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| author | Michael Niedermayer <michaelni@gmx.at> | 2014-02-23 18:14:59 +0100 |
|---|---|---|
| committer | Michael Niedermayer <michaelni@gmx.at> | 2014-02-23 18:14:59 +0100 |
| commit | 42361bdf51c4495ca71a532efbb7769475c1822c (patch) | |
| tree | bc5a4968d1c37d00810656d96de254ed8bb343b3 | |
| parent | 5642dd41ccb91284f2f606c62b21acba2262fbf9 (diff) | |
| download | ffmpeg-streaming-42361bdf51c4495ca71a532efbb7769475c1822c.zip ffmpeg-streaming-42361bdf51c4495ca71a532efbb7769475c1822c.tar.gz | |
avcodec/mpegvideo: fix buffer clear code so it should work with negative linesizes
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
| -rw-r--r-- | libavcodec/mpegvideo.c | 17 |
1 files changed, 9 insertions, 8 deletions
diff --git a/libavcodec/mpegvideo.c b/libavcodec/mpegvideo.c index ebaeedd..441e7fc 100644 --- a/libavcodec/mpegvideo.c +++ b/libavcodec/mpegvideo.c @@ -1774,14 +1774,15 @@ int ff_MPV_frame_start(MpegEncContext *s, AVCodecContext *avctx) return -1; } - memset(s->last_picture_ptr->f.data[0], 0x80, - avctx->height * s->last_picture_ptr->f.linesize[0]); - memset(s->last_picture_ptr->f.data[1], 0x80, - (avctx->height >> v_chroma_shift) * - s->last_picture_ptr->f.linesize[1]); - memset(s->last_picture_ptr->f.data[2], 0x80, - (avctx->height >> v_chroma_shift) * - s->last_picture_ptr->f.linesize[2]); + for(i=0; i<avctx->height; i++) + memset(s->last_picture_ptr->f.data[0] + s->last_picture_ptr->f.linesize[0]*i, + 0x80, avctx->width); + for(i=0; i<FF_CEIL_RSHIFT(avctx->height, v_chroma_shift); i++) { + memset(s->last_picture_ptr->f.data[1] + s->last_picture_ptr->f.linesize[1]*i, + 0x80, FF_CEIL_RSHIFT(avctx->width, h_chroma_shift)); + memset(s->last_picture_ptr->f.data[2] + s->last_picture_ptr->f.linesize[2]*i, + 0x80, FF_CEIL_RSHIFT(avctx->width, h_chroma_shift)); + } if(s->codec_id == AV_CODEC_ID_FLV1 || s->codec_id == AV_CODEC_ID_H263){ for(i=0; i<avctx->height; i++) |
