| /* |
| * Copyright (C) 2012, Intel Corporation. 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. |
| */ |
| |
| #ifndef AudioBasicInspectorNode_h |
| #define AudioBasicInspectorNode_h |
| |
| #include "modules/webaudio/AudioNode.h" |
| |
| namespace blink { |
| |
| class BaseAudioContext; |
| class ExceptionState; |
| |
| // AudioBasicInspectorNode is an AudioNode with one input and one output where |
| // the output might not necessarily connect to another node's input. |
| // If the output is not connected to any other node, then the |
| // AudioBasicInspectorNode's processIfNecessary() function will be called |
| // automatically by BaseAudioContext before the end of each render quantum so |
| // that it can inspect the audio stream. |
| class AudioBasicInspectorHandler : public AudioHandler { |
| public: |
| AudioBasicInspectorHandler(NodeType, |
| AudioNode&, |
| float sampleRate, |
| unsigned outputChannelCount); |
| |
| // AudioHandler |
| void pullInputs(size_t framesToProcess) final; |
| void checkNumberOfChannelsForInput(AudioNodeInput*) final; |
| |
| void updatePullStatus(); |
| |
| private: |
| // When setting to true, AudioBasicInspectorHandler will be pulled |
| // automaticlly by BaseAudioContext before the end of each render quantum. |
| bool m_needAutomaticPull; |
| }; |
| |
| class AudioBasicInspectorNode : public AudioNode { |
| protected: |
| explicit AudioBasicInspectorNode(BaseAudioContext& context) |
| : AudioNode(context) {} |
| |
| private: |
| // TODO(tkent): Should AudioBasicInspectorNode override other variants of |
| // connect() and disconnect()? |
| AudioNode* connect(AudioNode*, |
| unsigned outputIndex, |
| unsigned inputIndex, |
| ExceptionState&) final; |
| void disconnect(unsigned outputIndex, ExceptionState&) final; |
| }; |
| |
| } // namespace blink |
| |
| #endif // AudioBasicInspectorNode_h |