1/*
2 * libjingle
3 * Copyright 2015 Google Inc.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions are met:
7 *
8 *  1. Redistributions of source code must retain the above copyright notice,
9 *     this list of conditions and the following disclaimer.
10 *  2. Redistributions in binary form must reproduce the above copyright notice,
11 *     this list of conditions and the following disclaimer in the documentation
12 *     and/or other materials provided with the distribution.
13 *  3. The name of the author may not be used to endorse or promote products
14 *     derived from this software without specific prior written permission.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
17 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
18 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
19 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
20 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
21 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
22 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
23 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
24 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
25 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
26 */
27
28#include "talk/app/webrtc/mediacontroller.h"
29
30#include "talk/session/media/channelmanager.h"
31#include "webrtc/base/bind.h"
32#include "webrtc/base/checks.h"
33#include "webrtc/call.h"
34
35namespace {
36
37const int kMinBandwidthBps = 30000;
38const int kStartBandwidthBps = 300000;
39const int kMaxBandwidthBps = 2000000;
40
41class MediaController : public webrtc::MediaControllerInterface,
42                        public sigslot::has_slots<> {
43 public:
44  MediaController(rtc::Thread* worker_thread,
45                  cricket::ChannelManager* channel_manager)
46      : worker_thread_(worker_thread), channel_manager_(channel_manager) {
47    RTC_DCHECK(nullptr != worker_thread);
48    worker_thread_->Invoke<void>(
49        rtc::Bind(&MediaController::Construct_w, this,
50                  channel_manager_->media_engine()));
51  }
52  ~MediaController() override {
53    worker_thread_->Invoke<void>(rtc::Bind(&MediaController::Destruct_w, this));
54  }
55
56  webrtc::Call* call_w() override {
57    RTC_DCHECK(worker_thread_->IsCurrent());
58    return call_.get();
59  }
60
61  cricket::ChannelManager* channel_manager() const override {
62    return channel_manager_;
63  }
64
65 private:
66  void Construct_w(cricket::MediaEngineInterface* media_engine) {
67    RTC_DCHECK(worker_thread_->IsCurrent());
68    RTC_DCHECK(media_engine);
69    webrtc::Call::Config config;
70    config.audio_state = media_engine->GetAudioState();
71    config.bitrate_config.min_bitrate_bps = kMinBandwidthBps;
72    config.bitrate_config.start_bitrate_bps = kStartBandwidthBps;
73    config.bitrate_config.max_bitrate_bps = kMaxBandwidthBps;
74    call_.reset(webrtc::Call::Create(config));
75  }
76  void Destruct_w() {
77    RTC_DCHECK(worker_thread_->IsCurrent());
78    call_.reset();
79  }
80
81  rtc::Thread* const worker_thread_;
82  cricket::ChannelManager* const channel_manager_;
83  rtc::scoped_ptr<webrtc::Call> call_;
84
85  RTC_DISALLOW_IMPLICIT_CONSTRUCTORS(MediaController);
86};
87}  // namespace {
88
89namespace webrtc {
90
91MediaControllerInterface* MediaControllerInterface::Create(
92    rtc::Thread* worker_thread,
93    cricket::ChannelManager* channel_manager) {
94  return new MediaController(worker_thread, channel_manager);
95}
96}  // namespace webrtc
97