14 #ifndef PNMFILETYPEJPG_H
15 #define PNMFILETYPEJPG_H
26 #ifndef WIN32_LEAN_AND_MEAN
27 #define WIN32_LEAN_AND_MEAN 1
41 #pragma push_macro("INLINE")
52 #pragma pop_macro("INLINE")
58 class EXPCL_PANDA_PNMIMAGETYPES PNMFileTypeJPG :
public PNMFileType {
62 virtual std::string get_name()
const;
72 const std::string &magic_number = std::string());
78 Reader(
PNMFileType *type, std::istream *file,
bool owns_file, std::string magic_number);
81 virtual void prepare_read();
82 virtual int read_data(
xel *array, xelval *alpha);
85 struct jpeg_decompress_struct _cinfo;
87 struct jpeg_error_mgr pub;
88 jmp_buf setjmp_buffer;
90 typedef struct my_error_mgr *_my_error_ptr;
91 struct my_error_mgr _jerr;
97 Writer(
PNMFileType *type, std::ostream *file,
bool owns_file);
99 virtual int write_data(
xel *array, xelval *alpha);
105 static void register_with_read_factory();
114 static void init_type() {
115 PNMFileType::init_type();
117 PNMFileType::get_class_type());
120 return get_class_type();
122 virtual TypeHandle force_init_type() {init_type();
return get_class_type();}
An instance of this class is passed to the Factory when requesting it to do its business and construc...
This is the base class of a family of classes that represent particular image file types that PNMImag...
virtual bool has_magic_number() const
Returns true if this particular file type uses a magic number to identify it, false otherwise.
get_suggested_extension
Returns a suitable filename extension (without a leading dot) to suggest for files of this type,...
virtual PNMReader * make_reader(std::istream *file, bool owns_file=true, const std::string &magic_number=std::string())
Allocates and returns a new PNMReader suitable for reading from this file type, if possible.
get_num_extensions
Returns the number of different possible filename extensions associated with this particular file typ...
virtual PNMWriter * make_writer(std::ostream *file, bool owns_file=true)
Allocates and returns a new PNMWriter suitable for reading from this file type, if possible.
get_extension
Returns the nth possible filename extension associated with this particular file type,...
virtual bool matches_magic_number(const std::string &magic_number) const
Returns true if the indicated "magic number" byte stream (the initial few bytes read from the file) m...
This is an abstract base class that defines the interface for reading image files of various types.
This is an abstract base class that defines the interface for writing image files of various types.
TypeHandle is the identifier used to differentiate C++ class types.
Base class for objects that can be written to and read from Bam files.
PANDA 3D SOFTWARE Copyright (c) Carnegie Mellon University.
PANDA 3D SOFTWARE Copyright (c) Carnegie Mellon University.
PANDA 3D SOFTWARE Copyright (c) Carnegie Mellon University.
PANDA 3D SOFTWARE Copyright (c) Carnegie Mellon University.
void register_type(TypeHandle &type_handle, const std::string &name)
This inline function is just a convenient way to call TypeRegistry::register_type(),...