Forward the number of skipped frames by the OS in audio playout.

media/audio/audio_input_device.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/audio_input_device.h"
 
 #include "base/bind.h"
 #include "base/memory/scoped_vector.h"
 #include "base/strings/stringprintf.h"
 #include "base/threading/thread_restrictions.h"
@@ skipping 20 matching lines @@
                       int memory_length,
                       int total_segments,
                       CaptureCallback* capture_callback);
   ~AudioThreadCallback() override;
 
   void MapSharedMemory() override;
 
   // Called whenever we receive notifications about pending data.
   void Process(uint32 pending_data) override;
 
+  void FramesSkipped(uint32_t frames_skipped) override;
+
  private:
   int current_segment_id_;
   uint32 last_buffer_id_;
   ScopedVector<media::AudioBus> audio_buses_;
   CaptureCallback* capture_callback_;
 
   DISALLOW_COPY_AND_ASSIGN(AudioThreadCallback);
 };
 
 AudioInputDevice::AudioInputDevice(
@@ skipping 83 matching lines @@
   base::AutoLock auto_lock(audio_thread_lock_);
   // TODO(miu): See TODO in OnStreamCreated method for AudioOutputDevice.
   // Interface changes need to be made; likely, after AudioInputDevice is merged
   // into AudioOutputDevice (http://crbug.com/179597).
   if (stopping_hack_)
     return;
 
   DCHECK(audio_thread_.IsStopped());
   audio_callback_.reset(new AudioInputDevice::AudioThreadCallback(
       audio_parameters_, handle, length, total_segments, callback_));
-  audio_thread_.Start(
-      audio_callback_.get(), socket_handle, "AudioInputDevice", true);
+  audio_thread_.Start(audio_callback_.get(), socket_handle, "AudioInputDevice",
+                      true, true);
 
   state_ = RECORDING;
   ipc_->RecordStream();
 }
 
 void AudioInputDevice::OnVolume(double volume) {
   NOTIMPLEMENTED();
 }
 
 void AudioInputDevice::OnStateChanged(
@@ skipping 179 matching lines @@
   capture_callback_->Capture(
       audio_bus,
       buffer->params.hardware_delay_bytes / bytes_per_ms_,  // Delay in ms
       buffer->params.volume,
       buffer->params.key_pressed);
 
   if (++current_segment_id_ >= total_segments_)
     current_segment_id_ = 0;
 }
 
+void AudioInputDevice::AudioThreadCallback::FramesSkipped(
+    uint32_t frames_skipped) {
+  // Should not be called for input.
+  NOTREACHED();
+}
+
 }  // namespace media