#include "libavutil/libm.h" // brought forward to work around cygwin header breakage
#include <float.h>
+#include "libavutil/mathematics.h"
#include "avcodec.h"
#include "put_bits.h"
#include "aac.h"
int *bits, int BT_ZERO, int BT_UNSIGNED,
int BT_PAIR, int BT_ESC)
{
- const float IQ = ff_aac_pow2sf_tab[POW_SF2_ZERO + scale_idx - SCALE_ONE_POS + SCALE_DIV_512];
- const float Q = ff_aac_pow2sf_tab[POW_SF2_ZERO - scale_idx + SCALE_ONE_POS - SCALE_DIV_512];
+ const int q_idx = POW_SF2_ZERO - scale_idx + SCALE_ONE_POS - SCALE_DIV_512;
+ const float Q = ff_aac_pow2sf_tab [q_idx];
+ const float Q34 = ff_aac_pow34sf_tab[q_idx];
+ const float IQ = ff_aac_pow2sf_tab [POW_SF2_ZERO + scale_idx - SCALE_ONE_POS + SCALE_DIV_512];
const float CLIPPED_ESCAPE = 165140.0f*IQ;
int i, j;
float cost = 0;
const int dim = BT_PAIR ? 2 : 4;
int resbits = 0;
- const float Q34 = sqrtf(Q * sqrtf(Q));
const int range = aac_cb_range[cb];
const int maxval = aac_cb_maxval[cb];
int off;
int win, int group_len, const float lambda)
{
BandCodingPath path[120][12];
- int w, swb, cb, start, start2, size;
+ int w, swb, cb, start, size;
int i, j;
const int max_sfb = sce->ics.max_sfb;
const int run_bits = sce->ics.num_windows == 1 ? 5 : 3;
path[0][cb].run = 0;
}
for (swb = 0; swb < max_sfb; swb++) {
- start2 = start;
size = sce->ics.swb_sizes[swb];
if (sce->zeroes[win*16 + swb]) {
for (cb = 0; cb < 12; cb++) {
float cost_stay_here, cost_get_here;
float rd = 0.0f;
for (w = 0; w < group_len; w++) {
- FFPsyBand *band = &s->psy.psy_bands[s->cur_channel*PSY_MAX_BANDS+(win+w)*16+swb];
+ FFPsyBand *band = &s->psy.ch[s->cur_channel].psy_bands[(win+w)*16+swb];
rd += quantize_band_cost(s, sce->coeffs + start + w*128,
s->scoefs + start + w*128, size,
sce->sf_idx[(win+w)*16+swb], cb,
int win, int group_len, const float lambda)
{
BandCodingPath path[120][12];
- int w, swb, cb, start, start2, size;
+ int w, swb, cb, start, size;
int i, j;
const int max_sfb = sce->ics.max_sfb;
const int run_bits = sce->ics.num_windows == 1 ? 5 : 3;
const int run_esc = (1 << run_bits) - 1;
int idx, ppos, count;
int stackrun[120], stackcb[120], stack_len;
- float next_minrd = INFINITY;
+ float next_minbits = INFINITY;
int next_mincb = 0;
abs_pow34_v(s->scoefs, sce->coeffs, 1024);
path[0][cb].run = 0;
}
for (swb = 0; swb < max_sfb; swb++) {
- start2 = start;
size = sce->ics.swb_sizes[swb];
if (sce->zeroes[win*16 + swb]) {
- for (cb = 0; cb < 12; cb++) {
- path[swb+1][cb].prev_idx = cb;
- path[swb+1][cb].cost = path[swb][cb].cost;
- path[swb+1][cb].run = path[swb][cb].run + 1;
+ float cost_stay_here = path[swb][0].cost;
+ float cost_get_here = next_minbits + run_bits + 4;
+ if ( run_value_bits[sce->ics.num_windows == 8][path[swb][0].run]
+ != run_value_bits[sce->ics.num_windows == 8][path[swb][0].run+1])
+ cost_stay_here += run_bits;
+ if (cost_get_here < cost_stay_here) {
+ path[swb+1][0].prev_idx = next_mincb;
+ path[swb+1][0].cost = cost_get_here;
+ path[swb+1][0].run = 1;
+ } else {
+ path[swb+1][0].prev_idx = 0;
+ path[swb+1][0].cost = cost_stay_here;
+ path[swb+1][0].run = path[swb][0].run + 1;
+ }
+ next_minbits = path[swb+1][0].cost;
+ next_mincb = 0;
+ for (cb = 1; cb < 12; cb++) {
+ path[swb+1][cb].cost = 61450;
+ path[swb+1][cb].prev_idx = -1;
+ path[swb+1][cb].run = 0;
}
} else {
- float minrd = next_minrd;
+ float minbits = next_minbits;
int mincb = next_mincb;
int startcb = sce->band_type[win*16+swb];
- next_minrd = INFINITY;
+ next_minbits = INFINITY;
next_mincb = 0;
for (cb = 0; cb < startcb; cb++) {
path[swb+1][cb].cost = 61450;
}
for (cb = startcb; cb < 12; cb++) {
float cost_stay_here, cost_get_here;
- float rd = 0.0f;
+ float bits = 0.0f;
for (w = 0; w < group_len; w++) {
- rd += quantize_band_cost(s, sce->coeffs + start + w*128,
- s->scoefs + start + w*128, size,
- sce->sf_idx[(win+w)*16+swb], cb,
- 0, INFINITY, NULL);
