// gmic assumes float rgba in 0.0 - 255.0, thus default value
void KisGmicSimpleConvertor::convertToGmicImage(KisPaintDeviceSP dev, gmic_image<float>& gmicImage, QRect rc)
{
Q_ASSERT(!dev.isNull());
Q_ASSERT(gmicImage._spectrum == 4); // rgba
if (rc.isEmpty())
{
rc = QRect(0,0,gmicImage._width, gmicImage._height);
}
const KoColorSpace *rgbaFloat32bitcolorSpace = KoColorSpaceRegistry::instance()->colorSpace(RGBAColorModelID.id(),
Float32BitsColorDepthID.id(),
KoColorSpaceRegistry::instance()->rgb8()->profile());
Q_CHECK_PTR(rgbaFloat32bitcolorSpace);
int greenOffset = gmicImage._width * gmicImage._height;
int blueOffset = greenOffset * 2;
int alphaOffset = greenOffset * 3;
KoColorConversionTransformation::Intent renderingIntent = KoColorConversionTransformation::internalRenderingIntent();
KoColorConversionTransformation::ConversionFlags conversionFlags = KoColorConversionTransformation::internalConversionFlags();
const KoColorSpace * colorSpace = dev->colorSpace();
KisRandomConstAccessorSP it = dev->createRandomConstAccessorNG(0,0);
int optimalBufferSize = 64; // most common numContiguousColumns, tile size?
quint8 * floatRGBApixel = new quint8[rgbaFloat32bitcolorSpace->pixelSize() * optimalBufferSize];
quint32 pixelSize = rgbaFloat32bitcolorSpace->pixelSize();
int pos = 0;
for (int y = 0; y < rc.height(); y++)
{
int x = 0;
while (x < rc.width())
{
it->moveTo(x, y);
qint32 numContiguousColumns = qMin(it->numContiguousColumns(x), optimalBufferSize);
numContiguousColumns = qMin(numContiguousColumns, rc.width() - x);
colorSpace->convertPixelsTo(it->rawDataConst(), floatRGBApixel, rgbaFloat32bitcolorSpace, numContiguousColumns, renderingIntent, conversionFlags);
pos = y * gmicImage._width + x;
for (qint32 bx = 0; bx < numContiguousColumns; bx++)
{
memcpy(gmicImage._data + pos ,floatRGBApixel + bx * pixelSize , 4);
memcpy(gmicImage._data + pos + greenOffset ,floatRGBApixel + bx * pixelSize + 4, 4);
memcpy(gmicImage._data + pos + blueOffset ,floatRGBApixel + bx * pixelSize + 8, 4);
memcpy(gmicImage._data + pos + alphaOffset ,floatRGBApixel + bx * pixelSize + 12, 4);
pos++;
}
x += numContiguousColumns;
}
}
delete [] floatRGBApixel;
}
void KisGmicSimpleConvertor::convertToGmicImageFast(KisPaintDeviceSP dev, CImg< float >& gmicImage, QRect rc)
{
KoColorTransformation * pixelToGmicPixelFormat = createTransformation(dev->colorSpace());
if (pixelToGmicPixelFormat == 0)
{
dbgPlugins << "Fall-back to slow color conversion method";
convertToGmicImage(dev, gmicImage, rc);
return;
}
if (rc.isEmpty())
{
dbgPlugins << "Image rectangle is empty! Using supplied gmic layer dimension";
rc = QRect(0,0,gmicImage._width, gmicImage._height);
}
qint32 x = rc.x();
qint32 y = rc.y();
qint32 width = rc.width();
qint32 height = rc.height();
width = width < 0 ? 0 : width;
height = height < 0 ? 0 : height;
const qint32 numChannels = 4;
int greenOffset = gmicImage._width * gmicImage._height;
int blueOffset = greenOffset * 2;
int alphaOffset = greenOffset * 3;
QVector<float *> planes;
planes.append(gmicImage._data);
