The delta escape (2) is supposed to work the same in 4-bit RLE as in
8-bit RLE. This is documented in the MSDN Bitmap Compression page:
https://msdn.microsoft.com/en-us/library/windows/desktop/dd183383(v=vs.85).aspx
The unchecked modification of line is safe, since the loop condition
(line >= 0) will check it before any pixel data is written.
Fixes ticket #5153 (output now matches ImageMagick for the provided sample).
Signed-off-by: Daniel Verkamp <daniel@drv.nu>
Callers always use a frame and cast it to AVPicture, change
ff_msrle_decode() to accept an AVFrame directly instead.
Signed-off-by: Vittorio Giovara <vittorio.giovara@gmail.com>
This fixes segmentation faults, when pic->linesize[0] is negative.
In that case 'line * pic->linesize[0] + pixel_ptr' is treated as
unsigned and wraps around.
This reverts commit 7d78a964.
The problem was introduced in commit f7e1367f, which should obsolete
that commit.
Signed-off-by: Andreas Cadhalpun <Andreas.Cadhalpun@googlemail.com>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
Fixes out of array access
Fixes: da14e86d8462be6493eab16bc2d40f88/asan_heap-oob_204cfd2_528_cov_340150052_COMPRESS.BMP
Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
Passing an explicit filename to this command is only necessary if the
documentation in the @file block refers to a file different from the
one the block resides in.
Originally committed as revision 22921 to svn://svn.ffmpeg.org/ffmpeg/trunk
libavcodec/msrledec.c: In function ‘ff_msrle_decode’:
libavcodec/msrledec.c:139: warning: ‘pix32’ may be used uninitialized in this function
libavcodec/msrledec.c:138: warning: ‘pix16’ may be used uninitialized in this function
Originally committed as revision 17156 to svn://svn.ffmpeg.org/ffmpeg/trunk
Otherwise doxygen complains about ambiguous filenames when files exist
under the same name in different subdirectories.
Originally committed as revision 16912 to svn://svn.ffmpeg.org/ffmpeg/trunk
This is based on patches by Alex Converse and Mans Rullgard
Thread "[PATCH] Fix MSRLE type punning"
Originally committed as revision 16013 to svn://svn.ffmpeg.org/ffmpeg/trunk
Daniel Verkamp
Vittorio Giovara
Luca Barbato
Michael Niedermayer
Andreas Cadhalpun
Paul B Mahol
Anton Khirnov
Ronald Bultje
Diego Biurrun
Alex Converse
Mans Rullgard
Carl Eugen Hoyos
Kostya Shishkov
Baptiste Coudurier