Pass delay and timestamp to AudioSourceCallback::OnMoreData.

media/audio/virtual_audio_output_stream.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/audio/virtual_audio_output_stream.h"
 
 #include <stdint.h>
 
 #include "base/logging.h"
+#include "base/time/time.h"
 #include "media/audio/virtual_audio_input_stream.h"
 
 namespace media {
 
 VirtualAudioOutputStream::VirtualAudioOutputStream(
     const AudioParameters& params, VirtualAudioInputStream* target,
     const AfterCloseCallback& after_close_cb)
     : params_(params), target_input_stream_(target),
       after_close_cb_(after_close_cb), callback_(NULL), volume_(1.0f) {
   DCHECK(params_.IsValid());
@@ skipping 52 matching lines @@
   DCHECK(thread_checker_.CalledOnValidThread());
   *volume = volume_;
 }
 
 double VirtualAudioOutputStream::ProvideInput(AudioBus* audio_bus,
                                               uint32_t frames_delayed) {
   // Note: This method may be invoked on any one thread, depending on the
   // platform.
   DCHECK(callback_);
 
-  const uint32_t upstream_delay_in_bytes =
-      params_.GetBytesPerFrame() * frames_delayed;
-  const int frames =
-      callback_->OnMoreData(audio_bus, upstream_delay_in_bytes, 0);
+  const base::TimeTicks target_playout_time =
+      base::TimeTicks::Now() +
+      base::TimeDelta::FromSecondsD(static_cast<double>(frames_delayed) /
+                                    params_.sample_rate());
+  const int frames = callback_->OnMoreData(target_playout_time, 0, audio_bus);
   if (frames < audio_bus->frames())
     audio_bus->ZeroFramesPartial(frames, audio_bus->frames() - frames);
 
   return frames > 0 ? volume_ : 0;
 }
 
 }  // namespace media