| /* |
| * libjingle |
| * Copyright 2014 Google Inc. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions are met: |
| * |
| * 1. Redistributions of source code must retain the above copyright notice, |
| * this list of conditions and the following disclaimer. |
| * 2. Redistributions in binary form must reproduce the above copyright notice, |
| * this list of conditions and the following disclaimer in the documentation |
| * and/or other materials provided with the distribution. |
| * 3. The name of the author may not be used to endorse or promote products |
| * derived from this software without specific prior written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED |
| * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF |
| * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO |
| * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, |
| * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; |
| * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, |
| * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR |
| * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF |
| * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| */ |
| |
| #include "talk/media/webrtc/webrtcmediaengine.h" |
| #include "talk/media/webrtc/webrtcvideoengine2.h" |
| #include "talk/media/webrtc/webrtcvoiceengine.h" |
| #include "webrtc/base/arraysize.h" |
| |
| namespace cricket { |
| |
| class WebRtcMediaEngine2 |
| : public CompositeMediaEngine<WebRtcVoiceEngine, WebRtcVideoEngine2> { |
| public: |
| WebRtcMediaEngine2(webrtc::AudioDeviceModule* adm, |
| WebRtcVideoEncoderFactory* encoder_factory, |
| WebRtcVideoDecoderFactory* decoder_factory) { |
| voice_.SetAudioDeviceModule(adm); |
| video_.SetExternalDecoderFactory(decoder_factory); |
| video_.SetExternalEncoderFactory(encoder_factory); |
| } |
| }; |
| |
| } // namespace cricket |
| |
| cricket::MediaEngineInterface* CreateWebRtcMediaEngine( |
| webrtc::AudioDeviceModule* adm, |
| cricket::WebRtcVideoEncoderFactory* encoder_factory, |
| cricket::WebRtcVideoDecoderFactory* decoder_factory) { |
| return new cricket::WebRtcMediaEngine2(adm, encoder_factory, |
| decoder_factory); |
| } |
| |
| void DestroyWebRtcMediaEngine(cricket::MediaEngineInterface* media_engine) { |
| delete media_engine; |
| } |
| |
| namespace cricket { |
| |
| // Used by PeerConnectionFactory to create a media engine passed into |
| // ChannelManager. |
| MediaEngineInterface* WebRtcMediaEngineFactory::Create( |
| webrtc::AudioDeviceModule* adm, |
| WebRtcVideoEncoderFactory* encoder_factory, |
| WebRtcVideoDecoderFactory* decoder_factory) { |
| return CreateWebRtcMediaEngine(adm, encoder_factory, decoder_factory); |
| } |
| |
| const char* kBweExtensionPriorities[] = { |
| kRtpTransportSequenceNumberHeaderExtension, |
| kRtpAbsoluteSenderTimeHeaderExtension, kRtpTimestampOffsetHeaderExtension}; |
| |
| const size_t kBweExtensionPrioritiesLength = arraysize(kBweExtensionPriorities); |
| |
| int GetPriority(const RtpHeaderExtension& extension, |
| const char* extension_prios[], |
| size_t extension_prios_length) { |
| for (size_t i = 0; i < extension_prios_length; ++i) { |
| if (extension.uri == extension_prios[i]) |
| return static_cast<int>(i); |
| } |
| return -1; |
| } |
| |
| std::vector<RtpHeaderExtension> FilterRedundantRtpExtensions( |
| const std::vector<RtpHeaderExtension>& extensions, |
| const char* extension_prios[], |
| size_t extension_prios_length) { |
| if (extensions.empty()) |
| return std::vector<RtpHeaderExtension>(); |
| std::vector<RtpHeaderExtension> filtered; |
| std::map<int, const RtpHeaderExtension*> sorted; |
| for (auto& extension : extensions) { |
| int priority = |
| GetPriority(extension, extension_prios, extension_prios_length); |
| if (priority == -1) { |
| filtered.push_back(extension); |
| continue; |
| } else { |
| sorted[priority] = &extension; |
| } |
| } |
| if (!sorted.empty()) |
| filtered.push_back(*sorted.begin()->second); |
| return filtered; |
| } |
| |
| } // namespace cricket |