CFURLRef url = CFURLCreateWithFileSystemPath(NULL, str, kCFURLPOSIXPathStyle, false);
CGImageSourceRef source = CGImageSourceCreateWithURL(url, NULL);
CGImageRef ref = CGImageSourceCreateImageAtIndex(source, 0, NULL);
- /* auto provider = CGDataProviderCreateWithFilename(path.c_str()); */
- /* std::ifstream file(path); */
- /* long magic; */
- /* file.read((char*)&magic, 8); */
- /* file.close(); */
-
- /* CGImageRef ref; */
+ initWithImageRef(ref);
+ CGImageRelease(ref);
+}
- /* if (magic == 0x0a1a0a0d474e5089) // png magic number */
- /* ref = CGImageCreateWithPNGDataProvider(provider, nullptr, false, kCGRenderingIntentDefault); */
- /* else */
- /* ref = CGImageCreateWithJPEGDataProvider(provider, nullptr, false, kCGRenderingIntentDefault); */
+Image::Image(const unsigned char *data, size_t length, const char *formatHint) {
+ CGDataProviderRef dpRef = CGDataProviderCreateWithData(NULL, data, length, NULL);
+ CGImageRef ref;
+ if (strcmp("png", formatHint) == 0)
+ ref = CGImageCreateWithPNGDataProvider(dpRef, NULL, false, kCGRenderingIntentDefault);
+ else if (strcmp("jpg", formatHint) == 0)
+ ref = CGImageCreateWithJPEGDataProvider(dpRef, NULL, false, kCGRenderingIntentDefault);
+ else
+ abort();
+ initWithImageRef(ref);
+ CGImageRelease(ref);
+}
+void Image::initWithImageRef(CGImageRef ref) {
_width = CGImageGetWidth(ref), _height = CGImageGetHeight(ref);
info = CGImageGetBitmapInfo(ref);
alphaInfo = CGImageGetAlphaInfo(ref);
colorSpace = CGImageGetColorSpace(ref);
+ bitsPerComponent = CGImageGetBitsPerComponent(ref);
dataRef = CGDataProviderCopyData(CGImageGetDataProvider(ref));
- CGImageRelease(ref);
-
}
unsigned char *Image::data() const {
GLfloat Image::width() const { return _width; }
GLfloat Image::height() const { return _height; }
-GLuint Image::format() const {
+// TODO: Properly implement this for both internal format + format
+GLenum Image::format() const {
if (CGColorSpaceGetModel(colorSpace) == kCGColorSpaceModelMonochrome) {
return GL_DEPTH_COMPONENT;
}
return GL_RGBA;
}
+inline bool Image::usesFloat() const { return info & kCGBitmapFloatComponents; }
+
+GLint Image::internalFormat() const {
+ switch (format()) {
+ case GL_DEPTH_COMPONENT: return GL_DEPTH_COMPONENT;
+ case GL_RGB:
+ if (bitsPerComponent == 16)
+ return usesFloat() ? GL_RGB16F : GL_RGB16;
+ else if (bitsPerComponent == 8)
+ return GL_RGB;
+ else abort();
+ default: return GL_RGBA;
+ }
+}
+
+GLenum Image::type() const {
+ if (usesFloat()) {
+ if (bitsPerComponent == 16) return GL_HALF_FLOAT;
+ else if (bitsPerComponent == 32) return GL_FLOAT;
+ abort();
+ }
+ return GL_UNSIGNED_BYTE;
+
+ //TODO:
+ /* switch (bitsPerComponent) { */
+ /* case 1: return GL_UNSIGNED_BYTE; */
+ /* case 16: return GL_UNSIGNED_SHORT; */
+ /* case 24: */
+}
+
Image::~Image() { CFRelease(dataRef); }