quality_monitor.h
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- /* ***** BEGIN LICENSE BLOCK *****
- *
- * $Id: quality_monitor.h,v 1.3 2005/01/30 05:11:41 gabest Exp $ $Name: $
- *
- * Version: MPL 1.1/GPL 2.0/LGPL 2.1
- *
- * The contents of this file are subject to the Mozilla Public License
- * Version 1.1 (the "License"); you may not use this file except in compliance
- * with the License. You may obtain a copy of the License at
- * http://www.mozilla.org/MPL/
- *
- * Software distributed under the License is distributed on an "AS IS" basis,
- * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License for
- * the specific language governing rights and limitations under the License.
- *
- * The Original Code is BBC Research and Development code.
- *
- * The Initial Developer of the Original Code is the British Broadcasting
- * Corporation.
- * Portions created by the Initial Developer are Copyright (C) 2004.
- * All Rights Reserved.
- *
- * Contributor(s): Thomas Davies (Original Author)
- *
- * Alternatively, the contents of this file may be used under the terms of
- * the GNU General Public License Version 2 (the "GPL"), or the GNU Lesser
- * Public License Version 2.1 (the "LGPL"), in which case the provisions of
- * the GPL or the LGPL are applicable instead of those above. If you wish to
- * allow use of your version of this file only under the terms of the either
- * the GPL or LGPL and not to allow others to use your version of this file
- * under the MPL, indicate your decision by deleting the provisions above
- * and replace them with the notice and other provisions required by the GPL
- * or LGPL. If you do not delete the provisions above, a recipient may use
- * your version of this file under the terms of any one of the MPL, the GPL
- * or the LGPL.
- * ***** END LICENSE BLOCK ***** */
- #ifndef _QUALITY_MONITOR_H_
- #define _QUALITY_MONITOR_H_
- #include <libdirac_common/common.h>
- #include <libdirac_common/frame.h>
- #include <libdirac_common/wavelet_utils.h>
- namespace dirac
- {
- //! Class to monitor the quality of pictures and adjust coding parameters appropriately
- class QualityMonitor
- {
- public:
- //! Constructor. Sets up initial Lagrangian values
- /*
- Constructor sets up initial Lagrangian values.
- */
- QualityMonitor(EncoderParams& ep,
- const SeqParams& sparams );
- ////////////////////////////////////////////////////////////
- // //
- // Assumes default copy constructor, assignment = //
- // and destructor //
- ////////////////////////////////////////////////////////////
- //! Update the quality factors, returning true if we need to recode
- /*!
- Update the quality factors, returning true if we need to recode
- param ld_frame the locally-decoded frame
- param orig_frame the original frame
- param count the number of times we've tried to code this frame before
- */
- bool UpdateModel(const Frame& ld_frame, const Frame& orig_frame ,const int count);
- //! Reset the quality factors (say if there's been a cut)
- void ResetAll();
- private:
- //functions
- //! Use the model parameters to calculate the resulting Lagrangian parameters
- void CalcNewLambdas(const FrameSort fsort, const double slope, const double offset);
- //! Calculate the quality of coded wrt original picture
- double QualityVal( const PicArray& coded_data ,
- const PicArray& orig_data ,
- double cpd ,
- const FrameSort fsort );
- //member variables//
- ////////////////////
- //! A reference to the encoder parameters
- EncoderParams& m_encparams;
- //! The chroma format
- const ChromaFormat m_cformat;
- //! The true picture width, minus padding
- const int m_true_xl;
- //! The true picture height, minus padding
- const int m_true_yl;
- // target quality values for each frame type
- OneDArray<double> m_target_quality;
- // weighted PSNR values for last of each frame type
- OneDArray<double> m_last_quality;
- /* Default Model parameters for quality wrt to log10(lambda)
- Model is :
- quality = offset + slope * log10( lambda )
- for each lambda parameter type.
- Default parameters will be used if it's not possible to measure
- them, and updated using measured data
- */
- OneDArray<double> m_slope;
- OneDArray<double> m_offset;
- //! Lagrangian parameters for the last I, L1 and L2 frames
- OneDArray<double> m_last_lambda;
- //! The Lagrangian ME parameters
- double m_L1_me_lambda, m_L2_me_lambda;
- //! The ratio of Lagrangian ME parameters to frame motion estimation parameters
- double m_me_ratio;
- };
- } // namespace dirac
- #endif