ffplay: Exit on ctrl-c.

This allows to get out of ffplay if it or SDL got stuck.
This for example happens when the audio driver is playing something
else and doesnt support mixing multiple sources.
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
Signed-off-by: Marton Balint <cus@passwd.hu>

ffplay.c

@@ -27,6 +27,7 @@
 #include <inttypes.h>
 #include <math.h>
 #include <limits.h>
+#include <signal.h>
 #include "libavutil/avstring.h"
 #include "libavutil/colorspace.h"
 #include "libavutil/mathematics.h"
@@ -925,6 +926,11 @@ static void do_exit(VideoState *is)
     exit(0);
 }
 
+static void sigterm_handler(int sig)
+{
+    exit(123);
+}
+
 static int video_open(VideoState *is, int force_set_video_mode)
 {
     int flags = SDL_HWSURFACE | SDL_ASYNCBLIT | SDL_HWACCEL;
@@ -3182,6 +3188,9 @@ int main(int argc, char **argv)
 
     init_opts();
 
+    signal(SIGINT , sigterm_handler); /* Interrupt (ANSI).    */
+    signal(SIGTERM, sigterm_handler); /* Termination (ANSI).  */
+
     show_banner(argc, argv, options);
 
     parse_options(NULL, argc, argv, options, opt_input_file);