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46 Commits

Author SHA1 Message Date
Martin Storsjö
fc962d4e7a mem: Add av_realloc_array and av_reallocp_array 
These help avoiding overflows and simplify error handling.

Signed-off-by: Martin Storsjö <martin@martin.st>
 2013-06-04 15:04:08 +03:00
Anton Khirnov
f935aca44c av_memcpy_backptr: avoid an infinite loop for back = 0 
CC:libav-stable@libav.org
 2013-02-23 09:16:15 +01:00
Anton Khirnov
cb45553f57 Remove pointless #undefs of previously forbidden functions. 2012-12-04 21:40:22 +01:00
Mans Rullgard
4a606c830a av_memcpy_backptr: optimise some special cases 
- 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
Diego Biurrun
5bac2d0c30 avutil: Move memcpy_backptr() to mem.c 
The function is used elsewhere and does not belong with the LZO code.
 2012-10-25 11:36:57 +02:00
Diego Biurrun
5532cf3178 avutil/mem: K&R formatting cosmetics 2012-10-20 02:34:29 +02:00
Martin Storsjö
620b1e7e98 mem: Don't abort on av_malloc(0) in debug mode 
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
Ronald S. Bultje
be1a839ca6 mem: add support for _aligned_malloc() as found on Windows 
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
Martin Storsjö
14f063d294 mem: Consistently return NULL for av_malloc(0) 
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
Alex Converse
7181c4edee cosmetics: Remove extra newlines at EOF 2012-01-27 17:19:09 -08:00
Vitor Sessak
13dfce3d44 Increase alignment of av_malloc() as needed by AVX ASM. 
Signed-off-by: Reinhard Tartler <siretart@tauware.de>
 2011-04-26 18:18:22 +02:00
Anton Khirnov
490a022d86 lavu: remove misc disabled cruft 2011-04-19 19:04:28 +02:00
Mans Rullgard
2912e87a6c Replace FFmpeg with Libav in licence headers 
Signed-off-by: Mans Rullgard <mans@mansr.com>
 2011-03-19 13:33:20 +00:00
Clément Bœsch
dc75d6dbf2 Avoid pointless check before calling free 
Signed-off-by: Mans Rullgard <mans@mansr.com>
 2011-02-03 01:36:00 +00:00
Michael Niedermayer
b47541c7a3 Change the argument of memory allocation functions from unsigned int to size_t 
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
Diego Biurrun
ba87f0801d Remove explicit filename from Doxygen @file commands. 
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
Måns Rullgård
4ae406856f Add --malloc-prefix to apply a prefix to malloc, free etc 
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
Patrik Kullman
a90de11dba Check return value of posix_memalign and explicitly set pointer to NULL if it 
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
Diego Biurrun
bad5537e2c Use full internal pathname in doxygen @file directives. 
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
Diego Biurrun
89c9ff504b spelling/grammar/consistency review part I 
Originally committed as revision 16840 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2009-01-28 00:16:05 +00:00
Diego Biurrun
1e60e93355 10l: Add #undefs for system free/malloc/realloc, which must be used here. 
Originally committed as revision 16794 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2009-01-25 22:59:05 +00:00
Diego Biurrun
77652a6aaf C files should #include the header files of the same name. 
Originally committed as revision 16792 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2009-01-25 22:40:43 +00:00
Diego Biurrun
692c315e3a Do not #include common.h without necessity. 
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
Diego Biurrun
dfcb6b56f9 Directly #include a bunch of indirectly #included headers. 
Originally committed as revision 16748 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2009-01-24 14:55:30 +00:00
Diego Biurrun
406792e7b0 cosmetics: Remove pointless period after copyright statement non-sentences. 
Originally committed as revision 16684 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2009-01-19 15:46:40 +00:00
Aurelien Jacobs
b250f9c66d Change semantic of CONFIG_*, HAVE_* and ARCH_*. 
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
Ramiro Polla
1f91cdce0b Use posix_memalign() if available. 
Originally committed as revision 16488 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2009-01-07 23:36:34 +00:00
Michael Niedermayer
19757f6169 indent 
Originally committed as revision 13251 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2008-05-23 12:37:52 +00:00
Michael Niedermayer
fdf35f265a make av_strdup(NULL) return NULL 
Originally committed as revision 13250 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2008-05-23 12:37:32 +00:00
Michael Niedermayer
ed0d3048c0 Merge declaratio and initialization. 
Originally committed as revision 12677 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2008-04-03 19:20:32 +00:00
Michael Niedermayer
11362767b8 Merge declaration and initialization. 
Originally committed as revision 12676 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2008-04-03 19:18:14 +00:00
Diego Biurrun
2cab640129 typo fixes 
Originally committed as revision 12428 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2008-03-12 23:58:46 +00:00
Diego Biurrun
7ce6892373 misc spelling fixes 
Originally committed as revision 12410 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2008-03-10 18:42:09 +00:00
avcoder
90d30570d8 Avoid void*-arithmetic. 
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
Panagiotis Issaris
d7f654692a Move unaltered av_freep() comments to the header file. 
Originally committed as revision 8253 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2007-03-05 13:51:03 +00:00
Panagiotis Issaris
f690ee715d Move unaltered av_free() comments to the header file. 
Originally committed as revision 8252 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2007-03-05 13:50:03 +00:00
Panagiotis Issaris
d6def91a3b Move unaltered av_realloc() comments to the header file. 
Originally committed as revision 8251 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2007-03-05 13:46:47 +00:00
Panagiotis Issaris
9a07029916 Move unaltered av_malloc() comments to the header file. 
Originally committed as revision 8250 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2007-03-05 13:45:52 +00:00
Diego Biurrun
eafcac6ac8 cosmetics: Fix another common typo, dependAnt --> dependEnt. 
Originally committed as revision 8114 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2007-02-24 09:41:43 +00:00
Måns Rullgård
9ddbcae667 rename MEMALIGN_HACK to CONFIG_MEMALIGN_HACK, use common code in configure 
Originally committed as revision 7025 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2006-11-14 00:35:21 +00:00
Diego Biurrun
b78e7197a8 Change license headers to say 'FFmpeg' instead of 'this program/this library' 
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
Luca Barbato
79e47000c8 move memory functions from avcodec to avutil 
Originally committed as revision 6330 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2006-09-25 15:23:40 +00:00
Michael Niedermayer
0a7c36af54 revert aligned realloc() changesm this should be identical to r5784 
Originally committed as revision 6008 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2006-08-17 08:18:48 +00:00
Michael Niedermayer
732692d94c trying to fix av_realloc() 
Originally committed as revision 5996 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2006-08-13 21:09:00 +00:00
Michael Niedermayer
75c413ae77 align av_realloc() 
Originally committed as revision 5992 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2006-08-13 00:47:16 +00:00
Luca Abeni
cea8f6f323 Move av_malloc(), av_realloc(), and av_free() from libavcodec to libavutil 
Originally committed as revision 5784 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2006-07-19 07:28:58 +00:00