Panda3D
pnmFileTypePfm.h
1 // Filename: pnmFileTypePfm.h
2 // Created by: drose (17Jun00)
3 //
4 ////////////////////////////////////////////////////////////////////
5 //
6 // PANDA 3D SOFTWARE
7 // Copyright (c) Carnegie Mellon University. All rights reserved.
8 //
9 // All use of this software is subject to the terms of the revised BSD
10 // license. You should have received a copy of this license along
11 // with this source code in a file named "LICENSE."
12 //
13 ////////////////////////////////////////////////////////////////////
14 
15 #ifndef PNMFILETYPEPFM_H
16 #define PNMFILETYPEPFM_H
17 
18 #include "pandabase.h"
19 
20 #include "pnmFileType.h"
21 #include "pnmImage.h"
22 #include "pnmReader.h"
23 #include "pnmWriter.h"
24 
25 ////////////////////////////////////////////////////////////////////
26 // Class : PNMFileTypePfm
27 // Description : For reading and writing PFM files using the basic
28 // PNMImage interface, as if they were basic RGB files.
29 ////////////////////////////////////////////////////////////////////
30 class EXPCL_PANDA_PNMIMAGE PNMFileTypePfm : public PNMFileType {
31 public:
33 
34  virtual string get_name() const;
35 
36  virtual int get_num_extensions() const;
37  virtual string get_extension(int n) const;
38  virtual string get_suggested_extension() const;
39 
40  virtual bool has_magic_number() const;
41  virtual bool matches_magic_number(const string &magic_number) const;
42 
43  virtual PNMReader *make_reader(istream *file, bool owns_file = true,
44  const string &magic_number = string());
45  virtual PNMWriter *make_writer(ostream *file, bool owns_file = true);
46 
47 public:
48  class Reader : public PNMReader {
49  public:
50  Reader(PNMFileType *type, istream *file, bool owns_file, string magic_number);
51 
52  virtual bool is_floating_point();
53  virtual bool read_pfm(PfmFile &pfm);
54 
55  private:
56  PN_float32 _scale;
57  };
58 
59  class Writer : public PNMWriter {
60  public:
61  Writer(PNMFileType *type, ostream *file, bool owns_file);
62 
63  virtual bool supports_floating_point();
64  virtual bool supports_integer();
65  virtual bool write_pfm(const PfmFile &pfm);
66  };
67 
68 
69  // The TypedWritable interface follows.
70 public:
71  static void register_with_read_factory();
72 
73 protected:
74  static TypedWritable *make_PNMFileTypePfm(const FactoryParams &params);
75 
76 public:
77  static TypeHandle get_class_type() {
78  return _type_handle;
79  }
80  static void init_type() {
81  PNMFileType::init_type();
82  register_type(_type_handle, "PNMFileTypePfm",
83  PNMFileType::get_class_type());
84  }
85  virtual TypeHandle get_type() const {
86  return get_class_type();
87  }
88  virtual TypeHandle force_init_type() {init_type(); return get_class_type();}
89 
90 private:
91  static TypeHandle _type_handle;
92 };
93 
94 #endif
95 
96 
virtual string get_extension(int n) const
Returns the nth possible filename extension associated with this particular file type, without a leading dot.
Definition: pnmFileType.cxx:62
virtual PNMWriter * make_writer(ostream *file, bool owns_file=true)
Allocates and returns a new PNMWriter suitable for reading from this file type, if possible...
Base class for objects that can be written to and read from Bam files.
Definition: typedWritable.h:37
This is the base class of a family of classes that represent particular image file types that PNMImag...
Definition: pnmFileType.h:35
virtual PNMReader * make_reader(istream *file, bool owns_file=true, const string &magic_number=string())
Allocates and returns a new PNMReader suitable for reading from this file type, if possible...
virtual bool matches_magic_number(const string &magic_number) const
Returns true if the indicated "magic number" byte stream (the initial few bytes read from the file) m...
Defines a pfm file, a 2-d table of floating-point numbers, either 3-component or 1-component, or with a special extension, 2- or 4-component.
Definition: pfmFile.h:34
An instance of this class is passed to the Factory when requesting it to do its business and construc...
Definition: factoryParams.h:40
This is an abstract base class that defines the interface for reading image files of various types...
Definition: pnmReader.h:31
This is an abstract base class that defines the interface for writing image files of various types...
Definition: pnmWriter.h:31
For reading and writing PFM files using the basic PNMImage interface, as if they were basic RGB files...
virtual bool has_magic_number() const
Returns true if this particular file type uses a magic number to identify it, false otherwise...
Definition: pnmFileType.cxx:89
TypeHandle is the identifier used to differentiate C++ class types.
Definition: typeHandle.h:85
virtual int get_num_extensions() const
Returns the number of different possible filename extensions associated with this particular file typ...
Definition: pnmFileType.cxx:50
virtual string get_suggested_extension() const
Returns a suitable filename extension (without a leading dot) to suggest for files of this type...
Definition: pnmFileType.cxx:75