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/**
* libgamma -- Display server abstraction layer for gamma ramp adjustments
* Copyright (C) 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 "methods.h"
#include <libgamma.h>
#include <stdio.h>
#include <stdlib.h>
/**
* Get the name representation of an
* adjustment method by its identifier.
*
* @param method The identifier of the adjustment method.
* @return The name of the adjustment method, should not be `free`:d.
*/
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)";
}
}
/**
* Print a list of adjustment methods.
*
* @param description Precursory text for the list.
* @param methods An array allocated to fit all adjustment methods.
* @param operation See the `operation` parameter for `libgamma_list_methods`.
*/
void list_methods(const char* description, int* methods, int operation)
{
/* Get adjustment method list. */
size_t i, n = libgamma_list_methods(methods, LIBGAMMA_METHOD_COUNT, operation);
/* Print adjustment method list. */
printf("%s:\n", description);
for (i = 0; i < n; i++)
printf(" %s\n", method_name(methods[i]));
printf("\n");
}
/**
* Print all lists, of adjustments methods, that
* are made available by `libgamma_list_methods`.
*/
void list_methods_lists(void)
{
/* Allocate a list for adjustment methods that is
large enough if the program is up to date with
the library. */
int* methods = malloc(LIBGAMMA_METHOD_COUNT * sizeof(int));
/* Get a list of all adjustment methods. */
size_t n = libgamma_list_methods(methods, LIBGAMMA_METHOD_COUNT, 4);
/* If we got more adjustment methods than we expected
the program needs to be recompiled, and we need to
reallocate the list so it is large enough. */
if (n > LIBGAMMA_METHOD_COUNT)
{
printf("Warning: you should to recompile the program, libgamma has been updated.\n");
methods = realloc(methods, n * sizeof(int));
}
/* Print adjustment method lists. */
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);
}
/**
* Test the availability (determined
* at compile-time) of all adjustment
* methods and one that does not exist.
*/
void method_availability(void)
{
int method;
/* The availability of an adjustmen method
whose identifier is invalid. It should
say it is not available. */
printf("Testing the availability of a non-existing adjustment method: ");
printf("%s\n", libgamma_is_method_available(-1) ? "available" : "not available");
/* Test the availability of the adjustment
methods that does exist. */
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");
}
/**
* List the default site and the environment
* variable, if any, that determines the
* default site, for all availiable adjustment
* methods.
*/
void list_default_sites(void)
{
int method;
for (method = 0; method < LIBGAMMA_METHOD_COUNT; method++)
/* Include only available adjustment methods.
If an adjustment method is not available
it should print "(null)", but as that can
be misguiding we exclude those methods. */
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");
}
}
/**
* Print the capabilities of all availiable
* adjustment methods.
*/
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))
{
/* Print adjustment method name and get the
adjustment method's capabilities. */
printf("Capabilities of %s:\n", method_name(method));
libgamma_method_capabilities(&caps, method);
/* Print capabilities. The CRTC information
capabilities is printed hexadecimal. See
the `LIBGAMMA_CRTC_INFO_*` definitions in
`src/lib/libgamma-method.h` for what each
bit represents. */
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");
}
}
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