/**
* 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>
/**
* 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
*/
int handle_enumerate_crtcs(size_t conn, const char* restrict message_id)
{
size_t i, n = 0, len;
char* restrict buf;
for (i = 0; i < outputs_n; i++)
n += strlen(outputs[i].name) + 1;
MAKE_MESSAGE(&buf, &n, 0,
"Command: crtc-enumeration\n"
"In response to: %s\n"
"Length: %zu\n"
"\n",
message_id, n);
for (i = 0; i < outputs_n; i++)
{
len = strlen(outputs[i].name);
memcpy(buf + n, outputs[i].name, len);
buf[n + len] = '\n';
n += len + 1;
}
return send_message(conn, buf, n);
}
/**
* 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
*/
char* get_crtc_name(const libgamma_crtc_information_t* restrict info,
const libgamma_crtc_state_t* restrict crtc)
{
if ((info->edid_error == 0) && (info->edid != NULL))
return libgamma_behex_edid(info->edid, info->edid_length);
else if ((info->connector_name_error == 0) && (info->connector_name != NULL))
{
char* name = malloc(3 * sizeof(size_t) + strlen(info->connector_name) + 2);
if (name != NULL)
sprintf(name, "%zu.%s", crtc->partition->partition, info->connector_name);
return name;
}
else
{
char* name = malloc(2 * 3 * sizeof(size_t) + 2);
if (name != NULL)
sprintf(name, "%zu.%zu", crtc->partition->partition, crtc->crtc);
return name;
}
}
