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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.
pull/39/head
Alex Converse 11 years ago
parent f457edb697
commit b3be41ca82
6 changed files with 661 additions and 35 deletions
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  1. 1
      Changelog
  2. 2
      libavcodec/aac.h
  3. 173
      libavcodec/aacdec.c
  4. 483
      libavcodec/aactab.c
  5. 1
      libavcodec/aactab.h
  6. 2
      libavcodec/version.h

1
Changelog
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@ -38,6 +38,7 @@ version 10:
- Low Delay AAC (ER AAC LD) decoding - Low Delay AAC (ER AAC LD) decoding
- mux chapters in ASF files - mux chapters in ASF files
- Opus in Ogg demuxing - Opus in Ogg demuxing
- Enhanced Low Delay AAC (ER AAC ELD) decoding (no LD SBR support)
version 9: version 9:

2
libavcodec/aac.h
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@ -234,7 +234,7 @@ typedef struct SingleChannelElement {
int sf_idx[128]; ///< scalefactor indices (used by encoder) int sf_idx[128]; ///< scalefactor indices (used by encoder)
uint8_t zeroes[128]; ///< band is not coded (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, 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(32, float, ret_buf)[2048]; ///< PCM output buffer
DECLARE_ALIGNED(16, float, ltp_state)[3072]; ///< time signal for LTP DECLARE_ALIGNED(16, float, ltp_state)[3072]; ///< time signal for LTP
PredictorState predictor_state[MAX_PREDICTORS]; PredictorState predictor_state[MAX_PREDICTORS];

