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Add an HE-AAC v1 decoder.

Browse Source 
A large portion of this code was orignally authored by Robert Swain. The rest
was written by me. Full history is available at:
svn://svn.ffmpeg.org/soc/aac-sbr
http://github.com/aconverse/ffmpeg-heaac/tree/sbr_pub

Originally committed as revision 22316 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Alex Converse 2010-03-08 04:33:02 +00:00
parent f19341e17a
commit ed492b61db
10 changed files with 2669 additions and 35 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1
Changelog
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@ -61,6 +61,7 @@ version <next>:
- FFprobe tool
- AMR-NB decoder
- RTSP muxer
- HE-AAC v1 decoder

2
libavcodec/Makefile
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@ -41,7 +41,7 @@ OBJS-$(CONFIG_VAAPI) += vaapi.o
OBJS-$(CONFIG_VDPAU) += vdpau.o
# decoders/encoders/hardware accelerators
OBJS-$(CONFIG_AAC_DECODER) += aac.o aactab.o
OBJS-$(CONFIG_AAC_DECODER) += aac.o aactab.o aacsbr.o
OBJS-$(CONFIG_AAC_ENCODER) += aacenc.o aaccoder.o \
aacpsy.o aactab.o \
psymodel.o iirfilter.o \

83
libavcodec/aac.c
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@ -62,7 +62,7 @@
* N MIDI
* N Harmonic and Individual Lines plus Noise
* N Text-To-Speech Interface
* N (in progress) Spectral Band Replication
* Y Spectral Band Replication
* Y (not in this code) Layer-1
* Y (not in this code) Layer-2
* Y (not in this code) Layer-3
@ -86,6 +86,8 @@
#include "aac.h"
#include "aactab.h"
#include "aacdectab.h"
#include "sbr.h"
#include "aacsbr.h"
#include "mpeg4audio.h"
#include "aac_parser.h"
@ -180,14 +182,18 @@ static av_cold int che_configure(AACContext *ac,
if (che_pos[type][id]) {
if (!ac->che[type][id] && !(ac->che[type][id] = av_mallocz(sizeof(ChannelElement))))
return AVERROR(ENOMEM);
ff_aac_sbr_ctx_init(&ac->che[type][id]->sbr);
if (type != TYPE_CCE) {
ac->output_data[(*channels)++] = ac->che[type][id]->ch[0].ret;
if (type == TYPE_CPE) {
ac->output_data[(*channels)++] = ac->che[type][id]->ch[1].ret;
}
}
} else
} else {
if (ac->che[type][id])
ff_aac_sbr_ctx_close(&ac->che[type][id]->sbr);
av_freep(&ac->che[type][id]);
}
return 0;
}
@ -530,6 +536,8 @@ static av_cold int aac_decode_init(AVCodecContext *avccontext)
AAC_INIT_VLC_STATIC( 9, 366);
AAC_INIT_VLC_STATIC(10, 462);
ff_aac_sbr_init();
dsputil_init(&ac->dsp, avccontext);
ac->random_state = 0x1f2e3d4c;
@ -1544,23 +1552,6 @@ static int decode_cce(AACContext *ac, GetBitContext *gb, ChannelElement *che)
return 0;
}
/**
* Decode Spectral Band Replication extension data; reference: table 4.55.
*
* @param crc flag indicating the presence of CRC checksum
* @param cnt length of TYPE_FIL syntactic element in bytes
*
* @return Returns number of bytes consumed from the TYPE_FIL element.
*/
static int decode_sbr_extension(AACContext *ac, GetBitContext *gb,
int crc, int cnt)
{
// TODO : sbr_extension implementation
av_log_missing_feature(ac->avccontext, "SBR", 0);
skip_bits_long(gb, 8 * cnt - 4); // -4 due to reading extension type
return cnt;
}
/**
* Parse whether channels are to be excluded from Dynamic Range Compression; reference: table 4.53.
*
@ -1641,7 +1632,8 @@ static int decode_dynamic_range(DynamicRangeControl *che_drc,
*
* @return Returns number of bytes consumed
*/
static int decode_extension_payload(AACContext *ac, GetBitContext *gb, int cnt)
static int decode_extension_payload(AACContext *ac, GetBitContext *gb, int cnt,
ChannelElement *che, enum RawDataBlockType elem_type)
{
int crc_flag = 0;
int res = cnt;
@ -1649,7 +1641,21 @@ static int decode_extension_payload(AACContext *ac, GetBitContext *gb, int cnt)
case EXT_SBR_DATA_CRC:
crc_flag++;
case EXT_SBR_DATA:
res = decode_sbr_extension(ac, gb, crc_flag, cnt);
if (!che) {
av_log(ac->avccontext, AV_LOG_ERROR, "SBR was found before the first channel element.\n");
return res;
} else if (!ac->m4ac.sbr) {
av_log(ac->avccontext, AV_LOG_ERROR, "SBR signaled to be not-present but was found in the bitstream.\n");
skip_bits_long(gb, 8 * cnt - 4);
return res;
} else if (ac->m4ac.sbr == -1 && ac->output_configured == OC_LOCKED) {
av_log(ac->avccontext, AV_LOG_ERROR, "Implicit SBR was found with a first occurrence after the first frame.\n");
skip_bits_long(gb, 8 * cnt - 4);
return res;
} else {
ac->m4ac.sbr = 1;
}
res = ff_decode_sbr_extension(ac, &che->sbr, gb, crc_flag, cnt, elem_type);
break;
case EXT_DYNAMIC_RANGE:
res = decode_dynamic_range(&ac->che_drc, gb, cnt);
@ -1830,8 +1836,9 @@ static void apply_independent_coupling(AACContext *ac,
const float bias = ac->add_bias;
const float *src = cce->ch[0].ret;
float *dest = target->ret;
const int len = 1024 << (ac->m4ac.sbr == 1);
for (i = 0; i < 1024; i++)
for (i = 0; i < len; i++)
dest[i] += gain * (src[i] - bias);
}
@ -1889,10 +1896,18 @@ static void spectral_to_sample(AACContext *ac)
apply_tns(che->ch[1].coeffs, &che->ch[1].tns, &che->ch[1].ics, 1);
if (type <= TYPE_CPE)
apply_channel_coupling(ac, che, type, i, BETWEEN_TNS_AND_IMDCT, apply_dependent_coupling);
if (type != TYPE_CCE || che->coup.coupling_point == AFTER_IMDCT)
if (type != TYPE_CCE || che->coup.coupling_point == AFTER_IMDCT) {
imdct_and_windowing(ac, &che->ch[0]);
if (type == TYPE_CPE)
if (ac->m4ac.sbr > 0) {
ff_sbr_dequant(ac, &che->sbr, type == TYPE_CPE ? TYPE_CPE : TYPE_SCE);
ff_sbr_apply(ac, &che->sbr, 0, che->ch[0].ret, che->ch[0].ret);
}
}
if (type == TYPE_CPE) {
imdct_and_windowing(ac, &che->ch[1]);
if (ac->m4ac.sbr > 0)
ff_sbr_apply(ac, &che->sbr, 1, che->ch[1].ret, che->ch[1].ret);
}
if (type <= TYPE_CCE)
apply_channel_coupling(ac, che, type, i, AFTER_IMDCT, apply_independent_coupling);
}
@ -1942,9 +1957,9 @@ static int aac_decode_frame(AVCodecContext *avccontext, void *data,
const uint8_t *buf = avpkt->data;
int buf_size = avpkt->size;
AACContext *ac = avccontext->priv_data;
ChannelElement *che = NULL;
ChannelElement *che = NULL, *che_prev = NULL;
GetBitContext gb;
enum RawDataBlockType elem_type;
enum RawDataBlockType elem_type, elem_type_prev = TYPE_END;
int err, elem_id, data_size_tmp;
int buf_consumed;
int samples = 1024, multiplier;
@ -2014,7 +2029,7 @@ static int aac_decode_frame(AVCodecContext *avccontext, void *data,
return -1;
}
while (elem_id > 0)
elem_id -= decode_extension_payload(ac, &gb, elem_id);
