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feat(test): vips

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This commit is contained in:
Tomas Aparicio 2015-04-08 00:58:26 +02:00
parent 414fe40c91
commit 39931145de
2 changed files with 92 additions and 38 deletions
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76
vips.go
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@ -19,6 +19,12 @@ var (
initialized bool = false
)
type vipsSaveOptions struct {
Quality int
Compression int
Type ImageType
}
func init() {
if C.VIPS_MAJOR_VERSION <= 7 && C.VIPS_MINOR_VERSION < 40 {
panic("unsupported old vips version!")
@ -109,6 +115,38 @@ func vipsRead(buf []byte) (*C.struct__VipsImage, ImageType, error) {
return image, imageType, nil
}
func vipsSave(image *C.struct__VipsImage, o vipsSaveOptions) ([]byte, error) {
var ptr unsafe.Pointer
length := C.size_t(0)
err := C.int(0)
defer C.g_object_unref(C.gpointer(image))
switch {
case o.Type == PNG:
err = C.vips_pngsave_bridge(image, &ptr, &length, 1, C.int(o.Compression), C.int(o.Quality), 0)
break
case o.Type == WEBP:
err = C.vips_webpsave_bridge(image, &ptr, &length, 1, C.int(o.Quality), 0)
break
default:
err = C.vips_jpegsave_bridge(image, &ptr, &length, 1, C.int(o.Quality), 0)
break
}
if int(err) != 0 {
return nil, catchVipsError()
}
buf := C.GoBytes(ptr, C.int(length))
// Cleanup
C.g_free(C.gpointer(ptr))
C.vips_error_clear()
return buf, nil
}
func vipsExtract(image *C.struct__VipsImage, left, top, width, height int) (*C.struct__VipsImage, error) {
var buf *C.struct__VipsImage
defer C.g_object_unref(C.gpointer(image))
@ -207,44 +245,6 @@ func vipsImageType(buf []byte) ImageType {
return imageType
}
type vipsSaveOptions struct {
Quality int
Compression int
Type ImageType
}
func vipsSave(image *C.struct__VipsImage, o vipsSaveOptions) ([]byte, error) {
var ptr unsafe.Pointer
length := C.size_t(0)
err := C.int(0)
defer C.g_object_unref(C.gpointer(image))
switch {
case o.Type == PNG:
err = C.vips_pngsave_bridge(image, &ptr, &length, 1, C.int(o.Compression), C.int(o.Quality), 0)
break
case o.Type == WEBP:
err = C.vips_webpsave_bridge(image, &ptr, &length, 1, C.int(o.Quality), 0)
break
default:
err = C.vips_jpegsave_bridge(image, &ptr, &length, 1, C.int(o.Quality), 0)
break
}
if int(err) != 0 {
return nil, catchVipsError()
}
buf := C.GoBytes(ptr, C.int(length))
// Cleanup
C.g_free(C.gpointer(ptr))
C.vips_error_clear()
return buf, nil
}
func vipsExifOrientation(image *C.struct__VipsImage) int {
return int(C.vips_exif_orientation(image))
}