1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
|
/**
* PIC_RW - Qt PIC Support
* Copyright (C) 2007 Ruben Lopez <r.lopez@bren.es>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
* ----------------------------------------------------------------------------
*/
/* This code is based on the GIMP-PIC plugin by Halfdan Ingvarsson,
* and relicensed from GPL to LGPL to accomodate the KDE licensing policy
* with his permission.
* These is the original copyright:
* Copyright (C) 1998 Halfdan Ingvarsson
*/
#ifndef __PIC_RW_H__
#define __PIC_RW_H__
#define PIC_MAGIC_NUMBER 0x5380f634
#include <QtCore/QFile>
#include <QtGui/QImageIOPlugin>
#include <QtGui/QColor>
/**
* How fields are distributed over the image
*/
typedef enum {
NONE = 0, /* No picture */
ODD = 1, /* Odd scanlines */
EVEN = 2, /* Even scanlines */
BOTH = 3 /* Every scanline */
} PICFields;
/**
* Type of a channel
*/
typedef enum {
UNCOMPRESSED = 0, /* Image is uncompressed */
RLE = 2 /* Run length compression */
} PICChannelType;
/**
* Channel codes
*/
typedef enum {
RED = 0x80, /* Red channel */
GREEN = 0x40, /* Green channel */
BLUE = 0x20, /* Blue channel */
ALPHA = 0x10 /* Alpha channel */
} PICChannelCode;
/**
* PIC format header
*/
typedef struct {
qint32 magic; /* PIC_MAGIC_NUMBER */
float version; /* Version of format */
char comment[80]; /* Prototype description */
char id[4]; /* "PICT" */
qint16 width; /* Image width, in pixels */
qint16 height; /* Image height, in pixels */
float ratio; /* Pixel aspect ratio */
qint16 fields; /* Picture field type */
qint16 pad; /* Unused */
} PICHeader;
/**
* PIC channel header
*/
typedef struct {
char chained; /* 1 if another packet follows, else 0 */
char size; /* Bits per pixel by channel */
char type; /* RLE or uncompressed */
char channel; /* Channel code (which planes are affected by this channel) */
} PICChannel;
#define HEADER_SIZE sizeof(PICHeader)
#define CHANNEL_SIZE sizeof(PICChannel)
/**
* Reads the PIC header and checks that it is OK
* @param dev The QT device to read from
* @param hdr A pointer to the PIC header
* @param peek Keep bytes in the device
* @return true on success
*/
bool picReadHeader(QIODevice *dev, PICHeader *hdr, bool peek = false);
/// Pic read handler for Qt / KDE
void pic_read(QIODevice *dev, QImage *img);
/// Pic write handler for Qt / KDE
void pic_write(QIODevice *dev, const QImage *img);
#endif//__PIC_RW_H__
|