elem_id -= decode_extension_payload(ac, &gb, elem_id, che_prev, elem_type_prev);
err = 0; /* FIXME */
break;
@ -2023,6 +2038,9 @@ static int aac_decode_frame(AVCodecContext *avccontext, void *data,
break;
}
che_prev = che;
elem_type_prev = elem_type;
if (err)
return err;
@ -2034,14 +2052,14 @@ static int aac_decode_frame(AVCodecContext *avccontext, void *data,
spectral_to_sample(ac);
multiplier = 0;
multiplier = (ac->m4ac.sbr == 1) ? ac->m4ac.ext_sample_rate > ac->m4ac.sample_rate : 0;
samples <<= multiplier;
if (ac->output_configured < OC_LOCKED) {
avccontext->sample_rate = ac->m4ac.sample_rate << multiplier;
avccontext->frame_size = samples;
}
data_size_tmp = 1024 * avccontext->channels * sizeof(int16_t);
data_size_tmp = samples * avccontext->channels * sizeof(int16_t);
if (*data_size < data_size_tmp) {
av_log(avccontext, AV_LOG_ERROR,
"Output buffer too small (%d) or trying to output too many samples (%d) for this frame.\n",
@ -2050,7 +2068,7 @@ static int aac_decode_frame(AVCodecContext *avccontext, void *data,
}
*data_size = data_size_tmp;
ac->dsp.float_to_int16_interleave(data, (const float **)ac->output_data, 1024, avccontext->channels);
ac->dsp.float_to_int16_interleave(data, (const float **)ac->output_data, samples, avccontext->channels);
if (ac->output_configured)
ac->output_configured = OC_LOCKED;
@ -2065,8 +2083,11 @@ static av_cold int aac_decode_close(AVCodecContext *avccontext)
int i, type;
for (i = 0; i < MAX_ELEM_ID; i++) {
for (type = 0; type < 4; type++)
for (type = 0; type < 4; type++) {
if (ac->che[type][i])
ff_aac_sbr_ctx_close(&ac->che[type][i]->sbr);
av_freep(&ac->che[type][i]);
}
}
ff_mdct_end(&ac->mdct);

4
libavcodec/aac.h
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@ -34,6 +34,7 @@
#include "dsputil.h"
#include "fft.h"
#include "mpeg4audio.h"
#include "sbr.h"
#include <stdint.h>
@ -217,7 +218,7 @@ typedef struct {
uint8_t zeroes[128]; ///< band is not coded (used by encoder)
DECLARE_ALIGNED(16, float, coeffs)[1024]; ///< coefficients for IMDCT
DECLARE_ALIGNED(16, float, saved)[1024]; ///< overlap
DECLARE_ALIGNED(16, float, ret)[1024]; ///< PCM output
DECLARE_ALIGNED(16, float, ret)[2048]; ///< PCM output
PredictorState predictor_state[MAX_PREDICTORS];
} SingleChannelElement;
@ -233,6 +234,7 @@ typedef struct {
SingleChannelElement ch[2];
// CCE specific
ChannelCoupling coup;
SpectralBandReplication sbr;
} ChannelElement;
/**

1759
libavcodec/aacsbr.c Normal file
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File diff suppressed because it is too large Load Diff

51
libavcodec/aacsbr.h Normal file
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@ -0,0 +1,51 @@
/*
* AAC Spectral Band Replication function declarations
* Copyright (c) 2008-2009 Robert Swain ( rob opendot cl )
* Copyright (c) 2010 Alex Converse <alex.converse@gmail.com>
*
* This file is part of 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
*/
/**
* @file libavcodec/aacsbr.h
* AAC Spectral Band Replication function declarations
* @author Robert Swain ( rob opendot cl )
*/
#ifndef AVCODEC_AACSBR_H
#define AVCODEC_AACSBR_H
#include "get_bits.h"
#include "aac.h"
#include "sbr.h"
/** Initialize SBR. */
av_cold void ff_aac_sbr_init(void);
/** Initialize one SBR context. */
av_cold void ff_aac_sbr_ctx_init(SpectralBandReplication *sbr);
/** Close one SBR context. */
av_cold void ff_aac_sbr_ctx_close(SpectralBandReplication *sbr);
/** Decode one SBR element. */
int ff_decode_sbr_extension(AACContext *ac, SpectralBandReplication *sbr,
GetBitContext *gb, int crc, int cnt, int id_aac);
/** Dequantized all channels in one SBR element. */
void ff_sbr_dequant(AACContext *ac, SpectralBandReplication *sbr, int id_aac);
/** Apply dequantized SBR to a single AAC channel. */
void ff_sbr_apply(AACContext *ac, SpectralBandReplication *sbr, int ch,
const float* in, float* out);
#endif /* AVCODEC_AACSBR_H */

613
libavcodec/aacsbrdata.h Normal file
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@ -0,0 +1,613 @@
/*
* AAC Spectral Band Replication decoding data
* Copyright (c) 2008-2009 Robert Swain ( rob opendot cl )
*
* This file is part of 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
*/
/**
* @file libavcodec/aacsbrdata.h
* AAC Spectral Band Replication decoding data
* @author Robert Swain ( rob opendot cl )
*/
#ifndef AVCODEC_AACSBRDATA_H
#define AVCODEC_AACSBRDATA_H
#include <stdint.h>
///< Huffman tables for SBR
static const uint8_t t_huffman_env_1_5dB_bits[121] = {
18, 18, 18, 18, 18, 18, 19, 19,
19, 19, 19, 19, 19, 19, 19, 19,
19, 19, 19, 19, 19, 19, 19, 19,
19, 19, 19, 19, 19, 19, 19, 19,
19, 19, 17, 18, 16, 17, 18, 17,
16, 16, 16, 16, 15, 14, 14, 13,
13, 12, 11, 10, 9, 8, 7, 6,
5, 4, 3, 2, 2, 3, 4, 5,
6, 7, 8, 9, 10, 12, 13, 14,
14, 15, 16, 17, 16, 19, 19, 19,
19, 19, 19, 19, 19, 19, 19, 19,
19, 19, 19, 19, 19, 19, 19, 19,
19, 19, 19, 19, 19, 19, 19, 19,
19, 19, 19, 19, 19, 19, 19, 19,
19, 19, 19, 19, 19, 19, 19, 19,
19,
};
static const uint32_t t_huffman_env_1_5dB_codes[121] = {
0x3ffd6, 0x3ffd7, 0x3ffd8, 0x3ffd9, 0x3ffda, 0x3ffdb, 0x7ffb8, 0x7ffb9,
0x7ffba, 0x7ffbb, 0x7ffbc, 0x7ffbd, 0x7ffbe, 0x7ffbf, 0x7ffc0, 0x7ffc1,
0x7ffc2, 0x7ffc3, 0x7ffc4, 0x7ffc5, 0x7ffc6, 0x7ffc7, 0x7ffc8, 0x7ffc9,
0x7ffca, 0x7ffcb, 0x7ffcc, 0x7ffcd, 0x7ffce, 0x7ffcf, 0x7ffd0, 0x7ffd1,
0x7ffd2, 0x7ffd3, 0x1ffe6, 0x3ffd4, 0x0fff0, 0x1ffe9, 0x3ffd5, 0x1ffe7,
0x0fff1, 0x0ffec, 0x0ffed, 0x0ffee, 0x07ff4, 0x03ff9, 0x03ff7, 0x01ffa,
0x01ff9, 0x00ffb, 0x007fc, 0x003fc, 0x001fd, 0x000fd, 0x0007d, 0x0003d,
0x0001d, 0x0000d, 0x00005, 0x00001, 0x00000, 0x00004, 0x0000c, 0x0001c,
0x0003c, 0x0007c, 0x000fc, 0x001fc, 0x003fd, 0x00ffa, 0x01ff8, 0x03ff6,
0x03ff8, 0x07ff5, 0x0ffef, 0x1ffe8, 0x0fff2, 0x7ffd4, 0x7ffd5, 0x7ffd6,
0x7ffd7, 0x7ffd8, 0x7ffd9, 0x7ffda, 0x7ffdb, 0x7ffdc, 0x7ffdd, 0x7ffde,
0x7ffdf, 0x7ffe0, 0x7ffe1, 0x7ffe2, 0x7ffe3, 0x7ffe4, 0x7ffe5, 0x7ffe6,
0x7ffe7, 0x7ffe8, 0x7ffe9, 0x7ffea, 0x7ffeb, 0x7ffec, 0x7ffed, 0x7ffee,
0x7ffef, 0x7fff0, 0x7fff1, 0x7fff2, 0x7fff3, 0x7fff4, 0x7fff5, 0x7fff6,
0x7fff7, 0x7fff8, 0x7fff9, 0x7fffa, 0x7fffb, 0x7fffc, 0x7fffd, 0x7fffe,
0x7ffff,
};
static const uint8_t f_huffman_env_1_5dB_bits[121] = {
19, 19, 20, 20, 20, 20, 20, 20,
20, 19, 20, 20, 20, 20, 19, 20,
19, 19, 20, 18, 20, 20, 20, 19,
20, 20, 20, 19, 20, 19, 18, 19,
18, 18, 17, 18, 17, 17, 17, 16,
