From afb2f1bdec2cef12fe363d1ef25034e993f5e63e Mon Sep 17 00:00:00 2001
From: Klaus Schmidinger <vdr@tvdr.de>
Date: Tue, 12 Jun 2001 21:50:40 +0200
Subject: [PATCH] Improved channel switching

---
 HISTORY  |  3 ++-
 dvbapi.c | 40 +++++++++++++++++++++++++---------------
 2 files changed, 27 insertions(+), 16 deletions(-)

diff --git a/HISTORY b/HISTORY
index 8c583fac..e1497977 100644
--- a/HISTORY
+++ b/HISTORY
@@ -491,7 +491,7 @@ Video Disk Recorder Revision History
 - Updated version of Matthias Schniedermeyer's 'schnitt' tools.
 - New 'master-timer' tool (thanks to Matthias Schniedermeyer).
 
-2001-06-03: Version 0.81
+2001-06-12: Version 0.81
 
 - Fixed handling the case where the driver reports EAGAIN during recording,
   but no data comes within 5 seconds.
@@ -504,3 +504,4 @@ Video Disk Recorder Revision History
 - Now 'runvdr' checks if the driver is already loaded (thanks to Henning
   Holtschneider).
 - Fixed removing recordings with Lifetime = 99.
+- Improved channel switching.
diff --git a/dvbapi.c b/dvbapi.c
index dc71a97f..b1464423 100644
--- a/dvbapi.c
+++ b/dvbapi.c
@@ -4,7 +4,7 @@
  * See the main source file 'vdr.c' for copyright information and
  * how to reach the author.
  *
- * $Id: dvbapi.c 1.70 2001/06/09 10:32:09 kls Exp $
+ * $Id: dvbapi.c 1.71 2001/06/12 21:48:48 kls Exp $
  */
 
 #include "dvbapi.h"
@@ -2046,6 +2046,12 @@ bool cDvbApi::SetChannel(int ChannelNumber, int FrequencyMHz, char Polarization,
      CHECK(ioctl(fd_audio, AUDIO_CLEAR_BUFFER));
      }
 
+  // Turn off current PIDs:
+
+  CHECK(ioctl(fd_demuxv, DMX_STOP));
+  CHECK(ioctl(fd_demuxa, DMX_STOP));
+  CHECK(ioctl(fd_demuxt, DMX_STOP));
+
   bool ChannelSynced = false;
 
   if (fd_qpskfe >= 0 && fd_sec >= 0) { // DVB-S
@@ -2095,14 +2101,16 @@ bool cDvbApi::SetChannel(int ChannelNumber, int FrequencyMHz, char Polarization,
 
      // Wait for channel sync:
 
-     qpskEvent event;
-     int res = ioctl(fd_qpskfe, QPSK_GET_EVENT, &event);
-     if (res == -EBUFFEROVERFLOW)
-        res = ioctl(fd_qpskfe, QPSK_GET_EVENT, &event);
-     if (res >= 0)
-        ChannelSynced = event.type == FE_COMPLETION_EV;
+     if (cFile::FileReady(fd_qpskfe, 5000)) {
+        qpskEvent event;
+        int res = ioctl(fd_qpskfe, QPSK_GET_EVENT, &event);
+        if (res >= 0)
+           ChannelSynced = event.type == FE_COMPLETION_EV;
+        else
+           esyslog(LOG_ERR, "ERROR %d in qpsk get event", res);
+        }
      else
-        esyslog(LOG_ERR, "ERROR in qpsk get event");
+        fprintf(stderr, "ERROR: timeout while tuning\n");
      }
   else if (fd_qamfe >= 0) { // DVB-C
 
@@ -2120,14 +2128,16 @@ bool cDvbApi::SetChannel(int ChannelNumber, int FrequencyMHz, char Polarization,
 
      // Wait for channel sync:
 
-     qamEvent event;
-     int res = ioctl(fd_qamfe, QAM_GET_EVENT, &event);
-     if (res == -EBUFFEROVERFLOW)
-        res = ioctl(fd_qamfe, QAM_GET_EVENT, &event);
-     if (res >= 0)
-        ChannelSynced = event.type == FE_COMPLETION_EV;
+     if (cFile::FileReady(fd_qamfe, 5000)) {
+        qamEvent event;
+        int res = ioctl(fd_qamfe, QAM_GET_EVENT, &event);
+        if (res >= 0)
+           ChannelSynced = event.type == FE_COMPLETION_EV;
+        else
+           esyslog(LOG_ERR, "ERROR %d in qam get event", res);
+        }
      else
-        esyslog(LOG_ERR, "ERROR in qam get event");
+        fprintf(stderr, "ERROR: timeout while tuning\n");
      }
   else {
      esyslog(LOG_ERR, "ERROR: attempt to set channel without DVB-S or DVB-C device");