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avcodec_find_best_pix_fmt_of_2: fix handling or PIX_FMT_NONE

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Fixes CID733775
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
This commit is contained in:
Michael Niedermayer 2012-10-13 23:41:10 +02:00
parent b3eb4f54c0
commit 8cda27b753
1 changed files with 1 additions and 1 deletions
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2
libavcodec/imgconvert.c
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@ -564,7 +564,7 @@ enum AVPixelFormat avcodec_find_best_pix_fmt_of_2(enum AVPixelFormat dst_pix_fmt
loss_order1 = loss1 & loss_mask_order[i];
loss_order2 = loss2 & loss_mask_order[i];
if (loss_order1 == 0 && loss_order2 == 0){ /* use format with smallest depth */
if (loss_order1 == 0 && loss_order2 == 0 && dst_pix_fmt2 != AV_PIX_FMT_NONE && dst_pix_fmt1 != AV_PIX_FMT_NONE){ /* use format with smallest depth */
dst_pix_fmt = avg_bits_per_pixel(dst_pix_fmt2) < avg_bits_per_pixel(dst_pix_fmt1) ? dst_pix_fmt2 : dst_pix_fmt1;
} else if (loss_order1 == 0 || loss_order2 == 0) { /* use format with no loss */
dst_pix_fmt = loss_order2 ? dst_pix_fmt1 : dst_pix_fmt2;