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aac: Add support for Enhanced AAC Low Delay (ER AAC ELD).

Browse Source 
This does not include support for LD SBR, epTool, data resilience, nor
the 960 transform family.
This commit is contained in:
Alex Converse 2013-10-14 13:51:46 -07:00
parent f457edb697
commit b3be41ca82
6 changed files with 661 additions and 35 deletions
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1
Changelog
View File

@ -38,6 +38,7 @@ version 10:
- Low Delay AAC (ER AAC LD) decoding
- mux chapters in ASF files
- Opus in Ogg demuxing
- Enhanced Low Delay AAC (ER AAC ELD) decoding (no LD SBR support)
version 9:

2
libavcodec/aac.h
View File

@ -234,7 +234,7 @@ typedef struct SingleChannelElement {
int sf_idx[128]; ///< scalefactor indices (used by encoder)
uint8_t zeroes[128]; ///< band is not coded (used by encoder)
DECLARE_ALIGNED(32, float, coeffs)[1024]; ///< coefficients for IMDCT
DECLARE_ALIGNED(32, float, saved)[1024]; ///< overlap
DECLARE_ALIGNED(32, float, saved)[1536]; ///< overlap
DECLARE_ALIGNED(32, float, ret_buf)[2048]; ///< PCM output buffer
DECLARE_ALIGNED(16, float, ltp_state)[3072]; ///< time signal for LTP
PredictorState predictor_state[MAX_PREDICTORS];

