FFmpeg

Commit Graph

Author	SHA1	Message	Date
Michael Niedermayer	d6ff68ad85	Factor duplicated ff_fast_malloc() out into mem_internal.h internal.h is difficult to use due to circular dependancies mem.h is a public header ff_* is not public Alternative solutions probably are possible too Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>	9 years ago
Michael Niedermayer	b3415e4c5f	avutil/mem: Fix potential overflow in overallocation code Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>	9 years ago
Michael Niedermayer	4950bd4ebe	libavutil/mem: use size_t for the length in av_strdup() the string length is not constrained to INT_MAX Signed-off-by: Michael Niedermayer <michaelni@gmx.at>	10 years ago
Michael Niedermayer	63186ac5f1	avutil/mem: replace remaining void /* casts by memcpy() This is similar to `6039248018` Signed-off-by: Michael Niedermayer <michaelni@gmx.at>	10 years ago
Rémi Denis-Courmont	6039248018	mem: fix pointer pointer aliasing violations 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>	10 years ago
Anton Khirnov	8ddc32629a	mem: add av_strndup() for duplicating substrings	10 years ago
Lukasz Marek	cd50a44beb	lavu/mem: add av_dynarray_add_nofree function av_dynarray_add_nofree function have similar functionality as existing av_dynarray_add, but it doesn't deallocate memory on fails. Signed-off-by: Lukasz Marek <lukasz.m.luki@gmail.com>	11 years ago
Michael Niedermayer	9ba1190297	avutil/mem: avoid using intptr_t to access void* in av_dynarray_add() Signed-off-by: Michael Niedermayer <michaelni@gmx.at>	11 years ago
Nicolas George	b0dcf76530	lavu/mem: reimplement the dynarray functions with the macro. Signed-off-by: Nicolas George <george@nsup.org> Signed-off-by: Michael Niedermayer <michaelni@gmx.at>	11 years ago
Anton Khirnov	cce3e0a49f	Move av_fast_{m,re}alloc from lavc to lavu.	11 years ago
Martin Storsjö	d433e1aefa	mem: Make av_strdup allocate using av_realloc 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>	11 years ago
Martin Storsjö	67e285ceca	mem: Handle av_reallocp(..., 0) properly Previously this did a double free (and returned an error). Reported-by: Justin Ruggles Signed-off-by: Martin Storsjö <martin@martin.st>	11 years ago
Luca Barbato	3feb3d6ce4	mem: Introduce av_reallocp	11 years ago
Diego Biurrun	c3e6e8f06c	mem: Do not check unsigned values for negative size	11 years ago
Diego Biurrun	b634b36fce	mem: Improve documentation wording and spelling	11 years ago
Michael Niedermayer	c94f9e8542	avutil/mem: Fix flipped condition Fixes return code and later null pointer dereference Found-by: Laurent Butti <laurentb@gmail.com> Signed-off-by: Michael Niedermayer <michaelni@gmx.at>	11 years ago
Michael Niedermayer	fbc472da29	avutil/mem: simplify av_reallocp_array() by using av_realloc_f() Signed-off-by: Michael Niedermayer <michaelni@gmx.at>	12 years ago
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>	12 years ago
Stefano Sabatini	e3984166a4	lavu/mem: add av_dynarray2_add() Based on a patch by Clément Bœsch. See thread: From: Clément Bœsch <ubitux@gmail.com> Subject: [FFmpeg-devel] [PATCH 1/5] lavu: add av_dynarray_alloc_elem(). Date: Sun, 14 Apr 2013 03:07:54 +0200	12 years ago
Stefano Sabatini	84be806982	lavu: define FF_MEMORY_POISON and use it Allow single-place definition of constant used to fill poisoned memory.	12 years ago
Stefano Sabatini	ee9794ed20	lavu/mem: fix potential int overflow and crash in av_dynarray_add() Also extend documentation accordingly.	12 years ago
Michael Niedermayer	89b5039ff2	avutil/mem: add av_memdup() Signed-off-by: Michael Niedermayer <michaelni@gmx.at>	12 years ago
Stefano Sabatini	1c1a2d1319	lavu/mem: remove redundant comment from av_dynarray_add() The function is documented in mem.h.	12 years ago
Fabrizio Gennari	91b747ac78	mem: Fix usage of memalign() on DJGPP. Credits to Khusraw of bttr-software.de forum. Signed-off-by: Carl Eugen Hoyos <cehoyos@ag.or.at>	12 years ago
Anton Khirnov	f935aca44c	av_memcpy_backptr: avoid an infinite loop for back = 0 CC:libav-stable@libav.org	12 years ago
