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Make avfilter_start_frame() invoke avfilter_get_video_buffer() on the

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link rather than avfilter_default_get_video_buffer().

This is required as the buffer requested may be greater than the
buffer allocated locally by avfilter_default_get_video_buffer(), for
example if in filterchain there is a pad filter (like in "fifo,pad").

In that case the pad filter will try to write beyond the data of the
allocated buffer, resulting in a crash.

Originally committed as revision 24895 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Stefano Sabatini 2010-08-24 08:37:54 +00:00
parent 3f1710e74f
commit 5a9dd3de63
1 changed files with 1 additions and 1 deletions
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2
libavfilter/avfilter.c
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@ -316,7 +316,7 @@ void avfilter_start_frame(AVFilterLink *link, AVFilterBufferRef *picref)
picref->perms, picref->perms,
link_dpad(link).min_perms, link_dpad(link).rej_perms); link_dpad(link).min_perms, link_dpad(link).rej_perms);
link->cur_buf = avfilter_default_get_video_buffer(link, dst->min_perms, link->w, link->h); link->cur_buf = avfilter_get_video_buffer(link, dst->min_perms, link->w, link->h);
link->src_buf = picref; link->src_buf = picref;
avfilter_copy_buffer_ref_props(link->cur_buf, link->src_buf); avfilter_copy_buffer_ref_props(link->cur_buf, link->src_buf);
} }