swscale/alphablend: Support SWS_ALPHA_BLEND_CHECKERBOARD

Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
2015-08-09 17:11:53 +02:00
parent 87100e828a
commit c5ebeaa308
4 changed files with 21 additions and 11 deletions
--- a/libswscale/swscale_internal.h
+++ b/libswscale/swscale_internal.h
@@ -78,6 +78,7 @@ typedef enum SwsDither {
 typedef enum SwsAlphaBlend {
    SWS_ALPHA_BLEND_NONE  = 0,
    SWS_ALPHA_BLEND_UNIFORM,
+    SWS_ALPHA_BLEND_CHECKERBOARD,
    SWS_ALPHA_BLEND_NB,
 } SwsAlphaBlend;