Create PNG Image from raw png data

[abhilashk_cse]

Is it possible to create PNG image from raw png bytes data?

[hybrid]

Hmm

[abhilashk_cse]

I dont mind whether it is PNG or JPEG. Please check this out http://www.andrewewhite.net/wordpress/2 ... er-in-c-c/

If somebody can read the data from memory buffer and create the Image it will be great.

[DtD]

I think Hybrid was hmming at the fact that you look like a spam bot.

If you're not a spam bot, then look around a little better next time
http://irrlicht.sourceforge.net/docu/cl ... 666c8436c0

~David

[hybrid]

No, I was just wondering why it is so difficult to create a PNG image from PNG bytes. For me this sounds like just dumping the bytes into a file. Now it looks as if the pixel data (ARGB or so) should be written to a PNG file or whatever format. That's the job of the IImageWriter classes, so just use those. Code can be found in the examples/Demo.

[Nox]

To be a bit more precise one way to go:

Code: Select all

IImage* img = driver->createImage(ECF_A8R8G8B8, dimension2du(width, height);
memcpy(img->lock(), data, sizeofdata);
img->unlock();
driver->writeImageToFile(img, "dummy.png");

[sudi]

To be a bit more precise one way to go:

Code: Select all

IImage* img = driver->createImage(ECF_A8R8G8B8, dimension2du(width, height);
memcpy(img->lock(), data, sizeofdata);
img->unlock();
driver->writeImageToFile(img, "dummy.png");

won't work! bc this doesn't expect png format.

you will have to create a memory read file and pass that to the image loader function. but right now i am to lazy to look up the code.

EDIT: ok..well

Code: Select all

//name the file something *.png so the irrlicht loader knows its a png
IReadFile* file = filesystem->createMemoryReadFile(YourMemory, Length, "something.png", false);
IImage* myImage = videoDriver->createImageFromFile(file);

//then add a texture
videoDriver->addTexture("myNewPngTexture.png", myImage);