* a filter enforcing given constant framerate
*/
+#include "libavutil/common.h"
#include "libavutil/fifo.h"
#include "libavutil/mathematics.h"
#include "libavutil/opt.h"
/* discard frames until we get the first timestamp */
if (s->pts == AV_NOPTS_VALUE) {
if (buf->pts != AV_NOPTS_VALUE) {
- write_to_fifo(s->fifo, buf);
+ ret = write_to_fifo(s->fifo, buf);
+ if (ret < 0)
+ return ret;
+
s->first_pts = s->pts = buf->pts;
} else {
av_log(ctx, AV_LOG_WARNING, "Discarding initial frame(s) with no "
/* duplicate the frame if needed */
if (!av_fifo_size(s->fifo) && i < delta - 1) {
+ AVFilterBufferRef *dup = avfilter_ref_buffer(buf_out, AV_PERM_READ);
+
av_log(ctx, AV_LOG_DEBUG, "Duplicating frame.\n");
- write_to_fifo(s->fifo, avfilter_ref_buffer(buf_out, AV_PERM_READ));
+ if (dup)
+ ret = write_to_fifo(s->fifo, dup);
+ else
+ ret = AVERROR(ENOMEM);
+
+ if (ret < 0) {
+ avfilter_unref_bufferp(&buf_out);
+ avfilter_unref_bufferp(&buf);
+ return ret;
+ }
+
s->dup++;
}