Inventor/algorithms/SoConversion.h

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**=======================================================================*/
/*=======================================================================
** Author      : VSG (MMM YYYY)
**=======================================================================*/
#if !defined SOCONVERSION_H
#define SOCONVERSION_H

#include <Inventor/SbString.h>
#include <Inventor/SbDataType.h>

#include <Inventor/STL/vector>

#include <Inventor/algorithms/SoAlgorithmsDefs.h>

#if defined(__i386__) || defined(__amd64__) || defined(__x86_64__) || defined(_M_IX86) || defined(_M_AMD64)
#   define HAS_SSE
#endif

#if ( __GNUC__ == 3 && __GNUC_MINOR__ == 2 )
#undef HAS_SSE
#endif

#ifdef HAS_SSE
#   include <mmintrin.h>
#   include <xmmintrin.h>
#   include <emmintrin.h>
#endif

class SoBufferObject;
class SoCpuBufferObject;

class   SoConversion
{
private:
  virtual ~SoConversion();


  static void initClass();


  static void exitClass();

public:
  SoConversion();

  virtual int convert(
    SoBufferObject* sourceBufferObject, const SbDataType src_type,
    SoBufferObject* targetBufferObject, const SbDataType dst_type, const size_t size );


  int convert(
    SoCpuBufferObject* sourceBufferObject, const SbDataType src_type,
    SoCpuBufferObject* targetBufferObject, const SbDataType dst_type, const size_t size );

  virtual int convertFloatToRGBA(
    SoBufferObject* sourceBufferObject,
    SoBufferObject* targetBufferObject,
    const size_t size, const float dataMin, const float dataMax );


  int convertFloatToRGBA(
    SoCpuBufferObject* sourceBufferObject,
    SoCpuBufferObject* targetBufferObject,
    const size_t size, const float dataMin, const float dataMax );

private:
  int convertToFloat(
    SoBufferObject* sourceBufferObject, const SbDataType src_type,
    SoBufferObject* targetBufferObject, const size_t size );


  int convertToFloat(
    SoCpuBufferObject* sourceBufferObject, const SbDataType src_type,
    SoCpuBufferObject* targetBufferObject, const size_t size );


  int convertToUChar(
    SoBufferObject* sourceBufferObject, SbDataType src_type,
    SoBufferObject* targetBufferObject, const size_t size );


  int convertToUChar(
    SoCpuBufferObject* sourceBufferObject, SbDataType src_type,
    SoCpuBufferObject* targetBufferObject, const size_t size );

private:

  enum MappingMethod {
    MAP_TO_CENTER,

    MAP_TO_BORDER
  };

  virtual void mapDataRangeToIndex(
    SoBufferObject *sourceBufferObject, const SbDataType src_type,
    SoBufferObject *targetBufferObject, const SbDataType dst_type,
    const double dataRangeMin, const double dataRangeMax, const bool dataRangeMap,
    const int shift, const int offset );


  virtual void mapDataToIndex(
    SoBufferObject *sourceBufferObject, const SbDataType src_type,
    SoBufferObject *targetBufferObject, const SbDataType dst_type,
    const int numSigBits, const int shift, const int offset );


  virtual void mapDataRangeToRgba(
    SoBufferObject *sourceBufferObject, const SbDataType src_type,
    SoBufferObject *targetBufferObject, const SbDataType dst_type,
    const double dataRangeMin, const double dataRangeMax, const bool dataRangeMap,
    const int shift, const int offset,
    SoBufferObject *rgbaBufferObject, const int numRgba, MappingMethod rgbaMapping );


  virtual void mapDataToRgba(
    SoBufferObject *sourceBufferObject, const SbDataType src_type,
    SoBufferObject *targetBufferObject, const SbDataType dst_type,
    const int numSigBits, const int shift, const int offset,
    SoBufferObject *rgbaBufferObject, const int numRgba, MappingMethod mapping );

  static void convertByteToBitSet(SoCpuBufferObject* sourceBufferObject,SoCpuBufferObject* targetBufferObject);

  static void convertBitSetToByte(SoCpuBufferObject* sourceBufferObject,SoCpuBufferObject* targetBufferObject);

private:

 // IN template CPU dataRangeToIndex version
  template <typename DataClassIn>
  static void cpuMapDataRangeToIndex(const void *srcData, void *dstData,
    const size_t bufferSize, const SbDataType::DataType dataTypeDst,
    const double dataRangeMin, const double dataRangeMax, const bool dataRangeMap,
    const int shift, const int offset
    );


  // IN/OUT template CPU version
  template <typename DataClassIn, typename DataClassOut>
  static void cpuMapDataRangeToIndexTempl(
    const void *src, void *dst, const size_t bufferSize,
    const double dataRangeMin, const double dataRangeMax, const bool dataRangeMap,
    const int shift, const int offset
    );

#ifdef HAS_SSE
  // IN/OUT template CPU SSE2 version
  template <typename DataClassIn, typename DataClassOut>
  static void cpuMapDataRangeToIndexTemplSSE(
    const void *src, void *dst, const size_t bufferSize,
    const double dataRangeMin, const double dataRangeMax, const bool dataRangeMap,
    const int shift, const int offset
    );

  template <typename DataClassIn>
  static void SSE_loadRegister( DataClassIn*& ptr, __m128& reg );

  template <typename DataClassOut>
  static void SSE_unloadRegister( __m128& regA, __m128& regB, DataClassOut*& ptr );
#endif

  // IN template CPU dataRangeToRgba version
  template <typename DataClassIn>
  static void cpuMapDataRangeToRgba(
    const void *src, void *dst, const size_t bufferSize,
    const double dataRangeMin, const double dataRangeMax, const bool dataRangeMap,
    const int shift, const int offset,
    const unsigned int *rgba, const int numRgba, MappingMethod mapping
    );


  // IN template CPU dataToIndex version
  template <typename DataClassIn>
  static void cpuMapDataToIndex(const void *srcData, void *dstData,
    const size_t bufferSize, const SbDataType::DataType dataTypeDst,
    const int numSigBits, const int shift, const int offset
    );


  // IN/OUT template CPU version
  template <typename DataClassIn, typename DataClassOut>
  static void cpuMapDataToIndexTempl(
    const void *src, void *dst, const size_t bufferSize,
    const int numSigBits, const int shift, const int offset
    );


  // IN template CPU dataToRgba version
  template <typename DataClassIn>
  static void cpuMapDataToRgba(
    const void *src, void *dst, const size_t bufferSize,
    const int numSigBits, const int shift, const int offset,
    const unsigned int *rgba, const int numRgba, MappingMethod mapping
    );

private:
#if defined(HAS_SSE)
  static void convertBitSetToByteSSE(unsigned char* packedTile, unsigned char* unpackedTile, uint64_t size);
#endif
  static void convertBitSetToByteStd(unsigned char* packedTile, unsigned char* unpackedTile, uint64_t size);


  static bool s_useSSE;

};

#endif //SOCONVERSION_H

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Open Inventor Toolkit reference manual, generated on 12 Feb 2024
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