1 files changed, 16 insertions, 1 deletions
diff --git a/include/encode/SkWebpEncoder.h b/include/encode/SkWebpEncoder.h
index 8d894a442c..97d2742920 100644
--- a/include/encode/SkWebpEncoder.h
+++ b/include/encode/SkWebpEncoder.h
@@ -14,10 +14,25 @@ class SkWStream;
 
 namespace SkWebpEncoder {
 
+    enum class SK_API Compression {
+        kLossy,
+        kLossless,
+    };
+
     struct SK_API Options {
         /**
-         *  |fQuality| must be in [0.0f, 100.0f] where 0.0f corresponds to the lowest quality.
+         *  |fCompression| determines whether we will use webp lossy or lossless compression.
+         *
+         *  |fQuality| must be in [0.0f, 100.0f].
+         *  If |fCompression| is kLossy, |fQuality| corresponds to the visual quality of the
+         *  encoding.  Decreasing the quality will result in a smaller encoded image.
+         *  If |fCompression| is kLossless, |fQuality| corresponds to the amount of effort
+         *  put into the encoding.  Lower values will compress faster into larger files,
+         *  while larger values will compress slower into smaller files.
+         *
+         *  This scheme is designed to match the libwebp API.
          */
+        Compression fCompression = Compression::kLossy;
         float fQuality = 100.0f;
 
         /**