6039248018
mem: fix pointer pointer aliasing violations
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This uses explicit memory copying to read and write pointer to pointers
of arbitrary object types. This works provided that the architecture
uses the same representation for all pointer types (the previous code
made that assumption already anyway).
Signed-off-by: Luca Barbato <lu_zero@gentoo.org>
2015-02-01 02:28:40 +01:00
8ddc32629a
mem: add av_strndup() for duplicating substrings
2014-08-13 17:24:18 +00:00
cce3e0a49f
Move av_fast_{m,re}alloc from lavc to lavu.
2013-11-14 09:42:22 +01:00
d433e1aefa
mem: Make av_strdup allocate using av_realloc
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This makes sure that pointers from av_strdup are reallocable,
which is used in av_dict_set if the AV_DICT_APPEND flag is set.
Nothing should rely on pointers from av_strdup being aligned.
Signed-off-by: Martin Storsjö <martin@martin.st>
2013-10-16 18:59:01 +03:00
67e285ceca
mem: Handle av_reallocp(..., 0) properly
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Previously this did a double free (and returned an error).
Reported-by: Justin Ruggles
Signed-off-by: Martin Storsjö <martin@martin.st>
2013-09-20 21:23:08 +03:00
3feb3d6ce4
mem: Introduce av_reallocp
2013-09-16 19:36:37 +02:00
c3e6e8f06c
mem: Do not check unsigned values for negative size
2013-09-05 12:38:43 +02:00
b634b36fce
mem: Improve documentation wording and spelling
2013-09-05 12:38:43 +02:00
fc962d4e7a
mem: Add av_realloc_array and av_reallocp_array
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These help avoiding overflows and simplify error handling.
Signed-off-by: Martin Storsjö <martin@martin.st>
2013-06-04 15:04:08 +03:00
f935aca44c
av_memcpy_backptr: avoid an infinite loop for back = 0
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CC:libav-stable@libav.org
2013-02-23 09:16:15 +01:00
cb45553f57
Remove pointless #undefs of previously forbidden functions.
2012-12-04 21:40:22 +01:00
4a606c830a
av_memcpy_backptr: optimise some special cases
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- Add special cases for offsets of 2, 3, or 4 bytes. This means the
offset is always >4 in the generic case, allowing 32-bit copies to
be used there.
- Don't use memcpy() for sizes less than 16 bytes.
Signed-off-by: Mans Rullgard <mans@mansr.com>
2012-11-23 12:04:17 +00:00
5bac2d0c30
avutil: Move memcpy_backptr() to mem.c
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The function is used elsewhere and does not belong with the LZO code.
2012-10-25 11:36:57 +02:00
5532cf3178
avutil/mem: K&R formatting cosmetics
2012-10-20 02:34:29 +02:00
620b1e7e98
mem: Don't abort on av_malloc(0) in debug mode
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This makes the behaviour consistent between debug and release mode.
Signed-off-by: Martin Storsjö <martin@martin.st>
2012-07-10 11:37:03 +03:00
be1a839ca6
mem: add support for _aligned_malloc() as found on Windows
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The check uses check_func_header, since this function is
conditionally available depending on the targeted MSVCRT
version.
Signed-off-by: Martin Storsjö <martin@martin.st>
2012-06-19 10:08:00 +03:00
14f063d294
mem: Consistently return NULL for av_malloc(0)
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Plain POSIX malloc(0) is allowed to return either NULL or a
non-NULL pointer. The calling code should be ready to handle
a NULL return as a correct return (instead of a failure) if the size
to allocate was 0 - this makes sure the condition is handled
in a consistent way across platforms.
This also avoids calling posix_memalign(&ptr, 32, 0) on OS X,
which returns an invalid pointer (a non-NULL pointer that causes
crashes when passed to av_free).
Abort in debug mode, to help track down issues related to
incorrect handling of this case.
Signed-off-by: Martin Storsjö <martin@martin.st>
2012-04-10 11:56:42 +03:00
7181c4edee
cosmetics: Remove extra newlines at EOF
2012-01-27 17:19:09 -08:00
13dfce3d44
Increase alignment of av_malloc() as needed by AVX ASM.
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Signed-off-by: Reinhard Tartler <siretart@tauware.de>
2011-04-26 18:18:22 +02:00
490a022d86
lavu: remove misc disabled cruft
2011-04-19 19:04:28 +02:00
2912e87a6c
Replace FFmpeg with Libav in licence headers
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Signed-off-by: Mans Rullgard <mans@mansr.com>
2011-03-19 13:33:20 +00:00
dc75d6dbf2
Avoid pointless check before calling free
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Signed-off-by: Mans Rullgard <mans@mansr.com>
2011-02-03 01:36:00 +00:00
b47541c7a3
Change the argument of memory allocation functions from unsigned int to size_t
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with the next major bump in libavutil.
Originally committed as revision 25871 to svn://svn.ffmpeg.org/ffmpeg/trunk
2010-12-04 04:00:12 +00:00
ba87f0801d
Remove explicit filename from Doxygen @file commands.
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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
2010-04-20 14:45:34 +00:00
4ae406856f
Add --malloc-prefix to apply a prefix to malloc, free etc
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This makes it easy to use a replacement allocator instead of the
system default one.
Originally committed as revision 21509 to svn://svn.ffmpeg.org/ffmpeg/trunk
2010-01-28 13:06:31 +00:00
a90de11dba
Check return value of posix_memalign and explicitly set pointer to NULL if it
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fails, patch by Patrik Kullman, patrik yes nu.
