mirror of
https://github.com/FFmpeg/FFmpeg.git
synced 2024-12-23 12:43:46 +02:00
Sync already committed code with that in SoC and commit more OKed hunks of code
Originally committed as revision 14674 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Robert Swain
parent
5f7f9719ac
commit
cc0591dab0
222
libavcodec/aac.c
222
libavcodec/aac.c
@ -82,6 +82,7 @@
|
||||
|
||||
#include "aac.h"
|
||||
#include "aactab.h"
|
||||
#include "aacdectab.h"
|
||||
#include "mpeg4audio.h"
|
||||
|
||||
#include <assert.h>
|
||||
@ -91,6 +92,7 @@
|
||||
|
||||
#ifndef CONFIG_HARDCODED_TABLES
|
||||
static float ff_aac_ivquant_tab[IVQUANT_SIZE];
|
||||
static float ff_aac_pow2sf_tab[316];
|
||||
#endif /* CONFIG_HARDCODED_TABLES */
|
||||
|
||||
static VLC vlc_scalefactors;
|
||||
@ -104,27 +106,29 @@ static VLC vlc_spectral[11];
|
||||
num_assoc_data = get_bits(gb, 3);
|
||||
num_cc = get_bits(gb, 4);
|
||||
|
||||
newpcs->mono_mixdown_tag = get_bits1(gb) ? get_bits(gb, 4) : -1;
|
||||
newpcs->stereo_mixdown_tag = get_bits1(gb) ? get_bits(gb, 4) : -1;
|
||||
if (get_bits1(gb))
|
||||
skip_bits(gb, 4); // mono_mixdown_tag
|
||||
if (get_bits1(gb))
|
||||
skip_bits(gb, 4); // stereo_mixdown_tag
|
||||
|
||||
if (get_bits1(gb)) {
|
||||
newpcs->mixdown_coeff_index = get_bits(gb, 2);
|
||||
newpcs->pseudo_surround = get_bits1(gb);
|
||||
}
|
||||
if (get_bits1(gb))
|
||||
skip_bits(gb, 3); // mixdown_coeff_index and pseudo_surround
|
||||
|
||||
program_config_element_parse_tags(newpcs->che_type[ID_CPE], newpcs->che_type[ID_SCE], AAC_CHANNEL_FRONT, gb, num_front);
|
||||
program_config_element_parse_tags(newpcs->che_type[ID_CPE], newpcs->che_type[ID_SCE], AAC_CHANNEL_SIDE, gb, num_side );
|
||||
program_config_element_parse_tags(newpcs->che_type[ID_CPE], newpcs->che_type[ID_SCE], AAC_CHANNEL_BACK, gb, num_back );
|
||||
program_config_element_parse_tags(NULL, newpcs->che_type[ID_LFE], AAC_CHANNEL_LFE, gb, num_lfe );
|
||||
decode_channel_map(new_che_pos[TYPE_CPE], new_che_pos[TYPE_SCE], AAC_CHANNEL_FRONT, gb, num_front);
|
||||
decode_channel_map(new_che_pos[TYPE_CPE], new_che_pos[TYPE_SCE], AAC_CHANNEL_SIDE, gb, num_side );
|
||||
decode_channel_map(new_che_pos[TYPE_CPE], new_che_pos[TYPE_SCE], AAC_CHANNEL_BACK, gb, num_back );
|
||||
decode_channel_map(NULL, new_che_pos[TYPE_LFE], AAC_CHANNEL_LFE, gb, num_lfe );
|
||||
|
||||
skip_bits_long(gb, 4 * num_assoc_data);
|
||||
|
||||
program_config_element_parse_tags(newpcs->che_type[ID_CCE], newpcs->che_type[ID_CCE], AAC_CHANNEL_CC, gb, num_cc );
|
||||
decode_channel_map(new_che_pos[TYPE_CCE], new_che_pos[TYPE_CCE], AAC_CHANNEL_CC, gb, num_cc );
|
||||
|
||||
align_get_bits(gb);
|
||||
|
||||
/* comment field, first byte is length */
|
||||
skip_bits_long(gb, 8 * get_bits(gb, 8));
|
||||
return 0;
|
||||
}
|
||||
|
||||
static av_cold int aac_decode_init(AVCodecContext * avccontext) {
|
||||
AACContext * ac = avccontext->priv_data;
|
||||
@ -132,6 +136,10 @@ static av_cold int aac_decode_init(AVCodecContext * avccontext) {
|
||||
|
||||
ac->avccontext = avccontext;
|
||||
|
||||
if (avccontext->extradata_size <= 0 ||
|
||||
decode_audio_specific_config(ac, avccontext->extradata, avccontext->extradata_size))
|
||||
return -1;
|
||||
|
||||
avccontext->sample_rate = ac->m4ac.sample_rate;
|
||||
avccontext->frame_size = 1024;
|
||||
|
||||
@ -166,6 +174,8 @@ static av_cold int aac_decode_init(AVCodecContext * avccontext) {
|
||||
#ifndef CONFIG_HARDCODED_TABLES
|
||||
for (i = 1 - IVQUANT_SIZE/2; i < IVQUANT_SIZE/2; i++)
|
||||
ff_aac_ivquant_tab[i + IVQUANT_SIZE/2 - 1] = cbrt(fabs(i)) * i;
|
||||
for (i = 0; i < 316; i++)
|
||||
ff_aac_pow2sf_tab[i] = pow(2, (i - 200)/4.);
|
||||
#endif /* CONFIG_HARDCODED_TABLES */
|
||||
|
||||
INIT_VLC_STATIC(&vlc_scalefactors, 7, sizeof(ff_aac_scalefactor_code)/sizeof(ff_aac_scalefactor_code[0]),
