1 files changed, 82 insertions, 0 deletions
diff --git a/mpeglib/lib/util/render/dither/ditherRGB_flipped.cpp b/mpeglib/lib/util/render/dither/ditherRGB_flipped.cpp
new file mode 100644
index 00000000..ba177675
--- /dev/null
+++ b/mpeglib/lib/util/render/dither/ditherRGB_flipped.cpp
@@ -0,0 +1,82 @@
+/*
+  flips RGB images
+  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
+
+ */
+
+
+#include "ditherRGB_flipped.h"
+
+#include <iostream>
+
+using namespace std;
+
+
+DitherRGB_flipped::DitherRGB_flipped() {
+  flipSpace=NULL;
+  flipSize=0;
+}
+
+DitherRGB_flipped::~DitherRGB_flipped() {
+  if (flipSpace != NULL) {
+    delete flipSpace;
+  }
+}
+
+
+
+
+void DitherRGB_flipped::flipRGBImage(unsigned char* dest,unsigned char* src,
+				     int depth,int width,int height,int ) {
+
+  int byteDepth;
+
+  switch(depth) {
+  case 8:
+    byteDepth=1;
+    break;
+  case 15:
+  case 16:
+    byteDepth=2;
+    break;
+  case 24:
+  case 32:
+    byteDepth=4;
+    break;
+  default:
+    cout << "unknown byteDepth:"<<depth
+         << " in DitherRGB_flipped::flipRGBImage"<<endl;
+    return;
+  }
+    
+
+  int spaceNeeded=width*height*byteDepth;
+
+  if (spaceNeeded > flipSize) {
+    if (flipSpace != NULL) {
+      delete flipSpace;
+    }
+    cout << "flipSpace:"<<spaceNeeded<<endl;
+    flipSpace=new unsigned char[spaceNeeded+64];
+    flipSize=spaceNeeded;
+  }
+
+  int i;
+  int lineSize=width*byteDepth;
+  unsigned char* end=dest+lineSize*(height-1);
+
+  for (i=0;i<height;i++) {
+    memcpy(end,src,lineSize);
+    src+=lineSize;
+    end-=lineSize;
+  }
+
+}
+
+