Add initial SDP options.

This is step one of adding an SDP API: defining some
configurable settings for SDPs. This is based on options
that are currently supported in Asterisk.

Change-Id: I1ede91aafed403b12a9ccdfb91a88389baa7e5d7

1 files changed, 120 insertions, 0 deletions

diff --git a/main/sdp_options.c b/main/sdp_options.c
new file mode 100644
index 000000000..e18dfa55a
--- /dev/null
+++ b/main/sdp_options.c
@@ -0,0 +1,120 @@
+/*
+ * Asterisk -- An open source telephony toolkit.
+ *
+ * Copyright (C) 2017, Digium, Inc.
+ *
+ * Mark Michelson <mmichelson@digium.com>
+ *
+ * See http://www.asterisk.org for more information about
+ * the Asterisk project. Please do not directly contact
+ * any of the maintainers of this project for assistance;
+ * the project provides a web site, mailing lists and IRC
+ * channels for your use.
+ *
+ * This program is free software, distributed under the terms of
+ * the GNU General Public License Version 2. See the LICENSE file
+ * at the top of the source tree.
+ */
+
+#include "asterisk.h"
+
+#include "asterisk/utils.h"
+#include "asterisk/sdp_options.h"
+
+struct ast_sdp_options {
+	enum ast_sdp_options_ice ice;
+	int telephone_event;
+	enum ast_sdp_options_repr repr;
+	enum ast_sdp_options_encryption encryption;
+};
+
+#define DEFAULT_ICE AST_SDP_ICE_DISABLED
+#define DEFAULT_TELEPHONE_EVENT 0
+#define DEFAULT_REPR AST_SDP_REPR_STRING
+#define DEFAULT_ENCRYPTION AST_SDP_ENCRYPTION_DISABLED
+
+static void set_defaults(struct ast_sdp_options *options)
+{
+	options->ice = DEFAULT_ICE;
+	options->telephone_event = DEFAULT_TELEPHONE_EVENT;
+	options->repr = DEFAULT_REPR;
+	options->encryption = DEFAULT_ENCRYPTION;
+}
+
+struct ast_sdp_options *ast_sdp_options_alloc(void)
+{
+	struct ast_sdp_options *options;
+
+	options = ast_calloc(1, sizeof(*options));
+	if (!options) {
+		return NULL;
+	}
+	set_defaults(options);
+	return options;
+}
+
+void ast_sdp_options_free(struct ast_sdp_options *options)
+{
+	ast_free(options);
+}
+
+int ast_sdp_options_set_ice(struct ast_sdp_options *options, enum ast_sdp_options_ice ice_setting)
+{
+	ast_assert(options != NULL);
+
+	options->ice = ice_setting;
+	return 0;
+}
+
+enum ast_sdp_options_ice ast_sdp_options_get_ice(const struct ast_sdp_options *options)
+{
+	ast_assert(options != NULL);
+
+	return options->ice;
+}
+
+int ast_sdp_options_set_telephone_event(struct ast_sdp_options *options, int telephone_event_enabled)
+{
+	ast_assert(options != NULL);
+
+	options->telephone_event = telephone_event_enabled;
+	return 0;
+}
+
+int ast_sdp_options_get_telephone_event(const struct ast_sdp_options *options)
+{
+	ast_assert(options != NULL);
+
+	return options->telephone_event;
+}
+
+int ast_sdp_options_set_repr(struct ast_sdp_options *options, enum ast_sdp_options_repr repr)
+{
+	ast_assert(options != NULL);
+
+	options->repr = repr;
+	return 0;
+}
+
+enum ast_sdp_options_repr ast_sdp_options_get_repr(const struct ast_sdp_options *options)
+{
+	ast_assert(options != NULL);
+
+	return options->repr;
+}
+
+int ast_sdp_options_set_encryption(struct ast_sdp_options *options,
+	enum ast_sdp_options_encryption encryption)
+{
+	ast_assert(options != NULL);
+
+	options->encryption = encryption;
+	return 0;
+}
+
+enum ast_sdp_options_encryption ast_sdp_options_get_encryption(const struct ast_sdp_options *options)
+{
+	ast_assert(options != NULL);
+
+	return options->encryption;
+}