[FFmpeg-soc] [soc]: r4024 - libavfilter/vf_scale.c

[vitor]

Author: vitor
Date: Sun Feb  8 19:19:31 2009
New Revision: 4024

Log:
Use correctly swscale API for slice-based scaling

Modified:
   libavfilter/vf_scale.c

Modified: libavfilter/vf_scale.c
==============================================================================
--- libavfilter/vf_scale.c	Sun Feb  8 19:10:24 2009	(r4023)
+++ libavfilter/vf_scale.c	Sun Feb  8 19:19:31 2009	(r4024)
@@ -133,8 +133,24 @@ static void draw_slice(AVFilterLink *lin
 {
     ScaleContext *scale = link->dst->priv;
     int outH;
+    int vsub, hsub;
+    uint8_t *data[4];
 
-    outH = sws_scale(scale->sws, link->cur_pic->data, link->cur_pic->linesize,
+    avcodec_get_chroma_sub_sample(link->format, &hsub, &vsub);
+
+    data[0] = link->cur_pic->data[0] + y * link->cur_pic->linesize[0];
+    data[3] = link->cur_pic->data[3] + y * link->cur_pic->linesize[3];
+
+    if (link->cur_pic->data[2]) {
+        data[1] = link->cur_pic->data[1] + (y>>vsub)*link->cur_pic->linesize[1];
+        data[2] = link->cur_pic->data[2] + (y>>vsub)*link->cur_pic->linesize[2];
+    } else {
+        // Probably a paletted format
+        data[1] = link->cur_pic->data[1];
+        data[2] = link->cur_pic->data[2];
+    }
+
+    outH = sws_scale(scale->sws, data, link->cur_pic->linesize,
               y, h, link->dst->outputs[0]->outpic->data,
               link->dst->outputs[0]->outpic->linesize);
     avfilter_draw_slice(link->dst->outputs[0], scale->sliceY, outH);