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avconv: rename 'codec' to 'enc_ctx' 

This more clearly describes what is the variable used for.

Also, move its declaration into the block where it is actually used.
This commit is contained in:
Anton Khirnov 2014-04-04 19:59:48 +02:00
parent 650a5206a9
commit 65ed9e7585
1 changed files with 61 additions and 61 deletions
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122
avconv.c
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@ -1643,7 +1643,6 @@ static int transcode_init(void)
{
int ret = 0, i, j, k;
AVFormatContext *oc;
AVCodecContext *codec;
OutputStream *ost;
InputStream *ist;
char error[1024];
@ -1674,6 +1673,7 @@ static int transcode_init(void)
/* for each output stream, we compute the right encoding parameters */
for (i = 0; i < nb_output_streams; i++) {
AVCodecContext *enc_ctx;
AVCodecContext *dec_ctx = NULL;
ost = output_streams[i];
oc = output_files[ost->file_index]->ctx;
@ -1682,14 +1682,14 @@ static int transcode_init(void)
if (ost->attachment_filename)
continue;
codec = ost->st->codec;
enc_ctx = ost->st->codec;
if (ist) {
dec_ctx = ist->st->codec;
ost->st->disposition = ist->st->disposition;
codec->bits_per_raw_sample = dec_ctx->bits_per_raw_sample;
codec->chroma_sample_location = dec_ctx->chroma_sample_location;
enc_ctx->bits_per_raw_sample = dec_ctx->bits_per_raw_sample;
enc_ctx->chroma_sample_location = dec_ctx->chroma_sample_location;
}
if (ost->stream_copy) {
@ -1705,65 +1705,65 @@ static int transcode_init(void)
}
/* if stream_copy is selected, no need to decode or encode */
codec->codec_id = dec_ctx->codec_id;
codec->codec_type = dec_ctx->codec_type;
enc_ctx->codec_id = dec_ctx->codec_id;
enc_ctx->codec_type = dec_ctx->codec_type;
if (!codec->codec_tag) {
if (!enc_ctx->codec_tag) {
if (!oc->oformat->codec_tag ||
av_codec_get_id (oc->oformat->codec_tag, dec_ctx->codec_tag) == codec->codec_id ||
av_codec_get_id (oc->oformat->codec_tag, dec_ctx->codec_tag) == enc_ctx->codec_id ||
av_codec_get_tag(oc->oformat->codec_tag, dec_ctx->codec_id) <= 0)
codec->codec_tag = dec_ctx->codec_tag;
enc_ctx->codec_tag = dec_ctx->codec_tag;
}
codec->bit_rate = dec_ctx->bit_rate;
codec->rc_max_rate = dec_ctx->rc_max_rate;
codec->rc_buffer_size = dec_ctx->rc_buffer_size;
codec->field_order = dec_ctx->field_order;
codec->extradata = av_mallocz(extra_size);
if (!codec->extradata) {
enc_ctx->bit_rate = dec_ctx->bit_rate;
enc_ctx->rc_max_rate = dec_ctx->rc_max_rate;
enc_ctx->rc_buffer_size = dec_ctx->rc_buffer_size;
enc_ctx->field_order = dec_ctx->field_order;
enc_ctx->extradata = av_mallocz(extra_size);
if (!enc_ctx->extradata) {
return AVERROR(ENOMEM);
}
memcpy(codec->extradata, dec_ctx->extradata, dec_ctx->extradata_size);
codec->extradata_size = dec_ctx->extradata_size;
memcpy(enc_ctx->extradata, dec_ctx->extradata, dec_ctx->extradata_size);
enc_ctx->extradata_size = dec_ctx->extradata_size;
if (!copy_tb) {
codec->time_base = dec_ctx->time_base;
