/***********************************
* TODOs:
* add sane pulse detection
- * add temporal noise shaping
***********************************/
#include "libavutil/float_dsp.h"
{
int i, w, w2, g, ch;
int maxsfb, cmaxsfb;
- IndividualChannelStream *ics;
-
- if (cpe->common_window) {
- ics = &cpe->ch[0].ics;
- for (w = 0; w < ics->num_windows; w += ics->group_len[w]) {
- for (w2 = 0; w2 < ics->group_len[w]; w2++) {
- int start = (w+w2) * 128;
- for (g = 0; g < ics->num_swb; g++) {
- //apply Intensity stereo coeffs transformation
- if (cpe->is_mask[w*16 + g]) {
- int p = -1 + 2 * (cpe->ch[1].band_type[w*16+g] - 14);
- float scale = cpe->ch[0].is_ener[w*16+g];
- for (i = 0; i < ics->swb_sizes[g]; i++) {
- cpe->ch[0].coeffs[start+i] = (cpe->ch[0].coeffs[start+i] + p*cpe->ch[1].coeffs[start+i]) * scale;
- cpe->ch[1].coeffs[start+i] = 0.0f;
- }
- } else if (cpe->ms_mask[w*16 + g] &&
- cpe->ch[0].band_type[w*16 + g] < NOISE_BT &&
- cpe->ch[1].band_type[w*16 + g] < NOISE_BT) {
- for (i = 0; i < ics->swb_sizes[g]; i++) {
- float L = (cpe->ch[0].coeffs[start+i] + cpe->ch[1].coeffs[start+i]) * 0.5f;
- float R = L - cpe->ch[1].coeffs[start+i];
- cpe->ch[0].coeffs[start+i] = L;
- cpe->ch[1].coeffs[start+i] = R;
- }
- }
- start += ics->swb_sizes[g];
- }
- }
- }
- }
for (ch = 0; ch < chans; ch++) {
IndividualChannelStream *ics = &cpe->ch[ch].ics;
}
}
+static void apply_intensity_stereo(ChannelElement *cpe)
+{
+ int w, w2, g, i;
+ IndividualChannelStream *ics = &cpe->ch[0].ics;
+ if (!cpe->common_window)
+ return;
+ for (w = 0; w < ics->num_windows; w += ics->group_len[w]) {
+ for (w2 = 0; w2 < ics->group_len[w]; w2++) {
+ int start = (w+w2) * 128;
+ for (g = 0; g < ics->num_swb; g++) {
+ int p = -1 + 2 * (cpe->ch[1].band_type[w*16+g] - 14);
+ float scale = cpe->ch[0].is_ener[w*16+g];
+ if (!cpe->is_mask[w*16 + g]) {
+ start += ics->swb_sizes[g];
+ continue;
+ }
+ for (i = 0; i < ics->swb_sizes[g]; i++) {
+ float sum = (cpe->ch[0].coeffs[start+i] + p*cpe->ch[1].coeffs[start+i])*scale;
+ cpe->ch[0].coeffs[start+i] = sum;
+ cpe->ch[1].coeffs[start+i] = 0.0f;
+ }
+ start += ics->swb_sizes[g];
+ }
+ }
+ }
+}
+
+static void apply_mid_side_stereo(ChannelElement *cpe)
+{
+ int w, w2, g, i;
+ IndividualChannelStream *ics = &cpe->ch[0].ics;
+ if (!cpe->common_window)
+ return;
+ for (w = 0; w < ics->num_windows; w += ics->group_len[w]) {
+ for (w2 = 0; w2 < ics->group_len[w]; w2++) {
+ int start = (w+w2) * 128;
+ for (g = 0; g < ics->num_swb; g++) {
+ if (!cpe->ms_mask[w*16 + g]) {
+ start += ics->swb_sizes[g];
+ continue;
+ }
+ for (i = 0; i < ics->swb_sizes[g]; i++) {
+ float L = (cpe->ch[0].coeffs[start+i] + cpe->ch[1].coeffs[start+i]) * 0.5f;
+ float R = L - cpe->ch[1].coeffs[start+i];
+ cpe->ch[0].coeffs[start+i] = L;
+ cpe->ch[1].coeffs[start+i] = R;
+ }
+ start += ics->swb_sizes[g];
+ }
+ }
+ }
+}
+
/**
* Encode scalefactor band coding type.
