stbrumme / toojpeg Goto Github PK

How to do it if I want to write it in class variable? There is conflict with class member and WRITE_ONE_BYTE.

It would be nice to add a CMakeLists to the library in order to simplify the use of this lib with bigger projects.

Hello,
Please I need to use your repo and use lena.PNG as input image, so I read the image in this way, but this not correct how can read the image in correct way?

ifstream im;
im.open("lena.PNG",std::ios_base::binary);
if (im.is_open())
{
cout<< "function success\n";
}
else
{
cout<< "unable to open file";
}
//get length of file:
im.seekg(0, im.end);
int n = im.tellg();
im.seekg (0, im.beg);
//allocate memory:
///char* image = new char[n];
const auto width  = 512;
const auto height = 512;
  // RGB: one byte each for red, green, blue
const auto bytesPerPixel = 3;
  // allocate memory
  auto image = new  char[width * height * bytesPerPixel];
//read data as a block:
im.read( (image), n);

why not use some thing like

struct color_rgb {
    uint8_t r, g, b;
};

It would ease effort, as algorithms like std::fill and std::generate can be used.

When i tried to compile, this message error message showed up in toojped.h (i already tried to use C++11, but it does't work)

Do you have any plans to add stride support for the input buffer?

does toojpeg support strided memory rows ?

I found your library searching for in memory compression/decompression.
But toojpeg only supports writing the image, not the other way round.
Is there any plan to add the read method to the library ?

Feature idea: allowing the image to be written line by line, so we don't need to allocate a large chunk of memory first.

Thanks for the project. I like its cleanliness.
Is there a way to reverse the result from TooJpeg::writeJpeg?
E.g.

char org = [100*100*3];  //The input raw image
...
std::vector<char> enc;
//fputc() is the set byte function set to enc
...
auto ok = TooJpeg::writeJpeg(fputc, org, 100, 100, true, 95, true);
...
char recon = [100*100*3]; //The reconstructed image
TooJpeg::readJpeg(enc, ...) //???

I'm not that literate with c++.

Would you be able to supply a sample program showing how to save a simple file? I would like to use your library.