Switch stream creation and closing in Chrome audio rendering from IPC to Mojo

content/browser/media/audio_output_stream_impl.cc

+// Copyright 2016 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/browser/media/audio_output_stream_impl.h"
+
+namespace content {
+
+AudioOutputStreamImpl::AudioOutputStreamImpl(
+    media::mojom::AudioOutputStreamRequest request,
+    int stream_id,
+    int renderer_frame_id,
+    AudioRendererHost* audio_renderer_host)
+    : binding_(this, std::move(request)),
+      stream_id_(stream_id),
+      renderer_frame_id_(renderer_frame_id),
+      audio_renderer_host_(audio_renderer_host) {
+  DCHECK_CURRENTLY_ON(BrowserThread::IO);
+  LOG(ERROR) << "stream_id" << stream_id_;
+}
+
+AudioOutputStreamImpl::~AudioOutputStreamImpl() {
+  LOG(ERROR) << "~AudioOutputStreamImpl" << stream_id_;
+  // DCHECK_CURRENTLY_ON(BrowserThread::IO);
+}
+
+void AudioOutputStreamImpl::Close() {

[Henrik Grunell, 2016/05/20 13:35:40]

Do we do the same as here for all AudioOutputStreamImpls if the connection is
closed?

[rchtara, 2016/05/27 15:24:37]

yes

+  DCHECK_CURRENTLY_ON(BrowserThread::IO);
+  audio_renderer_host_->CloseStream(stream_id_);
+  audio_renderer_host_->get_audio_output_impl(renderer_frame_id_)

[Henrik Grunell, 2016/05/20 13:35:40]

Same comment as in AudioOutputImpl: could the AudioRendererHost own the
AudioOutputStreamImpls? If not, here only AudioOutputStreamImpl should be
called, and it can in turn call AudioRendererHost. And this class should have a
raw pointer to AudioOutputImpl.

[rchtara, 2016/05/27 15:24:37]

discussed offline about this 

+      ->RemoveStream(stream_id_);
+  LOG(ERROR) << "AudioOutputStreamImplClose" << stream_id_;
+}
+
+// static
+AudioOutputStreamImpl* AudioOutputStreamFactory::Factory(
+    media::mojom::AudioOutputStreamRequest request,
+    int stream_id,
+    int renderer_frame_id,
+    AudioRendererHost* audio_renderer_host) {
+  return new AudioOutputStreamImpl(std::move(request), stream_id,
+                                   renderer_frame_id, audio_renderer_host);
+}
+
+}  // namespace content