Merge pull request #698 from adamsilverstein/webp-lossless

Support writing lossless WebP

1 files changed, 13 insertions, 0 deletions

diff --git a/src/gd.h b/src/gd.h
index 165f13c..9456a86 100644
--- a/src/gd.h
+++ b/src/gd.h
@@ -1125,6 +1125,19 @@ BGD_DECLARE(void) gdImageJpegCtx(gdImagePtr im, gdIOCtxPtr out, int quality);
 /* Best to free this memory with gdFree(), not free() */
 BGD_DECLARE(void *) gdImageJpegPtr (gdImagePtr im, int *size, int quality);
 
+/**
+ * Group: WebP
+ *
+ * Constant: gdWebpLossless
+ *
+ * Lossless quality threshold. When image quality is greater than or equal to
+ * <gdWebpLossless>, the image will be written in the lossless WebP format.
+ *
+ * See also:
+ *   - <gdImageWebpEx>
+ */
+#define gdWebpLossless 101
+
 BGD_DECLARE(void) gdImageWebpEx (gdImagePtr im, FILE * outFile, int quantization);
 BGD_DECLARE(void) gdImageWebp (gdImagePtr im, FILE * outFile);
 BGD_DECLARE(void *) gdImageWebpPtr (gdImagePtr im, int *size);