Audio output debug recording.

media/audio/pulse/pulse_output.cc

Index: media/audio/pulse/pulse_output.cc
diff --git a/media/audio/pulse/pulse_output.cc b/media/audio/pulse/pulse_output.cc
index 5efa040c0d1b96a712a77cc309badbeef9db4f2a..b8ad0baec1223fe0630935c318fe24486b3c7045 100644
--- a/media/audio/pulse/pulse_output.cc
+++ b/media/audio/pulse/pulse_output.cc
@@ -14,6 +14,8 @@
 #include "media/audio/pulse/pulse_util.h"
 #include "media/base/audio_sample_types.h"
 
+#include "base/debug/stack_trace.h"
+
 namespace media {
 
 using pulse::AutoPulseLock;
@@ -59,6 +61,7 @@ PulseAudioOutputStream::PulseAudioOutputStream(const AudioParameters& params,
       pa_stream_(NULL),
       volume_(1.0f),
       source_callback_(NULL) {
+  //  base::debug::StackTrace().Print();
   CHECK(params_.IsValid());
   audio_bus_ = AudioBus::Create(params_);
 }
@@ -73,6 +76,7 @@ PulseAudioOutputStream::~PulseAudioOutputStream() {
 
 bool PulseAudioOutputStream::Open() {
   DCHECK(thread_checker_.CalledOnValidThread());
+  //  base::debug::StackTrace().Print();
   return pulse::CreateOutputStream(
       &pa_mainloop_, &pa_context_, &pa_stream_, params_, device_id_,
       AudioManager::GetGlobalAppName(), &StreamNotifyCallback,
@@ -189,6 +193,7 @@ void PulseAudioOutputStream::Start(AudioSourceCallback* callback) {
   DCHECK(thread_checker_.CalledOnValidThread());
   CHECK(callback);
   CHECK(pa_stream_);
+  //  base::debug::StackTrace().Print();
 
   AutoPulseLock auto_lock(pa_mainloop_);
 
@@ -245,4 +250,9 @@ void PulseAudioOutputStream::GetVolume(double* volume) {
   *volume = volume_;
 }
 
+void PulseAudioOutputStream::EnableDebugRecording(
+    const base::FilePath& file_name) {}

[Henrik Grunell, 2016/12/16 14:12:59]

Create and start the file writer here, if OK to move AudioInputDebugWriter
(https://cs.chromium.org/chromium/src/content/browser/renderer_host/media/audi...),
into media/. Otherwise, only start.

+
+void PulseAudioOutputStream::DisableDebugRecording() {}
+
 }  // namespace media