e34fe61bf4
avutil/softfloat: Add FLOAT_MIN
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Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
2017-11-05 22:13:16 +01:00
6019d721d4
avutil/softfloat: Fix sign error in and improve documentation of av_int2sf()
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Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
2017-06-04 23:41:08 +02:00
277e397eb5
avutil/softfloat: Fix overflow in av_div_sf()
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Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
2017-05-06 23:23:39 +02:00
35f3df0d76
avutil/softfloat: Fix multiple runtime error: left shift of negative value -8
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Fixes: 1352/clusterfuzz-testcase-minimized-5757565017260032
Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/targets/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
2017-05-06 00:33:19 +02:00
79aa2ff199
avutil/softfloat: use ldexp(), fixes undefined shift
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Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
2017-05-02 22:55:44 +02:00
2d6f46d801
softfloat: decrease MIN_EXP to cover full float range
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floats are not necessarily normalized, so a normalized softfloat needs
MIN_EXP lowered by 23 to cover that range.
Reviewed-by: Michael Niedermayer <michael@niedermayer.cc>
Signed-off-by: Andreas Cadhalpun <Andreas.Cadhalpun@googlemail.com>
2016-11-25 01:23:48 +01:00
0edd569466
softfloat: handle -INT_MAX correctly
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This is similar to commit 9ac61e73d0
2016-11-14 22:57:07 +01:00
52ca24bdd2
avutil/softfloat: Improve doxy for av_sub_sf() and av_sf2int()
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Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
2016-05-29 14:45:07 +02:00
d1520a6cfd
avutil/softfloat: Document public constants and a few public functions
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Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
2016-05-28 14:24:20 +02:00
5e8b9e746f
avutil/softfloat: Assert that the exponent did not overflow the legal range in av_normalize1_sf()
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Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
2015-12-11 13:39:21 +01:00
9f4a41bf99
avutil/softfloat: use abort() instead of av_assert0(0)
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Fixes compilation of host tool aacps_fixed_tablegen.
Reviewed-by: Michael Niedermayer <michael@niedermayer.cc>
Signed-off-by: James Almer <jamrial@gmail.com>
2015-11-10 13:37:24 -03:00
9ac61e73d0
softfloat: handle INT_MIN correctly in av_int2sf
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Otherwise v=INT_MIN doesn't get normalized and thus triggers av_assert2
in other functions.
Reviewed-by: Michael Niedermayer <michael@niedermayer.cc>
Signed-off-by: Andreas Cadhalpun <Andreas.Cadhalpun@googlemail.com>
2015-11-08 21:06:40 +01:00
f3866a14c3
softfloat: assert when the argument of av_sqrt_sf is negative
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The correct result can't be expressed in SoftFloat.
Currently it returns a random value from an out of bounds read.
Reviewed-by: Michael Niedermayer <michael@niedermayer.cc>
Signed-off-by: Andreas Cadhalpun <Andreas.Cadhalpun@googlemail.com>
2015-11-08 21:05:21 +01:00
05b05a7a84
avutil/softfloat: Fix av_gt_sf() with large exponents try #2
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Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
2015-11-08 15:03:28 +01:00
cee3c9d29a
avutil/softfloat: Fix overflows in shifts in av_cmp_sf() and av_gt_sf()
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Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
2015-11-08 14:54:51 +01:00
046218b212
avutil/softfloat: Fix exponent underflow in av_div_sf()
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Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
2015-11-08 14:23:38 +01:00
a1e3303fc0
avutil/softfloat: Fix exponent underflow in av_mul_sf()
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Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
2015-11-08 14:23:38 +01:00
4135a2bfd6
avutil/softfloat: Fix typo in av_mul_sf() doxy
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Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
2015-11-08 14:23:37 +01:00
4b6ad23609
Revert "avutil/softfloat: Check for MIN_EXP in av_sqrt_sf()"
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This case should not be possible if the input has a exponent within
the valid range
This reverts commit 0269fb11e3
2015-11-08 14:23:37 +01:00
0269fb11e3
avutil/softfloat: Check for MIN_EXP in av_sqrt_sf()
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Otherwise the exponent could eventually underflow
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
2015-11-08 13:39:06 +01:00
107db5abf3
avutil/softfloat: Correctly set the exponent for 0.0 in av_sqrt_sf()
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Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
2015-11-08 13:39:06 +01:00
a66b243d52
avutil/softfloat: FLOAT_0 should use MIN_EXP
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Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
2015-11-08 03:57:02 +01:00
a176bbc873
avutil/softfloat: move av_sincos_sf() back to header
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Fixes compilation of host tool aacps_fixed_tablegen
Reviewed-by: Michael Niedermayer <michael@niedermayer.cc>
Signed-off-by: James Almer <jamrial@gmail.com>
2015-07-22 23:12:21 -03:00
f85bc147fb
avcodec: Implementation of AAC_fixed_decoder (SBR-module)
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Add fixed poind code.
Signed-off-by: Nedeljko Babic <nedeljko.babic@imgtec.com>
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
2015-07-20 17:20:16 +02:00
20abb1afe5
softfloat: make av_div_sf() inline
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Removes a defined but not used warning on files including softfloat.h
Reviewed-by: Michael Niedermayer <michaelni@gmx.at>
Signed-off-by: James Almer <jamrial@gmail.com>
2015-06-13 22:28:39 -03:00
daf1158d77
avutil/softfloat: Move av_sf2double() to header
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It was not intended to be a static private function
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
2015-06-11 16:16:38 +02:00
af8d63e756
avutil/softfloat: Fix alternative implementation of av_normalize1_sf()
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Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
2015-06-05 17:40:16 +02:00
6690ca22b3
avutil/softfloat: Fix alternative implementation of av_normalize_sf()
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Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
2015-06-05 17:40:16 +02:00
d3585c53de
avutil/softfloat: Move av_sincos_sf() from header to c file
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The function is quite big and trigonometric functions should not really
be used in speed critical code
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
2015-06-05 13:42:05 +02:00
c7ce16e716
avutil/softfloat: Fix thresholds in av_normalize_sf()
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Found-by: Nedeljko Babic <Nedeljko.Babic@imgtec.com>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
2015-06-05 12:56:12 +02:00
7131aba916
libavutil/softfloat: Fix av_normalize1_sf bias.
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av_normalize1_sf doesn't properly address border case when mantis is
exactly -0x40000000.
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
2015-06-04 17:20:03 +02:00
1fae268307
libavutil/softfloat: Add functions.
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Functions av_gt_sf, av_sqrt_sf and av_sincos_sf added to softfloat
Signed-off-by: Nedeljko Babic <nedeljko.babic@imgtec.com>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
2015-04-30 15:05:12 +02:00
7bab281475
libavutil/softfloat: Added av_normalize_sf in av_add_sf
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This will normalize sums for which mantissa is smaller than the lower boundary
(needed for implementation of fixed point aac decoder).
Signed-off-by: Nedeljko Babic <nedeljko.babic@imgtec.com>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
2015-04-30 14:53:09 +02:00
a1c7fe431c
libavutil/softfloat: exponent adjusted for aac fixed point dec
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Exponent usage and calculation in softfloat adjusted to the format used in
implementation of fixed point aac decoder.
Signed-off-by: Nedeljko Babic <nedeljko.babic@imgtec.com>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
2015-04-30 14:20:28 +02:00
a3110beebd
avutil/softfloat: document av_int2sf()
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Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
2015-04-25 14:51:02 +02:00
f4ccf38902
libavutil/softfloat: Change order of fields in SoftFloat structure.
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Softfloat will be used in implementation of AAC fixed point decoder.
This change is needed in order to more easily integrate ffmpegs softfloat in
already developed algorithm for AAC.
Signed-off-by: Nedeljko Babic <nedeljko.babic@imgtec.com>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
2015-04-15 18:53:55 +02:00
171d971dbf
avutil/softfloat: Fix undefined shift in av_add_sf()
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Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
2014-10-10 19:36:12 +02:00
99afec08f8
avutil/softfloat: add some asserts
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Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
2014-10-09 17:02:59 +02:00
44198a728d
avutil/softfloat: Fix dependence on signed overflow in av_normalize1_sf()
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Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
2014-10-09 16:52:56 +02:00
89c9ff504b
spelling/grammar/consistency review part I
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Originally committed as revision 16840 to svn://svn.ffmpeg.org/ffmpeg/trunk
2009-01-28 00:16:05 +00:00
987903826b
Globally rename the header inclusion guard names.
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Consistently apply this rule: the guard name is obtained from the
filename by stripping the leading "lib", converting '/' and '.' to
'_' and uppercasing the resulting name. Guard names in the root
directory have to be prefixed by "FFMPEG_".
Originally committed as revision 15120 to svn://svn.ffmpeg.org/ffmpeg/trunk
2008-08-31 07:39:47 +00:00
ca74c0a180
cosmetics: Fix two common typos: wont --> will not, lets --> let us.
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Originally committed as revision 14372 to svn://svn.ffmpeg.org/ffmpeg/trunk
2008-07-24 17:09:28 +00:00
3540b950ec
add missing #include "common.h" to libavutil headers
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Originally committed as revision 12502 to svn://svn.ffmpeg.org/ffmpeg/trunk
2008-03-19 08:47:31 +00:00
85074d3c93
Reapply r12489: Add pure, const and malloc attributes to proper functions
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in libavutil.
Fix a compilation failure in r12489.
Originally committed as revision 12498 to svn://svn.ffmpeg.org/ffmpeg/trunk
2008-03-19 06:17:43 +00:00
2119bb8f51
revert r12489.
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Originally committed as revision 12490 to svn://svn.ffmpeg.org/ffmpeg/trunk
2008-03-18 16:29:47 +00:00
6544f48f03
Pure, const and malloc attributes to libavutil.
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Patch by Zuxy Meng: zuxy meng gmail com
Original thread:
[FFmpeg-devel] [PATCH] Pure, const and malloc attributes to libavutil
Date: 03/18/2008 6:09 AM
Originally committed as revision 12489 to svn://svn.ffmpeg.org/ffmpeg/trunk
2008-03-18 15:27:15 +00:00
5b21bdabe4
Add FFMPEG_ prefix to all multiple inclusion guards.
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Originally committed as revision 10765 to svn://svn.ffmpeg.org/ffmpeg/trunk
2007-10-17 09:37:46 +00:00
e5a389a1b7
license header consistency cosmetics
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Originally committed as revision 9484 to svn://svn.ffmpeg.org/ffmpeg/trunk
2007-07-05 10:40:25 +00:00
efb775777f
add a comment to indicate which #endif belong to which #define
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Originally committed as revision 9356 to svn://svn.ffmpeg.org/ffmpeg/trunk
2007-06-17 18:59:28 +00:00
699b3f99d0
add multiple inclusion guards to headers
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Originally committed as revision 9345 to svn://svn.ffmpeg.org/ffmpeg/trunk
2007-06-17 00:01:30 +00:00
Michael Niedermayer
Andreas Cadhalpun
James Almer
Djordje Pesut
Michael Niedermayer
Nedeljko Babic
Diego Biurrun
Stefano Sabatini
Måns Rullgård
Zuxy Meng
Benoit Fouet
Guillaume Poirier