From fd257dc4c0ee751ecf15830b91d28c15276fe93b Mon Sep 17 00:00:00 2001 From: Alex Converse Date: Wed, 8 Jul 2009 20:36:45 +0000 Subject: Cosmetics: Pretty print the AAC encoder. Originally committed as revision 19376 to svn://svn.ffmpeg.org/ffmpeg/trunk --- libavcodec/aacenc.c | 144 ++++++++++++++++++++++++++-------------------------- 1 file changed, 72 insertions(+), 72 deletions(-) (limited to 'libavcodec/aacenc.c') diff --git a/libavcodec/aacenc.c b/libavcodec/aacenc.c index bc18b73a2e..3484521e90 100644 --- a/libavcodec/aacenc.c +++ b/libavcodec/aacenc.c @@ -159,14 +159,14 @@ static av_cold int aac_encode_init(AVCodecContext *avctx) avctx->frame_size = 1024; - for(i = 0; i < 16; i++) - if(avctx->sample_rate == ff_mpeg4audio_sample_rates[i]) + for (i = 0; i < 16; i++) + if (avctx->sample_rate == ff_mpeg4audio_sample_rates[i]) break; - if(i == 16){ + if (i == 16) { av_log(avctx, AV_LOG_ERROR, "Unsupported sample rate %d\n", avctx->sample_rate); return -1; } - if(avctx->channels > 6){ + if (avctx->channels > 6) { av_log(avctx, AV_LOG_ERROR, "Unsupported number of channels: %d\n", avctx->channels); return -1; } @@ -218,35 +218,35 @@ static void apply_window_and_mdct(AVCodecContext *avctx, AACEncContext *s, if (sce->ics.window_sequence[0] != EIGHT_SHORT_SEQUENCE) { memcpy(s->output, sce->saved, sizeof(float)*1024); - if(sce->ics.window_sequence[0] == LONG_STOP_SEQUENCE){ + if (sce->ics.window_sequence[0] == LONG_STOP_SEQUENCE) { memset(s->output, 0, sizeof(s->output[0]) * 448); - for(i = 448; i < 576; i++) + for (i = 448; i < 576; i++) s->output[i] = sce->saved[i] * pwindow[i - 448]; - for(i = 576; i < 704; i++) + for (i = 576; i < 704; i++) s->output[i] = sce->saved[i]; } - if(sce->ics.window_sequence[0] != LONG_START_SEQUENCE){ + if (sce->ics.window_sequence[0] != LONG_START_SEQUENCE) { j = channel; - for (i = 0; i < 1024; i++, j += avctx->channels){ + for (i = 0; i < 1024; i++, j += avctx->channels) { s->output[i+1024] = audio[j] * lwindow[1024 - i - 1]; sce->saved[i] = audio[j] * lwindow[i]; } - }else{ + } else { j = channel; - for(i = 0; i < 448; i++, j += avctx->channels) + for (i = 0; i < 448; i++, j += avctx->channels) s->output[i+1024] = audio[j]; - for(i = 448; i < 576; i++, j += avctx->channels) + for (i = 448; i < 576; i++, j += avctx->channels) s->output[i+1024] = audio[j] * swindow[576 - i - 1]; memset(s->output+1024+576, 0, sizeof(s->output[0]) * 448); j = channel; - for(i = 0; i < 1024; i++, j += avctx->channels) + for (i = 0; i < 1024; i++, j += avctx->channels) sce->saved[i] = audio[j]; } ff_mdct_calc(&s->mdct1024, sce->coeffs, s->output); - }else{ + } else { j = channel; for (k = 0; k < 1024; k += 128) { - for(i = 448 + k; i < 448 + k + 256; i++) + for (i = 448 + k; i < 448 + k + 256; i++) s->output[i - 448 - k] = (i < 1024) ? sce->saved[i] : audio[channel + (i-1024)*avctx->channels]; @@ -255,7 +255,7 @@ static void apply_window_and_mdct(AVCodecContext *avctx, AACEncContext *s, ff_mdct_calc(&s->mdct128, sce->coeffs + k, s->output); } j = channel; - for(i = 0; i < 1024; i++, j += avctx->channels) + for (i = 0; i < 1024; i++, j += avctx->channels) sce->saved[i] = audio[j]; } } @@ -271,12 +271,12 @@ static void put_ics_info(AACEncContext *s, IndividualChannelStream *info) put_bits(&s->pb, 1, 0); // ics_reserved bit put_bits(&s->pb, 2, info->window_sequence[0]); put_bits(&s->pb, 1, info->use_kb_window[0]); - if(info->window_sequence[0] != EIGHT_SHORT_SEQUENCE){ + if (info->window_sequence[0] != EIGHT_SHORT_SEQUENCE) { put_bits(&s->pb, 6, info->max_sfb); put_bits(&s->pb, 1, 0); // no prediction - }else{ + } else { put_bits(&s->pb, 4, info->max_sfb); - for(w = 1; w < 8; w++){ + for (w = 1; w < 8; w++) { put_bits(&s->pb, 1, !info->group_len[w]); } } @@ -291,9 +291,9 @@ static void encode_ms_info(PutBitContext *pb, ChannelElement *cpe) int i, w; put_bits(pb, 2, cpe->ms_mode); - if(cpe->ms_mode == 1){ - for(w = 0; w < cpe->ch[0].ics.num_windows; w += cpe->ch[0].ics.group_len[w]){ - for(i = 0; i < cpe->ch[0].ics.max_sfb; i++) + if (cpe->ms_mode == 1) { + for (w = 0; w < cpe->ch[0].ics.num_windows; w += cpe->ch[0].ics.group_len[w]) { + for (i = 0; i < cpe->ch[0].ics.max_sfb; i++) put_bits(pb, 1, cpe->ms_mask[w*16 + i]); } } @@ -307,34 +307,34 @@ static void adjust_frame_information(AACEncContext *apc, ChannelElement *cpe, in int i, w, w2, g, ch; int start, sum, maxsfb, cmaxsfb; - for(ch = 0; ch < chans; ch++){ + for (ch = 0; ch < chans; ch++) { IndividualChannelStream *ics = &cpe->ch[ch].ics; start = 0; maxsfb = 0; cpe->ch[ch].pulse.num_pulse = 0; - for(w = 0; w < ics->num_windows*16; w += 16){ - for(g = 0; g < ics->num_swb; g++){ + for (w = 0; w < ics->num_windows*16; w += 16) { + for (g = 0; g < ics->num_swb; g++) { sum = 0; //apply M/S - if(!ch && cpe->ms_mask[w + g]){ - for(i = 0; i < ics->swb_sizes[g]; i++){ + if (!ch && cpe->ms_mask[w + g]) { + for (i = 0; i < ics->swb_sizes[g]; i++) { cpe->ch[0].coeffs[start+i] = (cpe->ch[0].coeffs[start+i] + cpe->ch[1].coeffs[start+i]) / 2.0; cpe->ch[1].coeffs[start+i] = cpe->ch[0].coeffs[start+i] - cpe->ch[1].coeffs[start+i]; } } start += ics->swb_sizes[g]; } - for(cmaxsfb = ics->num_swb; cmaxsfb > 0 && cpe->ch[ch].zeroes[w+cmaxsfb-1]; cmaxsfb--); + for (cmaxsfb = ics->num_swb; cmaxsfb > 0 && cpe->ch[ch].zeroes[w+cmaxsfb-1]; cmaxsfb--); maxsfb = FFMAX(maxsfb, cmaxsfb); } ics->max_sfb = maxsfb; //adjust zero bands for window groups - for(w = 0; w < ics->num_windows; w += ics->group_len[w]){ - for(g = 0; g < ics->max_sfb; g++){ + for (w = 0; w < ics->num_windows; w += ics->group_len[w]) { + for (g = 0; g < ics->max_sfb; g++) { i = 1; - for(w2 = w; w2 < w + ics->group_len[w]; w2++){ - if(!cpe->ch[ch].zeroes[w2*16 + g]){ + for (w2 = w; w2 < w + ics->group_len[w]; w2++) { + if (!cpe->ch[ch].zeroes[w2*16 + g]) { i = 0; break; } @@ -344,16 +344,16 @@ static void adjust_frame_information(AACEncContext *apc, ChannelElement *cpe, in } } - if(chans > 1 && cpe->common_window){ + if (chans > 1 && cpe->common_window) { IndividualChannelStream *ics0 = &cpe->ch[0].ics; IndividualChannelStream *ics1 = &cpe->ch[1].ics; int msc = 0; ics0->max_sfb = FFMAX(ics0->max_sfb, ics1->max_sfb); ics1->max_sfb = ics0->max_sfb; - for(w = 0; w < ics0->num_windows*16; w += 16) - for(i = 0; i < ics0->max_sfb; i++) - if(cpe->ms_mask[w+i]) msc++; - if(msc == 0 || ics0->max_sfb == 0) cpe->ms_mode = 0; + for (w = 0; w < ics0->num_windows*16; w += 16) + for (i = 0; i < ics0->max_sfb; i++) + if (cpe->ms_mask[w+i]) msc++; + if (msc == 0 || ics0->max_sfb == 0) cpe->ms_mode = 0; else cpe->ms_mode = msc < ics0->max_sfb ? 