Implement BaseAudioContext

third_party/WebKit/Source/modules/webaudio/AudioNode.cpp

 /*
  * 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 "modules/webaudio/AudioNode.h"
 #include "bindings/core/v8/ExceptionState.h"
 #include "core/dom/ExceptionCode.h"
 #include "core/inspector/InstanceCounters.h"
-#include "modules/webaudio/AbstractAudioContext.h"
 #include "modules/webaudio/AudioNodeInput.h"
 #include "modules/webaudio/AudioNodeOutput.h"
 #include "modules/webaudio/AudioParam.h"
+#include "modules/webaudio/BaseAudioContext.h"
 #include "wtf/Atomics.h"
 
 #if DEBUG_AUDIONODE_REFERENCES
 #include <stdio.h>
 #endif
 
 namespace blink {
 
 AudioHandler::AudioHandler(NodeType nodeType, AudioNode& node, float sampleRate)
     : m_isInitialized(false)
@@ skipping 59 matching lines @@
         output->dispose();
     m_node = nullptr;
 }
 
 AudioNode* AudioHandler::node() const
 {
     ASSERT(isMainThread());
     return m_node;
 }
 
-AbstractAudioContext* AudioHandler::context() const
+BaseAudioContext* AudioHandler::context() const
 {
     return m_context;
 }
 
 String AudioHandler::nodeTypeName() const
 {
     switch (m_nodeType) {
     case NodeTypeDestination:
         return "AudioDestinationNode";
     case NodeTypeOscillator:
@@ skipping 77 matching lines @@
 }
 
 unsigned long AudioHandler::channelCount()
 {
     return m_channelCount;
 }
 
 void AudioHandler::setChannelCount(unsigned long channelCount, ExceptionState& exceptionState)
 {
     ASSERT(isMainThread());
-    AbstractAudioContext::AutoLocker locker(context());
+    BaseAudioContext::AutoLocker locker(context());
 
-    if (channelCount > 0 && channelCount <= AbstractAudioContext::maxNumberOfChannels()) {
+    if (channelCount > 0 && channelCount <= BaseAudioContext::maxNumberOfChannels()) {
         if (m_channelCount != channelCount) {
             m_channelCount = channelCount;
             if (m_channelCountMode != Max)
                 updateChannelsForInputs();
         }
     } else {
         exceptionState.throwDOMException(
             NotSupportedError,
             ExceptionMessages::indexOutsideRange<unsigned long>(
                 "channel count",
                 channelCount,
                 1,
                 ExceptionMessages::InclusiveBound,
-                AbstractAudioContext::maxNumberOfChannels(),
+                BaseAudioContext::maxNumberOfChannels(),
                 ExceptionMessages::InclusiveBound));
     }
 }
 
 String AudioHandler::channelCountMode()
 {
     switch (m_channelCountMode) {
     case Max:
         return "max";
     case ClampedMax:
         return "clamped-max";
     case Explicit:
         return "explicit";
     }
     ASSERT_NOT_REACHED();
     return "";
 }
 
 void AudioHandler::setChannelCountMode(const String& mode, ExceptionState& exceptionState)
 {
     ASSERT(isMainThread());
-    AbstractAudioContext::AutoLocker locker(context());
+    BaseAudioContext::AutoLocker locker(context());
 
     ChannelCountMode oldMode = m_channelCountMode;
 
     if (mode == "max") {
         m_newChannelCountMode = Max;
     } else if (mode == "clamped-max") {
         m_newChannelCountMode = ClampedMax;
     } else if (mode == "explicit") {
         m_newChannelCountMode = Explicit;
     } else {
@@ skipping 12 matching lines @@
     case AudioBus::Discrete:
         return "discrete";
     }
     ASSERT_NOT_REACHED();
     return "";
 }
 
 void AudioHandler::setChannelInterpretation(const String& interpretation, ExceptionState& exceptionState)
 {
     ASSERT(isMainThread());
-    AbstractAudioContext::AutoLocker locker(context());
+    BaseAudioContext::AutoLocker locker(context());
 
     if (interpretation == "speakers") {
         m_channelInterpretation = AudioBus::Speakers;
     } else if (interpretation == "discrete") {
         m_channelInterpretation = AudioBus::Discrete;
     } else {
         ASSERT_NOT_REACHED();
     }
 }
 
@@ skipping 90 matching lines @@
 void AudioHandler::unsilenceOutputs()
 {
     for (auto& output : m_outputs)
         output->bus()->clearSilentFlag();
 }
 
 void AudioHandler::enableOutputsIfNecessary()
 {
     if (m_isDisabled && m_connectionRefCount > 0) {
         ASSERT(isMainThread());
-        AbstractAudioContext::AutoLocker locker(context());
+        BaseAudioContext::AutoLocker locker(context());
 
         m_isDisabled = false;
         for (auto& output : m_outputs)
             output->enable();
     }
 }
 
 void AudioHandler::disableOutputsIfNecessary()
 {
     // Disable outputs if appropriate. We do this if the number of connections is 0 or 1. The case
@@ skipping 106 matching lines @@
 unsigned AudioHandler::numberOfOutputChannels() const
 {
     // This should only be called for ScriptProcessorNodes which are the only nodes where you can
     // have an output with 0 channels.  All other nodes have have at least one output channel, so
     // there's no reason other nodes should ever call this function.
     DCHECK(0) << "numberOfOutputChannels() not valid for node type " << getNodeType();
     return 1;
 }
 // ----------------------------------------------------------------
 
