Add getting request id

Change-Id: I9e523282d6510a465da1c79a32b3a0da4e069bac

2 files changed, 23 insertions, 0 deletions

diff --git a/include/media_controller_private.h b/include/media_controller_private.h
index 84105ca..dc99203 100755
--- a/include/media_controller_private.h
+++ b/include/media_controller_private.h
@@ -270,6 +270,7 @@ char* mc_util_get_interface_name(const char *type, const char *name);
 int mc_util_make_filter_interface_name(const char *prefix, const char *filter, char **interface_name);
 int mc_util_set_command_available(const char *name, const char *command_type, const char *command);
 int mc_util_get_command_available(const char *name, const char *command_type, const char *command);
+int mc_util_get_request_id(unsigned int *req_id);
 int mc_safe_strtoi(const char *buffer, int *value);
 int mc_safe_strtoull(const char *buffer, unsigned long long *value);
 
diff --git a/src/media_controller_util.c b/src/media_controller_util.c
index 42964c8..9477505 100755
--- a/src/media_controller_util.c
+++ b/src/media_controller_util.c
@@ -23,6 +23,8 @@
 //#define UNIT_TEST	/* for testsuite */
 #define MAX_NAME_LENGTH 255
 
+static GMutex mutex_req_id;
+
 static void _mc_util_check_valid_name(const char *name, char **valid_name)
 {
 	char old_word[MAX_NAME_LENGTH] = {0, };
@@ -174,6 +176,26 @@ int mc_util_get_command_available(const char *name, const char *command_type, co
 	return ret;
 }
 
+int mc_util_get_request_id(unsigned int *req_id)
+{
+	int ret = MEDIA_CONTROLLER_ERROR_NONE;
+	static unsigned int request_id = 0;
+
+	mc_retvm_if(req_id == NULL, MEDIA_CONTROLLER_ERROR_INVALID_PARAMETER, "invalid parameter");
+
+	g_mutex_lock(&mutex_req_id);
+
+	if (request_id + 1 == UINT_MAX) {
+		request_id = 0;
+	}
+	request_id++;
+	*req_id = request_id;
+
+	g_mutex_unlock(&mutex_req_id);
+
+	return ret;
+}
+
 int mc_safe_strtoi(const char *buffer, int *value)
 {
 	char *end = NULL;