| 78e65cd7 |
/*
* AAC coefficients encoder
* Copyright (C) 2008-2009 Konstantin Shishkov
*
* This file is part of FFmpeg.
*
* FFmpeg is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* FFmpeg is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
/** |
| ba87f080 |
* @file |
| 78e65cd7 |
* AAC coefficients encoder
*/
/***********************************
* TODOs:
* speedup quantizer selection
* add sane pulse detection
***********************************/
|
| 083e715f |
#include "libavutil/libm.h" // brought forward to work around cygwin header breakage
|
| 144c5e3d |
#include <float.h> |
| 85770d6e |
#include "libavutil/mathematics.h" |
| 78e65cd7 |
#include "avcodec.h"
#include "put_bits.h"
#include "aac.h"
#include "aacenc.h"
#include "aactab.h" |
| c47c781e |
#include "aacenctab.h" |
| ef8e5a61 |
#include "aacenc_utils.h" |
| 43b378a0 |
#include "aacenc_quantization.h" |
| 331c1e74 |
#include "aac_tablegen_decl.h" |
| 78e65cd7 |
|
| d1ca7142 |
#include "aacenc_is.h" |
| a1c487e9 |
#include "aacenc_tns.h" |
| 76b81b10 |
#include "aacenc_pred.h" |
| d1ca7142 |
|
| c5d4f87e |
/** Frequency in Hz for lower limit of noise substitution **/ |
| 38fd4c2e |
#define NOISE_LOW_LIMIT 4500
/* Energy spread threshold value below which no PNS is used, this corresponds to
* typically around 17Khz, after which PNS usage decays ending at 19Khz */
#define NOISE_SPREAD_THRESHOLD 0.5f
/* This constant gets divided by lambda to return ~1.65 which when multiplied
* by the band->threshold and compared to band->energy is the boundary between
* excessive PNS and little PNS usage. */
#define NOISE_LAMBDA_NUMERATOR 252.1f |
| c5d4f87e |
|
| 78e65cd7 |
/**
* structure used in optimal codebook search
*/
typedef struct BandCodingPath {
int prev_idx; ///< pointer to the previous path point
float cost; ///< path cost
int run;
} BandCodingPath;
/**
* Encode band info for single window group bands.
*/
static void encode_window_bands_info(AACEncContext *s, SingleChannelElement *sce,
int win, int group_len, const float lambda)
{ |
| 55397b0e |
BandCodingPath path[120][CB_TOT_ALL]; |
| e65ab9d9 |
int w, swb, cb, start, size; |
| 78e65cd7 |
int i, j; |
| 99d61d34 |
const int max_sfb = sce->ics.max_sfb; |
| 78e65cd7 |
const int run_bits = sce->ics.num_windows == 1 ? 5 : 3; |
| 99d61d34 |
const int run_esc = (1 << run_bits) - 1; |
| 78e65cd7 |
int idx, ppos, count;
int stackrun[120], stackcb[120], stack_len;
float next_minrd = INFINITY;
int next_mincb = 0;
abs_pow34_v(s->scoefs, sce->coeffs, 1024);
start = win*128; |
| 55397b0e |
for (cb = 0; cb < CB_TOT_ALL; cb++) { |
| 99d61d34 |
path[0][cb].cost = 0.0f; |
| 78e65cd7 |
path[0][cb].prev_idx = -1; |
| 99d61d34 |
path[0][cb].run = 0; |
| 78e65cd7 |
} |
| fd257dc4 |
for (swb = 0; swb < max_sfb; swb++) { |
| 78e65cd7 |
size = sce->ics.swb_sizes[swb]; |
| fd257dc4 |
if (sce->zeroes[win*16 + swb]) { |
| 55397b0e |
for (cb = 0; cb < CB_TOT_ALL; cb++) { |
| 78e65cd7 |
path[swb+1][cb].prev_idx = cb; |
| 99d61d34 |
path[swb+1][cb].cost = path[swb][cb].cost;
path[swb+1][cb].run = path[swb][cb].run + 1; |
| 78e65cd7 |
} |
| fd257dc4 |
} else { |
| 78e65cd7 |
float minrd = next_minrd;
int mincb = next_mincb;
next_minrd = INFINITY;
next_mincb = 0; |
| 55397b0e |
for (cb = 0; cb < CB_TOT_ALL; cb++) { |
| 78e65cd7 |
float cost_stay_here, cost_get_here;
float rd = 0.0f; |
| 55397b0e |
if (cb >= 12 && sce->band_type[win*16+swb] < aac_cb_out_map[cb] ||
cb < aac_cb_in_map[sce->band_type[win*16+swb]] && sce->band_type[win*16+swb] > aac_cb_out_map[cb]) {
path[swb+1][cb].prev_idx = -1;
path[swb+1][cb].cost = INFINITY;
path[swb+1][cb].run = path[swb][cb].run + 1;
continue;
} |
| fd257dc4 |
for (w = 0; w < group_len; w++) { |
| 0bc01cc9 |
FFPsyBand *band = &s->psy.ch[s->cur_channel].psy_bands[(win+w)*16+swb]; |
| 32be264c |
rd += quantize_band_cost(s, &sce->coeffs[start + w*128],
&s->scoefs[start + w*128], size, |
| c5d4f87e |
sce->sf_idx[(win+w)*16+swb], aac_cb_out_map[cb], |
| 59216e05 |
lambda / band->threshold, INFINITY, NULL, 0); |
| 78e65cd7 |
}
cost_stay_here = path[swb][cb].cost + rd;
cost_get_here = minrd + rd + run_bits + 4; |
| fd257dc4 |
if ( run_value_bits[sce->ics.num_windows == 8][path[swb][cb].run] |
| 99d61d34 |