1 : 2; } } @@ -365,7 +365,7 @@ static void encode_band_info(AACEncContext *s, SingleChannelElement *sce) { int w; - for(w = 0; w < sce->ics.num_windows; w += sce->ics.group_len[w]){ + 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); } } @@ -378,11 +378,11 @@ static void encode_scale_factors(AVCodecContext *avctx, AACEncContext *s, Single int off = sce->sf_idx[0], diff; int i, w; - for(w = 0; w < sce->ics.num_windows; w += sce->ics.group_len[w]){ - for(i = 0; i < sce->ics.max_sfb; i++){ - if(!sce->zeroes[w*16 + i]){ + for (w = 0; w < sce->ics.num_windows; w += sce->ics.group_len[w]) { + for (i = 0; i < sce->ics.max_sfb; i++) { + if (!sce->zeroes[w*16 + i]) { diff = sce->sf_idx[w*16 + i] - off + SCALE_DIFF_ZERO; - if(diff < 0 || diff > 120) av_log(avctx, AV_LOG_ERROR, "Scalefactor difference is too big to be coded\n"); + if (diff < 0 || diff > 120) av_log(avctx, AV_LOG_ERROR, "Scalefactor difference is too big to be coded\n"); off = sce->sf_idx[w*16 + i]; put_bits(&s->pb, ff_aac_scalefactor_bits[diff], ff_aac_scalefactor_code[diff]); } @@ -398,11 +398,11 @@ static void encode_pulses(AACEncContext *s, Pulse *pulse) int i; put_bits(&s->pb, 1, !!pulse->num_pulse); - if(!pulse->num_pulse) return; + if (!pulse->num_pulse) return; put_bits(&s->pb, 2, pulse->num_pulse - 1); put_bits(&s->pb, 6, pulse->start); - for(i = 0; i < pulse->num_pulse; i++){ + for (i = 0; i < pulse->num_pulse; i++) { put_bits(&s->pb, 5, pulse->pos[i]); put_bits(&s->pb, 4, pulse->amp[i]); } @@ -415,14 +415,14 @@ static void encode_spectral_coeffs(AACEncContext *s, SingleChannelElement *sce) { int start, i, w, w2; - for(w = 0; w < sce->ics.num_windows; w += sce->ics.group_len[w]){ + for (w = 0; w < sce->ics.num_windows; w += sce->ics.group_len[w]) { start = 0; - for(i = 0; i < sce->ics.max_sfb; i++){ - if(sce->zeroes[w*16 + i]){ + for (i = 0; i < sce->ics.max_sfb; i++) { + if (sce->zeroes[w*16 + i]) { 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->ics.swb_sizes[i], sce->sf_idx[w*16 + i], @@ -440,7 +440,7 @@ static void encode_spectral_coeffs(AACEncContext *s, SingleChannelElement *sce) static int encode_individual_channel(AVCodecContext *avctx, AACEncContext *s, SingleChannelElement *sce, int common_window) { put_bits(&s->pb, 8, sce->sf_idx[0]); - if(!common_window) put_ics_info(s, &sce->ics); + if (!common_window) put_ics_info(s, &sce->ics); encode_band_info(s, sce); encode_scale_factors(avctx, s, sce); encode_pulses(s, &sce->pulse); @@ -460,12 +460,12 @@ static void put_bitstream_info(AVCodecContext *avctx, AACEncContext *s, const ch namelen = strlen(name) + 2; put_bits(&s->pb, 3, TYPE_FIL); put_bits(&s->pb, 4, FFMIN(namelen, 15)); - if(namelen >= 15) + if (namelen >= 15) put_bits(&s->pb, 8, namelen - 16); put_bits(&s->pb, 4, 0); //extension type - filler padbits = 8 - (put_bits_count(&s->pb) & 7); align_put_bits(&s->pb); - for(i = 0; i < namelen - 2; i++) + for (i = 0; i < namelen - 2; i++) put_bits(&s->pb, 8, name[i]); put_bits(&s->pb, 12 - padbits, 0); } @@ -480,15 +480,15 @@ static int aac_encode_frame(AVCodecContext *avctx, const uint8_t *chan_map = aac_chan_configs[avctx->channels-1]; int chan_el_counter[4]; - if(s->last_frame) + if (s->last_frame) return 0; - if(data){ - if(!s->psypp){ + if (data) { + if (!s->psypp) { memcpy(s->samples + 1024 * avctx->channels, data, 1024 * avctx->channels * sizeof(s->samples[0])); - }else{ + } else { start_ch = 0; samples2 = s->samples + 1024 * avctx->channels; - for(i = 0; i < chan_map[0]; i++){ + for (i = 0; i < chan_map[0]; i++) { tag = chan_map[i+1]; chans = tag == TYPE_CPE ? 