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aaccoder: remove previous PNS implementation from twoloop

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This commit undoes commit c5d4f87e81111427c0952278ec247fa8ab1e6e52
and removes PNS band marking from the twoloop coder, which has
been reimplemented in a better way in this series of patches.

Reviewed-by: Claudio Freire <klaussfreire@gmail.com>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
This commit is contained in:
Rostislav Pehlivanov 2015-07-02 19:13:01 +01:00 committed by Michael Niedermayer
parent e06578e392
commit 117b15f4a8
1 changed files with 3 additions and 26 deletions
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29
libavcodec/aaccoder.c
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@ -792,11 +792,9 @@ static void search_for_quantizers_twoloop(AVCodecContext *avctx,
{
int start = 0, i, w, w2, g;
int destbits = avctx->bit_rate * 1024.0 / avctx->sample_rate / avctx->channels * (lambda / 120.f);
const float freq_mult = avctx->sample_rate/(1024.0f/sce->ics.num_windows)/2.0f;
float dists[128] = { 0 }, uplims[128] = { 0 };
float maxvals[128];
int noise_sf[128] = { 0 };
int fflag, minscaler, minscaler_n;
int fflag, minscaler;
int its = 0;
int allz = 0;
float minthr = INFINITY;
@ -807,13 +805,12 @@ static void search_for_quantizers_twoloop(AVCodecContext *avctx,
//XXX: some heuristic to determine initial quantizers will reduce search time
//determine zero bands and upper limits
for (w = 0; w < sce->ics.num_windows; w += sce->ics.group_len[w]) {
start = 0;
for (g = 0; g < sce->ics.num_swb; g++) {
int nz = 0;
float uplim = 0.0f, energy = 0.0f;
for (w2 = 0; w2 < sce->ics.group_len[w]; w2++) {
FFPsyBand *band = &s->psy.ch[s->cur_channel].psy_bands[(w+w2)*16+g];
uplim += band->threshold;
uplim += band->threshold;
energy += band->energy;
if (band->energy <= band->threshold || band->threshold == 0.0f) {
sce->zeroes[(w+w2)*16+g] = 1;
@ -822,18 +819,10 @@ static void search_for_quantizers_twoloop(AVCodecContext *avctx,
nz = 1;
}
uplims[w*16+g] = uplim *512;
if (s->options.pns && start*freq_mult > NOISE_LOW_LIMIT && energy < uplim * 1.2f) {
noise_sf[w*16+g] = av_clip(4+FFMIN(log2f(energy)*2,255), -100, 155);
sce->band_type[w*16+g] = NOISE_BT;
nz= 1;
} else { /** Band type will be determined by the twoloop algorithm */
sce->band_type[w*16+g] = 0;
}
sce->zeroes[w*16+g] = !nz;
if (nz)
minthr = FFMIN(minthr, uplim);
allz |= nz;
start += sce->ics.swb_sizes[g];
}
}
for (w = 0; w < sce->ics.num_windows; w += sce->ics.group_len[w]) {
@ -864,7 +853,6 @@ static void search_for_quantizers_twoloop(AVCodecContext *avctx,
do {
int tbits, qstep;
minscaler = sce->sf_idx[0];
minscaler_n = sce->sf_idx[0];
//inner loop - quantize spectrum to fit into given number of bits
qstep = its ? 1 : 32;
do {
@ -879,11 +867,7 @@ static void search_for_quantizers_twoloop(AVCodecContext *avctx,
int cb;
float dist = 0.0f;
if (sce->band_type[w*16+g] == NOISE_BT) {
minscaler_n = FFMIN(minscaler_n, noise_sf[w*16+g]);
start += sce->ics.swb_sizes[g];
continue;
} else if (sce->zeroes[w*16+g] || sce->sf_idx[w*16+g] >= 218) {
if (sce->zeroes[w*16+g] || sce->sf_idx[w*16+g] >= 218) {
start += sce->ics.swb_sizes[g];
continue;
}
@ -927,16 +911,9 @@ static void search_for_quantizers_twoloop(AVCodecContext *avctx,
fflag = 0;
minscaler = av_clip(minscaler, 60, 255 - SCALE_MAX_DIFF);
for (w = 0; w < sce->ics.num_windows; w += sce->ics.group_len[w])
for (g = 0; g < sce->ics.num_swb; g++)
if (sce->band_type[w*16+g] == NOISE_BT)
sce->sf_idx[w*16+g] = av_clip(noise_sf[w*16+g], minscaler_n, minscaler_n + SCALE_MAX_DIFF);
for (w = 0; w < sce->ics.num_windows; w += sce->ics.group_len[w]) {
for (g = 0; g < sce->ics.num_swb; g++) {
int prevsc = sce->sf_idx[w*16+g];
if (sce->band_type[w*16+g] == NOISE_BT)
continue;
if (dists[w*16+g] > uplims[w*16+g] && sce->sf_idx[w*16+g] > 60) {
if (find_min_book(maxvals[w*16+g], sce->sf_idx[w*16+g]-1))
sce->sf_idx[w*16+g]--;