From 73870fc90706ced04a25f19ee72595eb3a9e4d2b Mon Sep 17 00:00:00 2001
From: Klaus Schmidinger <vdr@tvdr.de>
Date: Sun, 19 Aug 2001 14:37:17 +0200
Subject: [PATCH] Fixed broken recordings after a driver buffer overflow

---
 HISTORY  |  3 ++-
 dvbapi.c | 18 +++++++++++++-----
 remux.c  | 21 +++++++++++++++++++--
 3 files changed, 34 insertions(+), 8 deletions(-)

diff --git a/HISTORY b/HISTORY
index 7b51aa9f..e0c815a2 100644
--- a/HISTORY
+++ b/HISTORY
@@ -650,7 +650,7 @@ Video Disk Recorder Revision History
   only once.
 - Made I/O more robust by handling EINTR (thanks to Werner Fink).
 
-2001-08-17: Version 0.92
+2001-08-18: Version 0.92
 
 - The "channel not sync'ed" log message now also lists the card number.
 - Now using the EIT services from 'libdtv' (thanks to Rolf Hakenes), which
@@ -660,3 +660,4 @@ Video Disk Recorder Revision History
   bugs are fixed can be controlled with the EPGBugfixLevel parameter in the
   "Setup" menu (see MANUAL for details, and cEventInfo::FixEpgBugs() in eit.c
   for the actual implementation).
+- Fixed broken recordings after a driver buffer overflow.
diff --git a/dvbapi.c b/dvbapi.c
index a7565fed..e83d9d1c 100644
--- a/dvbapi.c
+++ b/dvbapi.c
@@ -7,7 +7,7 @@
  * DVD support initially written by Andreas Schultz <aschultz@warp10.net>
  * based on dvdplayer-0.5 by Matjaz Thaler <matjaz.thaler@guest.arnes.si>
  *
- * $Id: dvbapi.c 1.107 2001/08/15 09:07:19 kls Exp $
+ * $Id: dvbapi.c 1.108 2001/08/19 14:36:38 kls Exp $
  */
 
 //#define DVDDEBUG        1
@@ -545,9 +545,13 @@ void cRecordBuffer::Input(void)
          }
       else if (r < 0) {
          if (FATALERRNO) {
-            LOG_ERROR;
-            if (errno != EBUFFEROVERFLOW)
+            if (errno == EBUFFEROVERFLOW) { // this error code is not defined in the library
+               esyslog(LOG_ERR, "ERROR (%s,%d): DVB driver buffer overflow", __FILE__, __LINE__);
+               }
+            else {
+               LOG_ERROR;
                break;
+               }
             }
          }
       if (time(NULL) - t > MAXBROKENTIMEOUT) {
@@ -2075,9 +2079,13 @@ void cTransferBuffer::Input(void)
            }
         else if (r < 0) {
            if (FATALERRNO) {
-              LOG_ERROR;
-              if (errno != EBUFFEROVERFLOW)
+              if (errno == EBUFFEROVERFLOW) { // this error code is not defined in the library
+                 esyslog(LOG_ERR, "ERROR (%s,%d): DVB driver buffer overflow", __FILE__, __LINE__);
+                 }
+              else {
+                 LOG_ERROR;
                  break;
+                 }
               }
            }
         }
diff --git a/remux.c b/remux.c
index 3c7ec6e6..f89b897b 100644
--- a/remux.c
+++ b/remux.c
@@ -8,7 +8,7 @@
  * the Linux DVB driver's 'tuxplayer' example and were rewritten to suit
  * VDR's needs.
  *
- * $Id: remux.c 1.5 2001/06/24 16:37:23 kls Exp $
+ * $Id: remux.c 1.6 2001/08/19 11:52:05 kls Exp $
  */
 
 /* The calling interface of the 'cRemux::Process()' function is defined
@@ -489,6 +489,8 @@ void cRemux::SetAudioPid(int APid)
   resultCount = resultDelivered = 0;
 }
 
+#define TS_SYNC_BYTE 0x47
+
 const uchar *cRemux::Process(const uchar *Data, int &Count, int &Result, uchar *PictureType)
 {
   uchar dummyPictureType;
@@ -511,12 +513,27 @@ XXX*/
      resultDelivered = 0;
      }
 
+  int used = 0;
+
+  // Make sure we are looking at a TS packet:
+
+  while (Count > TS_SIZE) {
+        if (Data[0] == TS_SYNC_BYTE && Data[TS_SIZE] == TS_SYNC_BYTE)
+           break;
+        Data++;
+        Count--;
+        used++;
+        }
+  if (used)
+     esyslog(LOG_ERR, "ERROR: skipped %d byte to sync on TS packet", used);
+
   // Convert incoming TS data into multiplexed PES:
 
-  int used = 0;
   for (int i = 0; i < Count; i += TS_SIZE) {
       if (Count - i < TS_SIZE)
          break;
+      if (Data[i] != TS_SYNC_BYTE)
+         break;
       int pid = GetPid(Data + i + 1);
       if (Data[i + 3] & 0x10) { // got payload
          if      (pid == vPid)              vTS2PES->ts_to_pes(Data + i);