void SurfaceT<T>::copyRawRgb( const SurfaceT<T> &srcSurface, const Area &srcArea, const Vec2i &absoluteOffset )
{
const int32_t srcRowBytes = srcSurface.getRowBytes();
const int8_t srcPixelInc = srcSurface.getPixelInc();
const uint8_t srcRed = srcSurface.getChannelOrder().getRedOffset();
const uint8_t srcGreen = srcSurface.getChannelOrder().getGreenOffset();
const uint8_t srcBlue = srcSurface.getChannelOrder().getBlueOffset();
const uint8_t dstPixelInc = getPixelInc();
const uint8_t dstRed = getChannelOrder().getRedOffset();
const uint8_t dstGreen = getChannelOrder().getGreenOffset();
const uint8_t dstBlue = getChannelOrder().getBlueOffset();
int32_t width = srcArea.getWidth();
for( int32_t y = 0; y < srcArea.getHeight(); ++y ) {
const T *src = reinterpret_cast<const T*>( reinterpret_cast<const uint8_t*>( srcSurface.getData() + srcArea.x1 * srcPixelInc ) + ( srcArea.y1 + y ) * srcRowBytes );
T *dst = reinterpret_cast<T*>( reinterpret_cast<uint8_t*>( getData() + absoluteOffset.x * dstPixelInc ) + ( y + absoluteOffset.y ) * getRowBytes() );
for( int x = 0; x < width; ++x ) {
dst[dstRed] = src[srcRed];
dst[dstGreen] = src[srcGreen];
dst[dstBlue] = src[srcBlue];
src += srcPixelInc;
dst += dstPixelInc;
}
}
}
void thresholdImpl( const SurfaceT<T> &srcSurface, T value, const Area &srcArea, const ivec2 &dstLT, SurfaceT<T> *dstSurface )
{
std::pair<Area,ivec2> srcDst = clippedSrcDst( srcSurface.getBounds(), srcArea, dstSurface->getBounds(), dstLT );
const Area &area( srcDst.first );
const ivec2 &dstOffset( srcDst.second );
ptrdiff_t srcRowBytes = srcSurface.getRowBytes();
uint8_t srcPixelInc = srcSurface.getPixelInc();
uint8_t srcRedOffset = srcSurface.getRedOffset(), srcGreenOffset = srcSurface.getGreenOffset(), srcBlueOffset = srcSurface.getBlueOffset();
ptrdiff_t dstRowBytes = dstSurface->getRowBytes();
uint8_t dstPixelInc = dstSurface->getPixelInc();
uint8_t dstRedOffset = dstSurface->getRedOffset(), dstGreenOffset = dstSurface->getGreenOffset(), dstBlueOffset = dstSurface->getBlueOffset();
const T maxValue = CHANTRAIT<T>::max();
for( int32_t y = 0; y < area.getHeight(); ++y ) {
T *dstPtr = reinterpret_cast<T*>( reinterpret_cast<uint8_t*>( dstSurface->getData() + ( dstOffset.x + area.getX1() ) * dstPixelInc ) + ( y + dstOffset.y ) * dstRowBytes );
const T *srcPtr = reinterpret_cast<const T*>( reinterpret_cast<const uint8_t*>( srcSurface.getData() + area.getX1() * srcPixelInc ) + ( y + area.getY1() ) * srcRowBytes );
for( int32_t x = area.getX1(); x < area.getX2(); ++x ) {
dstPtr[dstRedOffset] = ( srcPtr[srcRedOffset] > value ) ? maxValue : 0;
dstPtr[dstGreenOffset] = ( srcPtr[srcGreenOffset] > value ) ? maxValue : 0;
dstPtr[dstBlueOffset] = ( srcPtr[srcBlueOffset] > value ) ? maxValue : 0;;
dstPtr += dstPixelInc;
srcPtr += srcPixelInc;
}
}
}
bool transparentVerticalScanline( const SurfaceT<T> &surface, int32_t column, int32_t y1, int32_t y2 )
{
const T *dstPtr = surface.getDataAlpha( Vec2i( column, y1 ) );
int32_t rowBytes = surface.getRowBytes();
for( int32_t y = y1; y < y2; ++y ) {
if( *dstPtr ) return false;
dstPtr += rowBytes;
}
return true;
}
void SurfaceT<T>::copyRawSameChannelOrder( const SurfaceT<T> &srcSurface, const Area &srcArea, const Vec2i &absoluteOffset )
{
int32_t srcRowBytes = srcSurface.getRowBytes();
int32_t srcPixelInc = srcSurface.getPixelInc();
int32_t dstPixelInc = getPixelInc();
size_t copyBytes = srcArea.getWidth() * srcPixelInc * sizeof(T);
for( int32_t y = 0; y < srcArea.getHeight(); ++y ) {
const T *srcPtr = reinterpret_cast<const T*>( reinterpret_cast<const uint8_t*>( srcSurface.getData() + srcArea.x1 * srcPixelInc ) + ( srcArea.y1 + y ) * srcRowBytes );
T *dstPtr = reinterpret_cast<T*>( reinterpret_cast<uint8_t*>( getData() + absoluteOffset.x * dstPixelInc ) + ( y + absoluteOffset.y ) * getRowBytes() );
memcpy( dstPtr, srcPtr, copyBytes );
}
}
ImageSourceSurface( const SurfaceT<T> &surface )
: ImageSource()
{
mWidth = surface.getWidth();
mHeight = surface.getHeight();
setColorModel( ImageIo::CM_RGB );
setChannelOrder( ImageIo::ChannelOrder( surface.getChannelOrder().getImageIoChannelOrder() ) );
if( boost::is_same<T,uint8_t>::value ) {
setDataType( ImageIo::UINT8 );
mSurface8u = *reinterpret_cast<const Surface8u*>( &surface ); // register reference to 'surface'
}
else if( boost::is_same<T,float>::value ) {
setDataType( ImageIo::FLOAT32 );
mSurface32f = *reinterpret_cast<const Surface32f*>( &surface ); // register reference to 'surface'
}
else
throw; // this surface seems to be a type we've never met
mRowBytes = surface.getRowBytes();
mData = reinterpret_cast<const uint8_t*>( surface.getData() );
}