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/*
* Copyright (C) 2015, 2016 Ericsson AB. All rights reserved.
*
* 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. Neither the name of Ericsson nor the names of its contributors
* may be used to endorse or promote products derived from this
* software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "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 COPYRIGHT
* OWNER OR CONTRIBUTORS 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 "config.h"
#include "MediaEndpointSessionDescription.h"
#if ENABLE(WEB_RTC)
#include "ExceptionCode.h"
#include "SDPProcessor.h"
#include <wtf/NeverDestroyed.h>
namespace WebCore {
#define STRING_FUNCTION(name) \
static const String& name##String() \
{ \
static NeverDestroyed<const String> name { ASCIILiteral(#name) }; \
return name; \
}
STRING_FUNCTION(offer)
STRING_FUNCTION(pranswer)
STRING_FUNCTION(answer)
STRING_FUNCTION(rollback)
Ref<MediaEndpointSessionDescription> MediaEndpointSessionDescription::create(RTCSessionDescription::SdpType type, RefPtr<MediaEndpointSessionConfiguration>&& configuration)
{
return adoptRef(*new MediaEndpointSessionDescription(type, WTFMove(configuration), nullptr));
}
ExceptionOr<Ref<MediaEndpointSessionDescription>> MediaEndpointSessionDescription::create(RefPtr<RTCSessionDescription>&& rtcDescription, const SDPProcessor& sdpProcessor)
{
RefPtr<MediaEndpointSessionConfiguration> configuration;
auto result = sdpProcessor.parse(rtcDescription->sdp(), configuration);
if (result != SDPProcessor::Result::Success) {
if (result == SDPProcessor::Result::ParseError)
return Exception { INVALID_ACCESS_ERR, ASCIILiteral("SDP content is invalid") };
LOG_ERROR("SDPProcessor internal error");
return Exception { ABORT_ERR, ASCIILiteral("Internal error") };
}
return adoptRef(*new MediaEndpointSessionDescription(rtcDescription->type(), WTFMove(configuration), WTFMove(rtcDescription)));
}
RefPtr<RTCSessionDescription> MediaEndpointSessionDescription::toRTCSessionDescription(const SDPProcessor& sdpProcessor) const
{
String sdpString;
SDPProcessor::Result result = sdpProcessor.generate(*m_configuration, sdpString);
if (result != SDPProcessor::Result::Success) {
LOG_ERROR("SDPProcessor internal error");
return nullptr;
}
// If this object was created from an RTCSessionDescription, toRTCSessionDescription will return
// that same instance but with an updated sdp. It is used for RTCPeerConnection's description
// atributes (e.g. localDescription and pendingLocalDescription).
if (m_rtcDescription) {
m_rtcDescription->setSdp(sdpString);
return m_rtcDescription;
}
return RTCSessionDescription::create(m_type, sdpString);
}
const String& MediaEndpointSessionDescription::typeString() const
{
switch (m_type) {
case RTCSessionDescription::SdpType::Offer:
return offerString();
case RTCSessionDescription::SdpType::Pranswer:
return pranswerString();
case RTCSessionDescription::SdpType::Answer:
return answerString();
case RTCSessionDescription::SdpType::Rollback:
return rollbackString();
}
ASSERT_NOT_REACHED();
return emptyString();
}
bool MediaEndpointSessionDescription::isLaterThan(MediaEndpointSessionDescription* other) const
{
return !other || configuration()->sessionVersion() > other->configuration()->sessionVersion();
}
} // namespace WebCore
#endif // ENABLE(WEB_RTC)
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