diff options
Diffstat (limited to 'lib/pam.h')
| -rw-r--r-- | lib/pam.h | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/lib/pam.h b/lib/pam.h index 4fa478ea..42d1dc75 100644 --- a/lib/pam.h +++ b/lib/pam.h @@ -109,6 +109,23 @@ struct pam { libnetpbm does not return comments and does not allocate any storage. */ + int visual; /* boolean */ + /* tuple_type is one of the PAM-defined tuple types for visual + images ("GRAYSCALE", "RGB_ALPHA", etc.). + */ + unsigned int color_depth; + /* Number of color planes (i.e. 'depth', but without transparency). + The color planes are the lowest numbered ones. Meaningless if + 'visual' is false. + */ + int have_opacity; /* boolean */ + /* The tuples have an opacity (transparency, alpha) plane. + Meaningless if 'visual' is false. + */ + unsigned int opacity_plane; + /* The plane number of the opacity plane; meaningless if + 'haveOpacity' is false or 'visual' is false. + */ }; #define PAM_HAVE_ALLOCATION_DEPTH 1 @@ -275,6 +292,14 @@ pnm_makearrayrgb(const struct pam * const pamP, tuple ** const tuples); void +pnm_makerowrgba(const struct pam * const pamP, + tuple * const tuplerow); + +void +pnm_addopacityrow(const struct pam * const pamP, + tuple * const tuplerow); + +void pnm_getopacity(const struct pam * const pamP, int * const haveOpacityP, unsigned int * const opacityPlaneP); |