Interpolate media time for mojo rendering pipeline.

media/renderers/audio_renderer_impl_unittest.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "media/renderers/audio_renderer_impl.h"
 
 #include <memory>
 #include <utility>
 
 #include "base/bind.h"
@@ skipping 675 matching lines @@
   EXPECT_TRUE(ConsumeBufferedData(frames_to_consume));
 
   // Time should change now that Render() has been called a second time.
   timestamp_helper.AddFrames(frames_to_consume.value);
   EXPECT_EQ(timestamp_helper.GetTimestamp(), CurrentMediaTime());
 
   // Advance current time well past all played audio to simulate an irregular or
   // delayed OS callback. The value should be clamped to whats been rendered.
   timestamp_helper.AddFrames(frames_to_consume.value);
   tick_clock_->Advance(kConsumptionDuration * 2);
-  const base::TimeDelta last_media_time = CurrentMediaTime();
-  EXPECT_EQ(timestamp_helper.GetTimestamp(), last_media_time);
+  EXPECT_EQ(timestamp_helper.GetTimestamp(), CurrentMediaTime());
 
-  // Consume some more audio data, but provide a delay value which is at odds
-  // with the amount of time advanced so far; this would normally cause the
-  // media time to go backwards relative to its last value.
-  EXPECT_TRUE(ConsumeBufferedData(frames_to_consume, 1));
-
-  // Current time should never go backwards even for irregular OS callbacks and
-  // those with odd / wrong delay values.
-  EXPECT_EQ(last_media_time, CurrentMediaTime());
+  // Consume some more audio data.
+  EXPECT_TRUE(ConsumeBufferedData(frames_to_consume));
 
   // Stop ticking, the media time should be clamped to what's been rendered.
   StopTicking();
   EXPECT_EQ(timestamp_helper.GetTimestamp(), CurrentMediaTime());
   tick_clock_->Advance(kConsumptionDuration * 2);
   timestamp_helper.AddFrames(frames_to_consume.value);
   EXPECT_EQ(timestamp_helper.GetTimestamp(), CurrentMediaTime());
 }
 
 TEST_F(AudioRendererImplTest, RenderingDelayedForEarlyStartTime) {
@@ skipping 264 matching lines @@
   // Advance far enough that we shouldn't be clamped to current time (tested
   // already above).
   tick_clock_->Advance(kOneSecond);
   EXPECT_EQ(
       current_time + timestamp_helper.GetFrameDuration(frames_to_consume.value),
       CurrentMediaWallClockTime(&is_time_moving));
   EXPECT_TRUE(is_time_moving);
 }
 
 }  // namespace media