1 files changed, 54 insertions, 0 deletions
diff --git a/third_party/aom/aom_ports/arm_cpudetect.h b/third_party/aom/aom_ports/arm_cpudetect.h
new file mode 100644
index 0000000000..33c2d1bb6a
--- /dev/null
+++ b/third_party/aom/aom_ports/arm_cpudetect.h
@@ -0,0 +1,54 @@
+/*
+ * Copyright (c) 2023, Alliance for Open Media. All rights reserved
+ *
+ * This source code is subject to the terms of the BSD 2 Clause License and
+ * the Alliance for Open Media Patent License 1.0. If the BSD 2 Clause License
+ * was not distributed with this source code in the LICENSE file, you can
+ * obtain it at www.aomedia.org/license/software. If the Alliance for Open
+ * Media Patent License 1.0 was not distributed with this source code in the
+ * PATENTS file, you can obtain it at www.aomedia.org/license/patent.
+ */
+
+#include "aom_ports/arm.h"
+#include "config/aom_config.h"
+
+#include <stdbool.h>
+#include <stdlib.h>
+#include <string.h>
+
+#if defined(_WIN32)
+#undef WIN32_LEAN_AND_MEAN
+#define WIN32_LEAN_AND_MEAN
+#undef WIN32_EXTRA_LEAN
+#define WIN32_EXTRA_LEAN
+#include <windows.h>
+#endif
+
+#ifdef WINAPI_FAMILY
+#include <winapifamily.h>
+#if !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
+#define getenv(x) NULL
+#endif
+#endif
+
+#if defined(__ANDROID__) && (__ANDROID_API__ < 18)
+#define ANDROID_USE_CPU_FEATURES_LIB 1
+// Use getauxval() when targeting (64-bit) Android with API level >= 18.
+// getauxval() is supported since Android API level 18 (Android 4.3.)
+// First Android version with 64-bit support was Android 5.x (API level 21).
+#include <cpu-features.h>
+#endif
+
+static bool arm_cpu_env_flags(int *flags) {
+  const char *env = getenv("AOM_SIMD_CAPS");
+  if (env && *env) {
+    *flags = (int)strtol(env, NULL, 0);
+    return true;
+  }
+  return false;
+}
+
+static int arm_cpu_env_mask(void) {
+  const char *env = getenv("AOM_SIMD_CAPS_MASK");
+  return env && *env ? (int)strtol(env, NULL, 0) : ~0;
+}