1 files changed, 41 insertions, 0 deletions
diff --git a/misc/random.h b/misc/random.h
new file mode 100644
index 0000000000..9a3bef2fbc
--- /dev/null
+++ b/misc/random.h
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+/*
+ * Implementation of non-cryptographic pseudo-random number
+ * generator algorithm known as xoshiro.
+ *
+ * This file is part of mpv.
+ *
+ * mpv 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.
+ *
+ * mpv 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 Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with mpv.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#pragma once
+
+#include <stdint.h>
+
+/*
+ * Initialize the pseudo-random number generator's state with
+ * the given 64-bit seed.
+ */
+void mp_rand_seed(uint64_t seed);
+
+/*
+ * Return the next 64-bit psuedo-random integer, and update the state
+ * accordingly.
+ */
+uint64_t mp_rand_next(void);
+
+/*
+ * Return a double value in the range of [0.0, 1.0) with uniform
+ * distribution, and update the state accordingly.
+ */
+double mp_rand_next_double(void);