UMA stats for browser/renderer audio rendering buffer size mismatch.

content/renderer/media/audio_device_factory.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 "content/renderer/media/audio_device_factory.h"
 
 #include <algorithm>
 
 #include "base/logging.h"
 #include "base/metrics/histogram_macros.h"
 #include "build/build_config.h"
 #include "content/common/content_constants_internal.h"
 #include "content/renderer/media/audio_input_message_filter.h"
 #include "content/renderer/media/audio_message_filter.h"
 #include "content/renderer/media/audio_renderer_mixer_manager.h"
 #include "content/renderer/render_thread_impl.h"
 #include "media/audio/audio_input_device.h"
 #include "media/audio/audio_output_device.h"
-#include "media/base/audio_latency.h"
 #include "media/base/audio_renderer_mixer_input.h"
 #include "media/base/media_switches.h"
 #include "url/origin.h"
 
 namespace content {
 
 // static
 AudioDeviceFactory* AudioDeviceFactory::factory_ = NULL;
 
 namespace {
 #if defined(OS_WIN)
 // Due to driver deadlock issues on Windows (http://crbug/422522) there is a
 // chance device authorization response is never received from the browser side.
 // In this case we will time out, to avoid renderer hang forever waiting for
 // device authorization (http://crbug/615589). This will result in "no audio".
 const int64_t kMaxAuthorizationTimeoutMs = 1000;
 #else
 const int64_t kMaxAuthorizationTimeoutMs = 0;  // No timeout.
 #endif  // defined(OS_WIN)
 
-media::AudioLatency::LatencyType GetSourceLatencyType(
-    AudioDeviceFactory::SourceType source) {
-  switch (source) {
-    case AudioDeviceFactory::kSourceWebAudioInteractive:
-      return media::AudioLatency::LATENCY_INTERACTIVE;
-    case AudioDeviceFactory::kSourceNone:
-    case AudioDeviceFactory::kSourceWebRtc:
-    case AudioDeviceFactory::kSourceNonRtcAudioTrack:
-    case AudioDeviceFactory::kSourceWebAudioBalanced:
-      return media::AudioLatency::LATENCY_RTC;
-    case AudioDeviceFactory::kSourceMediaElement:
-    case AudioDeviceFactory::kSourceWebAudioPlayback:
-      return media::AudioLatency::LATENCY_PLAYBACK;
-    case AudioDeviceFactory::kSourceWebAudioExact:
-      return media::AudioLatency::LATENCY_EXACT_MS;
-  }
-  NOTREACHED();
-  return media::AudioLatency::LATENCY_INTERACTIVE;
-}
-
 scoped_refptr<media::AudioOutputDevice> NewOutputDevice(
     int render_frame_id,
     int session_id,
     const std::string& device_id,
     const url::Origin& security_origin) {
   AudioMessageFilter* const filter = AudioMessageFilter::Get();
   scoped_refptr<media::AudioOutputDevice> device(new media::AudioOutputDevice(
       filter->CreateAudioOutputIPC(render_frame_id), filter->io_task_runner(),
       session_id, device_id, security_origin,
       // Set authorization request timeout at 80% of renderer hung timeout, but
@@ skipping 17 matching lines @@
 scoped_refptr<media::SwitchableAudioRendererSink> NewMixableSink(
     AudioDeviceFactory::SourceType source_type,
     int render_frame_id,
     int session_id,
     const std::string& device_id,
     const url::Origin& security_origin) {
   RenderThreadImpl* render_thread = RenderThreadImpl::current();
   return scoped_refptr<media::AudioRendererMixerInput>(
       render_thread->GetAudioRendererMixerManager()->CreateInput(
           render_frame_id, session_id, device_id, security_origin,
-          GetSourceLatencyType(source_type)));
+          AudioDeviceFactory::GetSourceLatencyType(source_type)));
 }
 
 }  // namespace
 
+media::AudioLatency::LatencyType AudioDeviceFactory::GetSourceLatencyType(
+    AudioDeviceFactory::SourceType source) {
+  switch (source) {
+    case AudioDeviceFactory::kSourceWebAudioInteractive:
+      return media::AudioLatency::LATENCY_INTERACTIVE;
+    case AudioDeviceFactory::kSourceNone:
+    case AudioDeviceFactory::kSourceWebRtc:
+    case AudioDeviceFactory::kSourceNonRtcAudioTrack:
+    case AudioDeviceFactory::kSourceWebAudioBalanced:
+      return media::AudioLatency::LATENCY_RTC;
+    case AudioDeviceFactory::kSourceMediaElement:
+    case AudioDeviceFactory::kSourceWebAudioPlayback:
+      return media::AudioLatency::LATENCY_PLAYBACK;
+    case AudioDeviceFactory::kSourceWebAudioExact:
+      return media::AudioLatency::LATENCY_EXACT_MS;
+  }
+  NOTREACHED();
+  return media::AudioLatency::LATENCY_INTERACTIVE;
+}
+
 scoped_refptr<media::AudioRendererSink>
 AudioDeviceFactory::NewAudioRendererMixerSink(
     int render_frame_id,
     int session_id,
     const std::string& device_id,
     const url::Origin& security_origin) {
   return NewFinalAudioRendererSink(render_frame_id, session_id, device_id,
                                    security_origin);
 }
 
@@ skipping 100 matching lines @@
                                                device_id, security_origin);
     if (sink)
       return sink;
   }
 
   return NewOutputDevice(render_frame_id, session_id, device_id,
                          security_origin);
 }
 
 }  // namespace content