Måns Rullgård
dd93649b71
Remove VLA in ff_kbd_window_init, limit window size to 1024
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Originally committed as revision 23755 to svn://svn.ffmpeg.org/ffmpeg/trunk
15 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
Måns Rullgård
2ed6f39944
Replace many includes of libavutil/common.h with what is actually needed
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This reduces the number of false dependencies on header files and
speeds up compilation.
Originally committed as revision 22407 to svn://svn.ffmpeg.org/ffmpeg/trunk
15 years ago
Måns Rullgård
1429224b04
Move FFT parts from dsputil.h to fft.h
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Originally committed as revision 22235 to svn://svn.ffmpeg.org/ffmpeg/trunk
15 years ago
Reimar Döffinger
14b8607065
Add support for hard-coded MDCT-related ff_sine_windows tables.
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Originally committed as revision 21108 to svn://svn.ffmpeg.org/ffmpeg/trunk
15 years ago
Måns Rullgård
94274b82f6
Allow arch-specific mdct code to request interleaving of cos/sin tables
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Originally committed as revision 19939 to svn://svn.ffmpeg.org/ffmpeg/trunk
15 years ago
Måns Rullgård
01b2214758
Merge FFTContext and MDCTContext
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Originally committed as revision 19931 to svn://svn.ffmpeg.org/ffmpeg/trunk
15 years ago
Vitor Sessak
6776061b04
Add two more sizes to ff_sine_windows[] and also pad it with NULLs so
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that FF_ELEMS(ff_sine_windows[x]) == 1 << x.
Fix issue 1384.
Originally committed as revision 19862 to svn://svn.ffmpeg.org/ffmpeg/trunk
16 years ago
Måns Rullgård
46c32e2654
Prepare for optimised forward MDCT implementations
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This adds a function pointer for forward MDCT to FFTContext and
initialises it with the existing C function. ff_calc_mdct() is
changed to an inline function calling the selected version as
done for other fft/mdct functions.
Originally committed as revision 19818 to svn://svn.ffmpeg.org/ffmpeg/trunk
16 years ago
Reimar Döffinger
c55e5b5fee
ff_sine_windows table contains only constant data, too.
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Originally committed as revision 19785 to svn://svn.ffmpeg.org/ffmpeg/trunk
16 years ago
Siarhei Siamashka
7d485f165f
Support for getting (i)MDCT output multiplied by a constant scaling factor.
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Scaling (i)MDCT output has no runtime overhead and can be used to improve
performance of audio codecs. All the changes are only needed in
'ff_mdct_init' function and slow down initialization a bit.
Originally committed as revision 18855 to svn://svn.ffmpeg.org/ffmpeg/trunk
16 years ago
Michael Niedermayer
b278a1ed1c
Remove useless += from ff_imdct_half_c() found by CSA.
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Originally committed as revision 18578 to svn://svn.ffmpeg.org/ffmpeg/trunk
16 years ago
Diego Biurrun
f0d5437275
Remove documentation of non-existing function parameters.
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Originally committed as revision 16994 to svn://svn.ffmpeg.org/ffmpeg/trunk
16 years ago
Alex Converse
5363c43ea8
Add av_cold attributes to *_init and *_end functions.
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Originally committed as revision 16980 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
406792e7b0
cosmetics: Remove pointless period after copyright statement non-sentences.
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Originally committed as revision 16684 to svn://svn.ffmpeg.org/ffmpeg/trunk
16 years ago
Benjamin Larsson
336c2ca585
Add size that is needed for the wmapro codec
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Originally committed as revision 16533 to svn://svn.ffmpeg.org/ffmpeg/trunk
16 years ago
Michael Niedermayer
71375e0500
Try to fix wma regression.
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Originally committed as revision 15261 to svn://svn.ffmpeg.org/ffmpeg/trunk
17 years ago
Aurelien Jacobs
67f718bd11
Add a temp variable to ff_sine_window_init() to match the way wma.c computed
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window before r14757. This fixes a regression introduced by r14757 on amd64.
