More refactoring

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

1 files changed, 101 insertions, 0 deletions

diff --git a/src/servers/coopgamma.h b/src/servers/coopgamma.h
new file mode 100644
index 0000000..5a9f7d9
--- /dev/null
+++ b/src/servers/coopgamma.h
@@ -0,0 +1,101 @@
+/**
+ * coopgammad -- Cooperative gamma server
+ * Copyright (C) 2016  Mattias Andrée (maandree@kth.se)
+ * 
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU 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 General Public License for more details.
+ * 
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+#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
+