timer: refactor, add 64 bit timer function

Make OS specific timer code export a mp_raw_time_us() function, and
add generic implementations of GetTimer()/GetTimerMS() using this
function. New mpv code is supposed to call mp_time_us() in situations
where precision is absolutely needed, or mp_time_s() otherwise.

Make it so that mp_time_us() will return a value near program start.
We don't set it to 0 though to avoid confusion with relative vs.
absolute time. Instead, pick an arbitrary offset.

Move the test program in timer-darwin.c to timer.c, and modify it to
work with the generic timer functions.

1 files changed, 2 insertions, 1 deletions

diff --git a/Makefile b/Makefile
index 6f3d254c62..182094993e 100644
--- a/Makefile
+++ b/Makefile
@@ -215,8 +215,9 @@ SOURCES = talloc.c \
           demux/extension.c \
           demux/mf.c \
           demux/video.c \
-          osdep/numcores.c \
           osdep/io.c \
+          osdep/numcores.c \
+          osdep/timer.c \
           stream/stream.c \
           stream/stream_avdevice.c \
           stream/stream_file.c \