From 927ebf2f0fc45d51ec162c26fab17b298d3ea6ac Mon Sep 17 00:00:00 2001
From: Jaroslav Kysela <perex@perex.cz>
Date: Wed, 28 Jan 2015 14:56:21 +0100
Subject: [PATCH] dvb psi: add another AC-3 detection hack, fixes #2647

---
 src/input/mpegts.h            |  9 ++++++++-
 src/input/mpegts/dvb_psi.c    |  4 ++--
 src/input/mpegts/mpegts_mux.c | 20 ++++++++++++++++----
 3 files changed, 26 insertions(+), 7 deletions(-)

diff --git a/src/input/mpegts.h b/src/input/mpegts.h
index 61ab829f..a085c6e6 100644
--- a/src/input/mpegts.h
+++ b/src/input/mpegts.h
@@ -331,6 +331,13 @@ enum mpegts_mux_epg_flag
 };
 #define MM_EPG_LAST MM_EPG_ONLY_OPENTV_SKY_AUSAT
 
+enum mpegts_mux_ac3_flag
+{
+  MM_AC3_STANDARD,
+  MM_AC3_PMT_06,
+  MM_AC3_PMT_N05,
+};
+
 typedef struct tsdebug_packet {
   TAILQ_ENTRY(tsdebug_packet) link;
   uint8_t pkt[188];
@@ -428,7 +435,7 @@ struct mpegts_mux
   int   mm_enabled;
   int   mm_epg;
   char *mm_charset;
-  int   mm_pmt_06_ac3;
+  int   mm_pmt_ac3;
 
   /*
    * TSDEBUG
diff --git a/src/input/mpegts/dvb_psi.c b/src/input/mpegts/dvb_psi.c
index 4b554fdc..6e22e70f 100644
--- a/src/input/mpegts/dvb_psi.c
+++ b/src/input/mpegts/dvb_psi.c
@@ -2294,7 +2294,7 @@ 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 || !mux || !mux->mm_pmt_06_ac3)
+      if (dllen > 1 || !mux || mux->mm_pmt_ac3 != MM_AC3_PMT_06)
         break;
       /* fall through to SCT_AC3 */
     case 0x81:
@@ -2336,7 +2336,7 @@ psi_parse_pmt
         break;
 
       case DVB_DESC_REGISTRATION:
-        if(dlen == 4 && 
+        if(mux->mm_pmt_ac3 != MM_AC3_PMT_N05 && dlen == 4 &&
            ptr[0] == 'A' && ptr[1] == 'C' && ptr[2] == '-' &&  ptr[3] == '3')
           hts_stream_type = SCT_AC3;
         /* seen also these formats: */
diff --git a/src/input/mpegts/mpegts_mux.c b/src/input/mpegts/mpegts_mux.c
index d2f9cc72..f2aaa4cf 100644
--- a/src/input/mpegts/mpegts_mux.c
+++ b/src/input/mpegts/mpegts_mux.c
@@ -447,6 +447,17 @@ mpegts_mux_epg_list ( void *o )
   return strtab2htsmsg(tab);
 }
 
+static htsmsg_t *
+mpegts_mux_ac3_list ( void *o )
+{
+  static const struct strtab tab[] = {
+    { "Standard",                 MM_AC3_STANDARD },
+    { "AC-3 = descriptor 6",      MM_AC3_PMT_06 },
+    { "Ignore descriptor 5",      MM_AC3_PMT_N05 },
+  };
+  return strtab2htsmsg(tab);
+}
+
 const idclass_t mpegts_mux_class =
 {
   .ic_class      = "mpegts_mux",
@@ -548,11 +559,12 @@ const idclass_t mpegts_mux_class =
       .get      = mpegts_mux_class_get_num_chn,
     },
     {
-      .type     = PT_BOOL,
+      .type     = PT_INT,
       .id       = "pmt_06_ac3",
-      .name     = "PMT Descriptor 0x06 = AC-3",
-      .off      = offsetof(mpegts_mux_t, mm_pmt_06_ac3),
-      .opts     = PO_ADVANCED,
+      .name     = "AC-3 Detection",
+      .off      = offsetof(mpegts_mux_t, mm_pmt_ac3),
+      .def.i    = MM_EPG_ENABLE,
+      .list     = mpegts_mux_ac3_list,
     },
     {}
   }