void Image::saveFrameBufferToFile(const std::string &_fname, int _x, int _y, int _width, int _height,ImageModes _mode)
{
GLenum format=GL_RGB;
int size=3;
if(_mode == ImageModes::RGBA)
{
size=4;
format=GL_RGBA;
}
int realWidth=_width-_x;
int realHeight=_height-_y;
NGL_ASSERT(_x<_width && _y<_height);
std::unique_ptr<unsigned char []> data( new unsigned char [realWidth * realHeight *size]);
glReadPixels(_x,_y,realWidth,realHeight,format,GL_UNSIGNED_BYTE,data.get());
#if defined(USEQIMAGE)
QImage::Format qformat=QImage::Format::Format_RGB888;
if(_mode == ImageModes::RGBA)
{
qformat=QImage::Format::Format_RGBA8888;
}
QImage image(data.get(),realWidth,realHeight,qformat);
image=image.mirrored(false,true);
image.save(_fname.c_str());
#endif
#if defined(USEOIIO)
OpenImageIO::ImageOutput *out = OpenImageIO::ImageOutput::create (_fname.c_str());
OpenImageIO::ImageSpec spec (realWidth, realHeight, size, OpenImageIO::TypeDesc::UINT8);
int scanlinesize = realWidth * size;
out->open (_fname.c_str(), spec);
// note this flips the image vertically on writing
// (see http://www.openimageio.org/openimageio.pdf pg 20 for details)
out->write_image (OpenImageIO::TypeDesc::UINT8,
data.get() + (realHeight-1)*scanlinesize,
OpenImageIO::AutoStride,
-scanlinesize,OpenImageIO::AutoStride);
out->close ();
#endif
#if defined(USEIMAGEMAGIC)
Magick::Image output(realWidth,realHeight,
size==3 ? "RGB" : "RGBA",
Magick::CharPixel,data.get()
);
// set the output image depth to 16 bit
output.depth(16);
// write the file
output.write(_fname.c_str());
#endif
}
bool writeImageFile(std::string filename, int xres, int yres, int channels, deep::ImageDataType * data) {
/*
* WARNING: This makes the assumption that the folder to write the image exists.
* It will crash if the filename is pointing to a folder that doesn't exist.
*/
OpenImageIO::ImageOutput * out = OpenImageIO::ImageOutput::create(filename);
if (!out) {
return false;
}
OpenImageIO::ImageSpec spec(xres, yres, channels, OpenImageIO::TypeDesc::DOUBLE); //FLOAT);
out->open(filename.c_str(), spec);
out->write_image(OpenImageIO::TypeDesc::DOUBLE, data); //FLOAT, data);
out->close();
delete out;
return true;
}