173
libavcodec/aacdec.c
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@ -2,6 +2,7 @@
* AAC decoder * AAC decoder
* Copyright (c) 2005-2006 Oded Shimon ( ods15 ods15 dyndns org ) * Copyright (c) 2005-2006 Oded Shimon ( ods15 ods15 dyndns org )
* Copyright (c) 2006-2007 Maxim Gavrilov ( maxim.gavrilov gmail com ) * Copyright (c) 2006-2007 Maxim Gavrilov ( maxim.gavrilov gmail com )
* Copyright (c) 2008-2013 Alex Converse <alex.converse@gmail.com>
* *
* AAC LATM decoder * AAC LATM decoder
* Copyright (c) 2008-2010 Paul Kendall <paul@kcbbs.gen.nz> * 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; 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. * 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) m4ac, m4ac->chan_config)) < 0)
return ret; return ret;
break; break;
case AOT_ER_AAC_ELD:
if ((ret = decode_eld_specific_config(ac, avctx, &gb,
m4ac, m4ac->chan_config)) < 0)
return ret;
break;
default: default:
avpriv_report_missing_feature(avctx, AV_LOG_ERROR, avpriv_report_missing_feature(avctx, AV_LOG_ERROR,
"Audio object type %s%d", "Audio object type %s%d",
@ -1067,13 +1134,15 @@ static void decode_ltp(LongTermPrediction *ltp,
static int decode_ics_info(AACContext *ac, IndividualChannelStream *ics, static int decode_ics_info(AACContext *ac, IndividualChannelStream *ics,
GetBitContext *gb) GetBitContext *gb)
{ {
int aot = ac->oc[1].m4ac.object_type;
if (aot != AOT_ER_AAC_ELD) {
if (get_bits1(gb)) { if (get_bits1(gb)) {
av_log(ac->avctx, AV_LOG_ERROR, "Reserved bit set.\n"); av_log(ac->avctx, AV_LOG_ERROR, "Reserved bit set.\n");
return AVERROR_INVALIDDATA; return AVERROR_INVALIDDATA;
} }
ics->window_sequence[1] = ics->window_sequence[0]; ics->window_sequence[1] = ics->window_sequence[0];
ics->window_sequence[0] = get_bits(gb, 2); ics->window_sequence[0] = get_bits(gb, 2);
if (ac->oc[1].m4ac.object_type == AOT_ER_AAC_LD && if (aot == AOT_ER_AAC_LD &&
ics->window_sequence[0] != ONLY_LONG_SEQUENCE) { ics->window_sequence[0] != ONLY_LONG_SEQUENCE) {
av_log(ac->avctx, AV_LOG_ERROR, av_log(ac->avctx, AV_LOG_ERROR,
"AAC LD is only defined for ONLY_LONG_SEQUENCE but " "AAC LD is only defined for ONLY_LONG_SEQUENCE but "
@ -1083,6 +1152,7 @@ static int decode_ics_info(AACContext *ac, IndividualChannelStream *ics,
} }
ics->use_kb_window[1] = ics->use_kb_window[0]; ics->use_kb_window[1] = ics->use_kb_window[0];
ics->use_kb_window[0] = get_bits1(gb); ics->use_kb_window[0] = get_bits1(gb);
}
ics->num_window_groups = 1; ics->num_window_groups = 1;
ics->group_len[0] = 1; ics->group_len[0] = 1;
if (ics->window_sequence[0] == EIGHT_SHORT_SEQUENCE) { if (ics->window_sequence[0] == EIGHT_SHORT_SEQUENCE) {
@ -1104,7 +1174,7 @@ static int decode_ics_info(AACContext *ac, IndividualChannelStream *ics,
} else { } else {
ics->max_sfb = get_bits(gb, 6); ics->max_sfb = get_bits(gb, 6);
ics->num_windows = 1; 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->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]; ics->num_swb = ff_aac_num_swb_512[ac->oc[1].m4ac.sampling_index];
if (!ics->num_swb || !ics->swb_offset) 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->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->tns_max_bands = ff_tns_max_bands_1024[ac->oc[1].m4ac.sampling_index];
if (aot != AOT_ER_AAC_ELD) {
ics->predictor_present = get_bits1(gb); ics->predictor_present = get_bits1(gb);
ics->predictor_reset_group = 0; ics->predictor_reset_group = 0;
}
if (ics->predictor_present) { 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)) { if (decode_prediction(ac, ics, gb)) {
return AVERROR_INVALIDDATA; return AVERROR_INVALIDDATA;
} }
} else if (ac->oc[1].m4ac.object_type == AOT_AAC_LC || } else if (aot == AOT_AAC_LC ||
ac->oc[1].m4ac.object_type == AOT_ER_AAC_LC) { aot == AOT_ER_AAC_LC) {
av_log(ac->avctx, AV_LOG_ERROR, av_log(ac->avctx, AV_LOG_ERROR,
"Prediction is not allowed in AAC-LC.\n"); "Prediction is not allowed in AAC-LC.\n");
return AVERROR_INVALIDDATA; return AVERROR_INVALIDDATA;
} else { } 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, av_log(ac->avctx, AV_LOG_ERROR,
"LTP in ER AAC LD not yet implemented.\n"); "LTP in ER AAC LD not yet implemented.\n");
return AVERROR_PATCHWELCOME; return AVERROR_PATCHWELCOME;
@ -1749,9 +1821,15 @@ static int decode_ics(AACContext *ac, SingleChannelElement *sce,
TemporalNoiseShaping *tns = &sce->tns; TemporalNoiseShaping *tns = &sce->tns;