!= run_value_bits[sce->ics.num_windows == 8][path[swb][cb].run+1]) |
| 78e65cd7 |
cost_stay_here += run_bits;
if (cost_get_here < cost_stay_here) {
path[swb+1][cb].prev_idx = mincb;
path[swb+1][cb].cost = cost_get_here;
path[swb+1][cb].run = 1;
} else {
path[swb+1][cb].prev_idx = cb;
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;
next_mincb = cb;
}
}
}
start += sce->ics.swb_sizes[swb];
}
//convert resulting path from backward-linked list
stack_len = 0; |
| 99d61d34 |
idx = 0; |
| 55397b0e |
for (cb = 1; cb < CB_TOT_ALL; cb++) |
| fd257dc4 |
if (path[max_sfb][cb].cost < path[max_sfb][idx].cost) |
| 78e65cd7 |
idx = cb;
ppos = max_sfb; |
| 99d61d34 |
while (ppos > 0) { |
| 55397b0e |
av_assert1(idx >= 0); |
| 78e65cd7 |
cb = idx;
stackrun[stack_len] = path[ppos][cb].run;
stackcb [stack_len] = cb;
idx = path[ppos-path[ppos][cb].run+1][cb].prev_idx;
ppos -= path[ppos][cb].run;
stack_len++;
}
//perform actual band info encoding
start = 0; |
| fd257dc4 |
for (i = stack_len - 1; i >= 0; i--) { |
| c5d4f87e |
cb = aac_cb_out_map[stackcb[i]];
put_bits(&s->pb, 4, cb); |
| 78e65cd7 |
count = stackrun[i]; |
| c5d4f87e |
memset(sce->zeroes + win*16 + start, !cb, count); |
| 78e65cd7 |
//XXX: memset when band_type is also uint8_t |
| fd257dc4 |
for (j = 0; j < count; j++) { |
| c5d4f87e |
sce->band_type[win*16 + start] = cb; |
| 78e65cd7 |
start++;
} |
| 99d61d34 |
while (count >= run_esc) { |
| 78e65cd7 |
put_bits(&s->pb, run_bits, run_esc);
count -= run_esc;
}
put_bits(&s->pb, run_bits, count);
}
}
|
| 759510e6 |
static void codebook_trellis_rate(AACEncContext *s, SingleChannelElement *sce,
int win, int group_len, const float lambda)
{ |
| 55397b0e |
BandCodingPath path[120][CB_TOT_ALL]; |
| e65ab9d9 |
int w, swb, cb, start, size; |
| 759510e6 |
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; |
| 207bf44d |
float next_minbits = INFINITY; |
| 759510e6 |
int next_mincb = 0;
abs_pow34_v(s->scoefs, sce->coeffs, 1024);
start = win*128; |
| 305859c0 |
for (cb = 0; cb < CB_TOT_ALL; cb++) { |
| 759510e6 |
path[0][cb].cost = run_bits+4;
path[0][cb].prev_idx = -1;
path[0][cb].run = 0;
}
for (swb = 0; swb < max_sfb; swb++) {
size = sce->ics.swb_sizes[swb];
if (sce->zeroes[win*16 + swb]) { |
| 8dbaa5bd |
float cost_stay_here = path[swb][0].cost; |
| 207bf44d |
float cost_get_here = next_minbits + run_bits + 4; |
| 8dbaa5bd |
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;
} |
| 207bf44d |
next_minbits = path[swb+1][0].cost; |
| 8dbaa5bd |
next_mincb = 0; |
| 305859c0 |
for (cb = 1; cb < CB_TOT_ALL; cb++) { |
| 8dbaa5bd |
path[swb+1][cb].cost = 61450;
path[swb+1][cb].prev_idx = -1;
path[swb+1][cb].run = 0; |
| 759510e6 |
}
} else { |
| 207bf44d |
float minbits = next_minbits; |
| 759510e6 |
int mincb = next_mincb;
int startcb = sce->band_type[win*16+swb]; |
| c5d4f87e |
startcb = aac_cb_in_map[startcb]; |
| 207bf44d |
next_minbits = INFINITY; |
| 759510e6 |
next_mincb = 0;
for (cb = 0; cb < startcb; cb++) {
path[swb+1][cb].cost = 61450;
path[swb+1][cb].prev_idx = -1;
path[swb+1][cb].run = 0;
} |
| 305859c0 |
for (cb = startcb; cb < CB_TOT_ALL; cb++) { |
| 759510e6 |
float cost_stay_here, cost_get_here; |
| 207bf44d |
float bits = 0.0f; |
| 305859c0 |
if (cb >= 12 && sce->band_type[win*16+swb] != aac_cb_out_map[cb]) { |
| c5d4f87e |
path[swb+1][cb].cost = 61450;
path[swb+1][cb].prev_idx = -1;
path[swb+1][cb].run = 0;
continue;
} |
| 759510e6 |
for (w = 0; w < group_len; w++) { |
| 32be264c |
bits += quantize_band_cost(s, &sce->coeffs[start + w*128],
&s->scoefs[start + w*128], size, |
| 59216e05 |
sce->sf_idx[win*16+swb], |
| c5d4f87e |
aac_cb_out_map[cb], |
| 59216e05 |
0, INFINITY, NULL, 0); |
| 759510e6 |
} |
| 207bf44d |
cost_stay_here = path[swb][cb].cost + bits;
cost_get_here = minbits + bits + run_bits + 4; |
| 759510e6 |
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;
if (cost_get_here < cost_stay_here) {
path[swb+1][cb].prev_idx = mincb;
path[swb+1][cb].cost = cost_get_here;
path[swb+1][cb].run = 1;
} else {
path[swb+1][cb].prev_idx = cb;
path[swb+1][cb].cost = cost_stay_here;
path[swb+1][cb].run = path[swb][cb].run + 1;
} |
| 207bf44d |
if (path[swb+1][cb].cost < next_minbits) {
next_minbits = path[swb+1][cb].cost; |
| 759510e6 |
