From fd0d9931dd58aa967c4c7f951105191cacc43bae Mon Sep 17 00:00:00 2001
From: Jaroslav Kysela <perex@perex.cz>
Date: Fri, 27 Jun 2014 23:40:40 +0200
Subject: [PATCH] epg: do not subscribe to muxes without any active (assigned)
 channels

---
 src/epggrab/otamux.c          |  6 +++---
 src/input/mpegts.h            |  1 +
 src/input/mpegts/mpegts_mux.c | 15 +++++++++++++++
 3 files changed, 19 insertions(+), 3 deletions(-)

diff --git a/src/epggrab/otamux.c b/src/epggrab/otamux.c
index 5ffb4bd2..de3e59b6 100644
--- a/src/epggrab/otamux.c
+++ b/src/epggrab/otamux.c
@@ -124,9 +124,8 @@ epggrab_ota_done ( epggrab_ota_mux_t *ota, int timeout )
     epggrab_ota_pending_timer_cb(NULL);
   
   /* Remove from active */
-  if (!timeout) {
+  if (!timeout)
     epggrab_ota_active_timer_cb(NULL);
-  }
 }
 
 static void
@@ -339,7 +338,8 @@ next_one:
   }
 
   /* Subscribe to the mux */
-  if (mpegts_mux_subscribe(mm, "epggrab", SUBSCRIPTION_PRIO_EPG)) {
+  if (mm->mm_is_epg(mm) <= 0 ||
+      mpegts_mux_subscribe(mm, "epggrab", SUBSCRIPTION_PRIO_EPG)) {
     om->om_active = 0;
     om->om_when   = dispatch_clock + epggrab_ota_period(om, 4) + extra;
     LIST_INSERT_SORTED(&epggrab_ota_pending, om, om_q_link, om_time_cmp);
diff --git a/src/input/mpegts.h b/src/input/mpegts.h
index e6542fa1..23b0b3d7 100644
--- a/src/input/mpegts.h
+++ b/src/input/mpegts.h
@@ -377,6 +377,7 @@ struct mpegts_mux
   void (*mm_open_table)       (mpegts_mux_t*,mpegts_table_t*,int subscribe);
   void (*mm_close_table)      (mpegts_mux_t*,mpegts_table_t*);
   void (*mm_create_instances) (mpegts_mux_t*);
+  int  (*mm_is_epg)           (mpegts_mux_t*);
 
   /*
    * Configuration
diff --git a/src/input/mpegts/mpegts_mux.c b/src/input/mpegts/mpegts_mux.c
index 084e5eee..ad956b73 100644
--- a/src/input/mpegts/mpegts_mux.c
+++ b/src/input/mpegts/mpegts_mux.c
@@ -439,6 +439,20 @@ mpegts_mux_is_enabled ( mpegts_mux_t *mm )
   return mm->mm_enabled;
 }
 
+static int
+mpegts_mux_is_epg ( mpegts_mux_t *mm )
+{
+  mpegts_service_t *s;
+
+  lock_assert(&global_lock);
+
+  LIST_FOREACH(s, &mm->mm_services, s_dvb_mux_link)
+    if (LIST_FIRST(&s->s_channels))
+      break;
+
+  return s ? 1 : 0;
+}
+
 static void
 mpegts_mux_create_instances ( mpegts_mux_t *mm )
 {
@@ -833,6 +847,7 @@ mpegts_mux_create0
   mm->mm_display_name        = mpegts_mux_display_name;
   mm->mm_config_save         = mpegts_mux_config_save;
   mm->mm_is_enabled          = mpegts_mux_is_enabled;
+  mm->mm_is_epg              = mpegts_mux_is_epg;
 
   /* Start/stop */
   mm->mm_start               = mpegts_mux_start;