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avcodec/dnxhddec: Check that the frame is interlaced before using cur_field

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Fixes Ticket4227

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
(cherry picked from commit 2c660e34cf3c2b77cd2bef6f292920334dfd9192)

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
This commit is contained in:
Michael Niedermayer 2015-03-19 23:28:39 +01:00
parent 38d6ff31b7
commit 61dbd3f3d0
1 changed files with 1 additions and 1 deletions
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libavcodec/dnxhddec.c
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@ -363,7 +363,7 @@ static int dnxhd_decode_macroblock(DNXHDContext *ctx, AVFrame *frame,
dest_u = frame->data[1] + ((y * dct_linesize_chroma) << 4) + (x << (3 + shift1 + ctx->is_444));
dest_v = frame->data[2] + ((y * dct_linesize_chroma) << 4) + (x << (3 + shift1 + ctx->is_444));
if (ctx->cur_field) {
if (frame->interlaced_frame && ctx->cur_field) {
dest_y += frame->linesize[0];
dest_u += frame->linesize[1];
dest_v += frame->linesize[2];