next_mincb = cb;
}
}
}
start += sce->ics.swb_sizes[swb];
}
//convert resulting path from backward-linked list
stack_len = 0;
idx = 0; |
| 305859c0 |
for (cb = 1; cb < CB_TOT_ALL; cb++) |
| 759510e6 |
if (path[max_sfb][cb].cost < path[max_sfb][idx].cost)
idx = cb;
ppos = max_sfb;
while (ppos > 0) { |
| 688cb712 |
av_assert1(idx >= 0); |
| 759510e6 |
cb = idx;
stackrun[stack_len] = path[ppos][cb].run;
stackcb [stack_len] = cb;
idx = path[ppos-path[ppos][cb].run+1][cb].prev_idx;
ppos -= path[ppos][cb].run;
stack_len++;
}
//perform actual band info encoding
start = 0;
for (i = stack_len - 1; i >= 0; i--) { |
| c5d4f87e |
cb = aac_cb_out_map[stackcb[i]];
put_bits(&s->pb, 4, cb); |
| 759510e6 |
count = stackrun[i]; |
| c5d4f87e |
memset(sce->zeroes + win*16 + start, !cb, count); |
| 759510e6 |
//XXX: memset when band_type is also uint8_t
for (j = 0; j < count; j++) { |
| c5d4f87e |
sce->band_type[win*16 + start] = cb; |
| 759510e6 |
start++;
}
while (count >= run_esc) {
put_bits(&s->pb, run_bits, run_esc);
count -= run_esc;
}
put_bits(&s->pb, run_bits, count);
}
}
|
| 78e65cd7 |
typedef struct TrellisPath {
float cost;
int prev;
} TrellisPath;
|
| f5e82fec |
#define TRELLIS_STAGES 121 |
| 144c5e3d |
#define TRELLIS_STATES (SCALE_MAX_DIFF+1) |
| f5e82fec |
|
| 7c10b87b |
static void set_special_band_scalefactors(AACEncContext *s, SingleChannelElement *sce)
{
int w, g, start = 0;
int minscaler_n = sce->sf_idx[0], minscaler_i = sce->sf_idx[0];
int bands = 0;
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++) {
if (sce->band_type[w*16+g] == INTENSITY_BT || sce->band_type[w*16+g] == INTENSITY_BT2) {
sce->sf_idx[w*16+g] = av_clip(ceilf(log2f(sce->is_ener[w*16+g])*2), -155, 100);
minscaler_i = FFMIN(minscaler_i, sce->sf_idx[w*16+g]);
bands++;
} else if (sce->band_type[w*16+g] == NOISE_BT) {
sce->sf_idx[w*16+g] = av_clip(4+log2f(sce->pns_ener[w*16+g])*2, -100, 155);
minscaler_n = FFMIN(minscaler_n, sce->sf_idx[w*16+g]);
bands++;
}
start += sce->ics.swb_sizes[g];
}
}
if (!bands)
return;
/* Clip the scalefactor indices */
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] == INTENSITY_BT || sce->band_type[w*16+g] == INTENSITY_BT2) {
sce->sf_idx[w*16+g] = av_clip(sce->sf_idx[w*16+g], minscaler_i, minscaler_i + SCALE_MAX_DIFF);
} else if (sce->band_type[w*16+g] == NOISE_BT) {
sce->sf_idx[w*16+g] = av_clip(sce->sf_idx[w*16+g], minscaler_n, minscaler_n + SCALE_MAX_DIFF);
}
}
}
}
|
| 78e65cd7 |
static void search_for_quantizers_anmr(AVCodecContext *avctx, AACEncContext *s, |
| 99d61d34 |
SingleChannelElement *sce,
const float lambda) |
| 78e65cd7 |
{
int q, w, w2, g, start = 0; |
| 9072c29e |
int i, j; |
| 78e65cd7 |
int idx; |
| f5e82fec |
TrellisPath paths[TRELLIS_STAGES][TRELLIS_STATES];
int bandaddr[TRELLIS_STAGES]; |
| 78e65cd7 |
int minq;
float mincost; |
| 144c5e3d |
float q0f = FLT_MAX, q1f = 0.0f, qnrgf = 0.0f;
int q0, q1, qcnt = 0;
for (i = 0; i < 1024; i++) {
float t = fabsf(sce->coeffs[i]);
if (t > 0.0f) {
q0f = FFMIN(q0f, t);
q1f = FFMAX(q1f, t);
qnrgf += t*t;
qcnt++;
}
}
if (!qcnt) {
memset(sce->sf_idx, 0, sizeof(sce->sf_idx));
memset(sce->zeroes, 1, sizeof(sce->zeroes));
return;
}
//minimum scalefactor index is when minimum nonzero coefficient after quantizing is not clipped |
| 04d72abf |
q0 = coef2minsf(q0f); |
| 144c5e3d |
//maximum scalefactor index is when maximum coefficient after quantizing is still not zero |
| 04d72abf |
q1 = coef2maxsf(q1f); |
| 144c5e3d |
if (q1 - q0 > 60) {
int q0low = q0;
int q1high = q1;
//minimum scalefactor index is when maximum nonzero coefficient after quantizing is not clipped |
| 51ffd3a6 |
int qnrg = av_clip_uint8(log2f(sqrtf(qnrgf/qcnt))*4 - 31 + SCALE_ONE_POS - SCALE_DIV_512); |
| 144c5e3d |
q1 = qnrg + 30;
q0 = qnrg - 30;
if (q0 < q0low) {
q1 += q0low - q0;
q0 = q0low;
} else if (q1 > q1high) {
q0 -= q1 - q1high;
q1 = q1high;
}
} |
| 78e65cd7 |
|
| f5e82fec |
for (i = 0; i < TRELLIS_STATES; i++) { |
| 9072c29e |
paths[0][i].cost = 0.0f;
paths[0][i].prev = -1; |
| 78e65cd7 |
} |
| f5e82fec |
for (j = 1; j < TRELLIS_STAGES; j++) {
for (i = 0; i < TRELLIS_STATES; i++) { |
| 9072c29e |
paths[j][i].cost = INFINITY;
paths[j][i].prev = -2;
} |
| 78e65cd7 |
} |
| 9072c29e |
idx = 1; |
| 78e65cd7 |