+ bits += quantize_band_cost(s, sce->coeffs + start + w*128,
+ s->scoefs + start + w*128, size,
+ sce->sf_idx[(win+w)*16+swb], cb,
+ 0, INFINITY, NULL);
}
- cost_stay_here = path[swb][cb].cost + rd;
- cost_get_here = minrd + rd + run_bits + 4;
+ cost_stay_here = path[swb][cb].cost + bits;
+ cost_get_here = minbits + bits + run_bits + 4;
if ( run_value_bits[sce->ics.num_windows == 8][path[swb][cb].run]
!= run_value_bits[sce->ics.num_windows == 8][path[swb][cb].run+1])
cost_stay_here += run_bits;
path[swb+1][cb].cost = cost_stay_here;
path[swb+1][cb].run = path[swb][cb].run + 1;
}
- if (path[swb+1][cb].cost < next_minrd) {
- next_minrd = path[swb+1][cb].cost;
+ if (path[swb+1][cb].cost < next_minbits) {
+ next_minbits = path[swb+1][cb].cost;
next_mincb = cb;
}
}
qmin = INT_MAX;
qmax = 0.0f;
for (w2 = 0; w2 < sce->ics.group_len[w]; w2++) {
- FFPsyBand *band = &s->psy.psy_bands[s->cur_channel*PSY_MAX_BANDS+(w+w2)*16+g];
+ FFPsyBand *band = &s->psy.ch[s->cur_channel].psy_bands[(w+w2)*16+g];
if (band->energy <= band->threshold || band->threshold == 0.0f) {
sce->zeroes[(w+w2)*16+g] = 1;
continue;
float dist = 0;
int cb = find_min_book(maxval, sce->sf_idx[w*16+g]);
for (w2 = 0; w2 < sce->ics.group_len[w]; w2++) {
- FFPsyBand *band = &s->psy.psy_bands[s->cur_channel*PSY_MAX_BANDS+(w+w2)*16+g];
+ FFPsyBand *band = &s->psy.ch[s->cur_channel].psy_bands[(w+w2)*16+g];
dist += quantize_band_cost(s, coefs + w2*128, s->scoefs + start + w2*128, sce->ics.swb_sizes[g],
q + q0, cb, lambda / band->threshold, INFINITY, NULL);
}
{
int start = 0, i, w, w2, g;
int destbits = avctx->bit_rate * 1024.0 / avctx->sample_rate / avctx->channels;
- float dists[128], uplims[128];
+ float dists[128] = { 0 }, uplims[128];
float maxvals[128];
int fflag, minscaler;
int its = 0;
int allz = 0;
float minthr = INFINITY;
+ // for values above this the decoder might end up in an endless loop
+ // due to always having more bits than what can be encoded.
+ destbits = FFMIN(destbits, 5800);
//XXX: some heuristic to determine initial quantizers will reduce search time
- memset(dists, 0, sizeof(dists));
//determine zero bands and upper limits
for (w = 0; w < sce->ics.num_windows; w += sce->ics.group_len[w]) {
for (g = 0; g < sce->ics.num_swb; g++) {
int nz = 0;
float uplim = 0.0f;
for (w2 = 0; w2 < sce->ics.group_len[w]; w2++) {
- FFPsyBand *band = &s->psy.psy_bands[s->cur_channel*PSY_MAX_BANDS+(w+w2)*16+g];
+ FFPsyBand *band = &s->psy.ch[s->cur_channel].psy_bands[(w+w2)*16+g];
uplim += band->threshold;
if (band->energy <= band->threshold || band->threshold == 0.0f) {
sce->zeroes[(w+w2)*16+g] = 1;
SingleChannelElement *sce,
const float lambda)
{
- int start = 0, i, w, w2, g;
+ int i, w, w2, g;
int minq = 255;
memset(sce->sf_idx, 0, sizeof(sce->sf_idx));
for (w = 0; w < sce->ics.num_windows; w += sce->ics.group_len[w]) {
- start = w*128;
for (g = 0; g < sce->ics.num_swb; g++) {
for (w2 = 0; w2 < sce->ics.group_len[w]; w2++) {
- FFPsyBand *band = &s->psy.psy_bands[s->cur_channel*PSY_MAX_BANDS+(w+w2)*16+g];
+ FFPsyBand *band = &s->psy.ch[s->cur_channel].psy_bands[(w+w2)*16+g];
if (band->energy <= band->threshold) {
sce->sf_idx[(w+w2)*16+g] = 218;
sce->zeroes[(w+w2)*16+g] = 1;
if (!cpe->ch[0].zeroes[w*16+g] && !cpe->ch[1].zeroes[w*16+g]) {
float dist1 = 0.0f, dist2 = 0.0f;
for (w2 = 0; w2 < sce0->ics.group_len[w]; w2++) {
- FFPsyBand *band0 = &s->psy.psy_bands[(s->cur_channel+0)*PSY_MAX_BANDS+(w+w2)*16+g];
- FFPsyBand *band1 = &s->psy.psy_bands[(s->cur_channel+1)*PSY_MAX_BANDS+(w+w2)*16+g];
+ FFPsyBand *band0 = &s->psy.ch[s->cur_channel+0].psy_bands[(w+w2)*16+g];
+ FFPsyBand *band1 = &s->psy.ch[s->cur_channel+1].psy_bands[(w+w2)*16+g];
float minthr = FFMIN(band0->threshold, band1->threshold);
float maxthr = FFMAX(band0->threshold, band1->threshold);
for (i = 0; i < sce0->ics.swb_sizes[g]; i++) {
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