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Author SHA1 Message Date
Muhammad FaizandMichael Niedermayer 5b48dd75d5 avfilter/avf_showcqt: use frequency domain windowing 
faster initialization and less code
slightly different result computationally from previous
coeffclamp option is ignored

Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
 2015-09-18 18:27:18 +02:00
Muhammad FaizandMichael Niedermayer 145c5a9978 avfilter/avf_showcqt: change fft left-right separation 
This simplifies the code

Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
 2015-09-14 12:51:43 +02:00
Muhammad FaizandMichael Niedermayer a141948a8b avfilter/avf_showcqt: optimize gamma calculation 
benchmark (on intel core2 duo, gcc 4.9.1)
input samples duration 00:03:39.59
command: time -p ffmpeg -f f32le -ac 2 -ar 44100 -i input.pcm \
         -filter_complex showcqt=fullhd=0:gamma=$gamma \
         -f rawvideo -y /dev/null
gamma  previous  modified
  1    48.49 s   45.38 s
  2    49.33 s   48.11 s
  3    80.86 s   59.80 s
  4    80.84 s   51.25 s
  5    80.75 s   61.06 s
  6    80.93 s   61.80 s
  7    80.03 s   61.56 s

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
 2015-05-03 11:53:04 +02:00
Muhammad FaizandMichael Niedermayer eba5cb2028 avfilter/showcqt: add gamma2 option 
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
 2015-01-18 05:15:15 +01:00
Muhammad FaizandClément Bœsch c82a288f87 avfilter/showcqt: add fontcolor option 2014-08-23 10:01:22 +02:00
Muhammad FaizandMichael Niedermayer 94494dab91 avfilter/showcqt: add and extend tlength and volume options 
Add a tlength option with frequency and timeclamp variable

Add to the volume option support for frequency and timeclamp variable,
   a_weighting, b_weighting and c_weighting functions

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
 2014-08-08 18:59:02 +02:00
Muhammad FaizandMichael Niedermayer 4852a88dfb avutil/opt: set_string_number(): remove unneeded copy 
also remove unused variables

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
 2014-07-22 16:58:41 +02:00
Muhammad FaizandMichael Niedermayer 4927c0a988 avutil/opt.c: fix bug when parsing option 
fix these strange behavior:
-af flanger=delay=10 [OK]
-af flanger=delay=1e1 [OK]
-af flanger=delay=1e+1 [Error]
-af flanger=delay=0.1 [OK]
-af flanger=delay=1e-1 [Error]

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
 2014-07-21 15:20:39 +02:00
Muhammad FaizandMichael Niedermayer ce385c869c avfilter/biquads: avoid clipping when using floating type 
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
 2014-07-21 03:48:18 +02:00
Muhammad FaizandMichael Niedermayer 860d12978c doc/filters: fixing typo 
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
 2014-07-14 10:43:27 +02:00
Muhammad FaizandMichael Niedermayer 46563af79c avfilter/showcqt: adding freetype support 
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
 2014-06-30 21:53:14 +02:00
Muhammad FaizandPaul B Mahol 0a64fb7fb0 avfilter/avf_showcqt: add option for lower resolution 
Resolution can be 1920x1080 or 960x540.
 2014-06-12 09:16:08 +00:00
Muhammad FaizandMichael Niedermayer 40e938a7ed avfilter: new multimedia filter avf_showcqt.c 
this filter is the same as showspectrum but with constant Q transform,
so frequency is spaced logarithmically
 2014-06-05 14:04:01 +02:00