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2022-02-24avutil/fifo: Don't include avutil.hAndreas Rheinhardt
Reviewed-by: Martin Storsjö <martin@martin.st> Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
2022-02-15lavu/fifo: fix a corner case in av_fifo_grow2()Anton Khirnov
When the fifo is grown by exactly the current write offset, it would end up with offset_w = nb_elems. If av_fifo_write_from_cb() is called in such a state, the user callback would get callled with *nb_elems=0, which will then cause the write to return without writing anything.
2022-02-09lavu/fifo: fix regressionHaihao Xiang
offset_w might be updated after growing the FIFO Fix ticket #9630 Tested-by: U. Artie Eoff <ullysses.a.eoff@intel.com> Reviewed-by: mkver Reviewed-by: U. Artie Eoff <ullysses.a.eoff@intel.com> Signed-off-by: Haihao Xiang <haihao.xiang@intel.com>
2022-02-07avutil/fifo: Deprecate old FIFO APIAnton Khirnov
Users should switch to the superior AVFifo API. Unfortunately AVFifoBuffer fields cannot be marked as deprecated because it would trigger a warning wherever fifo.h is #included, due to inlined av_fifo_peek2().
2022-02-07lavu/fifo: add a flag for automatically growing the FIFO as neededAnton Khirnov
This will not increase the FIFO beyond 1MB, unless the caller explicitly specifies otherwise.
2022-02-07lavu/fifo: Add new AVFifo API based upon the notion of element sizeAnton Khirnov
Many AVFifoBuffer users operate on fixed-size elements (e.g. pointers), but the current FIFO API deals exclusively in bytes, requiring extra complexity in all these callers. Add a new AVFifo API creating a FIFO with an element size that may be larger than a byte. All operations on such a FIFO then operate on complete elements. This API does not reuse AVFifoBuffer and its API at all, but instead uses an opaque struct called AVFifo. The AVFifoBuffer API will be deprecated in a future commit once all of its users have been switched to the new API. Not reusing AVFifoBuffer also allowed to use the full range of size_t from the beginning.
2022-02-07lavu/fifo: disallow overly large fifo sizesAnton Khirnov
The API currently allows creating FIFOs up to - UINT_MAX: av_fifo_alloc(), av_fifo_realloc(), av_fifo_grow() - SIZE_MAX: av_fifo_alloc_array() However the usable limit is determined by - rndx/wndx being uint32_t - av_fifo_[size,space] returning int so no FIFO should be larger than the smallest of - INT_MAX - UINT32_MAX - SIZE_MAX (which should be INT_MAX an all commonly used platforms). Return an error on trying to allocate FIFOs larger than this limit.
2022-02-07avutil/fifo: Use av_fifo_generic_peek_at() for av_fifo_generic_peek()Andreas Rheinhardt
Avoids code duplication. It furthermore properly checks for buf_size to be > 0 before doing anything. Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
2022-01-10lavu/fifo: return errors on trying to read/write too muchAnton Khirnov
Trying to write too much will currently overwrite previous data. Trying to read too much will either av_assert2() in av_fifo_drain() or return old data. Trying to peek too much will either av_assert2() in av_fifo_generic_peek_at() or return old data. Return an error code in all these cases, which is safer and more consistent.
2022-01-10lavu/fifo: drop useless commentsAnton Khirnov
This object was never intended to be thread-safe, so these carry no useful information.
2022-01-10lavu/fifo: do not copy the whole fifo when reallocatingAnton Khirnov
av_realloc() the buffer and only move the part of the ring buffer that needs it. Also avoids allocating a temporary fifo.
2022-01-10lavu/fifo: simplify av_fifo_alloc()Anton Khirnov
Turn it into a wrapper around av_fifo_alloc_array().
2016-06-03libavutil/fifo: Fix fifo grow stepJan Sebechlebsky
Fifo was reallocating always to twice of the requested size. This fixes it to reallocate to requested size, or twice of the original size - whichever is greater. Signed-off-by: Jan Sebechlebsky <sebechlebskyjan@gmail.com> Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
2016-05-11Merge commit 'd12b5b2f135aade4099f4b26b0fe678656158c13'Derek Buitenhuis
* commit 'd12b5b2f135aade4099f4b26b0fe678656158c13': build: Split test programs off into separate files Some conversions done by: James Almer <jamrial@gmail.com> Merged-by: Derek Buitenhuis <derek.buitenhuis@gmail.com>
2016-04-07build: Split test programs off into separate filesDiego Biurrun
This avoids spurious library rebuilds when only the test program code is changed and simplifies the build system.
