Update to opus-HEAD-66611f1.

celt/x86/x86cpu.c

+/* Copyright (c) 2014, Cisco Systems, INC
+   Written by XiangMingZhu WeiZhou MinPeng YanWang
+
+   Redistribution and use in source and binary forms, with or without
+   modification, are permitted provided that the following conditions
+   are met:
+
+   - Redistributions of source code must retain the above copyright
+   notice, this list of conditions and the following disclaimer.
+
+   - Redistributions in binary form must reproduce the above copyright
+   notice, this list of conditions and the following disclaimer in the
+   documentation and/or other materials provided with the distribution.
+
+   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+   ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+   A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER
+   OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+   EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+   PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+   PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+   LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+   NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+   SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include "cpu_support.h"
+#include "macros.h"
+#include "main.h"
+#include "pitch.h"
+#include "x86cpu.h"
+
+#if defined(_MSC_VER)
+
+#include <intrin.h>
+#define cpuid(info,x) __cpuid(info,x)
+#else
+
+#if defined(CPU_INFO_BY_C)
+#include <cpuid.h>
+#endif
+
+static void cpuid(unsigned int CPUInfo[4], unsigned int InfoType)
+{
+#if defined(CPU_INFO_BY_ASM)
+    __asm__ __volatile__ (
+        "cpuid":
+        "=a" (CPUInfo[0]),
+        "=b" (CPUInfo[1]),
+        "=c" (CPUInfo[2]),
+        "=d" (CPUInfo[3]) :
+        "a" (InfoType), "c" (0)
+    );
+#elif defined(CPU_INFO_BY_C)
+    __get_cpuid(InfoType, &(CPUInfo[0]), &(CPUInfo[1]), &(CPUInfo[2]), &(CPUInfo[3]));
+#endif
+}
+
+#endif
+
+#include "SigProc_FIX.h"
+#include "celt_lpc.h"
+
+typedef struct CPU_Feature{
+    /*  SIMD: 128-bit */
+    int HW_SSE2;
+    int HW_SSE41;
+} CPU_Feature;
+
+static void opus_cpu_feature_check(CPU_Feature *cpu_feature)
+{
+    unsigned int info[4] = {0};
+    unsigned int nIds = 0;
+
+    cpuid(info, 0);
+    nIds = info[0];
+
+    if (nIds >= 1){
+        cpuid(info, 1);
+        cpu_feature->HW_SSE2 = (info[3] & (1 << 26)) != 0;
+        cpu_feature->HW_SSE41 = (info[2] & (1 << 19)) != 0;
+    }
+}
+
+int opus_select_arch(void)
+{
+    CPU_Feature cpu_feature = {0};
+    int arch;
+
+    opus_cpu_feature_check(&cpu_feature);
+
+    arch = 0;
+    if (!cpu_feature.HW_SSE2)
+    {
+       return arch;
+    }
+    arch++;
+
+    if (!cpu_feature.HW_SSE41)
+    {
+        return arch;
+    }
+    arch++;
+
+    return arch;
+}