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Commit | Line | Data |
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98e930a2 JP |
1 | /* generic.c |
2 | * Helper functions for dealing with generic RGB888 framebuffers | |
3 | * NetWatch system management mode administration console | |
4 | * | |
5 | * Copyright (c) 2008 Jacob Potter and Joshua Wise. All rights reserved. | |
6 | * This program is free software; you can redistribute and/or modify it under | |
7 | * the terms found in the file LICENSE in the root of this source tree. | |
8 | * | |
9 | */ | |
10 | ||
0a9d0188 JP |
11 | #include <stdint.h> |
12 | #include <fb.h> | |
74032dae | 13 | #include <crc32.h> |
0a9d0188 JP |
14 | |
15 | uint32_t checksum_rect_generic32(int x, int y, int width, int height) { | |
16 | ||
17 | /* Generic checksum_rect function for video modes with 32-bit pixels | |
18 | * (i.e. fb->curmode.bytestride = 4). | |
19 | */ | |
20 | ||
21 | int scanline = fb->curmode.xres * 4; | |
74032dae JW |
22 | unsigned char * lineaddr; |
23 | int i; | |
0a9d0188 JP |
24 | |
25 | uint32_t sum = 0; | |
26 | ||
27 | for (i = 0; i < height; i++) { | |
67109eef | 28 | lineaddr = fb->fbaddr + (i + y) * scanline + (4 * x); |
0a9d0188 | 29 | |
f2da68c5 | 30 | sum = crc32(lineaddr, width * 4, sum); |
0a9d0188 JP |
31 | } |
32 | ||
33 | return sum; | |
34 | } | |
35 | ||
66cd7e82 JW |
36 | void copy_pixels_generic32(char *buf, int x, int y, int width, int height) |
37 | { | |
38 | int cx, cy; | |
39 | unsigned int *ibuf = (unsigned int *)buf; | |
40 | unsigned int *fbuf; | |
ec5f9ca5 | 41 | for (cy = 0; cy < height; cy++) |
66cd7e82 JW |
42 | { |
43 | fbuf = (unsigned int *)fb->fbaddr; | |
ec5f9ca5 JP |
44 | fbuf += (cy + y) * (fb->curmode.xres) + x; |
45 | for (cx = 0; cx < width; cx++) | |
66cd7e82 JW |
46 | *(ibuf++) = *(fbuf++); |
47 | } | |
48 | } |