|
||||
@ -200,6 +210,112 @@ static inline float ivquant(int a) {
|
||||
return cbrtf(fabsf(a)) * a;
|
||||
}
|
||||
|
||||
int band_type_run_end[120], GetBitContext * gb, IndividualChannelStream * ics) {
|
||||
int g, idx = 0;
|
||||
const int bits = (ics->window_sequence[0] == EIGHT_SHORT_SEQUENCE) ? 3 : 5;
|
||||
for (g = 0; g < ics->num_window_groups; g++) {
|
||||
int k = 0;
|
||||
while (k < ics->max_sfb) {
|
||||
uint8_t sect_len = k;
|
||||
int sect_len_incr;
|
||||
int sect_band_type = get_bits(gb, 4);
|
||||
if (sect_band_type == 12) {
|
||||
av_log(ac->avccontext, AV_LOG_ERROR, "invalid band type\n");
|
||||
return -1;
|
||||
}
|
||||
while ((sect_len_incr = get_bits(gb, bits)) == (1 << bits)-1)
|
||||
sect_len += sect_len_incr;
|
||||
sect_len += sect_len_incr;
|
||||
if (sect_len > ics->max_sfb) {
|
||||
av_log(ac->avccontext, AV_LOG_ERROR,
|
||||
"Number of bands (%d) exceeds limit (%d).\n",
|
||||
sect_len, ics->max_sfb);
|
||||
return -1;
|
||||
}
|
||||
|
||||
*
|
||||
* @param mix_gain channel gain (Not used by AAC bitstream.)
|
||||
* @param global_gain first scalefactor value as scalefactors are differentially coded
|
||||
* @param band_type array of the used band type
|
||||
* @param band_type_run_end array of the last scalefactor band of a band type run
|
||||
* @param sf array of scalefactors or intensity stereo positions
|
||||
*
|
||||
* @return Returns error status. 0 - OK, !0 - error
|
||||
*/
|
||||
static int decode_scalefactors(AACContext * ac, float sf[120], GetBitContext * gb,
|
||||
float mix_gain, unsigned int global_gain, IndividualChannelStream * ics,
|
||||
enum BandType band_type[120], int band_type_run_end[120]) {
|
||||
const int sf_offset = ac->sf_offset + (ics->window_sequence[0] == EIGHT_SHORT_SEQUENCE ? 12 : 0);
|
||||
int g, i, idx = 0;
|
||||
int offset[3] = { global_gain, global_gain - 90, 100 };
|
||||
int noise_flag = 1;
|
||||
static const char *sf_str[3] = { "Global gain", "Noise gain", "Intensity stereo position" };
|
||||
ics->intensity_present = 0;
|
||||
for (g = 0; g < ics->num_window_groups; g++) {
|
||||
for (i = 0; i < ics->max_sfb;) {
|
||||
int run_end = band_type_run_end[idx];
|
||||
if (band_type[idx] == ZERO_BT) {
|
||||
for(; i < run_end; i++, idx++)
|
||||
sf[idx] = 0.;
|
||||
}else if((band_type[idx] == INTENSITY_BT) || (band_type[idx] == INTENSITY_BT2)) {
|
||||
ics->intensity_present = 1;
|
||||
for(; i < run_end; i++, idx++) {
|
||||
offset[2] += get_vlc2(gb, vlc_scalefactors.table, 7, 3) - 60;
|
||||
if(offset[2] > 255U) {
|
||||
av_log(ac->avccontext, AV_LOG_ERROR,
|
||||
"%s (%d) out of range.\n", sf_str[2], offset[2]);
|
||||
return -1;
|
||||
}
|
||||
sf[idx] = ff_aac_pow2sf_tab[-offset[2] + 300];
|
||||
sf[idx] *= mix_gain;
|
||||
}
|
||||
}else if(band_type[idx] == NOISE_BT) {
|
||||
for(; i < run_end; i++, idx++) {
|
||||
if(noise_flag-- > 0)
|
||||
offset[1] += get_bits(gb, 9) - 256;
|
||||
else
|
||||
offset[1] += get_vlc2(gb, vlc_scalefactors.table, 7, 3) - 60;
|
||||
if(offset[1] > 255U) {
|
||||
av_log(ac->avccontext, AV_LOG_ERROR,
|
||||
"%s (%d) out of range.\n", sf_str[1], offset[1]);
|
||||
return -1;
|
||||
}
|
||||
sf[idx] = -ff_aac_pow2sf_tab[ offset[1] + sf_offset];
|
||||
sf[idx] *= mix_gain;
|
||||
}
|
||||
}else {
|
||||
for(; i < run_end; i++, idx++) {
|
||||
offset[0] += get_vlc2(gb, vlc_scalefactors.table, 7, 3) - 60;
|
||||
if(offset[0] > 255U) {
|
||||
av_log(ac->avccontext, AV_LOG_ERROR,
|
||||
"%s (%d) out of range.\n", sf_str[0], offset[0]);
|
||||
return -1;
|
||||
}
|
||||
sf[idx] = -ff_aac_pow2sf_tab[ offset[0] + sf_offset];
|
||||
sf[idx] *= mix_gain;
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
return 0;
|
||||
}
|
||||
|
||||
/**
|
||||
* Decode pulse data; reference: table 4.7.