16, 16, 15, 15, 14, 13, 13, 12,
12, 11, 10, 9, 9, 8, 7, 6,
5, 4, 3, 2, 2, 3, 4, 5,
6, 8, 8, 9, 10, 11, 11, 11,
12, 12, 13, 13, 14, 14, 16, 16,
17, 17, 18, 18, 18, 18, 18, 18,
18, 20, 19, 20, 20, 20, 20, 20,
20, 19, 20, 20, 20, 20, 19, 20,
18, 20, 20, 19, 19, 20, 20, 20,
20, 20, 20, 20, 20, 20, 20, 20,
20,
};
static const uint32_t f_huffman_env_1_5dB_codes[121] = {
0x7ffe7, 0x7ffe8, 0xfffd2, 0xfffd3, 0xfffd4, 0xfffd5, 0xfffd6, 0xfffd7,
0xfffd8, 0x7ffda, 0xfffd9, 0xfffda, 0xfffdb, 0xfffdc, 0x7ffdb, 0xfffdd,
0x7ffdc, 0x7ffdd, 0xfffde, 0x3ffe4, 0xfffdf, 0xfffe0, 0xfffe1, 0x7ffde,
0xfffe2, 0xfffe3, 0xfffe4, 0x7ffdf, 0xfffe5, 0x7ffe0, 0x3ffe8, 0x7ffe1,
0x3ffe0, 0x3ffe9, 0x1ffef, 0x3ffe5, 0x1ffec, 0x1ffed, 0x1ffee, 0x0fff4,
0x0fff3, 0x0fff0, 0x07ff7, 0x07ff6, 0x03ffa, 0x01ffa, 0x01ff9, 0x00ffa,
0x00ff8, 0x007f9, 0x003fb, 0x001fc, 0x001fa, 0x000fb, 0x0007c, 0x0003c,
0x0001c, 0x0000c, 0x00005, 0x00001, 0x00000, 0x00004, 0x0000d, 0x0001d,
0x0003d, 0x000fa, 0x000fc, 0x001fb, 0x003fa, 0x007f8, 0x007fa, 0x007fb,
0x00ff9, 0x00ffb, 0x01ff8, 0x01ffb, 0x03ff8, 0x03ff9, 0x0fff1, 0x0fff2,
0x1ffea, 0x1ffeb, 0x3ffe1, 0x3ffe2, 0x3ffea, 0x3ffe3, 0x3ffe6, 0x3ffe7,
0x3ffeb, 0xfffe6, 0x7ffe2, 0xfffe7, 0xfffe8, 0xfffe9, 0xfffea, 0xfffeb,
0xfffec, 0x7ffe3, 0xfffed, 0xfffee, 0xfffef, 0xffff0, 0x7ffe4, 0xffff1,
0x3ffec, 0xffff2, 0xffff3, 0x7ffe5, 0x7ffe6, 0xffff4, 0xffff5, 0xffff6,
0xffff7, 0xffff8, 0xffff9, 0xffffa, 0xffffb, 0xffffc, 0xffffd, 0xffffe,
0xfffff,
};
static const uint8_t t_huffman_env_bal_1_5dB_bits[49] = {
16, 16, 16, 16, 16, 16, 16, 16,
16, 16, 16, 16, 16, 16, 16, 16,
16, 16, 12, 11, 9, 7, 5, 3,
1, 2, 4, 6, 8, 11, 12, 15,
16, 16, 16, 16, 16, 16, 16, 17,
17, 17, 17, 17, 17, 17, 17, 17,
17,
};
static const uint32_t t_huffman_env_bal_1_5dB_codes[49] = {
0x0ffe4, 0x0ffe5, 0x0ffe6, 0x0ffe7, 0x0ffe8, 0x0ffe9, 0x0ffea, 0x0ffeb,
0x0ffec, 0x0ffed, 0x0ffee, 0x0ffef, 0x0fff0, 0x0fff1, 0x0fff2, 0x0fff3,
0x0fff4, 0x0ffe2, 0x00ffc, 0x007fc, 0x001fe, 0x0007e, 0x0001e, 0x00006,
0x00000, 0x00002, 0x0000e, 0x0003e, 0x000fe, 0x007fd, 0x00ffd, 0x07ff0,
0x0ffe3, 0x0fff5, 0x0fff6, 0x0fff7, 0x0fff8, 0x0fff9, 0x0fffa, 0x1fff6,
0x1fff7, 0x1fff8, 0x1fff9, 0x1fffa, 0x1fffb, 0x1fffc, 0x1fffd, 0x1fffe,
0x1ffff,
};
static const uint8_t f_huffman_env_bal_1_5dB_bits[49] = {
18, 18, 18, 18, 18, 18, 18, 18,
18, 18, 18, 18, 18, 18, 18, 16,
17, 14, 11, 11, 8, 7, 4, 2,
1, 3, 5, 6, 9, 11, 12, 15,
16, 18, 18, 18, 18, 18, 18, 18,
18, 18, 18, 18, 18, 18, 18, 19,
19,
};
static const uint32_t f_huffman_env_bal_1_5dB_codes[49] = {
0x3ffe2, 0x3ffe3, 0x3ffe4, 0x3ffe5, 0x3ffe6, 0x3ffe7, 0x3ffe8, 0x3ffe9,
0x3ffea, 0x3ffeb, 0x3ffec, 0x3ffed, 0x3ffee, 0x3ffef, 0x3fff0, 0x0fff7,
0x1fff0, 0x03ffc, 0x007fe, 0x007fc, 0x000fe, 0x0007e, 0x0000e, 0x00002,
0x00000, 0x00006, 0x0001e, 0x0003e, 0x001fe, 0x007fd, 0x00ffe, 0x07ffa,
0x0fff6, 0x3fff1, 0x3fff2, 0x3fff3, 0x3fff4, 0x3fff5, 0x3fff6, 0x3fff7,
0x3fff8, 0x3fff9, 0x3fffa, 0x3fffb, 0x3fffc, 0x3fffd, 0x3fffe, 0x7fffe,
0x7ffff,
};
static const uint8_t t_huffman_env_3_0dB_bits[63] = {
18, 18, 19, 19, 19, 19, 19, 19,
19, 19, 19, 19, 19, 19, 19, 19,
19, 17, 16, 16, 16, 14, 14, 14,
13, 12, 11, 8, 6, 4, 2, 1,
3, 5, 7, 9, 11, 13, 14, 14,
15, 16, 17, 18, 19, 19, 19, 19,
19, 19, 19, 19, 19, 19, 19, 19,
19, 19, 19, 19, 19, 19, 19,
};
static const uint32_t t_huffman_env_3_0dB_codes[63] = {
0x3ffed, 0x3ffee, 0x7ffde, 0x7ffdf, 0x7ffe0, 0x7ffe1, 0x7ffe2, 0x7ffe3,
0x7ffe4, 0x7ffe5, 0x7ffe6, 0x7ffe7, 0x7ffe8, 0x7ffe9, 0x7ffea, 0x7ffeb,
0x7ffec, 0x1fff4, 0x0fff7, 0x0fff9, 0x0fff8, 0x03ffb, 0x03ffa, 0x03ff8,
0x01ffa, 0x00ffc, 0x007fc, 0x000fe, 0x0003e, 0x0000e, 0x00002, 0x00000,
0x00006, 0x0001e, 0x0007e, 0x001fe, 0x007fd, 0x01ffb, 0x03ff9, 0x03ffc,
0x07ffa, 0x0fff6, 0x1fff5, 0x3ffec, 0x7ffed, 0x7ffee, 0x7ffef, 0x7fff0,
0x7fff1, 0x7fff2, 0x7fff3, 0x7fff4, 0x7fff5, 0x7fff6, 0x7fff7, 0x7fff8,
0x7fff9, 0x7fffa, 0x7fffb, 0x7fffc, 0x7fffd, 0x7fffe, 0x7ffff,
};
static const uint8_t f_huffman_env_3_0dB_bits[63] = {
20, 20, 20, 20, 20, 20, 20, 18,
19, 19, 19, 19, 18, 18, 20, 19,
17, 18, 17, 16, 16, 15, 14, 12,
11, 10, 9, 8, 6, 4, 2, 1,
3, 5, 8, 9, 10, 11, 12, 13,
14, 15, 15, 16, 16, 17, 17, 18,
18, 18, 20, 19, 19, 19, 20, 19,
19, 20, 20, 20, 20, 20, 20,
};
static const uint32_t f_huffman_env_3_0dB_codes[63] = {
0xffff0, 0xffff1, 0xffff2, 0xffff3, 0xffff4, 0xffff5, 0xffff6, 0x3fff3,
0x7fff5, 0x7ffee, 0x7ffef, 0x7fff6, 0x3fff4, 0x3fff2, 0xffff7, 0x7fff0,
0x1fff5, 0x3fff0, 0x1fff4, 0x0fff7, 0x0fff6, 0x07ff8, 0x03ffb, 0x00ffd,
0x007fd, 0x003fd, 0x001fd, 0x000fd, 0x0003e, 0x0000e, 0x00002, 0x00000,
0x00006, 0x0001e, 0x000fc, 0x001fc, 0x003fc, 0x007fc, 0x00ffc, 0x01ffc,
0x03ffa, 0x07ff9, 0x07ffa, 0x0fff8, 0x0fff9, 0x1fff6, 0x1fff7, 0x3fff5,
0x3fff6, 0x3fff1, 0xffff8, 0x7fff1, 0x7fff2, 0x7fff3, 0xffff9, 0x7fff7,
0x7fff4, 0xffffa, 0xffffb, 0xffffc, 0xffffd, 0xffffe, 0xfffff,
};
static const uint8_t t_huffman_env_bal_3_0dB_bits[25] = {
13, 13, 13, 13, 13, 13, 13, 12,
8, 7, 4, 3, 1, 2, 5, 6,
9, 13, 13, 13, 13, 13, 13, 14,
14,
};
static const uint16_t t_huffman_env_bal_3_0dB_codes[25] = {
0x1ff2, 0x1ff3, 0x1ff4, 0x1ff5, 0x1ff6, 0x1ff7, 0x1ff8, 0x0ff8,
0x00fe, 0x007e, 0x000e, 0x0006, 0x0000, 0x0002, 0x001e, 0x003e,
0x01fe, 0x1ff9, 0x1ffa, 0x1ffb, 0x1ffc, 0x1ffd, 0x1ffe, 0x3ffe,
0x3fff,
};
static const uint8_t f_huffman_env_bal_3_0dB_bits[25] = {
13, 13, 13, 13, 13, 14, 14, 11,
8, 7, 4, 2, 1, 3, 5, 6,
9, 12, 13, 14, 14, 14, 14, 14,
14,
};
static const uint16_t f_huffman_env_bal_3_0dB_codes[25] = {
0x1ff7, 0x1ff8, 0x1ff9, 0x1ffa, 0x1ffb, 0x3ff8, 0x3ff9, 0x07fc,
0x00fe, 0x007e, 0x000e, 0x0002, 0x0000, 0x0006, 0x001e, 0x003e,
0x01fe, 0x0ffa, 0x1ff6, 0x3ffa, 0x3ffb, 0x3ffc, 0x3ffd, 0x3ffe,
0x3fff,
};
static const uint8_t t_huffman_noise_3_0dB_bits[63] = {
13, 13, 13, 13, 13, 13, 13, 13,
13, 13, 13, 13, 13, 13, 13, 13,
13, 13, 13, 13, 13, 13, 13, 13,
13, 13, 11, 8, 6, 4, 3, 1,
2, 5, 8, 10, 13, 13, 13, 13,
13, 13, 13, 13, 13, 13, 13, 13,
13, 13, 13, 13, 13, 13, 13, 13,
13, 13, 13, 13, 13, 14, 14,
};
static const uint16_t t_huffman_noise_3_0dB_codes[63] = {
0x1fce, 0x1fcf, 0x1fd0, 0x1fd1, 0x1fd2, 0x1fd3, 0x1fd4, 0x1fd5,
0x1fd6, 0x1fd7, 0x1fd8, 0x1fd9, 0x1fda, 0x1fdb, 0x1fdc, 0x1fdd,
0x1fde, 0x1fdf, 0x1fe0, 0x1fe1, 0x1fe2, 0x1fe3, 0x1fe4, 0x1fe5,
0x1fe6, 0x1fe7, 0x07f2, 0x00fd, 0x003e, 0x000e, 0x0006, 0x0000,
0x0002, 0x001e, 0x00fc, 0x03f8, 0x1fcc, 0x1fe8, 0x1fe9, 0x1fea,