-AudioNode::AudioNode(AbstractAudioContext& context)
+AudioNode::AudioNode(BaseAudioContext& context)
     : m_context(context)
     , m_handler(nullptr)
 {
     ThreadState::current()->registerPreFinalizer(this);
 }
 
 void AudioNode::dispose()
 {
     ASSERT(isMainThread());
-    AbstractAudioContext::AutoLocker locker(context());
+    BaseAudioContext::AutoLocker locker(context());
     handler().dispose();
-    if (context()->contextState() == AbstractAudioContext::Running)
+    if (context()->contextState() == BaseAudioContext::Running)
         context()->deferredTaskHandler().addRenderingOrphanHandler(m_handler.release());
 }
 
 void AudioNode::setHandler(PassRefPtr<AudioHandler> handler)
 {
     ASSERT(handler);
     m_handler = handler;
 }
 
 AudioHandler& AudioNode::handler() const
 {
     return *m_handler;
 }
 
 DEFINE_TRACE(AudioNode)
 {
     visitor->trace(m_context);
     visitor->trace(m_connectedNodes);
     visitor->trace(m_connectedParams);
     RefCountedGarbageCollectedEventTargetWithInlineData<AudioNode>::trace(visitor);
 }
 
-AbstractAudioContext* AudioNode::context() const
+BaseAudioContext* AudioNode::context() const
 {
     return m_context;
 }
 
 AudioNode* AudioNode::connect(AudioNode* destination, unsigned outputIndex, unsigned inputIndex, ExceptionState& exceptionState)
 {
     ASSERT(isMainThread());
-    AbstractAudioContext::AutoLocker locker(context());
+    BaseAudioContext::AutoLocker locker(context());
 
     if (context()->isContextClosed()) {
         exceptionState.throwDOMException(
             InvalidStateError,
             "Cannot connect after the context has been closed.");
         return nullptr;
     }
 
     if (!destination) {
         exceptionState.throwDOMException(
@@ skipping 41 matching lines @@
 
     // Let context know that a connection has been made.
     context()->incrementConnectionCount();
 
     return destination;
 }
 
 void AudioNode::connect(AudioParam* param, unsigned outputIndex, ExceptionState& exceptionState)
 {
     ASSERT(isMainThread());
-    AbstractAudioContext::AutoLocker locker(context());
+    BaseAudioContext::AutoLocker locker(context());
 
     if (context()->isContextClosed()) {
         exceptionState.throwDOMException(
             InvalidStateError,
             "Cannot connect after the context has been closed.");
         return;
     }
 
     if (!param) {
         exceptionState.throwDOMException(
@@ skipping 46 matching lines @@
     if (!output.isConnectedToAudioParam(param.handler()))
         return false;
     output.disconnectAudioParam(param.handler());
     m_connectedParams[outputIndex]->remove(&param);
     return true;
 }
 
 void AudioNode::disconnect()
 {
     ASSERT(isMainThread());
-    AbstractAudioContext::AutoLocker locker(context());
+    BaseAudioContext::AutoLocker locker(context());
 
     // Disconnect all outgoing connections.
     for (unsigned i = 0; i < numberOfOutputs(); ++i)
         disconnectAllFromOutput(i);
 }
 
 void AudioNode::disconnect(unsigned outputIndex, ExceptionState& exceptionState)
 {
     ASSERT(isMainThread());
-    AbstractAudioContext::AutoLocker locker(context());
+    BaseAudioContext::AutoLocker locker(context());
 
     // Sanity check on the output index.
     if (outputIndex >= numberOfOutputs()) {
         exceptionState.throwDOMException(
             IndexSizeError,
             ExceptionMessages::indexOutsideRange(
                 "output index",
                 outputIndex,
                 0u,
                 ExceptionMessages::InclusiveBound,
                 numberOfOutputs() - 1,
                 ExceptionMessages::InclusiveBound));
         return;
     }
     // Disconnect all outgoing connections from the given output.
     disconnectAllFromOutput(outputIndex);
 }
 
 void AudioNode::disconnect(AudioNode* destination, ExceptionState& exceptionState)
 {
     ASSERT(isMainThread());
-    AbstractAudioContext::AutoLocker locker(context());
+    BaseAudioContext::AutoLocker locker(context());
 
     unsigned numberOfDisconnections = 0;
 
     // FIXME: Can this be optimized? ChannelSplitter and ChannelMerger can have
     // 32 ports and that requires 1024 iterations to validate entire connections.
     for (unsigned outputIndex = 0; outputIndex < numberOfOutputs(); ++outputIndex) {
         for (unsigned inputIndex = 0; inputIndex < destination->handler().numberOfInputs(); ++inputIndex) {
             if (disconnectFromOutputIfConnected(outputIndex, *destination, inputIndex))
                 numberOfDisconnections++;
         }
     }
 
