Panda3D
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00001 // Filename: pnmFileTypePNM.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 PNMFILETYPEPNM_H 00016 #define PNMFILETYPEPNM_H 00017 00018 #include "pandabase.h" 00019 00020 #ifdef HAVE_PNM 00021 00022 #include "pnmFileType.h" 00023 #include "pnmReader.h" 00024 #include "pnmWriter.h" 00025 00026 //////////////////////////////////////////////////////////////////// 00027 // Class : PNMFileTypePNM 00028 // Description : For reading and writing basic PNM files--*.pbm, 00029 // *.ppm, *.pnm. 00030 //////////////////////////////////////////////////////////////////// 00031 class EXPCL_PANDA_PNMIMAGETYPES PNMFileTypePNM : public PNMFileType { 00032 public: 00033 PNMFileTypePNM(); 00034 00035 virtual string get_name() const; 00036 00037 virtual int get_num_extensions() const; 00038 virtual string get_extension(int n) const; 00039 virtual string get_suggested_extension() const; 00040 00041 virtual bool has_magic_number() const; 00042 virtual bool matches_magic_number(const string &magic_number) const; 00043 00044 virtual PNMReader *make_reader(istream *file, bool owns_file = true, 00045 const string &magic_number = string()); 00046 virtual PNMWriter *make_writer(ostream *file, bool owns_file = true); 00047 00048 public: 00049 class Reader : public PNMReader { 00050 public: 00051 Reader(PNMFileType *type, istream *file, bool owns_file, string magic_number); 00052 00053 virtual bool supports_read_row() const; 00054 virtual bool read_row(xel *array, xelval *alpha, int x_size, int y_size); 00055 00056 private: 00057 int _ftype; 00058 }; 00059 00060 class Writer : public PNMWriter { 00061 public: 00062 Writer(PNMFileType *type, ostream *file, bool owns_file); 00063 00064 virtual bool supports_write_row() const; 00065 virtual bool write_header(); 00066 virtual bool write_row(xel *array, xelval *alpha); 00067 00068 private: 00069 int _pnm_format; 00070 }; 00071 00072 00073 // The TypedWritable interface follows. 00074 public: 00075 static void register_with_read_factory(); 00076 00077 protected: 00078 static TypedWritable *make_PNMFileTypePNM(const FactoryParams ¶ms); 00079 00080 public: 00081 static TypeHandle get_class_type() { 00082 return _type_handle; 00083 } 00084 static void init_type() { 00085 PNMFileType::init_type(); 00086 register_type(_type_handle, "PNMFileTypePNM", 00087 PNMFileType::get_class_type()); 00088 } 00089 virtual TypeHandle get_type() const { 00090 return get_class_type(); 00091 } 00092 virtual TypeHandle force_init_type() {init_type(); return get_class_type();} 00093 00094 private: 00095 static TypeHandle _type_handle; 00096 }; 00097 00098 #endif // HAVE_PNM 00099 00100 #endif 00101 00102