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Make avfilter_get_video_buffer() use 

avfilter_default_get_video_buffer() if the get_video_buffer() callback
is not defined in a filter.

Libavfilter filters author have to explicitely define the
get_video_buffer() callback if they want the buffer to be requested to
the filter following in the filterchain.

See the thread:
"[FFmpeg-devel] [PATCH] Make avfilter_get_video_buffer() use
default_get_video_buffer if callback not defined".

Originally committed as revision 20444 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Stefano Sabatini 2009-11-03 22:15:52 +00:00
parent ae2abc69db
commit da23d42476
2 changed files with 2 additions and 5 deletions
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3
libavfilter/avfilter.c
View File

@ -188,9 +188,6 @@ AVFilterPicRef *avfilter_get_video_buffer(AVFilterLink *link, int perms, int w,
if(link_dpad(link).get_video_buffer)
ret = link_dpad(link).get_video_buffer(link, perms, w, h);
if(!ret && link->dst->output_count)
ret = avfilter_get_video_buffer(link->dst->outputs[0], perms, w, h);
if(!ret)
ret = avfilter_default_get_video_buffer(link, perms, w, h);

4
libavfilter/avfilter.h
View File

@ -24,7 +24,7 @@
#define LIBAVFILTER_VERSION_MAJOR 1
#define LIBAVFILTER_VERSION_MINOR 6
#define LIBAVFILTER_VERSION_MICRO 0
#define LIBAVFILTER_VERSION_MICRO 1
#define LIBAVFILTER_VERSION_INT AV_VERSION_INT(LIBAVFILTER_VERSION_MAJOR, \
LIBAVFILTER_VERSION_MINOR, \
@ -288,7 +288,7 @@ struct AVFilterPad
/**
* Callback function to get a buffer. If NULL, the filter system will
* handle buffer requests.
* use avfilter_default_get_video_buffer().
*
* Input video pads only.
*/