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8 Commits

Author SHA1 Message Date
Reimar Döffinger
1ffc6e8327 Add ff_init_ff_cos_tabs function and use it in rdft.c to ensure that the 
necessary ff_cos_tabs tables are initialized.
Fixes issue 1507 (QDM2 broken since r20237 without hardcoded tables).

Originally committed as revision 20464 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2009-11-05 18:29:06 +00:00
Reimar Döffinger
223217746c Pad ff_cos_tabs and ff_sin_tabs so that index n points to the table for n bits. 
While this "wastes" up to 2x32 bytes it makes the code slightly simpler and
less confusing.

Originally committed as revision 20449 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2009-11-04 17:30:23 +00:00
Reimar Döffinger
75df2edbb9 Add support for hardcoded ff_sin_* tables. 
Originally committed as revision 20244 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2009-10-15 18:04:55 +00:00
Reimar Döffinger
4ee726b670 Move/add COSTABLE/SINTABLE macros to dsputil to add extern definitions 
for ff_cos_* and ff_sin_* without introducing too much code duplication.

Originally committed as revision 20243 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2009-10-15 17:55:51 +00:00
Reimar Döffinger
aafd659518 Do not initialize ff_cos_* tables again in rdft_init, they are already 
initialized by ff_fft_init and using different code can result in slightly
different values, in addition it crashes when the tables are hardcoded.
On amd64 this slightly changes qdm2 output.

Originally committed as revision 20237 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2009-10-15 11:50:32 +00:00
Reimar Döffinger
f470fff323 The pointers in ff_sin_tabs themselves are constant, so mark them accordingly. 
Originally committed as revision 19783 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2009-09-06 08:50:20 +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
Alex Converse
6860254044 Add the rdft family of transforms (fft/ifft of an all real sequence) to dsputil. 
Originally committed as revision 16864 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2009-01-30 20:15:48 +00:00