Initial QSfera import

Server/vendor/github.com/davidbyttow/govips/v2/vips/lang.go

@@ -0,0 +1,62 @@
+package vips
+
+// #include <vips/vips.h>
+// #include <stdlib.h>
+import "C"
+
+import (
+	"reflect"
+	"unsafe"
+)
+
+func freeCString(s *C.char) {
+	C.free(unsafe.Pointer(s))
+}
+
+func gFreePointer(ref unsafe.Pointer) {
+	C.g_free(C.gpointer(ref))
+}
+
+func boolToInt(b bool) int {
+	if b {
+		return 1
+	}
+	return 0
+}
+
+func toGboolean(b bool) C.gboolean {
+	if b {
+		return C.gboolean(1)
+	}
+	return C.gboolean(0)
+}
+
+func fromGboolean(b C.gboolean) bool {
+	return b != 0
+}
+
+func fromCArrayInt(out *C.int, n int) []int {
+	var result = make([]int, n)
+	var data []C.int
+	sh := (*reflect.SliceHeader)(unsafe.Pointer(&data))
+	sh.Data = uintptr(unsafe.Pointer(out))
+	sh.Len = n
+	sh.Cap = n
+	for i := range data {
+		result[i] = int(data[i])
+	}
+	return result
+}
+
+func fromCArrayDouble(out *C.double, n int) []float64 {
+	if out == nil || n <= 0 {
+		return nil
+	}
+
+	data := make([]float64, n)
+	for i := 0; i < n; i++ {
+		data[i] = float64(*(*C.double)(unsafe.Pointer(uintptr(unsafe.Pointer(out)) + uintptr(i)*unsafe.Sizeof(C.double(0)))))
+	}
+
+	return data
+}