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sec gathering entropy
This may fix the failures on windows
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
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precission clock()
This should fix issues on BSD
CLOCKS_PER_SEC is 128 on BSD while SUSv2 requires it to be a million
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
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Tested-by: Thomas Turner <thomastdt@googlemail.com>
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
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potential alignment issues
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
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* 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>
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entropy pool
This should theoretically improve the randomness slightly
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
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arc4random() was designed as a superior interface for system random
number generation, designed for OpenBSD and subsequently incorporated by
other BSD's, Mac OS X, and some non-standard libc's. It is thus an improvement to
use it whenever available.
As a side note, this may or may not get included in glibc, and there is
a proposal to create a posix_random family based on these ideas:
http://austingroupbugs.net/view.php?id=859.
Tested on Mac OS X.
Signed-off-by: Ganesh Ajjanagadde <gajjanagadde@gmail.com>
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Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
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* commit '01d245ef4392152dbdc78a6ba4dfa0a6e8b08e6f':
random_seed: Rewrite the generic clock() based seed code
Conflicts:
libavutil/random_seed.c
See: 66531c75d3bfd8a013acd8bd3c04a131dae2a1a0
Merged-by: Michael Niedermayer <michaelni@gmx.at>
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The new code is faster and reuses the previous state in case of
multiple calls.
The previous code could easily end up in near-infinite loops,
if the difference between two clock() calls never was larger than
1.
This makes fate-parseutils finish in finite time when run in wine,
if CryptGenRandom isn't available (which e.g. isn't available if
targeting Windows RT/metro).
Patch originally by Michael Niedermayer but with some modifications
by Martin Storsjö.
Signed-off-by: Martin Storsjö <martin@martin.st>
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* commit '880391ed2d2faf796ca3a16f63cec69767546a21':
libavutil: use avpriv_open()
Conflicts:
libavutil/random_seed.c
Merged-by: Michael Niedermayer <michaelni@gmx.at>
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Signed-off-by: Anton Khirnov <anton@khirnov.net>
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* commit '0a75d1da23b8659ec49391469bb592da12760077':
options_table: refs option is not snow-only
random_seed: Support using CryptGenRandom on windows
doc: update the faq entry about custom I/O
Conflicts:
doc/faq.texi
libavcodec/options_table.h
Merged-by: Michael Niedermayer <michaelni@gmx.at>
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Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
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Fixes CID733787
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
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Signed-off-by: Martin Storsjö <martin@martin.st>
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Signed-off-by: Derek Buitenhuis <derek.buitenhuis@gmail.com>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
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unistd.h is used for open/read/close, but if this header does not
exist, there's probably no use in trying to open /dev/*random
at all.
Signed-off-by: Martin Storsjö <martin@martin.st>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
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unistd.h is used for open/read/close, but if this header does not
exist, there's probably no use in trying to open /dev/*random
at all.
Signed-off-by: Martin Storsjö <martin@martin.st>
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The new code is faster and reuses the previous state in case of
multiple calls. For testing the iterations are reduced and several
entropy sources are disabled.
Its based on SHA-1
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
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Reviewed-by: Nicolas George <nicolas.george@normalesup.org>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
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* qatar/master:
adpcmenc: cosmetics: pretty-printing
ac3dec: cosmetics: pretty-printing
yuv4mpeg: cosmetics: pretty-printing
shorten: remove dead initialization
roqvideodec: set AVFrame reference before reget_buffer.
bmp: fix some 1bit samples.
latmdec: add fate test for audio config change
oma: PCM support
oma: better format detection with small probe buffer
oma: clearify ambiguous if condition
wavpack: Properly clip samples during lossy decode
Code clean-up for crc.c, lfg.c, log.c, random_see.d, rational.c and tree.c.
Cleaned pixdesc.c file in libavutil
zmbv.c: coding style clean-up.
xan.c: coding style clean-up.
mpegvideo.c: code cleanup - first 500 lines.
Conflicts:
Changelog
libavcodec/adpcmenc.c
libavcodec/bmp.c
libavcodec/zmbv.c
libavutil/log.c
libavutil/pixdesc.c
Merged-by: Michael Niedermayer <michaelni@gmx.at>
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Signed-off-by: Ronald S. Bultje <rsbultje@gmail.com>
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* qatar/master:
vf_libopencv: replace opencv/cxtypes.h #include by opencv/cxcore.h
dsputil: remove disabled code
tta: remove disabled code
gxfenc: place variable declarations before statements
x86: Use LOCAL_ALIGNED in mpegvideo_mmx_template
random_seed: use proper #includes
Merged-by: Michael Niedermayer <michaelni@gmx.at>
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Use <> for system headers, add needed math.h, drop unnecessary avutil.h.
Signed-off-by: Mans Rullgard <mans@mansr.com>
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* qatar/master:
Makefile: Include dependencies for test tools, too
Remove a version check in av_log made unnecessary by the big bump.
update last major version increase dates in APIchanges
Reduce picture size for yadif.
oggdec: use av_freep() instead of av_free()
avio: Fix sanity checks in ffurl_read*
libavformat: Free AVFormatContext->streams
libavformat: Make protocols pass URLContext as log context where available
asf: remove commented out code in asf_read_seek
not pulled: libpostproc: Remove crufty code disabled by the big bump.
Reflect 0.7_beta1 release in the Changelog
not pulled: sws: remove disabled cruft.
lavu: remove disabled ff_random_get_seed cruft.
lavu: remove disabled sha1 cruft.
Conflicts:
Changelog
libavutil/sha1.h
Merged-by: Michael Niedermayer <michaelni@gmx.at>
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Signed-off-by: Mans Rullgard <mans@mansr.com>
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Originally committed as revision 24116 to svn://svn.ffmpeg.org/ffmpeg/trunk
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This is clearer than comparing against an unsigned number to force an unsigned
comparison that we need.
Originally committed as revision 24114 to svn://svn.ffmpeg.org/ffmpeg/trunk
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Originally committed as revision 24102 to svn://svn.ffmpeg.org/ffmpeg/trunk
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Originally committed as revision 23932 to svn://svn.ffmpeg.org/ffmpeg/trunk
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Originally committed as revision 23931 to svn://svn.ffmpeg.org/ffmpeg/trunk
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If both /dev/random and /dev/urandom failed to return data, an
uninitialised value might be returned. Since most systems have a
non-blocking /dev/urandom or have /dev/random with similar properties,
the chance of blocking is minimal, and the alternative of returning
non-random data is worse.
Originally committed as revision 23930 to svn://svn.ffmpeg.org/ffmpeg/trunk
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Attempt to read from /dev/urandom and /dev/random with O_NONBLOCK set.
If neither succeeds, proceed with fallbacks.
Originally committed as revision 23903 to svn://svn.ffmpeg.org/ffmpeg/trunk
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Keep an old ff_ named function for binary compatibility until the
next major bump.
Originally committed as revision 23254 to svn://svn.ffmpeg.org/ffmpeg/trunk
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Originally committed as revision 22451 to svn://svn.ffmpeg.org/ffmpeg/trunk
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Originally committed as revision 22450 to svn://svn.ffmpeg.org/ffmpeg/trunk
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Originally committed as revision 17868 to svn://svn.ffmpeg.org/ffmpeg/trunk
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