lavfi: Fill linesize, sample_rate and channel_layout fields in...

lavfi: Fill linesize, sample_rate and channel_layout fields in avfilter_fill_frame_from_audio_buffer_ref.
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

libavfilter/avcodec.c

@@ -59,10 +59,13 @@ int avfilter_fill_frame_from_audio_buffer_ref(AVFrame *frame,
         return AVERROR(EINVAL);
 
     memcpy(frame->data, samplesref->data, sizeof(frame->data));
+    memcpy(frame->linesize, samplesref->linesize, sizeof(frame->linesize));
     frame->pkt_pos        = samplesref->pos;
     frame->format         = samplesref->format;
     frame->nb_samples     = samplesref->audio->nb_samples;
     frame->pts            = samplesref->pts;
+    frame->sample_rate    = samplesref->audio->sample_rate;
+    frame->channel_layout = samplesref->audio->channel_layout;
 
     return 0;
 }