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Add option to convert embedded ICC profiles

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Set an bimg.Options OutputICC to an absolute path to the desired output ICC profile. If an embedded ICC profile is found in VipsImage, it is converted to the output ICC profile.
Fixes #50
This commit is contained in:
Janis Meybohm 2017-07-07 14:02:03 +02:00
parent ce7bbda0f5
commit 767bfdac74
4 changed files with 22 additions and 1 deletions
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15
vips.go
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@ -55,6 +55,7 @@ type vipsSaveOptions struct {
Type ImageType
Interlace bool
NoProfile bool
OutputICC string // Absolute path to the output ICC profile
Interpretation Interpretation
}
@ -362,6 +363,7 @@ func vipsFlattenBackground(image *C.VipsImage, background Color) (*C.VipsImage,
}
func vipsPreSave(image *C.VipsImage, o *vipsSaveOptions) (*C.VipsImage, error) {
var outImage *C.VipsImage
// Remove ICC profile metadata
if o.NoProfile {
C.remove_profile(image)
@ -374,7 +376,6 @@ func vipsPreSave(image *C.VipsImage, o *vipsSaveOptions) (*C.VipsImage, error) {
interpretation := C.VipsInterpretation(o.Interpretation)
// Apply the proper colour space
var outImage *C.VipsImage
if vipsColourspaceIsSupported(image) {
err := C.vips_colourspace_bridge(image, &outImage, interpretation)
if int(err) != 0 {
@ -383,6 +384,18 @@ func vipsPreSave(image *C.VipsImage, o *vipsSaveOptions) (*C.VipsImage, error) {
image = outImage
}
if o.OutputICC != "" && vipsHasProfile(image) {
debug("Embedded ICC profile found, trying to convert to %s", o.OutputICC)
outputIccPath := C.CString(o.OutputICC)
defer C.free(unsafe.Pointer(outputIccPath))
err := C.vips_icc_transform_bridge(image, &outImage, outputIccPath)
if int(err) != 0 {
return nil, catchVipsError()
}
image = outImage
}
return image, nil
}