summaryrefslogtreecommitdiffstats
path: root/src/pulsecore/cpu-orc.h
diff options
context:
space:
mode:
authorArun Raghavan <arun.raghavan@collabora.co.uk>2010-10-25 17:59:08 +0100
committerArun Raghavan <arun.raghavan@collabora.co.uk>2011-03-05 14:38:28 +0530
commit4cd90d9e32ca9a23e3c0f7615974ea0c55ff3e49 (patch)
tree07d205c5607ab454d55e7ec7b02a1262bccf4946 /src/pulsecore/cpu-orc.h
parent516dd169b493e37c8445cb68831529020272d0d5 (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.h37
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 */