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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/>.
*/
#include "server.h"
#include "../state.h"
#include "../communication.h"
#include <string.h>
#if defined(__clang__)
# pragma GCC diagnostic ignored "-Wswitch-enum"
#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
*/
int handle_get_gamma_info(size_t conn, const char* restrict message_id, const char* restrict crtc)
{
struct output* restrict output;
char* restrict buf;
char depth[3];
const char* supported;
size_t n;
if (crtc == NULL) return send_error("protocol error: 'CRTC' header omitted");
output = output_find_by_name(crtc, outputs, outputs_n);
if (output == NULL)
return send_error("selected CRTC does not exist");
switch (output->depth)
{
case -2: strcpy(depth, "d"); break;
case -1: strcpy(depth, "f"); break;
default:
sprintf(depth, "%i", output->depth);
break;
}
switch (output->supported)
{
case LIBGAMMA_YES: supported = "yes"; break;
case LIBGAMMA_NO: supported = "no"; break;
default: supported = "maybe"; break;
}
MAKE_MESSAGE(&buf, &n, 0,
"In response to: %s\n"
"Cooperative: yes\n" /* In mds: say ‘no’, mds-coopgamma changes to ‘yes’.” */
"Depth: %s\n"
"Red size: %zu\n"
"Green size: %zu\n"
"Blue size: %zu\n"
"Gamma support: %s\n"
"\n",
message_id, depth, output->red_size, output->green_size,
output->blue_size, supported);
return send_message(conn, buf, n);
}
/**
* Set the gamma ramps on an output
*
* @param output The output
* @param ramps The gamma ramps
*/
void set_gamma(const struct output* restrict output, const union gamma_ramps* restrict ramps)
{
int r = 0;
if (connected)
{
switch (output->depth)
{
case 8: r = libgamma_crtc_set_gamma_ramps8(output->crtc, ramps->u8); break;
case 16: r = libgamma_crtc_set_gamma_ramps16(output->crtc, ramps->u16); break;
case 32: r = libgamma_crtc_set_gamma_ramps32(output->crtc, ramps->u32); break;
case 64: r = libgamma_crtc_set_gamma_ramps64(output->crtc, ramps->u64); break;
case -1: r = libgamma_crtc_set_gamma_rampsf(output->crtc, ramps->f); break;
case -2: r = libgamma_crtc_set_gamma_rampsd(output->crtc, ramps->d); break;
default:
abort();
}
if (r)
libgamma_perror(argv0, r); /* Not fatal */
}
}
/**
* Disconnect from the site
*
* @return Zero on success, -1 on error
*/
int disconnect(void)
{
if (!connected)
return 0;
connected = 0;
return 0; /* TODO disconnect() */
}
/**
* Reconnect to the site
*
* @return Zero on success, -1 on error
*/
int reconnect(void)
{
if (connected)
return 0;
connected = 1;
return 0; /* TODO reconnect() */
}
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