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#include <cvd/byte.h>
#include <cvd/colourspace_convert.h>
#include <cvd/colourspaces.h>
#include <cvd/image.h>
#include <cvd/image_io.h>
#include <cvd/rgb.h>
#include <iostream>
#include <sstream>
using namespace std;
using namespace CVD;
template <typename T>
Image<T> create_bayer(const ImageRef& size, const BasicImage<byte>& pattern)
{
assert(pattern.size() == ImageRef(2, 2));
Image<T> result(size);
for(int y = 0; y < size.y; y += 2)
{
for(int x = 0; x < size.x; x += 2)
{
BasicImage<T> sub = result.sub_image(ImageRef(x, y), ImageRef(2, 2));
reinterpret_cast<BasicImage<byte>&>(sub).copy_from(pattern);
}
}
return result;
}
template <typename T>
inline ostream& operator<<(ostream& out, const Image<T>& im)
{
const ImageRef& size = im.size();
for(int y = 0; y < size.y; y += 1)
{
for(int x = 0; x < size.x; x += 1)
{
out << int(im[y][x]) << " ";
}
out << endl;
}
return out;
}
template <typename T>
Image<Rgb<byte>> create_test(const ImageRef& size, const Image<byte>& red, const Image<byte>& green, const Image<byte>& blue)
{
Image<Rgb<byte>> result(size.dot_times(ImageRef(3, 2)));
Image<byte> gray = create_bayer<byte>(size, red);
Image<T> bayer = create_bayer<T>(size, red);
result.sub_image(ImageRef(0, 0).dot_times(size), size).copy_from(convert_image<Rgb<byte>>(gray));
result.sub_image(ImageRef(0, 1).dot_times(size), size).copy_from(convert_image<Rgb<byte>>(bayer));
gray = create_bayer<byte>(size, green);
bayer = create_bayer<T>(size, green);
result.sub_image(ImageRef(1, 0).dot_times(size), size).copy_from(convert_image<Rgb<byte>>(gray));
result.sub_image(ImageRef(1, 1).dot_times(size), size).copy_from(convert_image<Rgb<byte>>(bayer));
gray = create_bayer<byte>(size, blue);
bayer = create_bayer<T>(size, blue);
result.sub_image(ImageRef(2, 0).dot_times(size), size).copy_from(convert_image<Rgb<byte>>(gray));
result.sub_image(ImageRef(2, 1).dot_times(size), size).copy_from(convert_image<Rgb<byte>>(bayer));
return result;
}
int main(int argc, char** argv)
{
const ImageRef size(8, 8);
const byte value = (argc > 1) ? atoi(argv[1]) : 255;
ostringstream sout;
sout << int(value) << ".png";
const string postfix = sout.str();
Image<byte> red(ImageRef(2, 2));
Image<byte> green(ImageRef(2, 2));
Image<byte> blue(ImageRef(2, 2));
// bayer rggb
// RGRGRG
// GBGBGB
// RGRGRG
// GBGBGB
red[0][0] = value;
red[0][1] = 0;
red[1][0] = 0;
red[1][1] = 0;
green[0][0] = 0;
green[0][1] = value;
green[1][0] = value;
green[1][1] = 0;
blue[0][0] = 0;
blue[0][1] = 0;
blue[1][0] = 0;
blue[1][1] = value;
Image<Rgb<byte>> rggb = create_test<bayer_rggb>(size, red, green, blue);
// img_save(rggb, "rggb" + postfix);
// bayer gbrg
// GBGBGB
// RGRGRG
// GBGBGB
// RGRGRG
red[0][0] = 0;
red[0][1] = 0;
red[1][0] = value;
red[1][1] = 0;
green[0][0] = value;
green[0][1] = 0;
green[1][0] = 0;
green[1][1] = value;
blue[0][0] = 0;
blue[0][1] = value;
blue[1][0] = 0;
blue[1][1] = 0;
Image<Rgb<byte>> gbrg = create_test<bayer_gbrg>(size, red, green, blue);
// img_save(gbrg, "gbrg" + postfix);
// bayer bggr
// BGBGBG
// GRGRGR
// BGBGBG
// GRGRGR
red[0][0] = 0;
red[0][1] = 0;
red[1][0] = 0;
red[1][1] = value;
green[0][0] = 0;
green[0][1] = value;
green[1][0] = value;
green[1][1] = 0;
blue[0][0] = value;
blue[0][1] = 0;
blue[1][0] = 0;
blue[1][1] = 0;
Image<Rgb<byte>> bggr = create_test<bayer_bggr>(size, red, green, blue);
// img_save(bggr, "bggr" + postfix);
// bayer grbg
// GRGRGR
// BGBGBG
// GRGRGR
// BGBGBG
red[0][0] = 0;
red[0][1] = value;
red[1][0] = 0;
red[1][1] = 0;
green[0][0] = value;
green[0][1] = 0;
green[1][0] = 0;
green[1][1] = value;
blue[0][0] = 0;
blue[0][1] = 0;
blue[1][0] = value;
blue[1][1] = 0;
Image<Rgb<byte>> grbg = create_test<bayer_grbg>(size, red, green, blue);
// img_save(grbg, "grbg" + postfix);
Image<Rgb<byte>> all(ImageRef(3, 4 * 2).dot_times(size));
all.sub_image(ImageRef(0, 0).dot_times(size), rggb.size()).copy_from(rggb);
all.sub_image(ImageRef(0, 2).dot_times(size), gbrg.size()).copy_from(gbrg);
all.sub_image(ImageRef(0, 4).dot_times(size), bggr.size()).copy_from(bggr);
all.sub_image(ImageRef(0, 6).dot_times(size), grbg.size()).copy_from(grbg);
img_save(all, "all" + postfix);
return 0;
}
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