Cleanup: media_stream_api.* ==> media_stream_utils.*

content/public/renderer/media_stream_api.cc

-// Copyright 2015 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/public/renderer/media_stream_api.h"
-
-#include <utility>
-
-#include "base/callback.h"
-#include "base/guid.h"
-#include "base/memory/scoped_ptr.h"
-#include "base/rand_util.h"
-#include "base/strings/utf_string_conversions.h"
-#include "content/renderer/media/media_stream_audio_source.h"
-#include "content/renderer/media/media_stream_video_capturer_source.h"
-#include "content/renderer/media/media_stream_video_track.h"
-#include "content/renderer/render_thread_impl.h"
-#include "third_party/WebKit/public/platform/WebMediaStream.h"
-#include "third_party/WebKit/public/platform/WebMediaStreamSource.h"
-#include "third_party/WebKit/public/platform/WebURL.h"
-#include "third_party/WebKit/public/web/WebMediaStreamRegistry.h"
-#include "url/gurl.h"
-
-namespace content {
-
-bool AddVideoTrackToMediaStream(
-    scoped_ptr<media::VideoCapturerSource> video_source,
-    bool is_remote,
-    bool is_readonly,
-    blink::WebMediaStream* web_media_stream) {
-  DCHECK(video_source.get());
-  if (!web_media_stream || web_media_stream->isNull()) {
-    DLOG(ERROR) << "WebMediaStream is null";
-    return false;
-  }
-
-  blink::WebMediaStreamSource web_media_stream_source;
-  MediaStreamVideoSource* const media_stream_source =
-      new MediaStreamVideoCapturerSource(
-          MediaStreamSource::SourceStoppedCallback(), std::move(video_source));
-  const blink::WebString track_id =
-      blink::WebString::fromUTF8(base::GenerateGUID());
-  web_media_stream_source.initialize(track_id,
-                                     blink::WebMediaStreamSource::TypeVideo,
-                                     track_id, is_remote, is_readonly);
-  // Takes ownership of |media_stream_source|.
-  web_media_stream_source.setExtraData(media_stream_source);
-
-  blink::WebMediaConstraints constraints;
-  constraints.initialize();
-  web_media_stream->addTrack(MediaStreamVideoTrack::CreateVideoTrack(
-      media_stream_source, constraints,
-      MediaStreamVideoSource::ConstraintsCallback(), true));
-  return true;
-}
-
-bool AddAudioTrackToMediaStream(
-    scoped_refptr<media::AudioCapturerSource> audio_source,
-    int sample_rate,
-    media::ChannelLayout channel_layout,
-    int frames_per_buffer,
-    bool is_remote,
-    bool is_readonly,
-    blink::WebMediaStream* web_media_stream) {
-  DCHECK(audio_source.get());
-  if (!web_media_stream || web_media_stream->isNull()) {
-    DLOG(ERROR) << "WebMediaStream is null";
-    return false;
-  }
-
-  const media::AudioParameters params(
-      media::AudioParameters::AUDIO_PCM_LOW_LATENCY, channel_layout,
-      sample_rate, sizeof(int16_t) * 8, frames_per_buffer);
-  if (!params.IsValid()) {
-    DLOG(ERROR) << "Invalid audio parameters.";
-    return false;
-  }
-
-  blink::WebMediaStreamSource web_media_stream_source;
-  const blink::WebString track_id =
-      blink::WebString::fromUTF8(base::GenerateGUID());
-  web_media_stream_source.initialize(track_id,
-                                     blink::WebMediaStreamSource::TypeAudio,
-                                     track_id, is_remote, is_readonly);
-
-  MediaStreamAudioSource* media_stream_source(new MediaStreamAudioSource(
-      -1, StreamDeviceInfo(), MediaStreamSource::SourceStoppedCallback(),
-      RenderThreadImpl::current()->GetPeerConnectionDependencyFactory()));
-
-  blink::WebMediaConstraints constraints;
-  constraints.initialize();
-  {
-    // TODO(miu): In an upcoming change, a source purposed for passing audio
-    // directly (i.e., without modification) will replace this "hacky" use of
-    // WebRtcAudioCapturer.  http://crbug.com/577881
-    scoped_ptr<WebRtcAudioCapturer> capturer(
-        WebRtcAudioCapturer::CreateCapturer(-1, StreamDeviceInfo(), constraints,
-                                            nullptr, media_stream_source));
-    capturer->SetCapturerSource(std::move(audio_source), params);
-    media_stream_source->SetAudioCapturer(std::move(capturer));
-  }
-  web_media_stream_source.setExtraData(
-      media_stream_source);  // Takes ownership.
-
-  blink::WebMediaStreamTrack web_media_stream_track;
-  web_media_stream_track.initialize(web_media_stream_source);
-  RenderThreadImpl::current()
-      ->GetPeerConnectionDependencyFactory()
-      ->CreateLocalAudioTrack(web_media_stream_track);
-
-  web_media_stream->addTrack(web_media_stream_track);
-  return true;
-}
-
-}  // namespace content