FFmpeg

Commit Graph

Author	SHA1	Message	Date
Justin Ruggles	2f37321abc	iirfilter: fix biquad filter coefficients. The current filter implementation should only have the cx coefficients divided by gain in order to give the correct output scale.	14 years ago
Justin Ruggles	a26d2b4bc8	Fix compilation of iirfilter-test.	14 years ago
Mans Rullgard	2912e87a6c	Replace FFmpeg with Libav in licence headers Signed-off-by: Mans Rullgard <mans@mansr.com>	14 years ago
Justin Ruggles	37cb3eb534	Add special case for 2nd-order IIR filter. 40% faster in ff_iir_filter_flt() when c->order == 2.	14 years ago
Justin Ruggles	98cfadd648	10l: reverse the biquad coefficients. I did not notice that the filter implementation uses a reversed history state. Signed-off-by: Janne Grunau <janne-ffmpeg@jannau.net>	14 years ago
Justin Ruggles	69915b48d6	iir: Change dst param to float* in ff_iir_filter_flt(). Signed-off-by: Mans Rullgard <mans@mansr.com>	14 years ago
Justin Ruggles	0361d13cf3	iir: change filter type if/else to a switch. Simplifies error handling and makes it easier to add additional filter types. Signed-off-by: Mans Rullgard <mans@mansr.com>	14 years ago
Justin Ruggles	fcdf0a43cd	Add biquad high-pass and low-pass IIR filters. Signed-off-by: Mans Rullgard <mans@mansr.com>	14 years ago
Justin Ruggles	30112adadf	Split out Butterworth filter coeff init to a separate function. Signed-off-by: Mans Rullgard <mans@mansr.com>	14 years ago
Justin Ruggles	75b98610a7	cosmetics: vertical alignment and line wrap Signed-off-by: Mans Rullgard <mans@mansr.com>	14 years ago
Justin Ruggles	d42dc217ed	Add memory allocation failure checks to ff_iir_filter_init_coeffs(). Signed-off-by: Mans Rullgard <mans@mansr.com>	14 years ago
Justin Ruggles	ebb230279a	cosmetics: wrap long line Signed-off-by: Mans Rullgard <mans@mansr.com>	14 years ago
Justin Ruggles	0a3d7697b4	Add function ff_iir_filter_flt() to accept floating-point input and output. Signed-off-by: Mans Rullgard <mans@mansr.com>	14 years ago
Justin Ruggles	c3897d7690	Fix use of sstep/dstep in ff_iir_filter(). Signed-off-by: Mans Rullgard <mans@mansr.com>	14 years ago
Diego Biurrun	ba87f0801d	Remove explicit filename from Doxygen @file commands. 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
Alex Converse	ca0f1e5092	IIR filter test program. Originally committed as revision 19443 to svn://svn.ffmpeg.org/ffmpeg/trunk	16 years ago
Alex Converse	c8ec2f1cb8	Mark iir filter init and free functions av_cold. Originally committed as revision 19398 to svn://svn.ffmpeg.org/ffmpeg/trunk	16 years ago
Alex Converse	47f49f98ca	Fix "iirfilter.c:55: warning: unused variable ‘size’" Originally committed as revision 19397 to svn://svn.ffmpeg.org/ffmpeg/trunk	16 years ago
Alex Converse	e187d87d7d	Eliminate use of complex.h from iirfilter.c Originally committed as revision 19396 to svn://svn.ffmpeg.org/ffmpeg/trunk	16 years ago
Måns Rullgård	181b336304	Fix declarations of complex numbers Complex numbers must be declared using a base type of float, double, or long double. Originally committed as revision 19390 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
Kostya Shishkov	a169f49881	Add generic IIR filter interface with Butterworth lowpass filter implementation and remove obsoleted old lowpass filter. Originally committed as revision 15005 to svn://svn.ffmpeg.org/ffmpeg/trunk	17 years ago

22 Commits (c98b928fa7dea6418c24a163e7bcd36b0eb922a3)