0x1feb, 0x1fec, 0x1fcd, 0x1fed, 0x1fee, 0x1fef, 0x1ff0, 0x1ff1,
0x1ff2, 0x1ff3, 0x1ff4, 0x1ff5, 0x1ff6, 0x1ff7, 0x1ff8, 0x1ff9,
0x1ffa, 0x1ffb, 0x1ffc, 0x1ffd, 0x1ffe, 0x3ffe, 0x3fff,
};
static const uint8_t t_huffman_noise_bal_3_0dB_bits[25] = {
8, 8, 8, 8, 8, 8, 8, 8,
8, 8, 5, 2, 1, 3, 6, 8,
8, 8, 8, 8, 8, 8, 8, 8,
8,
};
static const uint8_t t_huffman_noise_bal_3_0dB_codes[25] = {
0xec, 0xed, 0xee, 0xef, 0xf0, 0xf1, 0xf2, 0xf3,
0xf4, 0xf5, 0x1c, 0x02, 0x00, 0x06, 0x3a, 0xf6,
0xf7, 0xf8, 0xf9, 0xfa, 0xfb, 0xfc, 0xfd, 0xfe,
0xff,
};
static const int8_t sbr_offset[6][16] = {
{-8, -7, -6, -5, -4, -3, -2, -1, 0, 1, 2, 3, 4, 5, 6, 7}, // fs_sbr = 16000 Hz
{-5, -4, -3, -2, -1, 0, 1, 2, 3, 4, 5, 6, 7, 9, 11, 13}, // fs_sbr = 22050 Hz
{-5, -3, -2, -1, 0, 1, 2, 3, 4, 5, 6, 7, 9, 11, 13, 16}, // fs_sbr = 24000 Hz
{-6, -4, -2, -1, 0, 1, 2, 3, 4, 5, 6, 7, 9, 11, 13, 16}, // fs_sbr = 32000 Hz
{-4, -2, -1, 0, 1, 2, 3, 4, 5, 6, 7, 9, 11, 13, 16, 20}, // 44100 Hz <= fs_sbr <= 64000 Hz
{-2, -1, 0, 1, 2, 3, 4, 5, 6, 7, 9, 11, 13, 16, 20, 24}, // 64000 Hz < fs_sbr
};
///< window coefficients for analysis/synthesis QMF banks
static DECLARE_ALIGNED(16, float, sbr_qmf_window_ds)[320];
static DECLARE_ALIGNED(16, float, sbr_qmf_window_us)[640] = {
0.0000000000, -0.0005525286, -0.0005617692, -0.0004947518,
-0.0004875227, -0.0004893791, -0.0005040714, -0.0005226564,
-0.0005466565, -0.0005677802, -0.0005870930, -0.0006132747,
-0.0006312493, -0.0006540333, -0.0006777690, -0.0006941614,
-0.0007157736, -0.0007255043, -0.0007440941, -0.0007490598,
-0.0007681371, -0.0007724848, -0.0007834332, -0.0007779869,
-0.0007803664, -0.0007801449, -0.0007757977, -0.0007630793,
-0.0007530001, -0.0007319357, -0.0007215391, -0.0006917937,
-0.0006650415, -0.0006341594, -0.0005946118, -0.0005564576,
-0.0005145572, -0.0004606325, -0.0004095121, -0.0003501175,
-0.0002896981, -0.0002098337, -0.0001446380, -0.0000617334,
0.0000134949, 0.0001094383, 0.0002043017, 0.0002949531,
0.0004026540, 0.0005107388, 0.0006239376, 0.0007458025,
0.0008608443, 0.0009885988, 0.0011250155, 0.0012577884,
0.0013902494, 0.0015443219, 0.0016868083, 0.0018348265,
0.0019841140, 0.0021461583, 0.0023017254, 0.0024625616,
0.0026201758, 0.0027870464, 0.0029469447, 0.0031125420,
0.0032739613, 0.0034418874, 0.0036008268, 0.0037603922,
0.0039207432, 0.0040819753, 0.0042264269, 0.0043730719,
0.0045209852, 0.0046606460, 0.0047932560, 0.0049137603,
0.0050393022, 0.0051407353, 0.0052461166, 0.0053471681,
0.0054196775, 0.0054876040, 0.0055475714, 0.0055938023,
0.0056220643, 0.0056455196, 0.0056389199, 0.0056266114,
0.0055917128, 0.0055404363, 0.0054753783, 0.0053838975,
0.0052715758, 0.0051382275, 0.0049839687, 0.0048109469,
0.0046039530, 0.0043801861, 0.0041251642, 0.0038456408,
0.0035401246, 0.0032091885, 0.0028446757, 0.0024508540,
0.0020274176, 0.0015784682, 0.0010902329, 0.0005832264,
0.0000276045, -0.0005464280, -0.0011568135, -0.0018039472,
-0.0024826723, -0.0031933778, -0.0039401124, -0.0047222596,
-0.0055337211, -0.0063792293, -0.0072615816, -0.0081798233,
-0.0091325329, -0.0101150215, -0.0111315548, -0.0121849995,
0.0132718220, 0.0143904666, 0.0155405553, 0.0167324712,
0.0179433381, 0.0191872431, 0.0204531793, 0.0217467550,
0.0230680169, 0.0244160992, 0.0257875847, 0.0271859429,
0.0286072173, 0.0300502657, 0.0315017608, 0.0329754081,
0.0344620948, 0.0359697560, 0.0374812850, 0.0390053679,
0.0405349170, 0.0420649094, 0.0436097542, 0.0451488405,
0.0466843027, 0.0482165720, 0.0497385755, 0.0512556155,
0.0527630746, 0.0542452768, 0.0557173648, 0.0571616450,
0.0585915683, 0.0599837480, 0.0613455171, 0.0626857808,
0.0639715898, 0.0652247106, 0.0664367512, 0.0676075985,
0.0687043828, 0.0697630244, 0.0707628710, 0.0717002673,
0.0725682583, 0.0733620255, 0.0741003642, 0.0747452558,
0.0753137336, 0.0758008358, 0.0761992479, 0.0764992170,
0.0767093490, 0.0768173975, 0.0768230011, 0.0767204924,
0.0765050718, 0.0761748321, 0.0757305756, 0.0751576255,
0.0744664394, 0.0736406005, 0.0726774642, 0.0715826364,
0.0703533073, 0.0689664013, 0.0674525021, 0.0657690668,
0.0639444805, 0.0619602779, 0.0598166570, 0.0575152691,
0.0550460034, 0.0524093821, 0.0495978676, 0.0466303305,
0.0434768782, 0.0401458278, 0.0366418116, 0.0329583930,
0.0290824006, 0.0250307561, 0.0207997072, 0.0163701258,
0.0117623832, 0.0069636862, 0.0019765601, -0.0032086896,
-0.0085711749, -0.0141288827, -0.0198834129, -0.0258227288,
-0.0319531274, -0.0382776572, -0.0447806821, -0.0514804176,
-0.0583705326, -0.0654409853, -0.0726943300, -0.0801372934,
-0.0877547536, -0.0955533352, -0.1035329531, -0.1116826931,
-0.1200077984, -0.1285002850, -0.1371551761, -0.1459766491,
-0.1549607071, -0.1640958855, -0.1733808172, -0.1828172548,
-0.1923966745, -0.2021250176, -0.2119735853, -0.2219652696,
-0.2320690870, -0.2423016884, -0.2526480309, -0.2631053299,
-0.2736634040, -0.2843214189, -0.2950716717, -0.3059098575,
-0.3168278913, -0.3278113727, -0.3388722693, -0.3499914122,
0.3611589903, 0.3723795546, 0.3836350013, 0.3949211761,
0.4062317676, 0.4175696896, 0.4289119920, 0.4402553754,
0.4515996535, 0.4629308085, 0.4742453214, 0.4855253091,
0.4967708254, 0.5079817500, 0.5191234970, 0.5302240895,
0.5412553448, 0.5522051258, 0.5630789140, 0.5738524131,
0.5845403235, 0.5951123086, 0.6055783538, 0.6159109932,
0.6261242695, 0.6361980107, 0.6461269695, 0.6559016302,
0.6655139880, 0.6749663190, 0.6842353293, 0.6933282376,
0.7022388719, 0.7109410426, 0.7194462634, 0.7277448900,
0.7358211758, 0.7436827863, 0.7513137456, 0.7587080760,
0.7658674865, 0.7727780881, 0.7794287519, 0.7858353120,
0.7919735841, 0.7978466413, 0.8034485751, 0.8087695004,
0.8138191270, 0.8185776004, 0.8230419890, 0.8272275347,
0.8311038457, 0.8346937361, 0.8379717337, 0.8409541392,
0.8436238281, 0.8459818469, 0.8480315777, 0.8497805198,
0.8511971524, 0.8523047035, 0.8531020949, 0.8535720573,
0.8537385600,
};
static const float sbr_noise_table[512][2] = {
{-0.99948153278296, -0.59483417516607}, { 0.97113454393991, -0.67528515225647},
{ 0.14130051758487, -0.95090983575689}, {-0.47005496701697, -0.37340549728647},
{ 0.80705063769351, 0.29653668284408}, {-0.38981478896926, 0.89572605717087},
{-0.01053049862020, -0.66959058036166}, {-0.91266367957293, -0.11522938140034},
{ 0.54840422910309, 0.75221367176302}, { 0.40009252867955, -0.98929400334421},