207
libavcodec/aacdec.c
View File

@ -2,6 +2,7 @@
* AAC decoder
* Copyright (c) 2005-2006 Oded Shimon ( ods15 ods15 dyndns org )
* Copyright (c) 2006-2007 Maxim Gavrilov ( maxim.gavrilov gmail com )
* Copyright (c) 2008-2013 Alex Converse <alex.converse@gmail.com>
*
* AAC LATM decoder
* Copyright (c) 2008-2010 Paul Kendall <paul@kcbbs.gen.nz>
@ -778,6 +779,67 @@ static int decode_ga_specific_config(AACContext *ac, AVCodecContext *avctx,
return 0;
}
static int decode_eld_specific_config(AACContext *ac, AVCodecContext *avctx,
GetBitContext *gb,
MPEG4AudioConfig *m4ac,
int channel_config)
{
int ret, ep_config, res_flags;
uint8_t layout_map[MAX_ELEM_ID*4][3];
int tags = 0;
const int ELDEXT_TERM = 0;
m4ac->ps = 0;
m4ac->sbr = 0;
if (get_bits1(gb)) { // frameLengthFlag
avpriv_request_sample(avctx, "960/120 MDCT window");
return AVERROR_PATCHWELCOME;
}
res_flags = get_bits(gb, 3);
if (res_flags) {
avpriv_report_missing_feature(avctx, AV_LOG_ERROR,
"AAC data resilience (flags %x)",
res_flags);
return AVERROR_PATCHWELCOME;
}
if (get_bits1(gb)) { // ldSbrPresentFlag
avpriv_report_missing_feature(avctx, AV_LOG_ERROR,
"Low Delay SBR");
return AVERROR_PATCHWELCOME;
}
while (get_bits(gb, 4) != ELDEXT_TERM) {
int len = get_bits(gb, 4);
if (len == 15)
len += get_bits(gb, 8);
if (len == 15 + 255)
len += get_bits(gb, 16);
if (get_bits_left(gb) < len * 8 + 4) {
av_log(ac->avctx, AV_LOG_ERROR, overread_err);
return AVERROR_INVALIDDATA;
}
skip_bits_long(gb, 8 * len);
}
if ((ret = set_default_channel_config(avctx, layout_map,
&tags, channel_config)))
return ret;
if (ac && (ret = output_configure(ac, layout_map, tags, OC_GLOBAL_HDR, 0)))
return ret;
ep_config = get_bits(gb, 2);
if (ep_config) {
avpriv_report_missing_feature(avctx, AV_LOG_ERROR,
"epConfig %d", ep_config);
return AVERROR_PATCHWELCOME;
}
return 0;
}
/**
* Decode audio specific configuration; reference: table 1.13.
*
@ -836,6 +898,11 @@ static int decode_audio_specific_config(AACContext *ac,
m4ac, m4ac->chan_config)) < 0)
return ret;
break;
case AOT_ER_AAC_ELD:
if ((ret = decode_eld_specific_config(ac, avctx, &gb,
m4ac, m4ac->chan_config)) < 0)
return ret;
break;
default:
avpriv_report_missing_feature(avctx, AV_LOG_ERROR,
"Audio object type %s%d",
@ -1067,22 +1134,25 @@ static void decode_ltp(LongTermPrediction *ltp,
static int decode_ics_info(AACContext *ac, IndividualChannelStream *ics,
GetBitContext *gb)
{
if (get_bits1(gb)) {
av_log(ac->avctx, AV_LOG_ERROR, "Reserved bit set.\n");
return AVERROR_INVALIDDATA;
int aot = ac->oc[1].m4ac.object_type;
if (aot != AOT_ER_AAC_ELD) {
if (get_bits1(gb)) {
av_log(ac->avctx, AV_LOG_ERROR, "Reserved bit set.\n");
return AVERROR_INVALIDDATA;
}
ics->window_sequence[1] = ics->window_sequence[0];
ics->window_sequence[0] = get_bits(gb, 2);
if (aot == AOT_ER_AAC_LD &&
ics->window_sequence[0] != ONLY_LONG_SEQUENCE) {
av_log(ac->avctx, AV_LOG_ERROR,
"AAC LD is only defined for ONLY_LONG_SEQUENCE but "
"window sequence %d found.\n", ics->window_sequence[0]);
ics->window_sequence[0] = ONLY_LONG_SEQUENCE;
return AVERROR_INVALIDDATA;
}
ics->use_kb_window[1] = ics->use_kb_window[0];
ics->use_kb_window[0] = get_bits1(gb);
}
ics->window_sequence[1] = ics->window_sequence[0];
ics->window_sequence[0] = get_bits(gb, 2);
if (ac->oc[1].m4ac.object_type == AOT_ER_AAC_LD &&
ics->window_sequence[0] != ONLY_LONG_SEQUENCE) {
av_log(ac->avctx, AV_LOG_ERROR,
"AAC LD is only defined for ONLY_LONG_SEQUENCE but "
"window sequence %d found.\n", ics->window_sequence[0]);
ics->window_sequence[0] = ONLY_LONG_SEQUENCE;
return AVERROR_INVALIDDATA;
}
