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;
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 "
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 "