{-0.99867974711855, -0.88147068645358}, {-0.95531076805040, 0.90908757154593},
{-0.45725933317144, -0.56716323646760}, {-0.72929675029275, -0.98008272727324},
{ 0.75622801399036, 0.20950329995549}, { 0.07069442601050, -0.78247898470706},
{ 0.74496252926055, -0.91169004445807}, {-0.96440182703856, -0.94739918296622},
{ 0.30424629369539, -0.49438267012479}, { 0.66565033746925, 0.64652935542491},
{ 0.91697008020594, 0.17514097332009}, {-0.70774918760427, 0.52548653416543},
{-0.70051415345560, -0.45340028808763}, {-0.99496513054797, -0.90071908066973},
{ 0.98164490790123, -0.77463155528697}, {-0.54671580548181, -0.02570928536004},
{-0.01689629065389, 0.00287506445732}, {-0.86110349531986, 0.42548583726477},
{-0.98892980586032, -0.87881132267556}, { 0.51756627678691, 0.66926784710139},
{-0.99635026409640, -0.58107730574765}, {-0.99969370862163, 0.98369989360250},
{ 0.55266258627194, 0.59449057465591}, { 0.34581177741673, 0.94879421061866},
{ 0.62664209577999, -0.74402970906471}, {-0.77149701404973, -0.33883658042801},
{-0.91592244254432, 0.03687901376713}, {-0.76285492357887, -0.91371867919124},
{ 0.79788337195331, -0.93180971199849}, { 0.54473080610200, -0.11919206037186},
{-0.85639281671058, 0.42429854760451}, {-0.92882402971423, 0.27871809078609},
{-0.11708371046774, -0.99800843444966}, { 0.21356749817493, -0.90716295627033},
{-0.76191692573909, 0.99768118356265}, { 0.98111043100884, -0.95854459734407},
{-0.85913269895572, 0.95766566168880}, {-0.93307242253692, 0.49431757696466},
{ 0.30485754879632, -0.70540034357529}, { 0.85289650925190, 0.46766131791044},
{ 0.91328082618125, -0.99839597361769}, {-0.05890199924154, 0.70741827819497},
{ 0.28398686150148, 0.34633555702188}, { 0.95258164539612, -0.54893416026939},
{-0.78566324168507, -0.75568541079691}, {-0.95789495447877, -0.20423194696966},
{ 0.82411158711197, 0.96654618432562}, {-0.65185446735885, -0.88734990773289},
{-0.93643603134666, 0.99870790442385}, { 0.91427159529618, -0.98290505544444},
{-0.70395684036886, 0.58796798221039}, { 0.00563771969365, 0.61768196727244},
{ 0.89065051931895, 0.52783352697585}, {-0.68683707712762, 0.80806944710339},
{ 0.72165342518718, -0.69259857349564}, {-0.62928247730667, 0.13627037407335},
{ 0.29938434065514, -0.46051329682246}, {-0.91781958879280, -0.74012716684186},
{ 0.99298717043688, 0.40816610075661}, { 0.82368298622748, -0.74036047190173},
{-0.98512833386833, -0.99972330709594}, {-0.95915368242257, -0.99237800466040},
{-0.21411126572790, -0.93424819052545}, {-0.68821476106884, -0.26892306315457},
{ 0.91851997982317, 0.09358228901785}, {-0.96062769559127, 0.36099095133739},
{ 0.51646184922287, -0.71373332873917}, { 0.61130721139669, 0.46950141175917},
{ 0.47336129371299, -0.27333178296162}, { 0.90998308703519, 0.96715662938132},
{ 0.44844799194357, 0.99211574628306}, { 0.66614891079092, 0.96590176169121},
{ 0.74922239129237, -0.89879858826087}, {-0.99571588506485, 0.52785521494349},
{ 0.97401082477563, -0.16855870075190}, { 0.72683747733879, -0.48060774432251},
{ 0.95432193457128, 0.68849603408441}, {-0.72962208425191, -0.76608443420917},
{-0.85359479233537, 0.88738125901579}, {-0.81412430338535, -0.97480768049637},
{-0.87930772356786, 0.74748307690436}, {-0.71573331064977, -0.98570608178923},
{ 0.83524300028228, 0.83702537075163}, {-0.48086065601423, -0.98848504923531},
{ 0.97139128574778, 0.80093621198236}, { 0.51992825347895, 0.80247631400510},
{-0.00848591195325, -0.76670128000486}, {-0.70294374303036, 0.55359910445577},
{-0.95894428168140, -0.43265504344783}, { 0.97079252950321, 0.09325857238682},
{-0.92404293670797, 0.85507704027855}, {-0.69506469500450, 0.98633412625459},
{ 0.26559203620024, 0.73314307966524}, { 0.28038443336943, 0.14537913654427},
{-0.74138124825523, 0.99310339807762}, {-0.01752795995444, -0.82616635284178},
{-0.55126773094930, -0.98898543862153}, { 0.97960898850996, -0.94021446752851},
{-0.99196309146936, 0.67019017358456}, {-0.67684928085260, 0.12631491649378},
{ 0.09140039465500, -0.20537731453108}, {-0.71658965751996, -0.97788200391224},
{ 0.81014640078925, 0.53722648362443}, { 0.40616991671205, -0.26469008598449},
{-0.67680188682972, 0.94502052337695}, { 0.86849774348749, -0.18333598647899},
{-0.99500381284851, -0.02634122068550}, { 0.84329189340667, 0.10406957462213},
{-0.09215968531446, 0.69540012101253}, { 0.99956173327206, -0.12358542001404},
{-0.79732779473535, -0.91582524736159}, { 0.96349973642406, 0.96640458041000},
{-0.79942778496547, 0.64323902822857}, {-0.11566039853896, 0.28587846253726},
{-0.39922954514662, 0.94129601616966}, { 0.99089197565987, -0.92062625581587},
{ 0.28631285179909, -0.91035047143603}, {-0.83302725605608, -0.67330410892084},
{ 0.95404443402072, 0.49162765398743}, {-0.06449863579434, 0.03250560813135},
{-0.99575054486311, 0.42389784469507}, {-0.65501142790847, 0.82546114655624},
{-0.81254441908887, -0.51627234660629}, {-0.99646369485481, 0.84490533520752},
{ 0.00287840603348, 0.64768261158166}, { 0.70176989408455, -0.20453028573322},
{ 0.96361882270190, 0.40706967140989}, {-0.68883758192426, 0.91338958840772},
{-0.34875585502238, 0.71472290693300}, { 0.91980081243087, 0.66507455644919},
{-0.99009048343881, 0.85868021604848}, { 0.68865791458395, 0.55660316809678},
{-0.99484402129368, -0.20052559254934}, { 0.94214511408023, -0.99696425367461},
{-0.67414626793544, 0.49548221180078}, {-0.47339353684664, -0.85904328834047},
{ 0.14323651387360, -0.94145598222488}, {-0.29268293575672, 0.05759224927952},
{ 0.43793861458754, -0.78904969892724}, {-0.36345126374441, 0.64874435357162},
{-0.08750604656825, 0.97686944362527}, {-0.96495267812511, -0.53960305946511},
{ 0.55526940659947, 0.78891523734774}, { 0.73538215752630, 0.96452072373404},
{-0.30889773919437, -0.80664389776860}, { 0.03574995626194, -0.97325616900959},
{ 0.98720684660488, 0.48409133691962}, {-0.81689296271203, -0.90827703628298},
{ 0.67866860118215, 0.81284503870856}, {-0.15808569732583, 0.85279555024382},
{ 0.80723395114371, -0.24717418514605}, { 0.47788757329038, -0.46333147839295},
{ 0.96367554763201, 0.38486749303242}, {-0.99143875716818, -0.24945277239809},
{ 0.83081876925833, -0.94780851414763}, {-0.58753191905341, 0.01290772389163},
{ 0.95538108220960, -0.85557052096538}, {-0.96490920476211, -0.64020970923102},
