misc

Signed-off-by: Mattias Andrée <maandree@kth.se>

1 files changed, 23 insertions, 0 deletions

diff --git a/libgamma_x_randr_crtc_initialise.c b/libgamma_x_randr_crtc_initialise.c
new file mode 100644
index 0000000..808b2c2
--- /dev/null
+++ b/libgamma_x_randr_crtc_initialise.c
@@ -0,0 +1,23 @@
+/* See LICENSE file for copyright and license details. */
+#define IN_LIBGAMMA_X_RANDR
+#include "common.h"
+
+
+/**
+ * Initialise an allocated CRTC state
+ * 
+ * @param   this       The CRTC state to initialise
+ * @param   partition  The partition state for the partition that the CRTC belongs to.
+ * @param   crtc       The the index of the CRTC within the site
+ * @return             Zero on success, otherwise (negative) the value of an
+ *                     error identifier provided by this library
+ */
+int
+libgamma_x_randr_crtc_initialise(libgamma_crtc_state_t *restrict this,
+                                 libgamma_partition_state_t *restrict partition, size_t crtc)
+{
+	libgamma_x_randr_partition_data_t *restrict screen_data = partition->data;
+	xcb_randr_crtc_t *restrict crtc_ids = screen_data->crtcs;
+	this->data = crtc_ids + crtc;
+	return crtc < partition->crtcs_available ? 0 : LIBGAMMA_NO_SUCH_CRTC;
+}