diff options
Diffstat (limited to 'libavfilter/video.c')
| -rw-r--r-- | libavfilter/video.c | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/libavfilter/video.c b/libavfilter/video.c index eb92edd8f2..b7a8b86dad 100644 --- a/libavfilter/video.c +++ b/libavfilter/video.c @@ -232,8 +232,9 @@ static void clear_link(AVFilterLink *link) int ff_start_frame(AVFilterLink *link, AVFilterBufferRef *picref) { int (*start_frame)(AVFilterLink *, AVFilterBufferRef *); + AVFilterPad *src = link->srcpad; AVFilterPad *dst = link->dstpad; - int ret, perms = picref->perms; + int ret, perms; AVFilterCommand *cmd= link->dst->command_queue; int64_t pts; @@ -242,6 +243,10 @@ int ff_start_frame(AVFilterLink *link, AVFilterBufferRef *picref) if (!(start_frame = dst->start_frame)) start_frame = default_start_frame; + av_assert1((picref->perms & src->min_perms) == src->min_perms); + picref->perms &= ~ src->rej_perms; + perms = picref->perms; + if (picref->linesize[0] < 0) perms |= AV_PERM_NEG_LINESIZES; /* prepare to copy the picture if it has insufficient permissions */ |