|
||||
*/
|
||||
static void decode_pulses(Pulse * pulse, GetBitContext * gb) {
|
||||
int i;
|
||||
pulse->num_pulse = get_bits(gb, 2) + 1;
|
||||
pulse->start = get_bits(gb, 6);
|
||||
for (i = 0; i < pulse->num_pulse; i++) {
|
||||
pulse->offset[i] = get_bits(gb, 5);
|
||||
pulse->amp [i] = get_bits(gb, 4);
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* Add pulses with particular amplitudes to the quantized spectral data; reference: 4.6.3.3.
|
||||
*
|
||||
* @param pulse pointer to pulse data struct
|
||||
* @param icoef array of quantized spectral data
|
||||
*/
|
||||
@ -213,18 +329,97 @@ static void add_pulses(int icoef[1024], const Pulse * pulse, const IndividualCha
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* Parse 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(ac->avccontext, AV_LOG_DEBUG, "aac: SBR not yet supported.\n");
|
||||
skip_bits_long(gb, 8*cnt - 4); // -4 due to reading extension type
|
||||
return cnt;
|
||||
}
|
||||
|
||||
int crc_flag = 0;
|
||||
int res = cnt;
|
||||
switch (get_bits(gb, 4)) { // extension type
|
||||
case EXT_SBR_DATA_CRC:
|
||||
crc_flag++;
|
||||
case EXT_SBR_DATA:
|
||||
res = decode_sbr_extension(ac, gb, crc_flag, cnt);
|
||||
break;
|
||||
case EXT_DYNAMIC_RANGE:
|
||||
res = decode_dynamic_range(&ac->che_drc, gb, cnt);
|
||||
break;
|
||||
case EXT_FILL:
|
||||
case EXT_FILL_DATA:
|
||||
case EXT_DATA_ELEMENT:
|
||||
default:
|
||||
skip_bits_long(gb, 8*cnt - 4);
|
||||
break;
|
||||
};
|
||||
return res;
|
||||
}
|
||||
|
||||
/**
|
||||
* Apply dependent channel coupling (applied before IMDCT).
|
||||
*
|
||||
* @param index index into coupling gain array
|
||||
*/
|
||||
static void apply_dependent_coupling(AACContext * ac, SingleChannelElement * sce, ChannelElement * cc, int index) {
|
||||
IndividualChannelStream * ics = &cc->ch[0].ics;
|
||||
const uint16_t * offsets = ics->swb_offset;
|
||||
float * dest = sce->coeffs;
|
||||
const float * src = cc->ch[0].coeffs;
|
||||
int g, i, group, k, idx = 0;
|
||||
if(ac->m4ac.object_type == AOT_AAC_LTP) {
|
||||
av_log(ac->avccontext, AV_LOG_ERROR,
|
||||
"Dependent coupling is not supported together with LTP\n");
|
||||
return;
|
||||
}
|
||||
for (g = 0; g < ics->num_window_groups; g++) {
|
||||
for (i = 0; i < ics->max_sfb; i++, idx++) {
|
||||
if (cc->ch[0].band_type[idx] != ZERO_BT) {
|
||||
float gain = cc->coup.gain[index][idx] * sce->mixing_gain;
|
||||
for (group = 0; group < ics->group_len[g]; group++) {
|
||||
for (k = offsets[i]; k < offsets[i+1]; k++) {
|
||||
// XXX dsputil-ize
|
||||
dest[group*128+k] += gain * src[group*128+k];
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
dest += ics->group_len[g]*128;
|
||||
src += ics->group_len[g]*128;
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* Apply independent channel coupling (applied after IMDCT).