Originally committed as revision 14982 to svn://svn.ffmpeg.org/ffmpeg/trunk
17 years ago
Robert Swain
47698b83fd
The ff_sine_#[] should be aligned as they will commonly be used in dsputil
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functions
Originally committed as revision 14767 to svn://svn.ffmpeg.org/ffmpeg/trunk
17 years ago
Robert Swain
69fc4da360
Add declarations for the sine tables used in wma.c (half window sizes: 128,
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256, 512, 1024 and 2048) to mdct.c. Make them accessible via dsputil.h. Make
wma.c use these shared tables.
Originally committed as revision 14758 to svn://svn.ffmpeg.org/ffmpeg/trunk
17 years ago
Loren Merritt
d46ac5bfde
mdct wrapper function to match fft
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Originally committed as revision 14703 to svn://svn.ffmpeg.org/ffmpeg/trunk
17 years ago
Loren Merritt
0a570e826d
remove mdct tmp buffer
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Originally committed as revision 14702 to svn://svn.ffmpeg.org/ffmpeg/trunk
17 years ago
Loren Merritt
e8dd7b0c9a
remove a float->double->float conversion.
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1.8x faster imdct_c with fpmath=sse, no change with x87
Originally committed as revision 14701 to svn://svn.ffmpeg.org/ffmpeg/trunk
17 years ago
Loren Merritt
46803f4f67
optimize imdct_half:
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remove tmp buffer.
skip fft reinterleave pass, leaving data in a format more convenient for simd.
merge post-rotate with post-reorder.
Originally committed as revision 14700 to svn://svn.ffmpeg.org/ffmpeg/trunk
17 years ago
Loren Merritt
b9fa32082c
exploit mdct symmetry
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2% faster vorbis on conroe, k8. 7% on celeron.
Originally committed as revision 14207 to svn://svn.ffmpeg.org/ffmpeg/trunk
17 years ago
Robert Swain
9146e4d61c
Add generic ff_sine_window_init function and implement in codecs appropriately
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Originally committed as revision 13888 to svn://svn.ffmpeg.org/ffmpeg/trunk
17 years ago
Måns Rullgård
77f11d8a4c
improve precision in mdct.c using double for some temporaries
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Originally committed as revision 12457 to svn://svn.ffmpeg.org/ffmpeg/trunk
17 years ago
Robert Swain
3ed546fe52
Add variable alpha and size of half window for Kaiser-Bessel Derived window
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generation. Hard code Bessel I0 approximation iterations to 50.
See thread for discussion:
[FFmpeg-devel] [PATCH] Move Kaiser-Bessel Derived window to mdct.c
Started on the 2008/01/10
Originally committed as revision 11520 to svn://svn.ffmpeg.org/ffmpeg/trunk
17 years ago
Robert Swain
4eb7a735cb
Make the Kaiser-Bessel window generator a common function
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Patch by Robert Swain, robert d swain a gmail d com
Originally committed as revision 11514 to svn://svn.ffmpeg.org/ffmpeg/trunk
17 years ago
Diego Biurrun
b78e7197a8
Change license headers to say 'FFmpeg' instead of 'this program/this library'
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and fix GPL/LGPL version mismatches.
Originally committed as revision 6577 to svn://svn.ffmpeg.org/ffmpeg/trunk
18 years ago
Diego Biurrun
5509bffa88
Update licensing information: The FSF changed postal address.
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Originally committed as revision 4842 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
Gildas Bazin
68951ecf0c
fft_*() renamed into ff_fft_*() patch by (Gildas Bazin <gbazin at altern dot org>)
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Originally committed as revision 2882 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
Fabrice Bellard
d9823692f5
use av_malloc instead of malloc
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Originally committed as revision 1412 to svn://svn.ffmpeg.org/ffmpeg/trunk
22 years ago
Fabrice Bellard
82696beed3
avoid name clash
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Originally committed as revision 1104 to svn://svn.ffmpeg.org/ffmpeg/trunk
22 years ago
Fabrice Bellard
bb6f569072
new generic FFT/MDCT code for audio codecs
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Originally committed as revision 1088 to svn://svn.ffmpeg.org/ffmpeg/trunk
22 years ago