webkitgtk-2.16.5HEADwebkitgtk-2.16.5master

1 files changed, 116 insertions, 0 deletions

diff --git a/Source/WebCore/Modules/mediastream/MediaEndpointSessionDescription.cpp b/Source/WebCore/Modules/mediastream/MediaEndpointSessionDescription.cpp
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index 000000000..ac5b2f0d8
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+++ b/Source/WebCore/Modules/mediastream/MediaEndpointSessionDescription.cpp
@@ -0,0 +1,116 @@
+/*
+ * 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)