summaryrefslogtreecommitdiff
path: root/chromium/third_party/WebKit/Source/core/platform/audio/ReverbConvolver.h
diff options
context:
space:
mode:
Diffstat (limited to 'chromium/third_party/WebKit/Source/core/platform/audio/ReverbConvolver.h')
-rw-r--r--chromium/third_party/WebKit/Source/core/platform/audio/ReverbConvolver.h96
1 files changed, 0 insertions, 96 deletions
diff --git a/chromium/third_party/WebKit/Source/core/platform/audio/ReverbConvolver.h b/chromium/third_party/WebKit/Source/core/platform/audio/ReverbConvolver.h
deleted file mode 100644
index 9c2616b3f89..00000000000
--- a/chromium/third_party/WebKit/Source/core/platform/audio/ReverbConvolver.h
+++ /dev/null
@@ -1,96 +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.
- * 3. Neither the name of Apple Computer, Inc. ("Apple") 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 APPLE 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 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 ReverbConvolver_h
-#define ReverbConvolver_h
-
-#include "core/platform/audio/AudioArray.h"
-#include "core/platform/audio/DirectConvolver.h"
-#include "core/platform/audio/FFTConvolver.h"
-#include "core/platform/audio/ReverbAccumulationBuffer.h"
-#include "core/platform/audio/ReverbConvolverStage.h"
-#include "core/platform/audio/ReverbInputBuffer.h"
-#include "wtf/OwnPtr.h"
-#include "wtf/RefCounted.h"
-#include "wtf/Threading.h"
-#include "wtf/ThreadingPrimitives.h"
-#include "wtf/Vector.h"
-
-namespace WebCore {
-
-class AudioChannel;
-
-class ReverbConvolver {
-public:
- // maxFFTSize can be adjusted (from say 2048 to 32768) depending on how much precision is necessary.
- // For certain tweaky de-convolving applications the phase errors add up quickly and lead to non-sensical results with
- // larger FFT sizes and single-precision floats. In these cases 2048 is a good size.
- // If not doing multi-threaded convolution, then should not go > 8192.
- ReverbConvolver(AudioChannel* impulseResponse, size_t renderSliceSize, size_t maxFFTSize, size_t convolverRenderPhase, bool useBackgroundThreads);
- ~ReverbConvolver();
-
- void process(const AudioChannel* sourceChannel, AudioChannel* destinationChannel, size_t framesToProcess);
- void reset();
-
- size_t impulseResponseLength() const { return m_impulseResponseLength; }
-
- ReverbInputBuffer* inputBuffer() { return &m_inputBuffer; }
-
- bool useBackgroundThreads() const { return m_useBackgroundThreads; }
- void backgroundThreadEntry();
-
- size_t latencyFrames() const;
-private:
- Vector<OwnPtr<ReverbConvolverStage> > m_stages;
- Vector<OwnPtr<ReverbConvolverStage> > m_backgroundStages;
- size_t m_impulseResponseLength;
-
- ReverbAccumulationBuffer m_accumulationBuffer;
-
- // One or more background threads read from this input buffer which is fed from the realtime thread.
- ReverbInputBuffer m_inputBuffer;
-
- // First stage will be of size m_minFFTSize. Each next stage will be twice as big until we hit m_maxFFTSize.
- size_t m_minFFTSize;
- size_t m_maxFFTSize;
-
- // But don't exceed this size in the real-time thread (if we're doing background processing).
- size_t m_maxRealtimeFFTSize;
-
- // Background thread and synchronization
- bool m_useBackgroundThreads;
- ThreadIdentifier m_backgroundThread;
- bool m_wantsToExit;
- bool m_moreInputBuffered;
- mutable Mutex m_backgroundThreadLock;
- mutable ThreadCondition m_backgroundThreadCondition;
-};
-
-} // namespace WebCore
-
-#endif // ReverbConvolver_h