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vsrc_buffer: count the number of failed requests.

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This commit is contained in:
Nicolas George 2012-04-19 16:31:20 +02:00
parent f75ee4031e
commit 2d6522bab0
2 changed files with 18 additions and 0 deletions
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9
libavfilter/vsrc_buffer.c
View File

@ -40,6 +40,7 @@ typedef struct {
AVRational sample_aspect_ratio; AVRational sample_aspect_ratio;
char sws_param[256]; char sws_param[256];
int eof; int eof;
unsigned nb_failed_requests;
} BufferSourceContext; } BufferSourceContext;
#define CHECK_PARAM_CHANGE(s, c, width, height, format)\ #define CHECK_PARAM_CHANGE(s, c, width, height, format)\
@ -123,6 +124,7 @@ int av_vsrc_buffer_add_video_buffer_ref(AVFilterContext *buffer_filter,
avfilter_unref_buffer(buf); avfilter_unref_buffer(buf);
return ret; return ret;
} }
c->nb_failed_requests = 0;
return 0; return 0;
} }
@ -147,6 +149,7 @@ int av_buffersrc_buffer(AVFilterContext *s, AVFilterBufferRef *buf)
if ((ret = av_fifo_generic_write(c->fifo, &buf, sizeof(buf), NULL)) < 0) if ((ret = av_fifo_generic_write(c->fifo, &buf, sizeof(buf), NULL)) < 0)
return ret; return ret;
c->nb_failed_requests = 0;
return 0; return 0;
} }
@ -178,6 +181,11 @@ int av_vsrc_buffer_add_frame(AVFilterContext *buffer_src,
} }
#endif #endif
unsigned av_vsrc_buffer_get_nb_failed_requests(AVFilterContext *buffer_src)
{
return ((BufferSourceContext *)buffer_src->priv)->nb_failed_requests;
}
static av_cold int init(AVFilterContext *ctx, const char *args, void *opaque) static av_cold int init(AVFilterContext *ctx, const char *args, void *opaque)
{ {
BufferSourceContext *c = ctx->priv; BufferSourceContext *c = ctx->priv;
@ -249,6 +257,7 @@ static int request_frame(AVFilterLink *link)
if (!av_fifo_size(c->fifo)) { if (!av_fifo_size(c->fifo)) {
if (c->eof) if (c->eof)
return AVERROR_EOF; return AVERROR_EOF;
c->nb_failed_requests++;
return AVERROR(EAGAIN); return AVERROR(EAGAIN);
} }
av_fifo_generic_read(c->fifo, &buf, sizeof(buf), NULL); av_fifo_generic_read(c->fifo, &buf, sizeof(buf), NULL);

9
libavfilter/vsrc_buffer.h
View File

@ -46,4 +46,13 @@
int av_vsrc_buffer_add_video_buffer_ref(AVFilterContext *buffer_src, int av_vsrc_buffer_add_video_buffer_ref(AVFilterContext *buffer_src,
AVFilterBufferRef *picref, int flags); AVFilterBufferRef *picref, int flags);
/**
* Get the number of failed requests.
*
* A failed request is when the request_frame method is called while no
* frame is present in the buffer.
* The number is reset when a frame is added.
*/
unsigned av_vsrc_buffer_get_nb_failed_requests(AVFilterContext *buffer_src);
#endif /* AVFILTER_VSRC_BUFFER_H */ #endif /* AVFILTER_VSRC_BUFFER_H */