1/*
2 * libjingle
3 * Copyright 2014 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#if defined(LIBPEERCONNECTION_LIB) || \
29    defined(LIBPEERCONNECTION_IMPLEMENTATION)
30
31#include "talk/media/webrtc/webrtcmediaengine.h"
32#include "talk/media/webrtc/webrtcvideoengine.h"
33#ifdef WEBRTC_CHROMIUM_BUILD
34#include "talk/media/webrtc/webrtcvideoengine2.h"
35#endif
36#include "talk/media/webrtc/webrtcvoiceengine.h"
37#ifdef WEBRTC_CHROMIUM_BUILD
38#include "webrtc/system_wrappers/interface/field_trial.h"
39#endif
40
41namespace cricket {
42
43class WebRtcMediaEngine :
44      public CompositeMediaEngine<WebRtcVoiceEngine, WebRtcVideoEngine> {
45 public:
46  WebRtcMediaEngine() {}
47  WebRtcMediaEngine(webrtc::AudioDeviceModule* adm,
48      webrtc::AudioDeviceModule* adm_sc,
49      WebRtcVideoEncoderFactory* encoder_factory,
50      WebRtcVideoDecoderFactory* decoder_factory) {
51    voice_.SetAudioDeviceModule(adm, adm_sc);
52    video_.SetVoiceEngine(&voice_);
53    video_.SetExternalEncoderFactory(encoder_factory);
54    video_.SetExternalDecoderFactory(decoder_factory);
55  }
56};
57
58#ifdef WEBRTC_CHROMIUM_BUILD
59class WebRtcMediaEngine2 :
60      public CompositeMediaEngine<WebRtcVoiceEngine, WebRtcVideoEngine2> {
61 public:
62  WebRtcMediaEngine2(webrtc::AudioDeviceModule* adm,
63                     webrtc::AudioDeviceModule* adm_sc,
64                     WebRtcVideoEncoderFactory* encoder_factory,
65                     WebRtcVideoDecoderFactory* decoder_factory) {
66    voice_.SetAudioDeviceModule(adm, adm_sc);
67    video_.SetExternalDecoderFactory(decoder_factory);
68    video_.SetExternalEncoderFactory(encoder_factory);
69    video_.SetVoiceEngine(&voice_);
70  }
71};
72#endif  // WEBRTC_CHROMIUM_BUILD
73
74}  // namespace cricket
75
76WRME_EXPORT
77cricket::MediaEngineInterface* CreateWebRtcMediaEngine(
78    webrtc::AudioDeviceModule* adm,
79    webrtc::AudioDeviceModule* adm_sc,
80    cricket::WebRtcVideoEncoderFactory* encoder_factory,
81    cricket::WebRtcVideoDecoderFactory* decoder_factory) {
82#ifdef WEBRTC_CHROMIUM_BUILD
83  if (webrtc::field_trial::FindFullName("WebRTC-NewVideoAPI") == "Enabled") {
84    return new cricket::WebRtcMediaEngine2(
85        adm, adm_sc, encoder_factory, decoder_factory);
86  }
87#endif // WEBRTC_CHROMIUM_BUILD
88  return new cricket::WebRtcMediaEngine(
89      adm, adm_sc, encoder_factory, decoder_factory);
90}
91
92WRME_EXPORT
93void DestroyWebRtcMediaEngine(cricket::MediaEngineInterface* media_engine) {
94  delete media_engine;
95}
96
97namespace cricket {
98
99// Used by ChannelManager when no media engine is passed in to it
100// explicitly (acts as a default).
101MediaEngineInterface* WebRtcMediaEngineFactory::Create() {
102  return new cricket::WebRtcMediaEngine();
103}
104
105// Used by PeerConnectionFactory to create a media engine passed into
106// ChannelManager.
107MediaEngineInterface* WebRtcMediaEngineFactory::Create(
108    webrtc::AudioDeviceModule* adm,
109    webrtc::AudioDeviceModule* adm_sc,
110    WebRtcVideoEncoderFactory* encoder_factory,
111    WebRtcVideoDecoderFactory* decoder_factory) {
112  return CreateWebRtcMediaEngine(adm, adm_sc, encoder_factory, decoder_factory);
113}
114
115}  // namespace cricket
116
117#endif  // defined(LIBPEERCONNECTION_LIB) ||
118        // defined(LIBPEERCONNECTION_IMPLEMENTATION)
119