Audio output debug recording.

media/audio/audio_manager_base.h

Index: media/audio/audio_manager_base.h
diff --git a/media/audio/audio_manager_base.h b/media/audio/audio_manager_base.h
index b3100cf6c507bb6cb6af2086806356cc3c6de15a..7c1850187f1ee85a9bd26e8a03211ad44ffab5e6 100644
--- a/media/audio/audio_manager_base.h
+++ b/media/audio/audio_manager_base.h
@@ -5,12 +5,14 @@
 #ifndef MEDIA_AUDIO_AUDIO_MANAGER_BASE_H_
 #define MEDIA_AUDIO_AUDIO_MANAGER_BASE_H_
 
+#include <map>
 #include <memory>
 #include <string>
 #include <unordered_set>
 #include <utility>
 
 #include "base/compiler_specific.h"
+#include "base/files/file_path.h"
 #include "base/macros.h"
 #include "base/memory/scoped_vector.h"
 #include "base/observer_list.h"
@@ -26,7 +28,9 @@
 
 namespace media {
 
+class AudioDebugRecordingHelper;
 class AudioOutputDispatcher;
+class AudioOutputResampler;
 
 // AudioManagerBase provides AudioManager functions common for all platforms.
 class MEDIA_EXPORT AudioManagerBase : public AudioManager {
@@ -67,6 +71,9 @@ class MEDIA_EXPORT AudioManagerBase : public AudioManager {
       const std::string& input_device_id) override;
   std::unique_ptr<AudioLog> CreateAudioLog(
       AudioLogFactory::AudioComponent component) override;
+  void EnableOutputDebugRecording(
+      const base::FilePath& base_file_name) override;
+  void DisableOutputDebugRecording() override;
 
   void SetMaxStreamCountForTesting(int max_input, int max_output) final;
 
@@ -111,7 +118,8 @@ class MEDIA_EXPORT AudioManagerBase : public AudioManager {
   AudioManagerBase(
       scoped_refptr<base::SingleThreadTaskRunner> task_runner,
       scoped_refptr<base::SingleThreadTaskRunner> worker_task_runner,
-      AudioLogFactory* audio_log_factory);
+      AudioLogFactory* audio_log_factory,
+      CreateAudioFileWriterCallback create_audio_file_writer_callback);
 
   // Releases all the audio output dispatchers.
   // All audio streams should be closed before Shutdown() is called.
@@ -159,6 +167,9 @@ class MEDIA_EXPORT AudioManagerBase : public AudioManager {
 
   class CompareByParams;
 
+  using DebugRecordingHelperMap =
+      std::map<int, std::unique_ptr<AudioDebugRecordingHelper>>;
+
   // These functions assign group ids to devices based on their device ids.
   // The default implementation is an attempt to do this based on
   // GetAssociatedOutputDeviceID. Must be called on the audio worker thread
@@ -166,6 +177,12 @@ class MEDIA_EXPORT AudioManagerBase : public AudioManager {
   std::string GetGroupIDOutput(const std::string& output_device_id);
   std::string GetGroupIDInput(const std::string& input_device_id);
 
+  // Handles debug recording. Passed to AudioOutputResampler as callbacks. See
+  // description of callback definitions in AudioOutputResampler.
+  void RegisterDebugRecordingSource(int id, const AudioParameters& params);
+  void UnregisterDebugRecordingSource(int id);
+  void OnDebugRecordingData(int id, AudioBus* data);
+
   // Max number of open output streams, modified by
   // SetMaxOutputStreamsAllowed().
   int max_num_output_streams_;
@@ -189,6 +206,16 @@ class MEDIA_EXPORT AudioManagerBase : public AudioManager {
   // Proxy for creating AudioLog objects.
   AudioLogFactory* const audio_log_factory_;
 
+  // Callback for creating AudioFileWriter objects.
+  CreateAudioFileWriterCallback create_audio_file_writer_callback_;
+
+  // The base file name for debug recording files. If this is non-empty, debug
+  // recording is enabled.
+  base::FilePath debug_recording_base_file_name_;
+
+  // DebugRecordingHelpers, one per stream.
+  DebugRecordingHelperMap debug_recording_helpers_;
+
   DISALLOW_COPY_AND_ASSIGN(AudioManagerBase);
 };