Fix an issue that audio and video may run out of sync

media/base/android/media_source_player_unittest.cc

 // Copyright 2013 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 <string>
 
 #include "base/basictypes.h"
 #include "base/logging.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/strings/stringprintf.h"
@@ skipping 2046 matching lines @@
   // player has not yet received media crypto.
   DemuxerConfigs configs = CreateVideoDemuxerConfigs();
   configs.is_video_encrypted = true;
 
   player_.OnDemuxerConfigsAvailable(configs);
   CreateNextTextureAndSetVideoSurface();
   EXPECT_FALSE(IsPendingSurfaceChange());
   EXPECT_FALSE(GetMediaDecoderJob(false));
 }
 
+TEST_F(MediaSourcePlayerTest, CurrentTimeUpdatedWhileDecoderStarved) {
+  SKIP_TEST_IF_MEDIA_CODEC_BRIDGE_IS_NOT_AVAILABLE();
+
+  // Test that current time is updated while decoder is starved.
+  StartAudioDecoderJob(true);
+  for (int i = 0; i < 3; ++i) {
+    player_.OnDemuxerDataAvailable(CreateReadFromDemuxerAckForAudio(i));
+    WaitForAudioDecodeDone();
+  }
+  base::TimeDelta current_time = player_.GetCurrentTime();
+
+  // Trigger starvation while the decoder is decoding.
+  player_.OnDemuxerDataAvailable(CreateReadFromDemuxerAckForAudio(3));
+  TriggerPlayerStarvation();
+  WaitForAudioDecodeDone();
+
+  // Current time should be updated.
+  EXPECT_LT(current_time.InMillisecondsF(),
+            player_.GetCurrentTime().InMillisecondsF());
+}
+
+TEST_F(MediaSourcePlayerTest, CurrentTimeKeepsIncreasingAfterConfigChange) {
+  SKIP_TEST_IF_MEDIA_CODEC_BRIDGE_IS_NOT_AVAILABLE();
+
+  // Test current time keep on increasing after audio config change.
+  // Test that current time is updated while decoder is starved.
+  StartAudioDecoderJob(true);
+
+  for (int i = 0; i < 4; ++i) {
+    player_.OnDemuxerDataAvailable(CreateReadFromDemuxerAckForAudio(i));
+    WaitForAudioDecodeDone();
+  }
+  base::TimeDelta current_time = player_.GetCurrentTime();
+  EXPECT_LT(0.0, current_time.InMillisecondsF());
+
+  DemuxerData data = CreateReadFromDemuxerAckWithConfigChanged(true, 0);
+  player_.OnDemuxerDataAvailable(data);
+  WaitForAudioDecodeDone();
+
+  // Simulate arrival of new configs.
+  player_.OnDemuxerConfigsAvailable(CreateAudioDemuxerConfigs(kCodecVorbis));
+  for (int i = 0; i < 4; ++i) {
+    player_.OnDemuxerDataAvailable(CreateReadFromDemuxerAckForAudio(i));
+    WaitForAudioDecodeDone();
+    base::TimeDelta new_current_time = player_.GetCurrentTime();
+    EXPECT_LE(current_time.InMillisecondsF(),
+              new_current_time.InMillisecondsF());
+    current_time = new_current_time;
+  }
+}
+
 }  // namespace media