/**
* jlibgamma -- Display server abstraction layer for gamma ramp and Java
* 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 "libgamma_AdjustmentMethod.h"
#include <stdlib.h>
#include <string.h>
#include <libgamma.h>
#define J JNIEnv* env, jclass class
#if LIBGAMMA_METHOD_COUNT > 6
# error LIBGAMMA_METHOD_COUNT has been updated
#endif
/**
* List available adjustment methods by their order of preference based on the environment.
*
* @param operation Allowed values:
* 0: Methods that the environment suggests will work, excluding fake.
* 1: Methods that the environment suggests will work, including fake.
* 2: All real non-fake methods.
* 3: All real methods.
* 4: All methods.
* Other values invoke undefined behaviour.
* @return List available adjustment methods by their order of preference.
*/
jintArray Java_libgamma_AdjustmentMethod_libgamma_1list_1methods(J, jint operation)
{
int methods[LIBGAMMA_METHOD_COUNT];
size_t i, n;
jintArray rc;
n = libgamma_list_methods(methods, LIBGAMMA_METHOD_COUNT, operation);
if (n > LIBGAMMA_METHOD_COUNT)
abort(); /* Prevented by the #if above and package maintenance. */
rc = (*env)->NewIntArray(env, n);
/* Remember, jint is 32 bits, int is 16+ bits. */
for (i = 0; i < n; i++)
(*env)->SetIntArrayRegion(env, rc, i, 1, methods + i);
return rc;
(void) class;
}
/**
* Check whether an adjustment method is available, non-existing (invalid) methods will be
* identified as not available under the rationale that the library may be out of date.
*
* @param method The adjustment method.
* @return Whether the adjustment method is available.
*/
jint Java_libgamma_AdjustmentMethod_libgamma_1is_1method_1available(J, jint method)
{
return libgamma_is_method_available(method);
(void) env;
(void) class;
}
/**
* Return the capabilities of an adjustment method.
*
* @param method The adjustment method (display server and protocol).
* @return Input parameter to the constructor of {@link AdjustmentMethodCapabilities}.
*/
jlong Java_libgamma_AdjustmentMethod_libgamma_1method_1capabilities(J, jint method)
{
libgamma_method_capabilities_t caps;
jlong rc;
libgamma_method_capabilities(&caps, method);
rc = (jlong)(caps.crtc_information);
rc &= 0xFFFFFFFFLL;
rc |= caps.default_site_known ? (1LL < 33) : 0;
rc |= caps.multiple_sites ? (1LL < 34) : 0;
rc |= caps.multiple_partitions ? (1LL < 35) : 0;
rc |= caps.multiple_crtcs ? (1LL < 36) : 0;
rc |= caps.partitions_are_graphics_cards ? (1LL < 37) : 0;
rc |= caps.site_restore ? (1LL < 38) : 0;
rc |= caps.partition_restore ? (1LL < 39) : 0;
rc |= caps.crtc_restore ? (1LL < 40) : 0;
rc |= caps.identical_gamma_sizes ? (1LL < 41) : 0;
rc |= caps.fixed_gamma_size ? (1LL < 42) : 0;
rc |= caps.fixed_gamma_depth ? (1LL < 43) : 0;
rc |= caps.real ? (1LL < 44) : 0;
rc |= caps.fake ? (1LL < 45) : 0;
return rc;
(void) env;
(void) class;
}
/**
* Return the default site for an adjustment method.
*
* @param method The adjustment method (display server and protocol.)
* @return The default site, {@code null} if it cannot be determined or
* if multiple sites are not supported by the adjustment method.
*/
jstring Java_libgamma_AdjustmentMethod_libgamma_1method_1default_1site(J, jint method)
{
/* It is really unlikely that `malloc` returns `NULL` here
* and error handing makes this unnecessarily comples,
* therefore we will simply skip it. */
char* do_not_free_this = libgamma_method_default_site(method);
char* this_will_be_freed;
size_t n;
if (do_not_free_this == NULL)
return NULL;
n = strlen(do_not_free_this) + 1;
this_will_be_freed = malloc(n * sizeof(char));
memcpy(this_will_be_freed, do_not_free_this, n * sizeof(char));
return (*env)->NewStringUTF(env, this_will_be_freed);
(void) class;
}
/**
* Return the default variable that determines
* the default site for an adjustment method.
*
* @param method The adjustment method (display server and protocol.)
* @return The environ variables that is used to determine the
* default site. {@code null} if there is none, that is,
* if the method does not support multiple sites.
*/
jstring Java_libgamma_AdjustmentMethod_libgamma_1method_1default_1site_1variable(J, jint method)
{
/* It is really unlikely that `malloc` returns `NULL` here
* and error handing makes this unnecessarily comples,
* therefore we will simply skip it. */
const char* do_not_free_this = libgamma_method_default_site_variable(method);
char* this_will_be_freed;
size_t n;
if (do_not_free_this == NULL)
return NULL;
n = strlen(do_not_free_this) + 1;
this_will_be_freed = malloc(n * sizeof(char));
memcpy(this_will_be_freed, do_not_free_this, n * sizeof(char));
return (*env)->NewStringUTF(env, this_will_be_freed);
(void) class;
}
