/**
* libgamma — Display server abstraction layer for gamma ramp adjustments
* Copyright © 2014 Mattias Andrée (maandree@member.fsf.org)
*
* This library 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 library 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 library. If not, see <http://www.gnu.org/licenses/>.
*/
#include <libgamma.h>
#include <stdio.h>
#include <stdlib.h>
#include <errno.h>
#include <string.h>
#ifdef __GNUC__
# if LIBGAMMA_ERROR_MIN < -46
# warning New error codes have been added to libgamma.
# endif
# if LIBGAMMA_METHOD_COUNT > 6
# warning New adjust methods has been added to libgamma
# endif
# if LIBGAMMA_CONNECTOR_TYPE_COUNT > 19
# warning New connector types have been added to libgamma.
# endif
# if LIBGAMMA_SUBPIXEL_ORDER_COUNT > 6
# warning New subpixel orders have been added to libgamma.
# endif
# if LIBGAMMA_CRTC_INFO_COUNT > 13
# warning New CRTC information fields have been added to libgamma.
# endif
#endif
static const char* method_name(int method)
{
switch (method)
{
case LIBGAMMA_METHOD_DUMMY: return "dummy";
case LIBGAMMA_METHOD_X_RANDR: return "RandR X extension";
case LIBGAMMA_METHOD_X_VIDMODE: return "VidMode X extension";
case LIBGAMMA_METHOD_LINUX_DRM: return "Linux DRM";
case LIBGAMMA_METHOD_W32_GDI: return "Windows GDI";
case LIBGAMMA_METHOD_QUARTZ_CORE_GRAPHICS: return "Quartz using CoreGraphics";
default:
return "(unknown)";
}
}
static void list_methods(const char* description, int* methods, int operation)
{
size_t i, n = libgamma_list_methods(methods, LIBGAMMA_METHOD_COUNT, operation);
printf("%s:\n", description);
for (i = 0; i < n; i++)
printf(" %s\n", method_name(methods[i]));
printf("\n");
}
static void list_methods_lists(void)
{
int* methods = malloc(LIBGAMMA_METHOD_COUNT * sizeof(int));
size_t n = libgamma_list_methods(methods, LIBGAMMA_METHOD_COUNT, 4);
if (n > LIBGAMMA_METHOD_COUNT)
{
printf("Warning: you should to recompile the program, libgamma has been updated.\n");
methods = realloc(methods, n * sizeof(int));
}
list_methods("Available adjustment methods", methods, 4);
list_methods("Available real adjustment methods", methods, 3);
list_methods("Available real non-fake adjustment methods", methods, 2);
list_methods("Recommended adjustment methods", methods, 1);
list_methods("Recommended non-fake adjustment methods", methods, 0);
free(methods);
}
static void method_availability(void)
{
int method;
printf("Testing the availability of an non-existing adjustment method: ");
printf("%s\n", libgamma_is_method_available(9999) ? "available" : "not available");
for (method = 0; method < LIBGAMMA_METHOD_COUNT; method++)
{
printf("Testing the availability of %s: ", method_name(method));
printf("%s\n", libgamma_is_method_available(method) ? "available" : "not available");
}
printf("\n");
}
static void list_default_sites(void)
{
int method;
for (method = 0; method < LIBGAMMA_METHOD_COUNT; method++)
if (libgamma_is_method_available(method))
{
printf("Default site for %s:\n", method_name(method));
printf(" Variable: %s\n", libgamma_method_default_site_variable(method));
printf(" Site name: %s\n", libgamma_method_default_site(method));
printf("\n");
}
}
static void method_capabilities(void)
{
libgamma_method_capabilities_t caps;
int method;
for (method = 0; method < LIBGAMMA_METHOD_COUNT; method++)
if (libgamma_is_method_available(method))
{
printf("Capabilities of %s:\n", method_name(method));
libgamma_method_capabilities(&caps, method);
printf(" %s: %X\n", "CRTC information", caps.crtc_information);
printf(" %s: %s\n", "Default site known", caps.default_site_known ? "yes" : "no");
printf(" %s: %s\n", "Multiple sites", caps.multiple_sites ? "yes" : "no");
printf(" %s: %s\n", "Multiple partitions", caps.multiple_partitions ? "yes" : "no");
printf(" %s: %s\n", "Multiple crtcs", caps.multiple_crtcs ? "yes" : "no");
printf(" %s: %s\n", "Graphics cards", caps.partitions_are_graphics_cards ? "yes" : "no");
printf(" %s: %s\n", "Site restore", caps.site_restore ? "yes" : "no");