|
||||
*
|
||||
* @param index index into coupling gain array
|
||||
*/
|
||||
static void apply_independent_coupling(AACContext * ac, SingleChannelElement * sce, ChannelElement * cc, int index) {
|
||||
int i;
|
||||
float gain = cc->coup.gain[index][0] * sce->mixing_gain;
|
||||
for (i = 0; i < 1024; i++)
|
||||
sce->ret[i] += gain * (cc->ch[0].ret[i] - ac->add_bias);
|
||||
}
|
||||
|
||||
static av_cold int aac_decode_close(AVCodecContext * avccontext) {
|
||||
AACContext * ac = avccontext->priv_data;
|
||||
int i, j;
|
||||
|
||||
for (i = 0; i < MAX_TAGID; i++) {
|
||||
for (i = 0; i < MAX_ELEM_ID; i++) {
|
||||
for(j = 0; j < 4; j++)
|
||||
av_freep(&ac->che[j][i]);
|
||||
}
|
||||
|
||||
ff_mdct_end(&ac->mdct);
|
||||
ff_mdct_end(&ac->mdct_small);
|
||||
av_freep(&ac->interleaved_output);
|
||||
return 0 ;
|
||||
}
|
||||
|
||||
@ -238,4 +433,5 @@ AVCodec aac_decoder = {
|
||||
aac_decode_close,
|
||||
aac_decode_frame,
|
||||
.long_name = NULL_IF_CONFIG_SMALL("Advanced Audio Coding"),
|
||||
.sample_fmts = (enum SampleFormat[]){SAMPLE_FMT_S16,SAMPLE_FMT_NONE},
|
||||
};
|
||||
|
||||
@ -42,8 +42,49 @@
|
||||
ff_aac_spectral_codes[num], sizeof(ff_aac_spectral_codes[num][0]), sizeof(ff_aac_spectral_codes[num][0]), \
|
||||
size);
|
||||
|
||||
#define MAX_CHANNELS 64
|
||||
|
||||
#define IVQUANT_SIZE 1024
|
||||
|
||||
enum AudioObjectType {
|
||||
AOT_NULL,
|
||||
// Support? Name
|
||||
AOT_AAC_MAIN, ///< Y Main
|
||||
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_AAC_SCALABLE, ///< N Scalable
|
||||
AOT_TWINVQ, ///< N Twin Vector Quantizer
|
||||
AOT_CELP, ///< N Code Excited Linear Prediction
|
||||
AOT_HVXC, ///< N Harmonic Vector eXcitation Coding
|
||||
AOT_TTSI = 12, ///< N Text-To-Speech Interface
|
||||
AOT_MAINSYNTH, ///< N Main Synthesis
|
||||
AOT_WAVESYNTH, ///< N Wavetable Synthesis
|
||||
AOT_MIDI, ///< N General MIDI
|
||||
AOT_SAFX, ///< N Algorithmic Synthesis and Audio Effects
|
||||
AOT_ER_AAC_LC, ///< N Error Resilient Low Complexity
|
||||
AOT_ER_AAC_LTP = 19, ///< N Error Resilient Long Term Prediction
|
||||
AOT_ER_AAC_SCALABLE, ///< N Error Resilient Scalable
|
||||
AOT_ER_TWINVQ, ///< N Error Resilient Twin Vector Quantizer
|
||||
AOT_ER_BSAC, ///< N Error Resilient Bit-Sliced Arithmetic Coding
|
||||
AOT_ER_AAC_LD, ///< N Error Resilient Low Delay
|
||||
AOT_ER_CELP, ///< N Error Resilient Code Excited Linear Prediction
|
||||
AOT_ER_HVXC, ///< N Error Resilient Harmonic Vector eXcitation Coding
|
||||
AOT_ER_HILN, ///< N Error Resilient Harmonic and Individual Lines plus Noise
|
||||
AOT_ER_PARAM, ///< N Error Resilient Parametric
|
||||
AOT_SSC, ///< N SinuSoidal Coding
|
||||
};
|
||||
|
||||
enum ExtensionPayloadID {
|
||||
EXT_FILL,
|
||||
EXT_FILL_DATA,
|
||||
EXT_DATA_ELEMENT,
|
||||
EXT_DYNAMIC_RANGE = 0xb,
|
||||
EXT_SBR_DATA = 0xd,
|
||||
EXT_SBR_DATA_CRC = 0xe,
|
||||
};
|
||||
|
||||
enum WindowSequence {
|
||||
ONLY_LONG_SEQUENCE,
|
||||
LONG_START_SEQUENCE,
|
||||
@ -51,7 +92,18 @@ enum WindowSequence {
|
||||
LONG_STOP_SEQUENCE,
|
||||
};
|
||||
|
||||
enum ChannelType {
|
||||
enum BandType {
|
||||
ZERO_BT = 0, ///< Scalefactors and spectral data are all zero.
|
||||
FIRST_PAIR_BT = 5, ///< This and later band types encode two values (rather than four) with one code word.
|
||||
ESC_BT = 11, ///< Spectral data are coded with an escape sequence.
|
||||
NOISE_BT = 13, ///< Spectral data are scaled white noise not coded in the bitstream.
|
||||
INTENSITY_BT2 = 14, ///< Scalefactor data are intensity stereo positions.
|
||||
INTENSITY_BT = 15, ///< Scalefactor data are intensity stereo positions.
