mirror of
git://projects.qi-hardware.com/ben-blinkenlights.git
synced 2024-11-23 22:11:53 +02:00
ubb-vga2: added test image generator (option -t)
- tstimg.c: test image generator - Makefile (OBJS): added tstimg.o - Makefile (LDFLAGS): tstimg.c needs libm - ubb-vga2.c (session, main): pass image generator as a function pointer - ubb-vga2.c (main): new option -t to select the test image generator
This commit is contained in:
Werner Almesberger
parent
8643e457fa
commit
19f43a77c9
@ -2,7 +2,8 @@
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CC=mipsel-linux-gcc
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CFLAGS=-Wall -g -O9 -march=mips32
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OBJS=ubb-vga2.o grabfb.o
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LDFLAGS=-lm
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OBJS=ubb-vga2.o grabfb.o tstimg.o
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.PHONY: all asm sch clean spotless
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335
ubb-vga/tstimg.c
Normal file
335
ubb-vga/tstimg.c
Normal file
@ -0,0 +1,335 @@
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/*
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* tstimg.c - Generate a test image
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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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/*
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* WARNING: this program does very nasty things to the Ben and it doesn't
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* like company. In particular, it resents:
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*
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* - the MMC driver - disable it with
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* echo jz4740-mmc.0 >/sys/bus/platform/drivers/jz4740-mmc/unbind
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* - the AT86RF230/1 kernel driver - use a kernel that doesn't have it
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* - anything that accesses the screen - kill GUI, X server, etc.
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* - the screen blanker - either disable it or make sure the screen stays
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* dark, e.g., with
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* echo 1 >/sys/devices/platform/jz4740-fb/graphics/fb0/blank
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* - probably a fair number of other daemons and things as well - best to
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* kill them all.
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*/
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#include <stdint.h>
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#include <stdio.h>
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#include <string.h>
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#include <math.h>
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#include "ubb-vga.h"
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/* ----- Pixel operations -------------------------------------------------- */
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#define WHITE 0xf
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static void pixel(void *f, int xres, int x, int y, uint8_t c)
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{
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uint8_t *p;
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p = f+((y*xres+x) >> 1);
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if (x & 1)
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*p = (*p & 0xf0) | c;
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else
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*p = (*p & 0x0f) | (c << 4);
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}
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/* ----- Color bars -------------------------------------------------------- */
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#define CBAR_X0 0.1
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#define CBAR_X1 0.9
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#define CBAR_Y0 0.55
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#define CBAR_Y1 0.75
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static void color_bars(void *f, int xres, int yres, ...)
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{
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int i, x, y;
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uint8_t c;
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for (i = 0; i < xres*(CBAR_X1-CBAR_X0); i++) {
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x = i+xres*CBAR_X0;
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c = 1+15*i/(xres*(CBAR_X1-CBAR_X0));
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for (y = yres*CBAR_Y0; y < yres*CBAR_Y1; y++)
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pixel(f, xres, x, y, c);
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}
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}
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/* ----- Grid -------------------------------------------------------------- */
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#define GRID 50
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static void grill(void *f, int ares, int bres, int swap)
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{
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int n, o;
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int i, a, b;
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n = ares/GRID+1;
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o = (ares % GRID)/2;
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if (!(n & 1)) {
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n--;
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o += GRID/2;
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}
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for (i = 0; i != n; i++) {
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a = o+i*GRID;
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for (b = 0; b != bres; b++)
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if (swap)
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pixel(f, bres, b, a, WHITE);
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else
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pixel(f, ares, a, b, WHITE);
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}
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if (o <= GRID/2) {
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o += GRID/2;
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n--;
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} else {
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o -= GRID/2;
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n++;
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}
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for (i = 0; i != n; i++) {
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a = o+i*GRID;
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for (b = -GRID/4; b != GRID/4; b++)
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if (swap)
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pixel(f, bres, bres/2+b, a, WHITE);
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else
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pixel(f, ares, a, bres/2+b, WHITE);
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}
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}
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static void grid(void *f, int xres, int yres)
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{
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grill(f, xres, yres, 0);
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grill(f, yres, xres, 1);
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}
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/* ----- Diagonal lines meeting at the sides ------------------------------- */
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static void sides(void *f, int xres, int yres)
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{
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int i;
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for (i = 0; i != yres/2; i++) {
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pixel(f, xres, i, yres/2-i, WHITE);
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pixel(f, xres, i, yres/2+i, WHITE);
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pixel(f, xres, xres-i-1, yres/2-i, WHITE);
