1 files changed, 63 insertions, 0 deletions
diff --git a/osdep/timer.h b/osdep/timer.h
new file mode 100644
index 0000000..3a925ca
--- /dev/null
+++ b/osdep/timer.h
@@ -0,0 +1,63 @@
+/*
+ * 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/>.
+ */
+
+#ifndef MPLAYER_TIMER_H
+#define MPLAYER_TIMER_H
+
+#include <inttypes.h>
+
+// Initialize timer, must be called at least once at start.
+void mp_time_init(void);
+
+// Return time in nanoseconds. Never wraps. Never returns 0 or negative values.
+int64_t mp_time_ns(void);
+
+// Return time in seconds. Can have down to 1 nanosecond resolution, but will
+// be much worse when casted to float.
+double mp_time_sec(void);
+
+// Provided by OS specific functions (timer-linux.c)
+void mp_raw_time_init(void);
+// ensure this doesn't return 0
+uint64_t mp_raw_time_ns(void);
+
+// Sleep in nanoseconds.
+void mp_sleep_ns(int64_t ns);
+
+#ifdef _WIN32
+// returns: timer resolution in ms if needed and started successfully, else 0
+int mp_start_hires_timers(int wait_ms);
+
+// call unconditionally with the return value of mp_start_hires_timers
+void mp_end_hires_timers(int resolution_ms);
+#endif  /* _WIN32 */
+
+// Converts time units to nanoseconds (int64_t)
+#define MP_TIME_S_TO_NS(s) ((s) * INT64_C(1000000000))
+#define MP_TIME_MS_TO_NS(ms) ((ms) * INT64_C(1000000))
+#define MP_TIME_US_TO_NS(us) ((us) * INT64_C(1000))
+
+// Converts nanoseconds to specified time unit (double)
+#define MP_TIME_NS_TO_S(ns) ((ns) / (double)1000000000)
+#define MP_TIME_NS_TO_MS(ns) ((ns) / (double)1000000)
+#define MP_TIME_NS_TO_US(ns) ((ns) / (double)1000)
+
+// Add a time in seconds to the given time in nanoseconds, and return it.
+// Takes care of possible overflows. Never returns a negative or 0 time.
+int64_t mp_time_ns_add(int64_t time_ns, double timeout_sec);
+
+#endif /* MPLAYER_TIMER_H */