Originally committed as revision 17495 to svn://svn.ffmpeg.org/ffmpeg/trunk
2009-02-21 20:38:27 +00:00
bad5537e2c
Use full internal pathname in doxygen @file directives.
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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
2009-02-01 02:00:19 +00:00
89c9ff504b
spelling/grammar/consistency review part I
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Originally committed as revision 16840 to svn://svn.ffmpeg.org/ffmpeg/trunk
2009-01-28 00:16:05 +00:00
1e60e93355
10l: Add #undefs for system free/malloc/realloc, which must be used here.
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Originally committed as revision 16794 to svn://svn.ffmpeg.org/ffmpeg/trunk
2009-01-25 22:59:05 +00:00
77652a6aaf
C files should #include the header files of the same name.
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Originally committed as revision 16792 to svn://svn.ffmpeg.org/ffmpeg/trunk
2009-01-25 22:40:43 +00:00
692c315e3a
Do not #include common.h without necessity.
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This eliminates the need to work around common.h overriding certain system
functions which are required in this header.
Originally committed as revision 16776 to svn://svn.ffmpeg.org/ffmpeg/trunk
2009-01-25 17:36:48 +00:00
dfcb6b56f9
Directly #include a bunch of indirectly #included headers.
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Originally committed as revision 16748 to svn://svn.ffmpeg.org/ffmpeg/trunk
2009-01-24 14:55:30 +00:00
406792e7b0
cosmetics: Remove pointless period after copyright statement non-sentences.
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Originally committed as revision 16684 to svn://svn.ffmpeg.org/ffmpeg/trunk
2009-01-19 15:46:40 +00:00
b250f9c66d
Change semantic of CONFIG_*, HAVE_* and ARCH_*.
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They are now always defined to either 0 or 1.
Originally committed as revision 16590 to svn://svn.ffmpeg.org/ffmpeg/trunk
2009-01-13 23:44:16 +00:00
1f91cdce0b
Use posix_memalign() if available.
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Originally committed as revision 16488 to svn://svn.ffmpeg.org/ffmpeg/trunk
2009-01-07 23:36:34 +00:00
19757f6169
indent
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Originally committed as revision 13251 to svn://svn.ffmpeg.org/ffmpeg/trunk
2008-05-23 12:37:52 +00:00
fdf35f265a
make av_strdup(NULL) return NULL
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Originally committed as revision 13250 to svn://svn.ffmpeg.org/ffmpeg/trunk
2008-05-23 12:37:32 +00:00
ed0d3048c0
Merge declaratio and initialization.
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Originally committed as revision 12677 to svn://svn.ffmpeg.org/ffmpeg/trunk
2008-04-03 19:20:32 +00:00
11362767b8
Merge declaration and initialization.
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Originally committed as revision 12676 to svn://svn.ffmpeg.org/ffmpeg/trunk
2008-04-03 19:18:14 +00:00
2cab640129
typo fixes
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Originally committed as revision 12428 to svn://svn.ffmpeg.org/ffmpeg/trunk
2008-03-12 23:58:46 +00:00
7ce6892373
misc spelling fixes
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Originally committed as revision 12410 to svn://svn.ffmpeg.org/ffmpeg/trunk
2008-03-10 18:42:09 +00:00
90d30570d8
Avoid void*-arithmetic.
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Patch by mvplayer: ffmpeg gmail com
Originally committed as revision 11932 to svn://svn.ffmpeg.org/ffmpeg/trunk
2008-02-14 08:16:07 +00:00
d7f654692a
Move unaltered av_freep() comments to the header file.
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Originally committed as revision 8253 to svn://svn.ffmpeg.org/ffmpeg/trunk
2007-03-05 13:51:03 +00:00
f690ee715d
Move unaltered av_free() comments to the header file.
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Originally committed as revision 8252 to svn://svn.ffmpeg.org/ffmpeg/trunk
2007-03-05 13:50:03 +00:00
d6def91a3b
Move unaltered av_realloc() comments to the header file.
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Originally committed as revision 8251 to svn://svn.ffmpeg.org/ffmpeg/trunk
2007-03-05 13:46:47 +00:00
9a07029916
Move unaltered av_malloc() comments to the header file.
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Originally committed as revision 8250 to svn://svn.ffmpeg.org/ffmpeg/trunk
2007-03-05 13:45:52 +00:00
eafcac6ac8
cosmetics: Fix another common typo, dependAnt --> dependEnt.
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Originally committed as revision 8114 to svn://svn.ffmpeg.org/ffmpeg/trunk
2007-02-24 09:41:43 +00:00
9ddbcae667
rename MEMALIGN_HACK to CONFIG_MEMALIGN_HACK, use common code in configure
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Originally committed as revision 7025 to svn://svn.ffmpeg.org/ffmpeg/trunk
2006-11-14 00:35:21 +00:00
b78e7197a8
Change license headers to say 'FFmpeg' instead of 'this program/this library'
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and fix GPL/LGPL version mismatches.
Originally committed as revision 6577 to svn://svn.ffmpeg.org/ffmpeg/trunk
2006-10-07 15:30:46 +00:00
79e47000c8
move memory functions from avcodec to avutil
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Originally committed as revision 6330 to svn://svn.ffmpeg.org/ffmpeg/trunk
2006-09-25 15:23:40 +00:00
Rémi Denis-Courmont
Anton Khirnov
Martin Storsjö
Luca Barbato
Diego Biurrun
Mans Rullgard
Ronald S. Bultje
Alex Converse
Vitor Sessak
Clément Bœsch
Michael Niedermayer
Patrik Kullman
Aurelien Jacobs
Ramiro Polla
avcoder
Panagiotis Issaris