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pixel(f, xres, xres-i-1, yres/2+i, WHITE);
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}
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for (i = 0; i != xres/2; i++) {
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pixel(f, xres, xres/2-i, i, WHITE);
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pixel(f, xres, xres/2+i, i, WHITE);
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pixel(f, xres, xres/2-i, yres-i-1, WHITE);
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pixel(f, xres, xres/2+i, yres-i-1, WHITE);
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}
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}
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/* ----- Text -------------------------------------------------------------- */
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static void dot(void *f, int xres, int x, int y, int color, int side)
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{
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int xi, yi;
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for (xi = -side; xi != side+1; xi++)
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for (yi = -side; yi != side+1; yi++)
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pixel(f, xres, x+xi, y+yi, color);
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}
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static void line45(void *f, int xres, int x, int y, int dx, int dy, int n,
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uint8_t color, int side)
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{
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while (n--) {
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dot(f, xres, x, y, color, side);
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x += dx;
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y += dy;
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}
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dot(f, xres, x, y, color, side);
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}
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static void arc(void *f, int xres, int x, int y, int n, int q,
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uint8_t color, int side)
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{
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int dx, dy;
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for (dx = 0; dx != n+1; dx++) {
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dy = sqrt(n*n-dx*dx);
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if (q & 1)
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dot(f, xres, x+dx, y-dy, color, side);
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if (q & 2)
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dot(f, xres, x+dx, y+dy, color, side);
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if (q & 4)
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dot(f, xres, x-dx, y+dy, color, side);
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if (q & 8)
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dot(f, xres, x-dx, y-dy, color, side);
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}
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}
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static void printc(void *f, int xres, int x, int y, char c, int n,
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uint8_t color, int side)
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{
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switch (c) {
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case '0':
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arc(f, xres, x+n, y+n, n, 9, color, side);
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line45(f, xres, x, y+n, 0, 1, 2*n, color, side);
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line45(f, xres, x+2*n, y+n, 0, 1, 2*n, color, side);
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arc(f, xres, x+n, y+3*n, n, 6, color, side);
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break;
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case '1':
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line45(f, xres, x+n, y, 0, 1, 4*n, color, side);
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break;
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case '2':
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arc(f, xres, x+n, y+n, n, 9, color, side);
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line45(f, xres, x+2*n, y+n, 0, 1, n, color, side);
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line45(f, xres, x, y+4*n, 1, -1, 2*n, color, side);
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line45(f, xres, x, y+4*n, 1, 0, 2*n, color, side);
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break;
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case '3':
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arc(f, xres, x+n, y+n, n, 3, color, side);
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arc(f, xres, x+n, y+3*n, n, 3, color, side);
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line45(f, xres, x, y, 1, 0, n, color, side);
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line45(f, xres, x, y+2*n, 1, 0, n, color, side);
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line45(f, xres, x, y+4*n, 1, 0, n, color, side);
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break;
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case '4':
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line45(f, xres, x, y, 0, 1, 2*n, color, side);
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line45(f, xres, x, y+2*n, 1, 0, 2*n, color, side);
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line45(f, xres, x+2*n, y, 0, 1, 4*n, color, side);
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break;
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case '5':
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line45(f, xres, x, y, 1, 0, 2*n, color, side);
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line45(f, xres, x, y, 0, 1, 2*n, color, side);
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line45(f, xres, x, y+2*n, 1, 0, n, color, side);
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arc(f, xres, x+n, y+3*n, n, 7, color, side);
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break;
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case '6':
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arc(f, xres, x+n, y+n, n, 9, color, side);
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line45(f, xres, x, y+n, 0, 1, 2*n, color, side);
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arc(f, xres, x+n, y+3*n, n, 15, color, side);
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break;
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case '7':
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line45(f, xres, x, y, 1, 0, 2*n, color, side);
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line45(f, xres, x+2*n, y, 0, 1, 2*n, color, side);
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line45(f, xres, x, y+4*n, 1, -1, 2*n, color, side);
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break;
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case '8':
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arc(f, xres, x+n, y+n, n, 15, color, side);
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arc(f, xres, x+n, y+3*n, n, 15, color, side);
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break;
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case '9':
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arc(f, xres, x+n, y+n, n, 15, color, side);
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line45(f, xres, x+2*n, y+n, 0, 1, 2*n, color, side);
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arc(f, xres, x+n, y+3*n, n, 6, color, side);
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break;
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case 'x':
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line45(f, xres, x, y+n, 1, 1, 2*n, color, side);
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line45(f, xres, x, y+3*n, 1, -1, 2*n, color, side);
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break;
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case 'A':
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line45(f, xres, x, y+n, 1, -1, n, color, side);
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line45(f, xres, x, y+n, 0, 1, 3*n, color, side);
