generic-library/ffmpeg
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity
22,966 Commits 24 Branches 241 Tags 173 MiB
36b54927fd
Commit Graph

34 Commits

Author SHA1 Message Date
Reimar Döffinger
14b8607065 Add support for hard-coded MDCT-related ff_sine_windows tables. 
Originally committed as revision 21108 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2010-01-09 13:28:04 +00:00
Måns Rullgård
94274b82f6 Allow arch-specific mdct code to request interleaving of cos/sin tables 
Originally committed as revision 19939 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2009-09-21 02:56:06 +00:00
Måns Rullgård
01b2214758 Merge FFTContext and MDCTContext 
Originally committed as revision 19931 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2009-09-20 17:30:20 +00:00
Vitor Sessak
6776061b04 Add two more sizes to ff_sine_windows[] and also pad it with NULLs so 
that FF_ELEMS(ff_sine_windows[x]) == 1 << x.

Fix issue 1384.

Originally committed as revision 19862 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2009-09-15 16:18:16 +00:00
Måns Rullgård
46c32e2654 Prepare for optimised forward MDCT implementations 
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
 2009-09-11 02:24:19 +00:00
Reimar Döffinger
c55e5b5fee ff_sine_windows table contains only constant data, too. 
Originally committed as revision 19785 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2009-09-06 08:56:10 +00:00
Siarhei Siamashka
7d485f165f Support for getting (i)MDCT output multiplied by a constant scaling factor. 
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
 2009-05-16 14:17:08 +00:00
Michael Niedermayer
b278a1ed1c Remove useless += from ff_imdct_half_c() found by CSA. 
Originally committed as revision 18578 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2009-04-17 18:12:00 +00:00
Diego Biurrun
f0d5437275 Remove documentation of non-existing function parameters. 
Originally committed as revision 16994 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2009-02-04 20:43:17 +00:00
Alex Converse
5363c43ea8 Add av_cold attributes to *_init and *_end functions. 
Originally committed as revision 16980 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2009-02-03 23:09:00 +00:00
Diego Biurrun
bad5537e2c Use full internal pathname in doxygen @file directives. 
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
 2009-02-01 02:00:19 +00:00
Diego Biurrun
406792e7b0 cosmetics: Remove pointless period after copyright statement non-sentences. 
Originally committed as revision 16684 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2009-01-19 15:46:40 +00:00
Benjamin Larsson
336c2ca585 Add size that is needed for the wmapro codec 
Originally committed as revision 16533 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2009-01-11 10:40:05 +00:00
Michael Niedermayer
71375e0500 Try to fix wma regression. 
Originally committed as revision 15261 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2008-09-08 13:37:12 +00:00
Aurelien Jacobs
67f718bd11 Add a temp variable to ff_sine_window_init() to match the way wma.c computed 
window before r14757. This fixes a regression introduced by r14757 on amd64.

Originally committed as revision 14982 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2008-08-26 19:40:53 +00:00
Robert Swain
47698b83fd The ff_sine_#[] should be aligned as they will commonly be used in dsputil 
functions

Originally committed as revision 14767 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2008-08-14 22:12:19 +00:00
Robert Swain
69fc4da360 Add declarations for the sine tables used in wma.c (half window sizes: 128, 
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
 2008-08-14 14:40:16 +00:00
Loren Merritt
d46ac5bfde mdct wrapper function to match fft 
Originally committed as revision 14703 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2008-08-12 00:38:30 +00:00
Loren Merritt
0a570e826d remove mdct tmp buffer 
Originally committed as revision 14702 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2008-08-12 00:36:36 +00:00
Loren Merritt
e8dd7b0c9a remove a float->double->float conversion. 
1.8x faster imdct_c with fpmath=sse, no change with x87

Originally committed as revision 14701 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2008-08-12 00:34:08 +00:00
Loren Merritt
46803f4f67 optimize imdct_half: 
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
 2008-08-12 00:33:34 +00:00
Loren Merritt
b9fa32082c exploit mdct symmetry 
2% faster vorbis on conroe, k8. 7% on celeron.

Originally committed as revision 14207 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2008-07-13 15:03:58 +00:00
Robert Swain
9146e4d61c Add generic ff_sine_window_init function and implement in codecs appropriately 
Originally committed as revision 13888 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2008-06-22 15:12:27 +00:00
Måns Rullgård
77f11d8a4c improve precision in mdct.c using double for some temporaries 
Originally committed as revision 12457 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2008-03-16 13:15:42 +00:00
Robert Swain
3ed546fe52 Add variable alpha and size of half window for Kaiser-Bessel Derived window 
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
 2008-01-13 11:02:08 +00:00
Robert Swain
4eb7a735cb Make the Kaiser-Bessel window generator a common function 
Patch by Robert Swain, robert d swain a gmail d com

Originally committed as revision 11514 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2008-01-12 11:11:19 +00:00
Diego Biurrun
b78e7197a8 Change license headers to say 'FFmpeg' instead of 'this program/this library' 
and fix GPL/LGPL version mismatches.

Originally committed as revision 6577 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2006-10-07 15:30:46 +00:00
Diego Biurrun
5509bffa88 Update licensing information: The FSF changed postal address. 
Originally committed as revision 4842 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2006-01-12 22:43:26 +00:00
Diego Biurrun
115329f160 COSMETICS: Remove all trailing whitespace. 
Originally committed as revision 4749 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2005-12-17 18:14:38 +00:00
Gildas Bazin
68951ecf0c fft_*() renamed into ff_fft_*() patch by (Gildas Bazin <gbazin at altern dot org>) 
Originally committed as revision 2882 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2004-03-13 21:43:24 +00:00
Michael Niedermayer
983e3246b7 per file doxy 
Originally committed as revision 1634 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2003-03-06 11:32:04 +00:00
Fabrice Bellard
d9823692f5 use av_malloc instead of malloc 
Originally committed as revision 1412 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2003-01-07 17:44:21 +00:00
Fabrice Bellard
82696beed3 avoid name clash 
Originally committed as revision 1104 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2002-10-29 22:26:01 +00:00
Fabrice Bellard
bb6f569072 new generic FFT/MDCT code for audio codecs 
Originally committed as revision 1088 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2002-10-28 00:34:08 +00:00