abs_pow34_v(s->scoefs, sce->coeffs, 1024); |
| fd257dc4 |
for (w = 0; w < sce->ics.num_windows; w += sce->ics.group_len[w]) { |
| 78e65cd7 |
start = w*128; |
| fd257dc4 |
for (g = 0; g < sce->ics.num_swb; g++) { |
| 32be264c |
const float *coefs = &sce->coeffs[start]; |
| 78e65cd7 |
float qmin, qmax;
int nz = 0;
|
| 9072c29e |
bandaddr[idx] = w * 16 + g; |
| 78e65cd7 |
qmin = INT_MAX;
qmax = 0.0f; |
| fd257dc4 |
for (w2 = 0; w2 < sce->ics.group_len[w]; w2++) { |
| 0bc01cc9 |
FFPsyBand *band = &s->psy.ch[s->cur_channel].psy_bands[(w+w2)*16+g]; |
| fd257dc4 |
if (band->energy <= band->threshold || band->threshold == 0.0f) { |
| 78e65cd7 |
sce->zeroes[(w+w2)*16+g] = 1;
continue;
}
sce->zeroes[(w+w2)*16+g] = 0;
nz = 1; |
| fd257dc4 |
for (i = 0; i < sce->ics.swb_sizes[g]; i++) { |
| 78e65cd7 |
float t = fabsf(coefs[w2*128+i]); |
| c8f47d8b |
if (t > 0.0f) |
| 988c1705 |
qmin = FFMIN(qmin, t);
qmax = FFMAX(qmax, t); |
| 78e65cd7 |
}
} |
| fd257dc4 |
if (nz) { |
| 78e65cd7 |
int minscale, maxscale;
float minrd = INFINITY; |
| 9069b7d3 |
float maxval; |
| 78e65cd7 |
//minimum scalefactor index is when minimum nonzero coefficient after quantizing is not clipped |
| 04d72abf |
minscale = coef2minsf(qmin); |
| 78e65cd7 |
//maximum scalefactor index is when maximum coefficient after quantizing is still not zero |
| 04d72abf |
maxscale = coef2maxsf(qmax); |
| 144c5e3d |
minscale = av_clip(minscale - q0, 0, TRELLIS_STATES - 1);
maxscale = av_clip(maxscale - q0, 0, TRELLIS_STATES); |
| 9069b7d3 |
maxval = find_max_val(sce->ics.group_len[w], sce->ics.swb_sizes[g], s->scoefs+start); |
| fd257dc4 |
for (q = minscale; q < maxscale; q++) { |
| acc9f51f |
float dist = 0; |
| 0ecfa7b7 |
int cb = find_min_book(maxval, sce->sf_idx[w*16+g]); |
| fd257dc4 |
for (w2 = 0; w2 < sce->ics.group_len[w]; w2++) { |
| 0bc01cc9 |
FFPsyBand *band = &s->psy.ch[s->cur_channel].psy_bands[(w+w2)*16+g]; |
| acc9f51f |
dist += quantize_band_cost(s, coefs + w2*128, s->scoefs + start + w2*128, sce->ics.swb_sizes[g], |
| 59216e05 |
q + q0, cb, lambda / band->threshold, INFINITY, NULL, 0); |
| 78e65cd7 |
} |
| 988c1705 |
minrd = FFMIN(minrd, dist); |
| 78e65cd7 |
|
| 144c5e3d |
for (i = 0; i < q1 - q0; i++) { |
| 78e65cd7 |
float cost; |
| 9072c29e |
cost = paths[idx - 1][i].cost + dist |
| 78e65cd7 |
+ ff_aac_scalefactor_bits[q - i + SCALE_DIFF_ZERO]; |
| 144c5e3d |
if (cost < paths[idx][q].cost) { |
| 9072c29e |
paths[idx][q].cost = cost;
paths[idx][q].prev = i; |
| 78e65cd7 |
}
}
} |
| fd257dc4 |
} else { |
| 144c5e3d |
for (q = 0; q < q1 - q0; q++) { |
| 911fbc45 |
paths[idx][q].cost = paths[idx - 1][q].cost + 1;
paths[idx][q].prev = q; |
| 78e65cd7 |
}
}
sce->zeroes[w*16+g] = !nz;
start += sce->ics.swb_sizes[g]; |
| 9072c29e |
idx++; |
| 78e65cd7 |
}
} |
| 9072c29e |
idx--;
mincost = paths[idx][0].cost;
minq = 0; |
| f5e82fec |
for (i = 1; i < TRELLIS_STATES; i++) { |
| 9072c29e |
if (paths[idx][i].cost < mincost) {
mincost = paths[idx][i].cost;
minq = i; |
| 78e65cd7 |
}
} |
| 9072c29e |
while (idx) { |
| 144c5e3d |
sce->sf_idx[bandaddr[idx]] = minq + q0; |
| 507e0314 |
minq = FFMAX(paths[idx][minq].prev, 0); |
| 9072c29e |
idx--; |
| 78e65cd7 |
}
//set the same quantizers inside window groups |
| fd257dc4 |
for (w = 0; w < sce->ics.num_windows; w += sce->ics.group_len[w])
for (g = 0; g < sce->ics.num_swb; g++)
for (w2 = 1; w2 < sce->ics.group_len[w]; w2++) |
| 78e65cd7 |
sce->sf_idx[(w+w2)*16+g] = sce->sf_idx[w*16+g];
}
/**
* two-loop quantizers search taken from ISO 13818-7 Appendix C
*/ |
| 99d61d34 |
static void search_for_quantizers_twoloop(AVCodecContext *avctx,
AACEncContext *s,
SingleChannelElement *sce,
const float lambda) |
| 78e65cd7 |
{
int start = 0, i, w, w2, g; |
| 1ef82cc6 |
int destbits = avctx->bit_rate * 1024.0 / avctx->sample_rate / avctx->channels * (lambda / 120.f); |
| c5d4f87e |
float dists[128] = { 0 }, uplims[128] = { 0 }; |
| 63e1278d |
float maxvals[128]; |
| 117b15f4 |
int fflag, minscaler; |
| 99d61d34 |
int its = 0; |
| 78e65cd7 |
int allz = 0;
float minthr = INFINITY;
|
| ecd7455e |
// 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); |
| 78e65cd7 |
//XXX: some heuristic to determine initial quantizers will reduce search time