*/
{
int w;
+ if (s->coder->set_special_band_scalefactors)
+ s->coder->set_special_band_scalefactors(s, sce);
+
for (w = 0; w < sce->ics.num_windows; w += sce->ics.group_len[w])
s->coder->encode_window_bands_info(s, sce, w, sce->ics.group_len[w], s->lambda);
}
start += sce->ics.swb_sizes[i];
continue;
}
- for (w2 = w; w2 < w + sce->ics.group_len[w]; w2++)
+ for (w2 = w; w2 < w + sce->ics.group_len[w]; w2++) {
s->coder->quantize_and_encode_band(s, &s->pb,
&sce->coeffs[start + w2*128],
- &sce->pqcoeffs[start + w2*128],
- sce->ics.swb_sizes[i],
+ NULL, sce->ics.swb_sizes[i],
sce->sf_idx[w*16 + i],
sce->band_type[w*16 + i],
s->lambda,
sce->ics.window_clipping[w]);
+ }
start += sce->ics.swb_sizes[i];
}
}
encode_band_info(s, sce);
encode_scale_factors(avctx, s, sce);
encode_pulses(s, &sce->pulse);
+ put_bits(&s->pb, 1, !!sce->tns.present);
if (s->coder->encode_tns_info)
s->coder->encode_tns_info(s, sce);
- else
- put_bits(&s->pb, 1, 0);
put_bits(&s->pb, 1, 0); //ssr
encode_spectral_coeffs(s, sce);
return 0;
float **samples = s->planar_samples, *samples2, *la, *overlap;
ChannelElement *cpe;
SingleChannelElement *sce;
- int i, ch, w, g, chans, tag, start_ch, ret;
+ int i, ch, w, chans, tag, start_ch, ret;
int ms_mode = 0, is_mode = 0, tns_mode = 0, pred_mode = 0;
int chan_el_counter[4];
FFPsyWindowInfo windows[AAC_MAX_CHANNELS];
ics->swb_offset = wi[ch].window_type[0] == EIGHT_SHORT_SEQUENCE ?
ff_swb_offset_128 [s->samplerate_index]:
ff_swb_offset_1024[s->samplerate_index];
+ 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];
tag = s->chan_map[i+1];
chans = tag == TYPE_CPE ? 2 : 1;
cpe = &s->cpe[i];
+ cpe->common_window = 0;
memset(cpe->is_mask, 0, sizeof(cpe->is_mask));
memset(cpe->ms_mask, 0, sizeof(cpe->ms_mask));
put_bits(&s->pb, 3, tag);
s->cur_channel = start_ch + ch;
s->coder->search_for_quantizers(avctx, s, &cpe->ch[ch], s->lambda);
}
- cpe->common_window = 0;
if (chans > 1
&& wi[0].window_type[0] == wi[1].window_type[0]
&& wi[0].window_shape == wi[1].window_shape) {
}
}
}
- for (ch = 0; ch < chans; ch++) {
+ for (ch = 0; ch < chans; ch++) { /* TNS and PNS */
sce = &cpe->ch[ch];
s->cur_channel = start_ch + ch;
if (s->options.pns && s->coder->search_for_pns)
s->coder->search_for_pns(s, avctx, sce);
if (s->options.tns && s->coder->search_for_tns)
s->coder->search_for_tns(s, sce);
- if (s->options.pred && s->coder->search_for_pred)
- s->coder->search_for_pred(s, sce);
+ if (s->options.tns && s->coder->apply_tns_filt)
+ s->coder->apply_tns_filt(s, sce);
if (sce->tns.present)
tns_mode = 1;
- if (sce->ics.predictor_present)
- pred_mode = 1;
}
s->cur_channel = start_ch;
- if (s->options.stereo_mode && cpe->common_window) {
