1 files changed, 29 insertions, 0 deletions
diff --git a/media/libaom/src/av1/encoder/random.h b/media/libaom/src/av1/encoder/random.h
new file mode 100644
index 000000000..0bca39102
--- /dev/null
+++ b/media/libaom/src/av1/encoder/random.h
@@ -0,0 +1,29 @@
+/*
+ * Copyright (c) 2017, 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.
+ */
+
+#ifndef AOM_AV1_ENCODER_RANDOM_H_
+#define AOM_AV1_ENCODER_RANDOM_H_
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+// Generate a random number in the range [0, 32768).
+static INLINE unsigned int lcg_rand16(unsigned int *state) {
+  *state = (unsigned int)(*state * 1103515245ULL + 12345);
+  return *state / 65536 % 32768;
+}
+
+#ifdef __cplusplus
+}  // extern "C"
+#endif
+
+#endif  // AOM_AV1_ENCODER_RANDOM_H_