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Code Issues Releases Activity

Fix passing of unaligned addresses to dsputil diff_bytes() by

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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

Originally committed as revision 18919 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Jeff Downs 2009-05-23 19:37:01 +00:00
parent aa5cfdfb4f
commit fdb699de62
1 changed files with 4 additions and 4 deletions
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8
libavcodec/huffyuv.c
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@ -1257,11 +1257,11 @@ static int encode_frame(AVCodecContext *avctx, unsigned char *buf, int buf_size,
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;