- if (s->options.stereo_mode > 0) {
- IndividualChannelStream *ics = &cpe->ch[0].ics;
- for (w = 0; w < ics->num_windows; w += ics->group_len[w])
- for (g = 0; g < ics->num_swb; g++)
- cpe->ms_mask[w*16+g] = 1;
- } else if (s->coder->search_for_ms) {
- s->coder->search_for_ms(s, cpe);
+ if (s->options.intensity_stereo) { /* Intensity Stereo */
+ if (s->coder->search_for_is)
+ s->coder->search_for_is(s, avctx, cpe);
+ if (cpe->is_mode) is_mode = 1;
+ apply_intensity_stereo(cpe);
+ }
+ if (s->options.pred) { /* Prediction */
+ for (ch = 0; ch < chans; ch++) {
+ sce = &cpe->ch[ch];
+ s->cur_channel = start_ch + ch;
+ if (s->options.pred && s->coder->search_for_pred)
+ s->coder->search_for_pred(s, sce);
+ if (cpe->ch[ch].ics.predictor_present) pred_mode = 1;
}
+ if (s->coder->adjust_common_prediction)
+ s->coder->adjust_common_prediction(s, cpe);
+ for (ch = 0; ch < chans; ch++) {
+ sce = &cpe->ch[ch];
+ s->cur_channel = start_ch + ch;
+ if (s->options.pred && s->coder->apply_main_pred)
+ s->coder->apply_main_pred(s, sce);
+ }
+ s->cur_channel = start_ch;
}
- if (s->options.intensity_stereo && s->coder->search_for_is) {
- s->coder->search_for_is(s, avctx, cpe);
- if (cpe->is_mode) is_mode = 1;
+ if (s->options.stereo_mode) { /* Mid/Side stereo */
+ if (s->options.stereo_mode == -1 && s->coder->search_for_ms)
+ s->coder->search_for_ms(s, cpe);
+ else if (cpe->common_window)
+ memset(cpe->ms_mask, 1, sizeof(cpe->ms_mask));
+ for (w = 0; w < 128; w++)
+ cpe->ms_mask[w] = cpe->is_mask[w] ? 0 : cpe->ms_mask[w];
+ apply_mid_side_stereo(cpe);
}
- if (s->options.pred && s->coder->adjust_common_prediction)
- s->coder->adjust_common_prediction(s, cpe);
- if (s->coder->set_special_band_scalefactors)
- for (ch = 0; ch < chans; ch++)
- s->coder->set_special_band_scalefactors(s, &cpe->ch[ch]);
- if (s->options.pred && s->coder->apply_main_pred)
- for (ch = 0; ch < chans; ch++)
- s->coder->apply_main_pred(s, &cpe->ch[ch]);
adjust_frame_information(cpe, chans);
if (chans == 2) {
put_bits(&s->pb, 1, cpe->common_window);
} while (1);
- // update predictor state
- if (s->options.pred && s->coder->update_main_pred) {
- for (i = 0; i < s->chan_map[0]; i++) {
- cpe = &s->cpe[i];
- for (ch = 0; ch < chans; ch++)
- s->coder->update_main_pred(s, &cpe->ch[ch],
- (cpe->common_window && !ch) ? cpe : NULL);
- }
- }
-
put_bits(&s->pb, 3, TYPE_END);
flush_put_bits(&s->pb);
avctx->frame_bits = put_bits_count(&s->pb);
"Too many bits per frame requested, clamping to max\n");
if (avctx->profile == FF_PROFILE_AAC_MAIN) {
s->options.pred = 1;
- } else if (avctx->profile == FF_PROFILE_AAC_LOW && s->options.pred) {
