1 files changed, 124 insertions, 0 deletions
diff --git a/mpeglib/lib/util/render/dither2YUV/dither2YUV.cpp b/mpeglib/lib/util/render/dither2YUV/dither2YUV.cpp
new file mode 100644
index 00000000..db4a3288
--- /dev/null
+++ b/mpeglib/lib/util/render/dither2YUV/dither2YUV.cpp
@@ -0,0 +1,124 @@
+/*
+  this class dithery RGB picture to yuv12
+  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 "dither2YUV.h"
+
+#include <iostream>
+
+using namespace std;
+
+
+Dither2YUV::Dither2YUV() {
+
+
+  lmmx=mm_support();
+
+}
+
+
+Dither2YUV::~Dither2YUV(){
+}
+
+
+
+
+
+
+void Dither2YUV::doDither(YUVPicture* pic,int depth,int ditherSize,
+			  unsigned char* dest,int offset) {
+  
+  int inputType=pic->getImageType();
+
+  switch(inputType) {
+  case PICTURE_RGB:
+    doDitherRGB_NORMAL(pic,depth,ditherSize,dest,offset);
+    break;
+  default:
+    std::cout << "unknown RGB type:"<<inputType<<" in Dither2YUV"<<std::endl;
+    exit(0);
+  }
+}
+
+
+void Dither2YUV::doDitherRGB_NORMAL(YUVPicture* rgbPic,
+				    int depth,int ditherSize,
+				    unsigned char* dest,int offset) {
+ 
+  switch (ditherSize) {
+  case _SIZE_NORMAL: 
+    doDither2YUV_std(rgbPic,depth,dest,offset);
+    break;
+  case _SIZE_DOUBLE:
+    std::cout << "double not supported for RGB"<<std::endl;
+    break;
+  default:
+    std::cout << "unknown size:"<<ditherSize<<" in Dither2YUV"<<std::endl;
+    exit(0);
+  }
+}
+
+
+void Dither2YUV::doDither2YUV_std(YUVPicture* rgbPic,int depth,
+				  unsigned char* dest,int offset){
+  
+  int h=rgbPic->getHeight();
+  int w=rgbPic->getWidth();
+  int lumLength=w * h;
+  int colorLength=(w * h) / 4;
+
+  unsigned char* lum=dest;
+  unsigned char* cr=lum+lumLength;
+  unsigned char* cb=cr+colorLength;
+  unsigned char* rgbSource=rgbPic->getImagePtr();
+
+
+  switch (depth) {
+  case 8:
+    std::cout << "8 bit dither to yuv not supported"<<std::endl;
+    exit(0);
+    break;
+  case 16:
+    if (lmmx) {
+#ifdef INTEL
+      rgb2yuv16bit_mmx(rgbSource,lum,cr,cb,h,w);
+#endif
+    } else {
+      rgb2yuv16bit(rgbSource,lum,cr,cb,h,w);
+    }
+
+    break;
+  case 24:
+    if (lmmx) {
+#ifdef INTEL
+      rgb2yuv24bit_mmx(rgbSource,lum,cr,cb,h,w);
+#endif
+    } else {
+      rgb2yuv24bit(rgbSource,lum,cr,cb,h,w);
+    }
+    break;
+  case 32:
+    if (lmmx) {
+#ifdef INTEL
+      rgb2yuv32bit_mmx(rgbSource,lum,cr,cb,h,w);
+#endif
+    } else {
+      rgb2yuv32bit(rgbSource,lum,cr,cb,h,w);
+    }     
+    break;
+  default:
+    std::cout << "cannot dither depth:"<<depth<<std::endl;
+  }
+
+}
+  
+