ics->use_kb_window[1] = ics->use_kb_window[0];
ics->use_kb_window[0] = get_bits1(gb);
ics->num_window_groups = 1;
ics->group_len[0] = 1;
if (ics->window_sequence[0] == EIGHT_SHORT_SEQUENCE) {
@ -1104,7 +1174,7 @@ static int decode_ics_info(AACContext *ac, IndividualChannelStream *ics,
} else {
ics->max_sfb = get_bits(gb, 6);
ics->num_windows = 1;
if (ac->oc[1].m4ac.object_type == AOT_ER_AAC_LD) {
if (aot == AOT_ER_AAC_LD || aot == AOT_ER_AAC_ELD) {
ics->swb_offset = ff_swb_offset_512[ac->oc[1].m4ac.sampling_index];
ics->num_swb = ff_aac_num_swb_512[ac->oc[1].m4ac.sampling_index];
if (!ics->num_swb || !ics->swb_offset)
@ -1114,20 +1184,22 @@ static int decode_ics_info(AACContext *ac, IndividualChannelStream *ics,
ics->num_swb = ff_aac_num_swb_1024[ac->oc[1].m4ac.sampling_index];
}
ics->tns_max_bands = ff_tns_max_bands_1024[ac->oc[1].m4ac.sampling_index];
ics->predictor_present = get_bits1(gb);
ics->predictor_reset_group = 0;
if (aot != AOT_ER_AAC_ELD) {
ics->predictor_present = get_bits1(gb);
ics->predictor_reset_group = 0;
}
if (ics->predictor_present) {
if (ac->oc[1].m4ac.object_type == AOT_AAC_MAIN) {
if (aot == AOT_AAC_MAIN) {
if (decode_prediction(ac, ics, gb)) {
return AVERROR_INVALIDDATA;
}
} else if (ac->oc[1].m4ac.object_type == AOT_AAC_LC ||
ac->oc[1].m4ac.object_type == AOT_ER_AAC_LC) {
} else if (aot == AOT_AAC_LC ||
aot == AOT_ER_AAC_LC) {
av_log(ac->avctx, AV_LOG_ERROR,
"Prediction is not allowed in AAC-LC.\n");
return AVERROR_INVALIDDATA;
} else {
if (ac->oc[1].m4ac.object_type == AOT_ER_AAC_LD) {
if (aot == AOT_ER_AAC_LD) {
av_log(ac->avctx, AV_LOG_ERROR,
"LTP in ER AAC LD not yet implemented.\n");
return AVERROR_PATCHWELCOME;
@ -1749,9 +1821,15 @@ static int decode_ics(AACContext *ac, SingleChannelElement *sce,
TemporalNoiseShaping *tns = &sce->tns;
IndividualChannelStream *ics = &sce->ics;
float *out = sce->coeffs;
int global_gain, er_syntax, pulse_present = 0;
int global_gain, eld_syntax, er_syntax, pulse_present = 0;
int ret;
eld_syntax = ac->oc[1].m4ac.object_type == AOT_ER_AAC_ELD;
er_syntax = ac->oc[1].m4ac.object_type == AOT_ER_AAC_LC ||
ac->oc[1].m4ac.object_type == AOT_ER_AAC_LTP ||
ac->oc[1].m4ac.object_type == AOT_ER_AAC_LD ||
ac->oc[1].m4ac.object_type == AOT_ER_AAC_ELD;
/* This assignment is to silence a GCC warning about the variable being used
* uninitialized when in fact it always is.
*/
@ -1772,11 +1850,8 @@ static int decode_ics(AACContext *ac, SingleChannelElement *sce,
return ret;
pulse_present = 0;
er_syntax = ac->oc[1].m4ac.object_type == AOT_ER_AAC_LC ||
ac->oc[1].m4ac.object_type == AOT_ER_AAC_LTP ||
ac->oc[1].m4ac.object_type == AOT_ER_AAC_LD;
if (!scale_flag) {
if ((pulse_present = get_bits1(gb))) {
if (!eld_syntax && (pulse_present = get_bits1(gb))) {
if (ics->window_sequence[0] == EIGHT_SHORT_SEQUENCE) {
av_log(ac->avctx, AV_LOG_ERROR,
"Pulse tool not allowed in eight short sequence.\n");
@ -1792,7 +1867,7 @@ static int decode_ics(AACContext *ac, SingleChannelElement *sce,
if (tns->present && !er_syntax)
if (decode_tns(ac, tns, gb, ics) < 0)
return AVERROR_INVALIDDATA;
if (get_bits1(gb)) {
if (!eld_syntax && get_bits1(gb)) {
avpriv_request_sample(ac->avctx, "SSR");
return AVERROR_PATCHWELCOME;
}
@ -1892,8 +1967,9 @@ static void apply_intensity_stereo(AACContext *ac,
static int decode_cpe(AACContext *ac, GetBitContext *gb, ChannelElement *cpe)
{
int i, ret, common_window, ms_present = 0;
int eld_syntax = ac->oc[1].m4ac.object_type == AOT_ER_AAC_ELD;
common_window = get_bits1(gb);
common_window = eld_syntax || get_bits1(gb);
if (common_window) {
if (decode_ics_info(ac, &cpe->ch[0].ics, gb))
