/* Encode bitmaps via CGImageDestination. We setup a DataConsumer which writes
to our SkWStream. Since we don't reference/own the SkWStream, our consumer
must only live for the duration of the onEncode() method.
*/
bool SkImageEncoder_CG::onEncode(SkWStream* stream, const SkBitmap& bm,
int quality) {
CFStringRef type;
switch (fType) {
case kJPEG_Type:
type = kUTTypeJPEG;
break;
case kPNG_Type:
type = kUTTypePNG;
break;
default:
return false;
}
CGImageDestinationRef dst = SkStreamToImageDestination(stream, type);
if (NULL == dst) {
return false;
}
SkAutoTCallVProc<const void, CFRelease> ardst(dst);
CGImageRef image = SkCreateCGImageRef(bm);
if (NULL == image) {
return false;
}
SkAutoTCallVProc<CGImage, CGImageRelease> agimage(image);
CGImageDestinationAddImage(dst, image, NULL);
CGImageDestinationFinalize(dst);
return true;
}
/* Encode bitmaps via CGImageDestination. We setup a DataConsumer which writes
to our SkWStream. Since we don't reference/own the SkWStream, our consumer
must only live for the duration of the onEncode() method.
*/
bool SkEncodeImageWithCG(SkWStream* stream, const SkPixmap& pixmap, SkEncodedImageFormat format) {
SkBitmap bm;
if (!bm.installPixels(pixmap)) {
return false;
}
bm.setImmutable();
CFStringRef type;
switch (format) {
case SkEncodedImageFormat::kICO:
type = kUTTypeICO;
break;
case SkEncodedImageFormat::kBMP:
type = kUTTypeBMP;
break;
case SkEncodedImageFormat::kGIF:
type = kUTTypeGIF;
break;
case SkEncodedImageFormat::kJPEG:
type = kUTTypeJPEG;
break;
case SkEncodedImageFormat::kPNG:
// PNG encoding an ARGB_4444 bitmap gives the following errors in GM:
// <Error>: CGImageDestinationAddImage image could not be converted to destination
// format.
// <Error>: CGImageDestinationFinalize image destination does not have enough images
// So instead we copy to 8888.
if (bm.colorType() == kARGB_4444_SkColorType) {
SkBitmap bitmapN32;
bitmapN32.allocPixels(bm.info().makeColorType(kN32_SkColorType));
bm.readPixels(bitmapN32.info(), bitmapN32.getPixels(), bitmapN32.rowBytes(), 0, 0);
bm.swap(bitmapN32);
}
type = kUTTypePNG;
break;
default:
return false;
}
CGImageDestinationRef dst = SkStreamToImageDestination(stream, type);
if (nullptr == dst) {
return false;
}
SkAutoTCallVProc<const void, CFRelease> ardst(dst);
CGImageRef image = SkCreateCGImageRef(bm);
if (nullptr == image) {
return false;
}
SkAutoTCallVProc<CGImage, CGImageRelease> agimage(image);
CGImageDestinationAddImage(dst, image, nullptr);
return CGImageDestinationFinalize(dst);
}
/* Encode bitmaps via CGImageDestination. We setup a DataConsumer which writes
to our SkWStream. Since we don't reference/own the SkWStream, our consumer
must only live for the duration of the onEncode() method.
*/
bool SkImageEncoder_CG::onEncode(SkWStream* stream, const SkBitmap& bm,
int quality) {
// Used for converting a bitmap to 8888.
const SkBitmap* bmPtr = &bm;
SkBitmap bitmap8888;
CFStringRef type;
switch (fType) {
case kICO_Type:
type = kUTTypeICO;
break;
case kBMP_Type:
type = kUTTypeBMP;
break;
case kGIF_Type:
type = kUTTypeGIF;
break;
case kJPEG_Type:
type = kUTTypeJPEG;
break;
case kPNG_Type:
// PNG encoding an ARGB_4444 bitmap gives the following errors in GM:
// <Error>: CGImageDestinationAddImage image could not be converted to destination
// format.
// <Error>: CGImageDestinationFinalize image destination does not have enough images
// So instead we copy to 8888.
if (bm.colorType() == kARGB_4444_SkColorType) {
bm.copyTo(&bitmap8888, kN32_SkColorType);
bmPtr = &bitmap8888;
}
type = kUTTypePNG;
break;
default:
return false;
}
CGImageDestinationRef dst = SkStreamToImageDestination(stream, type);
if (NULL == dst) {
return false;
}
SkAutoTCallVProc<const void, CFRelease> ardst(dst);
CGImageRef image = SkCreateCGImageRef(*bmPtr);
if (NULL == image) {
return false;
}
SkAutoTCallVProc<CGImage, CGImageRelease> agimage(image);
CGImageDestinationAddImage(dst, image, NULL);
return CGImageDestinationFinalize(dst);
}
