3 files changed, 5 insertions, 2 deletions
diff --git a/include/cru/osx/graphics/quartz/Convert.h b/include/cru/osx/graphics/quartz/Convert.h
index 8d486069..be56b959 100644
--- a/include/cru/osx/graphics/quartz/Convert.h
+++ b/include/cru/osx/graphics/quartz/Convert.h
@@ -20,4 +20,5 @@ CGRect Convert(const Rect& rect);
 Rect Convert(const CGRect& rect);
 
 CGDataProviderRef ConvertStreamToCGDataProvider(io::Stream* stream);
+CGDataConsumerRef ConvertStreamToCGDataConsumer(io::Stream* stream);
 }  // namespace cru::platform::graphics::osx::quartz
diff --git a/include/cru/osx/graphics/quartz/ImageFactory.h b/include/cru/osx/graphics/quartz/ImageFactory.h
index 19e9c8c1..23d14332 100644
--- a/include/cru/osx/graphics/quartz/ImageFactory.h
+++ b/include/cru/osx/graphics/quartz/ImageFactory.h
@@ -15,6 +15,8 @@ class QuartzImageFactory : public OsxQuartzResource,
 
  public:
   std::unique_ptr<IImage> DecodeFromStream(io::Stream* stream) override;
+  void EncodeToStream(IImage* image, io::Stream* stream, ImageFormat format,
+                      float quality) override;
   std::unique_ptr<IImage> CreateBitmap(int width, int height) override;
 };
 }  // namespace cru::platform::graphics::osx::quartz
diff --git a/include/cru/platform/graphics/ImageFactory.h b/include/cru/platform/graphics/ImageFactory.h
index 2339a069..cd868087 100644
--- a/include/cru/platform/graphics/ImageFactory.h
+++ b/include/cru/platform/graphics/ImageFactory.h
@@ -3,7 +3,7 @@
 #include "cru/common/io/Stream.h"
 
 namespace cru::platform::graphics {
-enum class ImageFormat { Jpeg, Png };
+enum class ImageFormat { Jpeg, Png, Gif };
 
 struct CRU_PLATFORM_GRAPHICS_API IImageFactory
     : public virtual IGraphicsResource {
@@ -15,7 +15,7 @@ struct CRU_PLATFORM_GRAPHICS_API IImageFactory
    *  \param stream The stream to write to.
    *  \param format The format to encode to.
    *  \param quality The quality to encode to.
-   *  \todo Implement on macOS and Windows.
+   *  \todo Implement on Windows.
    */
   virtual void EncodeToStream(IImage* image, io::Stream* stream,
                               ImageFormat format, float quality) = 0;