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# quality_monitor.h

    00001 /* ***** BEGIN LICENSE BLOCK *****
    00002 *
    00003 * $Id: quality_monitor.h,v 1.3 2005/01/30 05:11:41 gabest Exp $ $Name:  $
    00004 *
    00005 * Version: MPL 1.1/GPL 2.0/LGPL 2.1
    00006 *
    00007 * The contents of this file are subject to the Mozilla Public License
    00008 * Version 1.1 (the "License"); you may not use this file except in compliance
    00009 * with the License. You may obtain a copy of the License at
    00010 * http://www.mozilla.org/MPL/
    00011 *
    00012 * Software distributed under the License is distributed on an "AS IS" basis,
    00013 * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License for
    00014 * the specific language governing rights and limitations under the License.
    00015 *
    00016 * The Original Code is BBC Research and Development code.
    00017 *
    00018 * The Initial Developer of the Original Code is the British Broadcasting
    00019 * Corporation.
    00020 * Portions created by the Initial Developer are Copyright (C) 2004.
    00021 * All Rights Reserved.
    00022 *
    00023 * Contributor(s): Thomas Davies (Original Author)
    00024 *
    00025 * Alternatively, the contents of this file may be used under the terms of
    00026 * the GNU General Public License Version 2 (the "GPL"), or the GNU Lesser
    00027 * Public License Version 2.1 (the "LGPL"), in which case the provisions of
    00028 * the GPL or the LGPL are applicable instead of those above. If you wish to
    00029 * allow use of your version of this file only under the terms of the either
    00030 * the GPL or LGPL and not to allow others to use your version of this file
    00031 * under the MPL, indicate your decision by deleting the provisions above
    00032 * and replace them with the notice and other provisions required by the GPL
    00033 * or LGPL. If you do not delete the provisions above, a recipient may use
    00034 * your version of this file under the terms of any one of the MPL, the GPL
    00035 * or the LGPL.
    00036 * ***** END LICENSE BLOCK ***** */
    00037
    00038 #ifndef _QUALITY_MONITOR_H_
    00039 #define _QUALITY_MONITOR_H_
    00040
    00041 #include <libdirac_common/common.h>
    00042 #include <libdirac_common/frame.h>
    00043 #include <libdirac_common/wavelet_utils.h>
    00044 namespace dirac
    00045 {
    00046
    00048     class QualityMonitor
    00049     {
    00050     public:
    00051
    00053         /*
    00054            Constructor sets up initial Lagrangian values.
    00055         */
    00056         QualityMonitor(EncoderParams& ep,
    00057                        const SeqParams& sparams );
    00058
    00060         //                                                        //
    00061         //    Assumes default copy constructor,  assignment =     //
    00062         //                 and destructor                         //
    00064
    00066
    00072         bool UpdateModel(const Frame& ld_frame, const Frame& orig_frame ,const int count);
    00073
    00075         void ResetAll();
    00076
    00077     private:
    00078         //functions
    00079
    00081         void CalcNewLambdas(const FrameSort fsort, const double slope, const double offset);
    00082
    00084         double QualityVal( const PicArray& coded_data ,
    00085                                            const PicArray& orig_data ,
    00086                                            double cpd ,
    00087                                            const FrameSort fsort );
    00088
    00089         //member variables//
    00091
    00093         EncoderParams& m_encparams;
    00094
    00096         const ChromaFormat m_cformat;
    00097
    00099         const int m_true_xl;
    00100
    00102         const int m_true_yl;
    00103
    00104         // target quality values for each frame type
    00105         OneDArray<double> m_target_quality;
    00106
    00107         // weighted PSNR values for last of each frame type
    00108         OneDArray<double> m_last_quality;
    00109
    00110         /* Default Model parameters for quality wrt to log10(lambda)
    00111            Model is :
    00112                 quality = offset + slope * log10( lambda )
    00113             for each lambda parameter type.
    00114             Default parameters will be used if it's not possible to measure
    00115             them, and updated using measured data
    00116         */
    00117         OneDArray<double> m_slope;
    00118         OneDArray<double> m_offset;
    00119
    00121         OneDArray<double> m_last_lambda;
    00122
    00124         double m_L1_me_lambda, m_L2_me_lambda;
    00125
    00127         double m_me_ratio;
    00128
    00129     };
    00130
    00131 } // namespace dirac
    00132
    00133 #endif