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-rw-r--r--WebCore/platform/audio/AudioProcessor.h75
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diff --git a/WebCore/platform/audio/AudioProcessor.h b/WebCore/platform/audio/AudioProcessor.h
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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:
- *
- * * Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * * 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.
- * * Neither the name of Google Inc. nor the names of its
- * contributors may be used to endorse or promote products derived from
- * this software without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND 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 THE COPYRIGHT
- * OWNER OR 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 AudioProcessor_h
-#define AudioProcessor_h
-
-namespace WebCore {
-
-class AudioBus;
-
-// AudioProcessor is an abstract base class representing an audio signal processing object with a single input and a single output,
-// where the number of input channels equals the number of output channels. It can be used as one part of a complex DSP algorithm,
-// or as the processor for a basic (one input - one output) AudioNode.
-
-class AudioProcessor {
-public:
- AudioProcessor(double sampleRate)
- : m_initialized(false)
- , m_sampleRate(sampleRate)
- {
- }
-
- virtual ~AudioProcessor() { }
-
- // Full initialization can be done here instead of in the constructor.
- virtual void initialize() = 0;
- virtual void uninitialize() = 0;
-
- // Processes the source to destination bus. The number of channels must match in source and destination.
- virtual void process(AudioBus* source, AudioBus* destination, size_t framesToProcess) = 0;
-
- // Resets filter state
- virtual void reset() = 0;
-
- virtual void setNumberOfChannels(unsigned) = 0;
-
- bool isInitialized() const { return m_initialized; }
-
- double sampleRate() const { return m_sampleRate; }
-
-protected:
- bool m_initialized;
- double m_sampleRate;
-};
-
-} // namespace WebCore
-
-#endif // AudioProcessor_h