FFmpeg

Commit Graph

Author	SHA1	Message	Date
Ganesh Ajjanagadde	e11e32686f	avcodec/bitstream: replace qsort with AV_QSORT Commit `3a0a2f33a6` claims large performance advantages for AV_QSORT over libc's qsort. The reason is that I suspect that libc's qsort (at least on non LTO builds, like the typical FFmpeg config) can't inline the comparison callback: https://stackoverflow.com/questions/5290695/is-there-any-way-a-c-c-compiler-can-inline-a-c-callback-function. AV_QSORT has two things going for it: 1. The guaranteed inlining of qsort itself. This yields a negligible boost that may be ignored. 2. The more serious possibility of potentially allowing the comparison function to be inlined - this is likely responsible for the large boosts reported. There is a comment explaining that this is a place that could use some performance improvement. Thus AV_QSORT is used to achieve that. Benchmarks deemed unnecessary due to existing claims about AV_QSORT. Tested with FATE. Reviewed-by: Michael Niedermayer <michael@niedermayer.cc> Signed-off-by: Ganesh Ajjanagadde <gajjanagadde@gmail.com>	9 years ago
Andreas Cadhalpun	28efeb6502	doc: avoid incorrect phrase 'allows to' Also fix typo found by Lou Logan: Sacrifying -> Sacrificing Reviewed-by: Lou Logan <lou@lrcd.com> Signed-off-by: Andreas Cadhalpun <Andreas.Cadhalpun@googlemail.com>	10 years ago
Andreas Cadhalpun	ed0b1db640	doc: fix spelling errors Neccessary -> Necessary formated -> formatted thee -> the eventhough -> even though seperately -> separately Reviewed-by: Michael Niedermayer <michaelni@gmx.at> Signed-off-by: Andreas Cadhalpun <Andreas.Cadhalpun@googlemail.com>	10 years ago
Michael Niedermayer	291ad5cc9c	avcodec/bitstream: Assert that there is enough space left in avpriv_copy_bits() Signed-off-by: Michael Niedermayer <michaelni@gmx.at>	10 years ago
Vittorio Giovara	6a85dfc830	lavc: Replace av_dlog and tprintf with internal macros	10 years ago
Diego Biurrun	7f9f771eac	avcodec: Don't anonymously typedef structs	10 years ago
Michael Niedermayer	d266ecff4b	avcodec/bitstream: remove trivial assert Fixed CID1224273 Signed-off-by: Michael Niedermayer <michaelni@gmx.at>	11 years ago
Michael Niedermayer	a2de7b1bd5	avcodec/bitstream: document the double volatile Suggested-by: Reimar Döffinger <Reimar.Doeffinger@gmx.de> Signed-off-by: Michael Niedermayer <michaelni@gmx.at>	11 years ago
Michael Niedermayer	329898aa45	avcodec/bitstream: try to workaround internal compiler bug in gcc 4.2 gcc 4.2 seems not maintained anymore so theres no option besides just working around it. Signed-off-by: Michael Niedermayer <michaelni@gmx.at>	11 years ago
Michael Niedermayer	e6f9fc4adc	avcodec/bitstream: try to make vlc init code inherently thread safe also remove spinlock, it doesnt work on AIX Signed-off-by: Michael Niedermayer <michaelni@gmx.at>	11 years ago
Michael Niedermayer	f7f96cf4bc	avcodec/bitstream: fill invalid vlc tables entries as last pass instead of first This avoids writing entries twice Signed-off-by: Michael Niedermayer <michaelni@gmx.at>	11 years ago
Michael Niedermayer	600cbf3672	avcodec/bitstream: zero vlc tables on allocation Signed-off-by: Michael Niedermayer <michaelni@gmx.at>	11 years ago
Michael Niedermayer	e20e854ca0	vcodec/bitstream: use av_malloc_array() Signed-off-by: Michael Niedermayer <michaelni@gmx.at>	11 years ago
Michael Niedermayer	622d463000	avcodec/bitstream: assert that no integer overflow happened when writing codes in build_table() Signed-off-by: Michael Niedermayer <michaelni@gmx.at>	11 years ago
Michael Niedermayer	0f65503799	avcodec/bitstream: remove unused variable Signed-off-by: Michael Niedermayer <michaelni@gmx.at>	11 years ago
Alexandra Khirnova	9b8d11a76a	avcodec: Use av_reallocp where suitable Signed-off-by: Martin Storsjö <martin@martin.st>	11 years ago
Diego Biurrun	29c455ce3d	bitstream: Check the result of av_malloc()	11 years ago
Michael Niedermayer	9386f334af	avcodec/bitstream: Dont try to free buffers for static VLCs Such buffers are not malloced thus freeing would be bad. Note though this condition never could have happened so this is more for correctness sake and not a true bugfix Fixes CID1061047 Signed-off-by: Michael Niedermayer <michaelni@gmx.at>	11 years ago
Michael Niedermayer	f80ccf074a	avcodec/ff_init_vlc_sparse: use a local array for static vlcs avoiding malloc() Signed-off-by: Michael Niedermayer <michaelni@gmx.at>	11 years ago
Michael Niedermayer	6af8326354	avcodec/ff_init_vlc_sparse: use a spinlock for thread sync Signed-off-by: Michael Niedermayer <michaelni@gmx.at>	11 years ago
