CL_DynamicTimeWarp.h

Go to the documentation of this file.

/*
 * PROPRIETARY INFORMATION.  This software is proprietary to
 * Side Effects Software Inc., and is not to be reproduced,
 * transmitted, or disclosed in any way without written permission.
 *
 * NAME:        CL_DynamicTimeWarp.h ( Clip Library, C++)
 *
 * COMMENTS:
 *
 */

#ifndef __CL_DynamicTimeWarp_h__
#define __CL_DynamicTimeWarp_h__

#include "CL_API.h"

#include "CL_TimeWarp.h"

#include <UT/UT_Interrupt.h>
#include <UT/UT_SharedPtr.h>
#include <UT/UT_UniquePtr.h>
#include <UT/UT_WorkBuffer.h>

class UT_OStream;
class CL_Clip;
class CL_Track;

class CL_API CL_DynamicTimeWarp : public CL_TimeWarp
{
public:
    CL_DynamicTimeWarp();
    CL_DynamicTimeWarp(const CL_DynamicTimeWarp &dtw);
    ~CL_DynamicTimeWarp() override;
    
    void     warpClip(bool loop_reference,
                      UT_WorkBuffer &error_msg);

    fpreal   warpSubClip(int src_start, int src_length,
                         int ref_start, int ref_length,
                         bool compute_warp,
                         UT_AutoInterrupt &boss);

    bool     boundMaxStep(int max_step);
    bool     boundMaxStall(int max_stall);
    void     unboundWarp();

    bool     computeWeightFnRotations();
    bool     computeWeightFnEulerDistance();

private:
    
    void     findShortestStep(int s, int r);
    bool     computeShortestPaths(int num_loops, bool do_parallel,
                                  UT_AutoInterrupt &boss);
    void     computeWarpMap(int num_loops, bool loop_reference);    
    
    class WarpPath
    {
        public:
            fpreal weight;
            int    s;
            int    r;
    };
    WarpPath &getShortPath(int src_frame, int ref_frame);
    fpreal   &getWeight(int src_frame, int ref_frame);

private:
    
    int  mySrcStart;
    int  mySrcLength;
    int  myRefStart;
    int  myRefLength;

    int  myMaxStep;
    bool myMaxStepIsBounded;
    int  myMaxStall;
    bool myMaxStallIsBounded;

    UT_SharedPtr<fpreal>     myWeight;
    UT_UniquePtr<WarpPath[]> myShortPaths;
};

#endif