Panda3D

pnmFileTypeTIFF.h

00001 // Filename: pnmFileTypeTIFF.h
00002 // Created by:  drose (17Jun00)
00003 //
00004 ////////////////////////////////////////////////////////////////////
00005 //
00006 // PANDA 3D SOFTWARE
00007 // Copyright (c) Carnegie Mellon University.  All rights reserved.
00008 //
00009 // All use of this software is subject to the terms of the revised BSD
00010 // license.  You should have received a copy of this license along
00011 // with this source code in a file named "LICENSE."
00012 //
00013 ////////////////////////////////////////////////////////////////////
00014 
00015 #ifndef PNMFILETYPETIFF_H
00016 #define PNMFILETYPETIFF_H
00017 
00018 #include "pandabase.h"
00019 
00020 #ifdef HAVE_TIFF
00021 
00022 #include "pnmFileType.h"
00023 #include "pnmReader.h"
00024 #include "pnmWriter.h"
00025 
00026 #include <stdarg.h>  // for va_list
00027 
00028 
00029 #define TIFF_COLORMAP_MAXCOLORS 1024
00030 
00031 ////////////////////////////////////////////////////////////////////
00032 //       Class : PNMFileTypeTIFF
00033 // Description : For reading and writing TIFF files.
00034 ////////////////////////////////////////////////////////////////////
00035 class EXPCL_PANDA_PNMIMAGETYPES PNMFileTypeTIFF : public PNMFileType {
00036 public:
00037   PNMFileTypeTIFF();
00038 
00039   virtual string get_name() const;
00040 
00041   virtual int get_num_extensions() const;
00042   virtual string get_extension(int n) const;
00043   virtual string get_suggested_extension() const;
00044 
00045   virtual bool has_magic_number() const;
00046   virtual bool matches_magic_number(const string &magic_number) const;
00047 
00048   virtual PNMReader *make_reader(istream *file, bool owns_file = true,
00049                                  const string &magic_number = string());
00050   virtual PNMWriter *make_writer(ostream *file, bool owns_file = true);
00051 
00052 public:
00053   class Reader : public PNMReader {
00054   public:
00055     Reader(PNMFileType *type, istream *file, bool owns_file, string magic_number);
00056     virtual ~Reader();
00057 
00058     virtual bool supports_read_row() const;
00059     virtual bool read_row(xel *array, xelval *alpha, int x_size, int y_size);
00060 
00061   private:
00062     xelval next_sample_lt_8(unsigned char *&buf_ptr, int &bits_left) const;
00063     xelval next_sample_8(unsigned char *&buf_ptr, int &bits_left) const;
00064     xelval next_sample_16(unsigned char *&buf_ptr, int &bits_left) const;
00065     xelval next_sample_32(unsigned char *&buf_ptr, int &bits_left) const;
00066     xelval next_sample_general(unsigned char *&buf_ptr, int &bits_left) const;
00067 
00068     unsigned short photomet;
00069     unsigned short bps, spp;
00070     unsigned short unassoc_alpha_sample, assoc_alpha_sample;
00071     xel colormap[TIFF_COLORMAP_MAXCOLORS];
00072 
00073     int current_row;
00074     struct tiff *tif;
00075   };
00076 
00077   class Writer : public PNMWriter {
00078   public:
00079     Writer(PNMFileType *type, ostream *file, bool owns_file);
00080 
00081     virtual int write_data(xel *array, xelval *alpha);
00082   };
00083 
00084 private:
00085   static void install_error_handlers();
00086 
00087   static void tiff_warning(const char *module, const char *format, va_list ap);
00088   static void tiff_error(const char *module, const char *format, va_list ap);
00089   static bool _installed_error_handlers;
00090 
00091   // The TypedWritable interface follows.
00092 public:
00093   static void register_with_read_factory();
00094 
00095 protected:
00096   static TypedWritable *make_PNMFileTypeTIFF(const FactoryParams &params);
00097 
00098 public:
00099   static TypeHandle get_class_type() {
00100     return _type_handle;
00101   }
00102   static void init_type() {
00103     PNMFileType::init_type();
00104     register_type(_type_handle, "PNMFileTypeTIFF",
00105                   PNMFileType::get_class_type());
00106   }
00107   virtual TypeHandle get_type() const {
00108     return get_class_type();
00109   }
00110   virtual TypeHandle force_init_type() {init_type(); return get_class_type();}
00111 
00112 private:
00113   static TypeHandle _type_handle;
00114 };
00115 
00116 #endif  // HAVE_TIFF
00117 
00118 #endif
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