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/*
* Copyright (C) 2015 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.
*/
// @conditional=ENABLE(MEDIA_STREAM)
// @internal
// Operation queue as specified in section 4.3.1 (WebRTC 1.0)
function enqueueOperation(peerConnection, operation)
{
"use strict";
if (!peerConnection.@operations)
peerConnection.@operations = [];
var operations = peerConnection.@operations;
function runNext() {
operations.@shift();
if (operations.length)
operations[0]();
};
return new @Promise(function (resolve, reject) {
operations.@push(function() {
operation().then(resolve, reject).then(runNext, runNext);
});
if (operations.length == 1)
operations[0]();
});
}
function createOfferOrAnswer(peerConnection, targetFunction, functionName, args)
{
"use strict";
var options = {};
if (args.length <= 1) {
// Promise mode
if (args.length && @isDictionary(args[0]))
options = args[0]
return @enqueueOperation(peerConnection, function () {
return targetFunction.@call(peerConnection, options);
});
}
// Legacy callbacks mode (2 or 3 arguments)
var successCallback = @extractCallbackArg(args, 0, "successCallback", functionName);
var errorCallback = @extractCallbackArg(args, 1, "errorCallback", functionName);
if (args.length > 2 && @isDictionary(args[2]))
options = args[2];
@enqueueOperation(peerConnection, function () {
return targetFunction.@call(peerConnection, options).then(successCallback, errorCallback);
});
}
function setLocalOrRemoteDescription(peerConnection, targetFunction, functionName, args)
{
"use strict";
if (args.length < 1)
throw new @TypeError("Not enough arguments");
var description = args[0];
if (!(description instanceof @RTCSessionDescription))
throw new @TypeError("Argument 1 ('description') to RTCPeerConnection." + functionName + " must be an instance of RTCSessionDescription");
if (args.length == 1) {
// Promise mode
return @enqueueOperation(peerConnection, function () {
return targetFunction.@call(peerConnection, description);
});
}
// Legacy callbacks mode (3 arguments)
if (args.length < 3)
throw new @TypeError("Not enough arguments");
var successCallback = @extractCallbackArg(args, 1, "successCallback", functionName);
var errorCallback = @extractCallbackArg(args, 2, "errorCallback", functionName);
@enqueueOperation(peerConnection, function () {
return targetFunction.@call(peerConnection, description).then(successCallback, errorCallback);
});
}
function extractCallbackArg(args, index, name, parentFunctionName)
{
"use strict";
var callback = args[index];
if (typeof callback !== "function")
throw new @TypeError("Argument " + (index + 1) + " ('" + name + "') to RTCPeerConnection." + parentFunctionName + " must be a Function");
return callback;
}
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