Copy the KDE 3.5 branch to branches/trinity for new KDE 3.5 features.

BUG:215923


git-svn-id: svn://anonsvn.kde.org/home/kde/branches/trinity/kdemultimedia@1054174 283d02a7-25f6-0310-bc7c-ecb5cbfe19da

1 files changed, 93 insertions, 0 deletions

diff --git a/mpeglib/lib/mpegplay/mpegVideoLength.h b/mpeglib/lib/mpegplay/mpegVideoLength.h
new file mode 100644
index 00000000..79bece6a
--- /dev/null
+++ b/mpeglib/lib/mpegplay/mpegVideoLength.h
@@ -0,0 +1,93 @@
+/*
+  mpg I video/audio player plugin
+  Copyright (C) 1999  Martin Vogt
+
+  This program is free software; you can redistribute it and/or modify
+  it under the terms of the GNU Library General Public License as published by
+  the Free Software Foundation.
+
+  For more information look at the file COPYRIGHT in this package
+
+ */
+
+
+#ifndef __MPEGVIDEOLENGTH_H
+#define __MPEGVIDEOLENGTH_H
+
+#include "../input/inputPlugin.h"
+
+
+
+
+
+
+/**
+   This class calculates the length (in seconds) of an mpeg stream.
+   I do not know how to make it right, my approach
+   seeks at the beginning of the stream for the timecode in
+   the picture gop then jumps near the end and does the same.
+   then it substracts the values.
+   It has some limitations, it does not seek higher than 600 MB,
+   because it seems the kernel has some problems with this.
+   (It resets the scsi system, and sometimes hang/crash)
+   Thus it only seek near 600 and assumes linear relation
+   for the rest. (Means: it calculates the length of the rest
+   with the sec/mb value calculates from the 600 mb
+   should be exact enough.
+*/
+
+class MpegVideoStream;
+class MpegVideoHeader;
+class MpegSystemStream;
+class MpegSystemHeader;
+class GOP;
+
+class MpegVideoLength {
+
+  // these are used fo non system streams
+  MpegVideoHeader*     mpegVideoHeader;
+  MpegVideoStream*     mpegVideoStream;
+
+  // these for system streams
+  MpegSystemHeader*    mpegSystemHeader;
+  MpegSystemStream*    mpegSystemStream;
+
+  
+  InputStream* input;
+  GOP* startGOP;
+  GOP* endGOP;
+  GOP* lengthGOP;
+
+
+  int lHasStart;
+  int lHasEnd;
+  int lCanSeek;
+  int lHasStream;
+  int lHasSystemStream;
+  int lHasRawStream;
+  int lHasResync;
+  int lSysLayer;
+  long upperEnd;
+  long realLength;
+
+ public:
+  MpegVideoLength(InputStream* input);
+  ~MpegVideoLength();
+
+  int firstInitialize();
+
+  long getLength();
+  long getSeekPos(int seconds);
+
+
+ private:
+  int seekToStart();
+  int seekToEnd();
+  int seekValue(unsigned int code,long& endPos);
+  int parseToGOP(GOP* gop);
+  int parseToPTS(GOP* gop);
+  
+
+};
+#endif
+