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-rw-r--r--libass/ass.h3
1 files changed, 3 insertions, 0 deletions
diff --git a/libass/ass.h b/libass/ass.h
index 18aa419..8422c82 100644
--- a/libass/ass.h
+++ b/libass/ass.h
@@ -66,6 +66,9 @@ typedef struct ass_image {
// Note: the last row may not be padded to
// bitmap stride!
uint32_t color; // Bitmap color and alpha, RGBA
+ // For full VSFilter compatibility, the value
+ // must be transformed as described in
+ // ass_types.h for ASS_YCbCrMatrix
int dst_x, dst_y; // Bitmap placement inside the video frame
struct ass_image *next; // Next image, or NULL