libavfilter: pass QP table through the filter chain

Any volunteers to port the pp and spp filters from libmpcodec?

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

1 files changed, 10 insertions, 0 deletions

diff --git a/libavfilter/avcodec.c b/libavfilter/avcodec.c
index f452303bb4..95e30b3d16 100644
--- a/libavfilter/avcodec.c
+++ b/libavfilter/avcodec.c
@@ -42,6 +42,16 @@ int avfilter_copy_frame_props(AVFilterBufferRef *dst, const AVFrame *src)
         dst->video->top_field_first     = src->top_field_first;
         dst->video->key_frame           = src->key_frame;
         dst->video->pict_type           = src->pict_type;
+        av_freep(&dst->video->qp_table);
+        dst->video->qp_table_linesize = 0;
+        if (src->qscale_table) {
+            int qsize = src->qstride ? src->qstride * ((src->height+15)/16) : (src->width+15)/16;
+            dst->video->qp_table        = av_malloc(qsize);
+            if(!dst->video->qp_table)
+                return AVERROR(ENOMEM);
+            dst->video->qp_table_linesize       = src->qstride;
+            memcpy(dst->video->qp_table, src->qscale_table, qsize);
+        }
         break;
     case AVMEDIA_TYPE_AUDIO:
         dst->audio->sample_rate         = src->sample_rate;