*
* @param buf buffer containing frame data to be passed down the filtergraph.
* This function will take ownership of buf, the user must not free it.
+ * A NULL buf signals EOF -- i.e. no more frames will be sent to this filter.
*/
int av_buffersrc_buffer(AVFilterContext *s, AVFilterBufferRef *buf);
enum PixelFormat pix_fmt;
AVRational time_base; ///< time_base to set in the output link
AVRational pixel_aspect;
+ int eof;
} BufferSourceContext;
#define CHECK_PARAM_CHANGE(s, c, width, height, format)\
AVFilterBufferRef *buf;
int ret;
+ if (!buf) {
+ c->eof = 1;
+ return 0;
+ } else if (c->eof)
+ return AVERROR(EINVAL);
+
if (!av_fifo_space(c->fifo) &&
(ret = av_fifo_realloc2(c->fifo, av_fifo_size(c->fifo) +
sizeof(buf))) < 0)
BufferSourceContext *c = s->priv;
int ret;
+ if (!buf) {
+ c->eof = 1;
+ return 0;
+ } else if (c->eof)
+ return AVERROR(EINVAL);
+
if (!av_fifo_space(c->fifo) &&
(ret = av_fifo_realloc2(c->fifo, av_fifo_size(c->fifo) +
sizeof(buf))) < 0)
AVFilterBufferRef *buf;
if (!av_fifo_size(c->fifo)) {
+ if (c->eof)
+ return AVERROR_EOF;
av_log(link->src, AV_LOG_ERROR,
"request_frame() called with no available frame!\n");
return AVERROR(EINVAL);
static int poll_frame(AVFilterLink *link)
{
BufferSourceContext *c = link->src->priv;
- return !!av_fifo_size(c->fifo);
+ int size = av_fifo_size(c->fifo);
+ if (!size && c->eof)
+ return AVERROR_EOF;
+ return size/sizeof(AVFilterBufferRef*);
}
AVFilter avfilter_vsrc_buffer = {