Read image from memory buffer

[AlOa]

Hi,
now simpleocv allow to read images only from file, but stb library allows to read image from memory buffer, so adding a function that allow to read images form memory is relative easy. I added this function fora personal project, I simple added a function with signature:

NCNN_EXPORT Mat imread(unsigned char *buf, int len, int flags = IMREAD_COLOR);

to simpleocv.h and I copied the implementation of imread replacing stbi_load with stbi_load_from_memory. Do you thing that is something interenting to have?
Alberto

[nihui]

NCNN_EXPORT Mat imdecode(const std::vector<uchar>& buf, int flags = IMREAD_COLOR);

There is imdecode in opencv. Follow the name.
If you have implemented it, contributions are welcome

[AlOa]

Hi,
I made a pull request with the new function. It give a bunch of error, but some of then do not seems related with my code.

          Alberto