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* Fixed-point FFT and MDCTMans Rullgard2011-03-31
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* Move sine windows to a separate fileMans Rullgard2011-03-20
| | | | | | | These windows do not really belong in fft/mdct files and were easily confused with the similarly named tables used by rdft. Signed-off-by: Mans Rullgard <mans@mansr.com>
* Move ff_kbd_window_init() to a separate fileMans Rullgard2011-03-19
| | | | | | | This function is not tightly coupled to mdct, and it's in the way of making a fixed-point mdct implementation. Signed-off-by: Mans Rullgard <mans@mansr.com>
* fft: remove inline wrappers for function pointersMans Rullgard2011-03-19
| | | | | | | This removes the rather pointless wrappers (one not even inline) for calling the fft_calc and related function pointers. Signed-off-by: Mans Rullgard <mans@mansr.com>
* Replace FFmpeg with Libav in licence headersMans Rullgard2011-03-19
| | | | Signed-off-by: Mans Rullgard <mans@mansr.com>
* mdct: remove unnecessary multiplicationYoung Han Lee2011-02-17
| | | | 3*n4 was already calculated in n3.
* FFT: factor a shuffle out of the inner loop and merge it into fft_permute.Loren Merritt2011-02-13
| | | | | | 6% faster SSE FFT on Conroe, 2.5% on Penryn. Signed-off-by: Janne Grunau <janne-ffmpeg@jannau.net>
* Remove VLA in ff_kbd_window_init, limit window size to 1024Måns Rullgård2010-06-24
| | | | Originally committed as revision 23755 to svn://svn.ffmpeg.org/ffmpeg/trunk
* Remove explicit filename from Doxygen @file commands.Diego Biurrun2010-04-20
| | | | | | | | 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
* Replace many includes of libavutil/common.h with what is actually neededMåns Rullgård2010-03-09
| | | | | | | 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
* Move FFT parts from dsputil.h to fft.hMåns Rullgård2010-03-06
| | | | Originally committed as revision 22235 to svn://svn.ffmpeg.org/ffmpeg/trunk
* Add support for hard-coded MDCT-related ff_sine_windows tables.Reimar Döffinger2010-01-09
| | | | Originally committed as revision 21108 to svn://svn.ffmpeg.org/ffmpeg/trunk
* Allow arch-specific mdct code to request interleaving of cos/sin tablesMåns Rullgård2009-09-21
| | | | Originally committed as revision 19939 to svn://svn.ffmpeg.org/ffmpeg/trunk
* Merge FFTContext and MDCTContextMåns Rullgård2009-09-20
| | | | Originally committed as revision 19931 to svn://svn.ffmpeg.org/ffmpeg/trunk
* Add two more sizes to ff_sine_windows[] and also pad it with NULLs soVitor Sessak2009-09-15
| | | | | | | | that FF_ELEMS(ff_sine_windows[x]) == 1 << x. Fix issue 1384. Originally committed as revision 19862 to svn://svn.ffmpeg.org/ffmpeg/trunk
* Prepare for optimised forward MDCT implementationsMåns Rullgård2009-09-11
| | | | | | | | | 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
* ff_sine_windows table contains only constant data, too.Reimar Döffinger2009-09-06
| | | | Originally committed as revision 19785 to svn://svn.ffmpeg.org/ffmpeg/trunk
* Support for getting (i)MDCT output multiplied by a constant scaling factor.Siarhei Siamashka2009-05-16
| | | | | | | | 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
* Remove useless += from ff_imdct_half_c() found by CSA.Michael Niedermayer2009-04-17
| | | | Originally committed as revision 18578 to svn://svn.ffmpeg.org/ffmpeg/trunk
* Remove documentation of non-existing function parameters.Diego Biurrun2009-02-04
| | | | Originally committed as revision 16994 to svn://svn.ffmpeg.org/ffmpeg/trunk
* Add av_cold attributes to *_init and *_end functions.Alex Converse2009-02-03
| | | | Originally committed as revision 16980 to svn://svn.ffmpeg.org/ffmpeg/trunk
* Use full internal pathname in doxygen @file directives.Diego Biurrun2009-02-01
| | | | | | | 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
* cosmetics: Remove pointless period after copyright statement non-sentences.Diego Biurrun2009-01-19