codec->time_base.num *= dec_ctx->ticks_per_frame;
av_reduce(&codec->time_base.num, &codec->time_base.den,
codec->time_base.num, codec->time_base.den, INT_MAX);
enc_ctx->time_base = dec_ctx->time_base;
enc_ctx->time_base.num *= dec_ctx->ticks_per_frame;
av_reduce(&enc_ctx->time_base.num, &enc_ctx->time_base.den,
enc_ctx->time_base.num, enc_ctx->time_base.den, INT_MAX);
} else
codec->time_base = ist->st->time_base;
enc_ctx->time_base = ist->st->time_base;
ost->parser = av_parser_init(codec->codec_id);
ost->parser = av_parser_init(enc_ctx->codec_id);
switch (codec->codec_type) {
switch (enc_ctx->codec_type) {
case AVMEDIA_TYPE_AUDIO:
if (audio_volume != 256) {
av_log(NULL, AV_LOG_FATAL, "-acodec copy and -vol are incompatible (frames are not decoded)\n");
exit_program(1);
}
codec->channel_layout = dec_ctx->channel_layout;
codec->sample_rate = dec_ctx->sample_rate;
codec->channels = dec_ctx->channels;
codec->frame_size = dec_ctx->frame_size;
codec->audio_service_type = dec_ctx->audio_service_type;
codec->block_align = dec_ctx->block_align;
enc_ctx->channel_layout = dec_ctx->channel_layout;
enc_ctx->sample_rate = dec_ctx->sample_rate;
enc_ctx->channels = dec_ctx->channels;
enc_ctx->frame_size = dec_ctx->frame_size;
enc_ctx->audio_service_type = dec_ctx->audio_service_type;
enc_ctx->block_align = dec_ctx->block_align;
break;
case AVMEDIA_TYPE_VIDEO:
codec->pix_fmt = dec_ctx->pix_fmt;
codec->width = dec_ctx->width;
codec->height = dec_ctx->height;
codec->has_b_frames = dec_ctx->has_b_frames;
enc_ctx->pix_fmt = dec_ctx->pix_fmt;
enc_ctx->width = dec_ctx->width;
enc_ctx->height = dec_ctx->height;
enc_ctx->has_b_frames = dec_ctx->has_b_frames;
if (ost->frame_aspect_ratio)
sar = av_d2q(ost->frame_aspect_ratio * codec->height / codec->width, 255);
sar = av_d2q(ost->frame_aspect_ratio * enc_ctx->height / enc_ctx->width, 255);
else if (ist->st->sample_aspect_ratio.num)
sar = ist->st->sample_aspect_ratio;
else
sar = dec_ctx->sample_aspect_ratio;
ost->st->sample_aspect_ratio = codec->sample_aspect_ratio = sar;
ost->st->sample_aspect_ratio = enc_ctx->sample_aspect_ratio = sar;
break;
case AVMEDIA_TYPE_SUBTITLE:
codec->width = dec_ctx->width;
codec->height = dec_ctx->height;
enc_ctx->width = dec_ctx->width;
enc_ctx->height = dec_ctx->height;
break;
case AVMEDIA_TYPE_DATA:
case AVMEDIA_TYPE_ATTACHMENT:
@ -1796,7 +1796,7 @@ static int transcode_init(void)
*
* in such a case, set ost->frame_rate
*/
if (codec->codec_type == AVMEDIA_TYPE_VIDEO &&
if (enc_ctx->codec_type == AVMEDIA_TYPE_VIDEO &&
!ost->frame_rate.num && ist &&
(video_sync_method == VSYNC_CFR ||
(video_sync_method == VSYNC_AUTO &&
@ -1822,8 +1822,8 @@ static int transcode_init(void)
}
if (!ost->filter &&
(codec->codec_type == AVMEDIA_TYPE_VIDEO ||
codec->codec_type == AVMEDIA_TYPE_AUDIO)) {
(enc_ctx->codec_type == AVMEDIA_TYPE_VIDEO ||
enc_ctx->codec_type == AVMEDIA_TYPE_AUDIO)) {
FilterGraph *fg;
fg = init_simple_filtergraph(ist, ost);
if (configure_filtergraph(fg)) {
