cpu: Add CPU information to pa_core

This retains CPU information (processor type and supported features) in
pa_core, so that this information can be used by modules at init time to
figure out what optimisations may be used.

src/pulsecore/cpu.h

@@ -0,0 +1,45 @@
+#ifndef foocpuhfoo
+#define foocpuhfoo
+
+/***
+  This file is part of PulseAudio.
+
+  Copyright 2010 Arun Raghavan
+
+  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.
+***/
+
+#include <pulsecore/cpu-x86.h>
+#include <pulsecore/cpu-arm.h>
+
+typedef enum {
+    PA_CPU_UNDEFINED = 0,
+    PA_CPU_X86,
+    PA_CPU_ARM,
+} pa_cpu_type_t;
+
+typedef struct pa_cpu_info pa_cpu_info;
+
+struct pa_cpu_info {
+    pa_cpu_type_t cpu_type;
+
+    union {
+        pa_cpu_x86_flag_t x86;
+        pa_cpu_arm_flag_t arm;
+    } flags;
+};
+
+#endif /* foocpuhfoo */