Merge branch 'v0.17.x'

2 files changed, 9 insertions, 4 deletions

diff --git a/src/clock.c b/src/clock.c
index 4100fa2d..d987aed4 100644
--- a/src/clock.c
+++ b/src/clock.c
@@ -25,6 +25,9 @@
 #include <mach/mach_time.h>
 #else
 #include <time.h>
+#ifndef CLOCK_MONOTONIC
+#include <sys/time.h>
+#endif
 #endif
 
 unsigned
@@ -89,7 +92,7 @@ monotonic_clock_us(void)
 	/* we have no monotonic clock, fall back to gettimeofday() */
 	struct timeval tv;
 	gettimeofday(&tv, 0);
-	return (uint64_t)tv.tv_sec * 1000 + (uint64_t)(tv.tv_usec) / 1000(;
+	return (uint64_t)tv.tv_sec * 1000 + (uint64_t)tv.tv_usec;
 #endif
 }
 
diff --git a/src/timer.c b/src/timer.c
index 2d955070..9a322846 100644
--- a/src/timer.c
+++ b/src/timer.c
@@ -31,9 +31,9 @@
 struct timer *timer_new(const struct audio_format *af)
 {
 	struct timer *timer = g_new(struct timer, 1);
-	timer->time = 0;
-	timer->started = 0;
-	timer->rate = af->sample_rate * audio_format_frame_size(af);
+	timer->time = 0; // us
+	timer->started = 0; // false
+	timer->rate = af->sample_rate * audio_format_frame_size(af); // samples per second
 
 	return timer;
 }
@@ -59,6 +59,8 @@ void timer_add(struct timer *timer, int size)
 {
 	assert(timer->started);
 
+	// (size samples) / (rate samples per second) = duration seconds
+	// duration seconds * 1000000 = duration us
 	timer->time += ((uint64_t)size * 1000000) / timer->rate;
 }