static void printPNG(CGImageRef image)
{
RetainPtr<CFMutableDataRef> imageData(AdoptCF, CFDataCreateMutable(0, 0));
RetainPtr<CGImageDestinationRef> imageDest(AdoptCF, CGImageDestinationCreateWithData(imageData.get(), kUTTypePNG, 1, 0));
CGImageDestinationAddImage(imageDest.get(), image, 0);
CGImageDestinationFinalize(imageDest.get());
printf("Content-Length: %lu\n", CFDataGetLength(imageData.get()));
fwrite(CFDataGetBytePtr(imageData.get()), 1, CFDataGetLength(imageData.get()), stdout);
}
static void dumpBitmap(CGContextRef bitmapContext, const char* checksum)
{
RetainPtr<CGImageRef> image(AdoptCF, CGBitmapContextCreateImage(bitmapContext));
RetainPtr<CFMutableDataRef> imageData(AdoptCF, CFDataCreateMutable(0, 0));
RetainPtr<CGImageDestinationRef> imageDest(AdoptCF, CGImageDestinationCreateWithData(imageData.get(), kUTTypePNG, 1, 0));
CGImageDestinationAddImage(imageDest.get(), image.get(), 0);
CGImageDestinationFinalize(imageDest.get());
const unsigned char* data = CFDataGetBytePtr(imageData.get());
const size_t dataLength = CFDataGetLength(imageData.get());
printPNG(data, dataLength, checksum);
}
