shrecord: signal main thread to call cleanup()

Don't call shrecord_cleanup() from the signal handler directly, but
instead flag to the shrecord_main thread to clean itself up.

src/main.c

@@ -40,7 +40,7 @@ usage (const char * progname)
 void sig_handler(int sig)
 {
 #ifdef HAVE_SHCODECS
-        shrecord_cleanup ();
+        shrecord_sighandler ();
 #endif
 
 #ifdef DEBUG

src/shrecord.c

@@ -267,7 +267,8 @@ static int write_output(SHCodecs_Encoder *encoder,
 	return (alive?0:1);
 }
 
-void shrecord_cleanup (void)
+static void
+shrecord_cleanup (void)
 {
 	double time;
 	struct private_data *pvt = &pvt_data;
@@ -335,6 +336,16 @@ void shrecord_cleanup (void)
 	uiomux_close (pvt->uiomux);
 }
 
+void
+shrecord_sighandler (void)
+{
+	struct private_data *pvt = &pvt_data;
+
+	alive = 0;
+
+	pthread_join (pvt->main_thread, NULL);
+}
+
 struct camera_data * get_camera (char * devicename, int width, int height)
 {
 	struct private_data *pvt = &pvt_data;

src/shrecord.h

@@ -5,6 +5,6 @@ list_t * shrecord_resources (Dictionary * config);
 
 int shrecord_init (void);
 int shrecord_run (void);
-void shrecord_cleanup (void);
+void shrecord_sighandler (void);
 
 #endif /* __SHRECORD_H__ */