2 : 1; ff_psy_preprocess(s->psypp, (uint16_t*)data + start_ch, samples2 + start_ch, start_ch, chans); @@ -496,26 +496,26 @@ static int aac_encode_frame(AVCodecContext *avctx, } } } - if(!avctx->frame_number){ + if (!avctx->frame_number) { memcpy(s->samples, s->samples + 1024 * avctx->channels, 1024 * avctx->channels * sizeof(s->samples[0])); return 0; } init_put_bits(&s->pb, frame, buf_size*8); - if((avctx->frame_number & 0xFF)==1 && !(avctx->flags & CODEC_FLAG_BITEXACT)){ + if ((avctx->frame_number & 0xFF)==1 && !(avctx->flags & CODEC_FLAG_BITEXACT)) { put_bitstream_info(avctx, s, LIBAVCODEC_IDENT); } start_ch = 0; memset(chan_el_counter, 0, sizeof(chan_el_counter)); - for(i = 0; i < chan_map[0]; i++){ + for (i = 0; i < chan_map[0]; i++) { FFPsyWindowInfo wi[2]; tag = chan_map[i+1]; chans = tag == TYPE_CPE ? 2 : 1; cpe = &s->cpe[i]; samples2 = samples + start_ch; la = samples2 + 1024 * avctx->channels + start_ch; - if(!data) la = NULL; - for(j = 0; j < chans; j++){ + if (!data) la = NULL; + for (j = 0; j < chans; j++) { IndividualChannelStream *ics = &cpe->ch[j].ics; int k; wi[j] = ff_psy_suggest_window(&s->psy, samples2, la, start_ch + j, ics->window_sequence[0]); @@ -526,7 +526,7 @@ static int aac_encode_frame(AVCodecContext *avctx, ics->num_windows = wi[j].num_windows; ics->swb_sizes = s->psy.bands [ics->num_windows == 8]; ics->num_swb = s->psy.num_bands[ics->num_windows == 8]; - for(k = 0; k < ics->num_windows; k++) + for (k = 0; k < ics->num_windows; k++) ics->group_len[k] = wi[j].grouping[k]; s->cur_channel = start_ch + j; @@ -534,31 +534,31 @@ static int aac_encode_frame(AVCodecContext *avctx, s->coder->search_for_quantizers(avctx, s, &cpe->ch[j], s->lambda); } cpe->common_window = 0; - if(chans > 1 + if (chans > 1 && wi[0].window_type[0] == wi[1].window_type[0] - && wi[0].window_shape == wi[1].window_shape){ + && wi[0].window_shape == wi[1].window_shape) { cpe->common_window = 1; - for(j = 0; j < wi[0].num_windows; j++){ - if(wi[0].grouping[j] != wi[1].grouping[j]){ + for (j = 0; j < wi[0].num_windows; j++) { + if (wi[0].grouping[j] != wi[1].grouping[j]) { cpe->common_window = 0; break; } } } - if(cpe->common_window && s->coder->search_for_ms) + if (cpe->common_window && s->coder->search_for_ms) s->coder->search_for_ms(s, cpe, s->lambda); adjust_frame_information(s, cpe, chans); put_bits(&s->pb, 3, tag); put_bits(&s->pb, 4, chan_el_counter[tag]++); - if(chans == 2){ + if (chans == 2) { put_bits(&s->pb, 1, cpe->common_window); - if(cpe->common_window){ + if (cpe->common_window) { put_ics_info(s, &cpe->ch[0].ics); encode_ms_info(&s->pb, cpe); } } - for(j = 0; j < chans; j++){ + for (j = 0; j < chans; j++) { s->cur_channel = start_ch + j; ff_psy_set_band_info(&s->psy, s->cur_channel, cpe->ch[j].coeffs, &wi[j]); encode_individual_channel(avctx, s, &cpe->ch[j], cpe->common_window); @@ -571,7 +571,7 @@ static int aac_encode_frame(AVCodecContext *avctx, avctx->frame_bits = put_bits_count(&s->pb); // rate control stuff - if(!(avctx->flags & CODEC_FLAG_QSCALE)){ + if (!(avctx->flags & CODEC_FLAG_QSCALE)) { float ratio = avctx->bit_rate * 1024.0f / avctx->sample_rate / avctx->frame_bits; s->lambda *= ratio; } @@ -580,7 +580,7 @@ static int aac_encode_frame(AVCodecContext *avctx, av_log(avctx, AV_LOG_ERROR, "input buffer violation %d > %d.\n", avctx->frame_bits, 6144*avctx->channels); } - if(!data) + if (!data) s->last_frame = 1; memcpy(s->samples, s->samples + 1024 * avctx->channels, 1024 * avctx->channels * sizeof(s->samples[0])); return put_bits_count(&s->pb)>>3; -- cgit v1.2.3