refactor. feat(test): add fixtures

.gitignore

@@ -1,3 +1,6 @@
 /bimg
 /bundle
 bin
+/*.jpg
+/*.png
+/*.webp

resize_test.go

@@ -8,7 +8,7 @@ import (
 
 func TestResize(t *testing.T) {
 	options := Options{Width: 800, Height: 600, Crop: false, Rotate: 270}
-	img, err := os.Open("fixtures/space.jpg")
+	img, err := os.Open("fixtures/test.jpg")
 	if err != nil {
 		t.Fatal(err)
 	}
@@ -24,11 +24,11 @@ func TestResize(t *testing.T) {
 		t.Errorf("Resize(imgData, %#v) error: %#v", options, err)
 	}
 
-	if DetermineType(newImg) != JPEG {
+	if DetermineImageType(newImg) != JPEG {
 		t.Fatal("Image is not jpeg")
 	}
 
-	err = ioutil.WriteFile("fixtures/test.jpg", newImg, 0644)
+	err = ioutil.WriteFile("result.jpg", newImg, 0644)
 	if err != nil {
 		t.Fatal("Cannot save the image")
 	}

type.go

@@ -1,14 +1,39 @@
 package bimg
 
 const (
-	UNKNOWN = "unknown"
+	UNKNOWN = iota
-	JPEG    = "jpeg"
+	JPEG
-	WEBP    = "webp"
+	WEBP
-	PNG     = "png"
+	PNG
-	TIFF    = "tiff"
+	TIFF
-	MAGICK  = "magick"
+	MAGICK
 )
 
-func DetermineType(buf []byte) string {
+func DetermineImageType(buf []byte) int {
 	return vipsImageType(buf)
 }
+
+func DetermineImageTypeName(buf []byte) string {
+	imageCode := vipsImageType(buf)
+	imageType := "unknown"
+
+	switch {
+	case imageCode == JPEG:
+		imageType = "jpeg"
+		break
+	case imageCode == WEBP:
+		imageType = "webp"
+		break
+	case imageCode == PNG:
+		imageType = "png"
+		break
+	case imageCode == TIFF:
+		imageType = "png"
+		break
+	case imageCode == MAGICK:
+		imageType = "magick"
+		break
+	}
+
+	return imageType
+}

vips.go

@@ -62,8 +62,6 @@ func vipsRead(buf []byte) (*C.struct__VipsImage, error) {
 	var image *C.struct__VipsImage
 	imageType := vipsImageType(buf)
 
-	debug("Image format: %s", imageType)
-
 	if imageType == UNKNOWN {
 		return nil, errors.New("Input buffer contains unsupported image format")
 	}
@@ -71,8 +69,10 @@ func vipsRead(buf []byte) (*C.struct__VipsImage, error) {
 	// feed it
 	length := C.size_t(len(buf))
 	imageBuf := unsafe.Pointer(&buf[0])
+	imageTypeC := C.int(imageType)
 
-	err := C.vips_jpegload_buffer_seq(imageBuf, length, &image)
+	err := C.vips_init_image(imageBuf, length, imageTypeC, &image)
+	//err := C.vips_jpegload_buffer_seq(imageBuf, length, &image)
 	if err != 0 {
 		return nil, vipsError()
 	}
@@ -92,7 +92,7 @@ func vipsExtract(image *C.struct__VipsImage, left int, top int, width int, heigh
 	return buf, nil
 }
 
-func vipsImageType(buf []byte) string {
+func vipsImageType(buf []byte) int {
 	imageType := UNKNOWN
 
 	length := C.size_t(len(buf))

vips.h

@@ -2,6 +2,24 @@
 #include <vips/vips.h>
 #include <vips/vips7compat.h>
 
+enum types {
+	UNKNOWN = 0,
+	JPEG,
+	WEBP,
+	PNG,
+	TIFF,
+	MAGICK
+};
+
+/*
+#define JPEG    0
+#define WEBP    "WEBP"
+#define PNG     "PNG"
+#define TIFF    "TIFF"
+#define MAGICK  "MAGICK"
+#define UNKNOWN "UNKNOWN"
+*/
+
 int
 vips_affine_interpolator(VipsImage *in, VipsImage **out, double a, double b, double c, double d, VipsInterpolate *interpolator)
 {
@@ -73,6 +91,27 @@ vips_rotate(VipsImage *in, VipsImage **buf, int angle)
 	return vips_rot(in, buf, rotate, NULL);
 };
 
+int
+vips_init_image(void *buf, size_t len, int imageType, VipsImage **out) {
+ 	int code = 1;
+
+  if (imageType == JPEG) {
+    code = vips_jpegload_buffer(buf, len, out, "access", VIPS_ACCESS_SEQUENTIAL, NULL);
+  } else if (imageType == PNG) {
+    code = vips_pngload_buffer(buf, len, out, "access", VIPS_ACCESS_SEQUENTIAL, NULL);
+  } else if (imageType == WEBP) {
+    code = vips_webpload_buffer(buf, len, out, "access", VIPS_ACCESS_SEQUENTIAL, NULL);
+  } else if (imageType == TIFF) {
+    code = vips_tiffload_buffer(buf, len, out, "access", VIPS_ACCESS_SEQUENTIAL, NULL);
+#if (VIPS_MAJOR_VERSION >= 8)
+  } else if (imageType == MAGICK) {
+    code = vips_magickload_buffer(buf, len, out, "access", VIPS_ACCESS_SEQUENTIAL, NULL);
+#endif
+  }
+
+  return code;
+};
+
 int
 vips_embed_extend(VipsImage *in, VipsImage **out, int left, int top, int width, int height, int extend)
 {