//determine zero bands and upper limits |
| fd257dc4 |
for (w = 0; w < sce->ics.num_windows; w += sce->ics.group_len[w]) {
for (g = 0; g < sce->ics.num_swb; g++) { |
| 78e65cd7 |
int nz = 0; |
| c5d4f87e |
float uplim = 0.0f, energy = 0.0f; |
| fd257dc4 |
for (w2 = 0; w2 < sce->ics.group_len[w]; w2++) { |
| 0bc01cc9 |
FFPsyBand *band = &s->psy.ch[s->cur_channel].psy_bands[(w+w2)*16+g]; |
| 117b15f4 |
uplim += band->threshold; |
| c5d4f87e |
energy += band->energy; |
| fd257dc4 |
if (band->energy <= band->threshold || band->threshold == 0.0f) { |
| 78e65cd7 |
sce->zeroes[(w+w2)*16+g] = 1;
continue;
}
nz = 1;
}
uplims[w*16+g] = uplim *512;
sce->zeroes[w*16+g] = !nz; |
| fd257dc4 |
if (nz) |
| 988c1705 |
minthr = FFMIN(minthr, uplim); |
| f578854e |
allz |= nz; |
| 78e65cd7 |
}
} |
| fd257dc4 |
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->zeroes[w*16+g]) { |
| 78e65cd7 |
sce->sf_idx[w*16+g] = SCALE_ONE_POS;
continue;
} |
| 51ffd3a6 |
sce->sf_idx[w*16+g] = SCALE_ONE_POS + FFMIN(log2f(uplims[w*16+g]/minthr)*4,59); |
| 78e65cd7 |
}
}
|
| fd257dc4 |
if (!allz) |
| 78e65cd7 |
return;
abs_pow34_v(s->scoefs, sce->coeffs, 1024); |
| 63e1278d |
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++) {
const float *scaled = s->scoefs + start;
maxvals[w*16+g] = find_max_val(sce->ics.group_len[w], sce->ics.swb_sizes[g], scaled);
start += sce->ics.swb_sizes[g];
}
}
|
| 78e65cd7 |
//perform two-loop search
//outer loop - improve quality |
| 99d61d34 |
do { |
| 78e65cd7 |
int tbits, qstep;
minscaler = sce->sf_idx[0];
//inner loop - quantize spectrum to fit into given number of bits
qstep = its ? 1 : 32; |
| 99d61d34 |
do { |
| 78e65cd7 |
int prev = -1;
tbits = 0; |
| fd257dc4 |
for (w = 0; w < sce->ics.num_windows; w += sce->ics.group_len[w]) { |
| 78e65cd7 |
start = w*128; |
| fd257dc4 |
for (g = 0; g < sce->ics.num_swb; g++) { |
| 32be264c |
const float *coefs = &sce->coeffs[start];
const float *scaled = &s->scoefs[start]; |
| 78e65cd7 |
int bits = 0;
int cb; |
| 04d6a54e |
float dist = 0.0f; |
| 78e65cd7 |
|
| 117b15f4 |
if (sce->zeroes[w*16+g] || sce->sf_idx[w*16+g] >= 218) { |
| a62d6cfe |
start += sce->ics.swb_sizes[g]; |
| 78e65cd7 |
continue; |
| a62d6cfe |
} |
| 78e65cd7 |
minscaler = FFMIN(minscaler, sce->sf_idx[w*16+g]); |
| 63e1278d |
cb = find_min_book(maxvals[w*16+g], sce->sf_idx[w*16+g]); |
| 911fbc45 |
for (w2 = 0; w2 < sce->ics.group_len[w]; w2++) {
int b;
dist += quantize_band_cost(s, coefs + w2*128,
scaled + w2*128,
sce->ics.swb_sizes[g],
sce->sf_idx[w*16+g],
cb, |
| c91dce99 |
1.0f, |
| 911fbc45 |
INFINITY, |
| 59216e05 |
&b,
0); |
| 911fbc45 |
bits += b;
} |
| c91dce99 |
dists[w*16+g] = dist - bits; |
| fd257dc4 |
if (prev != -1) { |
| 78e65cd7 |
bits += ff_aac_scalefactor_bits[sce->sf_idx[w*16+g] - prev + SCALE_DIFF_ZERO];
}
tbits += bits;
start += sce->ics.swb_sizes[g];
prev = sce->sf_idx[w*16+g];
}
} |
| fd257dc4 |
if (tbits > destbits) { |
| c8f47d8b |
for (i = 0; i < 128; i++)
if (sce->sf_idx[i] < 218 - qstep) |
| 78e65cd7 |
sce->sf_idx[i] += qstep; |
| fd257dc4 |
} else { |
| c8f47d8b |
for (i = 0; i < 128; i++)
if (sce->sf_idx[i] > 60 - qstep) |
| 78e65cd7 |
sce->sf_idx[i] -= qstep;
}
qstep >>= 1; |
| c226fc5b |
if (!qstep && tbits > destbits*1.02 && sce->sf_idx[0] < 217) |
| 78e65cd7 |
qstep = 1; |
| 99d61d34 |
} while (qstep); |
| 78e65cd7 |
fflag = 0;
minscaler = av_clip(minscaler, 60, 255 - SCALE_MAX_DIFF); |
| c5d4f87e |
|
| fd257dc4 |
for (w = 0; w < sce->ics.num_windows; w += sce->ics.group_len[w]) {
for (g = 0; g < sce->ics.num_swb; g++) { |
| 78e65cd7 |
int prevsc = sce->sf_idx[w*16+g]; |
| fe461767 |
if (dists[w*16+g] > uplims[w*16+g] && sce->sf_idx[w*16+g] > 60) { |
| 63e1278d |
if (find_min_book(maxvals[w*16+g], sce->sf_idx[w*16+g]-1)) |
| 00f0b4b9 |
sce->sf_idx[w*16+g]--; |
| fe461767 |
else //Try to make sure there is some energy in every band
sce->sf_idx[w*16+g]-=2;
} |
| 78e65cd7 |
sce->sf_idx[w*16+g] = av_clip(sce->sf_idx[w*16+g], minscaler, minscaler + SCALE_MAX_DIFF);
sce->sf_idx[w*16+g] = FFMIN(sce->sf_idx[w*16+g], 219); |
| fd257dc4 |
if (sce->sf_idx[w*16+g] != prevsc) |
| 78e65cd7 |
fflag = 1; |
| 63e1278d |
sce->band_type[w*16+g] = find_min_book(maxvals[w*16+g], sce->sf_idx[w*16+g]); |
| 78e65cd7 |
}
}
