mirror of
git://projects.qi-hardware.com/ben-blinkenlights.git
synced 2024-06-25 09:17:37 +03:00
8643e457fa
- ubb-vga2.c (session, grab): made the frame buffer "void *" and pass frame buffer resolution - ubb-vga.h: color encoding and items shared between compilation units - ubb-vga2.c (thres, pattern, grab), grabfb.c: move to grabfb.c - ubb-vga2.c (map): make global, for use by grabfb.c - ubb-vga2.c (pick, pattern, tricolor, grid): removed obsolete test image generators - Makefile (OBJS, ubb-vga2): added grabfb.o - Makefile (clean): remove only .o files - Makefile (spotless): remove only executables
52 lines
1010 B
C
52 lines
1010 B
C
/*
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* grabfb.c - Grab the Ben's main frame buffer
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*
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* Written 2011 by Werner Almesberger
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* Copyright 2011 Werner Almesberger
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*/
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#include <stdint.h>
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#include <assert.h>
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#include "ubb-vga.h"
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uint8_t thres = 63;
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static uint8_t pattern(int r, int g, int b)
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{
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return ((r ? R_VAL : 0) | (g ? G_VAL : 0) | (b ? B_VAL : 0))*0x11;
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}
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void grabfb(void *f, int xres, int yres)
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{
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uint32_t *fb = map(0x01d00000, 4*320*240);
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uint8_t *p = f;
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int x, y;
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uint32_t pix;
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uint8_t r, g, b;
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assert(xres == 640);
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assert(yres == 480);
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for (y = 0; y != 240; y++) {
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for (x = 0; x != 320; x++) {
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pix = *fb++;
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r = pix >> 16;
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g = pix >> 8;
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b = pix;
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p[0] = p[320] =
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pattern(r >= thres, g >= thres, b >= thres);
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p++;
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}
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p += 320;
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}
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}
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