RepoMirrors
/
ffmpeg
mirror of https://git.ffmpeg.org/ffmpeg.git
1
0
Fork 0
Code Issues Projects Releases Wiki Activity

vf_scale: support dynamically changing input parameters. 

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
This commit is contained in:
Michael Niedermayer 2012-05-15 16:01:54 +02:00
parent 4b5ff9b63e
commit 9225513242
1 changed files with 17 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

17
libavfilter/vf_scale.c
View File

@ -275,6 +275,23 @@ static void start_frame(AVFilterLink *link, AVFilterBufferRef *picref)
AVFilterLink *outlink = link->dst->outputs[0];
AVFilterBufferRef *outpicref;
if( picref->video->w != link->w
|| picref->video->h != link->h
|| picref->format != link->format) {
AVFilterLink *out_link;
int ret;
snprintf(scale->w_expr, sizeof(scale->w_expr)-1, "%d", outlink->w);
snprintf(scale->h_expr, sizeof(scale->h_expr)-1, "%d", outlink->h);
link->dst->inputs[0]->format = picref->format;
link->dst->inputs[0]->w = picref->video->w;
link->dst->inputs[0]->h = picref->video->h;
if ((ret = config_props(outlink)) < 0)
av_assert0(0); //what to do here ?
}
if (!scale->sws) {
avfilter_start_frame(outlink, avfilter_ref_buffer(picref, ~0));
return;