| /* VIPS display conversions. |
| * |
| * 23/10/09 |
| * - from colour.h |
| */ |
| |
| /* |
| |
| This file is part of VIPS. |
| |
| VIPS is free software; you can redistribute it and/or modify |
| it under the terms of the GNU Lesser General Public License as published by |
| the Free Software Foundation; either version 2 of the License, or |
| (at your option) any later version. |
| |
| This program is distributed in the hope that it will be useful, |
| but WITHOUT ANY WARRANTY; without even the implied warranty of |
| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| GNU Lesser General Public License for more details. |
| |
| You should have received a copy of the GNU Lesser General Public License |
| along with this program; if not, write to the Free Software |
| Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
| |
| */ |
| |
| /* |
| |
| These files are distributed with VIPS - http://www.vips.ecs.soton.ac.uk |
| |
| */ |
| |
| #ifndef IM_DISP_H |
| #define IM_DISP_H |
| |
| #ifdef __cplusplus |
| extern "C" { |
| #endif /*__cplusplus*/ |
| |
| /* Two kinds of display. A DISP_BARCO does gamma correction etc etc for us and |
| * needs only a colour space transform, a DISP_DUMB is an ordinary display and |
| * needs a full range of corrections. |
| */ |
| enum im_col_disp_type { |
| DISP_BARCO = 0, |
| DISP_DUMB |
| }; |
| |
| /* Structure for holding information about a display device. See the BARCO |
| * papers for details on the fields. |
| */ |
| struct im_col_display { |
| /* All private. |
| */ |
| /*< private >*/ |
| char *d_name; /* Display name */ |
| enum im_col_disp_type d_type; /* Display type */ |
| float d_mat[3][3]; /* XYZ -> luminance matrix */ |
| float d_YCW; /* Luminosity of reference white */ |
| float d_xCW; /* x, y for reference white */ |
| float d_yCW; |
| float d_YCR; /* Light o/p for reference white */ |
| float d_YCG; |
| float d_YCB; |
| int d_Vrwr; /* Pixel values for ref. white */ |
| int d_Vrwg; |
| int d_Vrwb; |
| float d_Y0R; /* Residual light for black pixel */ |
| float d_Y0G; |
| float d_Y0B; |
| float d_gammaR; /* Gamma values for the three guns */ |
| float d_gammaG; |
| float d_gammaB; |
| float d_B; /* 'Background' (like brightness) */ |
| float d_P; /* 'Picture' (like contrast) */ |
| }; |
| |
| int im_col_rgb2XYZ( struct im_col_display *d, |
| int r, int g, int b, |
| float *X, float *Y, float *Z ); |
| int im_col_XYZ2rgb( |
| struct im_col_display *d, |
| float X, float Y, float Z, |
| int *r_ret, int *g_ret, int *b_ret, |
| int *or_ret ); |
| |
| int im_XYZ2disp( IMAGE *in, IMAGE *out, struct im_col_display *d ); |
| int im_Lab2disp( IMAGE *in, IMAGE *out, struct im_col_display *d ); |
| int im_LabQ2disp( IMAGE *in, IMAGE *out, struct im_col_display *d ); |
| int im_disp2XYZ( IMAGE *in, IMAGE *out, struct im_col_display *d ); |
| int im_disp2Lab( IMAGE *in, IMAGE *out, struct im_col_display *d ); |
| |
| /* Colour display values and arrays |
| &im_col_screen_white, index 0 |
| &im_col_SPARC_white, index 1 |
| &im_col_D65_white, index 2 |
| &im_col_barco_white, index 3 |
| &im_col_mitsubishi, index 4 |
| &im_col_relative, index 5 |
| &ultra2, index 6 |
| &srgb_profile, index 7 |
| */ |
| struct im_col_display *im_col_displays( int n ); |
| struct im_col_display *im_col_display_name( const char *name ); |
| |
| void *im_LabQ2disp_build_table( IMAGE *out, struct im_col_display *d ); |
| int im_LabQ2disp_table( IMAGE *in, IMAGE *out, void *table ); |
| |
| int im_dE_fromdisp( IMAGE *in1, IMAGE *in2, IMAGE *out, |
| struct im_col_display *d ); |
| int im_dECMC_fromdisp( IMAGE *in1, IMAGE *in2, IMAGE *out, |
| struct im_col_display *d ); |
| |
| #ifdef __cplusplus |
| } |
| #endif /*__cplusplus*/ |
| |
| #endif /*IM_DISP_H*/ |