Michael Niedermayer	2c21d34ea4	avutil/mem: do a small set of checks for memalign hack before freeing. These can detect some kinds of memory and or pointer corruptions Signed-off-by: Michael Niedermayer <michaelni@gmx.at>	12 years ago
Michael Niedermayer	58f30175e1	mem: minor simplification of the alignment hack code Idea-by: wanzhang Signed-off-by: Michael Niedermayer <michaelni@gmx.at>	12 years ago
Anton Khirnov	cb45553f57	Remove pointless #undefs of previously forbidden functions.	12 years ago
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>	12 years ago
Diego Biurrun	5bac2d0c30	avutil: Move memcpy_backptr() to mem.c The function is used elsewhere and does not belong with the LZO code.	12 years ago
Diego Biurrun	5532cf3178	avutil/mem: K&R formatting cosmetics	12 years ago
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>	13 years ago
Clément Bœsch	7c84e7d337	mem: heap memory poisoning. Enable it by default with FATE. limitation: not random, and not supported with realloc.	13 years ago
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>	13 years ago
Reimar Döffinger	1a65d50ee7	mem.c: fix wrong comment. Overwriting the av_malloc etc. functions is not easily possible anymore, even for systems that support overriding symbols in shared libraries in principle. Signed-off-by: Reimar Döffinger <Reimar.Doeffinger@gmx.de>	13 years ago
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>	13 years ago
Alex Converse	7181c4edee	cosmetics: Remove extra newlines at EOF	13 years ago
Michael Niedermayer	5a8e994287	mem: add av_max_alloc() to limit the maximum amount that may be allocated in one piece Signed-off-by: Michael Niedermayer <michaelni@gmx.at>	13 years ago
Hanspeter Niederstrasser	bed04e2b03	Correct use of OSX to Mac OS X and properly format yasm providers on Mac OS X Signed-off-by: Michael Niedermayer <michaelni@gmx.at>	13 years ago
Michael Niedermayer	fc11927890	mem: fix memalign hack av_realloc() Signed-off-by: Michael Niedermayer <michaelni@gmx.at>	13 years ago
Nicolas George	5cd754bca2	Introduce av_realloc_f. av_realloc_f helps avoiding memory-leaks in typical uses of realloc. Signed-off-by: Nicolas George <nicolas.george@normalesup.org> Signed-off-by: Michael Niedermayer <michaelni@gmx.at>	13 years ago
Laurent Aimar	ccecab4a0d	Add av_calloc() helper. Signed-off-by: Michael Niedermayer <michaelni@gmx.at>	13 years ago
Michael Niedermayer	a39bd458a0	mem: Trying to workaround posix_memalign() bug on OSX This patch is based on a patch by John Stebbins Signed-off-by: Michael Niedermayer <michaelni@gmx.at>	14 years ago
Stefano Sabatini	6b4c0be558	mem: define the MAX_MALLOC_SIZE constant and use it in place of INT_MAX This makes re-dimensionating the constant simpler, since now it is defined only in one place.	14 years ago
Ivan Kalvachev	518cdff81f	Fix posix_memalign() usage when libavutil is compiled outside FFmpeg. To use posix_memalign() "#define _XOPEN_SOURCE 600" have to be defined. FFmpeg configure defines it from the command line through config.mak, but when libavutil is used outside of FFmpeg the define is missing. Signed-off-by: Ivan Kalvachev <ikalvachev@gmail.com> Signed-off-by: Michael Niedermayer <michaelni@gmx.at>	14 years ago
Michael Niedermayer	08675bb399	mem: Choose alignment at compile time depending on AVX enabledness. Signed-off-by: Michael Niedermayer <michaelni@gmx.at>	14 years ago
Michael Niedermayer	c8981edd90	Only add 1 byte to av_malloc(0) when it actually returned NULL Signed-off-by: Michael Niedermayer <michaelni@gmx.at>	14 years ago
Michael Niedermayer	91ff05f6ac	Make av_realloc(0) behave like our av_malloc(0) Signed-off-by: Michael Niedermayer <michaelni@gmx.at>	14 years ago
Anton Khirnov	35ceaa7376	Move ff_dynarray_add to lavu and make it public.	14 years ago
Michael Niedermayer	5a36783bc4	Fix all malloc(0) issues Signed-off-by: Michael Niedermayer <michaelni@gmx.at>	14 years ago

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106 Commits (e5774f28d15887d36da25ae1ef2f1b3d7a75f449)