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Adding support for TIFF save.

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Signed-off-by: Yoan Blanc <yoan@dosimple.ch>
This commit is contained in:
Yoan Blanc 2016-11-13 17:57:58 +01:00
parent 190fe92e28
commit dcd91c85e0
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GPG key ID: 6058CF4574298812
3 changed files with 62 additions and 18 deletions
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30
vips.go
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@ -168,6 +168,25 @@ func VipsIsTypeSupported(t ImageType) bool {
return false
}
// VipsIsTypeSupportedSave returns true if the given image type
// is supported by the current libvips compilation for the
// save operation.
func VipsIsTypeSupportedSave(t ImageType) bool {
if t == JPEG {
return int(C.vips_type_find_save_bridge(C.JPEG)) != 0
}
if t == WEBP {
return int(C.vips_type_find_save_bridge(C.WEBP)) != 0
}
if t == PNG {
return int(C.vips_type_find_save_bridge(C.PNG)) != 0
}
if t == TIFF {
return int(C.vips_type_find_save_bridge(C.TIFF)) != 0
}
return false
}
func vipsExifOrientation(image *C.VipsImage) int {
return int(C.vips_exif_orientation(image))
}
@ -367,18 +386,19 @@ func vipsSave(image *C.VipsImage, o vipsSaveOptions) ([]byte, error) {
interlace := C.int(boolToInt(o.Interlace))
quality := C.int(o.Quality)
if o.Type != 0 && !VipsIsTypeSupportedSave(o.Type) {
return nil, fmt.Errorf("VIPS cannot save to %#v", ImageTypes[o.Type])
}
var ptr unsafe.Pointer
switch o.Type {
case WEBP:
saveErr = C.vips_webpsave_bridge(tmpImage, &ptr, &length, 1, quality)
case PNG:
saveErr = C.vips_pngsave_bridge(tmpImage, &ptr, &length, 1, C.int(o.Compression), quality, interlace)
case 0:
saveErr = C.vips_jpegsave_bridge(tmpImage, &ptr, &length, 1, quality, interlace)
case JPEG:
saveErr = C.vips_jpegsave_bridge(tmpImage, &ptr, &length, 1, quality, interlace)
case TIFF:
saveErr = C.vips_tiffsave_bridge(tmpImage, &ptr, &length)
default:
return nil, fmt.Errorf("VIPS cannot save to %v.", ImageTypes[o.Type])
saveErr = C.vips_jpegsave_bridge(tmpImage, &ptr, &length, 1, quality, interlace)
}
if int(saveErr) != 0 {