| Age | Commit message (Collapse) | Author |
|---|
|
* commit '4cb6964244fd6c099383d8b7e99731e72cc844b9':
dcadec: simplify decoding of VQ high frequencies
Conflicts:
configure
libavcodec/dcadec.c
Merged-by: Michael Niedermayer <michaelni@gmx.at>
|
|
* commit '87ec849fe9acba075c843e67bcd01f256f481a18':
dcadec: remove scaling in lfe_interpolation_fir
Conflicts:
libavcodec/dcadec.c
libavcodec/dcadsp.c
Merged-by: Michael Niedermayer <michaelni@gmx.at>
|
|
The vector dequantization has a test in a loop preventing effective SIMD
implementation. By moving it out of the loop, this loop can be DSPized.
Therefore, modify the current DSP implementation. In particular, the
DSP implementation no longer has to handle null loop sizes.
The decode_hf implementations have following timings:
For x86 Arrandale:
C SSE SSE2 SSE4
win32: 260 162 119 104
win64: 242 N/A 89 72
The arm NEON optimizations follow in a later patch as external asm. The
now unused check for the y modifier in arm inline asm is removed from
configure.
|
|
The scaling factor is constant so it is faster to scale the
FIR coefficients in the tables during compilation.
Signed-off-by: Janne Grunau <janne-libav@jannau.net>
|
|
The x86 runs short on registers because numerous elements are not static.
In addition, splitting them allows more optimized code, at least for x86.
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
|
|
* commit '5b59a9fc6152169599561f04b4f66370edda5c9c':
x86: dcadsp: implement int8x8_fmul_int32
Merged-by: Michael Niedermayer <michaelni@gmx.at>
|
|
It is currently declared as a macro who is set to inlinable functions,
among which a Neon and a default C implementations.
Add a DSP parameter to each inline function, unused except by the
default C implementation which calls a function from the DSP context.
On an Arrandale CPU, gain for an inlined SSE2 function vs. a call:
- Win32: 29 to 26 cycles
- Win64: 25 to 23 cycles
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
|
|
The x86 runs short on registers because numerous elements are not static.
In addition, splitting them allows more optimized code, at least for x86.
Arm asm changes by Janne Grunau.
Signed-off-by: Janne Grunau <janne-libav@jannau.net>
|
|
For the callable function (as opposed to the inline one):
C SSE SSE2 SSE4
Win32: 47 42 29 26
Win64: 30 33 25 23
The SSE version is neither compiled nor set for ARCH_X86_64, as the
inlinable function takes over.
Signed-off-by: Janne Grunau <janne-libav@jannau.net>
|
|
It is currently declared as a macro who is set to inlinable functions,
among which a Neon and a default C implementations.
Add a DSP parameter to each inline function, unused except by the
default C implementation which calls a function from the DSP context.
On an Arrandale CPU, gain for an inlined SSE2 function vs. a call:
- Win32: 29 to 26 cycles
- Win64: 25 to 23 cycles
Signed-off-by: Janne Grunau <janne-libav@jannau.net>
|
|
* commit '800ffab48a7844dd5dc0a33b8f6b8e5ed718cf2e':
dcadsp: Add a new method, qmf_32_subbands
Merged-by: Michael Niedermayer <michaelni@gmx.at>
|
|
This does most of the work formerly carried out by
the static function qmf_32_subbands() in dcadec.c.
Signed-off-by: Martin Storsjö <martin@martin.st>
|
|
DSPContext.vector_fmul_window()
DCADSPContext.lfe_fir()
SynthFilterContext.synth_filter_float()
Signed-off-by: Mans Rullgard <mans@mansr.com>
(cherry picked from commit 80ba1ddb58b5923b9f36a6acd542affc4ca722eb)
|
|
Originally committed as revision 22863 to svn://svn.ffmpeg.org/ffmpeg/trunk
|
|
This enables SIMD optimisations of this function.
Originally committed as revision 22861 to svn://svn.ffmpeg.org/ffmpeg/trunk
|
|
Signed-off-by: Mans Rullgard <mans@mansr.com>
|
|
DSPContext.vector_fmul_window()
DCADSPContext.lfe_fir()
SynthFilterContext.synth_filter_float()
Signed-off-by: Mans Rullgard <mans@mansr.com>
|
