[FFmpeg-cvslog] r18919 - trunk/libavcodec/huffyuv.c

[heydowns]

Author: heydowns
Date: Sat May 23 21:37:01 2009
New Revision: 18919

Log:
Fix passing of unaligned addresses to dsputil diff_bytes() by
changeing calls to sub_left_prediction such that 
the source frame data pointers are no longer offset to skip the initial 
elements. This keeps them properly aligned for the subsequent call to diff_bytes.
Changes encoding offset to compensate.

Mailing list thread: 
https://lists.mplayerhq.hu/pipermail/ffmpeg-devel/2009-May/069952.html

Modified:
   trunk/libavcodec/huffyuv.c

Modified: trunk/libavcodec/huffyuv.c
==============================================================================
--- trunk/libavcodec/huffyuv.c	Sat May 23 21:30:35 2009	(r18918)
+++ trunk/libavcodec/huffyuv.c	Sat May 23 21:37:01 2009	(r18919)
@@ -1257,11 +1257,11 @@ static int encode_frame(AVCodecContext *
         put_bits(&s->pb, 8, leftu= p->data[1][0]);
         put_bits(&s->pb, 8,        p->data[0][0]);
 
-        lefty= sub_left_prediction(s, s->temp[0], p->data[0]+2, width-2 , lefty);
-        leftu= sub_left_prediction(s, s->temp[1], p->data[1]+1, width2-1, leftu);
-        leftv= sub_left_prediction(s, s->temp[2], p->data[2]+1, width2-1, leftv);
+        lefty= sub_left_prediction(s, s->temp[0], p->data[0], width , 0);
+        leftu= sub_left_prediction(s, s->temp[1], p->data[1], width2, 0);
+        leftv= sub_left_prediction(s, s->temp[2], p->data[2], width2, 0);
 
-        encode_422_bitstream(s, 0, width-2);
+        encode_422_bitstream(s, 2, width-2);
 
         if(s->predictor==MEDIAN){
             int lefttopy, lefttopu, lefttopv;