feat(#189): allow strip image metadata via bimg.Options.StripMetadata = bool

options.go

@@ -204,6 +204,7 @@ type Options struct {
 	NoAutoRotate   bool
 	NoProfile      bool
 	Interlace      bool
+	StripMetadata  bool
 	Extend         Extend
 	Rotate         Angle
 	Background     Color

resizer.go

@@ -161,6 +161,7 @@ func saveImage(image *C.VipsImage, o Options) ([]byte, error) {
 		NoProfile:      o.NoProfile,
 		Interpretation: o.Interpretation,
 		OutputICC:      o.OutputICC,
+		StripMetadata:  o.StripMetadata,
 	}
 	// Finally get the resultant buffer
 	return vipsSave(image, saveOptions)

vips.go

@@ -55,6 +55,7 @@ type vipsSaveOptions struct {
 	Type           ImageType
 	Interlace      bool
 	NoProfile      bool
+	StripMetadata  bool
 	OutputICC      string // Absolute path to the output ICC profile
 	Interpretation Interpretation
 }
@@ -420,6 +421,7 @@ func vipsSave(image *C.VipsImage, o vipsSaveOptions) ([]byte, error) {
 	saveErr := C.int(0)
 	interlace := C.int(boolToInt(o.Interlace))
 	quality := C.int(o.Quality)
+	strip := C.int(boolToInt(o.Interlace))
 
 	if o.Type != 0 && !IsTypeSupportedSave(o.Type) {
 		return nil, fmt.Errorf("VIPS cannot save to %#v", ImageTypes[o.Type])
@@ -427,13 +429,13 @@ func vipsSave(image *C.VipsImage, o vipsSaveOptions) ([]byte, error) {
 	var ptr unsafe.Pointer
 	switch o.Type {
 	case WEBP:
-		saveErr = C.vips_webpsave_bridge(tmpImage, &ptr, &length, 1, quality)
+		saveErr = C.vips_webpsave_bridge(tmpImage, &ptr, &length, strip, quality)
 	case PNG:
-		saveErr = C.vips_pngsave_bridge(tmpImage, &ptr, &length, 1, C.int(o.Compression), quality, interlace)
+		saveErr = C.vips_pngsave_bridge(tmpImage, &ptr, &length, strip, C.int(o.Compression), quality, interlace)
 	case TIFF:
 		saveErr = C.vips_tiffsave_bridge(tmpImage, &ptr, &length)
 	default:
-		saveErr = C.vips_jpegsave_bridge(tmpImage, &ptr, &length, 1, quality, interlace)
+		saveErr = C.vips_jpegsave_bridge(tmpImage, &ptr, &length, strip, quality, interlace)
 	}
 
 	if int(saveErr) != 0 {

vips.h

@@ -269,7 +269,7 @@ vips_icc_transform_bridge (VipsImage *in, VipsImage **out, const char *output_ic
 int
 vips_jpegsave_bridge(VipsImage *in, void **buf, size_t *len, int strip, int quality, int interlace) {
 	return vips_jpegsave_buffer(in, buf, len,
-		"strip", strip,
+		"strip", strip == 1 ? TRUE : FALSE,
 		"Q", quality,
 		"optimize_coding", TRUE,
 		"interlace", with_interlace(interlace),
@@ -281,7 +281,7 @@ int
 vips_pngsave_bridge(VipsImage *in, void **buf, size_t *len, int strip, int compression, int quality, int interlace) {
 #if (VIPS_MAJOR_VERSION >= 8 || (VIPS_MAJOR_VERSION >= 7 && VIPS_MINOR_VERSION >= 42))
 	return vips_pngsave_buffer(in, buf, len,
-		"strip", FALSE,
+		"strip", strip == 1 ? TRUE : FALSE,
 		"compression", compression,
 		"interlace", with_interlace(interlace),
 		"filter", VIPS_FOREIGN_PNG_FILTER_NONE,
@@ -289,7 +289,7 @@ vips_pngsave_bridge(VipsImage *in, void **buf, size_t *len, int strip, int compr
 	);
 #else
 	return vips_pngsave_buffer(in, buf, len,
-		"strip", FALSE,
+		"strip", strip == 1 ? TRUE : FALSE,
 		"compression", compression,
 		"interlace", with_interlace(interlace),
 		NULL
@@ -300,7 +300,7 @@ vips_pngsave_bridge(VipsImage *in, void **buf, size_t *len, int strip, int compr
 int
 vips_webpsave_bridge(VipsImage *in, void **buf, size_t *len, int strip, int quality) {
 	return vips_webpsave_buffer(in, buf, len,
-		"strip", strip,
+		"strip", strip == 1 ? TRUE : FALSE,
 		"Q", quality,
 		NULL
 	);

vips_test.go

@@ -33,7 +33,7 @@ func TestVipsSave(t *testing.T) {
 
 	for _, typ := range types {
 		image, _, _ := vipsRead(readImage("test.jpg"))
-		options := vipsSaveOptions{Quality: 95, Type: typ}
+		options := vipsSaveOptions{Quality: 95, Type: typ, StripMetadata: true}
 
 		buf, err := vipsSave(image, options)
 		if err != nil {