Added a poll to cDvbDevice::PlayVideo() and cDvbDevice::PlayAudio() to avoid excessive CPU load

HISTORY

@@ -5849,10 +5849,13 @@ Video Disk Recorder Revision History
   the patch from ftp://ftp.cadsoft.de/vdr/Developer/av7110_v4ldvb_api5_audiobuf_test_1.diff
   to the driver (thanks to Oliver Endriss).
 
-2008-12-22: Version 1.7.3
+2008-12-28: Version 1.7.3
 
 - Updated the Russian OSD texts (thanks to Oleg Roitburd).
 - Fixed handling the 'pointer field' in generating and parsing PAT/PMT (thanks to
   Frank Schmirler).
 - Fixed handling modulation types for DVB-S transponders when processing the NIT.
 - Changed cDvbDevice::GrabImage() to use V4L2 (thanks to Marco Schl<68><6C>ler).
+- Added a poll to cDvbDevice::PlayVideo() and cDvbDevice::PlayAudio() to avoid
+  excessive CPU load (this is just a makeshift solution until the FF DVB cards
+  can play TS directly).

dvbdevice.c

@@ -4,7 +4,7 @@
  * See the main source file 'vdr.c' for copyright information and
  * how to reach the author.
  *
- * $Id: dvbdevice.c 2.7 2008/12/22 10:24:10 kls Exp $
+ * $Id: dvbdevice.c 2.8 2008/12/28 10:59:51 kls Exp $
  */
 
 #include "dvbdevice.h"
@@ -1303,6 +1303,10 @@ int cDvbDevice::PlayVideo(const uchar *Data, int Length)
   int w;
   do {
      w = WriteAllOrNothing(fd_video, Data, Length, 1000, 10);
+     if (w < 0 && errno == EAGAIN) {
+        cPoller Poller(fd_video, true);
+        Poller.Poll(200);
+        }
      } while (w != Length);
   return w;
 }
@@ -1312,6 +1316,10 @@ int cDvbDevice::PlayAudio(const uchar *Data, int Length, uchar Id)
   int w;
   do {
      w = WriteAllOrNothing(fd_audio, Data, Length, 1000, 10);
+     if (w < 0 && errno == EAGAIN) {
+        cPoller Poller(fd_audio, true);
+        Poller.Poll(200);
+        }
      } while (w != Length);
   return w;
 }