Add RTSP parser

limelight-common/Rtsp.h

@@ -0,0 +1,63 @@
+#include <stdio.h>
+#include <string.h>
+#include <stdlib.h>
+
+#define TYPE_REQUEST 0
+#define TYPE_RESPONSE 1
+
+#define TOKEN_OPTION 0
+
+#define RTSP_ERROR_SUCCESS 0
+#define RTSP_ERROR_NO_MEMORY -1
+#define RTSP_ERROR_MALFORMED -2
+
+#define SEQ_INVALID -1
+
+#define FLAG_ALLOCATED_OPTION_FIELDS 0x1
+#define FLAG_ALLOCATED_MESSAGE_BUFFER 0x2
+#define FLAG_ALLOCATED_OPTION_ITEMS 0x4
+
+/* Linked List to store the options */
+typedef struct _OPTION_ITEM {
+	char flags;
+	char *option;
+	char *content;
+	struct _OPTION_ITEM *next;
+} OPTION_ITEM, *POPTION_ITEM;
+
+/* RTSP Message *
+* In this implementation, a flag indicates the message type:
+* TYPE_REQUEST = 0
+* TYPE_RESPONSE = 1 */
+typedef struct _RTSP_MESSAGE {
+	char type;
+	char flags;
+	int sequenceNumber;
+	char *protocol;
+	POPTION_ITEM options;
+	char *payload;
+
+	char* messageBuffer;
+
+	union {
+		struct {
+			/* Request fields */
+			char *command;
+			char *target;
+		} request;
+		struct {
+			/* Response fields */
+			char *statusString;
+			int statusCode;
+		} response;
+	} message;
+} RTSP_MESSAGE, *PRTSP_MESSAGE;
+
+int parseRtspMessage(PRTSP_MESSAGE msg, char *rtspMessage);
+void freeMessage(PRTSP_MESSAGE msg);
+void createRtspResponse(PRTSP_MESSAGE msg, char* messageBuffer, int flags, char *protocol, int statusCode, char *statusString, int sequenceNumber, POPTION_ITEM optionsHead, char *payload);
+void createRtspRequest(PRTSP_MESSAGE msg, char* messageBuffer, int flags, char *command, char *target, char *protocol, int sequenceNumber, POPTION_ITEM optionsHead, char *payload);
+char *getOptionContent(POPTION_ITEM optionsHead, char *option);
+void insertOption(POPTION_ITEM *optionsHead, POPTION_ITEM opt);
+void freeOptionList(POPTION_ITEM optionsHead);
+char *serializeRtspMessage(PRTSP_MESSAGE msg, int *serializedLength);