Source/WebCore/Modules/webaudio/OfflineAudioContext.cpp

/*
 * Copyright (C) 2012, Google Inc. All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
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 *
 * 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
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#include "config.h"

#if ENABLE(WEB_AUDIO)

#include "OfflineAudioContext.h"

#include "Document.h"
#include "ExceptionCode.h"
#include "ScriptExecutionContext.h"

namespace WebCore {

PassRefPtr<OfflineAudioContext> OfflineAudioContext::create(ScriptExecutionContext& context, unsigned numberOfChannels, size_t numberOfFrames, float sampleRate, ExceptionCode& ec)
{
    // FIXME: add support for workers.
    if (!context.isDocument()) {
        ec = NOT_SUPPORTED_ERR;
        return 0;
    }

    Document& document = toDocument(context);

    if (numberOfChannels > 10 || !isSampleRateRangeGood(sampleRate)) {
        ec = SYNTAX_ERR;
        return 0;
    }

    RefPtr<OfflineAudioContext> audioContext(adoptRef(new OfflineAudioContext(document, numberOfChannels, numberOfFrames, sampleRate)));
    audioContext->suspendIfNeeded();
    return audioContext.release();
}

OfflineAudioContext::OfflineAudioContext(Document& document, unsigned numberOfChannels, size_t numberOfFrames, float sampleRate)
    : AudioContext(document, numberOfChannels, numberOfFrames, sampleRate)
{
}

OfflineAudioContext::~OfflineAudioContext()
{
}

} // namespace WebCore

#endif // ENABLE(WEB_AUDIO)