{-0.97327101028521, 0.12378128133110}, { 0.91400366022124, 0.57972471346930},
{-0.99925837363824, 0.71084847864067}, {-0.86875903507313, -0.20291699203564},
{-0.26240034795124, -0.68264554369108}, {-0.24664412953388, -0.87642273115183},
{ 0.02416275806869, 0.27192914288905}, { 0.82068619590515, -0.85087787994476},
{ 0.88547373760759, -0.89636802901469}, {-0.18173078152226, -0.26152145156800},
{ 0.09355476558534, 0.54845123045604}, {-0.54668414224090, 0.95980774020221},
{ 0.37050990604091, -0.59910140383171}, {-0.70373594262891, 0.91227665827081},
{-0.34600785879594, -0.99441426144200}, {-0.68774481731008, -0.30238837956299},
{-0.26843291251234, 0.83115668004362}, { 0.49072334613242, -0.45359708737775},
{ 0.38975993093975, 0.95515358099121}, {-0.97757125224150, 0.05305894580606},
{-0.17325552859616, -0.92770672250494}, { 0.99948035025744, 0.58285545563426},
{-0.64946246527458, 0.68645507104960}, {-0.12016920576437, -0.57147322153312},
{-0.58947456517751, -0.34847132454388}, {-0.41815140454465, 0.16276422358861},
{ 0.99885650204884, 0.11136095490444}, {-0.56649614128386, -0.90494866361587},
{ 0.94138021032330, 0.35281916733018}, {-0.75725076534641, 0.53650549640587},
{ 0.20541973692630, -0.94435144369918}, { 0.99980371023351, 0.79835913565599},
{ 0.29078277605775, 0.35393777921520}, {-0.62858772103030, 0.38765693387102},
{ 0.43440904467688, -0.98546330463232}, {-0.98298583762390, 0.21021524625209},
{ 0.19513029146934, -0.94239832251867}, {-0.95476662400101, 0.98364554179143},
{ 0.93379635304810, -0.70881994583682}, {-0.85235410573336, -0.08342347966410},
{-0.86425093011245, -0.45795025029466}, { 0.38879779059045, 0.97274429344593},
{ 0.92045124735495, -0.62433652524220}, { 0.89162532251878, 0.54950955570563},
{-0.36834336949252, 0.96458298020975}, { 0.93891760988045, -0.89968353740388},
{ 0.99267657565094, -0.03757034316958}, {-0.94063471614176, 0.41332338538963},
{ 0.99740224117019, -0.16830494996370}, {-0.35899413170555, -0.46633226649613},
{ 0.05237237274947, -0.25640361602661}, { 0.36703583957424, -0.38653265641875},
{ 0.91653180367913, -0.30587628726597}, { 0.69000803499316, 0.90952171386132},
{-0.38658751133527, 0.99501571208985}, {-0.29250814029851, 0.37444994344615},
{-0.60182204677608, 0.86779651036123}, {-0.97418588163217, 0.96468523666475},
{ 0.88461574003963, 0.57508405276414}, { 0.05198933055162, 0.21269661669964},
{-0.53499621979720, 0.97241553731237}, {-0.49429560226497, 0.98183865291903},
{-0.98935142339139, -0.40249159006933}, {-0.98081380091130, -0.72856895534041},
{-0.27338148835532, 0.99950922447209}, { 0.06310802338302, -0.54539587529618},
{-0.20461677199539, -0.14209977628489}, { 0.66223843141647, 0.72528579940326},
{-0.84764345483665, 0.02372316801261}, {-0.89039863483811, 0.88866581484602},
{ 0.95903308477986, 0.76744927173873}, { 0.73504123909879, -0.03747203173192},
{-0.31744434966056, -0.36834111883652}, {-0.34110827591623, 0.40211222807691},
{ 0.47803883714199, -0.39423219786288}, { 0.98299195879514, 0.01989791390047},
{-0.30963073129751, -0.18076720599336}, { 0.99992588229018, -0.26281872094289},
{-0.93149731080767, -0.98313162570490}, { 0.99923472302773, -0.80142993767554},
{-0.26024169633417, -0.75999759855752}, {-0.35712514743563, 0.19298963768574},
{-0.99899084509530, 0.74645156992493}, { 0.86557171579452, 0.55593866696299},
{ 0.33408042438752, 0.86185953874709}, { 0.99010736374716, 0.04602397576623},
{-0.66694269691195, -0.91643611810148}, { 0.64016792079480, 0.15649530836856},
{ 0.99570534804836, 0.45844586038111}, {-0.63431466947340, 0.21079116459234},
{-0.07706847005931, -0.89581437101329}, { 0.98590090577724, 0.88241721133981},
{ 0.80099335254678, -0.36851896710853}, { 0.78368131392666, 0.45506999802597},
{ 0.08707806671691, 0.80938994918745}, {-0.86811883080712, 0.39347308654705},
{-0.39466529740375, -0.66809432114456}, { 0.97875325649683, -0.72467840967746},
{-0.95038560288864, 0.89563219587625}, { 0.17005239424212, 0.54683053962658},
{-0.76910792026848, -0.96226617549298}, { 0.99743281016846, 0.42697157037567},
{ 0.95437383549973, 0.97002324109952}, { 0.99578905365569, -0.54106826257356},
{ 0.28058259829990, -0.85361420634036}, { 0.85256524470573, -0.64567607735589},
{-0.50608540105128, -0.65846015480300}, {-0.97210735183243, -0.23095213067791},
{ 0.95424048234441, -0.99240147091219}, {-0.96926570524023, 0.73775654896574},
{ 0.30872163214726, 0.41514960556126}, {-0.24523839572639, 0.63206633394807},
{-0.33813265086024, -0.38661779441897}, {-0.05826828420146, -0.06940774188029},
{-0.22898461455054, 0.97054853316316}, {-0.18509915019881, 0.47565762892084},
{-0.10488238045009, -0.87769947402394}, {-0.71886586182037, 0.78030982480538},
{ 0.99793873738654, 0.90041310491497}, { 0.57563307626120, -0.91034337352097},
{ 0.28909646383717, 0.96307783970534}, { 0.42188998312520, 0.48148651230437},
{ 0.93335049681047, -0.43537023883588}, {-0.97087374418267, 0.86636445711364},
{ 0.36722871286923, 0.65291654172961}, {-0.81093025665696, 0.08778370229363},
{-0.26240603062237, -0.92774095379098}, { 0.83996497984604, 0.55839849139647},
{-0.99909615720225, -0.96024605713970}, { 0.74649464155061, 0.12144893606462},
{-0.74774595569805, -0.26898062008959}, { 0.95781667469567, -0.79047927052628},
{ 0.95472308713099, -0.08588776019550}, { 0.48708332746299, 0.99999041579432},
{ 0.46332038247497, 0.10964126185063}, {-0.76497004940162, 0.89210929242238},
{ 0.57397389364339, 0.35289703373760}, { 0.75374316974495, 0.96705214651335},
{-0.59174397685714, -0.89405370422752}, { 0.75087906691890, -0.29612672982396},
{-0.98607857336230, 0.25034911730023}, {-0.40761056640505, -0.90045573444695},
{ 0.66929266740477, 0.98629493401748}, {-0.97463695257310, -0.00190223301301},
{ 0.90145509409859, 0.99781390365446}, {-0.87259289048043, 0.99233587353666},
{-0.91529461447692, -0.15698707534206}, {-0.03305738840705, -0.37205262859764},
{ 0.07223051368337, -0.88805001733626}, { 0.99498012188353, 0.97094358113387},
{-0.74904939500519, 0.99985483641521}, { 0.04585228574211, 0.99812337444082},
{-0.89054954257993, -0.31791913188064}, {-0.83782144651251, 0.97637632547466},
{ 0.33454804933804, -0.86231516800408}, {-0.99707579362824, 0.93237990079441},
{-0.22827527843994, 0.18874759397997}, { 0.67248046289143, -0.03646211390569},
{-0.05146538187944, -0.92599700120679}, { 0.99947295749905, 0.93625229707912},
