TIL/TIL_FileSequence.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.
 *
 * Produced by:
 *
 *      Mark Alexander
 *      Side Effects
 *      477 Richmond Street West
 *      Toronto, Ontario
 *      Canada   M5V 3E7
 *      416-504-9876
 *
 * NAME:        TIL_FileSequence.h
 *
 * COMMENTS:
 *      Class for deal with sequences of images (determining start/end, etc).
 */
#ifndef TIL_FILE_SEQUENCE_H
#define TIL_FILE_SEQUENCE_H

#include "TIL_API.h"
#include <sys/types.h>
#include <UT/UT_String.h>
#include <UT/UT_Rect.h>
#include <UT/UT_BitArray.h>
#include <UT/UT_PtrArray.h>
#include <UT/UT_RefArray.h>
#include <UT/UT_IntArray.h>

#include "TIL_Defines.h"

class IMG_Stat;
class TIL_Sequence;
class til_FrameInfo;

class TIL_API TIL_FileSequence
{
public:
                 TIL_FileSequence();
    virtual     ~TIL_FileSequence();

    TIL_FileSequence &operator=(const TIL_FileSequence &);

    // returns 1 if the pattern is different than the current pattern, else 0.
    int          setNewPattern(const char *filepattern);

    // fills the sequence with the start/end range, size, data type, etc.
    // returns 1 if successful, and 0 if the sequence doesn't exist.
    int          getFileInfo(TIL_Sequence &seq_info,
                             int override_size = 0,
                             int override_range = 0,
                             TIL_DataFormat *depth_override = 0,
                             int use_rgba = 0,
                             bool useframe = false, int frame = 0,
                             bool clearseq = true,
                             bool coloronly = false,
                             bool fractional = false);

    int          getSingleFileInfo(const char *name, TIL_Sequence &seq_info,
                                   bool override_size = true,
                                   TIL_DataFormat *override_depth = 0,
                                   int use_rgba = 0,
                                   bool clearseq = true,
                                   bool coloronly = false);

    // returns the frame range. The filename is only used if the frame range
    // hasn't been determined yet (by calling getFileInfo). 
    bool         getFrameRange(int &start, int &end, bool fractional=false);

    // gets the filename at a specific frame. Returns 0 if the frame doesn't
    // exist. If frame == -MAX_INT, the first frame is returned.
    bool         getFilename(UT_String &name, int frame = 0x80000000);

    bool         doesFrameExist(const UT_String &framename) const;
    bool         doesFrameExist(int frame) const;
    int          getClosestFrame(int to_frame) const;
    int          getClosestPrevFrame(int to_frame) const;
    int          getClosestNextFrame(int to_frame) const;

    // attempts to determine the frame step of the files by analyzing the gaps.
    // only call after getFileInfo.
    int          getFrameStep();

    // call this to determine whether or not the specified sequence was
    // only a single frame.  Only call this after first calling
    // getFileInfo() or getSingleFileInfo().
    bool         isSingleFrame() const { return myFrameSingle ? 1 : 0; }

    int          getNumFrames() const { return myFrames.entries(); }
    
    // call this to determine whether the sequence is really a movie
    // file which contains the frames.  Only call this after first 
    // calling getFileInfo() or getSingleFileInfo().  Also note that
    // this is the only method of this class that understands movie
    // files because they aren't file sequences.  You should use the
    // API on IMG_File to query and read frames.
    bool         isMovieFile() const;

    int          isTopFirstImage() const { return myIsTopFirst; }
    IMG_ColorModel getColorModel() const { return myColorModel; }

    // returns true if the digits was set by the user (ie $4F), and sets the
    // digits parm to the number of file index digits. If nothing was specified
    // this returns false.
    bool         getFileDigits(int &digits) const;
    void         setFileDigits(int digits);

    int          getFractionFrameIndex(float frame) const;

    UT_InclusiveRect getBounds(int frame, bool &streak);
    UT_InclusiveRect getBounds(const char *filename, bool &streak);

    // Removes the frame from the list.
    void         markBadFrame(int frame);
    // resets the list of bad frames.
    void         resetBadFrames();

    // returns the list of bad frames.
    const UT_IntArray &getBadFrames() const { return myBadFrames; }

    void         setComment(const UT_String &comment, int frame);
    void         getComment(UT_String &comment, int frame) const;
    
private:
    int          getInfoForFilename(const char *name, TIL_Sequence &seq_info,
                                    bool override_size = true,
                                    TIL_DataFormat *override_depth = 0,
                                    int use_rgba = 0,
                                    bool clearseq = true,
                                    bool coloronly = false);

    int          lookupRange(char sepchar, bool fractional);
    void         removeBadFrames();
    void         reorganizeFractions();
    void         clearBoundsCache();
    UT_InclusiveRect getBoundsByIndex(int index, bool &streak);
    
    static int   compareFileToRange(const char *filename, void *me);
    static int   checkExist(const char *filename, void *me);
        
    UT_String                    myFilePattern;
    UT_String                    myMatchPattern;
    int                          myFileNumberDigits;
    IMG_Stat                    *myStat;
    IMG_ColorModel               myColorModel;
    int                          myIsTopFirst;

    // file range lookup info
    int                          myFrameStart;
    int                          myFrameSingle;
    int                          myFrameEnd;
    int                          myFrameInit;
    int                          myFrameHasFraction;
    float                        myFrameFractionScale;
    bool                         myFractional;
    UT_PtrArray<til_FrameInfo *> myFrames;
    UT_IntArray                  myBadFrames;
    UT_String                    myBase, mySuffix;
    UT_String                    myPath;
    bool                         myUserSpecifiedDigits;
    UT_BitArray                  myCachedBoundsFrame;
    UT_RefArray<UT_InclusiveRect> myCachedBounds;
    UT_BitArray                  myCachedBoundsStreak;
};

#endif

---