add vidmode support

Signed-off-by: Mattias Andrée <maandree@operamail.com>

1 files changed, 74 insertions, 0 deletions

diff --git a/src/blueshift_vidmode.pyx b/src/blueshift_vidmode.pyx
new file mode 100644
index 0000000..7d29655
--- /dev/null
+++ b/src/blueshift_vidmode.pyx
@@ -0,0 +1,74 @@
+# -*- 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 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_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()
+