{ 0.66951124390363, 0.98905825623893}, {-0.99602956559179, -0.44654715757688},
{ 0.82104905483590, 0.99540741724928}, { 0.99186510988782, 0.72023001312947},
{-0.65284592392918, 0.52186723253637}, { 0.93885443798188, -0.74895312615259},
{ 0.96735248738388, 0.90891816978629}, {-0.22225968841114, 0.57124029781228},
{-0.44132783753414, -0.92688840659280}, {-0.85694974219574, 0.88844532719844},
{ 0.91783042091762, -0.46356892383970}, { 0.72556974415690, -0.99899555770747},
{-0.99711581834508, 0.58211560180426}, { 0.77638976371966, 0.94321834873819},
{ 0.07717324253925, 0.58638399856595}, {-0.56049829194163, 0.82522301569036},
{ 0.98398893639988, 0.39467440420569}, { 0.47546946844938, 0.68613044836811},
{ 0.65675089314631, 0.18331637134880}, { 0.03273375457980, -0.74933109564108},
{-0.38684144784738, 0.51337349030406}, {-0.97346267944545, -0.96549364384098},
{-0.53282156061942, -0.91423265091354}, { 0.99817310731176, 0.61133572482148},
{-0.50254500772635, -0.88829338134294}, { 0.01995873238855, 0.85223515096765},
{ 0.99930381973804, 0.94578896296649}, { 0.82907767600783, -0.06323442598128},
{-0.58660709669728, 0.96840773806582}, {-0.17573736667267, -0.48166920859485},
{ 0.83434292401346, -0.13023450646997}, { 0.05946491307025, 0.20511047074866},
{ 0.81505484574602, -0.94685947861369}, {-0.44976380954860, 0.40894572671545},
{-0.89746474625671, 0.99846578838537}, { 0.39677256130792, -0.74854668609359},
{-0.07588948563079, 0.74096214084170}, { 0.76343198951445, 0.41746629422634},
{-0.74490104699626, 0.94725911744610}, { 0.64880119792759, 0.41336660830571},
{ 0.62319537462542, -0.93098313552599}, { 0.42215817594807, -0.07712787385208},
{ 0.02704554141885, -0.05417518053666}, { 0.80001773566818, 0.91542195141039},
{-0.79351832348816, -0.36208897989136}, { 0.63872359151636, 0.08128252493444},
{ 0.52890520960295, 0.60048872455592}, { 0.74238552914587, 0.04491915291044},
{ 0.99096131449250, -0.19451182854402}, {-0.80412329643109, -0.88513818199457},
{-0.64612616129736, 0.72198674804544}, { 0.11657770663191, -0.83662833815041},
{-0.95053182488101, -0.96939905138082}, {-0.62228872928622, 0.82767262846661},
{ 0.03004475787316, -0.99738896333384}, {-0.97987214341034, 0.36526129686425},
{-0.99986980746200, -0.36021610299715}, { 0.89110648599879, -0.97894250343044},
{ 0.10407960510582, 0.77357793811619}, { 0.95964737821728, -0.35435818285502},
{ 0.50843233159162, 0.96107691266205}, { 0.17006334670615, -0.76854025314829},
{ 0.25872675063360, 0.99893303933816}, {-0.01115998681937, 0.98496019742444},
{-0.79598702973261, 0.97138411318894}, {-0.99264708948101, -0.99542822402536},
{-0.99829663752818, 0.01877138824311}, {-0.70801016548184, 0.33680685948117},
{-0.70467057786826, 0.93272777501857}, { 0.99846021905254, -0.98725746254433},
{-0.63364968534650, -0.16473594423746}, {-0.16258217500792, -0.95939125400802},
{-0.43645594360633, -0.94805030113284}, {-0.99848471702976, 0.96245166923809},
{-0.16796458968998, -0.98987511890470}, {-0.87979225745213, -0.71725725041680},
{ 0.44183099021786, -0.93568974498761}, { 0.93310180125532, -0.99913308068246},
{-0.93941931782002, -0.56409379640356}, {-0.88590003188677, 0.47624600491382},
{ 0.99971463703691, -0.83889954253462}, {-0.75376385639978, 0.00814643438625},
{ 0.93887685615875, -0.11284528204636}, { 0.85126435782309, 0.52349251543547},
{ 0.39701421446381, 0.81779634174316}, {-0.37024464187437, -0.87071656222959},
{-0.36024828242896, 0.34655735648287}, {-0.93388812549209, -0.84476541096429},
{-0.65298804552119, -0.18439575450921}, { 0.11960319006843, 0.99899346780168},
{ 0.94292565553160, 0.83163906518293}, { 0.75081145286948, -0.35533223142265},
{ 0.56721979748394, -0.24076836414499}, { 0.46857766746029, -0.30140233457198},
{ 0.97312313923635, -0.99548191630031}, {-0.38299976567017, 0.98516909715427},
{ 0.41025800019463, 0.02116736935734}, { 0.09638062008048, 0.04411984381457},
{-0.85283249275397, 0.91475563922421}, { 0.88866808958124, -0.99735267083226},
{-0.48202429536989, -0.96805608884164}, { 0.27572582416567, 0.58634753335832},
{-0.65889129659168, 0.58835634138583}, { 0.98838086953732, 0.99994349600236},
{-0.20651349620689, 0.54593044066355}, {-0.62126416356920, -0.59893681700392},
{ 0.20320105410437, -0.86879180355289}, {-0.97790548600584, 0.96290806999242},
{ 0.11112534735126, 0.21484763313301}, {-0.41368337314182, 0.28216837680365},
{ 0.24133038992960, 0.51294362630238}, {-0.66393410674885, -0.08249679629081},
{-0.53697829178752, -0.97649903936228}, {-0.97224737889348, 0.22081333579837},
{ 0.87392477144549, -0.12796173740361}, { 0.19050361015753, 0.01602615387195},
{-0.46353441212724, -0.95249041539006}, {-0.07064096339021, -0.94479803205886},
{-0.92444085484466, -0.10457590187436}, {-0.83822593578728, -0.01695043208885},
{ 0.75214681811150, -0.99955681042665}, {-0.42102998829339, 0.99720941999394},
{-0.72094786237696, -0.35008961934255}, { 0.78843311019251, 0.52851398958271},
{ 0.97394027897442, -0.26695944086561}, { 0.99206463477946, -0.57010120849429},
{ 0.76789609461795, -0.76519356730966}, {-0.82002421836409, -0.73530179553767},
{ 0.81924990025724, 0.99698425250579}, {-0.26719850873357, 0.68903369776193},
{-0.43311260380975, 0.85321815947490}, { 0.99194979673836, 0.91876249766422},
{-0.80692001248487, -0.32627540663214}, { 0.43080003649976, -0.21919095636638},
{ 0.67709491937357, -0.95478075822906}, { 0.56151770568316, -0.70693811747778},
{ 0.10831862810749, -0.08628837174592}, { 0.91229417540436, -0.65987351408410},
{-0.48972893932274, 0.56289246362686}, {-0.89033658689697, -0.71656563987082},
{ 0.65269447475094, 0.65916004833932}, { 0.67439478141121, -0.81684380846796},
{-0.47770832416973, -0.16789556203025}, {-0.99715979260878, -0.93565784007648},
{-0.90889593602546, 0.62034397054380}, {-0.06618622548177, -0.23812217221359},
{ 0.99430266919728, 0.18812555317553}, { 0.97686402381843, -0.28664534366620},
{ 0.94813650221268, -0.97506640027128}, {-0.95434497492853, -0.79607978501983},
{-0.49104783137150, 0.32895214359663}, { 0.99881175120751, 0.88993983831354},
{ 0.50449166760303, -0.85995072408434}, { 0.47162891065108, -0.18680204049569},
{-0.62081581361840, 0.75000676218956}, {-0.43867015250812, 0.99998069244322},
{ 0.98630563232075, -0.53578899600662}, {-0.61510362277374, -0.89515019899997},
{-0.03841517601843, -0.69888815681179}, {-0.30102157304644, -0.07667808922205},
