diff options
| -rw-r--r-- | libavcodec/xsubdec.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/libavcodec/xsubdec.c b/libavcodec/xsubdec.c index 134eb9ab03..9a90bf4fdf 100644 --- a/libavcodec/xsubdec.c +++ b/libavcodec/xsubdec.c @@ -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; |