mirror of
https://gitee.com/openharmony/third_party_ffmpeg
synced 2024-11-23 11:19:55 +00:00
aacenc: remove FAAC-like coder
Has been marked for removal for over a month and has not been improved or touched at all since it was implemented. Signed-off-by: Rostislav Pehlivanov <atomnuker@gmail.com>
This commit is contained in:
Rostislav Pehlivanov
parent
a72b1ea826
commit
6a505e955b
@ -392,175 +392,6 @@ static void search_for_quantizers_anmr(AVCodecContext *avctx, AACEncContext *s,
|
||||
sce->sf_idx[(w+w2)*16+g] = sce->sf_idx[w*16+g];
|
||||
}
|
||||
|
||||
|
||||
static void search_for_quantizers_faac(AVCodecContext *avctx, AACEncContext *s,
|
||||
SingleChannelElement *sce,
|
||||
const float lambda)
|
||||
{
|
||||
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;
|
||||
if (sce->ics.num_windows == 1) {
|
||||
start = 0;
|
||||
for (i = 0; i < 1024; i++) {
|
||||
if (i - start >= sce->ics.swb_sizes[curband]) {
|
||||
start += sce->ics.swb_sizes[curband];
|
||||
curband++;
|
||||
}
|
||||
if (sce->coeffs[i]) {
|
||||
avg_energy += sce->coeffs[i] * sce->coeffs[i];
|
||||
last = i;
|
||||
lastband = curband;
|
||||
}
|
||||
}
|
||||
} else {
|
||||
for (w = 0; w < 8; w++) {
|
||||
const float *coeffs = &sce->coeffs[w*128];
|
||||
curband = start = 0;
|
||||
for (i = 0; i < 128; i++) {
|
||||
if (i - start >= sce->ics.swb_sizes[curband]) {
|
||||
start += sce->ics.swb_sizes[curband];
|
||||
curband++;
|
||||
}
|
||||
if (coeffs[i]) {
|
||||
avg_energy += coeffs[i] * coeffs[i];
|
||||
last = FFMAX(last, i);
|
||||
lastband = FFMAX(lastband, curband);
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
last++;
|
||||
avg_energy /= last;
|
||||
if (avg_energy == 0.0f) {
|
||||
for (i = 0; i < FF_ARRAY_ELEMS(sce->sf_idx); i++)
|
||||
sce->sf_idx[i] = SCALE_ONE_POS;
|
||||
return;
|
||||
}
|
||||
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++) {
|
||||
float *coefs = &sce->coeffs[start];
|
||||
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;
|
||||
if (g > lastband) {
|
||||
maxq[w*16+g] = 0.0f;
|
||||
start += size;
|
||||
for (w2 = 0; w2 < sce->ics.group_len[w]; w2++)
|
||||
memset(coefs + w2*128, 0, sizeof(coefs[0])*size);
|
||||
continue;
|
||||
}
|
||||
for (w2 = 0; w2 < sce->ics.group_len[w]; w2++) {
|
||||
for (i = 0; i < size; i++) {
|
||||
float t = coefs[w2*128+i]*coefs[w2*128+i];
|
||||
maxq[w*16+g] = FFMAX(maxq[w*16+g], fabsf(coefs[w2*128 + i]));
|
||||
thr += t;
|
||||
if (sce->ics.num_windows == 1 && maxval < t) {
|
||||
maxval = t;
|
||||
peakpos = start+i;
|
||||
}
|
||||
}
|
||||
}
|
||||
if (sce->ics.num_windows == 1) {
|
||||
start2 = FFMAX(peakpos - 2, start2);
|
||||
