diff options
author | Arun Raghavan <arun.raghavan@collabora.co.uk> | 2010-10-25 17:59:08 +0100 |
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committer | Arun Raghavan <arun.raghavan@collabora.co.uk> | 2011-03-05 14:38:28 +0530 |
commit | 4cd90d9e32ca9a23e3c0f7615974ea0c55ff3e49 (patch) | |
tree | 07d205c5607ab454d55e7ec7b02a1262bccf4946 /src/pulsecore/cpu-orc.h | |
parent | 516dd169b493e37c8445cb68831529020272d0d5 (diff) |
volume: Add Orc-based optimised volume scaling
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.
Diffstat (limited to 'src/pulsecore/cpu-orc.h')
-rw-r--r-- | src/pulsecore/cpu-orc.h | 37 |
1 files changed, 37 insertions, 0 deletions
diff --git a/src/pulsecore/cpu-orc.h b/src/pulsecore/cpu-orc.h new file mode 100644 index 00000000..9924d27b --- /dev/null +++ b/src/pulsecore/cpu-orc.h @@ -0,0 +1,37 @@ +#ifndef foocpuorchfoo +#define foocpuorchfoo + +/*** + This file is part of PulseAudio. + + Copyright 2010 Arun Raghavan <arun.raghavan@collabora.co.uk> + + PulseAudio is free software; you can redistribute it and/or modify + it under the terms of the GNU Lesser General Public License as published + by the Free Software Foundation; either version 2.1 of the License, + or (at your option) any later version. + + PulseAudio is distributed in the hope that it will be useful, but + WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + General Public License for more details. + + You should have received a copy of the GNU Lesser General Public License + along with PulseAudio; if not, write to the Free Software + Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 + USA. +***/ + +#ifdef HAVE_CONFIG_H +#include <config.h> +#endif + +#include <pulsecore/cpu.h> + +/* Orc-optimised bits */ + +void pa_cpu_init_orc(pa_cpu_info cpu_info); + +void pa_volume_func_init_orc(void); + +#endif /* foocpuorchfoo */ |