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/*
* Copyright (C) 2010, Google Inc. 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.
*
* THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS 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 APPLE INC. OR ITS 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"
#if ENABLE(WEB_AUDIO)
#include "V8AudioContext.h"
#include "AudioBuffer.h"
#include "AudioContext.h"
#include "BindingState.h"
#include "Frame.h"
#include "V8ArrayBuffer.h"
#include "V8AudioBuffer.h"
#include "V8Binding.h"
#include <wtf/ArrayBuffer.h>
namespace WebCore {
v8::Handle<v8::Value> V8AudioContext::constructorCallbackCustom(const v8::Arguments& args)
{
Document* document = currentDocument(BindingState::instance());
RefPtr<AudioContext> audioContext;
if (!args.Length()) {
// Constructor for default AudioContext which talks to audio hardware.
ExceptionCode ec = 0;
audioContext = AudioContext::create(document, ec);
if (ec)
return setDOMException(ec, args.GetIsolate());
if (!audioContext.get())
return throwError(v8SyntaxError, "audio resources unavailable for AudioContext construction", args.GetIsolate());
} else {
// Constructor for offline (render-target) AudioContext which renders into an AudioBuffer.
// new AudioContext(in unsigned long numberOfChannels, in unsigned long numberOfFrames, in float sampleRate);
if (args.Length() < 3)
return throwNotEnoughArgumentsError(args.GetIsolate());
bool ok = false;
int32_t numberOfChannels = toInt32(args[0], ok);
if (!ok || numberOfChannels <= 0 || numberOfChannels > 10)
return throwError(v8SyntaxError, "Invalid number of channels", args.GetIsolate());
int32_t numberOfFrames = toInt32(args[1], ok);
if (!ok || numberOfFrames <= 0)
return throwError(v8SyntaxError, "Invalid number of frames", args.GetIsolate());
float sampleRate = toFloat(args[2]);
if (sampleRate <= 0)
return throwError(v8SyntaxError, "Invalid sample rate", args.GetIsolate());
ExceptionCode ec = 0;
audioContext = AudioContext::createOfflineContext(document, numberOfChannels, numberOfFrames, sampleRate, ec);
if (ec)
return setDOMException(ec, args.GetIsolate());
}
if (!audioContext.get())
return throwError(v8SyntaxError, "Error creating AudioContext", args.GetIsolate());
// Transform the holder into a wrapper object for the audio context.
v8::Handle<v8::Object> wrapper = args.Holder();
V8DOMWrapper::createDOMWrapper(audioContext.release(), &info, wrapper);
return wrapper;
}
} // namespace WebCore
#endif // ENABLE(WEB_AUDIO)
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