dagon.graphics.compressedimage source code

1 /*
2 Copyright (c) 2019 Timur Gafarov
3 
4 Boost Software License - Version 1.0 - August 17th, 2003
5 Permission is hereby granted, free of charge, to any person or organization
6 obtaining a copy of the software and accompanying documentation covered by
7 this license (the "Software") to use, reproduce, display, distribute,
8 execute, and transmit the Software, and to prepare derivative works of the
9 Software, and to permit third-parties to whom the Software is furnished to
10 do so, all subject to the following:
11 
12 The copyright notices in the Software and this entire statement, including
13 the above license grant, this restriction and the following disclaimer,
14 must be included in all copies of the Software, in whole or in part, and
15 all derivative works of the Software, unless such copies or derivative
16 works are solely in the form of machine-executable object code generated by
17 a source language processor.
18 
19 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
20 IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
21 FITNESS FOR A PARTICULAR PURPOSE, TITLE AND NON-INFRINGEMENT. IN NO EVENT
22 SHALL THE COPYRIGHT HOLDERS OR ANYONE DISTRIBUTING THE SOFTWARE BE LIABLE
23 FOR ANY DAMAGES OR OTHER LIABILITY, WHETHER IN CONTRACT, TORT OR OTHERWISE,
24 ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
25 DEALINGS IN THE SOFTWARE.
26 */
27 
28 module dagon.graphics.compressedimage;
29 
30 import std.stdio;
31 
32 import dlib.core.memory;
33 import dlib.image.color;
34 import dlib.image.image;
35 
36 enum CompressedImageFormat
37 {
38     S3TC_RGB_DXT1,
39     S3TC_RGBA_DXT3,
40     S3TC_RGBA_DXT5,
41 
42     RGTC1_R,
43     RGTC1_R_S,
44     RGTC2_RG,
45     RGTC2_RG_S,
46 
47     BPTC_RGBA_UNORM,
48     BPTC_SRGBA_UNORM,
49     BPTC_RGB_SF,
50     BPTC_RGB_UF
51 }
52 
53 class CompressedImage: SuperImage
54 {
55     uint _width;
56     uint _height;
57     CompressedImageFormat _compressedImageFormat;
58     uint _mipMapLevels;
59     size_t _bufferSize;
60     ubyte[] _data;
61 
62     this(uint w, uint h, CompressedImageFormat format, uint mipmaps, size_t bufferSize)
63     {
64         _width = w;
65         _height = h;
66         _compressedImageFormat = format;
67         _mipMapLevels = mipmaps;
68         _bufferSize = bufferSize;
69         _data = New!(ubyte[])(_bufferSize);
70     }
71 
72     ~this()
73     {
74         if (data.length)
75             Delete(_data);
76     }
77 
78     void free()
79     {
80         Delete(this);
81     }
82 
83     @property uint width()
84     {
85         return _width;
86     }
87 
88     @property uint height()
89     {
90         return _height;
91     }
92 
93     @property uint bitDepth()
94     {
95         return 0;
96     }
97 
98     @property uint channels()
99     {
100         return 0;
101     }
102 
103     @property uint pixelSize()
104     {
105         return 0;
106     }
107 
108     @property uint pixelFormat()
109     {
110         return PixelFormat.RGBA8;
111     }
112 
113     @property CompressedImageFormat compressedFormat()
114     {
115         return _compressedImageFormat;
116     }
117 
118     @property uint mipMapLevels()
119     {
120         return _mipMapLevels;
121     }
122 
123     @property ubyte[] data()
124     {
125         return _data;
126     }
127 
128     @property SuperImage dup()
129     {
130         auto res = New!CompressedImage(_width, _height, _compressedImageFormat, _mipMapLevels, _bufferSize);
131         res.data[] = data[];
132         return res;
133     }
134 
135     SuperImage createSameFormat(uint w, uint h)
136     {
137         return null;
138     }
139 
140     Color4f opIndex(int x, int y)
141     {
142         return Color4f(0.0f, 0.0f, 0.0f, 0.0f);
143     }
144 
145     Color4f opIndexAssign(Color4f c, int x, int y)
146     {
147         return Color4f(0.0f, 0.0f, 0.0f, 0.0f);
148     }
149 }