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buffersink: add AV_BUFFERSINK_FLAG_NO_REQUEST.

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This commit is contained in:
Nicolas George 2012-04-19 17:08:27 +02:00
parent 2d6522bab0
commit e11110dee4
3 changed files with 11 additions and 2 deletions
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7
libavfilter/buffersink.h
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@ -63,6 +63,13 @@ AVABufferSinkParams *av_abuffersink_params_alloc(void);
*/
#define AV_BUFFERSINK_FLAG_PEEK 1
/**
* Tell av_buffersink_get_buffer_ref() not to request a frame fom its input.
* If a frame is already buffered, it is read (and removed from the buffer),
* but if no frame is present, return AVERROR(EAGAIN).
*/
#define AV_BUFFERSINK_FLAG_NO_REQUEST 2
/**
* Get an audio/video buffer data from buffer_sink and put it in bufref.
*

2
libavfilter/sink_buffer.c
View File

@ -126,6 +126,8 @@ int av_buffersink_get_buffer_ref(AVFilterContext *ctx,
/* no picref available, fetch it from the filterchain */
if (!av_fifo_size(buf->fifo)) {
if (flags & AV_BUFFERSINK_FLAG_NO_REQUEST)
return AVERROR(EAGAIN);
if ((ret = avfilter_request_frame(inlink)) < 0)
return ret;
}

4
libavfilter/version.h
View File

@ -29,8 +29,8 @@
#include "libavutil/avutil.h"
#define LIBAVFILTER_VERSION_MAJOR 2
#define LIBAVFILTER_VERSION_MINOR 71
#define LIBAVFILTER_VERSION_MICRO 102
#define LIBAVFILTER_VERSION_MINOR 72
#define LIBAVFILTER_VERSION_MICRO 100
#define LIBAVFILTER_VERSION_INT AV_VERSION_INT(LIBAVFILTER_VERSION_MAJOR, \
LIBAVFILTER_VERSION_MINOR, \