|
||||
};
|
||||
|
||||
#define IS_CODEBOOK_UNSIGNED(x) ((x - 1) & 10)
|
||||
|
||||
enum ChannelPosition {
|
||||
AAC_CHANNEL_FRONT = 1,
|
||||
AAC_CHANNEL_SIDE = 2,
|
||||
AAC_CHANNEL_BACK = 3,
|
||||
@ -59,12 +111,33 @@ enum ChannelType {
|
||||
AAC_CHANNEL_CC = 5,
|
||||
};
|
||||
|
||||
typedef struct {
|
||||
int num_pulse;
|
||||
int start;
|
||||
int offset[4];
|
||||
int amp[4];
|
||||
} Pulse;
|
||||
|
||||
/**
|
||||
* coupling parameters
|
||||
*/
|
||||
typedef struct {
|
||||
|
||||
/**
|
||||
* main AAC context
|
||||
*/
|
||||
typedef struct {
|
||||
AVCodecContext * avccontext;
|
||||
|
||||
MPEG4AudioConfig m4ac;
|
||||
|
||||
int is_saved; ///< Set if elements have stored overlap from previous frame.
|
||||
DynamicRangeControl che_drc;
|
||||
|
||||
enum ChannelPosition che_pos[4][MAX_ELEM_ID]; /**< channel element channel mapping with the
|
||||
* first index as the first 4 raw data block types
|
||||
*/
|
||||
|
||||
/**
|
||||
* @defgroup tables Computed / set up during initialization.
|
||||
* @{
|
||||
@ -75,9 +148,10 @@ typedef struct {
|
||||
/** @} */
|
||||
|
||||
/**
|
||||
* @defgroup output Members used for output interleaving and down-mixing.
|
||||
* @defgroup output Members used for output interleaving.
|
||||
* @{
|
||||
*/
|
||||
float *output_data[MAX_CHANNELS]; ///< Points to each element's 'ret' buffer (PCM output).
|
||||
float add_bias; ///< offset for dsp.float_to_int16
|
||||
float sf_scale; ///< Pre-scale for correct IMDCT and dsp.float_to_int16.
|
||||
int sf_offset; ///< offset into pow2sf_tab as appropriate for dsp.float_to_int16
|
||||
|
||||
159
libavcodec/aacdectab.h
Normal file
159
libavcodec/aacdectab.h
Normal file
@ -0,0 +1,159 @@
|
||||
/*
|
||||
* AAC decoder data
|
||||
* Copyright (c) 2005-2006 Oded Shimon ( ods15 ods15 dyndns org )
|
||||
* Copyright (c) 2006-2007 Maxim Gavrilov ( maxim.gavrilov 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 aacdectab.h
|
||||
* AAC decoder data
|
||||
* @author Oded Shimon ( ods15 ods15 dyndns org )
|
||||
* @author Maxim Gavrilov ( maxim.gavrilov gmail com )
|
||||
*/
|
||||
|
||||
#ifndef FFMPEG_AACDECTAB_H
|
||||
#define FFMPEG_AACDECTAB_H
|
||||
|
||||
#include "aac.h"
|
||||
|
||||
#include <stdint.h>
|
||||
|
||||
/* @name swb_offsets
|
||||
* Sample offset into the window indicating the beginning of a scalefactor
|
||||
* window band
|
||||
*
|
||||
* scalefactor window band - term for scalefactor bands within a window,
|
||||
* given in Table 4.110 to Table 4.128.
|
||||
*
|
||||
* scalefactor band - a set of spectral coefficients which are scaled by one
|
||||
* scalefactor. In case of EIGHT_SHORT_SEQUENCE and grouping a scalefactor band
|
||||
* may contain several scalefactor window bands of corresponding frequency. For
|
||||
* all other window_sequences scalefactor bands and scalefactor window bands are
|
||||
* identical.
