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
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
|
/**************************************************************************/
/* */
/* Copyright (c) 2001, 2007 NoMachine, http://www.nomachine.com/. */
/* */
/* NXCOMP, NX protocol compression and NX extensions to this software */
/* are copyright of NoMachine. Redistribution and use of the present */
/* software is allowed according to terms specified in the file LICENSE */
/* which comes in the source distribution. */
/* */
/* Check http://www.nomachine.com/licensing.html for applicability. */
/* */
/* NX and NoMachine are trademarks of NoMachine S.r.l. */
/* */
/* All rights reserved. */
/* */
/**************************************************************************/
#ifndef Unpack_H
#define Unpack_H
#include "NXpack.h"
#include "Z.h"
#define LSBFirst 0
#define MSBFirst 1
#define SPLIT_PATTERN 0x88
typedef ColorMask T_colormask;
//
// Pixel geometry of channel's display.
//
typedef struct
{
unsigned int depth1_bpp;
unsigned int depth4_bpp;
unsigned int depth8_bpp;
unsigned int depth16_bpp;
unsigned int depth24_bpp;
unsigned int depth32_bpp;
unsigned int red_mask;
unsigned int green_mask;
unsigned int blue_mask;
unsigned int image_byte_order;
unsigned int bitmap_bit_order;
unsigned int scanline_unit;
unsigned int scanline_pad;
} T_geometry;
//
// Colormap is used to remap colors
// from source to destination depth.
//
typedef struct
{
unsigned int entries;
unsigned int *data;
} T_colormap;
//
// Alpha channel data is added to 32
// bits images at the time they are
// unpacked.
//
typedef struct
{
unsigned int entries;
unsigned char *data;
} T_alpha;
//
// The ZLIB stream structure used for
// the decompression.
//
extern z_stream unpackStream;
//
// Initialize the ZLIB stream used for
// decompression.
//
void UnpackInit();
//
// Free the ZLIB stream.
//
void UnpackDestroy();
//
// Get the destination bits per pixel
// based on the drawable depth.
//
int UnpackBitsPerPixel(T_geometry *geometry, unsigned int depth);
//
// Unpack the source data into the X
// bitmap.
//
int Unpack8(T_geometry *geometry, const T_colormask *colormask, int src_depth, int src_width,
int src_height, unsigned char *src_data, int src_size, int dst_depth,
int dst_width, int dst_height, unsigned char *dst_data, int dst_size);
int Unpack16(T_geometry *geometry, const T_colormask *colormask, int src_depth, int src_width,
int src_height, unsigned char *src_data, int src_size, int dst_depth,
int dst_width, int dst_height, unsigned char *dst_data, int dst_size);
int Unpack24(T_geometry *geometry, const T_colormask *colormask, int src_depth, int src_width,
int src_height, unsigned char *src_data, int src_size, int dst_depth,
int dst_width, int dst_height, unsigned char *dst_data, int dst_size);
int Unpack8(T_geometry *geometry, T_colormap *colormap, int src_depth, int src_width,
int src_height, unsigned char *src_data, int src_size, int dst_depth,
int dst_width, int dst_height, unsigned char *dst_data, int dst_size);
int Unpack15(T_geometry *geometry, int src_depth, int src_width,
int src_height, unsigned char *src_data, int src_size, int dst_depth,
int dst_width, int dst_height, unsigned char *dst_data, int dst_size);
int Unpack16(T_geometry *geometry, int src_depth, int src_width,
int src_height, unsigned char *src_data, int src_size, int dst_depth,
int dst_width, int dst_height, unsigned char *dst_data, int dst_size);
int Unpack24(T_geometry *geometry, int src_depth, int src_width,
int src_height, unsigned char *src_data, int src_size, int dst_depth,
int dst_width, int dst_height, unsigned char *dst_data, int dst_size);
#endif /* Unpack_H */
|