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line45(f, xres, x+n, y, 1, 1, n, color, side);
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line45(f, xres, x+2*n, y+n, 0, 1, 3*n, color, side);
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line45(f, xres, x, y+2*n, 1, 0, 2*n, color, side);
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break;
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case 'B':
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arc(f, xres, x+n, y+n, n, 3, color, side);
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arc(f, xres, x+n, y+3*n, n, 3, color, side);
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line45(f, xres, x, y, 1, 0, n, color, side);
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line45(f, xres, x, y+2*n, 1, 0, n, color, side);
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line45(f, xres, x, y+4*n, 1, 0, n, color, side);
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line45(f, xres, x, y, 0, 1, 4*n, color, side);
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break;
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case 'G':
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arc(f, xres, x+n, y+n, n, 9, color, side);
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line45(f, xres, x, y+n, 0, 1, 2*n, color, side);
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arc(f, xres, x+n, y+3*n, n, 6, color, side);
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line45(f, xres, x+n, y+2*n, 1, 0, n, color, side);
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line45(f, xres, x+2*n, y+2*n, 0, 1, n, color, side);
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break;
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case 'U':
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line45(f, xres, x, y, 0, 1, 3*n, color, side);
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line45(f, xres, x+2*n, y, 0, 1, 3*n, color, side);
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arc(f, xres, x+n, y+3*n, n, 6, color, side);
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break;
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case 'V':
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line45(f, xres, x, y, 0, 1, 3*n, color, side);
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line45(f, xres, x+2*n, y, 0, 1, 3*n, color, side);
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line45(f, xres, x+n, y+4*n, 1, -1, n, color, side);
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line45(f, xres, x+n, y+4*n, -1, -1, n, color, side);
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break;
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case '-':
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line45(f, xres, x, y+2*n, 1, 0, 2*n, color, side);
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break;
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case ' ':
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break;
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default:
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arc(f, xres, x+n, y+n, n, 9, color, side);
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line45(f, xres, x+n, y+2*n, 1, -1, n, color, side);
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line45(f, xres, x+n, y+3*n, 0, 1, n, color, side);
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break;
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}
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}
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static void text(void *f, int xres, int x, int y, const char *s, int n,
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uint8_t color, int side)
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{
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while (*s) {
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printc(f, xres, x, y, *s, n, color, side);
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x += 3*n;
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s++;
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}
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}
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static void ctext(void *f, int xres, int x, int y, const char *s, int n,
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uint8_t color, int side)
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{
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text(f, xres, x+n*(1-3*(int) strlen(s))/2, y-2*n, s, n, color, side);
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}
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/* ----- Generate the test image ------------------------------------------- */
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void tstimg(void *f, int xres, int yres)
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{
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char buf[20];
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memset(f, 0, xres*yres/2);
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grid(f, xres, yres);
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sides(f, xres, yres);
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color_bars(f, xres, yres);
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sprintf(buf, "UBB-VGA %dx%d", xres, yres);
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ctext(f, xres, xres/2, yres/2-GRID*0.75, buf, 10, WHITE, 3);
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ctext(f, xres, xres/2, yres*(CBAR_Y0+CBAR_Y1)/2, buf, 2, 0, 0);
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}
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@ -30,4 +30,6 @@ extern uint8_t thres;
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void grabfb(void *f, int xres, int yres);
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void tstimg(void *f, int xres, int yres);
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#endif /* !UBB_VGA_H */
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@ -390,14 +390,13 @@ static void frame(const uint32_t *f)
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/* ----- Command-line parsing and main loop -------------------------------- */
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static void session(int frames)
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static void session(void (*gen)(void *fb, int xres, int yres), int frames)
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{
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uint32_t f[2*240*(line_words+1)];
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int i;
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memset(f, 0, sizeof(f));
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grabfb(f, 640, 480);
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// grid(f);
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gen(f, 640, 480);
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disable_interrupts();
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@ -421,11 +420,15 @@ static void usage(const char *name)
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int main(int argc, char *const *argv)
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{
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void (*gen)(void *fb, int xres, int yres) = grabfb;
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int frames;
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int c;
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while ((c = getopt(argc, argv, "")) != EOF)
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while ((c = getopt(argc, argv, "t")) != EOF)
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switch (c) {
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case 't':
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gen = tstimg;
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break;
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default:
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usage(*argv);
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}
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@ -442,7 +445,7 @@ int main(int argc, char *const *argv)
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}
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setup();
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session(frames);
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session(gen, frames);
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cleanup();
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if (bad)
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