dtv-scan-tables.git - Digital TV scan tables

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/* $Id: display.c,v 1.19 2000/08/09 09:50:29 reinelt Exp $ * * framework for device drivers * * Copyright 1999, 2000 by Michael Reinelt (reinelt@eunet.at) * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2, or (at your option) * any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. * * * $Log: display.c,v $ * Revision 1.19 2000/08/09 09:50:29 reinelt * * opened 0.98 development * removed driver-specific signal-handlers * added 'quit'-function to driver structure * added global signal-handler * * Revision 1.18 2000/05/02 23:07:48 herp * Crystalfontz initial coding * * Revision 1.17 2000/05/02 06:05:00 reinelt * * driver for 3Com Palm Pilot added * * Revision 1.16 2000/04/28 05:19:55 reinelt * * first release of the Beckmann+Egle driver * * Revision 1.15 2000/04/12 08:05:45 reinelt * * first version of the HD44780 driver * * Revision 1.14 2000/04/03 17:31:52 reinelt * * suppress welcome message if display is smaller than 20x2 * change lcd4linux.ppm to 32 pixel high so KDE won't stretch the icon * * Revision 1.13 2000/03/30 16:46:57 reinelt * * configure now handles '--with-x' and '--without-x' correct * * Revision 1.12 2000/03/26 18:46:28 reinelt * * bug in pixmap.c that leaded to empty bars fixed * name conflicts with X11 resolved * * Revision 1.11 2000/03/25 05:50:43 reinelt * * memory leak in Raster_flush closed * driver family logic changed * * Revision 1.10 2000/03/23 07:24:48 reinelt * * PPM driver up and running (but slow!) * * Revision 1.9 2000/03/22 15:36:21 reinelt * * added '-l' switch (list drivers) * generic pixmap driver added * X11 Framework done * * Revision 1.8 2000/03/19 08:41:28 reinelt * * documentation available! README, README.MatrixOrbital, README.Drivers * added Skeleton.c as a starting point for new drivers * * Revision 1.7 2000/03/18 08:07:04 reinelt * * vertical bars implemented * bar compaction improved * memory information implemented * * Revision 1.6 2000/03/17 09:21:42 reinelt * * various memory statistics added * * Revision 1.5 2000/03/13 15:58:24 reinelt * * release 0.9 * moved row parsing to parser.c * all basic work finished * * Revision 1.4 2000/03/10 17:36:02 reinelt * * first unstable but running release * * Revision 1.3 2000/03/10 10:49:53 reinelt * * MatrixOrbital driver finished * * Revision 1.2 2000/03/06 06:04:06 reinelt * * minor cleanups * */ /* * exported functions: * * lcd_list (void) * lists all available drivers to stdout * * lcd_init (char *driver) * initializes the named driver * * lcd_query (int *rows, int *cols, int *xres, int *yres, int *bars) * queries the attributes of the selected driver * * lcd_clear () * clears the display * * int lcd_put (int row, int col, char *text) * writes text at row, col * * int lcd_bar (int type, int row, int col, int max, int len1, int len2) * draws a specified bar at row, col with len * * int lcd_flush (void) * flushes the framebuffer to the display * * int lcd_quit (void) * de-initializes the driver */ #include <stdlib.h> #include <stdio.h> #include <math.h> #include "cfg.h" #include "display.h" extern LCD Skeleton[]; extern LCD MatrixOrbital[]; extern LCD BeckmannEgle[]; extern LCD HD44780[]; extern LCD Crystalfontz[]; extern LCD PalmPilot[]; extern LCD Raster[]; extern LCD XWindow[]; FAMILY Driver[] = { { "Skeleton", Skeleton }, { "Matrix Orbital", MatrixOrbital }, { "Beckmann+Egle", BeckmannEgle }, { "HD 44780 based", HD44780 }, { "Crystalfontz", Crystalfontz }, { "3Com Palm Pilot", PalmPilot }, { "Raster", Raster }, #ifndef X_DISPLAY_MISSING { "X Window System", XWindow }, #endif { NULL } }; static LCD *Lcd = NULL; int lcd_list (void) { int i, j; printf ("available display drivers:"); for (i=0; Driver[i].name; i++) { printf ("\n %-16s:", Driver[i].name); for (j=0; Driver[i].Model[j].name; j++) { printf (" %s", Driver[i].Model[j].name); } } printf ("\n"); return 0; } int lcd_init (char *driver) { int i, j; for (i=0; Driver[i].name; i++) { for (j=0; Driver[i].Model[j].name; j++) { if (strcmp (Driver[i].Model[j].name, driver)==0) { Lcd=&Driver[i].Model[j]; if (Lcd->init==NULL) return 0; return Lcd->init(Lcd); } } } fprintf (stderr, "lcd_init(%s) failed: no such display\n", driver); return -1; } int lcd_query (int *rows, int *cols, int *xres, int *yres, int *bars) { if (Lcd==NULL) return -1; if (rows) *rows=Lcd->rows; if(cols) *cols=Lcd->cols; if (xres) *xres=Lcd->xres; if (yres) *yres=Lcd->yres; if (bars) *bars=Lcd->bars; return 0; } int lcd_clear (void) { if (Lcd->clear==NULL) return 0; return Lcd->clear(); } int lcd_put (int row, int col, char *text) { if (row<1 || row>Lcd->rows) return -1; if (col<1 || col>Lcd->cols) return -1; if (Lcd->put==NULL) return 0; return Lcd->put(row-1, col-1, text); } int lcd_bar (int type, int row, int col, int max, int len1, int len2) { if (row<1 || row>Lcd->rows) return -1; if (col<1 || col>Lcd->cols) return -1; if (!(type & (BAR_H2 | BAR_V2))) len2=len1; if (type & BAR_LOG) { len1=(double)max*log(len1+1)/log(max); len2=(double)max*log(len2+1)/log(max); } if (Lcd->put==NULL) return 0; return Lcd->bar (type & BAR_HV, row-1, col-1, max, len1, len2); } int lcd_flush (void) { if (Lcd->flush==NULL) return 0; return Lcd->flush(); } int lcd_quit (void) { if (Lcd->quit==NULL) return 0; return Lcd->quit(); }


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