parser: make backlog function configurable

tvheadend · Feb 3, 2016 · c8810d2 · c8810d2
1 parent 12be36f
commit c8810d2
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Showing 3 changed files with 16 additions and 5 deletions.
diff --git a/src/config.c b/src/config.c
@@ -2057,15 +2057,23 @@ const idclass_t config_class = {
       .type   = PT_U32,
       .id     = "descrambler_buffer",
       .name   = N_("Descrambler buffer (TS packets)"),
-      .desc   = N_("The number of packets Tvheadend buffers in case "
+      .desc   = N_("The number of MPEG-TS packets Tvheadend buffers in case "
                    "there is a delay receiving CA keys. "),
-                   /* Note: I'm not sure I've explained this very well
-                    * ;)
-                    */
       .off    = offsetof(config_t, descrambler_buffer),
       .opts   = PO_EXPERT,
       .group  = 1
     },
+    {
+      .type   = PT_BOOL,
+      .id     = "parser_backlog",
+      .name   = N_("Use packet backlog"),
+      .desc   = N_("Send previous stream frames to upper layers "
+                   "(before frame start is signalled in the stream). "
+                   "It may cause issues with some clients / players."),
+      .off    = offsetof(config_t, parser_backlog),
+      .opts   = PO_EXPERT,
+      .group  = 1
+    },
     {
       .type   = PT_STR,
       .islist = 1,

diff --git a/src/config.h b/src/config.h
@@ -51,6 +51,7 @@ typedef struct config {
   uint32_t cookie_expires;
   int dscp;
   uint32_t descrambler_buffer;
+  int parser_backlog;
 } config_t;
 
 extern const idclass_t config_class;

diff --git a/src/parsers/parsers.c b/src/parsers/parsers.c
@@ -36,6 +36,7 @@
 #include "bitstream.h"
 #include "packet.h"
 #include "streaming.h"
+#include "config.h"
 
 /* parser states */
 #define PARSER_APPEND 0
@@ -1341,7 +1342,8 @@ parse_h264_deliver(service_t *t, elementary_stream_t *st, th_pkt_t *pkt)
       goto deliver;
     }
   }
-  parser_backlog(t, st, pkt);
+  if (config.parser_backlog)
+    parser_backlog(t, st, pkt);
 }
 
 static int