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 1.11 2006/07/28 13:33:16 tjdwave 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
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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 
00069     class ModeDecider
00070     {
00071 
00072     public:
00074 
00079         ModeDecider(const EncoderParams& encp );    
00080 
00082 
00085         ~ModeDecider();
00086 
00088 
00094         void DoModeDecn( const FrameBuffer& my_buffer , int frame_num , MEData& me_data);
00095 
00096     private:
00097         ModeDecider( const ModeDecider& cpy );//private, body-less copy constructor: this class should not be copied
00098         ModeDecider& operator=( const ModeDecider& rhs );//private, body-less assignment=: this class should not be assigned
00099 
00100          //functions
00101         void DoMBDecn();    //called by do_mode_decn for each MB
00102 
00104         void DoLevelDecn( int level );
00105 
00107         float DoUnitDecn( const int xpos , const int ypos , const int level );
00108 
00110         void DoME( const int xpos , const int ypos , const int level );
00111 
00112      
00114         float ModeCost( const int xindex , const int yindex , const PredMode predmode );
00115 
00117         ValueType GetDCPred( int xblock , int yblock );
00118 
00120         float GetDCVar( const ValueType dc_val , const ValueType dc_pred);
00121 
00122          // Member data
00123         FrameSort fsort;
00124 
00126         const EncoderParams& m_encparams;
00127 
00129         float m_lambda;
00130 
00132         OneDArray<float> m_level_factor;
00133 
00134 
00136         OneDArray<float> m_mode_factor;
00137 
00139         OneDArray< MEData* > m_me_data_set;
00140 
00141         const PicArray* m_pic_data;
00142         const PicArray* m_ref1_updata;
00143         const PicArray* m_ref2_updata;
00144         int num_refs;
00145 
00146         IntraBlockDiff* m_intradiff;
00147         BiBlockDiff* m_bicheckdiff;
00148 
00149         //position variables, used in all the mode decisions
00150         int m_xmb_loc,m_ymb_loc;    //coords of the current MB
00151 
00152     };
00153 
00154 } // namespace dirac
00155 
00156 #endif

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