{ 0.41881284182683, 0.02188098922282}, {-0.86135454941237, 0.98947480909359},
{ 0.67226861393788, -0.13494389011014}, {-0.70737398842068, -0.76547349325992},
{ 0.94044946687963, 0.09026201157416}, {-0.82386352534327, 0.08924768823676},
{-0.32070666698656, 0.50143421908753}, { 0.57593163224487, -0.98966422921509},
{-0.36326018419965, 0.07440243123228}, { 0.99979044674350, -0.14130287347405},
{-0.92366023326932, -0.97979298068180}, {-0.44607178518598, -0.54233252016394},
{ 0.44226800932956, 0.71326756742752}, { 0.03671907158312, 0.63606389366675},
{ 0.52175424682195, -0.85396826735705}, {-0.94701139690956, -0.01826348194255},
{-0.98759606946049, 0.82288714303073}, { 0.87434794743625, 0.89399495655433},
{-0.93412041758744, 0.41374052024363}, { 0.96063943315511, 0.93116709541280},
{ 0.97534253457837, 0.86150930812689}, { 0.99642466504163, 0.70190043427512},
{-0.94705089665984, -0.29580042814306}, { 0.91599807087376, -0.98147830385781},
};
#endif /* AVCODEC_AACSBRDATA_H */

2
libavcodec/avcodec.h
View File

@ -30,7 +30,7 @@
#include "libavutil/avutil.h"
#define LIBAVCODEC_VERSION_MAJOR 52
#define LIBAVCODEC_VERSION_MINOR 56
#define LIBAVCODEC_VERSION_MINOR 57
#define LIBAVCODEC_VERSION_MICRO 0
#define LIBAVCODEC_VERSION_INT AV_VERSION_INT(LIBAVCODEC_VERSION_MAJOR, \

2
libavcodec/mpeg4audio.h
View File

@ -57,7 +57,7 @@ enum AudioObjectType {
AOT_AAC_LC, ///< Y Low Complexity
AOT_AAC_SSR, ///< N (code in SoC repo) Scalable Sample Rate
AOT_AAC_LTP, ///< N (code in SoC repo) Long Term Prediction
AOT_SBR, ///< N (in progress) Spectral Band Replication
AOT_SBR, ///< Y Spectral Band Replication
AOT_AAC_SCALABLE, ///< N Scalable
AOT_TWINVQ, ///< N Twin Vector Quantizer
AOT_CELP, ///< N Code Excited Linear Prediction

187
libavcodec/sbr.h Normal file
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@ -0,0 +1,187 @@
/*
* Spectral Band Replication definitions and structures
* Copyright (c) 2008-2009 Robert Swain ( rob opendot cl )
* Copyright (c) 2010 Alex Converse <alex.converse@gmail.com>
*
* This file is part of 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
*/
/**
* @file libavcodec/sbr.h
* Spectral Band Replication definitions and structures
* @author Robert Swain ( rob opendot cl )
*/
#ifndef AVCODEC_SBR_H
#define AVCODEC_SBR_H
#include <stdint.h>
#include "fft.h"
/**
* Spectral Band Replication header - spectrum parameters that invoke a reset if they differ from the previous header.
*/
typedef struct {
uint8_t bs_start_freq;
uint8_t bs_stop_freq;
uint8_t bs_xover_band;
/**
* @defgroup bs_header_extra_1 Variables associated with bs_header_extra_1
* @{
*/
uint8_t bs_freq_scale;
uint8_t bs_alter_scale;
uint8_t bs_noise_bands;
/** @} */
} SpectrumParameters;
#define SBR_SYNTHESIS_BUF_SIZE ((1280-128)*2)
/**
* Spectral Band Replication per channel data
*/
typedef struct {
/**
* @defgroup bitstream Main bitstream data variables
* @{
*/
unsigned bs_frame_class;
unsigned bs_add_harmonic_flag;
unsigned bs_num_env[2];
uint8_t bs_freq_res[7];
uint8_t bs_var_bord[2];
uint8_t bs_num_rel[2];
uint8_t bs_rel_bord[2][3];
unsigned bs_pointer;
unsigned bs_num_noise;
uint8_t bs_df_env[5];
uint8_t bs_df_noise[2];
uint8_t bs_invf_mode[2][5];
uint8_t bs_add_harmonic[48];
unsigned bs_amp_res;
/** @} */
/**
* @defgroup state State variables
* @{
*/
DECLARE_ALIGNED(16, float, synthesis_filterbank_samples)[SBR_SYNTHESIS_BUF_SIZE];
DECLARE_ALIGNED(16, float, analysis_filterbank_samples) [1312];
int synthesis_filterbank_samples_offset;
///l_APrev and l_A
int e_a[2];
///Chirp factors
float bw_array[5];
///QMF values of the original signal
float W[2][32][32][2];
///QMF output of the HF adjustor
float Y[2][38][64][2];
float g_temp[42][48];
float q_temp[42][48];
uint8_t s_indexmapped[8][48];
///Envelope scalefactors
float env_facs[6][48];
///Noise scalefactors
float noise_facs[3][5];
///Envelope time borders
uint8_t t_env[8];
///Envelope time border of the last envelope of the previous frame
uint8_t t_env_num_env_old;
///Noise time borders
uint8_t t_q[3];
unsigned f_indexnoise;
unsigned f_indexsine;
/** @} */
} SBRData;
/**
* Spectral Band Replication
*/
typedef struct {
int sample_rate;
int start;
int reset;
SpectrumParameters spectrum_params;
int bs_amp_res_header;
/**
* @defgroup bs_header_extra_2 variables associated with bs_header_extra_2
* @{
*/
unsigned bs_limiter_bands;
unsigned bs_limiter_gains;
unsigned bs_interpol_freq;
unsigned bs_smoothing_mode;
/** @} */
unsigned bs_coupling;
unsigned k[5]; ///< k0, k1, k2
///kx', and kx respectively, kx is the first QMF subband where SBR is used.
///kx' is its value from the previous frame
unsigned kx[2];
///M' and M respectively, M is the number of QMF subbands that use SBR.
unsigned m[2];
///The number of frequency bands in f_master
unsigned n_master;
SBRData data[2];
///N_Low and N_High respectively, the number of frequency bands for low and high resolution
unsigned n[2];
///Number of noise floor bands
unsigned n_q;
///Number of limiter bands
unsigned n_lim;
///The master QMF frequency grouping
uint16_t f_master[49];
///Frequency borders for low resolution SBR
uint16_t f_tablelow[25];
///Frequency borders for high resolution SBR
uint16_t f_tablehigh[49];
///Frequency borders for noise floors
uint16_t f_tablenoise[6];
///Frequency borders for the limiter
uint16_t f_tablelim[29];
unsigned num_patches;
uint8_t patch_num_subbands[6];
uint8_t patch_start_subband[6];
///QMF low frequency input to the HF generator
float X_low[32][40][2];
///QMF output of the HF generator
float X_high[64][40][2];
///QMF values of the reconstructed signal
DECLARE_ALIGNED(16, float, X)[2][32][64];
///Zeroth coefficient used to filter the subband signals
float alpha0[64][2];
///First coefficient used to filter the subband signals
float alpha1[64][2];
///Dequantized envelope scalefactors, remapped
float e_origmapped[7][48];
///Dequantized noise scalefactors, remapped
float q_mapped[7][48];
///Sinusoidal presence, remapped
uint8_t s_mapped[7][48];
///Estimated envelope
float e_curr[7][48];
///Amplitude adjusted noise scalefactors
float q_m[7][48];
///Sinusoidal levels
float s_m[7][48];
float gain[7][48];
DECLARE_ALIGNED(16, float, qmf_filter_scratch)[5][64];
RDFTContext rdft;
FFTContext mdct;
} SpectralBandReplication;
#endif /* AVCODEC_SBR_H */