yuvcm.h

00001 
00002 /**************************************************************************
00003  *  yuvcm.h - YUV colormap
00004  *
00005  *  Created: Sat Mar 29 12:45:29 2008
00006  *  Copyright  2005-2008  Tim Niemueller  [www.niemueller.de]
00007  *
00008  ***************************************************************************/
00009 
00010 /*  This program is free software; you can redistribute it and/or modify
00011  *  it under the terms of the GNU General Public License as published by
00012  *  the Free Software Foundation; either version 2 of the License, or
00013  *  (at your option) any later version. A runtime exception applies to
00014  *  this software (see LICENSE.GPL_WRE file mentioned below for details).
00015  *
00016  *  This program is distributed in the hope that it will be useful,
00017  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
00018  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
00019  *  GNU Library General Public License for more details.
00020  *
00021  *  Read the full text in the LICENSE.GPL_WRE file in the doc directory.
00022  */
00023 
00024 #ifndef __FIREVISION_FVUTILS_COLORMAP_YUVCM_H_
00025 #define __FIREVISION_FVUTILS_COLORMAP_YUVCM_H_
00026 
00027 #include <fvutils/colormap/colormap.h>
00028 
00029 #include <sys/types.h>
00030 #include <fvutils/base/types.h>
00031 
00032 namespace firevision {
00033 #if 0 /* just to make Emacs auto-indent happy */
00034 }
00035 #endif
00036 
00037 class SharedMemoryLookupTable;
00038 
00039 class YuvColormap : public Colormap
00040 {
00041  public:
00042   YuvColormap(unsigned int depth = 1, unsigned int width = 256, unsigned int height = 256);
00043   YuvColormap(const char *shmem_lut_id, unsigned int depth = 1, unsigned int width = 256, unsigned int height = 256);
00044   YuvColormap(const char *shmem_lut_id, bool destroy_on_free, unsigned int depth = 1, unsigned int width = 256, unsigned int height = 256);
00045   YuvColormap(YuvColormap *cm, const char *shmem_lut_id, bool destroy_on_free = false);
00046   virtual ~YuvColormap();
00047 
00048   virtual color_t          determine(unsigned int y, unsigned int u, unsigned int v) const;
00049   virtual void             set(unsigned int y, unsigned int u, unsigned int v, color_t c);
00050 
00051   virtual void             reset();
00052   virtual void             set(unsigned char *buffer);
00053 
00054   virtual size_t           size();
00055 
00056   virtual unsigned char *  get_buffer() const;
00057 
00058   virtual Colormap &  operator+=(const Colormap & cmlt);
00059   virtual Colormap &  operator+=(const char *filename);
00060   virtual Colormap &  operator=(const YuvColormap &yuvcm);
00061 
00062   virtual unsigned int     width() const;
00063   virtual unsigned int     height() const;
00064   virtual unsigned int     depth() const;
00065   virtual unsigned int     deepness() const;
00066   unsigned int             plane_size() const;
00067 
00068   virtual std::list<ColormapFileBlock *>  get_blocks();
00069 
00070   void copy_uvplane(unsigned char *uvplane, unsigned int level);
00071 
00072  private:
00073   void constructor(unsigned int depth, unsigned int width, unsigned int height,
00074                    const char *shmem_lut_id = 0, bool destroy_on_free = false);
00075 
00076 
00077   SharedMemoryLookupTable *__shm_lut;
00078   unsigned char *__lut;
00079   size_t         __lut_size;
00080 
00081   unsigned int __width;
00082   unsigned int __height;
00083   unsigned int __depth;
00084   unsigned int __depth_div;
00085   unsigned int __width_div;
00086   unsigned int __height_div;
00087   unsigned int __plane_size;
00088 };
00089 
00090 
00091 inline color_t
00092 YuvColormap::determine(unsigned int y, unsigned int u, unsigned int v) const
00093 {
00094   return (color_t) *(__lut + (y / __depth_div) * __plane_size + (v / __height_div) * __width + (u / __width_div));
00095 }
00096 
00097 } // end namespace firevision
00098 
00099 #endif

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