PXL_DeepChannelList.h

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/*
 * 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:        PXL_DeepChannelList.h (PXL Library, C++)
 *
 * COMMENTS:
 */

#ifndef __PXL_DeepChannelList__
#define __PXL_DeepChannelList__

#include "PXL_API.h"
#include <UT/UT_IntrusivePtr.h>
#include <UT/UT_StringArray.h>
#include "PXL_Forward.h"

class PXL_API PXL_DeepChannelList
    : public UT_IntrusiveRefCounter<PXL_DeepChannelList>
{
public:
    class ChannelInfo
    {
    public:
        ChannelInfo(const UT_StringHolder &name, int size, int offset,
                bool ord=false)
            : myName(name)
            , myTupleSize(size)
            , myOffset(offset)
            , myOrdinal(ord)
        {
        }
        bool    operator==(const ChannelInfo  &i) const
        {
            return myName == i.myName
                && myTupleSize == i.myTupleSize
                && myOffset == i.myOffset
                && myOrdinal == i.myOrdinal;
        }
        bool    operator!=(const ChannelInfo &i) const { return !(*this == i); }
        const UT_StringHolder   &name() const { return myName; }
        int                      tupleSize() const { return myTupleSize; }
        int                      offset() const { return myOffset; }
        bool                     isOrdinal() const { return myOrdinal; }
    private:
        UT_StringHolder myName;
        int             myTupleSize;
        int             myOffset;
        bool            myOrdinal;
    };
     PXL_DeepChannelList()
         : myChannels()
         , myMaxSize(0)
         , myTotalSize(0)
     {}

    /// Add a channel to the channel list
    void        addChannel(const UT_StringHolder &name, int size,
                        bool ord=false)
                {
                    myChannels.append(ChannelInfo(name, size, myTotalSize,ord));
                    myMaxSize = SYSmax(myMaxSize, size);
                    myTotalSize += size;
                }

    /// @{
    /// Comparison
    bool        isEqual(const PXL_DeepChannelList &src) const;
    bool        operator==(const PXL_DeepChannelList &s) { return isEqual(s); }
    bool        operator!=(const PXL_DeepChannelList &s) { return !isEqual(s); }
    /// @}

    /// Number of channels in the channel list
    int         channelCount() const    { return myChannels.entries(); }

    /// Return the name of the given channel
    const UT_StringHolder       &name(int i) const
                                        { return myChannels(i).name(); }
    /// Return tuple size of the given channel
    int                          tupleSize(int i) const
                                        { return myChannels(i).tupleSize(); }
    /// Return the "offset" of a given channel.  This assumes a linear array of
    /// interleaved channel data.
    int                          offset(int i) const
                                        { return myChannels(i).offset(); }
    /// Return whether the channel data can be interpolated
    bool                        isOrdinal(int i) const
                                        { return myChannels(i).isOrdinal(); }
    /// Return the maximum tuple size of all channels
    int                          maxSize() const        { return myMaxSize; }
    /// Return the sum of the sizes of all channels
    int                          totalSize() const      { return myTotalSize; }

    /// Return -1 if channel isn't found
    int                 findChannel(const char *name) const;

    /// Dump the channel list to stdout
    void                dump(const char *msg="") const;
private:
    UT_Array<ChannelInfo>       myChannels;
    int                         myMaxSize;
    int                         myTotalSize;
};

#endif