1 | /*****************************************************************************/ |
2 | /* */ |
3 | /* koala.c */ |
4 | /* */ |
5 | /* Koala format backend for the sp65 sprite and bitmap utility */ |
6 | /* */ |
7 | /* */ |
8 | /* */ |
9 | /* (C) 2012, Ullrich von Bassewitz */ |
10 | /* Roemerstrasse 52 */ |
11 | /* D-70794 Filderstadt */ |
12 | /* EMail: uz@cc65.org */ |
13 | /* */ |
14 | /* */ |
15 | /* This software is provided 'as-is', without any expressed or implied */ |
16 | /* warranty. In no event will the authors be held liable for any damages */ |
17 | /* arising from the use of this software. */ |
18 | /* */ |
19 | /* Permission is granted to anyone to use this software for any purpose, */ |
20 | /* including commercial applications, and to alter it and redistribute it */ |
21 | /* freely, subject to the following restrictions: */ |
22 | /* */ |
23 | /* 1. The origin of this software must not be misrepresented; you must not */ |
24 | /* claim that you wrote the original software. If you use this software */ |
25 | /* in a product, an acknowledgment in the product documentation would be */ |
26 | /* appreciated but is not required. */ |
27 | /* 2. Altered source versions must be plainly marked as such, and must not */ |
28 | /* be misrepresented as being the original software. */ |
29 | /* 3. This notice may not be removed or altered from any source */ |
30 | /* distribution. */ |
31 | /* */ |
32 | /*****************************************************************************/ |
33 | |
34 | |
35 | |
36 | /* common */ |
37 | #include "attrib.h" |
38 | |
39 | /* sp65 */ |
40 | #include "error.h" |
41 | #include "koala.h" |
42 | |
43 | |
44 | |
45 | /*****************************************************************************/ |
46 | /* Data */ |
47 | /*****************************************************************************/ |
48 | |
49 | |
50 | |
51 | /* Screen size of a koala picture */ |
52 | #define WIDTH 160U |
53 | #define HEIGHT 200U |
54 | |
55 | |
56 | |
57 | /*****************************************************************************/ |
58 | /* Code */ |
59 | /*****************************************************************************/ |
60 | |
61 | |
62 | |
63 | StrBuf* GenKoala (const Bitmap* B, const Collection* A attribute ((unused))) |
64 | /* Generate binary output in koala format for the bitmap B. The output is |
65 | ** stored in a string buffer (which is actually a dynamic char array) and |
66 | ** returned. |
67 | */ |
68 | { |
69 | StrBuf* D; |
70 | unsigned char Screen[160][200]; |
71 | unsigned char X, Y; |
72 | |
73 | /* Koala pictures are always 160x200 in size with 16 colors */ |
74 | if (!BitmapIsIndexed (B) || |
75 | GetBitmapColors (B) > 16 || |
76 | GetBitmapHeight (B) != HEIGHT || |
77 | GetBitmapWidth (B) != WIDTH) { |
78 | |
79 | Error ("Bitmaps converted to koala format must be in indexed mode " |
80 | "with 16 colors max and a size of %ux%u" , WIDTH, HEIGHT); |
81 | } |
82 | |
83 | /* Read the image into Screen */ |
84 | for (Y = 0; Y < HEIGHT; ++Y) { |
85 | for (X = 0; X < WIDTH; ++X) { |
86 | Screen[X][Y] = (unsigned char) GetPixel (B, X, Y).Index; |
87 | } |
88 | } |
89 | |
90 | /* Create the output buffer and resize it to the required size. */ |
91 | D = NewStrBuf (); |
92 | SB_Realloc (D, 10003); |
93 | |
94 | /* Add $4400 as load address */ |
95 | SB_AppendChar (D, 0x00); |
96 | SB_AppendChar (D, 0x44); |
97 | |
98 | /* TODO: The actual work ;-) */ |
99 | (void) Screen; |
100 | |
101 | /* Return the converted bitmap */ |
102 | return D; |
103 | } |
104 | |