From db98fbe37f2f7175ff03b8d582e940518ddf3642 Mon Sep 17 00:00:00 2001
From: Joakim Plate <elupus@ecce.se>
Date: Sun, 18 Sep 2011 19:17:23 +0200
Subject: [PATCH 06/13] Don't reparse PMT unless it's version has changed

Patch part of the XBMC patch set for ffmpeg, downloaded from
https://github.com/xbmc/FFmpeg/.

Signed-off-by: Bernd Kuhls <bernd.kuhls@t-online.de>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
---
 libavformat/mpegts.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/libavformat/mpegts.c b/libavformat/mpegts.c
index 9f85aed..25007a6 100644
--- a/libavformat/mpegts.c
+++ b/libavformat/mpegts.c
@@ -88,6 +88,7 @@ struct MpegTSFilter {
     int es_id;
     int last_cc; /* last cc code (-1 if first packet) */
     int64_t last_pcr;
+    int last_version; /* last version of data on this pid */
     enum MpegTSFilterType type;
     union {
         MpegTSPESFilter pes_filter;
@@ -450,6 +451,7 @@ static MpegTSFilter *mpegts_open_filter(MpegTSContext *ts, unsigned int pid,
     filter->es_id   = -1;
     filter->last_cc = -1;
     filter->last_pcr= -1;
+    filter->last_version = -1;
 
     return filter;
 }
@@ -1972,6 +1974,10 @@ static void pat_cb(MpegTSFilter *filter, const uint8_t *section, int section_len
         return;
     if (!h->current)
         return;
+    if (h->version == filter->last_version)
+        return;
+    filter->last_version = h->version;
+    av_dlog(ts->stream, "version=%d\n", filter->last_version);
 
     ts->stream->ts_id = h->id;
 
-- 
2.1.0