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/**
* 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_CRTC_H
#define SERVERS_CRTC_H
#include "../types/output.h"
#include <libgamma.h>
#ifndef GCC_ONLY
# if defined(__GNUC__) && !defined(__clang__)
# define GCC_ONLY(...) __VA_ARGS__
# else
# define GCC_ONLY(...) /* nothing */
# endif
#endif
/**
* Handle a ‘Command: enumerate-crtcs’ message
*
* @param conn The index of the connection
* @param message_id The value of the ‘Message ID’ header
* @return Zero on success (even if ignored), -1 on error,
* 1 if connection closed
*/
GCC_ONLY(__attribute__((nonnull)))
int handle_enumerate_crtcs(size_t conn, const char* restrict message_id);
/**
* Get the name of a CRTC
*
* @param info Information about the CRTC
* @param crtc libgamma's state for the CRTC
* @return The name of the CRTC, `NULL` on error
*/
GCC_ONLY(__attribute__((nonnull)))
char* get_crtc_name(const libgamma_crtc_information_t* restrict info,
const libgamma_crtc_state_t* restrict crtc);
/**
* Get partitions and CRTC:s
*
* @return Zero on success, -1 on error
*/
int initialise_crtcs(void);
/**
* Merge the new state with an old state
*
* @param old_outputs The old `outputs`
* @param old_outputs_n The old `outputs_n`
* @return Zero on success, -1 on error
*/
int merge_state(struct output* restrict old_outputs, size_t old_outputs_n);
#endif
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