planes.append(gmicImage._data + greenOffset);
planes.append(gmicImage._data + blueOffset);
planes.append(gmicImage._data + alphaOffset);
KisRandomConstAccessorSP it = dev->createRandomConstAccessorNG(dev->x(), dev->y());
int tileWidth = it->numContiguousColumns(dev->x());
int tileHeight = it->numContiguousRows(dev->y());
Q_ASSERT(tileWidth == 64);
Q_ASSERT(tileHeight == 64);
const KoColorSpace *rgbaFloat32bitcolorSpace = KoColorSpaceRegistry::instance()->colorSpace(RGBAColorModelID.id(),
Float32BitsColorDepthID.id(),
KoColorSpaceRegistry::instance()->rgb8()->profile());
Q_CHECK_PTR(rgbaFloat32bitcolorSpace);
const qint32 dstPixelSize = rgbaFloat32bitcolorSpace->pixelSize();
const qint32 srcPixelSize = dev->pixelSize();
quint8 * dstTile = new quint8[rgbaFloat32bitcolorSpace->pixelSize() * tileWidth * tileHeight];
qint32 dataY = 0;
qint32 imageX = x;
qint32 imageY = y;
it->moveTo(imageX, imageY);
qint32 rowsRemaining = height;
while (rowsRemaining > 0) {
qint32 dataX = 0;
imageX = x;
qint32 columnsRemaining = width;
qint32 numContiguousImageRows = it->numContiguousRows(imageY);
qint32 rowsToWork = qMin(numContiguousImageRows, rowsRemaining);
qint32 convertedTileY = tileHeight - rowsToWork;
Q_ASSERT(convertedTileY >= 0);
while (columnsRemaining > 0) {
qint32 numContiguousImageColumns = it->numContiguousColumns(imageX);
qint32 columnsToWork = qMin(numContiguousImageColumns, columnsRemaining);
qint32 convertedTileX = tileWidth - columnsToWork;
Q_ASSERT(convertedTileX >= 0);
const qint32 dataIdx = dataX + dataY * width;
const qint32 dstTileIndex = convertedTileX + convertedTileY * tileWidth;
const qint32 tileRowStride = (tileWidth - columnsToWork) * dstPixelSize;
const qint32 srcTileRowStride = (tileWidth - columnsToWork) * srcPixelSize;
it->moveTo(imageX, imageY);
quint8 *tileItStart = dstTile + dstTileIndex * dstPixelSize;
// transform tile row by row
quint8 *dstTileIt = tileItStart;
quint8 *srcTileIt = const_cast<quint8*>(it->rawDataConst());
qint32 row = rowsToWork;
while (row > 0)
{
pixelToGmicPixelFormat->transform(srcTileIt, dstTileIt , columnsToWork);
srcTileIt += columnsToWork * srcPixelSize;
srcTileIt += srcTileRowStride;
dstTileIt += columnsToWork * dstPixelSize;
dstTileIt += tileRowStride;
row--;
}
// here we want to copy floats to dstTile, so tileItStart has to point to float buffer
qint32 channelSize = sizeof(float);
for(qint32 i=0; i<numChannels;i++)
{
float * planeIt = planes[i] + dataIdx;
qint32 dataStride = (width - columnsToWork);
quint8* tileIt = tileItStart;
for (qint32 row = 0; row < rowsToWork; row++) {
for (int col = 0; col < columnsToWork; col++) {
memcpy(planeIt, tileIt, channelSize);
tileIt += dstPixelSize;
planeIt += 1;
}
tileIt += tileRowStride;
planeIt += dataStride;
}
// skip channel in tile: red, green, blue, alpha
tileItStart += channelSize;
}
imageX += columnsToWork;
dataX += columnsToWork;
columnsRemaining -= columnsToWork;
}
imageY += rowsToWork;
dataY += rowsToWork;
rowsRemaining -= rowsToWork;
}
delete [] dstTile;
delete pixelToGmicPixelFormat;
}
