Read a Photo with libccv

example.go

package main

/*
#include "ccv.h"
*/
import "C"

import (
	"fmt"
	"unsafe"
)

type Image struct {
	image *C.ccv_dense_matrix_t
}

func main() {
	fmt.Println("boe")
	image := new(Image)

	src := C.CString("painting.jpg")
	defer C.free(unsafe.Pointer(src))
	C.ccv_read_impl(unsafe.Pointer(src), &image.image, C.CCV_IO_GRAY|C.CCV_IO_ANY_FILE, 0, 0, 0)

	dst := C.CString("black_and_white_painting.jpg")
	defer C.free(unsafe.Pointer(dst))
	x := 0
	y := 0
	C.ccv_write(image.image, dst, (*C.int)(unsafe.Pointer(&x)), C.CCV_IO_PNG_FILE, unsafe.Pointer(&y))
}