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..1986ce1b052a9e59cf54a4e483f9d4aa3ecaa239 100644
--- a/media/audio/audio_manager_base.h
+++ b/media/audio/audio_manager_base.h
@@ -11,6 +11,7 @@
 #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"
@@ -67,6 +68,11 @@ class MEDIA_EXPORT AudioManagerBase : public AudioManager {
       const std::string& input_device_id) override;
   std::unique_ptr<AudioLog> CreateAudioLog(
       AudioLogFactory::AudioComponent component) override;
+  std::unique_ptr<AudioFileWriter> CreateAudioFileWriter(
+      const AudioParameters& params) override;
+  void EnableOutputDebugRecording(
+      const base::FilePath& base_file_name) override;
+  void DisableOutputDebugRecording() override;
 
   void SetMaxStreamCountForTesting(int max_input, int max_output) final;
 
@@ -105,13 +111,16 @@ class MEDIA_EXPORT AudioManagerBase : public AudioManager {
   int input_stream_count() const {
     return static_cast<int>(input_streams_.size());
   }
-  int output_stream_count() const { return num_output_streams_; }
+  int output_stream_count() const {
+    return static_cast<int>(output_streams_.size());
+  }
 
  protected:
   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.
@@ -166,6 +175,9 @@ class MEDIA_EXPORT AudioManagerBase : public AudioManager {
   std::string GetGroupIDOutput(const std::string& output_device_id);
   std::string GetGroupIDInput(const std::string& input_device_id);
 
+  base::FilePath GetDebugRecordingFileNameWithExtensions(
+      const base::FilePath& file_name);
+
   // Max number of open output streams, modified by
   // SetMaxOutputStreamsAllowed().
   int max_num_output_streams_;
@@ -173,12 +185,12 @@ class MEDIA_EXPORT AudioManagerBase : public AudioManager {
   // Max number of open input streams.
   int max_num_input_streams_;
 
-  // Number of currently open output streams.
-  int num_output_streams_;
-
   // Track output state change listeners.
   base::ObserverList<AudioDeviceListener> output_listeners_;
 
+  // Contains currently open output streams.
+  std::unordered_set<AudioOutputStream*> output_streams_;
+
   // Contains currently open input streams.
   std::unordered_set<AudioInputStream*> input_streams_;
 
@@ -189,6 +201,16 @@ 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, otherwise disabled.
+  base::FilePath debug_recording_base_file_name_;
+
+  // Running id to append to the base filename.
+  int next_filename_id_;
+
   DISALLOW_COPY_AND_ASSIGN(AudioManagerBase);
 };