     // If there is no connection to the destination, throw an exception.
     if (numberOfDisconnections == 0) {
         exceptionState.throwDOMException(
             InvalidAccessError,
             "the given destination is not connected.");
         return;
     }
 }
 
 void AudioNode::disconnect(AudioNode* destination, unsigned outputIndex, ExceptionState& exceptionState)
 {
     ASSERT(isMainThread());
-    AbstractAudioContext::AutoLocker locker(context());
+    BaseAudioContext::AutoLocker locker(context());
 
     if (outputIndex >= numberOfOutputs()) {
         // The output index is out of range. Throw an exception.
         exceptionState.throwDOMException(
             IndexSizeError,
             ExceptionMessages::indexOutsideRange(
                 "output index",
                 outputIndex,
                 0u,
                 ExceptionMessages::InclusiveBound,
@@ skipping 14 matching lines @@
     if (numberOfDisconnections == 0) {
         exceptionState.throwDOMException(
             InvalidAccessError,
             "output (" + String::number(outputIndex) + ") is not connected to the given destination.");
     }
 }
 
 void AudioNode::disconnect(AudioNode* destination, unsigned outputIndex, unsigned inputIndex, ExceptionState& exceptionState)
 {
     ASSERT(isMainThread());
-    AbstractAudioContext::AutoLocker locker(context());
+    BaseAudioContext::AutoLocker locker(context());
 
     if (outputIndex >= numberOfOutputs()) {
         exceptionState.throwDOMException(
             IndexSizeError,
             ExceptionMessages::indexOutsideRange(
                 "output index",
                 outputIndex,
                 0u,
                 ExceptionMessages::InclusiveBound,
                 numberOfOutputs() - 1,
@@ skipping 19 matching lines @@
         exceptionState.throwDOMException(
             InvalidAccessError,
             "output (" + String::number(outputIndex) + ") is not connected to the input (" + String::number(inputIndex) + ") of the destination.");
         return;
     }
 }
 
 void AudioNode::disconnect(AudioParam* destinationParam, ExceptionState& exceptionState)
 {
     ASSERT(isMainThread());
-    AbstractAudioContext::AutoLocker locker(context());
+    BaseAudioContext::AutoLocker locker(context());
 
     // The number of disconnection made.
     unsigned numberOfDisconnections = 0;
 
     // Check if the node output is connected the destination AudioParam.
     // Disconnect if connected and increase |numberOfDisconnectios| by 1.
     for (unsigned outputIndex = 0; outputIndex < handler().numberOfOutputs(); ++outputIndex) {
         if (disconnectFromOutputIfConnected(outputIndex, *destinationParam))
             numberOfDisconnections++;
     }
 
     // Throw an exception when there is no valid connection to the destination.
     if (numberOfDisconnections == 0) {
         exceptionState.throwDOMException(
             InvalidAccessError,
             "the given AudioParam is not connected.");
         return;
     }
 }
 
 void AudioNode::disconnect(AudioParam* destinationParam, unsigned outputIndex, ExceptionState& exceptionState)
 {
     ASSERT(isMainThread());
-    AbstractAudioContext::AutoLocker locker(context());
+    BaseAudioContext::AutoLocker locker(context());
 
     if (outputIndex >= handler().numberOfOutputs()) {
         // The output index is out of range. Throw an exception.
         exceptionState.throwDOMException(
             IndexSizeError,
             ExceptionMessages::indexOutsideRange(
                 "output index",
                 outputIndex,
                 0u,
                 ExceptionMessages::InclusiveBound,
                 numberOfOutputs() - 1,
                 ExceptionMessages::InclusiveBound));
         return;
     }
 
     // If the output index is valid, proceed to disconnect.
     if (!disconnectFromOutputIfConnected(outputIndex, *destinationParam)) {
         exceptionState.throwDOMException(
             InvalidAccessError,
             "specified destination AudioParam and node output (" + String::number(outputIndex) + ") are not connected.");
         return;
     }
 }
 
 void AudioNode::disconnectWithoutException(unsigned outputIndex)
 {
     ASSERT(isMainThread());
-    AbstractAudioContext::AutoLocker locker(context());
+    BaseAudioContext::AutoLocker locker(context());
 
     // Sanity check input and output indices.
     if (outputIndex >= handler().numberOfOutputs())
         return;
     disconnectAllFromOutput(outputIndex);
 }
 
 unsigned AudioNode::numberOfInputs() const
 {
     return handler().numberOfInputs();
@@ skipping 47 matching lines @@
 void AudioNode::didAddOutput(unsigned numberOfOutputs)
 {
     m_connectedNodes.append(nullptr);
     ASSERT_UNUSED(numberOfOutputs, numberOfOutputs == m_connectedNodes.size());
     m_connectedParams.append(nullptr);
     ASSERT_UNUSED(numberOfOutputs, numberOfOutputs == m_connectedParams.size());
 }
 
 } // namespace blink