From e2de64d6f1beb9e492daf5b886e19933c1fa41dd Mon Sep 17 00:00:00 2001
From: toma <toma@283d02a7-25f6-0310-bc7c-ecb5cbfe19da>
Date: Wed, 25 Nov 2009 17:56:58 +0000
Subject: 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
---
 mpeglib/lib/mpegplay/mpegVideoBitWindow.h | 108 ++++++++++++++++++++++++++++++
 1 file changed, 108 insertions(+)
 create mode 100644 mpeglib/lib/mpegplay/mpegVideoBitWindow.h

(limited to 'mpeglib/lib/mpegplay/mpegVideoBitWindow.h')

diff --git a/mpeglib/lib/mpegplay/mpegVideoBitWindow.h b/mpeglib/lib/mpegplay/mpegVideoBitWindow.h
new file mode 100644
index 00000000..46abe44e
--- /dev/null
+++ b/mpeglib/lib/mpegplay/mpegVideoBitWindow.h
@@ -0,0 +1,108 @@
+/*
+  bitwindow mpeg video
+  Copyright (C) 2000  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 __MPEGVIDEOBITWINDOW_H
+#define __MPEGVIDEOBITWINDOW_H
+
+#include "../input/inputPlugin.h"
+
+
+#define ISO_11172_END_CODE          ((unsigned int)0x000001b9)
+
+class MpegVideoBitWindow {
+  int size;                             /* size of buffer */
+  unsigned int bit_offset;              /* Bit offset in stream.      */
+  unsigned int *buffer;                 /* Pointer to next byte in buffer */
+  int buf_length;                       /* Length of remaining buffer.*/
+  unsigned int *buf_start;              /* Pointer to buffer start.   */
+  int max_buf_length;                   /* Max length of buffer.      */
+  unsigned int num_left;                /* from ReadPacket - leftover */
+  unsigned int leftover_bytes;          /* from ReadPacket - leftover */
+  unsigned int curBits;                 /* current bits               */
+  
+
+  unsigned int nBitMask[33];
+
+
+ public:
+  MpegVideoBitWindow();
+  ~MpegVideoBitWindow();
+  
+  int appendToBuffer(unsigned char* ptr,int len);
+  int getLinearFree();
+  // true if feof() is true and the buffer is emtpy
+  int isEof();
+  void flushByteOffset();
+  void appendToBuffer(unsigned int startCode);
+
+  
+  inline void updateCurBits() {
+    curBits = *buffer << bit_offset;
+  }
+
+  inline unsigned int showBits(int bits) {
+    
+    unsigned int mask=nBitMask[bits];
+    int shift=32-(bits);
+    int bO;                                                               
+    shift=(curBits & mask)>>shift;
+    bO = bit_offset + bits;                                    
+    if (bO > 32) {
+      return (shift | (*(buffer+1)>>(64-bO)));
+    }                                                                     
+    return shift;    
+  }
+
+  inline unsigned int showBits32() {
+    if (bit_offset) {                                         
+      return (curBits | (*(buffer+1) >> (32 - bit_offset)));   
+    }                                                                     
+    return curBits;  
+  }
+
+  inline void flushBitsDirect(unsigned int bits) {
+    bit_offset += bits;       
+    if (bit_offset & 0x20) {                                
+      bit_offset -= 32;
+      bit_offset &= 0x1f;
+      buffer++;                                             
+      updateCurBits();
+      buf_length--;                                         
+    }                                                                   
+    else {                                                              
+      curBits <<= bits;                                      
+    }    
+  }
+ 
+  inline unsigned int getBits(int bits) {
+    unsigned int result=showBits(bits);
+    flushBitsDirect(bits);
+    return result;
+  }
+  
+  void clear();
+  int getLength();
+
+  int hasBytes(int bytes);
+
+  void printChar(int bytes);
+  void printInt(int bytes);
+  void print();
+  void resizeBuffer(int insertBytes);
+  void fillWithIsoEndCode(int bytes);
+
+
+
+};
+#endif
-- 
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