| | 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 | |
| | 11 | #include <stdint.h> |
| | 12 | #include <fb.h> |
| | 13 | #include <crc32.h> |
| | 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; |
| | 22 | unsigned char * lineaddr; |
| | 23 | int i; |
| | 24 | |
| | 25 | uint32_t sum = 0; |
| | 26 | |
| | 27 | for (i = 0; i < height; i++) { |
| | 28 | lineaddr = fb->fbaddr + (i + y) * scanline + (4 * x); |
| | 29 | |
| | 30 | sum = crc32(lineaddr, width * 4, sum); |
| | 31 | } |
| | 32 | |
| | 33 | return sum; |
| | 34 | } |
| | 35 | |
| | 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; |
| | 41 | for (cy = 0; cy < height; cy++) |
| | 42 | { |
| | 43 | fbuf = (unsigned int *)fb->fbaddr; |
| | 44 | fbuf += (cy + y) * (fb->curmode.xres) + x; |
| | 45 | for (cx = 0; cx < width; cx++) |
| | 46 | *(ibuf++) = *(fbuf++); |
| | 47 | } |
| | 48 | } |
git.joshuawise.com / netwatch.git / blame_incremental