| | | | Originally committed as revision 16684 to svn://svn.ffmpeg.org/ffmpeg/trunk
* Add size that is needed for the wmapro codecBenjamin Larsson2009-01-11
| | | | Originally committed as revision 16533 to svn://svn.ffmpeg.org/ffmpeg/trunk
* Try to fix wma regression.Michael Niedermayer2008-09-08
| | | | Originally committed as revision 15261 to svn://svn.ffmpeg.org/ffmpeg/trunk
* Add a temp variable to ff_sine_window_init() to match the way wma.c computedAurelien Jacobs2008-08-26
| | | | | | window before r14757. This fixes a regression introduced by r14757 on amd64. Originally committed as revision 14982 to svn://svn.ffmpeg.org/ffmpeg/trunk
* The ff_sine_#[] should be aligned as they will commonly be used in dsputilRobert Swain2008-08-14
| | | | | | functions Originally committed as revision 14767 to svn://svn.ffmpeg.org/ffmpeg/trunk
* Add declarations for the sine tables used in wma.c (half window sizes: 128,Robert Swain2008-08-14
| | | | | | | 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
* mdct wrapper function to match fftLoren Merritt2008-08-12
| | | | Originally committed as revision 14703 to svn://svn.ffmpeg.org/ffmpeg/trunk
* remove mdct tmp bufferLoren Merritt2008-08-12
| | | | Originally committed as revision 14702 to svn://svn.ffmpeg.org/ffmpeg/trunk
* remove a float->double->float conversion.Loren Merritt2008-08-12
| | | | | | 1.8x faster imdct_c with fpmath=sse, no change with x87 Originally committed as revision 14701 to svn://svn.ffmpeg.org/ffmpeg/trunk
* optimize imdct_half:Loren Merritt2008-08-12
| | | | | | | | 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
* exploit mdct symmetryLoren Merritt2008-07-13
| | | | | | 2% faster vorbis on conroe, k8. 7% on celeron. Originally committed as revision 14207 to svn://svn.ffmpeg.org/ffmpeg/trunk
* Add generic ff_sine_window_init function and implement in codecs appropriatelyRobert Swain2008-06-22
| | | | Originally committed as revision 13888 to svn://svn.ffmpeg.org/ffmpeg/trunk
* improve precision in mdct.c using double for some temporariesMåns Rullgård2008-03-16
| | | | Originally committed as revision 12457 to svn://svn.ffmpeg.org/ffmpeg/trunk
* Add variable alpha and size of half window for Kaiser-Bessel Derived windowRobert Swain2008-01-13
| | | | | | | | | | 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
* Make the Kaiser-Bessel window generator a common functionRobert Swain2008-01-12
| | | | | | Patch by Robert Swain, robert d swain a gmail d com Originally committed as revision 11514 to svn://svn.ffmpeg.org/ffmpeg/trunk
* Change license headers to say 'FFmpeg' instead of 'this program/this library'Diego Biurrun2006-10-07
| | | | | | and fix GPL/LGPL version mismatches. Originally committed as revision 6577 to svn://svn.ffmpeg.org/ffmpeg/trunk
* Update licensing information: The FSF changed postal address.Diego Biurrun2006-01-12
| | | | Originally committed as revision 4842 to svn://svn.ffmpeg.org/ffmpeg/trunk
* COSMETICS: Remove all trailing whitespace.Diego Biurrun2005-12-17
| | | | Originally committed as revision 4749 to svn://svn.ffmpeg.org/ffmpeg/trunk
* fft_*() renamed into ff_fft_*() patch by (Gildas Bazin <gbazin at altern dot ↵Gildas Bazin2004-03-13
| | | | | | org>) Originally committed as revision 2882 to svn://svn.ffmpeg.org/ffmpeg/trunk
* per file doxyMichael Niedermayer2003-03-06
| | | | Originally committed as revision 1634 to svn://svn.ffmpeg.org/ffmpeg/trunk
* use av_malloc instead of mallocFabrice Bellard2003-01-07
| | | | Originally committed as revision 1412 to svn://svn.ffmpeg.org/ffmpeg/trunk
* avoid name clashFabrice Bellard2002-10-29
| | | | Originally committed as revision 1104 to svn://svn.ffmpeg.org/ffmpeg/trunk
* new generic FFT/MDCT code for audio codecsFabrice Bellard2002-10-28
Originally committed as revision 1088 to svn://svn.ffmpeg.org/ffmpeg/trunk
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