improve (static): attempt at statically compile everything - revamp

server/plugin/plg_image_light/lib_transcode.go

@@ -0,0 +1,58 @@
+package plg_image_light
+// #cgo CFLAGS: -I./deps/src
+// #cgo LDFLAGS: -lm -lgomp -llcms2 -lstdc++ -L./deps -l:libtranscode.a
+// #include "libtranscode.h"
+import "C"
+
+import (
+	"context"
+	"golang.org/x/sync/semaphore"
+	. "github.com/mickael-kerjean/filestash/server/common"
+	"unsafe"
+)
+
+var LIBRAW_LOCK = semaphore.NewWeighted(int64(5))
+
+func IsRaw(mType string) bool {
+	switch mType {
+	case "image/x-tif":
+	case "image/x-canon-cr2":
+	case "image/x-canon-crw":
+	case "image/x-nikon-nef":
+	case "image/x-nikon-nrw":
+	case "image/x-sony-arw":
+	case "image/x-sony-sr2":
+	case "image/x-minolta-mrw":
+	case "image/x-minolta-mdc":
+	case "image/x-olympus-orf":
+	case "image/x-panasonic-rw2":
+	case "image/x-pentax-pef":
+	case "image/x-epson-erf":
+	case "image/x-raw":
+	case "image/x-x3f":
+	case "image/x-fuji-raf":
+	case "image/x-aptus-mos":
+	case "image/x-mamiya-mef":
+	case "image/x-hasselblad-3fr":
+	case "image/x-adobe-dng":
+	case "image/x-samsung-srw":
+	case "image/x-kodak-kdc":
+	case "image/x-kodak-dcr":
+	default:
+		return false
+	}
+	return true
+}
+
+func ExtractPreview(t *Transform) error {
+	LIBRAW_LOCK.Acquire(context.Background(), 1)
+	defer LIBRAW_LOCK.Release(1)
+
+	filename := C.CString(t.Input)
+	defer C.free(unsafe.Pointer(filename))
+
+	if err := C.image_transcode_compute(filename, C.int(t.Size)); err != 0 {
+		return ErrNotValid
+	}
+	return nil
+}