- 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>

The function is used elsewhere and does not belong with the LZO code.

This makes the behaviour consistent between debug and release mode.

Signed-off-by: Martin Storsjö <martin@martin.st>

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>

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>

Signed-off-by: Reinhard Tartler <siretart@tauware.de>

Signed-off-by: Mans Rullgard <mans@mansr.com>

Signed-off-by: Mans Rullgard <mans@mansr.com>

with the next major bump in libavutil.

Originally committed as revision 25871 to svn://svn.ffmpeg.org/ffmpeg/trunk

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

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

fails, patch by Patrik Kullman, patrik yes nu.

Originally committed as revision 17495 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

Originally committed as revision 16840 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 16794 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 16792 to svn://svn.ffmpeg.org/ffmpeg/trunk

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

Originally committed as revision 16748 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 16684 to svn://svn.ffmpeg.org/ffmpeg/trunk

They are now always defined to either 0 or 1.

Originally committed as revision 16590 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 16488 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 13251 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 13250 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 12677 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 12676 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 12428 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 12410 to svn://svn.ffmpeg.org/ffmpeg/trunk

Patch by mvplayer: ffmpeg gmail com

Originally committed as revision 11932 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 8253 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 8252 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 8251 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 8250 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 8114 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 7025 to svn://svn.ffmpeg.org/ffmpeg/trunk

and fix GPL/LGPL version mismatches.

Originally committed as revision 6577 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 6330 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 6008 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 5996 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 5992 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 5784 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 5633 to svn://svn.ffmpeg.org/ffmpeg/trunk

need for 1 more extra byte.

* Checking whether the to be allocated size is larger than INT_MAX,
doesn't assure that size+16 bytes for the MEMALIGN_HACK isn't larger
than INT_MAX.

* malloc might return NULL. Checking for it before using that pointer
seems like a good idea.
Patch by Herve W. H PPP O PPP W PPP aka PPP V+ffmpeg AH gmail PPP com
Original thread:
Date: Jun 29, 2006 1:21 PM
Subject: [Ffmpeg-devel] [PATCH] minor improvements to libavcodec/mem.c

Originally committed as revision 5559 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 5552 to svn://svn.ffmpeg.org/ffmpeg/trunk

patch by Dieter <freebsd at sopwith solgatos com>

Originally committed as revision 4911 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 4891 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 4842 to svn://svn.ffmpeg.org/ffmpeg/trunk