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volume: Add Orc-based optimised volume scaling

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This adds volume scaling for 1- and 2-channel software volume scaling
using Orc. While testing the MMX and SSE backends on a Core2, I see an
~2x performance benefit over the hand-rolled MMX and SSE code. Since I
haven't been able to test on other architectures, the Orc code is only
used when MMX/SSE* is present. This can be changed in the future after
testing on AMD and ARM machines.
This commit is contained in:
Arun Raghavan 2010-10-25 17:59:08 +01:00
parent 516dd169b4
commit 4cd90d9e32
6 changed files with 282 additions and 0 deletions
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src/daemon/main.c
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@ -966,6 +966,7 @@ int main(int argc, char *argv[]) {
c->cpu_info.cpu_type = PA_CPU_X86;
if (pa_cpu_init_arm(&(c->cpu_info.flags.arm)))
c->cpu_info.cpu_type = PA_CPU_ARM;
pa_cpu_init_orc(c->cpu_info);
}
pa_assert_se(pa_signal_init(pa_mainloop_get_api(mainloop)) == 0);