CWE-ou-minkata/Sources/Plasma/PubUtilLib/plPipeline/plVertCoder.h

/*==LICENSE==*

CyanWorlds.com Engine - MMOG client, server and tools
Copyright (C) 2011  Cyan Worlds, Inc.

This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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GNU General Public License for more details.

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along with this program.  If not, see <http://www.gnu.org/licenses/>.

Additional permissions under GNU GPL version 3 section 7

If you modify this Program, or any covered work, by linking or
combining it with any of RAD Game Tools Bink SDK, Autodesk 3ds Max SDK,
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*==LICENSE==*/

#ifndef plVertCoder_inc
#define plVertCoder_inc

class hsStream;

class plVertCoder
{
public:
    enum {
        kPosition,
        kWeight,
        kUVW,
        kNumFloatFields = kUVW + 8
    };

protected:

    class FloatCode
    {
    public:
        float    fOffset;
        hsBool      fAllSame;
        uint16_t      fCount;
    };

    FloatCode       fFloats[kNumFloatFields][3];

    class byteCode
    {
    public:
        uint16_t      fCount;
        uint8_t       fVal;
        uint8_t       fSame;
    };

    byteCode        fColors[4];

    static uint32_t   fCodedVerts;
    static uint32_t   fCodedBytes;
    static uint32_t   fRawBytes;
    static uint32_t   fSkippedBytes;

    inline void ICountFloats(const uint8_t* src, uint16_t maxCnt, const float quant, const uint32_t stride, float& lo, hsBool& allSame, uint16_t& count);
    inline void IEncodeFloat(hsStream* s, const uint32_t vertsLeft, const int field, const int chan, const uint8_t*& src, const uint32_t stride);
    inline void IDecodeFloat(hsStream* s, const int field, const int chan, uint8_t*& dst, const uint32_t stride);

    inline void IEncodeNormal(hsStream* s, const uint8_t*& src, const uint32_t stride);
    inline void IDecodeNormal(hsStream* s, uint8_t*& dst, const uint32_t stride);

    inline void ICountBytes(const uint32_t vertsLeft, const uint8_t* src, const uint32_t stride, uint16_t& len, uint8_t& same);
    inline void IEncodeByte(hsStream* s, const int chan, const uint32_t vertsLeft, const uint8_t*& src, const uint32_t stride);
    inline void IDecodeByte(hsStream* s, const int chan, uint8_t*& dst, const uint32_t stride);
    inline void IEncodeColor(hsStream* s, const uint32_t vertsLeft, const uint8_t*& src, const uint32_t stride);
    inline void IDecodeColor(hsStream* s, uint8_t*& dst, const uint32_t stride);

    inline void IEncode(hsStream* s, const uint32_t vertsLeft, const uint8_t*& src, const uint32_t stride, const uint8_t format);
    inline void IDecode(hsStream* s, uint8_t*& dst, const uint32_t stride, const uint8_t format);

public:
    plVertCoder();
    ~plVertCoder();

    void Clear();

    void Read(hsStream* s, uint8_t* dst, const uint8_t format, const uint32_t stride, const uint16_t numVerts);
    void Write(hsStream* s, const uint8_t* src, const uint8_t format, const uint32_t stride, const uint16_t numVerts);


    static void ClearAverage() { fCodedVerts = 0; fCodedBytes = 0; fRawBytes = 0; fSkippedBytes = 0; }
    static uint32_t CodedBytes() { return fCodedBytes; }
    static uint32_t RawBytes() { return fRawBytes; }
    static uint32_t CodedVerts() { return fCodedVerts; }
    static float AverageCodedVertSize() { return fCodedVerts ? float(fCodedBytes) / float(fCodedVerts) : 0; }
    static float AverageRawVertSize() { return fCodedVerts ? float(fRawBytes) / float(fCodedVerts) : 0; }

    static uint32_t SkippedBytes() { return fSkippedBytes; }
    static void AddSkippedBytes(uint32_t f) { fSkippedBytes += f; }
};

#endif // plVertCoder_inc