Dirac Video Codec

# Dirac - A Video Codec

Created by the British Broadcasting Corporation.

# picture_compress.h

Go to the documentation of this file.

    00001 /* ***** BEGIN LICENSE BLOCK *****
    00002 *
    00003 * $Id: picture_compress.h,v 1.7 2008/08/14 02:30:50 asuraparaju Exp $ $Name: Dirac_1_0_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 *                 Scott R Ladd,
    00025 *                 Anuradha Suraparaju
    00026 *                 Andrew Kennedy
    00027 *
    00028 * Alternatively, the contents of this file may be used under the terms of
    00029 * the GNU General Public License Version 2 (the "GPL"), or the GNU Lesser
    00030 * Public License Version 2.1 (the "LGPL"), in which case the provisions of
    00031 * the GPL or the LGPL are applicable instead of those above. If you wish to
    00032 * allow use of your version of this file only under the terms of the either
    00033 * the GPL or LGPL and not to allow others to use your version of this file
    00034 * under the MPL, indicate your decision by deleting the provisions above
    00035 * and replace them with the notice and other provisions required by the GPL
    00036 * or LGPL. If you do not delete the provisions above, a recipient may use
    00037 * your version of this file under the terms of any one of the MPL, the GPL
    00038 * or the LGPL.
    00039 * ***** END LICENSE BLOCK ***** */
    00040
    00041
    00042 #ifndef _PICTURE_COMPRESS_H_
    00043 #define _PICTURE_COMPRESS_H_
    00044
    00045 #include <libdirac_encoder/enc_queue.h>
    00046 #include <libdirac_common/common.h>
    00047 #include <libdirac_common/motion.h>
    00048 #include <libdirac_byteio/picture_byteio.h>
    00049
    00050 namespace dirac
    00051 {
    00052
    00053     class MvData;
    00054
    00056
    00061     class PictureCompressor
    00062     {
    00063     public:
    00065
    00071         PictureCompressor( EncoderParams& encp );
    00072
    00074         ~PictureCompressor( );
    00075
    00077         void PixelME( EncQueue& my_buffer , int pnum );
    00078
    00080     void CalcComplexity( EncQueue& my_buffer, int pnum , const OLBParams& olbparams );
    00081     void CalcComplexity2( EncQueue& my_buffer, int pnum );
    00082
    00084     void NormaliseComplexity( EncQueue& my_buffer, int pnum );
    00085
    00087         void SubPixelME( EncQueue& my_buffer , int pnum );
    00088
    00090         void ModeDecisionME( EncQueue& my_buffer, int pnum );
    00091
    00093         void IntraModeAnalyse( EncQueue& my_buffer, int pnum );
    00094
    00096         void MotionCompensate( EncQueue& my_buffer, int pnum, AddOrSub dirn );
    00097
    00099         void Prefilter( EncQueue& my_buffer, int pnum );
    00100
    00102         void DoDWT( EncQueue& my_buffer , int pnum, Direction dirn );
    00103
    00105
    00111         void CodeResidue(  EncQueue& my_pbuffer , int pnum , PictureByteIO* pic_byteio);
    00112
    00114         void CodeMVData( EncQueue& my_buffer, int pnum, PictureByteIO* pic_byteio);
    00115
    00117         bool IsSkipped(){ return m_skipped; }
    00118
    00120         bool IsMEDataAvail() const { return m_medata_avail; }
    00121
    00123         const MEData* GetMEData() const;
    00124
    00125     private:
    00127
    00131         PictureCompressor( const PictureCompressor& cpy );
    00132
    00134
    00138         PictureCompressor& operator=(const PictureCompressor& rhs);
    00139
    00141         void InitCoeffData( CoeffArray& coeff_data, const int xl, const int yl );
    00142
    00144         float GetCompLambda( const EncPicture& my_picture,
    00145                              const CompSort csort );
    00146
    00147         void SelectQuantisers( CoeffArray& coeff_data ,
    00148                                SubbandList& bands ,
    00149                                const float lambda,
    00150                                OneDArray<unsigned int>& est_counts,
    00151                                const CodeBlockMode cb_mode,
    00152                                const PictureParams& pp,
    00153                                const CompSort csort );
    00154
    00155         int SelectMultiQuants( CoeffArray& coeff_data ,
    00156                                SubbandList& bands ,
    00157                                const int band_num,
    00158                                const float lambda,
    00159                                const PictureParams& pp,
    00160                                const CompSort csort );
    00161
    00162         void SetupCodeBlocks( SubbandList& bands );
    00163
    00164
    00165         void AddSubAverage(CoeffArray& coeff_data,int xl,int yl,AddOrSub dirn);
    00166
    00167     private:
    00168
    00169         //member variables
    00170         // a local copy of the encoder params
    00171         EncoderParams& m_encparams;
    00172
    00173         // True if the picture has been skipped, false otherwise
    00174         bool m_skipped;
    00175
    00176         // True if we use global motion vectors, false otherwise
    00177         bool m_use_global;
    00178
    00179         // True if we use block motion vectors, false otherwise
    00180         bool m_use_block_mv;
    00181
    00182         // Prediction mode to use if we only have global motion vectors
    00183         PredMode m_global_pred_mode;
    00184
    00185         // A pointer to the current picture motion vector data
    00186     MEData* m_me_data;
    00187
    00188         // True if motion estimation data is available
    00189         bool m_medata_avail;
    00190
    00191         // True if we have detected a cut
    00192         bool m_is_a_cut;
    00193
    00194         // The original MV precision type
    00195         MVPrecisionType m_orig_prec;
    00196
    00197     };
    00198
    00199 } // namespace dirac
    00200
    00201 #endif

© 2004 British Broadcasting Corporation. Dirac code licensed under the Mozilla Public License (MPL) Version 1.1.
HTML documentation generated by Dimitri van Heesch's excellent Doxygen tool.