mirror of
https://github.com/netfun2000/lcd4linux.git
synced 2026-02-27 09:44:34 +08:00
michael
c98cf9ae78
git-svn-id: https://ssl.bulix.org/svn/lcd4linux/trunk@1170 3ae390bd-cb1e-0410-b409-cd5a39f66f1f
279 lines
6.3 KiB
C
279 lines
6.3 KiB
C
/* $Id: drv_dpf.c 980 2009-01-28 21:18:52Z michux $
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* $URL: https://ssl.bulix.org/svn/lcd4linux/trunk/drv_dpf.c $
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*
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* