1 files changed, 76 insertions, 0 deletions
diff --git a/servers-coopgamma.h b/servers-coopgamma.h
new file mode 100644
index 0000000..584e760
--- /dev/null
+++ b/servers-coopgamma.h
@@ -0,0 +1,76 @@
+/* See LICENSE file for copyright and license details. */
+#ifndef SERVERS_COOPGAMMA_H
+#define SERVERS_COOPGAMMA_H
+
+#include "types-output.h"
+
+#include <stddef.h>
+
+#ifndef GCC_ONLY
+# if defined(__GNUC__) && !defined(__clang__)
+#  define GCC_ONLY(...) __VA_ARGS__
+# else
+#  define GCC_ONLY(...) /* nothing */
+# endif
+#endif
+
+/**
+ * Handle a closed connection
+ * 
+ * @param   client  The file descriptor for the client
+ * @return          Zero on success, -1 on error
+ */
+int connection_closed(int client);
+
+/**
+ * Handle a ‘Command: get-gamma’ message
+ * 
+ * @param   conn           The index of the connection
+ * @param   message_id     The value of the ‘Message ID’ header
+ * @param   crtc           The value of the ‘CRTC’ header
+ * @param   coalesce       The value of the ‘Coalesce’ header
+ * @param   high_priority  The value of the ‘High priority’ header
+ * @param   low_priority   The value of the ‘Low priority’ header
+ * @return                 Zero on success (even if ignored), -1 on error,
+ *                         1 if connection closed
+ */
+GCC_ONLY(__attribute__((__nonnull__(2))))
+int handle_get_gamma(size_t conn, const char *restrict message_id, const char *restrict crtc,
+                     const char *restrict coalesce, const char *restrict high_priority,
+                     const char *restrict low_priority);
+
+/**
+ * Handle a ‘Command: set-gamma’ message
+ * 
+ * @param   conn        The index of the connection
+ * @param   message_id  The value of the ‘Message ID’ header
+ * @param   crtc        The value of the ‘CRTC’ header
+ * @param   priority    The value of the ‘Priority’ header
+ * @param   class       The value of the ‘Class’ header
+ * @param   lifespan    The value of the ‘Lifespan’ header
+ * @return              Zero on success (even if ignored), -1 on error,
+ *                      1 if connection closed
+ */
+GCC_ONLY(__attribute__((__nonnull__(2))))
+int handle_set_gamma(size_t conn, const char *restrict message_id, const char *restrict crtc,
+                     const char *restrict priority, const char *restrict class, const char *restrict lifespan);
+
+/**
+ * Recalculate the resulting gamma and
+ * update push the new gamma ramps to the CRTC
+ * 
+ * @param   output         The output
+ * @param   first_updated  The index of the first added or removed filter
+ * @return                 Zero on success, -1 on error
+ */
+GCC_ONLY(__attribute__((__nonnull__)))
+int flush_filters(struct output *restrict output, size_t first_updated);
+
+/**
+ * Preserve current gamma ramps at priority 0 for all outputs
+ * 
+ * @return  Zero on success, -1 on error
+ */
+int preserve_gamma(void);
+
+#endif