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109 Commits

Author SHA1 Message Date
Timothy Gu
04da20e58f dynarray: Change AV_ to FF_ for AV_DYNARRAY_ADD 
The header is not installed and the macro isn't used outside libavutil,
so it is obviously privat to libavutil. Make the name reflect that.
 2016-07-31 10:19:03 -07:00
Zhao Zhili
65b2feb890 avutil/mem: fix memleak 
The original code assumes av_realloc() will free ptr if size is zero.
The assumes is incorrect now.

Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
 2016-07-28 12:09:05 +02:00
Michael Niedermayer
fc91eeab0b avutil/mem: Add av_fast_mallocz() 
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
 2015-11-18 22:05:16 +01:00
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>
 2015-07-13 02:41:43 +02:00
Michael Niedermayer
b3415e4c5f avutil/mem: Fix potential overflow in overallocation code 
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
 2015-07-11 22:47:09 +02:00
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>
 2015-05-10 16:06:50 +02:00
Michael Niedermayer
63186ac5f1 avutil/mem: replace remaining void **/*** casts by memcpy() 
This is similar to 6039248018

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
 2015-02-03 14:28:56 +01:00
Michael Niedermayer
fa73358c9b Merge commit '60392480181f24ebf3ab48d8ac3614705de90152' 
* commit '60392480181f24ebf3ab48d8ac3614705de90152':
  mem: fix pointer pointer aliasing violations

Conflicts:
	libavutil/mem.c

Merged-by: Michael Niedermayer <michaelni@gmx.at>
 2015-02-01 13:52:22 +01:00
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>
 2015-02-01 02:28:40 +01:00
Michael Niedermayer
c8571c61ec Merge commit '8ddc32629a6d6be77256694c9e322dde134609f3' 
* commit '8ddc32629a6d6be77256694c9e322dde134609f3':
  mem: add av_strndup() for duplicating substrings

Conflicts:
	libavutil/mem.c
	libavutil/mem.h
	libavutil/version.h

Merged-by: Michael Niedermayer <michaelni@gmx.at>
 2014-08-14 00:29:06 +02:00
Anton Khirnov
8ddc32629a mem: add av_strndup() for duplicating substrings 2014-08-13 17:24:18 +00:00
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>
 2014-03-29 09:48:48 +01:00
Michael Niedermayer
9ba1190297 avutil/mem: avoid using intptr_t to access void* in av_dynarray_add() 
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
 2014-03-22 21:14:57 +01:00
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>
 2014-03-22 20:53:36 +01:00
Michael Niedermayer
7c888ae746 Merge commit 'cce3e0a49f0dd030262c28d9c53de0bd2fd909c4' 
* commit 'cce3e0a49f0dd030262c28d9c53de0bd2fd909c4':
  Move av_fast_{m,re}alloc from lavc to lavu.

Conflicts:
	libavcodec/avcodec.h
	libavcodec/utils.c
	libavutil/mem.c
	libavutil/version.h

Merged-by: Michael Niedermayer <michaelni@gmx.at>
 2013-11-14 15:04:04 +01:00
Anton Khirnov
cce3e0a49f Move av_fast_{m,re}alloc from lavc to lavu. 2013-11-14 09:42:22 +01:00
Michael Niedermayer
21b3563dcb Merge remote-tracking branch 'qatar/master' 
* qatar/master:
  mem: Make av_strdup allocate using av_realloc

Merged-by: Michael Niedermayer <michaelni@gmx.at>
 2013-10-17 08:13:42 +02:00
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>
 2013-10-16 18:59:01 +03:00
Michael Niedermayer
6c169c2fa4 Merge commit '67e285ceca1cb602a5ab87010b30d904527924fe' 
* commit '67e285ceca1cb602a5ab87010b30d904527924fe':
  mem: Handle av_reallocp(..., 0) properly

Merged-by: Michael Niedermayer <michaelni@gmx.at>
 2013-09-21 09:36:58 +02:00
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>
 2013-09-20 21:23:08 +03:00
Michael Niedermayer
c74c3fb142 Merge commit '3feb3d6ce4be0a09a9f8f13d613bed25b523b6e7' 
* commit '3feb3d6ce4be0a09a9f8f13d613bed25b523b6e7':
  mem: Introduce av_reallocp

Conflicts:
	doc/APIchanges
	libavutil/mem.c
	libavutil/mem.h
	libavutil/version.h

Merged-by: Michael Niedermayer <michaelni@gmx.at>
 2013-09-17 11:06:26 +02:00
Luca Barbato
3feb3d6ce4 mem: Introduce av_reallocp 2013-09-16 19:36:37 +02:00
Michael Niedermayer
5866c107a9 Merge commit 'c3e6e8f06c42499bd020fd0b37f9542150e6067b' 
* commit 'c3e6e8f06c42499bd020fd0b37f9542150e6067b':
  mem: Do not check unsigned values for negative size

Conflicts:
	libavutil/mem.c

Merged-by: Michael Niedermayer <michaelni@gmx.at>
 2013-09-06 12:21:16 +02:00
Michael Niedermayer
92424a45d0 Merge commit 'b634b36fcebfe16b837b6c4044f5d5cb99a75040' 
* commit 'b634b36fcebfe16b837b6c4044f5d5cb99a75040':
  mem: Improve documentation wording and spelling