+ } else if ((avctx->profile == FF_PROFILE_AAC_LOW ||
+ avctx->profile == FF_PROFILE_UNKNOWN) && s->options.pred) {
s->profile = 0; /* Main */
WARN_IF(1, "Prediction requested, changing profile to AAC-Main\n");
} else if (avctx->profile == FF_PROFILE_AAC_LOW ||
- avctx->profile == FF_PROFILE_UNKNOWN) {
+ avctx->profile == FF_PROFILE_UNKNOWN) {
s->profile = 1; /* Low */
} else {
ERROR_IF(1, "Unsupported profile %d\n", avctx->profile);
}
+ if (s->options.aac_coder != AAC_CODER_TWOLOOP) {
+ s->options.intensity_stereo = 0;
+ s->options.pns = 0;
+ }
+
avctx->bit_rate = (int)FFMIN(
6144 * s->channels / 1024.0 * avctx->sample_rate,
avctx->bit_rate);
goto fail;
s->psypp = ff_psy_preprocess_init(avctx);
s->coder = &ff_aac_coders[s->options.aac_coder];
- ff_lpc_init(&s->lpc, avctx->frame_size, TNS_MAX_ORDER, FF_LPC_TYPE_LEVINSON);
+ ff_lpc_init(&s->lpc, 2*avctx->frame_size, TNS_MAX_ORDER, FF_LPC_TYPE_LEVINSON);
if (HAVE_MIPSDSPR1)
ff_aac_coder_init_mips(s);
{"anmr", "ANMR method", 0, AV_OPT_TYPE_CONST, {.i64 = AAC_CODER_ANMR}, INT_MIN, INT_MAX, AACENC_FLAGS, "aac_coder"},
{"twoloop", "Two loop searching method", 0, AV_OPT_TYPE_CONST, {.i64 = AAC_CODER_TWOLOOP}, INT_MIN, INT_MAX, AACENC_FLAGS, "aac_coder"},
{"fast", "Constant quantizer", 0, AV_OPT_TYPE_CONST, {.i64 = AAC_CODER_FAST}, INT_MIN, INT_MAX, AACENC_FLAGS, "aac_coder"},
- {"aac_pns", "Perceptual Noise Substitution", offsetof(AACEncContext, options.pns), AV_OPT_TYPE_INT, {.i64 = 0}, 0, 1, AACENC_FLAGS, "aac_pns"},
+ {"aac_pns", "Perceptual Noise Substitution", offsetof(AACEncContext, options.pns), AV_OPT_TYPE_INT, {.i64 = 1}, 0, 1, AACENC_FLAGS, "aac_pns"},
{"disable", "Disable perceptual noise substitution", 0, AV_OPT_TYPE_CONST, {.i64 = 0 }, INT_MIN, INT_MAX, AACENC_FLAGS, "aac_pns"},
{"enable", "Enable perceptual noise substitution", 0, AV_OPT_TYPE_CONST, {.i64 = 1 }, INT_MIN, INT_MAX, AACENC_FLAGS, "aac_pns"},
- {"aac_is", "Intensity stereo coding", offsetof(AACEncContext, options.intensity_stereo), AV_OPT_TYPE_INT, {.i64 = 0}, 0, 1, AACENC_FLAGS, "intensity_stereo"},
+ {"aac_is", "Intensity stereo coding", offsetof(AACEncContext, options.intensity_stereo), AV_OPT_TYPE_INT, {.i64 = 1}, 0, 1, AACENC_FLAGS, "intensity_stereo"},
{"disable", "Disable intensity stereo coding", 0, AV_OPT_TYPE_CONST, {.i64 = 0}, INT_MIN, INT_MAX, AACENC_FLAGS, "intensity_stereo"},
{"enable", "Enable intensity stereo coding", 0, AV_OPT_TYPE_CONST, {.i64 = 1}, INT_MIN, INT_MAX, AACENC_FLAGS, "intensity_stereo"},
{"aac_tns", "Temporal noise shaping", offsetof(AACEncContext, options.tns), AV_OPT_TYPE_INT, {.i64 = 0}, 0, 1, AACENC_FLAGS, "aac_tns"},
projects / ffmpeg / blobdiff