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Stefan Westerfeld
ffmpeg
Commits
5b6213ef
Commit
5b6213ef
authored
Dec 14, 2013
by
Michael Niedermayer
Committed by
Sean McGovern
Feb 12, 2018
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Plain Diff
avcodec/vc1dec: fix mby_start for interlaced content
Bug-Id: 1100 Bug-Id: ffmpeg/Ticket2531 Cc: libav-stable@libav.org
parent
9b09792c
Changes
1
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vc1dec.c
libavcodec/vc1dec.c
+2
-2
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libavcodec/vc1dec.c
View file @
5b6213ef
...
@@ -652,7 +652,7 @@ static int vc1_decode_frame(AVCodecContext *avctx, void *data,
...
@@ -652,7 +652,7 @@ static int vc1_decode_frame(AVCodecContext *avctx, void *data,
buf_size3
<<
3
);
buf_size3
<<
3
);
/* assuming that the field marker is at the exact middle,
/* assuming that the field marker is at the exact middle,
hope it's correct */
hope it's correct */
slices
[
n_slices
].
mby_start
=
s
->
mb_height
>>
1
;
slices
[
n_slices
].
mby_start
=
s
->
mb_height
+
1
>>
1
;
n_slices1
=
n_slices
-
1
;
// index of the last slice of the first field
n_slices1
=
n_slices
-
1
;
// index of the last slice of the first field
n_slices
++
;
n_slices
++
;
break
;
break
;
...
@@ -700,7 +700,7 @@ static int vc1_decode_frame(AVCodecContext *avctx, void *data,
...
@@ -700,7 +700,7 @@ static int vc1_decode_frame(AVCodecContext *avctx, void *data,
buf_size3
=
vc1_unescape_buffer
(
divider
+
4
,
buf
+
buf_size
-
divider
-
4
,
slices
[
n_slices
].
buf
);
buf_size3
=
vc1_unescape_buffer
(
divider
+
4
,
buf
+
buf_size
-
divider
-
4
,
slices
[
n_slices
].
buf
);
init_get_bits
(
&
slices
[
n_slices
].
gb
,
slices
[
n_slices
].
buf
,
init_get_bits
(
&
slices
[
n_slices
].
gb
,
slices
[
n_slices
].
buf
,
buf_size3
<<
3
);
buf_size3
<<
3
);
slices
[
n_slices
].
mby_start
=
s
->
mb_height
>>
1
;
slices
[
n_slices
].
mby_start
=
s
->
mb_height
+
1
>>
1
;
n_slices1
=
n_slices
-
1
;
n_slices1
=
n_slices
-
1
;
n_slices
++
;
n_slices
++
;
}
}
...
...
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