misc

Signed-off-by: Mattias Andrée <maandree@kth.se>

1 files changed, 62 insertions, 0 deletions

diff --git a/libgamma_dummy_site_initialise.c b/libgamma_dummy_site_initialise.c
new file mode 100644
index 0000000..066f145
--- /dev/null
+++ b/libgamma_dummy_site_initialise.c
@@ -0,0 +1,62 @@
+/* See LICENSE file for copyright and license details. */
+#include "common.h"
+
+
+/**
+ * Initialise an allocated site state
+ * 
+ * @param   this    The site state to initialise
+ * @param   site    The site identifier, unless it is `NULL` it must a
+ *                  `free`:able. Once the state is destroyed the library
+ *                  will attempt to free it. There you should not free
+ *                  it yourself, and it must not be a string constant
+ *                  or allocate on the stack. Note however that it will
+ *                  not be free:d if this function fails.
+ * @return          Zero on success, otherwise (negative) the value of an
+ *                  error identifier provided by this library
+ */
+int
+libgamma_dummy_site_initialise(libgamma_site_state_t *restrict this, char *restrict site)
+{
+	libgamma_dummy_site_t *data = NULL;
+	size_t i, sites, crtcs;
+
+	sites = libgamma_dummy_internal_configurations.site_count;
+	if (!libgamma_dummy_internal_configurations.capabilities.multiple_sites)
+		sites = !!sites;
+	this->data = NULL;
+
+	if (site && *site && (atoll(site) < 0 || sites <= (unsigned long long)atoll(site)))
+		return LIBGAMMA_NO_SUCH_SITE;
+
+	data = malloc(sizeof(libgamma_dummy_site_t));
+	if (!data)
+		goto fail;
+
+	this->data = data;
+	data->state = this;
+
+	data->partition_count = libgamma_dummy_internal_configurations.default_partition_count;
+	if (!libgamma_dummy_internal_configurations.capabilities.multiple_partitions)
+		data->partition_count = !!data->partition_count;
+
+	crtcs = libgamma_dummy_internal_configurations.default_crtc_count;
+	if (!libgamma_dummy_internal_configurations.capabilities.multiple_crtcs)
+		crtcs = !!crtcs;
+
+	data->partitions = malloc(data->partition_count * sizeof(libgamma_dummy_partition_t));
+	if (!data->partitions)
+		goto fail;
+
+	for (i = 0; i < data->partition_count; i++)
+		data->partitions[i].crtc_count = crtcs;
+
+	this->partitions_available = data->partition_count;
+
+	return 0;
+
+fail:
+	free(data);
+	this->data = NULL;
+	return LIBGAMMA_ERRNO_SET;
+}