1 files changed, 59 insertions, 0 deletions
diff --git a/thirdparties/common/include/libyuv/libyuv/cpu_id.h b/thirdparties/common/include/libyuv/libyuv/cpu_id.h
new file mode 100644
index 0000000..e964383
--- /dev/null
+++ b/thirdparties/common/include/libyuv/libyuv/cpu_id.h
@@ -0,0 +1,59 @@
+/*
+ *  Copyright 2011 The LibYuv Project Authors. All rights reserved.
+ *
+ *  Use of this source code is governed by a BSD-style license
+ *  that can be found in the LICENSE file in the root of the source
+ *  tree. An additional intellectual property rights grant can be found
+ *  in the file PATENTS.  All contributing project authors may
+ *  be found in the AUTHORS file in the root of the source tree.
+ */
+
+#ifndef INCLUDE_LIBYUV_CPU_ID_H_  // NOLINT
+#define INCLUDE_LIBYUV_CPU_ID_H_
+
+#ifdef __cplusplus
+namespace libyuv {
+extern "C" {
+#endif
+
+// Internal flag to indicate cpuid is initialized.
+static const int kCpuInitialized = 0x1;
+
+// These flags are only valid on ARM processors.
+static const int kCpuHasARM = 0x2;
+static const int kCpuHasNEON = 0x4;
+// 0x8 reserved for future ARM flag.
+
+// These flags are only valid on x86 processors.
+static const int kCpuHasX86 = 0x10;
+static const int kCpuHasSSE2 = 0x20;
+static const int kCpuHasSSSE3 = 0x40;
+static const int kCpuHasSSE41 = 0x80;
+static const int kCpuHasSSE42 = 0x100;
+static const int kCpuHasAVX = 0x200;
+// 0x400 reserved for AVX2.
+
+// Detect CPU has SSE2 etc.
+// Test_flag parameter should be one of kCpuHas constants above.
+// returns non-zero if instruction set is detected
+static __inline int TestCpuFlag(int test_flag) {
+  extern int cpu_info_;
+  extern int InitCpuFlags();
+  return (cpu_info_ ? cpu_info_ : InitCpuFlags()) & test_flag;
+}
+
+// For testing, allow CPU flags to be disabled.
+// ie MaskCpuFlags(~kCpuHasSSSE3) to disable SSSE3.
+// MaskCpuFlags(-1) to enable all cpu specific optimizations.
+// MaskCpuFlags(0) to disable all cpu specific optimizations.
+void MaskCpuFlags(int enable_flags);
+
+// Low level cpuid for X86.  Returns zeros on other CPUs.
+void CpuId(int cpu_info[4], int info_type);
+
+#ifdef __cplusplus
+}  // extern "C"
+}  // namespace libyuv
+#endif
+
+#endif  // INCLUDE_LIBYUV_CPU_ID_H_  NOLINT