printf(" %s: %s\n", "Partition restore", caps.partition_restore ? "yes" : "no");
printf(" %s: %s\n", "CRTC restore", caps.crtc_restore ? "yes" : "no");
printf(" %s: %s\n", "Identical gamma sizes", caps.identical_gamma_sizes ? "yes" : "no");
printf(" %s: %s\n", "Fixed gamma size", caps.fixed_gamma_size ? "yes" : "no");
printf(" %s: %s\n", "Fixed gamma depth", caps.fixed_gamma_depth ? "yes" : "no");
printf(" %s: %s\n", "Real method", caps.real ? "yes" : "no");
printf(" %s: %s\n", "Fake method", caps.fake ? "yes" : "no");
printf("\n");
}
}
static void error_test(void)
{
int i;
printf("Testing error API using LIBGAMMA_STATE_UNKNOWN:\n");
printf(" Expecting %i: %i\n", LIBGAMMA_STATE_UNKNOWN, libgamma_value_of_error("LIBGAMMA_STATE_UNKNOWN"));
printf(" Expecting %s: %s\n", "LIBGAMMA_STATE_UNKNOWN", libgamma_name_of_error(LIBGAMMA_STATE_UNKNOWN));
printf("\n");
printf("Testing libgamma_perror:\n");
libgamma_perror(" Expecting LIBGAMMA_STATE_UNKNOWN", LIBGAMMA_STATE_UNKNOWN);
libgamma_perror(" Expecting an description for ENOMEM", ENOMEM);
libgamma_perror(" Expecting an description for successfulness", 0);
libgamma_perror(" Expecting an description for ENOMEM", (errno = ENOMEM, LIBGAMMA_ERRNO_SET));
libgamma_group_gid = 10;
libgamma_group_name = "test";
libgamma_perror(" Expecting 'LIBGAMMA_DEVICE_REQUIRE_GROUP: test (10)'", LIBGAMMA_DEVICE_REQUIRE_GROUP);
libgamma_group_name = NULL;
libgamma_perror(" Expecting 'LIBGAMMA_DEVICE_REQUIRE_GROUP: 10'", LIBGAMMA_DEVICE_REQUIRE_GROUP);
printf("\n");
printf("Testing error code uniqueness: ");
for (i = -1; i >= LIBGAMMA_ERROR_MIN; i--)
if (libgamma_value_of_error(libgamma_name_of_error(i)) != i)
{
printf("failed\n");
goto not_unique;
}
printf("passed\n");
not_unique:
printf("\n");
}
static int select_monitor(libgamma_site_state_t* restrict site_state,
libgamma_partition_state_t* restrict part_state,
libgamma_crtc_state_t* restrict crtc_state)
{
int method;
char* site;
char* tmp;
char buf[256];
int r;
printf("Select adjustment method:\n");
for (method = 0; method < LIBGAMMA_METHOD_COUNT; method++)
printf(" %i: %s\n", method, method_name(method));
printf("> ");
fflush(stdout);
fgets(buf, sizeof(buf) / sizeof(char), stdin);
method = atoi(buf);
printf("Select site: ");
fflush(stdout);
fgets(buf, sizeof(buf) / sizeof(char), stdin);
tmp = strchr(buf, '\n');
if (tmp != NULL)
*tmp = '\0';
if (buf[0] == '\0')
site = NULL;
else
{
site = malloc((strlen(buf) + 1) * sizeof(char));
memcpy(site, buf, strlen(buf) + 1);
}
if ((r = libgamma_site_initialise(site_state, method, site)))
{
free(site);
return libgamma_perror("error", r), 1;
}
if (site_state->partitions_available == 0)
{
libgamma_site_free(site_state);
return printf("No partitions found\n"), 1;
}
printf("Select partition [0, %lu]: ", site_state->partitions_available - 1);
fflush(stdout);
fgets(buf, sizeof(buf) / sizeof(char), stdin);
if ((r = libgamma_partition_initialise(part_state, site_state, (size_t)atoll(buf))))
{
libgamma_site_free(site_state);
return libgamma_perror("error", r), 1;
}
if (part_state->crtcs_available == 0)
{
libgamma_partition_free(part_state);
libgamma_site_free(site_state);
return printf("No CRTC:s found\n"), 1;
}
printf("Select CRTC [0, %lu]: ", part_state->crtcs_available - 1);
fflush(stdout);
fgets(buf, sizeof(buf) / sizeof(char), stdin);
if ((r = libgamma_crtc_initialise(crtc_state, part_state, (size_t)atoll(buf))))
{
libgamma_partition_free(part_state);
libgamma_site_free(site_state);
return libgamma_perror("error", r), 1;
}
return 0;
}
int main(void)
{
libgamma_site_state_t* restrict site_state = malloc(sizeof(libgamma_site_state_t));
libgamma_partition_state_t* restrict part_state = malloc(sizeof(libgamma_partition_state_t));
libgamma_crtc_state_t* restrict crtc_state = malloc(sizeof(libgamma_crtc_state_t));
list_methods_lists();
method_availability();
list_default_sites();
method_capabilities();
error_test();
if (select_monitor(site_state, part_state, crtc_state))
return 1;
libgamma_crtc_free(crtc_state);
libgamma_partition_free(part_state);
libgamma_site_free(site_state);
return 0;
}
