motion_estimate.h
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- /* ***** BEGIN LICENSE BLOCK *****
- *
- * $Id: motion_estimate.h,v 1.2 2005/01/30 05:11:42 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 _MOTION_ESTIMATE_H_
- #define _MOTION_ESTIMATE_H_
- #include <libdirac_common/motion.h>
- namespace dirac
- {
- class FrameBuffer;
- //! Class to handle the whole motion estimation process.
- /*!
-
- Class to handle the whole motion estimation process, which works in
- three stages.
- First a pixel-accurate estimate is formed by looking at the current
- frame data and the data from the reference frame(s). Motion vectors
- are found for every block.
- Second, these pixel-accurate motion vectors are refined to sub-pixel
- accuracy. This means some sort of upconversion needs to be applied to
- the reference. This can be done by actually upconverting the reference
- to create a bigger picture or by doing some interpolation of values
- on the fly.
- Third, mode decisions have to be made. This means choosing which (if
- any) reference to use for each block, and whether to use the same
- motion vectors for groups of blocks together. A 2x2 group of blocks is
- called a sub-MB and a 4x4 group of blocks is a MB (Macroblock). All
- the MV data is organised by MB.
- */
- class MotionEstimator{
- public:
- //! Constructor
- MotionEstimator( const EncoderParams& encp );
- //! Destructor
- ~MotionEstimator(){}
- //! Do the motion estimation
- bool DoME(const FrameBuffer& my_buffer , int frame_num , MEData& me_data);
- private:
- //! Copy constructor: private, body-less - class should not be copied
- MotionEstimator( const MotionEstimator& cpy );
- //! Assignment= : //private, body-less - class should not be assigned
- MotionEstimator& operator=( const MotionEstimator& rhs );
- //! Go through all the intra blocks and extract the chroma dc values to be coded
- void SetChromaDC(const FrameBuffer& my_buffer, int frame_num, MvData& mv_data);
- //! Called by previous fn for each component
- void SetChromaDC(const PicArray& pic_data, MvData& mv_data,CompSort csort);
- //! Called by previous fn for each block
- ValueType GetChromaBlockDC(const PicArray& pic_data, int xloc,int yloc,int split);
- //! Analyses the ME data and returns true if a cut is detected, false otherwise
- bool IsACut( const MEData& ) const;
- // Member variables
- //! A local reference to the encoder parameters
- const EncoderParams& m_encparams;
- };
- } // namespace dirac
- #endif