FFmpeg

Commit Graph

Author	SHA1	Message	Date
Xi Wang	ca6c3f2c53	lzo: fix overflow checking in copy_backptr() The check `src > dst' in the form `&c->out[-back] > c->out' invokes pointer overflow, which is undefined behavior in C. Remove the check. Also replace `&c->out[-back] < c->out_start' with a safe form `c->out - c->out_start < back' to avoid overflow. CC: libav-stable@libav.org Signed-off-by: Xi Wang <xi.wang@gmail.com> Signed-off-by: Luca Barbato <lu_zero@gentoo.org>	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
Mans Rullgard	d82f188504	Remove need for padding in av_memcpy_backptr() Signed-off-by: Mans Rullgard <mans@mansr.com>	12 years ago
Diego Biurrun	ceb754d041	lzo: Use AV_COPY*U macros where appropriate	12 years ago
Diego Biurrun	c08536979b	avutil/lzo: K&R formatting cosmetics	12 years ago
Diego Biurrun	8fb1e26405	lzo: Drop obsolete fast_memcpy reference	12 years ago
Diego Biurrun	193d7eea95	libavutil: Remove broken and pointless lzo test program.	13 years ago
Reimar Döffinger	874da652b3	Avoid av_memcpy_backptr hang without extra branch. This only happens for a "back" value of 0 which is invalid anyway, but lcldec does not properly validate input. Also extend the documentation to specify valid values. Signed-off-by: Reimar Döffinger <Reimar.Doeffinger@gmx.de>	13 years ago
Michael Niedermayer	58c41799ab	lzo: fix memcpy_backptr() with 0 offset Signed-off-by: Michael Niedermayer <michaelni@gmx.at>	13 years ago
Diego Biurrun	c68fafe0d2	doxygen: eliminate Qt-style doxygen syntax	13 years ago
Reimar Döffinger	b9242fd12f	av_lzo1x_decode: properly handle negative buffer length. Treating them like 0 is safest, current code would invoke undefined pointer arithmetic behaviour in this case. Signed-off-by: Reimar Döffinger <Reimar.Doeffinger@gmx.de>	13 years ago
Diego Biurrun	adbfc605f6	doxygen: Consistently use '@' instead of '\' for Doxygen markup. Signed-off-by: Diego Biurrun <diego@biurrun.de>	14 years ago
Mans Rullgard	2912e87a6c	Replace FFmpeg with Libav in licence headers Signed-off-by: Mans Rullgard <mans@mansr.com>	14 years ago
Reimar Döffinger	032f406864	Handle input or output len of 0 properly in lzo decoder. (cherry picked from commit `7d5082600e`)	14 years ago
Reimar Döffinger	7d5082600e	Handle input or output len of 0 properly in lzo decoder.	14 years ago
Diego Biurrun	985fdd534f	Give liblzo benchmark conditionals more descriptive names and add convenience definitions along with instructions for changing them. Originally committed as revision 18387 to svn://svn.ffmpeg.org/ffmpeg/trunk	16 years ago
Diego Biurrun	82a6ef2089	Replace manual setting of the removed av_log_level variable by the corresponding call to av_log_set_level(). Originally committed as revision 18310 to svn://svn.ffmpeg.org/ffmpeg/trunk	16 years ago
Reimar Döffinger	fe4032b66a	Remove more functions disabled by major version bump. Originally committed as revision 17876 to svn://svn.ffmpeg.org/ffmpeg/trunk	16 years ago
Diego Biurrun	0d08e27015	Add necessary header for LIBAVUTIL_VERSION_MAJOR, fixes the warning: libavutil/lzo.c:235:5: warning: "LIBAVUTIL_VERSION_MAJOR" is not defined Originally committed as revision 16962 to svn://svn.ffmpeg.org/ffmpeg/trunk	16 years ago
Reimar Döffinger	a545f067f3	Move doxygen documentation from lzo.c to lzo.h Originally committed as revision 16949 to svn://svn.ffmpeg.org/ffmpeg/trunk	16 years ago
Reimar Döffinger	0b178e5629	Add av_ prefix to LZO stuff and thus make it officially part of the public API. Keep lzo1x_decode until the next major version bump for binary compatibility. Originally committed as revision 16946 to svn://svn.ffmpeg.org/ffmpeg/trunk	16 years ago
Diego Biurrun	bfe3676feb	spelling/grammar/consistency review part II Originally committed as revision 16848 to svn://svn.ffmpeg.org/ffmpeg/trunk	16 years ago
Diego Biurrun	89c9ff504b	spelling/grammar/consistency review part I Originally committed as revision 16840 to svn://svn.ffmpeg.org/ffmpeg/trunk	16 years ago
Peter Ross	6ba10f338a	Add av_memcpy_backptr(): deliberately overlapping memcpy variant. Originally committed as revision 14641 to svn://svn.ffmpeg.org/ffmpeg/trunk	17 years ago
