From ab622153edfd43576768e11feef6fcb5e788c52f Mon Sep 17 00:00:00 2001
From: Klaus Schmidinger <vdr@tvdr.de>
Date: Sun, 31 Aug 2003 12:41:19 +0200
Subject: Now clearing the player device if there are too many poll timeouts in
 'Transfer Mode'

---
 HISTORY    |  2 ++
 transfer.c | 12 +++++++++++-
 2 files changed, 13 insertions(+), 1 deletion(-)

diff --git a/HISTORY b/HISTORY
index 07c182c9..75bdca5a 100644
--- a/HISTORY
+++ b/HISTORY
@@ -2346,3 +2346,5 @@ Video Disk Recorder Revision History
   menus with the DVD plugin.
 - Fixed handling extra blanks in plugin command lines.
 - Actually implemented the SVDRP command DELC.
+- Now clearing the player device if there are too many poll timeouts in 'Transfer
+  Mode', which avoids buffer overflows and black screens in such cases.
diff --git a/transfer.c b/transfer.c
index 12512c33..3e24dccd 100644
--- a/transfer.c
+++ b/transfer.c
@@ -4,7 +4,7 @@
  * See the main source file 'vdr.c' for copyright information and
  * how to reach the author.
  *
- * $Id: transfer.c 1.13 2003/05/18 15:15:00 kls Exp $
+ * $Id: transfer.c 1.14 2003/08/31 12:19:16 kls Exp $
  */
 
 #include "transfer.h"
@@ -13,6 +13,7 @@
 // The size of the array used to buffer video data:
 // (must be larger than MINVIDEODATA - see remux.h)
 #define VIDEOBUFSIZE  MEGABYTE(1)
+#define POLLTIMEOUTS_BEFORE_DEVICECLEAR 3
 
 // --- cTransfer -------------------------------------------------------------
 
@@ -67,6 +68,7 @@ void cTransfer::Action(void)
 {
   dsyslog("transfer thread started (pid=%d)", getpid());
 
+  int PollTimeouts = 0;
   active = true;
   while (active) {
 
@@ -99,6 +101,7 @@ void cTransfer::Action(void)
               while (Result > 0 && active) {
                     cPoller Poller;
                     if (DevicePoll(Poller, 100)) {
+                       PollTimeouts = 0;
                        int w = PlayVideo(p, Result);
                        if (w > 0) {
                           p += w;
@@ -109,6 +112,13 @@ void cTransfer::Action(void)
                           break;
                           }
                        }
+                    else {
+                       PollTimeouts++;
+                       if (PollTimeouts == POLLTIMEOUTS_BEFORE_DEVICECLEAR) {
+                          dsyslog("clearing device because of consecutive poll timeouts");
+                          DeviceClear();
+                          }
+                       }
                     }
               }
            }
-- 
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