Imported WebKit commit 7e538425aa020340619e927792f3d895061fb54b (http://svn.webkit.org/repository/webkit/trunk@116286)

1 files changed, 0 insertions, 209 deletions

diff --git a/Source/WebCore/webaudio/AudioNodeOutput.cpp b/Source/WebCore/webaudio/AudioNodeOutput.cpp
deleted file mode 100644
index 77927b988..000000000
--- a/Source/WebCore/webaudio/AudioNodeOutput.cpp
+++ /dev/null
@@ -1,209 +0,0 @@
-/*
- * 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 "AudioNodeOutput.h"
-
-#include "AudioBus.h"
-#include "AudioContext.h"
-#include "AudioNodeInput.h"
-#include <wtf/Threading.h>
-
-namespace WebCore {
-
-AudioNodeOutput::AudioNodeOutput(AudioNode* node, unsigned numberOfChannels)
-    : m_node(node)
-    , m_numberOfChannels(numberOfChannels)
-    , m_desiredNumberOfChannels(numberOfChannels)
-    , m_actualDestinationBus(0)
-    , m_isEnabled(true)
-    , m_renderingFanOutCount(0)
-{
-    ASSERT(numberOfChannels <= AudioContext::maxNumberOfChannels());
-
-    m_internalBus = adoptPtr(new AudioBus(numberOfChannels, AudioNode::ProcessingSizeInFrames));
-    m_actualDestinationBus = m_internalBus.get();
-}
-
-void AudioNodeOutput::setNumberOfChannels(unsigned numberOfChannels)
-{
-    ASSERT(numberOfChannels <= AudioContext::maxNumberOfChannels());
-    ASSERT(context()->isGraphOwner());
-
-    m_desiredNumberOfChannels = numberOfChannels;
-
-    if (context()->isAudioThread()) {
-        // If we're in the audio thread then we can take care of it right away (we should be at the very start or end of a rendering quantum).
-        updateNumberOfChannels();
-    } else {
-        // Let the context take care of it in the audio thread in the pre and post render tasks.
-        context()->markAudioNodeOutputDirty(this);
-    }
-}
-
-void AudioNodeOutput::updateInternalBus()
-{
-    if (numberOfChannels() == m_internalBus->numberOfChannels())
-        return;
-
-    m_internalBus = adoptPtr(new AudioBus(numberOfChannels(), AudioNode::ProcessingSizeInFrames));
-
-    // This may later be changed in pull() to point to an in-place bus with the same number of channels.
-    m_actualDestinationBus = m_internalBus.get();
-}
-
-void AudioNodeOutput::updateRenderingState()
-{
-    updateNumberOfChannels();
-    m_renderingFanOutCount = fanOutCount();
-}
-
-void AudioNodeOutput::updateNumberOfChannels()
-{
-    ASSERT(context()->isAudioThread() && context()->isGraphOwner());
-
-    if (m_numberOfChannels != m_desiredNumberOfChannels) {
-        m_numberOfChannels = m_desiredNumberOfChannels;
-        updateInternalBus();
-        propagateChannelCount();
-    }
-}
-
-void AudioNodeOutput::propagateChannelCount()
-{
-    ASSERT(context()->isAudioThread() && context()->isGraphOwner());
-    
-    if (isChannelCountKnown()) {
-        // Announce to any nodes we're connected to that we changed our channel count for its input.
-        for (InputsIterator i = m_inputs.begin(); i != m_inputs.end(); ++i) {
-            AudioNodeInput* input = *i;
-            AudioNode* connectionNode = input->node();
-            connectionNode->checkNumberOfChannelsForInput(input);
-        }
-    }
-}
-
-AudioBus* AudioNodeOutput::pull(AudioBus* inPlaceBus, size_t framesToProcess)
-{
-    ASSERT(context()->isAudioThread());
-    ASSERT(m_renderingFanOutCount > 0);
-    
-    // Causes our AudioNode to process if it hasn't already for this render quantum.
-    // We try to do in-place processing (using inPlaceBus) if at all possible,
-    // but we can't process in-place if we're connected to more than one input (fan-out > 1).
-    // In this case pull() is called multiple times per rendering quantum, and the processIfNecessary() call below will
-    // cause our node to process() only the first time, caching the output in m_internalOutputBus for subsequent calls.    
-    
-    bool isInPlace = inPlaceBus && inPlaceBus->numberOfChannels() == numberOfChannels() && m_renderingFanOutCount == 1;
-
-    // Setup the actual destination bus for processing when our node's process() method gets called in processIfNecessary() below.
-    m_actualDestinationBus = isInPlace ? inPlaceBus : m_internalBus.get();
-
-    node()->processIfNecessary(framesToProcess);
-    return m_actualDestinationBus;
-}
-
-AudioBus* AudioNodeOutput::bus() const
-{
-    ASSERT(const_cast<AudioNodeOutput*>(this)->context()->isAudioThread());
-    ASSERT(m_actualDestinationBus);
-    return m_actualDestinationBus;
-}
-
-unsigned AudioNodeOutput::renderingFanOutCount() const
-{
-    return m_renderingFanOutCount;
-}
-
-unsigned AudioNodeOutput::fanOutCount()
-{
-    ASSERT(context()->isGraphOwner());
-    return m_inputs.size();
-}
-
-void AudioNodeOutput::addInput(AudioNodeInput* input)
-{
-    ASSERT(context()->isGraphOwner());
-
-    ASSERT(input);
-    if (!input)
-        return;
-
-    m_inputs.add(input);
-}
-
-void AudioNodeOutput::removeInput(AudioNodeInput* input)
-{
-    ASSERT(context()->isGraphOwner());
-
-    ASSERT(input);
-    if (!input)
-        return;
-
-    m_inputs.remove(input);
-}
-
-void AudioNodeOutput::disconnectAllInputs()
-{
-    ASSERT(context()->isGraphOwner());
-    
-    // AudioNodeInput::disconnect() changes m_inputs by calling removeInput().
-    while (!m_inputs.isEmpty()) {
-        AudioNodeInput* input = *m_inputs.begin();
-        input->disconnect(this);
-    }
-}
-
-void AudioNodeOutput::disable()
-{
-    ASSERT(context()->isGraphOwner());
-
-    if (m_isEnabled) {
-        for (InputsIterator i = m_inputs.begin(); i != m_inputs.end(); ++i) {
-            AudioNodeInput* input = *i;
-            input->disable(this);
-        }
-        m_isEnabled = false;
-    }
-}
-
-void AudioNodeOutput::enable()
-{
-    ASSERT(context()->isGraphOwner());
-
-    if (!m_isEnabled) {
-        for (InputsIterator i = m_inputs.begin(); i != m_inputs.end(); ++i) {
-            AudioNodeInput* input = *i;
-            input->enable(this);
-        }
-        m_isEnabled = true;
-    }
-}
-
-} // namespace WebCore
-
-#endif // ENABLE(WEB_AUDIO)