3 files changed, 44 insertions, 0 deletions

diff --git a/src/xine-engine/post.c b/src/xine-engine/post.c
index 6ae96e982..58e9b633c 100644
--- a/src/xine-engine/post.c
+++ b/src/xine-engine/post.c
@@ -192,6 +192,7 @@ static int post_video_rewire(xine_post_out_t *output_gen, void *data) {
   if (!new_port)
     return 0;
   
+  this->running_ticket->lock_port_rewiring(this->running_ticket, -1);
   this->running_ticket->revoke(this->running_ticket, 1);
   
   if (input_port->original_port->status(input_port->original_port, input_port->stream,
@@ -202,6 +203,7 @@ static int post_video_rewire(xine_post_out_t *output_gen, void *data) {
   input_port->original_port = new_port;
   
   this->running_ticket->issue(this->running_ticket, 1);
+  this->running_ticket->unlock_port_rewiring(this->running_ticket);
   
   return 1;
 }
@@ -680,6 +682,7 @@ static int post_audio_rewire(xine_post_out_t *output_gen, void *data) {
   if (!new_port)
     return 0;
   
+  this->running_ticket->lock_port_rewiring(this->running_ticket, -1);
   this->running_ticket->revoke(this->running_ticket, 1);
   
   if (input_port->original_port->status(input_port->original_port, input_port->stream,
@@ -690,6 +693,7 @@ static int post_audio_rewire(xine_post_out_t *output_gen, void *data) {
   input_port->original_port = new_port;
   
   this->running_ticket->issue(this->running_ticket, 1);
+  this->running_ticket->unlock_port_rewiring(this->running_ticket);
   
   return 1;
 }
diff --git a/src/xine-engine/xine.c b/src/xine-engine/xine.c
index 9623668dc..a780aa4dc 100644
--- a/src/xine-engine/xine.c
+++ b/src/xine-engine/xine.c
@@ -239,8 +239,37 @@ static void ticket_revoke(xine_ticket_t *this, int atomic) {
     pthread_mutex_unlock(&this->revoke_lock);
 }
 
+static int ticket_lock_port_rewiring(xine_ticket_t *this, int ms_timeout) {
+
+  if (ms_timeout >= 0) {
+    struct timespec abstime;
+
+    struct timeval now;
+    gettimeofday(&now, 0);
+
+    abstime.tv_sec = now.tv_sec + ms_timeout / 1000;
+    abstime.tv_nsec = now.tv_usec * 1000 + (ms_timeout % 1000) * 1e6;
+
+    if (abstime.tv_nsec > 1e9) {
+      abstime.tv_nsec -= 1e9;
+      abstime.tv_sec++;
+    }
+
+    return (0 == pthread_mutex_timedlock(&this->port_rewiring_lock, &abstime));
+  }
+
+  pthread_mutex_lock(&this->port_rewiring_lock);
+  return 1;
+}
+
+static void ticket_unlock_port_rewiring(xine_ticket_t *this) {
+
+  pthread_mutex_unlock(&this->port_rewiring_lock);
+}
+
 static void ticket_dispose(xine_ticket_t *this) {
 
+  pthread_mutex_destroy(&this->port_rewiring_lock);
   pthread_mutex_destroy(&this->lock);
   pthread_mutex_destroy(&this->revoke_lock);
   pthread_cond_destroy(&this->issued);
@@ -261,10 +290,13 @@ static xine_ticket_t *ticket_init(void) {
   port_ticket->renew                = ticket_renew;
   port_ticket->issue                = ticket_issue;
   port_ticket->revoke               = ticket_revoke;
+  port_ticket->lock_port_rewiring   = ticket_lock_port_rewiring;
+  port_ticket->unlock_port_rewiring = ticket_unlock_port_rewiring;
   port_ticket->dispose              = ticket_dispose;
   
   pthread_mutex_init(&port_ticket->lock, NULL);
   pthread_mutex_init(&port_ticket->revoke_lock, NULL);
+  pthread_mutex_init(&port_ticket->port_rewiring_lock, NULL);
   pthread_cond_init(&port_ticket->issued, NULL);
   pthread_cond_init(&port_ticket->revoked, NULL);
   
@@ -458,6 +490,7 @@ static int stream_rewire_audio(xine_post_out_t *output, void *data)
   if (!data)
     return 0;
 
+  stream->xine->port_ticket->lock_port_rewiring(stream->xine->port_ticket, -1);
   stream->xine->port_ticket->revoke(stream->xine->port_ticket, 1);
   
   if (stream->audio_out->status(stream->audio_out, stream, &bits, &rate, &mode)) {
@@ -468,6 +501,7 @@ static int stream_rewire_audio(xine_post_out_t *output, void *data)
   stream->audio_out = new_port;
   
   stream->xine->port_ticket->issue(stream->xine->port_ticket, 1);
+  stream->xine->port_ticket->unlock_port_rewiring(stream->xine->port_ticket);
 
   return 1;
 }
@@ -482,6 +516,7 @@ static int stream_rewire_video(xine_post_out_t *output, void *data)
   if (!data)
     return 0;
 
+  stream->xine->port_ticket->lock_port_rewiring(stream->xine->port_ticket, -1);
   stream->xine->port_ticket->revoke(stream->xine->port_ticket, 1);
   
   if (stream->video_out->status(stream->video_out, stream, &width, &height, &img_duration)) {
@@ -492,6 +527,7 @@ static int stream_rewire_video(xine_post_out_t *output, void *data)
   stream->video_out = new_port;
   
   stream->xine->port_ticket->issue(stream->xine->port_ticket, 1);
+  stream->xine->port_ticket->unlock_port_rewiring(stream->xine->port_ticket);
 
   return 1;
 }
diff --git a/src/xine-engine/xine_internal.h b/src/xine-engine/xine_internal.h
index c88bcc904..db95d064a 100644
--- a/src/xine-engine/xine_internal.h
+++ b/src/xine-engine/xine_internal.h
@@ -168,6 +168,9 @@ struct xine_ticket_s {
    * be used in combination with acquire_nonblocking() */
   void (*release_nonblocking)(xine_ticket_t *self, int irrevocable);
 
+  int (*lock_port_rewiring)(xine_ticket_t *self, int ms_timeout);
+  void (*unlock_port_rewiring)(xine_ticket_t *self);
+
   void (*dispose)(xine_ticket_t *self);
   
   pthread_mutex_t lock;
@@ -179,6 +182,7 @@ struct xine_ticket_s {
   int             pending_revocations;
   int             atomic_revoke;
   pthread_t       atomic_revoker_thread;
+  pthread_mutex_t port_rewiring_lock;
 #endif
 };