| Commit message (Collapse) | Author | Age | Files | Lines |
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This fixes the checking of supported compiler flags and the following error message for svolume_mmx:
pulsecore/svolume_mmx.c:157:76: error: invalid use of a cast in a inline asm context requiring an l-value:
remove the cast or build with -fheinous-gnu-extensions
: "+r" (samples), "+r" (volumes), "+r" (length), "=D" ((pa_reg_x86)channel), "=&r" (temp)
~~~~~~~~~~~~^~~~~~~
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Use #include "header.h" if functionality of header.h is implemented
and #include <header.h> if functionality of header.h is used.
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Only whitespace changes in here
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Somewhere in the history of the MMX tests, the number of channels was
changed from 1 to 2, but the number of samples was not increased to make
it even (multiple of the frame size).
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In the assembly optimized versions of SSE, a noise could occur when the
number of channels were 3,5,6 or 7. For MMX and ARM, this could occur
when the number of channels were 3.
Signed-off-by: David Henningsson <david.henningsson@canonical.com>
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http://pulseaudio.org/ticket/776
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We need to sign extend the lower part of the multiplication before adding it to
the higher part. Makes -1 * 0xffff work again.
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This was reported as Gentoo bug #287391 by Torsten Kaiser, and the fix was
suggested by Mike Frysinger.
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Tweak the constraints a little so that register starved 32bit systems
can select a stack variable for the channel paramter instead of reusing one of
the registers we're using in the code.
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We can reorder the algortihm a bit like we do for sse so that we
don't need the contants and masking instructions. Saves 2 instructions
for the mmx code.
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Use PA_MAX
Use pa_rtclock_now() for benchmarks
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Mark code that should only be compiled on x86 CPUs with proper defines.
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We don't need the compare because the sub operation already set the right flags
for us.
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MMX is about 6x faster, SSE around 15x on my machine.
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Add CPU detection code to activate the various optimisations.
Move some method definitions around.
Use compatibility macros when we can.
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Add code for an mmx optimized version of s16ne volume scaling. Install the
custom function.
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