IndividualChannelStream *ics = &sce->ics; IndividualChannelStream *ics = &sce->ics;
float *out = sce->coeffs; float *out = sce->coeffs;
int global_gain, er_syntax, pulse_present = 0; int global_gain, eld_syntax, er_syntax, pulse_present = 0;
int ret; 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 /* This assignment is to silence a GCC warning about the variable being used
* uninitialized when in fact it always is. * uninitialized when in fact it always is.
*/ */
@ -1772,11 +1850,8 @@ static int decode_ics(AACContext *ac, SingleChannelElement *sce,
return ret; return ret;
pulse_present = 0; 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 (!scale_flag) {
if ((pulse_present = get_bits1(gb))) { if (!eld_syntax && (pulse_present = get_bits1(gb))) {
if (ics->window_sequence[0] == EIGHT_SHORT_SEQUENCE) { if (ics->window_sequence[0] == EIGHT_SHORT_SEQUENCE) {
av_log(ac->avctx, AV_LOG_ERROR, av_log(ac->avctx, AV_LOG_ERROR,
"Pulse tool not allowed in eight short sequence.\n"); "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 (tns->present && !er_syntax)
if (decode_tns(ac, tns, gb, ics) < 0) if (decode_tns(ac, tns, gb, ics) < 0)
return AVERROR_INVALIDDATA; return AVERROR_INVALIDDATA;
if (get_bits1(gb)) { if (!eld_syntax && get_bits1(gb)) {
avpriv_request_sample(ac->avctx, "SSR"); avpriv_request_sample(ac->avctx, "SSR");
return AVERROR_PATCHWELCOME; return AVERROR_PATCHWELCOME;
} }
@ -1892,8 +1967,9 @@ static void apply_intensity_stereo(AACContext *ac,
static int decode_cpe(AACContext *ac, GetBitContext *gb, ChannelElement *cpe) static int decode_cpe(AACContext *ac, GetBitContext *gb, ChannelElement *cpe)
{ {
int i, ret, common_window, ms_present = 0; 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 (common_window) {
if (decode_ics_info(ac, &cpe->ch[0].ics, gb)) if (decode_ics_info(ac, &cpe->ch[0].ics, gb))
return AVERROR_INVALIDDATA; return AVERROR_INVALIDDATA;
@ -2363,6 +2439,62 @@ static void imdct_and_windowing_ld(AACContext *ac, SingleChannelElement *sce)
memcpy(saved, buf + 256, 256 * sizeof(float)); 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). * Apply dependent channel coupling (applied before IMDCT).
* *
@ -2460,10 +2592,16 @@ static void spectral_to_sample(AACContext *ac)
{ {
int i, type; int i, type;
void (*imdct_and_window)(AACContext *ac, SingleChannelElement *sce); 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; 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; imdct_and_window = imdct_and_windowing;
}
for (type = 3; type >= 0; type--) { for (type = 3; type >= 0; type--) {
for (i = 0; i < MAX_ELEM_ID; i++) { for (i = 0; i < MAX_ELEM_ID; i++) {
ChannelElement *che = ac->che[type][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 err, i;
int samples = 1024; int samples = 1024;
int chan_config = ac->oc[1].m4ac.chan_config; 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; samples >>= 1;
ac->frame = data; ac->frame = data;
@ -2581,6 +2720,7 @@ static int aac_decode_er_frame(AVCodecContext *avctx, void *data,
elem_type, elem_id); elem_type, elem_id);
return AVERROR_INVALIDDATA; return AVERROR_INVALIDDATA;
} }
if (aot != AOT_ER_AAC_ELD)
skip_bits(gb, 4); skip_bits(gb, 4);
switch (elem_type) { switch (elem_type) {
case TYPE_SCE: case TYPE_SCE:
@ -2783,6 +2923,7 @@ static int aac_decode_frame(AVCodecContext *avctx, void *data,
case AOT_ER_AAC_LC: case AOT_ER_AAC_LC:
case AOT_ER_AAC_LTP: case AOT_ER_AAC_LTP:
case AOT_ER_AAC_LD: case AOT_ER_AAC_LD:
case AOT_ER_AAC_ELD:
err = aac_decode_er_frame(avctx, data, got_frame_ptr, &gb); err = aac_decode_er_frame(avctx, data, got_frame_ptr, &gb);
break; break;
default: default:

483
libavcodec/aactab.c
Unescape 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 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,
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};

1
libavcodec/aactab.h
Unescape 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_1024)[1024];
DECLARE_ALIGNED(32, extern float, ff_aac_kbd_long_512 )[512]; DECLARE_ALIGNED(32, extern float, ff_aac_kbd_long_512 )[512];
DECLARE_ALIGNED(32, extern float, ff_aac_kbd_short_128)[128]; 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 /* @name number of scalefactor window bands for long and short transform windows respectively

2
libavcodec/version.h
Unescape View File

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

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