|
||||
* @{
|
||||
*/
|
||||
|
||||
static const uint16_t swb_offset_1024_96[] = {
|
||||
0, 4, 8, 12, 16, 20, 24, 28,
|
||||
32, 36, 40, 44, 48, 52, 56, 64,
|
||||
72, 80, 88, 96, 108, 120, 132, 144,
|
||||
156, 172, 188, 212, 240, 276, 320, 384,
|
||||
448, 512, 576, 640, 704, 768, 832, 896,
|
||||
960, 1024
|
||||
};
|
||||
|
||||
static const uint16_t swb_offset_128_96[] = {
|
||||
0, 4, 8, 12, 16, 20, 24, 32, 40, 48, 64, 92, 128
|
||||
};
|
||||
|
||||
static const uint16_t swb_offset_1024_64[] = {
|
||||
0, 4, 8, 12, 16, 20, 24, 28,
|
||||
32, 36, 40, 44, 48, 52, 56, 64,
|
||||
72, 80, 88, 100, 112, 124, 140, 156,
|
||||
172, 192, 216, 240, 268, 304, 344, 384,
|
||||
424, 464, 504, 544, 584, 624, 664, 704,
|
||||
744, 784, 824, 864, 904, 944, 984, 1024
|
||||
};
|
||||
|
||||
static const uint16_t swb_offset_1024_48[] = {
|
||||
0, 4, 8, 12, 16, 20, 24, 28,
|
||||
32, 36, 40, 48, 56, 64, 72, 80,
|
||||
88, 96, 108, 120, 132, 144, 160, 176,
|
||||
196, 216, 240, 264, 292, 320, 352, 384,
|
||||
416, 448, 480, 512, 544, 576, 608, 640,
|
||||
672, 704, 736, 768, 800, 832, 864, 896,
|
||||
928, 1024
|
||||
};
|
||||
|
||||
static const uint16_t swb_offset_128_48[] = {
|
||||
0, 4, 8, 12, 16, 20, 28, 36,
|
||||
44, 56, 68, 80, 96, 112, 128
|
||||
};
|
||||
|
||||
static const uint16_t swb_offset_1024_32[] = {
|
||||
0, 4, 8, 12, 16, 20, 24, 28,
|
||||
32, 36, 40, 48, 56, 64, 72, 80,
|
||||
88, 96, 108, 120, 132, 144, 160, 176,
|
||||
196, 216, 240, 264, 292, 320, 352, 384,
|
||||
416, 448, 480, 512, 544, 576, 608, 640,
|
||||
672, 704, 736, 768, 800, 832, 864, 896,
|
||||
928, 960, 992, 1024
|
||||
};
|
||||
|
||||
static const uint16_t swb_offset_1024_24[] = {
|
||||
0, 4, 8, 12, 16, 20, 24, 28,
|
||||
32, 36, 40, 44, 52, 60, 68, 76,
|
||||
84, 92, 100, 108, 116, 124, 136, 148,
|
||||
160, 172, 188, 204, 220, 240, 260, 284,
|
||||
308, 336, 364, 396, 432, 468, 508, 552,
|
||||
600, 652, 704, 768, 832, 896, 960, 1024
|
||||
};
|
||||
|
||||
static const uint16_t swb_offset_128_24[] = {
|
||||
0, 4, 8, 12, 16, 20, 24, 28,
|
||||
36, 44, 52, 64, 76, 92, 108, 128
|
||||
};
|
||||
|
||||
static const uint16_t swb_offset_1024_16[] = {
|
||||
0, 8, 16, 24, 32, 40, 48, 56,
|
||||
64, 72, 80, 88, 100, 112, 124, 136,
|
||||
148, 160, 172, 184, 196, 212, 228, 244,
|
||||
260, 280, 300, 320, 344, 368, 396, 424,
|
||||
456, 492, 532, 572, 616, 664, 716, 772,
|
||||
832, 896, 960, 1024
|
||||
};
|
||||
|
||||
static const uint16_t swb_offset_128_16[] = {
|
||||
0, 4, 8, 12, 16, 20, 24, 28,
|
||||
32, 40, 48, 60, 72, 88, 108, 128
|
||||
};
|
||||
|
||||
static const uint16_t swb_offset_1024_8[] = {
|
||||
0, 12, 24, 36, 48, 60, 72, 84,
|
||||
96, 108, 120, 132, 144, 156, 172, 188,
|
||||
204, 220, 236, 252, 268, 288, 308, 328,
|
||||
348, 372, 396, 420, 448, 476, 508, 544,
|
||||
580, 620, 664, 712, 764, 820, 880, 944,
|
||||
1024
|
||||
};
|
||||
|
||||
static const uint16_t swb_offset_128_8[] = {
|
||||
0, 4, 8, 12, 16, 20, 24, 28,
|
||||
36, 44, 52, 60, 72, 88, 108, 128
|
||||
};
|
||||
|
||||
static const uint16_t *swb_offset_1024[] = {
|
||||
swb_offset_1024_96, swb_offset_1024_96, swb_offset_1024_64,
|
||||
swb_offset_1024_48, swb_offset_1024_48, swb_offset_1024_32,
|
||||
swb_offset_1024_24, swb_offset_1024_24, swb_offset_1024_16,
|
||||
swb_offset_1024_16, swb_offset_1024_16, swb_offset_1024_8
|
||||
};
|
||||
|
||||
static const uint16_t *swb_offset_128[] = {
|
||||
/* The last entry on the following row is swb_offset_128_64 but is a
|
||||
