1 files changed, 121 insertions, 0 deletions
diff --git a/libgamma_Site.c b/libgamma_Site.c
new file mode 100644
index 0000000..b28244a
--- /dev/null
+++ b/libgamma_Site.c
@@ -0,0 +1,121 @@
+/* See LICENSE file for copyright and license details. */
+#include "libgamma_Site.h"
+#include <errno.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include <libgamma.h>
+
+
+/**
+ * Make a failure-return
+ * 
+ * @param   error_code  The error code returned from the failing function or zero to read `errno`
+ * @return              The object to return
+ */
+static jlongArray
+fail(JNIEnv *env, int error_code)
+{
+	jlongArray rc = (*env)->NewLongArray(env, 3);
+	jlong e, z = 0;
+	if ((error_code == LIBGAMMA_ERRNO_SET) || !error_code)
+		error_code = errno;
+	e = (jlong)error_code;
+	(*env)->SetLongArrayRegion(env, rc, 0, 1, &z);
+	(*env)->SetLongArrayRegion(env, rc, 1, 1, &z);
+	(*env)->SetLongArrayRegion(env, rc, 2, 1, &e);
+	return rc;
+}
+
+/**
+ * Make a success-return
+ * 
+ * @param   state  The native object
+ * @param   count  The subelement count
+ * @return         The object to return
+ */
+static jlongArray
+ok(JNIEnv *env, void *state, size_t count)
+{
+	jlong a = (jlong)(size_t)state;
+	jlong b = (jlong)count, z = 0;
+	jlongArray rc = (*env)->NewLongArray(env, 3);
+	(*env)->SetLongArrayRegion(env, rc, 0, 1, &a);
+	(*env)->SetLongArrayRegion(env, rc, 1, 1, &b);
+	(*env)->SetLongArrayRegion(env, rc, 2, 1, &z);
+	return rc;
+}
+
+/**
+ * Create a site state
+ * 
+ * @param   method  The adjustment method (display server and protocol)
+ * @param   site    The site identifier
+ * @return          Element 0: The value for {@link #address}
+ *                  Element 1: The value for {@link #partitions_available}
+ *                  Element 2: Error code, zero on success
+ */
+jlongArray
+Java_libgamma_Site_libgamma_1site_1create(JNIEnv *env, jclass class, jint method, jstring site)
+{
+	libgamma_site_state_t *state = malloc(sizeof(libgamma_site_state_t));
+	const char *site_chars;
+	char *site_;
+	int r;
+	int saved_errno = 0;
+	size_t n;
+	if (site) {
+		site_chars = (*env)->GetStringUTFChars(env, site, NULL);
+		n = strlen(site_chars) + 1;
+		site_ = malloc(n * sizeof(char));
+		if (!site_)
+			saved_errno = errno;
+		else
+			memcpy(site_, site_chars, n * sizeof(char));
+		(*env)->ReleaseStringUTFChars(env, site, site_chars);
+		if (saved_errno)
+			return fail(env, errno);
+	} else {
+		site_ = NULL;
+	}
+	if (!state)
+		return fail(env, 0);
+	r = libgamma_site_initialise(state, method, site_);
+	if (r)
+		return fail(env, r);
+	return ok(env, state, state->partitions_available);
+	(void) class;
+}
+
+/**
+ * Release all resources held by a site state
+ * and free the site state pointer
+ * 
+ * @param  address  The site state
+ */
+void
+Java_libgamma_Site_libgamma_1site_1free(JNIEnv *env, jclass class, jlong address)
+{
+	void *this = (void *)(size_t)address;
+	libgamma_site_free(this);
+	(void) env;
+	(void) class;
+}
+
+/**
+ * Restore the gamma ramps all CRTC:s within a site to the system settings
+ * 
+ * @param   address  The site state
+ * @return           Zero on success, and error code on failure
+ */
+jint
+Java_libgamma_Site_libgamma_1site_1restore(JNIEnv *env, jclass class, jlong address)
+{
+	void *this = (void *)(size_t)address;
+	int r = libgamma_site_restore(this);
+	if (r)
+		return r == LIBGAMMA_ERRNO_SET ? errno : r;
+	return 0;
+	(void) env;
+	(void) class;
+}