its++; |
| 99d61d34 |
} while (fflag && its < 10); |
| 78e65cd7 |
}
static void search_for_quantizers_faac(AVCodecContext *avctx, AACEncContext *s, |
| 99d61d34 |
SingleChannelElement *sce,
const float lambda) |
| 78e65cd7 |
{
int start = 0, i, w, w2, g;
float uplim[128], maxq[128];
int minq, maxsf;
float distfact = ((sce->ics.num_windows > 1) ? 85.80 : 147.84) / lambda;
int last = 0, lastband = 0, curband = 0;
float avg_energy = 0.0; |
| fd257dc4 |
if (sce->ics.num_windows == 1) { |
| 78e65cd7 |
start = 0; |
| fd257dc4 |
for (i = 0; i < 1024; i++) {
if (i - start >= sce->ics.swb_sizes[curband]) { |
| 78e65cd7 |
start += sce->ics.swb_sizes[curband];
curband++;
} |
| fd257dc4 |
if (sce->coeffs[i]) { |
| 78e65cd7 |
avg_energy += sce->coeffs[i] * sce->coeffs[i];
last = i;
lastband = curband;
}
} |
| fd257dc4 |
} else {
for (w = 0; w < 8; w++) { |
| 32be264c |
const float *coeffs = &sce->coeffs[w*128]; |
| 33775c35 |
curband = start = 0; |
| fd257dc4 |
for (i = 0; i < 128; i++) {
if (i - start >= sce->ics.swb_sizes[curband]) { |
| 78e65cd7 |
start += sce->ics.swb_sizes[curband];
curband++;
} |
| fd257dc4 |
if (coeffs[i]) { |
| 78e65cd7 |
avg_energy += coeffs[i] * coeffs[i];
last = FFMAX(last, i);
lastband = FFMAX(lastband, curband);
}
}
}
}
last++;
avg_energy /= last; |
| fd257dc4 |
if (avg_energy == 0.0f) {
for (i = 0; i < FF_ARRAY_ELEMS(sce->sf_idx); i++) |
| 78e65cd7 |
sce->sf_idx[i] = SCALE_ONE_POS;
return;
} |
| fd257dc4 |
for (w = 0; w < sce->ics.num_windows; w += sce->ics.group_len[w]) { |
| 78e65cd7 |
start = w*128; |
| fd257dc4 |
for (g = 0; g < sce->ics.num_swb; g++) { |
| 32be264c |
float *coefs = &sce->coeffs[start]; |
| 78e65cd7 |
const int size = sce->ics.swb_sizes[g];
int start2 = start, end2 = start + size, peakpos = start;
float maxval = -1, thr = 0.0f, t;
maxq[w*16+g] = 0.0f; |
| fd257dc4 |
if (g > lastband) { |
| 78e65cd7 |
maxq[w*16+g] = 0.0f;
start += size; |
| fd257dc4 |
for (w2 = 0; w2 < sce->ics.group_len[w]; w2++) |
| 78e65cd7 |
memset(coefs + w2*128, 0, sizeof(coefs[0])*size);
continue;
} |
| fd257dc4 |
for (w2 = 0; w2 < sce->ics.group_len[w]; w2++) {
for (i = 0; i < size; i++) { |
| 78e65cd7 |
float t = coefs[w2*128+i]*coefs[w2*128+i]; |
| 988c1705 |
maxq[w*16+g] = FFMAX(maxq[w*16+g], fabsf(coefs[w2*128 + i])); |
| 78e65cd7 |
thr += t; |
| fd257dc4 |
if (sce->ics.num_windows == 1 && maxval < t) { |
| 99d61d34 |
maxval = t; |
| 78e65cd7 |
peakpos = start+i;
}
}
} |
| fd257dc4 |
if (sce->ics.num_windows == 1) { |
| 78e65cd7 |
start2 = FFMAX(peakpos - 2, start2);
end2 = FFMIN(peakpos + 3, end2); |
| fd257dc4 |
} else { |
| 78e65cd7 |
start2 -= start;
end2 -= start;
}
start += size;
thr = pow(thr / (avg_energy * (end2 - start2)), 0.3 + 0.1*(lastband - g) / lastband); |
| 99d61d34 |
t = 1.0 - (1.0 * start2 / last); |
| 78e65cd7 |
uplim[w*16+g] = distfact / (1.4 * thr + t*t*t + 0.075);
}
}
memset(sce->sf_idx, 0, sizeof(sce->sf_idx));
abs_pow34_v(s->scoefs, sce->coeffs, 1024); |
| fd257dc4 |
for (w = 0; w < sce->ics.num_windows; w += sce->ics.group_len[w]) { |
| 78e65cd7 |
start = w*128; |
| fd257dc4 |
for (g = 0; g < sce->ics.num_swb; g++) { |
| 32be264c |
const float *coefs = &sce->coeffs[start];
const float *scaled = &s->scoefs[start]; |
| 99d61d34 |
const int size = sce->ics.swb_sizes[g]; |
| 78e65cd7 |
int scf, prev_scf, step; |
| 32fa7725 |
int min_scf = -1, max_scf = 256; |
| 78e65cd7 |
float curdiff; |
| fd257dc4 |
if (maxq[w*16+g] < 21.544) { |
| 78e65cd7 |
sce->zeroes[w*16+g] = 1;
start += size;
continue;
}
sce->zeroes[w*16+g] = 0; |
| 51ffd3a6 |
scf = prev_scf = av_clip(SCALE_ONE_POS - SCALE_DIV_512 - log2f(1/maxq[w*16+g])*16/3, 60, 218); |
| fd257dc4 |
for (;;) { |
| 78e65cd7 |
float dist = 0.0f;
int quant_max;
|
| fd257dc4 |
for (w2 = 0; w2 < sce->ics.group_len[w]; w2++) { |
| 78e65cd7 |
int b;
dist += quantize_band_cost(s, coefs + w2*128,
scaled + w2*128,
sce->ics.swb_sizes[g],
scf,
ESC_BT, |
| 7a4eebcd |
lambda, |
| 78e65cd7 |
INFINITY, |
| 59216e05 |
&b,
0); |
| 78e65cd7 |
dist -= b;
} |
| 7a4eebcd |
dist *= 1.0f / 512.0f / lambda; |
| 59216e05 |
quant_max = quant(maxq[w*16+g], ff_aac_pow2sf_tab[POW_SF2_ZERO - scf + SCALE_ONE_POS - SCALE_DIV_512], ROUND_STANDARD); |
| fd257dc4 |
