Index: media/base/audio_timestamp_helper.cc |
diff --git a/media/base/audio_timestamp_helper.cc b/media/base/audio_timestamp_helper.cc |
index 8429a3eb81ea0eb4336b5ef550b4906101c60237..8694ae329a003aed933cccba44429941c7305457 100644 |
--- a/media/base/audio_timestamp_helper.cc |
+++ b/media/base/audio_timestamp_helper.cc |
@@ -9,6 +9,20 @@ |
namespace media { |
+// static |
+base::TimeDelta AudioTimestampHelper::FramesToTime(int64_t frames, |
+ int samples_per_second) { |
+ DCHECK_GE(samples_per_second, 0); |
+ return base::TimeDelta::FromMicroseconds( |
+ frames * base::Time::kMicrosecondsPerSecond / samples_per_second); |
+} |
+ |
+// static |
+int64_t AudioTimestampHelper::TimeToFrames(base::TimeDelta time, |
+ int samples_per_second) { |
+ return time.InSecondsF() * samples_per_second; |
+} |
+ |
AudioTimestampHelper::AudioTimestampHelper(int samples_per_second) |
: base_timestamp_(kNoTimestamp), frame_count_(0) { |
DCHECK_GT(samples_per_second, 0); |