Writes JPEG image to file. num_channels must be 1 (Y), 3 (RGB), 4 (RGBA), image pitch must be width*num_channels. note that alpha will not be stored in jpeg file.
See Implementation
![bool compress_image_to_jpeg_file(const(char)[] fname, int width, int height, int num_channels, const(ubyte)[] pImage_data)](http://arsd-official.dpldocs.info/arsd.jpeg.compress_image_to_jpeg_file.1.html){kind=link}
Writes JPEG image to file. num_channels must be 1 (Y), 3 (RGB), 4 (RGBA), image pitch must be width*num_channels. note that alpha will not be stored in jpeg file.