use randr

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

1 files changed, 40 insertions, 0 deletions

diff --git a/src/blueshift_randr.pyx b/src/blueshift_randr.pyx
new file mode 100644
index 0000000..e022714
--- /dev/null
+++ b/src/blueshift_randr.pyx
@@ -0,0 +1,40 @@
+# -*- python -*-
+cimport cython
+from libc.stdlib cimport malloc, free
+
+
+cdef extern int blueshift_randr_open(int use_screen)
+cdef extern int blueshift_randr_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_randr_close()
+
+
+def randr_open(int use_screen):
+    return blueshift_randr_open(use_screen)
+
+
+def randr_apply(unsigned long long use_crtcs, r_curve, g_curve, b_curve):
+    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]
+        g[i] = g_curve[i]
+        b[i] = b_curve[i]
+    rc = blueshift_randr_apply(use_crtcs, r, g, b)
+    free(r)
+    free(g)
+    free(b)
+    return rc
+
+
+def randr_close():
+    blueshift_randr_close()
+