Conflicts:
	libavutil/mem.c
	libavutil/mem.h

Merged-by: Michael Niedermayer <michaelni@gmx.at>
 2013-09-06 12:05:02 +02:00
Diego Biurrun
c3e6e8f06c mem: Do not check unsigned values for negative size 2013-09-05 12:38:43 +02:00
Diego Biurrun
b634b36fce mem: Improve documentation wording and spelling 2013-09-05 12:38:43 +02:00
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>
 2013-08-09 13:47:10 +02:00
Michael Niedermayer
fbc472da29 avutil/mem: simplify av_reallocp_array() by using av_realloc_f() 
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
 2013-06-05 14:40:31 +02:00
Michael Niedermayer
30b491f1c9 Merge commit '3b4feac1ec14f861bdd7f494f288f4d8dd7f449e' 
* commit '3b4feac1ec14f861bdd7f494f288f4d8dd7f449e':
  movenc: Keep track of the allocated size for the cluster array
  mem: Add av_realloc_array and av_reallocp_array

Conflicts:
	doc/APIchanges
	libavformat/movenc.c
	libavutil/mem.c
	libavutil/mem.h
	libavutil/version.h

Merged-by: Michael Niedermayer <michaelni@gmx.at>
 2013-06-05 11:19:16 +02:00
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
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
 2013-05-13 13:52:31 +02:00
Stefano Sabatini
84be806982 lavu: define FF_MEMORY_POISON and use it 
Allow single-place definition of constant used to fill poisoned memory.
 2013-05-13 13:52:26 +02:00
Stefano Sabatini
ee9794ed20 lavu/mem: fix potential int overflow and crash in av_dynarray_add() 
Also extend documentation accordingly.
 2013-05-08 01:39:12 +02:00
Michael Niedermayer
89b5039ff2 avutil/mem: add av_memdup() 
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
 2013-05-02 13:44:05 +02:00
Stefano Sabatini
1c1a2d1319 lavu/mem: remove redundant comment from av_dynarray_add() 
The function is documented in mem.h.
 2013-04-27 20:34:10 +02:00
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>
 2013-03-10 11:12:56 +01:00
Michael Niedermayer
4ba35194a9 Merge commit 'f935aca44c674d30e3ed940ef73bbad1228a5855' 
* commit 'f935aca44c674d30e3ed940ef73bbad1228a5855':
  av_memcpy_backptr: avoid an infinite loop for back = 0
  4xm: check the return value of read_huffman_tables().

Conflicts:
	libavcodec/4xm.c
	libavutil/mem.c

Merged-by: Michael Niedermayer <michaelni@gmx.at>
 2013-02-24 12:22:51 +01:00
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
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>
 2013-02-22 20:42:33 +01:00
Michael Niedermayer
58f30175e1 mem: minor simplification of the alignment hack code 
Idea-by: wanzhang
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
 2012-12-14 05:36:22 +01:00
Michael Niedermayer
99efd59626 Merge commit 'cb45553f577f8e0ebfe05d3287e1b6fa5859b967' 
* commit 'cb45553f577f8e0ebfe05d3287e1b6fa5859b967':
  Remove pointless #undefs of previously forbidden functions.
  fate: Add dependencies for bmp, cdxl, dfa, mp3

Conflicts:
	doc/examples/muxing.c
	libavfilter/filtfmts.c
	libavutil/des.c
	libavutil/eval.c
	libavutil/log.c
	libavutil/parseutils.c
	tests/fate/mp3.mak

Merged-by: Michael Niedermayer <michaelni@gmx.at>
 2012-12-05 13:34:45 +01:00
Anton Khirnov
cb45553f57 Remove pointless #undefs of previously forbidden functions. 2012-12-04 21:40:22 +01:00
Michael Niedermayer
25ca8aef54 Merge commit '4a606c830ae664013cea33800094d4d0f4ec62da' 
* commit '4a606c830ae664013cea33800094d4d0f4ec62da':
  av_memcpy_backptr: optimise some special cases
  mpegvideo: simplify dxy calculation in hpel_motion()
  build: add rules to generate preprocessed source files

Conflicts:
	Makefile
	libavutil/mem.c
	library.mak

Merged-by: Michael Niedermayer <michaelni@gmx.at>
 2012-11-23 13:30:51 +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
Michael Niedermayer
aa604e8e33 Merge remote-tracking branch 'qatar/master' 
* qatar/master:
  avutil: Make LZO decoder code configure-time selectable
  avutil: Move memcpy_backptr() to mem.c
  configure: detect parisc64 automatically
  configure: detect ppc64 automatically
  configure: detect mips64 automatically
  configure: generalise 64-bit test
  smoothstreamingenc: Don't assume streams start from timestamp 0

Conflicts:
	configure
	libavutil/Makefile
	libavutil/lzo.c
	libavutil/lzo.h
	libavutil/mem.c
	libavutil/mem.h

Merged-by: Michael Niedermayer <michaelni@gmx.at>
 2012-10-25 13:15:58 +02:00
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
Michael Niedermayer
6912e7a008 Merge remote-tracking branch 'qatar/master' 
* qatar/master:
  configure: Group math functions into a separate variable
  avutil/mem: K&R formatting cosmetics
  avutil/lzo: K&R formatting cosmetics

Conflicts:
	configure
	libavutil/mem.c

Merged-by: Michael Niedermayer <michaelni@gmx.at>
 2012-10-20 13:18:59 +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
Clément Bœsch
7c84e7d337 mem: heap memory poisoning. 
Enable it by default with FATE.
limitation: not random, and not supported with realloc.
 2012-07-02 21:02:15 +02:00