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optimization

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Originally committed as revision 992 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Michael Niedermayer 2002-10-02 17:07:39 +00:00
parent ce5b7c5e11
commit 3994623df2
3 changed files with 19 additions and 5 deletions
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7
libavcodec/h263dec.c
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@ -362,7 +362,12 @@ uint64_t time= rdtsc();
h = s->height - y;
if (h > 16)
h = 16;
offset = y * s->linesize;
if(s->pict_type==B_TYPE)
offset = 0;
else
offset = y * s->linesize;
if(s->pict_type==B_TYPE || (!s->has_b_frames)){
src_ptr[0] = s->current_picture[0] + offset;
src_ptr[1] = s->current_picture[1] + (offset >> 2);

5
libavcodec/mpeg12.c
View File

@ -1604,7 +1604,10 @@ static int mpeg_decode_slice(AVCodecContext *avctx,
h = s->height - y;
if (h > 16)
h = 16;
offset = y * s->linesize;
if(s->pict_type==B_TYPE)
offset = 0;
else
offset = y * s->linesize;
if(s->pict_type==B_TYPE || (!s->has_b_frames)){
src_ptr[0] = s->current_picture[0] + offset;
src_ptr[1] = s->current_picture[1] + (offset >> 2);

12
libavcodec/mpegvideo.c
View File

@ -1684,9 +1684,15 @@ void MPV_decode_mb(MpegEncContext *s, DCTELEM block[6][64])
}
}
dest_y = s->current_picture [0] + (mb_y * 16* s->linesize ) + mb_x * 16;
dest_cb = s->current_picture[1] + (mb_y * 8 * s->uvlinesize) + mb_x * 8;
dest_cr = s->current_picture[2] + (mb_y * 8 * s->uvlinesize) + mb_x * 8;
if(s->pict_type==B_TYPE && s->avctx->draw_horiz_band){
dest_y = s->current_picture [0] + mb_x * 16;
dest_cb = s->current_picture[1] + mb_x * 8;
dest_cr = s->current_picture[2] + mb_x * 8;
}else{
dest_y = s->current_picture [0] + (mb_y * 16* s->linesize ) + mb_x * 16;
dest_cb = s->current_picture[1] + (mb_y * 8 * s->uvlinesize) + mb_x * 8;
dest_cr = s->current_picture[2] + (mb_y * 8 * s->uvlinesize) + mb_x * 8;
}
if (s->interlaced_dct) {
dct_linesize = s->linesize * 2;