mpegts: add the AC-3 PMT 0x06 switch to the mux config

tvheadend · Sep 9, 2014 · 3240a8e · 3240a8e
1 parent bc021ad
commit 3240a8e
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Showing 4 changed files with 17 additions and 4 deletions.
diff --git a/docs/html/config_muxes.html b/docs/html/config_muxes.html
@@ -45,6 +45,11 @@
 
 		<dt>Character Set
 		<dd>The character encoding for this mux (e.g. UTF-8).
+
+		<dt>PMT Descriptor 0x06 = AC-3
+		<dd>Whether or not the empty PMT descriptor 0x06 defaults to
+		    the AC-3 stream. Some Chinese cable providers are using
+		    this. If unsure, keep this off.
 
 		<dt>Interface
 		<dd>IPTV : the network interface/card on which the IPTV source can be found.

diff --git a/src/input/mpegts.h b/src/input/mpegts.h
@@ -411,6 +411,7 @@ struct mpegts_mux
   int   mm_enabled;
   int   mm_epg;
   char *mm_charset;
+  int   mm_pmt_06_ac3;
 };
 
 /* Service */

diff --git a/src/input/mpegts/dvb_psi.c b/src/input/mpegts/dvb_psi.c
@@ -34,7 +34,7 @@
 SKEL_DECLARE(mpegts_table_state_skel, struct mpegts_table_state);
 
 static int
-psi_parse_pmt(mpegts_service_t *t, const uint8_t *ptr, int len);
+psi_parse_pmt(mpegts_mux_t *mux, mpegts_service_t *t, const uint8_t *ptr, int len);
 
 /* **************************************************************************
  * Lookup tables
@@ -695,7 +695,7 @@ dvb_pmt_callback
   tvhdebug("pmt", "sid %04X (%d)", sid, sid);
   pthread_mutex_lock(&s->s_stream_mutex);
   had_components = !!TAILQ_FIRST(&s->s_components);
-  r = psi_parse_pmt(s, ptr, len);
+  r = psi_parse_pmt(mt->mt_mux, s, ptr, len);
   pthread_mutex_unlock(&s->s_stream_mutex);
   if (r)
     service_restart((service_t*)s, had_components);
@@ -1279,7 +1279,7 @@ psi_desc_teletext(mpegts_service_t *t, const uint8_t *ptr, int size,
  */
 static int
 psi_parse_pmt
-  (mpegts_service_t *t, const uint8_t *ptr, int len)
+  (mpegts_mux_t *mux, mpegts_service_t *t, const uint8_t *ptr, int len)
 {
   int ret = 0;
   uint16_t pcr_pid, pid;
@@ -1376,7 +1376,7 @@ psi_parse_pmt
     case 0x06:
       /* 0x06 is Chinese Cable TV AC-3 audio track */
       /* but mark it so only when no more descriptors exist */
-      if (dllen > 1)
+      if (dllen > 1 || !mux || !mux->mm_pmt_06_ac3)
         break;
       /* fall through to SCT_AC3 */
     case 0x81:

diff --git a/src/input/mpegts/mpegts_mux.c b/src/input/mpegts/mpegts_mux.c
@@ -406,6 +406,13 @@ const idclass_t mpegts_mux_class =
       .opts     = PO_RDONLY | PO_NOSAVE,
       .get      = mpegts_mux_class_get_num_svc,
     },
+    {
+      .type     = PT_BOOL,
+      .id       = "pmt_06_ac3",
+      .name     = "PMT Descriptor 0x06 = AC-3",
+      .off      = offsetof(mpegts_mux_t, mm_pmt_06_ac3),
+      .opts     = PO_ADVANCED,
+    },
     {}
   }
 };