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Imported Upstream version 3.1.1

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This commit is contained in:
Sebastian Ramacher
2016-07-12 01:58:18 +02:00
parent 1db419b881
commit c1a7bf0ae2
2865 changed files with 114123 additions and 38236 deletions
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libavcodec/aacenc.c
+20 -7
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@@ -78,11 +78,10 @@ static void put_audio_specific_config(AVCodecContext *avctx)
void ff_quantize_band_cost_cache_init(struct AACEncContext *s)
{
int sf, g;
for (sf = 0; sf < 256; sf++) {
for (g = 0; g < 128; g++) {
s->quantize_band_cost_cache[sf][g].bits = -1;
}
++s->quantize_band_cost_cache_generation;
if (s->quantize_band_cost_cache_generation == 0) {
memset(s->quantize_band_cost_cache, 0, sizeof(s->quantize_band_cost_cache));
s->quantize_band_cost_cache_generation = 1;
}
}
@@ -555,10 +554,11 @@ static int aac_encode_frame(AVCodecContext *avctx, AVPacket *avpkt,
if (!frame)
la = NULL;
if (tag == TYPE_LFE) {
wi[ch].window_type[0] = ONLY_LONG_SEQUENCE;
wi[ch].window_type[0] = wi[ch].window_type[1] = ONLY_LONG_SEQUENCE;
wi[ch].window_shape = 0;
wi[ch].num_windows = 1;
wi[ch].grouping[0] = 1;
wi[ch].clipping[0] = 0;
/* Only the lowest 12 coefficients are used in a LFE channel.
* The expression below results in only the bottom 8 coefficients
@@ -583,9 +583,22 @@ static int aac_encode_frame(AVCodecContext *avctx, AVPacket *avpkt,
ics->tns_max_bands = wi[ch].window_type[0] == EIGHT_SHORT_SEQUENCE ?
ff_tns_max_bands_128 [s->samplerate_index]:
ff_tns_max_bands_1024[s->samplerate_index];
clip_avoidance_factor = 0.0f;
for (w = 0; w < ics->num_windows; w++)
ics->group_len[w] = wi[ch].grouping[w];
/* Calculate input sample maximums and evaluate clipping risk */
clip_avoidance_factor = 0.0f;
for (w = 0; w < ics->num_windows; w++) {
const float *wbuf = overlap + w * 128;
const int wlen = 2048 / ics->num_windows;
float max = 0;
int j;
/* mdct input is 2 * output */
for (j = 0; j < wlen; j++)
max = FFMAX(max, fabsf(wbuf[j]));
wi[ch].clipping[w] = max;
}
for (w = 0; w < ics->num_windows; w++) {
if (wi[ch].clipping[w] > CLIP_AVOIDANCE_FACTOR) {
ics->window_clipping[w] = 1;