2015-10-14avutil/fifo: add function av_fifo_generic_peek_at()Zhang Rui
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
2015-10-13avutil/fifo: Fix thread saftey of av_fifo_generic_peek()Michael Niedermayer
changing the context state and restoring it is not safe if another thread writes data into the fifo Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
2015-08-19avfilter: add showfreqs filterPaul B Mahol
2015-07-14avutil/fifo: Fix the case where func() returns less bytes than requested in ↵Zhang Rui
av_fifo_generic_write() Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
2014-11-24avutil: remove FF_CONST_AVUTIL53, its no longer neededMichael Niedermayer
version is 54 already Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
2014-05-20lavu/fifo: add av_fifo_alloc_array functionLukasz Marek
Allows to alloc fifo buffer by passing number of elements and size of element. Signed-off-by: Lukasz Marek <lukasz.m.luki2@gmail.com>
2014-05-14avutil/fifo: delay addition of const from ↵Michael Niedermayer
78d3453c4a2efef9bc079e8f3458653beafcf990 until next major ABI bump This unbreaks API, for example audacity has more build errors due to this Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
2014-05-08lavu/fifo: add av_fifo_freep functionLukasz Marek
Function allows to free fifo and reset freed pointer. Signed-off-by: Lukasz Marek <lukasz.m.luki2@gmail.com>
2014-05-05lavu/fifo: add const to argumentsLukasz Marek
Signed-off-by: Lukasz Marek <lukasz.m.luki2@gmail.com> Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
2013-09-03avutil/fifo: assert that theres enough data in the fifo on drain calls.Michael Niedermayer
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
2013-07-07Merge commit '6516632967da5e6bd7d6136e8678f826669ed26e'Michael Niedermayer
* commit '6516632967da5e6bd7d6136e8678f826669ed26e': tests: Only run noproxy test if networking is enabled fifo: K&R formatting cosmetics Conflicts: libavformat/Makefile libavutil/fifo.c Merged-by: Michael Niedermayer <michaelni@gmx.at>
2013-07-06fifo: K&R formatting cosmeticsLuca Barbato
2012-12-05Merge commit 'cb45553f577f8e0ebfe05d3287e1b6fa5859b967'Michael Niedermayer
* 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>
2012-12-05Remove pointless #undefs of previously forbidden functions.Anton Khirnov
2012-05-15fifo: add av_fifo_grow()Michael Niedermayer
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
2011-12-23fifo: Make writes atomic.Michael Niedermayer
Prior to this a X bytes write could be seen as less than X bytes being available if the check was done at an unfortunate moment. Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
2011-08-27Merge remote-tracking branch 'qatar/master'Michael Niedermayer
* qatar/master: fifo: add FIFO API test program, and fate test fifo: add av_fifo_peek2(), and deprecate av_fifo_peek() postprocess.c: filter name needs to be double 0 terminated doxygen: fix wrong comment syntax, //< vs. ///< doxygen: drop pointless star from pointer variable names Replace deprecated av_find_stream_info() by avformat_find_stream_info(). xmv: eliminate superfluous zeroing of zero data configure: fix typo in avconv dependency list Conflicts: configure doc/APIchanges libavutil/Makefile libavutil/avutil.h Merged-by: Michael Niedermayer <michaelni@gmx.at>
2011-08-26fifo: add FIFO API test program, and fate testStefano Sabatini
Signed-off-by: Anton Khirnov <anton@khirnov.net>
2011-08-14fifo: return AVERROR(ENOMEM) rather -1 in av_fifo_realloc2()Stefano Sabatini
2011-08-14fifo: apply misc cosmetic fixesStefano Sabatini
2011-05-09fifo: use av_freep()Michael Niedermayer
With this change libavutil uses av_freep() everywhere where it makes sense. Remaining av_free() use in it has the used pointer become inaccessible quickly soo zeroing makes no sense. Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
2011-03-19Replace FFmpeg with Libav in licence headersMans Rullgard
Signed-off-by: Mans Rullgard <mans@mansr.com>
2010-02-23Clarify non constness of src in av_fifo_generic_write()Michael Niedermayer
Originally committed as revision 21997 to svn://svn.ffmpeg.org/ffmpeg/trunk
2009-04-03Implement av_fifo_space().Olivier Guilyardi
Patch by Olivier Guilyardi list et samalyse DOT c0m. Originally committed as revision 18321 to svn://svn.ffmpeg.org/ffmpeg/trunk
2009-03-09Reorder arguments for av_fifo_generic_read to be more logical andReimar Döffinger
consistent with av_fifo_generic_write. Originally committed as revision 17914 to svn://svn.ffmpeg.org/ffmpeg/trunk
2009-03-09Add av_fifo_reset function to completely reset fifo state, which makesReimar Döffinger
it easier to reuse the fifo. Originally committed as revision 17901 to svn://svn.ffmpeg.org/ffmpeg/trunk
2009-03-09indentMichael Niedermayer
Originally committed as revision 17897 to svn://svn.ffmpeg.org/ffmpeg/trunk
2009-03-08Remove more functions disabled by major version bump.Reimar Döffinger
Originally committed as revision 17876 to svn://svn.ffmpeg.org/ffmpeg/trunk
2009-03-08Replace all uses of the replaced av_fifo_read by av_fifo_generic_readReimar Döffinger
Originally committed as revision 17873 to svn://svn.ffmpeg.org/ffmpeg/trunk
2009-03-08Remove av_fifo_read, API is already broken and major version will be bumped ↵Reimar Döffinger
soon. Originally committed as revision 17870 to svn://svn.ffmpeg.org/ffmpeg/trunk
2009-03-08Allocate AVFifoBuffer through the fifo API to reduce future API/ABI issues.Michael Niedermayer
Yes this breaks ABI/API but ive already broken it and will bump avutil major soon. Originally committed as revision 17869 to svn://svn.ffmpeg.org/ffmpeg/trunk
2009-03-08Comments to indicate where memory barriers may be needed.Michael Niedermayer
Originally committed as revision 17867 to svn://svn.ffmpeg.org/ffmpeg/trunk
2009-03-08Try to fix the 1 byte cannot be used issue.Michael Niedermayer
Originally committed as revision 17865 to svn://svn.ffmpeg.org/ffmpeg/trunk
2009-01-28spelling/grammar/consistency review part IDiego Biurrun
Originally committed as revision 16840 to svn://svn.ffmpeg.org/ffmpeg/trunk
2009-01-25Drop deprecated av_fifo_write function with the next libavutil version bump.Diego Biurrun
Originally committed as revision 16782 to svn://svn.ffmpeg.org/ffmpeg/trunk
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