end2 = FFMIN(peakpos + 3, end2);
|
||||
} else {
|
||||
start2 -= start;
|
||||
end2 -= start;
|
||||
}
|
||||
start += size;
|
||||
thr = pow(thr / (avg_energy * (end2 - start2)), 0.3 + 0.1*(lastband - g) / lastband);
|
||||
t = 1.0 - (1.0 * start2 / last);
|
||||
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);
|
||||
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 *coefs = &sce->coeffs[start];
|
||||
const float *scaled = &s->scoefs[start];
|
||||
const int size = sce->ics.swb_sizes[g];
|
||||
int scf, prev_scf, step;
|
||||
int min_scf = -1, max_scf = 256;
|
||||
float curdiff;
|
||||
if (maxq[w*16+g] < 21.544) {
|
||||
sce->zeroes[w*16+g] = 1;
|
||||
start += size;
|
||||
continue;
|
||||
}
|
||||
sce->zeroes[w*16+g] = 0;
|
||||
scf = prev_scf = av_clip(SCALE_ONE_POS - SCALE_DIV_512 - log2f(1/maxq[w*16+g])*16/3, 60, 218);
|
||||
for (;;) {
|
||||
float dist = 0.0f;
|
||||
int quant_max;
|
||||
|
||||
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],
|
||||
scf,
|
||||
ESC_BT,
|
||||
lambda,
|
||||
INFINITY,
|
||||
&b, NULL,
|
||||
0);
|
||||
dist -= b;
|
||||
}
|
||||
dist *= 1.0f / 512.0f / lambda;
|
||||
quant_max = quant(maxq[w*16+g], ff_aac_pow2sf_tab[POW_SF2_ZERO - scf + SCALE_ONE_POS - SCALE_DIV_512], ROUND_STANDARD);
|
||||
if (quant_max >= 8191) { // too much, return to the previous quantizer
|
||||
sce->sf_idx[w*16+g] = prev_scf;
|
||||
break;
|
||||
}
|
||||
prev_scf = scf;
|
||||
curdiff = fabsf(dist - uplim[w*16+g]);
|
||||
if (curdiff <= 1.0f)
|
||||
step = 0;
|
||||
else
|
||||
step = log2f(curdiff);
|
||||
if (dist > uplim[w*16+g])
|
||||
step = -step;
|
||||
scf += step;
|
||||
scf = av_clip_uint8(scf);
|
||||
step = scf - prev_scf;
|
||||
if (FFABS(step) <= 1 || (step > 0 && scf >= max_scf) || (step < 0 && scf <= min_scf)) {
|
||||
sce->sf_idx[w*16+g] = av_clip(scf, min_scf, max_scf);
|
||||
break;
|
||||
}
|
||||
if (step > 0)
|
||||
min_scf = prev_scf;
|
||||
else
|
||||
max_scf = prev_scf;
|
||||
}
|
||||
start += size;
|
||||
}
|
||||
}
|
||||
minq = sce->sf_idx[0] ? sce->sf_idx[0] : INT_MAX;
|
||||
for (i = 1; i < 128; i++) {
|
||||
if (!sce->sf_idx[i])
|
||||
sce->sf_idx[i] = sce->sf_idx[i-1];
|
||||
else
|
||||
minq = FFMIN(minq, sce->sf_idx[i]);
|
||||
}
|
||||
if (minq == INT_MAX)
|
||||
minq = 0;
|
||||
minq = FFMIN(minq, SCALE_MAX_POS);
|
||||
maxsf = FFMIN(minq + SCALE_MAX_DIFF, SCALE_MAX_POS);
|
||||
for (i = 126; i >= 0; i--) {
|
||||
if (!sce->sf_idx[i])
|
||||
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,
|
||||
SingleChannelElement *sce,
|
||||
const float lambda)
|
||||
@ -951,28 +782,6 @@ static void search_for_ms(AACEncContext *s, ChannelElement *cpe)
