FFmpeg

Commit Graph

Author	SHA1	Message	Date
Måns Rullgård	1429224b04	Move FFT parts from dsputil.h to fft.h 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. 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 Originally committed as revision 19939 to svn://svn.ffmpeg.org/ffmpeg/trunk	15 years ago
Måns Rullgård	01b2214758	Merge FFTContext and MDCTContext 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 that FF_ELEMS(ff_sine_windows[x]) == 1 << x. Fix issue 1384. Originally committed as revision 19862 to svn://svn.ffmpeg.org/ffmpeg/trunk	15 years ago
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	15 years ago
Reimar Döffinger	c55e5b5fee	ff_sine_windows table contains only constant data, too. Originally committed as revision 19785 to svn://svn.ffmpeg.org/ffmpeg/trunk	15 years ago
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	16 years ago
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	16 years ago
Diego Biurrun	f0d5437275	Remove documentation of non-existing function parameters. 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. 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. 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. 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 Originally committed as revision 16533 to svn://svn.ffmpeg.org/ffmpeg/trunk	16 years ago
Michael Niedermayer	71375e0500	Try to fix wma regression. Originally committed as revision 15261 to svn://svn.ffmpeg.org/ffmpeg/trunk	16 years ago
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	16 years ago
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	16 years ago
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	16 years ago
Loren Merritt	d46ac5bfde	mdct wrapper function to match fft Originally committed as revision 14703 to svn://svn.ffmpeg.org/ffmpeg/trunk	16 years ago
Loren Merritt	0a570e826d	remove mdct tmp buffer Originally committed as revision 14702 to svn://svn.ffmpeg.org/ffmpeg/trunk	16 years ago
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	16 years ago
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	16 years ago
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	17 years ago
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	17 years ago
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	17 years ago
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	17 years ago
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	17 years ago
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	18 years ago
Diego Biurrun	5509bffa88	Update licensing information: The FSF changed postal address. Originally committed as revision 4842 to svn://svn.ffmpeg.org/ffmpeg/trunk	19 years ago
Diego Biurrun	115329f160	COSMETICS: Remove all trailing whitespace. 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>) Originally committed as revision 2882 to svn://svn.ffmpeg.org/ffmpeg/trunk	21 years ago
Michael Niedermayer	983e3246b7	per file doxy Originally committed as revision 1634 to svn://svn.ffmpeg.org/ffmpeg/trunk	22 years ago
Fabrice Bellard	d9823692f5	use av_malloc instead of malloc Originally committed as revision 1412 to svn://svn.ffmpeg.org/ffmpeg/trunk	22 years ago
Fabrice Bellard	82696beed3	avoid name clash 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 Originally committed as revision 1088 to svn://svn.ffmpeg.org/ffmpeg/trunk	22 years ago

35 Commits (19fcd66c31b880487e477dd45501eb91b9c9fdfe)