# -*- python -*- # Copyright © 2014 Mattias Andrée (maandree@member.fsf.org) # # This program is free software: you can redistribute it and/or modify # it under the terms of the GNU Affero General Public License as published by # the Free Software Foundation, either version 3 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 Affero General Public License for more details. # # You should have received a copy of the GNU Affero General Public License # along with this program. If not, see <http://www.gnu.org/licenses/>. cimport cython from libc.stdlib cimport malloc, free cdef extern int blueshift_vidmode_open(int use_screen) cdef extern unsigned short int* blueshift_vidmode_read(int use_crtc) cdef extern int blueshift_vidmode_apply(unsigned long long int use_crtcs, unsigned short int* r_curve, unsigned short int* g_curve, unsigned short int* b_curve) cdef extern void blueshift_vidmode_close() def vidmode_open(int use_screen): ''' Start stage of colour curve control @param use_screen The screen to use @return Zero on success ''' return blueshift_vidmode_open(use_screen) def vidmode_read(int use_crtc): ''' Gets the current colour curves @param use_crtc The CRTC to use @return :(r:list<int>, g:list<int>, b:list<int>) The current red, green and blue colour curves ''' cdef unsigned short int* got got = blueshift_vidmode_read(use_crtc) if got is NULL: raise Exception() r, g, b, i = [], [], [], 0 for c in (r, g, b): s = got[i] i += 1 for j in range(s): c.append(got[i + j]) i += s return (r, g, b) def vidmode_apply(unsigned long long use_crtcs, r_curve, g_curve, b_curve): ''' Apply stage of colour curve control @param use_crtcs Mask of CRTC:s to use @param r_curve:list<unsigned short int> The red colour curve @param g_curve:list<unsigned short int> The green colour curve @param b_curve:list<unsigned short int> The blue colour curve @return Zero on success ''' cdef unsigned short int* r cdef unsigned short int* g cdef unsigned short int* b r = <unsigned short int*>malloc(256 * 2) g = <unsigned short int*>malloc(256 * 2) b = <unsigned short int*>malloc(256 * 2) if (r is NULL) or (g is NULL) or (b is NULL): raise MemoryError() for i in range(256): r[i] = r_curve[i] & 0xFFFF g[i] = g_curve[i] & 0xFFFF b[i] = b_curve[i] & 0xFFFF rc = blueshift_vidmode_apply(use_crtcs, r, g, b) free(r) free(g) free(b) return rc def vidmode_close(): ''' Resource freeing stage of colour curve control ''' blueshift_vidmode_close()