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/*
* 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"
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 =
ARRAY_SIZE(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
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