X-Git-Url: https://git.sesse.net/?p=movit;a=blobdiff_plain;f=ycbcr.h;h=207be4e98a81963aae12a86f18ff9aa8e5a9000a;hp=6f9f4c9d3ac6b25e880c2931e439c3549688694e;hb=a2e7b432626b8a2c54cb1ff9d09203f50227fc07;hpb=04ea19a8d042805d1483d1478a0dd74fb18eca24

diff --git a/ycbcr.h b/ycbcr.h
index 6f9f4c9..207be4e 100644
--- a/ycbcr.h
+++ b/ycbcr.h
@@ -39,6 +39,7 @@
 
 #include "image_format.h"
 
+#include <epoxy/gl.h>
 #include <Eigen/Core>
 
 namespace movit {
@@ -75,7 +76,13 @@ float compute_chroma_offset(float pos, unsigned subsampling_factor, unsigned res
 // Given <ycbcr_format>, compute the values needed to turn Y'CbCr into R'G'B';
 // first subtract the returned offset, then left-multiply the returned matrix
 // (the scaling is already folded into it).
-void compute_ycbcr_matrix(YCbCrFormat ycbcr_format, float *offset, Eigen::Matrix3d *ycbcr_to_rgb);
+//
+// <type> is the data type you're rendering from; normally, it would should match
+// <ycbcr_format.num_levels>, but for the special case of 10- and 12-bit Y'CbCr,
+// we support storing it in 16-bit formats, which incurs extra scaling factors.
+// You can get that scaling factor in <scale> if you want.
+void compute_ycbcr_matrix(YCbCrFormat ycbcr_format, float *offset, Eigen::Matrix3d *ycbcr_to_rgb,
+                          GLenum type = GL_UNSIGNED_BYTE, double *scale_factor = nullptr);
 
 }  // namespace movit