if (quant_max >= 8191) { // too much, return to the previous quantizer |
| 78e65cd7 |
sce->sf_idx[w*16+g] = prev_scf;
break;
}
prev_scf = scf;
curdiff = fabsf(dist - uplim[w*16+g]); |
| 32fa7725 |
if (curdiff <= 1.0f) |
| 78e65cd7 |
step = 0;
else |
| 51ffd3a6 |
step = log2f(curdiff); |
| fd257dc4 |
if (dist > uplim[w*16+g]) |
| 78e65cd7 |
step = -step; |
| 32fa7725 |
scf += step; |
| 46174079 |
scf = av_clip_uint8(scf); |
| 32fa7725 |
step = scf - prev_scf; |
| fd257dc4 |
if (FFABS(step) <= 1 || (step > 0 && scf >= max_scf) || (step < 0 && scf <= min_scf)) { |
| 32fa7725 |
sce->sf_idx[w*16+g] = av_clip(scf, min_scf, max_scf); |
| 78e65cd7 |
break;
} |
| fd257dc4 |
if (step > 0) |
| 32fa7725 |
min_scf = prev_scf; |
| 78e65cd7 |
else |
| 32fa7725 |
max_scf = prev_scf; |
| 78e65cd7 |
}
start += size;
}
}
minq = sce->sf_idx[0] ? sce->sf_idx[0] : INT_MAX; |
| fd257dc4 |
for (i = 1; i < 128; i++) {
if (!sce->sf_idx[i]) |
| 78e65cd7 |
sce->sf_idx[i] = sce->sf_idx[i-1];
else
minq = FFMIN(minq, sce->sf_idx[i]);
} |
| c8f47d8b |
if (minq == INT_MAX)
minq = 0; |
| 78e65cd7 |
minq = FFMIN(minq, SCALE_MAX_POS);
maxsf = FFMIN(minq + SCALE_MAX_DIFF, SCALE_MAX_POS); |
| fd257dc4 |
for (i = 126; i >= 0; i--) {
if (!sce->sf_idx[i]) |
| 78e65cd7 |
sce->sf_idx[i] = sce->sf_idx[i+1];
sce->sf_idx[i] = av_clip(sce->sf_idx[i], minq, maxsf);
}
}
static void search_for_quantizers_fast(AVCodecContext *avctx, AACEncContext *s, |
| 99d61d34 |
SingleChannelElement *sce,
const float lambda) |
| 78e65cd7 |
{ |
| e65ab9d9 |
int i, w, w2, g; |
| 78e65cd7 |
int minq = 255;
memset(sce->sf_idx, 0, sizeof(sce->sf_idx)); |
| fd257dc4 |
for (w = 0; w < sce->ics.num_windows; w += sce->ics.group_len[w]) {
for (g = 0; g < sce->ics.num_swb; g++) {
for (w2 = 0; w2 < sce->ics.group_len[w]; w2++) { |
| 0bc01cc9 |
FFPsyBand *band = &s->psy.ch[s->cur_channel].psy_bands[(w+w2)*16+g]; |
| fd257dc4 |
if (band->energy <= band->threshold) { |
| 78e65cd7 |
sce->sf_idx[(w+w2)*16+g] = 218;
sce->zeroes[(w+w2)*16+g] = 1; |
| fd257dc4 |
} else { |
| 51ffd3a6 |
sce->sf_idx[(w+w2)*16+g] = av_clip(SCALE_ONE_POS - SCALE_DIV_512 + log2f(band->threshold), 80, 218); |
| 78e65cd7 |
sce->zeroes[(w+w2)*16+g] = 0;
}
minq = FFMIN(minq, sce->sf_idx[(w+w2)*16+g]);
}
}
} |
| fd257dc4 |
for (i = 0; i < 128; i++) { |
| c8f47d8b |
sce->sf_idx[i] = 140;
//av_clip(sce->sf_idx[i], minq, minq + SCALE_MAX_DIFF - 1); |
| 78e65cd7 |
}
//set the same quantizers inside window groups |
| fd257dc4 |
for (w = 0; w < sce->ics.num_windows; w += sce->ics.group_len[w])
for (g = 0; g < sce->ics.num_swb; g++)
for (w2 = 1; w2 < sce->ics.group_len[w]; w2++) |
| 78e65cd7 |
sce->sf_idx[(w+w2)*16+g] = sce->sf_idx[w*16+g];
}
|
| 6d175158 |
static void search_for_pns(AACEncContext *s, AVCodecContext *avctx, SingleChannelElement *sce) |
| 38fd4c2e |
{
int start = 0, w, w2, g; |
| 6d175158 |
const float lambda = s->lambda; |
| 38fd4c2e |
const float freq_mult = avctx->sample_rate/(1024.0f/sce->ics.num_windows)/2.0f;
const float spread_threshold = NOISE_SPREAD_THRESHOLD*(lambda/120.f);
const float thr_mult = NOISE_LAMBDA_NUMERATOR/lambda;
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++) {
if (start*freq_mult > NOISE_LOW_LIMIT*(lambda/170.0f)) {
float energy = 0.0f, threshold = 0.0f, spread = 0.0f;
for (w2 = 0; w2 < sce->ics.group_len[w]; w2++) {
FFPsyBand *band = &s->psy.ch[s->cur_channel+0].psy_bands[(w+w2)*16+g];
energy += band->energy;
threshold += band->threshold;
spread += band->spread;
}
if (spread > spread_threshold*sce->ics.group_len[w] &&
((sce->zeroes[w*16+g] && energy >= threshold) ||
energy < threshold*thr_mult*sce->ics.group_len[w])) {
sce->band_type[w*16+g] = NOISE_BT;
sce->pns_ener[w*16+g] = energy / sce->ics.group_len[w];
sce->zeroes[w*16+g] = 0;
}
}
start += sce->ics.swb_sizes[g];
}
}
}
|
| 6d175158 |
static void search_for_ms(AACEncContext *s, ChannelElement *cpe) |
| 78e65cd7 |
{
int start = 0, i, w, w2, g;
float M[128], S[128];
float *L34 = s->scoefs, *R34 = s->scoefs + 128, *M34 = s->scoefs + 128*2, *S34 = s->scoefs + 128*3; |
| 6d175158 |
const float lambda = s->lambda; |
| 78e65cd7 |
SingleChannelElement *sce0 = &cpe->ch[0];
SingleChannelElement *sce1 = &cpe->ch[1]; |
| fd257dc4 |
if (!cpe->common_window) |
| 78e65cd7 |
return; |