return AVERROR_INVALIDDATA;
@ -2363,6 +2439,62 @@ static void imdct_and_windowing_ld(AACContext *ac, SingleChannelElement *sce)
memcpy(saved, buf + 256, 256 * sizeof(float));
}
static void imdct_and_windowing_eld(AACContext *ac, SingleChannelElement *sce)
{
float *in = sce->coeffs;
float *out = sce->ret;
float *saved = sce->saved;
const float *const window = ff_aac_eld_window;
float *buf = ac->buf_mdct;
int i;
const int n = 512;
const int n2 = n >> 1;
const int n4 = n >> 2;
// Inverse transform, mapped to the conventional IMDCT by
// Chivukula, R.K.; Reznik, Y.A.; Devarajan, V.,
// "Efficient algorithms for MPEG-4 AAC-ELD, AAC-LD and AAC-LC filterbanks,"
// Audio, Language and Image Processing, 2008. ICALIP 2008. International Conference on
// URL: http://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=4590245&isnumber=4589950
for (i = 0; i < n2; i+=2) {
float temp;
temp = in[i ]; in[i ] = -in[n - 1 - i]; in[n - 1 - i] = temp;
temp = -in[i + 1]; in[i + 1] = in[n - 2 - i]; in[n - 2 - i] = temp;
}
ac->mdct.imdct_half(&ac->mdct_ld, buf, in);
for (i = 0; i < n; i+=2) {
buf[i] = -buf[i];
}
// Like with the regular IMDCT at this point we still have the middle half
// of a transform but with even symmetry on the left and odd symmetry on
// the right
// window overlapping
// The spec says to use samples [0..511] but the reference decoder uses
// samples [128..639].
for (i = n4; i < n2; i ++) {
out[i - n4] = buf[n2 - 1 - i] * window[i - n4] +
saved[ i + n2] * window[i + n - n4] +
-saved[ n + n2 - 1 - i] * window[i + 2*n - n4] +
-saved[2*n + n2 + i] * window[i + 3*n - n4];
}
for (i = 0; i < n2; i ++) {
out[n4 + i] = buf[i] * window[i + n2 - n4] +
-saved[ n - 1 - i] * window[i + n2 + n - n4] +
-saved[ n + i] * window[i + n2 + 2*n - n4] +
saved[2*n + n - 1 - i] * window[i + n2 + 3*n - n4];
}
for (i = 0; i < n4; i ++) {
out[n2 + n4 + i] = buf[ i + n2] * window[i + n - n4] +
-saved[ n2 - 1 - i] * window[i + 2*n - n4] +
-saved[ n + n2 + i] * window[i + 3*n - n4];
}
// buffer update
memmove(saved + n, saved, 2 * n * sizeof(float));
memcpy( saved, buf, n * sizeof(float));
}
/**
* Apply dependent channel coupling (applied before IMDCT).
*
@ -2460,10 +2592,16 @@ static void spectral_to_sample(AACContext *ac)
{
int i, type;
void (*imdct_and_window)(AACContext *ac, SingleChannelElement *sce);
if (ac->oc[1].m4ac.object_type == AOT_ER_AAC_LD)
switch (ac->oc[1].m4ac.object_type) {
case AOT_ER_AAC_LD:
imdct_and_window = imdct_and_windowing_ld;
else
break;
case AOT_ER_AAC_ELD:
imdct_and_window = imdct_and_windowing_eld;
break;
default:
imdct_and_window = imdct_and_windowing;
}
for (type = 3; type >= 0; type--) {
for (i = 0; i < MAX_ELEM_ID; i++) {
ChannelElement *che = ac->che[type][i];
@ -2556,8 +2694,9 @@ static int aac_decode_er_frame(AVCodecContext *avctx, void *data,
int err, i;
int samples = 1024;
int chan_config = ac->oc[1].m4ac.chan_config;
int aot = ac->oc[1].m4ac.object_type;
if (ac->oc[1].m4ac.object_type == AOT_ER_AAC_LD)
if (aot == AOT_ER_AAC_LD || aot == AOT_ER_AAC_ELD)
samples >>= 1;
ac->frame = data;
@ -2581,7 +2720,8 @@ static int aac_decode_er_frame(AVCodecContext *avctx, void *data,
elem_type, elem_id);
return AVERROR_INVALIDDATA;
}
skip_bits(gb, 4);
if (aot != AOT_ER_AAC_ELD)
skip_bits(gb, 4);
switch (elem_type) {
case TYPE_SCE:
err = decode_ics(ac, &che->ch[0], gb, 0, 0);
@ -2783,6 +2923,7 @@ static int aac_decode_frame(AVCodecContext *avctx, void *data,
case AOT_ER_AAC_LC:
case AOT_ER_AAC_LTP:
case AOT_ER_AAC_LD:
case AOT_ER_AAC_ELD:
err = aac_decode_er_frame(avctx, data, got_frame_ptr, &gb);
break;
default:

483
libavcodec/aactab.c
View File

@ -1241,3 +1241,486 @@ const uint8_t ff_tns_max_bands_128[] = {
9, 9, 10, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14
};
// @}
const DECLARE_ALIGNED(32, float, ff_aac_eld_window)[1920] = {
0.00338834, 0.00567745, 0.00847677, 0.01172641,
0.01532555, 0.01917664, 0.02318809, 0.02729259,
0.03144503, 0.03560261, 0.03972499, 0.04379783,
0.04783094, 0.05183357, 0.05581342, 0.05977723,
0.06373173, 0.06768364, 0.07163937, 0.07559976,
0.07956096, 0.08352024, 0.08747623, 0.09143035,
0.09538618, 0.09934771, 0.10331917, 0.10730456,
0.11130697, 0.11532867, 0.11937133, 0.12343922,
0.12753911, 0.13167705, 0.13585812, 0.14008529,
0.14435986, 0.14868291, 0.15305531, 0.15747594,
0.16194193, 0.16645070, 0.17099991, 0.17558633,
0.18020600, 0.18485548, 0.18953191, 0.19423322,
0.19895800, 0.20370512, 0.20847374, 0.21326312,
0.21807244, 0.22290083, 0.22774742, 0.23261210,
0.23749542, 0.24239767, 0.24731889, 0.25225887,
0.25721719, 0.26219330, 0.26718648, 0.27219630,
0.27722262, 0.28226514, 0.28732336, 0.29239628,
0.29748247, 0.30258055, 0.30768914, 0.31280508,
0.31792385, 0.32304172, 0.32815579, 0.33326397,
0.33836470, 0.34345661, 0.34853868, 0.35361188,
0.35867865, 0.36374072, 0.36879900, 0.37385347,
0.37890349, 0.38394836, 0.38898730, 0.39401912,
0.39904236, 0.40405575, 0.40905820, 0.41404819,
0.41902398, 0.42398423, 0.42892805, 0.43385441,
0.43876210, 0.44365014, 0.44851786, 0.45336632,
0.45819759, 0.46301302, 0.46781309, 0.47259722,
0.47736435, 0.48211365, 0.48684450, 0.49155594,
0.49624679, 0.50091636, 0.50556440, 0.51019132,
0.51479771, 0.51938391, 0.52394998, 0.52849587,
0.53302151, 0.53752680, 0.54201160, 0.54647575,
0.55091916, 0.55534181, 0.55974376, 0.56412513,
0.56848615, 0.57282710, 0.57714834, 0.58145030,
0.58492489, 0.58918511, 0.59342326, 0.59763936,
0.60183347, 0.60600561, 0.61015581, 0.61428412,
0.61839056, 0.62247517, 0.62653799, 0.63057912,
0.63459872, 0.63859697, 0.64257403, 0.64653001,
0.65046495, 0.65437887, 0.65827181, 0.66214383,
0.66599499, 0.66982535, 0.67363499, 0.67742394,
0.68119219, 0.68493972, 0.68866653, 0.69237258,
0.69605778, 0.69972207, 0.70336537, 0.70698758,
0.71058862, 0.71416837, 0.71772674, 0.72126361,
0.72477889, 0.72827246, 0.73174419, 0.73519392,
0.73862141, 0.74202643, 0.74540874, 0.74876817,
0.75210458, 0.75541785, 0.75870785, 0.76197437,
0.76521709, 0.76843570, 0.77162988, 0.77479939,
0.77794403, 0.78106359, 0.78415789, 0.78722670,
0.79026979, 0.79328694, 0.79627791, 0.79924244,
0.80218027, 0.80509112, 0.80797472, 0.81083081,
0.81365915, 0.81645949, 0.81923160, 0.82197528,
0.82469037, 0.82737673, 0.83003419, 0.83266262,
0.83526186, 0.83783176, 0.84037217, 0.84288297,
0.84536401, 0.84781517, 0.85023632, 0.85262739,
0.85498836, 0.85731921, 0.85961993, 0.86189052,
0.86413101, 0.86634140, 0.86852173, 0.87067211,
0.87279275, 0.87488384, 0.87694559, 0.87897824,
0.88098206, 0.88295729, 0.88490423, 0.88682332,
0.88871519, 0.89058048, 0.89241983, 0.89423391,
0.89602338, 0.89778893, 0.89953126, 0.90125142,
0.90295086, 0.90463104, 0.90629341, 0.90793946,
0.90957067, 0.91118856, 0.91279464, 0.91439073,
0.91597898, 0.91756153, 0.91914049, 0.92071690,
0.92229070, 0.92386182, 0.92542993, 0.92698946,
0.92852960, 0.93003929, 0.93150727, 0.93291739,
0.93424863, 0.93547974, 0.93658982, 0.93756587,
0.93894072, 0.93922780, 0.93955477, 0.93991290,
0.94029104, 0.94067794, 0.94106258, 0.94144084,
0.94181549, 0.94218963, 0.94256628, 0.94294662,
0.94332998, 0.94371562, 0.94410280, 0.94449122,
0.94488106, 0.94527249, 0.94566568, 0.94606074,
