14 #ifndef PNMFILETYPEPNG_H 15 #define PNMFILETYPEPNG_H 31 class EXPCL_PANDA_PNMIMAGETYPES PNMFileTypePNG :
public PNMFileType {
35 virtual std::string get_name()
const;
37 virtual int get_num_extensions()
const;
39 virtual std::string get_suggested_extension()
const;
45 const std::string &magic_number = std::string());
51 Reader(
PNMFileType *type, std::istream *file,
bool owns_file, std::string magic_number);
54 virtual int read_data(
xel *array, xelval *alpha_data);
58 static void png_read_data(png_structp png_ptr, png_bytep data,
61 static void png_error(png_structp png_ptr, png_const_charp error_msg);
62 static void png_warning(png_structp png_ptr, png_const_charp warning_msg);
75 Writer(
PNMFileType *type, std::ostream *file,
bool owns_file);
78 virtual int write_data(
xel *array, xelval *alpha);
82 static int make_png_bit_depth(
int bit_depth);
83 static void png_write_data(png_structp png_ptr, png_bytep data,
85 static void png_flush_data(png_structp png_ptr);
87 static void png_error(png_structp png_ptr, png_const_charp error_msg);
88 static void png_warning(png_structp png_ptr, png_const_charp warning_msg);
101 static void register_with_read_factory();
110 static void init_type() {
111 PNMFileType::init_type();
113 PNMFileType::get_class_type());
116 return get_class_type();
118 virtual TypeHandle force_init_type() {init_type();
return get_class_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.
Base class for objects that can be written to and read from Bam files.
void register_type(TypeHandle &type_handle, const std::string &name)
This inline function is just a convenient way to call TypeRegistry::register_type(),...
PANDA 3D SOFTWARE Copyright (c) Carnegie Mellon University.
This is the base class of a family of classes that represent particular image file types that PNMImag...
An instance of this class is passed to the Factory when requesting it to do its business and construc...
This is an abstract base class that defines the interface for reading image files of various types.
get_extension
Returns the nth possible filename extension associated with this particular file type,...
This is an abstract base class that defines the interface for writing image files of various types.
PANDA 3D SOFTWARE Copyright (c) Carnegie Mellon University.
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...
virtual bool has_magic_number() const
Returns true if this particular file type uses a magic number to identify it, false otherwise.
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.
TypeHandle is the identifier used to differentiate C++ class types.
PANDA 3D SOFTWARE Copyright (c) Carnegie Mellon University.
PANDA 3D SOFTWARE Copyright (c) Carnegie Mellon University.