Katerina Barone-Adesi
e50ae60d46
avcodec/fate-idct8x8: Defined behavior: eliminate negative left-shifts.
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The original code left-shifts negative values, which is undefined
in the C99 specification (the one used during normal FFmpeg compilation).
This change multiplies by (1 << shift), which is functionally equivalent,
but has defined behavior.
With this change, fate-idct8x8 compiled with --fsanitize=undefined works.
Bug-Id: 686
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
The assembly generated by gcc is unchanged by this commit
11 years ago
Diego Biurrun
5d3d39c72e
dsputil: Move fdct function declarations to dct.h
12 years ago
Diego Biurrun
88bd7fdc82
Drop DCTELEM typedef
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It does not help as an abstraction and adds dsputil dependencies.
Signed-off-by: Ronald S. Bultje <rsbultje@gmail.com>
12 years ago
Michael Niedermayer
70d54392f5
lowres2 support.
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The new lowres support is limited to decoders where lowres decoding
is possible in high quality.
I was not able to measure any speed difference, but if one is found
the 2-3 lines that might affect speed can be made compile time conditional
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
13 years ago
Mans Rullgard
2bcbd98459
Remove lowres video decoding
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This feature is complex, of questionable utility, and slows down
normal decoding.
Signed-off-by: Mans Rullgard <mans@mansr.com>
13 years ago
Martin Storsjö
c8e1b2fbc9
libavcodec: Add ff_ prefix to j_rev_dct*
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Signed-off-by: Martin Storsjö <martin@martin.st>
13 years ago
Diego Biurrun
ce33320b30
Remove redundant filename self-references inside files.
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Filenames are brittle across renames and add no useful information.
13 years ago
Diego Biurrun
ba87f0801d
Remove explicit filename from Doxygen @file commands.
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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
Michael Niedermayer
dd08de11f6
Remove unused assignment from j_rev_dct() found by CSA.
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Originally committed as revision 18558 to svn://svn.ffmpeg.org/ffmpeg/trunk
16 years ago
Michael Niedermayer
72619760f0
Remvoe useless assignment found by CSA.
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Originally committed as revision 18551 to svn://svn.ffmpeg.org/ffmpeg/trunk
16 years ago
Diego Biurrun
bad5537e2c
Use full internal pathname in doxygen @file directives.
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Otherwise doxygen complains about ambiguous filenames when files exist
under the same name in different subdirectories.
Originally committed as revision 16912 to svn://svn.ffmpeg.org/ffmpeg/trunk
16 years ago
Diego Biurrun
245976da2a
Use full path for #includes from another directory.
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Originally committed as revision 13098 to svn://svn.ffmpeg.org/ffmpeg/trunk
17 years ago
Diego Biurrun
73c42241b4
Add copyright notice from the Independent JPEG Group instead of referring
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to a README we don't include.
Originally committed as revision 6157 to svn://svn.ffmpeg.org/ffmpeg/trunk
19 years ago
Diego Biurrun
bb270c0896
COSMETICS: tabs --> spaces, some prettyprinting
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Originally committed as revision 4764 to svn://svn.ffmpeg.org/ffmpeg/trunk
19 years ago
Diego Biurrun
115329f160
COSMETICS: Remove all trailing whitespace.
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Originally committed as revision 4749 to svn://svn.ffmpeg.org/ffmpeg/trunk
19 years ago
Michael Niedermayer
f06afd698b
porting optimizations from 4x4 dct to 8x8
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Originally committed as revision 3515 to svn://svn.ffmpeg.org/ffmpeg/trunk
21 years ago
Michael Niedermayer
affbf0435a
optimizing 4x4 idct
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Originally committed as revision 3514 to svn://svn.ffmpeg.org/ffmpeg/trunk
21 years ago
Michael Niedermayer
1aa8c57b4a
1/8 resolution decoding
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Originally committed as revision 3511 to svn://svn.ffmpeg.org/ffmpeg/trunk
21 years ago
Michael Niedermayer
9ca358b951
1/4 resolution decoding
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Originally committed as revision 3509 to svn://svn.ffmpeg.org/ffmpeg/trunk
21 years ago
Michael Niedermayer
178fcca848
1/2 resolution decoding
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Originally committed as revision 3507 to svn://svn.ffmpeg.org/ffmpeg/trunk
21 years ago
Michael Niedermayer
983e3246b7
per file doxy
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Originally committed as revision 1634 to svn://svn.ffmpeg.org/ffmpeg/trunk
22 years ago
Zdenek Kabelac
0c1a9edad4
* UINTX -> uintx_t INTX -> intx_t
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Originally committed as revision 1578 to svn://svn.ffmpeg.org/ffmpeg/trunk
22 years ago
Zdenek Kabelac
cd4af68ad5
* started to cleanup name clashes for onetime compilation
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Originally committed as revision 617 to svn://svn.ffmpeg.org/ffmpeg/trunk
23 years ago
Fabrice Bellard
13b5475264
permuted coefs in normal IDCT to avoid having different cases there
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Originally committed as revision 47 to svn://svn.ffmpeg.org/ffmpeg/trunk
24 years ago
Fabrice Bellard
de6d9b6404
Initial revision
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Originally committed as revision 5 to svn://svn.ffmpeg.org/ffmpeg/trunk
24 years ago