From b13efce73e506b0feb4bb7c275c273a54ae6e716 Mon Sep 17 00:00:00 2001 From: Mattias Andrée Date: Tue, 22 Oct 2019 15:04:45 +0200 Subject: Change license and style, reorganise file, make makefile portable, and fix bugs MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Signed-off-by: Mattias Andrée --- servers-gamma.h | 60 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 60 insertions(+) create mode 100644 servers-gamma.h (limited to 'servers-gamma.h') diff --git a/servers-gamma.h b/servers-gamma.h new file mode 100644 index 0000000..e522cf5 --- /dev/null +++ b/servers-gamma.h @@ -0,0 +1,60 @@ +/* See LICENSE file for copyright and license details. */ +#ifndef SERVERS_GAMMA_H +#define SERVERS_GAMMA_H + +#include "types-output.h" + +#include + +#ifndef GCC_ONLY +# if defined(__GNUC__) && !defined(__clang__) +# define GCC_ONLY(...) __VA_ARGS__ +# else +# define GCC_ONLY(...) /* nothing */ +# endif +#endif + +/** + * 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 + * @return Zero on success (even if ignored), -1 on error, + * 1 if connection closed + */ +GCC_ONLY(__attribute__((__nonnull__(2)))) +int handle_get_gamma_info(size_t conn, const char *restrict message_id, const char *restrict crtc); + +/** + * Set the gamma ramps on an output + * + * @param output The output + * @param ramps The gamma ramps + */ +GCC_ONLY(__attribute__((__nonnull__))) +void set_gamma(const struct output *restrict output, const union gamma_ramps *restrict ramps); + +/** + * Store all current gamma ramps + * + * @return Zero on success, -1 on error + */ +int initialise_gamma_info(void); + +/** + * Store all current gamma ramps + */ +void store_gamma(void); + +/** + * Restore all gamma ramps + */ +void restore_gamma(void); + +/** + * Reapplu all gamma ramps + */ +void reapply_gamma(void); + +#endif -- cgit v1.2.3-70-g09d2