| fd257dc4 |
for (w = 0; w < sce0->ics.num_windows; w += sce0->ics.group_len[w]) { |
| 57848ef3 |
start = 0; |
| fd257dc4 |
for (g = 0; g < sce0->ics.num_swb; g++) { |
| d1ca7142 |
if (!cpe->ch[0].zeroes[w*16+g] && !cpe->ch[1].zeroes[w*16+g]) { |
| 78e65cd7 |
float dist1 = 0.0f, dist2 = 0.0f; |
| fd257dc4 |
for (w2 = 0; w2 < sce0->ics.group_len[w]; w2++) { |
| 0bc01cc9 |
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]; |
| 988c1705 |
float minthr = FFMIN(band0->threshold, band1->threshold);
float maxthr = FFMAX(band0->threshold, band1->threshold); |
| fd257dc4 |
for (i = 0; i < sce0->ics.swb_sizes[g]; i++) { |
| 32be264c |
M[i] = (sce0->coeffs[start+(w+w2)*128+i]
+ sce1->coeffs[start+(w+w2)*128+i]) * 0.5; |
| 92efa2bd |
S[i] = M[i] |
| 32be264c |
- sce1->coeffs[start+(w+w2)*128+i]; |
| 78e65cd7 |
} |
| 57848ef3 |
abs_pow34_v(L34, sce0->coeffs+start+(w+w2)*128, sce0->ics.swb_sizes[g]);
abs_pow34_v(R34, sce1->coeffs+start+(w+w2)*128, sce0->ics.swb_sizes[g]); |
| 78e65cd7 |
abs_pow34_v(M34, M, sce0->ics.swb_sizes[g]);
abs_pow34_v(S34, S, sce0->ics.swb_sizes[g]); |
| 32be264c |
dist1 += quantize_band_cost(s, &sce0->coeffs[start + (w+w2)*128], |
| 78e65cd7 |
L34,
sce0->ics.swb_sizes[g],
sce0->sf_idx[(w+w2)*16+g],
sce0->band_type[(w+w2)*16+g], |
| 59216e05 |
lambda / band0->threshold, INFINITY, NULL, 0); |
| 32be264c |
dist1 += quantize_band_cost(s, &sce1->coeffs[start + (w+w2)*128], |
| 78e65cd7 |
R34,
sce1->ics.swb_sizes[g],
sce1->sf_idx[(w+w2)*16+g],
sce1->band_type[(w+w2)*16+g], |
| 59216e05 |
lambda / band1->threshold, INFINITY, NULL, 0); |
| 78e65cd7 |
dist2 += quantize_band_cost(s, M,
M34,
sce0->ics.swb_sizes[g],
sce0->sf_idx[(w+w2)*16+g],
sce0->band_type[(w+w2)*16+g], |
| 59216e05 |
lambda / maxthr, INFINITY, NULL, 0); |
| 78e65cd7 |
dist2 += quantize_band_cost(s, S,
S34,
sce1->ics.swb_sizes[g],
sce1->sf_idx[(w+w2)*16+g],
sce1->band_type[(w+w2)*16+g], |
| 59216e05 |
lambda / minthr, INFINITY, NULL, 0); |
| 78e65cd7 |
}
cpe->ms_mask[w*16+g] = dist2 < dist1;
}
start += sce0->ics.swb_sizes[g];
}
}
}
|
| 1b122387 |
AACCoefficientsEncoder ff_aac_coders[AAC_CODER_NB] = { |
| 4bd910d8 |
[AAC_CODER_FAAC] = { |
| 78e65cd7 |
search_for_quantizers_faac, |
| 7a4eebcd |
encode_window_bands_info, |
| 78e65cd7 |
quantize_and_encode_band, |
| 21dd5279 |
ff_aac_encode_tns_info,
ff_aac_encode_main_pred,
ff_aac_adjust_common_prediction,
ff_aac_apply_main_pred, |
| f20b6717 |
ff_aac_apply_tns, |
| e06578e3 |
set_special_band_scalefactors, |
| 38fd4c2e |
search_for_pns, |
| 21dd5279 |
ff_aac_search_for_tns, |
| dd0e43e4 |
search_for_ms, |
| 21dd5279 |
ff_aac_search_for_is,
ff_aac_search_for_pred, |
| 78e65cd7 |
}, |
| 4bd910d8 |
[AAC_CODER_ANMR] = { |
| 78e65cd7 |
search_for_quantizers_anmr,
encode_window_bands_info,
quantize_and_encode_band, |
| 21dd5279 |
ff_aac_encode_tns_info,
ff_aac_encode_main_pred,
ff_aac_adjust_common_prediction,
ff_aac_apply_main_pred, |
| f20b6717 |
ff_aac_apply_tns, |
| e06578e3 |
set_special_band_scalefactors, |
| 38fd4c2e |
search_for_pns, |
| 21dd5279 |
ff_aac_search_for_tns, |
| dd0e43e4 |
search_for_ms, |
| 21dd5279 |
ff_aac_search_for_is,
ff_aac_search_for_pred, |
| 78e65cd7 |
}, |
| 4bd910d8 |
[AAC_CODER_TWOLOOP] = { |
| 78e65cd7 |
search_for_quantizers_twoloop, |
| 759510e6 |
codebook_trellis_rate, |
| 78e65cd7 |
quantize_and_encode_band, |
| 21dd5279 |
ff_aac_encode_tns_info,
ff_aac_encode_main_pred,
ff_aac_adjust_common_prediction,
ff_aac_apply_main_pred, |
| f20b6717 |
ff_aac_apply_tns, |
| e06578e3 |
set_special_band_scalefactors, |
| 38fd4c2e |
search_for_pns, |
| 21dd5279 |
ff_aac_search_for_tns, |
| dd0e43e4 |
search_for_ms, |
| 21dd5279 |
ff_aac_search_for_is,
ff_aac_search_for_pred, |
| 78e65cd7 |
}, |
| 4bd910d8 |
[AAC_CODER_FAST] = { |
| 78e65cd7 |
search_for_quantizers_fast,
encode_window_bands_info,
quantize_and_encode_band, |
| 21dd5279 |
ff_aac_encode_tns_info,
ff_aac_encode_main_pred,
ff_aac_adjust_common_prediction,
ff_aac_apply_main_pred, |
| f20b6717 |
ff_aac_apply_tns, |
| e06578e3 |
set_special_band_scalefactors, |
| 38fd4c2e |
search_for_pns, |
| 21dd5279 |
ff_aac_search_for_tns, |
| dd0e43e4 |
search_for_ms, |
| 21dd5279 |
ff_aac_search_for_is,
ff_aac_search_for_pred, |
| 78e65cd7 |
},
}; |