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vf_mp: do not add duplicated pixel formats.

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This avoid a crash with in avfilter_merge_formats() in case one of the
filter formats list has multiple time the same entry.

Thanks to Mina Nagy Zaki for helping figuring out the issue.
This commit is contained in:
Clément Bœsch 2011-06-22 10:33:01 +02:00 committed by Clément Bœsch
parent f4228097e4
commit c9584f0c9c
1 changed files with 6 additions and 1 deletions
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7
libavfilter/vf_mp.c
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@ -41,6 +41,7 @@
//FIXME maybe link the orig in
//XXX: identical pix_fmt must be following with each others
static const struct {
int fmt;
enum PixelFormat pix_fmt;
@ -785,13 +786,17 @@ static int query_formats(AVFilterContext *ctx)
{
AVFilterFormats *avfmts=NULL;
MPContext *m = ctx->priv;
enum PixelFormat lastpixfmt = PIX_FMT_NONE;
int i;
for(i=0; conversion_map[i].fmt; i++){
av_log(ctx, AV_LOG_DEBUG, "query: %X\n", conversion_map[i].fmt);
if(m->vf.query_format(&m->vf, conversion_map[i].fmt)){
av_log(ctx, AV_LOG_DEBUG, "supported,adding\n");
avfilter_add_format(&avfmts, conversion_map[i].pix_fmt);
if (conversion_map[i].pix_fmt != lastpixfmt) {
avfilter_add_format(&avfmts, conversion_map[i].pix_fmt);
lastpixfmt = conversion_map[i].pix_fmt;
}
}
}