duplicate of swb_offset_128_96. */
|
||||
swb_offset_128_96, swb_offset_128_96, swb_offset_128_96,
|
||||
swb_offset_128_48, swb_offset_128_48, swb_offset_128_48,
|
||||
swb_offset_128_24, swb_offset_128_24, swb_offset_128_16,
|
||||
swb_offset_128_16, swb_offset_128_16, swb_offset_128_8
|
||||
};
|
||||
|
||||
// @}
|
||||
|
||||
#endif /* FFMPEG_AACDECTAB_H */
|
||||
@ -27,6 +27,7 @@
|
||||
* @author Maxim Gavrilov ( maxim.gavrilov gmail com )
|
||||
*/
|
||||
|
||||
#include "libavutil/mem.h"
|
||||
#include "aac.h"
|
||||
|
||||
#include <stdint.h>
|
||||
@ -795,4 +796,86 @@ const float ff_aac_ivquant_tab[IVQUANT_SIZE] = {
|
||||
4064.0312908, 4074.6805676, 4085.3368071, 4096.0000000,
|
||||
};
|
||||
|
||||
const float ff_aac_pow2sf_tab[316] = {
|
||||
8.88178420e-16, 1.05622810e-15, 1.25607397e-15, 1.49373210e-15,
|
||||
1.77635684e-15, 2.11245619e-15, 2.51214793e-15, 2.98746420e-15,
|
||||
3.55271368e-15, 4.22491238e-15, 5.02429587e-15, 5.97492839e-15,
|
||||
7.10542736e-15, 8.44982477e-15, 1.00485917e-14, 1.19498568e-14,
|
||||
1.42108547e-14, 1.68996495e-14, 2.00971835e-14, 2.38997136e-14,
|
||||
2.84217094e-14, 3.37992991e-14, 4.01943669e-14, 4.77994272e-14,
|
||||
5.68434189e-14, 6.75985982e-14, 8.03887339e-14, 9.55988543e-14,
|
||||
1.13686838e-13, 1.35197196e-13, 1.60777468e-13, 1.91197709e-13,
|
||||
2.27373675e-13, 2.70394393e-13, 3.21554936e-13, 3.82395417e-13,
|
||||
4.54747351e-13, 5.40788785e-13, 6.43109871e-13, 7.64790834e-13,
|
||||
9.09494702e-13, 1.08157757e-12, 1.28621974e-12, 1.52958167e-12,
|
||||
1.81898940e-12, 2.16315514e-12, 2.57243948e-12, 3.05916334e-12,
|
||||
3.63797881e-12, 4.32631028e-12, 5.14487897e-12, 6.11832668e-12,
|
||||
7.27595761e-12, 8.65262056e-12, 1.02897579e-11, 1.22366534e-11,
|
||||
1.45519152e-11, 1.73052411e-11, 2.05795159e-11, 2.44733067e-11,
|
||||
2.91038305e-11, 3.46104823e-11, 4.11590317e-11, 4.89466134e-11,
|
||||
5.82076609e-11, 6.92209645e-11, 8.23180635e-11, 9.78932268e-11,
|
||||
1.16415322e-10, 1.38441929e-10, 1.64636127e-10, 1.95786454e-10,
|
||||
2.32830644e-10, 2.76883858e-10, 3.29272254e-10, 3.91572907e-10,
|
||||
4.65661287e-10, 5.53767716e-10, 6.58544508e-10, 7.83145814e-10,
|
||||
9.31322575e-10, 1.10753543e-09, 1.31708902e-09, 1.56629163e-09,
|
||||
1.86264515e-09, 2.21507086e-09, 2.63417803e-09, 3.13258326e-09,
|
||||
3.72529030e-09, 4.43014173e-09, 5.26835606e-09, 6.26516652e-09,
|
||||
7.45058060e-09, 8.86028346e-09, 1.05367121e-08, 1.25303330e-08,
|
||||
1.49011612e-08, 1.77205669e-08, 2.10734243e-08, 2.50606661e-08,
|
||||
2.98023224e-08, 3.54411338e-08, 4.21468485e-08, 5.01213321e-08,
|
||||
5.96046448e-08, 7.08822677e-08, 8.42936970e-08, 1.00242664e-07,
|
||||
1.19209290e-07, 1.41764535e-07, 1.68587394e-07, 2.00485328e-07,
|
||||
2.38418579e-07, 2.83529071e-07, 3.37174788e-07, 4.00970657e-07,
|
||||
4.76837158e-07, 5.67058141e-07, 6.74349576e-07, 8.01941314e-07,
|
||||
9.53674316e-07, 1.13411628e-06, 1.34869915e-06, 1.60388263e-06,
|
||||
1.90734863e-06, 2.26823256e-06, 2.69739830e-06, 3.20776526e-06,
|
||||
3.81469727e-06, 4.53646513e-06, 5.39479661e-06, 6.41553051e-06,
|
||||
7.62939453e-06, 9.07293026e-06, 1.07895932e-05, 1.28310610e-05,
|
||||
1.52587891e-05, 1.81458605e-05, 2.15791864e-05, 2.56621220e-05,
|
||||
3.05175781e-05, 3.62917210e-05, 4.31583729e-05, 5.13242441e-05,
|
||||
6.10351562e-05, 7.25834421e-05, 8.63167458e-05, 1.02648488e-04,
|
||||
1.22070312e-04, 1.45166884e-04, 1.72633492e-04, 2.05296976e-04,
|
||||
