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lavfi: add error handling to start_frame().

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This commit is contained in:
Anton Khirnov 2012-07-08 17:29:42 +02:00
parent 1470ce21ce
commit ebc8d97481
26 changed files with 209 additions and 99 deletions
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7
libavfilter/video.h
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@ -39,7 +39,7 @@ AVFilterBufferRef *ff_null_get_video_buffer(AVFilterLink *link, int perms, int w
AVFilterBufferRef *ff_get_video_buffer(AVFilterLink *link, int perms,
int w, int h);
void ff_null_start_frame(AVFilterLink *link, AVFilterBufferRef *picref);
int ff_null_start_frame(AVFilterLink *link, AVFilterBufferRef *picref);
void ff_null_draw_slice(AVFilterLink *link, int y, int h, int slice_dir);
void ff_null_end_frame(AVFilterLink *link);
@ -51,8 +51,11 @@ void ff_null_end_frame(AVFilterLink *link);
* frame need only be valid once draw_slice() is called for that
* portion. The receiving filter will free this reference when
* it no longer needs it.
*
* @return >= 0 on success, a negative AVERROR on error. This function will
* unreference picref in case of error.
*/
void ff_start_frame(AVFilterLink *link, AVFilterBufferRef *picref);
int ff_start_frame(AVFilterLink *link, AVFilterBufferRef *picref);
/**
* Notify the next filter that the current frame has finished.