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Deinterlace xsub subtitles

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Originally committed as revision 9941 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Reimar Döffinger 2007-08-05 12:11:26 +00:00
parent 3143c78716
commit 3c247b4ff7
1 changed files with 4 additions and 0 deletions
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4
libavcodec/xsubdec.c
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@ -83,6 +83,8 @@ static int decode_frame(AVCodecContext *avctx, void *data, int *data_size,
init_get_bits(&gb, buf, rlelen * 8);
bitmap = sub->rects[0].bitmap;
for (y = 0; y < h; y++) {
// interlaced: do odd lines
if (y == h / 2) bitmap = sub->rects[0].bitmap + w;
for (x = 0; x < w; ) {
int log2 = ff_log2_tab[show_bits(&gb, 8)];
int run = get_bits(&gb, 14 - 4 * (log2 >> 1));
@ -94,6 +96,8 @@ static int decode_frame(AVCodecContext *avctx, void *data, int *data_size,
bitmap += run;
x += run;
}
// interlaced, skip every second line
bitmap += w;
align_get_bits(&gb);
}
*data_size = 1;