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Lagarith: fix decoding of one-coloured frames by reading the per-plane
author
Reimar Döffinger
<Reimar.Doeffinger@gmx.de>
Sat, 15 Jan 2011 12:44:48 +0000
(12:44 +0000)
committer
Reimar Döffinger
<Reimar.Doeffinger@gmx.de>
Sat, 15 Jan 2011 12:44:48 +0000
(12:44 +0000)
color value instead of always taking 0 (resulting in green frames).
Fixes issue issue2531.
Originally committed as revision 26363 to svn://svn.ffmpeg.org/ffmpeg/trunk
libavcodec/lagarith.c
patch
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diff --git
a/libavcodec/lagarith.c
b/libavcodec/lagarith.c
index
95179df
..
1bf61bd
100644
(file)
--- a/
libavcodec/lagarith.c
+++ b/
libavcodec/lagarith.c
@@
-405,9
+405,13
@@
static int lag_decode_arith_plane(LagarithContext *l, uint8_t *dst,
}
}
} else if (esc_count == 0xff) {
- /* Plane is a solid run of
0 bytes
*/
+ /* Plane is a solid run of
given value
*/
for (i = 0; i < height; i++)
- memset(dst + i * stride, 0, width);
+ memset(dst + i * stride, src[1], width);
+ /* Do not apply prediction.
+ Note: memset to 0 above, setting first value to src[1]
+ and applying prediction gives the same result. */
+ return 0;
} else {
av_log(l->avctx, AV_LOG_ERROR,
"Invalid zero run escape code! (%#x)\n", esc_count);