int ret = av_buffersrc_add_frame_flags(buffersrc_ctx,
frame, AV_BUFFERSRC_FLAG_KEEP_REF);
int ret = av_buffersrc_add_frame_flags(buffersrc_ctx,
frame, AV_BUFFERSRC_FLAG_KEEP_REF);
if( !filter_graph || !buffersrc_ctx || !buffersink_ctx )
return decode(frame);
if( !fframe && !(fframe=av_frame_alloc()) ) {
if( !filter_graph || !buffersrc_ctx || !buffersink_ctx )
return decode(frame);
if( !fframe && !(fframe=av_frame_alloc()) ) {