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-rw-r--r--lib/pam.h3
1 files changed, 3 insertions, 0 deletions
diff --git a/lib/pam.h b/lib/pam.h
index 2726092b..c58e36a2 100644
--- a/lib/pam.h
+++ b/lib/pam.h
@@ -163,6 +163,9 @@ struct pam {
 #define PAM_PBM_TUPLETYPE "BLACKANDWHITE"
 #define PAM_PGM_TUPLETYPE "GRAYSCALE"
 #define PAM_PPM_TUPLETYPE "RGB"
+#define PAM_PBM_ALPHA_TUPLETYPE "BLACKANDWHITE_ALPHA"
+#define PAM_PGM_ALPHA_TUPLETYPE "GRAYSCALE_ALPHA"
+#define PAM_PPM_ALPHA_TUPLETYPE "RGB_ALPHA"
 
 #define PAM_PBM_BLACK PAM_BLACK
 #define PAM_PBM_WHITE PAM_BW_WHITE