@ -1832,30 +1832,30 @@ static int transcode_init(void)
}
}
switch (codec->codec_type) {
switch (enc_ctx->codec_type) {
case AVMEDIA_TYPE_AUDIO:
codec->sample_fmt = ost->filter->filter->inputs[0]->format;
codec->sample_rate = ost->filter->filter->inputs[0]->sample_rate;
codec->channel_layout = ost->filter->filter->inputs[0]->channel_layout;
codec->channels = av_get_channel_layout_nb_channels(codec->channel_layout);
codec->time_base = (AVRational){ 1, codec->sample_rate };
enc_ctx->sample_fmt = ost->filter->filter->inputs[0]->format;
enc_ctx->sample_rate = ost->filter->filter->inputs[0]->sample_rate;
enc_ctx->channel_layout = ost->filter->filter->inputs[0]->channel_layout;
enc_ctx->channels = av_get_channel_layout_nb_channels(enc_ctx->channel_layout);
enc_ctx->time_base = (AVRational){ 1, enc_ctx->sample_rate };
break;
case AVMEDIA_TYPE_VIDEO:
codec->time_base = ost->filter->filter->inputs[0]->time_base;
enc_ctx->time_base = ost->filter->filter->inputs[0]->time_base;
codec->width = ost->filter->filter->inputs[0]->w;
codec->height = ost->filter->filter->inputs[0]->h;
codec->sample_aspect_ratio = ost->st->sample_aspect_ratio =
enc_ctx->width = ost->filter->filter->inputs[0]->w;
enc_ctx->height = ost->filter->filter->inputs[0]->h;
enc_ctx->sample_aspect_ratio = ost->st->sample_aspect_ratio =
ost->frame_aspect_ratio ? // overridden by the -aspect cli option
av_d2q(ost->frame_aspect_ratio * codec->height/codec->width, 255) :
av_d2q(ost->frame_aspect_ratio * enc_ctx->height/enc_ctx->width, 255) :
ost->filter->filter->inputs[0]->sample_aspect_ratio;
codec->pix_fmt = ost->filter->filter->inputs[0]->format;
enc_ctx->pix_fmt = ost->filter->filter->inputs[0]->format;
if (dec_ctx &&
(codec->width != dec_ctx->width ||
codec->height != dec_ctx->height ||
codec->pix_fmt != dec_ctx->pix_fmt)) {
codec->bits_per_raw_sample = 0;
(enc_ctx->width != dec_ctx->width ||
enc_ctx->height != dec_ctx->height ||
enc_ctx->pix_fmt != dec_ctx->pix_fmt)) {
enc_ctx->bits_per_raw_sample = 0;
}
if (ost->forced_keyframes)
@ -1863,14 +1863,14 @@ static int transcode_init(void)
ost->st->codec);
break;
case AVMEDIA_TYPE_SUBTITLE:
codec->time_base = (AVRational){1, 1000};
enc_ctx->time_base = (AVRational){1, 1000};
break;
default:
abort();
break;
}
/* two pass mode */
if ((codec->flags & (CODEC_FLAG_PASS1 | CODEC_FLAG_PASS2))) {
if ((enc_ctx->flags & (CODEC_FLAG_PASS1 | CODEC_FLAG_PASS2))) {
char logfilename[1024];
FILE *f;
@ -1881,7 +1881,7 @@ static int transcode_init(void)
if (!strcmp(ost->enc->name, "libx264")) {
av_dict_set(&ost->opts, "stats", logfilename, AV_DICT_DONT_OVERWRITE);
} else {
if (codec->flags & CODEC_FLAG_PASS1) {
if (enc_ctx->flags & CODEC_FLAG_PASS1) {
f = fopen(logfilename, "wb");
if (!f) {
av_log(NULL, AV_LOG_FATAL, "Cannot write log file '%s' for pass-1 encoding: %s\n",
@ -1897,7 +1897,7 @@ static int transcode_init(void)
logfilename);
exit_program(1);
}
codec->stats_in = logbuffer;
enc_ctx->stats_in = logbuffer;
}
}
}