Nedeljko Babic
18d7074b4e
libavcodec: Implementation of 32 bit fixed point FFT
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Iterative implementation of 32 bit fixed point split-radix FFT.
Max FFT that can be calculated currently is 2^12.
Signed-off-by: Nedeljko Babic <nbabic@mips.com>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
11 years ago
Diego Biurrun
38282149b6
ppc: More consistent arch initialization
12 years ago
Diego Biurrun
42b9150b0d
fft: Remove pointless #ifdefs around function declarations
12 years ago
Janne Grunau
f101eab1be
x86: call most of the x86 dsp init functions under if (ARCH_X86)
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Rename the called dsp init functions to *_init_x86.
12 years ago
Nedeljko Babic
b3fdfc8c4e
Optimization of AC3 floating point decoder for MIPS
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FFT in MIPS implementation is working iteratively instead
of "recursively" calling functions for smaller FFT sizes.
Some of DSP and format convert utils functions are also optimized.
Signed-off-by: Nedeljko Babic <nbabic@mips.com>
Reviewed-by: Vitor Sessak <vitor1001@gmail.com>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
12 years ago
Diego Biurrun
adbfc605f6
doxygen: Consistently use '@' instead of '\' for Doxygen markup.
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Signed-off-by: Diego Biurrun <diego@biurrun.de>
14 years ago
Vitor Sessak
9d35fa520e
Add AVX FFT implementation.
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Signed-off-by: Reinhard Tartler <siretart@tauware.de>
14 years ago
Mans Rullgard
dba9852935
ARM: NEON fixed-point FFT
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Signed-off-by: Mans Rullgard <mans@mansr.com>
14 years ago
Mans Rullgard
bc154882e1
Fixed-point MDCT with 32-bit unscaled output
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Signed-off-by: Mans Rullgard <mans@mansr.com>
14 years ago
Mans Rullgard
7087ce08c8
Fixed-point FFT and MDCT
14 years ago
Mans Rullgard
e87a6f0dc9
Move ff_dct_init_mmx declaration to dct.h
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This was missed in 0aded94
.
Signed-off-by: Mans Rullgard <mans@mansr.com>
14 years ago
Mans Rullgard
0aded9484d
Move dct and rdft definitions to separate files
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This leaves fft.h with only the core FFT and MDCT definitions
thus making it more managable.
Signed-off-by: Mans Rullgard <mans@mansr.com>
14 years ago
Mans Rullgard
4538729afe
Move sine windows to a separate file
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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>
14 years ago
Mans Rullgard
a45fbda994
Move ff_kbd_window_init() to a separate file
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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>
14 years ago
Mans Rullgard
26f548bb59
fft: remove inline wrappers for function pointers
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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>
14 years ago
Mans Rullgard
2912e87a6c
Replace FFmpeg with Libav in licence headers
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Signed-off-by: Mans Rullgard <mans@mansr.com>
14 years ago
Loren Merritt
11ab1e409f
FFT: factor a shuffle out of the inner loop and merge it into fft_permute.
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6% faster SSE FFT on Conroe, 2.5% on Penryn.
Signed-off-by: Janne Grunau <janne-ffmpeg@jannau.net>
(cherry picked from commit e6b1ed693a
)
14 years ago
Loren Merritt
e6b1ed693a
FFT: factor a shuffle out of the inner loop and merge it into fft_permute.
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6% faster SSE FFT on Conroe, 2.5% on Penryn.
Signed-off-by: Janne Grunau <janne-ffmpeg@jannau.net>
14 years ago
Diego Elio Pettenò
d4a847711d
Mark C base versions of FFT functions static to fft.c
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Signed-off-by: Mans Rullgard <mans@mansr.com>
(cherry picked from commit 7767d8d361
)
14 years ago
Diego Elio Pettenò
7767d8d361
Mark C base versions of FFT functions static to fft.c
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Signed-off-by: Mans Rullgard <mans@mansr.com>
14 years ago
Alex Converse
c36b2c010e
Revert unintended changes to fft.h from r24890.
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Originally committed as revision 24891 to svn://svn.ffmpeg.org/ffmpeg/trunk
14 years ago
Nathan Caldwell
af00dddeca
aacenc: Rename Psy3gpp* structs to AacPsy*
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This allows cleaner implementation of other psymodels using the existing
structs. It also will make it easier to interchange individual parts of
the psymodel to create hybrid models.
Patch by: Nathan Caldwell <saintdev@gmail.com>
Originally committed as revision 24890 to svn://svn.ffmpeg.org/ffmpeg/trunk
14 years ago
Vitor Sessak
4dcc4f8eaa
SSE optimized 32-point DCT
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Originally committed as revision 24077 to svn://svn.ffmpeg.org/ffmpeg/trunk
15 years ago
Måns Rullgård
588d28ac08
Remove vestiges of radix-2 FFT
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Patch (mostly) by Loren Merritt
Originally committed as revision 23957 to svn://svn.ffmpeg.org/ffmpeg/trunk
15 years ago
Vitor Sessak
06d01188e9
More mp{1,2,3} 32-point DCT transform to our common DCT framework.
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Should allow for future SIMD optimizations.
Originally committed as revision 23912 to svn://svn.ffmpeg.org/ffmpeg/trunk
15 years ago
Måns Rullgård
49bd8e4b84
Fix grammar errors in documentation
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Originally committed as revision 23904 to svn://svn.ffmpeg.org/ffmpeg/trunk
15 years ago
Måns Rullgård
dd93649b71
Remove VLA in ff_kbd_window_init, limit window size to 1024
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Originally committed as revision 23755 to svn://svn.ffmpeg.org/ffmpeg/trunk
15 years ago
Vitor Sessak
e1484ebed6
Implement the discrete sine/cosine transforms DCT-I and DST-I
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Originally committed as revision 22649 to svn://svn.ffmpeg.org/ffmpeg/trunk
15 years ago
Måns Rullgård
a8bb9ea532
ARM: NEON optimised RDFT
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Originally committed as revision 22641 to svn://svn.ffmpeg.org/ffmpeg/trunk
15 years ago
Vitor Sessak
e30ab38e94
Call DCT by function pointer. Needed for any future ASM implementation and
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allows further cleanup.
Originally committed as revision 22617 to svn://svn.ffmpeg.org/ffmpeg/trunk
15 years ago
Vitor Sessak
2758004fce
DCT: remove unused field from context
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Originally committed as revision 22615 to svn://svn.ffmpeg.org/ffmpeg/trunk
15 years ago
Måns Rullgård
2881c83127
Call rdft by function pointer
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Call the RDFT by a function pointer like other FFT related transforms.
This makes instruction set optimized versions possible.
Based on patch by Alex Converse.
Originally committed as revision 22609 to svn://svn.ffmpeg.org/ffmpeg/trunk
15 years ago
Måns Rullgård
c70948315b
Create a public API for FFT family of functions
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Originally committed as revision 22291 to svn://svn.ffmpeg.org/ffmpeg/trunk
15 years ago
Måns Rullgård
41ea18fb0d
Give RDFT types more meaningful names
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Originally committed as revision 22290 to svn://svn.ffmpeg.org/ffmpeg/trunk
15 years ago
Måns Rullgård
1429224b04
Move FFT parts from dsputil.h to fft.h
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Originally committed as revision 22235 to svn://svn.ffmpeg.org/ffmpeg/trunk
15 years ago