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lavfi: add and use an inlink variable in avfilter_config_links()

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Simplify expressions, improve readability.
This commit is contained in:
Stefano Sabatini 2011-09-16 18:46:09 +02:00
parent 71c644ceda
commit 553c5e9f23
1 changed files with 11 additions and 10 deletions
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21
libavfilter/avfilter.c
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@ -246,6 +246,8 @@ int avfilter_config_links(AVFilterContext *filter)
for (i = 0; i < filter->input_count; i ++) {
AVFilterLink *link = filter->inputs[i];
AVFilterLink *inlink = link->src->input_count ?
link->src->inputs[0] : NULL;
if (!link) continue;
@ -275,18 +277,17 @@ int avfilter_config_links(AVFilterContext *filter)
switch (link->type) {
case AVMEDIA_TYPE_VIDEO:
if (!link->time_base.num && !link->time_base.den)
link->time_base = link->src->input_count ?
link->src->inputs[0]->time_base : AV_TIME_BASE_Q;
link->time_base = inlink ? inlink->time_base : AV_TIME_BASE_Q;
if (!link->sample_aspect_ratio.num && !link->sample_aspect_ratio.den)
link->sample_aspect_ratio = link->src->input_count ?
link->src->inputs[0]->sample_aspect_ratio : (AVRational){1,1};
link->sample_aspect_ratio = inlink ?
inlink->sample_aspect_ratio : (AVRational){1,1};
if (link->src->input_count) {
if (inlink) {
if (!link->w)
link->w = link->src->inputs[0]->w;
link->w = inlink->w;
if (!link->h)
link->h = link->src->inputs[0]->h;
link->h = inlink->h;
} else if (!link->w || !link->h) {
av_log(link->src, AV_LOG_ERROR,
"Video source filters must set their output link's "
@ -296,11 +297,11 @@ int avfilter_config_links(AVFilterContext *filter)
break;
case AVMEDIA_TYPE_AUDIO:
if (link->src->input_count) {
if (inlink) {
if (!link->sample_rate)
link->sample_rate = link->src->inputs[0]->sample_rate;
link->sample_rate = inlink->sample_rate;
if (!link->time_base.num && !link->time_base.den)
link->time_base = link->src->inputs[0]->time_base;
link->time_base = inlink->time_base;
} else if (!link->sample_rate) {
av_log(link->src, AV_LOG_ERROR,
"Audio source filters must set their output link's "