libjpeg ver. 6b jpeg_stdio_src vs jpeg_mem_src

Question

I am using Libjpeg version 6b. In version 8 they have a nice function to read data out of the memory called jpeg_mem_src(...), unfortunately ver. 6b does not ha

Answer 1

Or you can also try to use GNU's fmemopen() function which should be declared in stdio.h header file.

FILE * source = fmemopen(inbuffer, inlength, "rb");
if (source == NULL)
{
    fprintf(stderr, "Calling fmemopen() has failed.\n");
    exit(1);
}

// ...

jpeg_stdio_src(&cinfo, source);

// ...

fclose(source);