Michael Niedermayer	a9903f7ec1	Revert "bitstream: make vlc init of static tables thread safe." This reverts commit `4b6869d6e0`. Conflicts: libavcodec/bitstream.c This code can cause assertion failures on artificial OOM situations It will be replaced by a solution that doesnt have this issue in the following commits. Signed-off-by: Michael Niedermayer <michaelni@gmx.at>	11 years ago
Piotr Bandurski	aa74810fc6	bitstream: fix a crash in case of oom fixes ticket #2766 Signed-off-by: Michael Niedermayer <michaelni@gmx.at>	12 years ago
Luca Barbato	f80b60ad59	bitstream: forward error values and drop few abort()	12 years ago
Luca Barbato	f776899a17	bitstream: K&R formatting cosmetics	12 years ago
Michael Niedermayer	1d7e6a6bde	avcodec/bitstream: print vlc length in error case. Signed-off-by: Michael Niedermayer <michaelni@gmx.at>	12 years ago
Michael Niedermayer	83330cf5fa	init_vlc_sparse: fix leak on error Fixes CID1005312 Signed-off-by: Michael Niedermayer <michaelni@gmx.at>	12 years ago
Michael Niedermayer	6998af4a40	avcodec/bitstream: check codes in ff_init_vlc_sparse() Signed-off-by: Michael Niedermayer <michaelni@gmx.at>	12 years ago
Michael Niedermayer	fb3e3808ae	avcodec/bitstream: Check bits in ff_init_vlc_sparse() Fixes out of array reads Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind Signed-off-by: Michael Niedermayer <michaelni@gmx.at>	12 years ago
Diego Biurrun	511cf612ac	miscellaneous typo fixes	12 years ago
Michael Niedermayer	4b6869d6e0	bitstream: make vlc init of static tables thread safe. Signed-off-by: Michael Niedermayer <michaelni@gmx.at>	12 years ago
Michael Niedermayer	eed865540a	Revert "Add assert that the avcodec lock is held when initializing static VLC tables." This reverts commit `dd154198b1`.	12 years ago
Reimar Döffinger	dd154198b1	Add assert that the avcodec lock is held when initializing static VLC tables. Signed-off-by: Reimar Döffinger <Reimar.Doeffinger@gmx.de>	12 years ago
Diego Biurrun	d5c62122a7	Move av_reverse table to libavcodec It is only used in that library.	12 years ago
Martin Storsjö	aefea4d0de	Rename ff_put_string to avpriv_put_string This allows using it from libavformat as well. This will be used by the RTP/JPEG depacketizer. Signed-off-by: Martin Storsjö <martin@martin.st>	12 years ago
Michael Niedermayer	bb1e0e80b0	libavcodec/bitstream: switch to av_assert Signed-off-by: Michael Niedermayer <michaelni@gmx.at>	12 years ago
Michael Niedermayer	2e909b3c77	bitstream: build_table, check table_nb_bits. Fixes null ptr deref. Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind Signed-off-by: Michael Niedermayer <michaelni@gmx.at>	13 years ago
Martin Storsjö	e96b4a53df	vlc/rl: Add ff_ prefix to the nonstatic symbols Signed-off-by: Martin Storsjö <martin@martin.st>	13 years ago
Alex Converse	7181c4edee	cosmetics: Remove extra newlines at EOF	13 years ago
Diego Biurrun	da9cea77e3	Fix a bunch of common typos.	13 years ago
Anton Khirnov	9f51c682ee	lavc: use avpriv_ prefix for ff_copy_bits and align_put_bits. They are used in lavf.	13 years ago
Nicolas George	198ed6474d	bitstream: Replace av_realloc by av_realloc_f when relevant. Signed-off-by: Nicolas George <nicolas.george@normalesup.org> Signed-off-by: Michael Niedermayer <michaelni@gmx.at>	13 years ago
Mans Rullgard	0d5c349ac4	put_bits: remove ALT_BITSTREAM_WRITER The code for this variant does not compile. Signed-off-by: Mans Rullgard <mans@mansr.com>	14 years ago
Michael Niedermayer	294e5475c2	ffv1: fix undefined behavior with insane widths. The new tables is large enough to prevent this together with our image size checks. Signed-off-by: Michael Niedermayer <michaelni@gmx.at> Signed-off-by: Anton Khirnov <anton@khirnov.net>	14 years ago
Alex Converse	19d824e473	bitstream: Properly promote av_reverse values before shifting.	14 years ago
Diego Biurrun	02a8d43adf	Replace some av_log/printf + #ifdef combinations by av_dlog.	14 years ago
Michael Niedermayer	676d380f2a	Fix undefined behavior in ffv1 with insane widths. The new tables is large enough to prevent this together with our image size checks. Signed-off-by: Michael Niedermayer <michaelni@gmx.at>	14 years ago
Mans Rullgard	2912e87a6c	Replace FFmpeg with Libav in licence headers Signed-off-by: Mans Rullgard <mans@mansr.com>	14 years ago
Loren Merritt	f39ab2071f	change a variable-length array to a malloc. Originally committed as revision 23103 to svn://svn.ffmpeg.org/ffmpeg/trunk	15 years ago
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	15 years ago
Loren Merritt	b23cf13c67	indent Originally committed as revision 22716 to svn://svn.ffmpeg.org/ffmpeg/trunk	15 years ago

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115 Commits (7424a6d0a589d31100d6067ebcb47236c00f4b36)