0.94645772, 0.94685665, 0.94725759, 0.94766054,
0.94806547, 0.94847234, 0.94888115, 0.94929190,
0.94970469, 0.95011960, 0.95053672, 0.95095604,
0.95137751, 0.95180105, 0.95222658, 0.95265413,
0.95308380, 0.95351571, 0.95394994, 0.95438653,
0.95482538, 0.95526643, 0.95570958, 0.95615486,
0.95660234, 0.95705214, 0.95750433, 0.95795892,
0.95841582, 0.95887493, 0.95933616, 0.95979949,
0.96026500, 0.96073277, 0.96120286, 0.96167526,
0.96214986, 0.96262655, 0.96310522, 0.96358586,
0.96406853, 0.96455330, 0.96504026, 0.96552936,
0.96602051, 0.96651360, 0.96700850, 0.96750520,
0.96800376, 0.96850424, 0.96900670, 0.96951112,
0.97001738, 0.97052533, 0.97103488, 0.97154597,
0.97205867, 0.97257304, 0.97308915, 0.97360694,
0.97412631, 0.97464711, 0.97516923, 0.97569262,
0.97621735, 0.97674350, 0.97727111, 0.97780016,
0.97833051, 0.97886205, 0.97939463, 0.97992823,
0.98046291, 0.98099875, 0.98153580, 0.98207405,
0.98261337, 0.98315364, 0.98369474, 0.98423664,
0.98477941, 0.98532311, 0.98586780, 0.98641348,
0.98696003, 0.98750734, 0.98805530, 0.98860389,
0.98915320, 0.98970328, 0.99025423, 0.99080602,
0.99135855, 0.99191171, 0.99246541, 0.99301962,
0.99357443, 0.99412992, 0.99468617, 0.99524320,
0.99580092, 0.99635926, 0.99691814, 0.99747748,
0.99803721, 0.99859725, 0.99915752, 0.99971793,
1.00028215, 1.00084319, 1.00140472, 1.00196665,
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0.00013501, 0.00018828, 0.00023933, 0.00028784,
0.00033342, 0.00037572, 0.00041438, 0.00044939,
0.00048103, 0.00050958, 0.00053533, 0.00055869,
0.00058015, 0.00060022, 0.00061935, 0.00063781,
0.00065568, 0.00067303, 0.00068991, 0.00070619,
0.00072155, 0.00073567, 0.00074826, 0.00075912,
0.00076811, 0.00077509, 0.00077997, 0.00078275,
0.00078351, 0.00078237, 0.00077943, 0.00077484,
0.00076884, 0.00076160, 0.00075335, 0.00074423,
0.00073442, 0.00072404, 0.00071323, 0.00070209,
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0.00059211, 0.00057855, 0.00056462, 0.00055033,
0.00053566, 0.00052063, 0.00050522, 0.00048949,
0.00047349, 0.00045728, 0.00044092, 0.00042447,
0.00040803, 0.00039166, 0.00037544, 0.00035943,
0.00034371, 0.00032833, 0.00031333, 0.00029874,
0.00028452, 0.00027067, 0.00025715, 0.00024395,
0.00023104, 0.00021842, 0.00020606, 0.00019398,
0.00018218, 0.00017069, 0.00015953, 0.00014871,
0.00013827, 0.00012823, 0.00011861, 0.00010942,
0.00010067, 0.00009236, 0.00008448, 0.00007703,
0.00006999, 0.00006337, 0.00005714, 0.00005129,
0.00004583, 0.00004072, 0.00003597, 0.00003157,
0.00002752, 0.00002380, 0.00002042, 0.00001736,
0.00001461, 0.00001215, 0.00000998, 0.00000807,
0.00000641, 0.00000499, 0.00000378, 0.00000278,
0.00000196, 0.00000132, 0.00000082, 0.00000046,
0.00000020, 0.00000005, -0.00000003, -0.00000006,
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0.00000001, 0.00000001, -0.00000001, -0.00000004,
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};

1
libavcodec/aactab.h
View File

@ -47,6 +47,7 @@
DECLARE_ALIGNED(32, extern float, ff_aac_kbd_long_1024)[1024];
DECLARE_ALIGNED(32, extern float, ff_aac_kbd_long_512 )[512];
DECLARE_ALIGNED(32, extern float, ff_aac_kbd_short_128)[128];
const DECLARE_ALIGNED(32, extern float, ff_aac_eld_window)[1920];
// @}
/* @name number of scalefactor window bands for long and short transform windows respectively

2
libavcodec/version.h
View File

@ -27,7 +27,7 @@
*/
#define LIBAVCODEC_VERSION_MAJOR 55
#define LIBAVCODEC_VERSION_MINOR 21
#define LIBAVCODEC_VERSION_MINOR 22
#define LIBAVCODEC_VERSION_MICRO 0
#define LIBAVCODEC_VERSION_INT AV_VERSION_INT(LIBAVCODEC_VERSION_MAJOR, \