/* * Copyright (C) 2011 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.
*/
// Amount of input change in dB required for 1 dB of output change. // This applies to the portion of the curve above m_kneeThresholdDb (see // below). float m_ratio; float m_slope; // Inverse ratio.
// The input to output change below the threshold is linear 1:1. float m_linearThreshold; float m_dbThreshold;
// m_dbKnee is the number of dB above the threshold before we enter the // "ratio" portion of the curve. m_kneeThresholdDb = m_dbThreshold + m_dbKnee // The portion between m_dbThreshold and m_kneeThresholdDb is the "soft knee" // portion of the curve which transitions smoothly from the linear portion to // the ratio portion. float m_dbKnee; float m_kneeThreshold; float m_kneeThresholdDb; float m_ykneeThresholdDb;
// Internal parameter for the knee portion of the curve. float m_K;
};
} // namespace WebCore
#endif// DynamicsCompressorKernel_h
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