|
||||
}
|
||||
|
||||
AACCoefficientsEncoder ff_aac_coders[AAC_CODER_NB] = {
|
||||
[AAC_CODER_FAAC] = {
|
||||
search_for_quantizers_faac,
|
||||
encode_window_bands_info,
|
||||
quantize_and_encode_band,
|
||||
ff_aac_encode_tns_info,
|
||||
ff_aac_encode_ltp_info,
|
||||
ff_aac_encode_main_pred,
|
||||
ff_aac_adjust_common_pred,
|
||||
ff_aac_adjust_common_ltp,
|
||||
ff_aac_apply_main_pred,
|
||||
ff_aac_apply_tns,
|
||||
ff_aac_update_ltp,
|
||||
ff_aac_ltp_insert_new_frame,
|
||||
set_special_band_scalefactors,
|
||||
search_for_pns,
|
||||
mark_pns,
|
||||
ff_aac_search_for_tns,
|
||||
ff_aac_search_for_ltp,
|
||||
search_for_ms,
|
||||
ff_aac_search_for_is,
|
||||
ff_aac_search_for_pred,
|
||||
},
|
||||
[AAC_CODER_ANMR] = {
|
||||
search_for_quantizers_anmr,
|
||||
encode_window_bands_info,
|
||||
|
||||
@ -983,8 +983,6 @@ static av_cold int aac_encode_init(AVCodecContext *avctx)
|
||||
if (s->options.coder != AAC_CODER_TWOLOOP) {
|
||||
ERROR_IF(avctx->strict_std_compliance > FF_COMPLIANCE_EXPERIMENTAL,
|
||||
"Coders other than twoloop require -strict -2 and some may be removed in the future\n");
|
||||
WARN_IF(s->options.coder == AAC_CODER_FAAC,
|
||||
"The FAAC-like coder will be removed in the near future, please use twoloop!\n");
|
||||
s->options.intensity_stereo = 0;
|
||||
s->options.pns = 0;
|
||||
}
|
||||
@ -1029,8 +1027,7 @@ fail:
|
||||
|
||||
#define AACENC_FLAGS AV_OPT_FLAG_ENCODING_PARAM | AV_OPT_FLAG_AUDIO_PARAM
|
||||
static const AVOption aacenc_options[] = {
|
||||
{"aac_coder", "Coding algorithm", offsetof(AACEncContext, options.coder), AV_OPT_TYPE_INT, {.i64 = AAC_CODER_TWOLOOP}, -1, AAC_CODER_NB-1, AACENC_FLAGS, "coder"},
|
||||
{"faac", "FAAC-inspired method", 0, AV_OPT_TYPE_CONST, {.i64 = AAC_CODER_FAAC}, INT_MIN, INT_MAX, AACENC_FLAGS, "coder"},
|
||||
{"aac_coder", "Coding algorithm", offsetof(AACEncContext, options.coder), AV_OPT_TYPE_INT, {.i64 = AAC_CODER_TWOLOOP}, 0, AAC_CODER_NB-1, AACENC_FLAGS, "coder"},
|
||||
{"anmr", "ANMR method", 0, AV_OPT_TYPE_CONST, {.i64 = AAC_CODER_ANMR}, INT_MIN, INT_MAX, AACENC_FLAGS, "coder"},
|
||||
{"twoloop", "Two loop searching method", 0, AV_OPT_TYPE_CONST, {.i64 = AAC_CODER_TWOLOOP}, INT_MIN, INT_MAX, AACENC_FLAGS, "coder"},
|
||||
{"fast", "Constant quantizer", 0, AV_OPT_TYPE_CONST, {.i64 = AAC_CODER_FAST}, INT_MIN, INT_MAX, AACENC_FLAGS, "coder"},
|
||||
|
||||
@ -34,8 +34,7 @@
|
||||
#include "lpc.h"
|
||||
|
||||
typedef enum AACCoder {
|
||||
AAC_CODER_FAAC = 0,
|
||||
AAC_CODER_ANMR,
|
||||
AAC_CODER_ANMR = 0,
|
||||
AAC_CODER_TWOLOOP,
|
||||
AAC_CODER_FAST,
|
||||
|
||||
|
||||
Loading…
Reference in New Issue
Block a user