# Dirac - A Video Codec

Created by the British Broadcasting Corporation.

# me_mode_decn.h

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    00001 /* ***** BEGIN LICENSE BLOCK *****
    00002 *
    00003 * $Id: me_mode_decn.h,v 1.10 2005/09/27 13:01:50 tjdwave Exp $ $Name: Dirac_0_6_0 $
    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 _ME_MODE_DECN_H_
    00039 #define _ME_MODE_DECN_H_
    00040
    00041 #include <libdirac_common/motion.h>
    00042 #include <libdirac_motionest/block_match.h>
    00043
    00044 namespace dirac
    00045 {
    00046     class FrameBuffer;
    00047
    00049
    00073     class ModeDecider
    00074     {
    00075
    00076     public:
    00078
    00083         ModeDecider(const EncoderParams& encp );
    00084
    00086
    00089         ~ModeDecider();
    00090
    00092
    00098         void DoModeDecn( const FrameBuffer& my_buffer , int frame_num , MEData& me_data);
    00099
    00100     private:
    00101         ModeDecider( const ModeDecider& cpy );//private, body-less copy constructor: this class should not be copied
    00102         ModeDecider& operator=( const ModeDecider& rhs );//private, body-less assignment=: this class should not be assigned
    00103
    00104          //functions
    00105         void DoMBDecn();    //called by do_mode_decn for each MB
    00106
    00108         void DoLevelDecn( int level );
    00109
    00111         float DoUnitDecn( const int xpos , const int ypos , const int level );
    00112
    00114         float DoCommonMode( PredMode& predmode , const int level);
    00115
    00117         void DoME( const int xpos , const int ypos , const int level );
    00118
    00119
    00121         float ModeCost( const int xindex , const int yindex , const PredMode predmode );
    00122
    00124         ValueType GetDCPred( int xblock , int yblock );
    00125
    00127         float GetDCVar( const ValueType dc_val , const ValueType dc_pred);
    00128
    00129          // Member data
    00130         FrameSort fsort;
    00131
    00133         const EncoderParams& m_encparams;
    00134
    00136         float m_lambda;
    00137
    00139         OneDArray<float> m_level_factor;
    00140
    00141
    00143         OneDArray<float> m_mode_factor;
    00144
    00146         OneDArray< MEData* > m_me_data_set;
    00147
    00148         const PicArray* m_pic_data;
    00149         const PicArray* m_ref1_updata;
    00150         const PicArray* m_ref2_updata;
    00151         int num_refs;
    00152
    00153         IntraBlockDiff* m_intradiff;
    00154         BiBlockDiff* m_bicheckdiff;
    00155
    00156         //position variables, used in all the mode decisions
    00157         int m_xmb_loc,m_ymb_loc;    //coords of the current MB
    00158
    00159     };
    00160
    00161 } // namespace dirac
    00162
    00163 #endif

© 2004 British Broadcasting Corporation. Dirac code licensed under the Mozilla Public License (MPL) Version 1.1.
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