mirror of https://git.ffmpeg.org/ffmpeg.git
avcodec/h264: clear chroma planes when flags gray is used
Fixes Ticket3397 Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
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42361bdf51
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72e6913140
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@ -454,6 +454,18 @@ static int alloc_picture(H264Context *h, Picture *pic)
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pic->hwaccel_picture_private = pic->hwaccel_priv_buf->data;
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}
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}
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if (!h->avctx->hwaccel && CONFIG_GRAY && h->flags & CODEC_FLAG_GRAY && pic->f.data[2]) {
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int h_chroma_shift, v_chroma_shift;
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av_pix_fmt_get_chroma_sub_sample(pic->f.format,
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&h_chroma_shift, &v_chroma_shift);
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for(i=0; i<FF_CEIL_RSHIFT(h->avctx->height, v_chroma_shift); i++) {
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memset(pic->f.data[1] + pic->f.linesize[1]*i,
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0x80, FF_CEIL_RSHIFT(h->avctx->width, h_chroma_shift));
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memset(pic->f.data[2] + pic->f.linesize[2]*i,
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0x80, FF_CEIL_RSHIFT(h->avctx->width, h_chroma_shift));
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}
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}
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if (!h->qscale_table_pool) {
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ret = init_table_pools(h);
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