2.44140625e-04, 2.90333768e-04, 3.45266983e-04, 4.10593953e-04,
|
||||
4.88281250e-04, 5.80667537e-04, 6.90533966e-04, 8.21187906e-04,
|
||||
9.76562500e-04, 1.16133507e-03, 1.38106793e-03, 1.64237581e-03,
|
||||
1.95312500e-03, 2.32267015e-03, 2.76213586e-03, 3.28475162e-03,
|
||||
3.90625000e-03, 4.64534029e-03, 5.52427173e-03, 6.56950324e-03,
|
||||
7.81250000e-03, 9.29068059e-03, 1.10485435e-02, 1.31390065e-02,
|
||||
1.56250000e-02, 1.85813612e-02, 2.20970869e-02, 2.62780130e-02,
|
||||
3.12500000e-02, 3.71627223e-02, 4.41941738e-02, 5.25560260e-02,
|
||||
6.25000000e-02, 7.43254447e-02, 8.83883476e-02, 1.05112052e-01,
|
||||
1.25000000e-01, 1.48650889e-01, 1.76776695e-01, 2.10224104e-01,
|
||||
2.50000000e-01, 2.97301779e-01, 3.53553391e-01, 4.20448208e-01,
|
||||
5.00000000e-01, 5.94603558e-01, 7.07106781e-01, 8.40896415e-01,
|
||||
1.00000000e+00, 1.18920712e+00, 1.41421356e+00, 1.68179283e+00,
|
||||
2.00000000e+00, 2.37841423e+00, 2.82842712e+00, 3.36358566e+00,
|
||||
4.00000000e+00, 4.75682846e+00, 5.65685425e+00, 6.72717132e+00,
|
||||
8.00000000e+00, 9.51365692e+00, 1.13137085e+01, 1.34543426e+01,
|
||||
1.60000000e+01, 1.90273138e+01, 2.26274170e+01, 2.69086853e+01,
|
||||
3.20000000e+01, 3.80546277e+01, 4.52548340e+01, 5.38173706e+01,
|
||||
6.40000000e+01, 7.61092554e+01, 9.05096680e+01, 1.07634741e+02,
|
||||
1.28000000e+02, 1.52218511e+02, 1.81019336e+02, 2.15269482e+02,
|
||||
2.56000000e+02, 3.04437021e+02, 3.62038672e+02, 4.30538965e+02,
|
||||
5.12000000e+02, 6.08874043e+02, 7.24077344e+02, 8.61077929e+02,
|
||||
1.02400000e+03, 1.21774809e+03, 1.44815469e+03, 1.72215586e+03,
|
||||
2.04800000e+03, 2.43549617e+03, 2.89630938e+03, 3.44431172e+03,
|
||||
4.09600000e+03, 4.87099234e+03, 5.79261875e+03, 6.88862343e+03,
|
||||
8.19200000e+03, 9.74198469e+03, 1.15852375e+04, 1.37772469e+04,
|
||||
1.63840000e+04, 1.94839694e+04, 2.31704750e+04, 2.75544937e+04,
|
||||
3.27680000e+04, 3.89679387e+04, 4.63409500e+04, 5.51089875e+04,
|
||||
6.55360000e+04, 7.79358775e+04, 9.26819000e+04, 1.10217975e+05,
|
||||
1.31072000e+05, 1.55871755e+05, 1.85363800e+05, 2.20435950e+05,
|
||||
2.62144000e+05, 3.11743510e+05, 3.70727600e+05, 4.40871900e+05,
|
||||
5.24288000e+05, 6.23487020e+05, 7.41455200e+05, 8.81743800e+05,
|
||||
1.04857600e+06, 1.24697404e+06, 1.48291040e+06, 1.76348760e+06,
|
||||
2.09715200e+06, 2.49394808e+06, 2.96582080e+06, 3.52697520e+06,
|
||||
4.19430400e+06, 4.98789616e+06, 5.93164160e+06, 7.05395040e+06,
|
||||
8.38860800e+06, 9.97579232e+06, 1.18632832e+07, 1.41079008e+07,
|
||||
1.67772160e+07, 1.99515846e+07, 2.37265664e+07, 2.82158016e+07,
|
||||
3.35544320e+07, 3.99031693e+07, 4.74531328e+07, 5.64316032e+07,
|
||||
6.71088640e+07, 7.98063385e+07, 9.49062656e+07, 1.12863206e+08,
|
||||
1.34217728e+08, 1.59612677e+08, 1.89812531e+08, 2.25726413e+08,
|
||||
2.68435456e+08, 3.19225354e+08, 3.79625062e+08, 4.51452825e+08,
|
||||
};
|
||||
|
||||
#endif /* CONFIG_HARDCODED_TABLES */
|
||||
|
||||
@ -30,6 +30,7 @@
|
||||
#ifndef FFMPEG_AACTAB_H
|
||||
#define FFMPEG_AACTAB_H
|
||||
|
||||
#include "libavutil/mem.h"
|
||||
#include "aac.h"
|
||||
|
||||
#include <stdint.h>
|
||||
@ -45,6 +46,7 @@ extern const int8_t *ff_aac_codebook_vectors[];
|
||||
|
||||
#ifdef CONFIG_HARDCODED_TABLES
|
||||
extern const float ff_aac_ivquant_tab[IVQUANT_SIZE];
|
||||
extern const float ff_aac_pow2sf_tab[316];
|
||||
#endif /* CONFIG_HARDCODED_TABLES */
|
||||
|
||||
#endif /* FFMPEG_AACTAB_H */
|
||||
|
||||
Loading…
Reference in New Issue
Block a user