Begin Discovery

lib/CMakeLists.txt

@@ -21,7 +21,8 @@ set(HEADER_FILES
 		include/chiaki/video.h
 		include/chiaki/videoreceiver.h
 		include/chiaki/frameprocessor.h
-		include/chiaki/seqnum.h)
+		include/chiaki/seqnum.h
+		include/chiaki/discovery.h)
 
 set(SOURCE_FILES
 		src/common.c
@@ -45,7 +46,8 @@ set(SOURCE_FILES
 		src/audio.c
 		src/audioreceiver.c
 		src/videoreceiver.c
-		src/frameprocessor.c)
+		src/frameprocessor.c
+		src/discovery.c)
 
 add_subdirectory(protobuf)
 include_directories("${NANOPB_SOURCE_DIR}")

lib/include/chiaki/discovery.h

@@ -0,0 +1,53 @@
+/*
+ * This file is part of Chiaki.
+ *
+ * Chiaki 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.
+ *
+ * Chiaki 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 Chiaki.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#ifndef CHIAKI_DISCOVERY_H
+#define CHIAKI_DISCOVERY_H
+
+#include "common.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#define CHIAKI_DISCOVERY_PORT 987
+#define CHIAKI_DISCOVERY_PROTOCOL_VERSION "00020020"
+
+typedef enum chiaki_discovery_cmd_t
+{
+	CHIAKI_DISCOVERY_CMD_SRCH
+} ChiakiDiscoveryCmd;
+
+typedef struct chiaki_discovery_packet_t
+{
+	ChiakiDiscoveryCmd cmd;
+	char *protocol_version;
+} ChiakiDiscoveryPacket;
+
+typedef struct chiaki_discovery_t
+{
+	int socket;
+} ChiakiDiscovery;
+
+CHIAKI_EXPORT ChiakiErrorCode chiaki_discovery_init(ChiakiDiscovery *discovery);
+CHIAKI_EXPORT void chiaki_discovery_fini(ChiakiDiscovery *discovery);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif // CHIAKI_VIDEORECEIVER_H

lib/src/discovery.c

@@ -0,0 +1,42 @@
+/*
+ * This file is part of Chiaki.
+ *
+ * Chiaki 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.
+ *
+ * Chiaki 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 Chiaki.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#include <chiaki/discovery.h>
+
+#include <unistd.h>
+
+#include <sys/types.h>
+#include <sys/socket.h>
+
+
+static const char *packet_srch_template =
+		"SRCH * HTTP/1.1\n"
+  		"device-discovery-protocol-version:%s\n";
+
+
+CHIAKI_EXPORT ChiakiErrorCode chiaki_discovery_init(ChiakiDiscovery *discovery)
+{
+	discovery->socket = socket(AF_INET, SOCK_DGRAM, 0);
+	if(discovery->socket < 0)
+		return CHIAKI_ERR_UNKNOWN;
+	return CHIAKI_ERR_SUCCESS;
+}
+
+CHIAKI_EXPORT void chiaki_discovery_fini(ChiakiDiscovery *discovery)
+{
+	close(discovery->socket);
+}