Reimar Döffinger	5e038b4f08	LZO decoder input is const Originally committed as revision 11797 to svn://svn.ffmpeg.org/ffmpeg/trunk	17 years ago
Reimar Döffinger	4302963daa	Move lzo decompression to libavutil Originally committed as revision 7789 to svn://svn.ffmpeg.org/ffmpeg/trunk	18 years ago
Reimar Döffinger	c215e40316	Make sure we do not accidentially "fix" cnt to something < 0 Originally committed as revision 7788 to svn://svn.ffmpeg.org/ffmpeg/trunk	18 years ago
Reimar Döffinger	c0a8b87600	Simplify checks, use that we know that cnt will not be < 0 Originally committed as revision 7787 to svn://svn.ffmpeg.org/ffmpeg/trunk	18 years ago
Reimar Döffinger	56f8647aaa	Remove boundary checks that are actually done "well enough" in copy function Originally committed as revision 7786 to svn://svn.ffmpeg.org/ffmpeg/trunk	18 years ago
Reimar Döffinger	9b2c14df60	Documentation fix: Copy functions should "work" fine for cnt == 0 Originally committed as revision 7785 to svn://svn.ffmpeg.org/ffmpeg/trunk	18 years ago
Reimar Döffinger	1db8c21c1f	Optimize LZO copy operations Originally committed as revision 7784 to svn://svn.ffmpeg.org/ffmpeg/trunk	18 years ago
Michael Niedermayer	960e48f8f0	another >> vs > Originally committed as revision 7779 to svn://svn.ffmpeg.org/ffmpeg/trunk	18 years ago
Michael Niedermayer	bf47272f3c	simpify state and make code 2% faster reimar, dont hesitate to flame me for not sending patches and feel free to revert any or all of my changes to lzo.c if you dont like them Originally committed as revision 7778 to svn://svn.ffmpeg.org/ffmpeg/trunk	18 years ago
Reimar Döffinger	5fe9c42ceb	Add two extra needed bounds checks Originally committed as revision 7777 to svn://svn.ffmpeg.org/ffmpeg/trunk	18 years ago
Michael Niedermayer	801778bc83	replace if(x>>b) by if(x>C) as shifts are slow on some cpus and i have my doubts that gcc can replace the shifts as x is signed, it could in theory but well its gcc ... Originally committed as revision 7776 to svn://svn.ffmpeg.org/ffmpeg/trunk	18 years ago
Reimar Döffinger	d62a0c1e5d	Add code to testcode to ease comparing with liblzo. Originally committed as revision 7775 to svn://svn.ffmpeg.org/ffmpeg/trunk	18 years ago
Reimar Döffinger	a737f1dfdb	LZO optimization: check input buffer bounds less frequently if padded Originally committed as revision 7747 to svn://svn.ffmpeg.org/ffmpeg/trunk	18 years ago
Reimar Döffinger	cf0ef3dc34	Fix buffer end checks in lzo copy code to work in all cases. Originally committed as revision 7731 to svn://svn.ffmpeg.org/ffmpeg/trunk	18 years ago
Reimar Döffinger	266aa26c52	Add lzo test code Originally committed as revision 7727 to svn://svn.ffmpeg.org/ffmpeg/trunk	18 years ago
Reimar Döffinger	214019ed32	Avoid void *-arithmetic Originally committed as revision 6590 to svn://svn.ffmpeg.org/ffmpeg/trunk	18 years ago
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	18 years ago
Reimar Döffinger	f53a2931cf	faster copy functions for lzo decoder that also need padding Originally committed as revision 4882 to svn://svn.ffmpeg.org/ffmpeg/trunk	19 years ago
Reimar Döffinger	d3c71c5002	10l, get_byte returning 0 on error can cause a hang. So let's try with 1 instead... Originally committed as revision 4862 to svn://svn.ffmpeg.org/ffmpeg/trunk	19 years ago
Reimar Döffinger	a9318df2f8	get_byte may not return -1 on error, since it can lead to a negative backptr. Originally committed as revision 4854 to svn://svn.ffmpeg.org/ffmpeg/trunk	19 years ago
Reimar Döffinger	d66fbc14de	Wrong state handling causing decompression errors in some cases Originally committed as revision 4852 to svn://svn.ffmpeg.org/ffmpeg/trunk	19 years ago
Diego Biurrun	5509bffa88	Update licensing information: The FSF changed postal address. Originally committed as revision 4842 to svn://svn.ffmpeg.org/ffmpeg/trunk	19 years ago
Reimar Döffinger	517840c654	Our own LZO (1X) implementation, under LGPL and optimized for readability. Tested on CamStudio sample files. Originally committed as revision 4840 to svn://svn.ffmpeg.org/ffmpeg/trunk	19 years ago

34 Commits (927696aab258c7184ceac9765a305b5f91eef8dc)