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authorAlex Converse <alex.converse@gmail.com>2009-07-08 20:36:45 +0000
committerAlex Converse <alex.converse@gmail.com>2009-07-08 20:36:45 +0000
commitfd257dc4c0ee751ecf15830b91d28c15276fe93b (patch)
treeea435dfa1fdef450eabc9fc2f422624850acff83 /libavcodec/aacenc.c
parent78e65cd7726942a1615ead039abe0bfa79341212 (diff)
Cosmetics: Pretty print the AAC encoder.
Originally committed as revision 19376 to svn://svn.ffmpeg.org/ffmpeg/trunk
Diffstat (limited to 'libavcodec/aacenc.c')
-rw-r--r--libavcodec/aacenc.c144
1 files changed, 72 insertions, 72 deletions
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;