*
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* This file is taken from FFmpeg.
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*
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* FFmpeg is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* FFmpeg is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with FFmpeg; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#ifndef _COOK_H
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#define _COOK_H
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#include <inttypes.h>
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#include "ffmpeg_get_bits.h"
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#include "../librm/rm.h"
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#include "cookdata_fixpoint.h"
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#include "codeclib.h"
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#if (CONFIG_CPU == PP5022) || (CONFIG_CPU == PP5024) || \
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(CONFIG_CPU == MCF5250) || (CONFIG_CPU == S5L8702)
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/* PP5022/24, S5L8702, MCF5250 have large IRAM */
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#define IBSS_ATTR_COOK_LARGE_IRAM IBSS_ATTR
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#define ICODE_ATTR_COOK_LARGE_IRAM ICODE_ATTR
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#define ICONST_ATTR_COOK_LARGE_IRAM ICONST_ATTR
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#define IBSS_ATTR_COOK_VLCBUF
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#define ICODE_ATTR_COOK_DECODE
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#elif (CONFIG_CPU == S5L8700) || (CONFIG_CPU == S5L8701)
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/* S5L870X have even larger IRAM and it is faster to use ICODE_ATTR. */
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#define IBSS_ATTR_COOK_LARGE_IRAM IBSS_ATTR
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#define ICODE_ATTR_COOK_LARGE_IRAM ICODE_ATTR
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#define ICONST_ATTR_COOK_LARGE_IRAM ICONST_ATTR
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#define IBSS_ATTR_COOK_VLCBUF IBSS_ATTR
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#define ICODE_ATTR_COOK_DECODE 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_COOK_LARGE_IRAM
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#define ICODE_ATTR_COOK_LARGE_IRAM
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#define ICONST_ATTR_COOK_LARGE_IRAM
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#define IBSS_ATTR_COOK_VLCBUF
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#define ICODE_ATTR_COOK_DECODE
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#endif
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typedef struct {
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int *now;
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int *previous;
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} cook_gains;
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typedef struct cook {
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/*
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* The following 2 functions provide the lowlevel arithmetic on
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* the internal audio buffers.
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*/
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void (* scalar_dequant)(struct cook *q, int index, int quant_index,
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int* subband_coef_index, int* subband_coef_sign,
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REAL_T* mlt_p);
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void (* interpolate) (struct cook *q, REAL_T* buffer,
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int gain_index, int gain_index_next);
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GetBitContext gb;
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int frame_number;
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int block_align;
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int extradata_size;
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/* stream data */
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int nb_channels;
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int joint_stereo;
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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 subbands;
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int log2_numvector_size;
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int numvector_size; //1 << log2_numvector_size;
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int js_subband_start;
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int total_subbands;
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int num_vectors;
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int bits_per_subpacket;
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int cookversion;
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int mdct_nbits; /* is this the same as one of above? */
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/* states */
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int random_state;
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/* gain buffers */
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cook_gains gains1;
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cook_gains gains2;
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int gain_1[9];
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int gain_2[9];
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int gain_3[9];
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int gain_4[9];
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/* VLC data */
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int js_vlc_bits;
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VLC envelope_quant_index[13];
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VLC sqvh[7]; //scalar quantization
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VLC ccpl; //channel coupling
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/* generatable tables and related variables */
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int gain_size_factor;
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/* data buffers */
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uint8_t decoded_bytes_buffer[1024] MEM_ALIGN_ATTR;
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REAL_T mono_mdct_output[2048] MEM_ALIGN_ATTR;
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REAL_T mono_previous_buffer1[1024] MEM_ALIGN_ATTR;
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REAL_T mono_previous_buffer2[1024] MEM_ALIGN_ATTR;
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REAL_T decode_buffer_1[1024] MEM_ALIGN_ATTR;
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REAL_T decode_buffer_2[1024] MEM_ALIGN_ATTR;
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/* static allocation for joint decode */
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REAL_T decode_buffer_0[1060] MEM_ALIGN_ATTR;
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} COOKContext;
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int cook_decode_init(RMContext *rmctx, COOKContext *q);
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int cook_decode_frame(RMContext *rmctx,COOKContext *q,
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int32_t *outbuffer, int *data_size,
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const uint8_t *inbuffer, int buf_size);
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#endif /*_COOK_H */
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