67 lines
1.6 KiB
C
67 lines
1.6 KiB
C
|
/**
|
||
|
|
* PANDA 3D SOFTWARE
|
||
|
|
* Copyright (c) Carnegie Mellon University. All rights reserved.
|
||
|
|
*
|
||
|
|
* All use of this software is subject to the terms of the revised BSD
|
||
|
|
* license. You should have received a copy of this license along
|
||
|
|
* with this source code in a file named "LICENSE."
|
||
|
|
*
|
||
|
|
* @file pnmReader.h
|
||
|
|
* @author drose
|
||
|
|
* @date 2000-06-14
|
||
|
|
*/
|
||
|
|
|
||
|
|
#ifndef PNMREADER_H
|
||
|
|
#define PNMREADER_H
|
||
|
|
|
||
|
|
#include "pandabase.h"
|
||
|
|
|
||
|
|
#include "pnmImageHeader.h"
|
||
|
|
class PfmFile;
|
||
|
|
|
||
|
|
/**
|
||
|
|
* This is an abstract base class that defines the interface for reading image
|
||
|
|
* files of various types. Any particular image file type that can be read
|
||
|
|
* must define a class that inherits from PNMReader to read it.
|
||
|
|
*/
|
||
|
|
class EXPCL_PANDA_PNMIMAGE PNMReader : public PNMImageHeader {
|
||
|
|
protected:
|
||
|
|
INLINE PNMReader(PNMFileType *type, std::istream *file, bool owns_file);
|
||
|
|
|
||
|
|
public:
|
||
|
|
virtual ~PNMReader();
|
||
|
|
INLINE void set_read_size(int x_size, int y_size);
|
||
|
|
|
||
|
|
INLINE PNMFileType *get_type() const;
|
||
|
|
|
||
|
|
virtual void prepare_read();
|
||
|
|
virtual bool is_floating_point();
|
||
|
|
virtual bool read_pfm(PfmFile &pfm);
|
||
|
|
virtual int read_data(xel *array, xelval *alpha);
|
||
|
|
virtual bool supports_read_row() const;
|
||
|
|
virtual bool read_row(xel *array, xelval *alpha, int x_size, int y_size);
|
||
|
|
|
||
|
|
virtual bool supports_stream_read() const;
|
||
|
|
|
||
|
|
INLINE bool is_valid() const;
|
||
|
|
|
||
|
|
private:
|
||
|
|
int get_reduction_shift(int orig_size, int new_size);
|
||
|
|
|
||
|
|
protected:
|
||
|
|
PNMFileType *_type;
|
||
|
|
bool _owns_file;
|
||
|
|
std::istream *_file;
|
||
|
|
bool _is_valid;
|
||
|
|
|
||
|
|
int _read_x_size, _read_y_size;
|
||
|
|
bool _has_read_size;
|
||
|
|
|
||
|
|
int _x_shift, _y_shift;
|
||
|
|
int _orig_x_size, _orig_y_size;
|
||
|
|
};
|
||
|
|
|
||
|
|
#include "pnmReader.I"
|
||
|
|
|
||
|
|
#endif
|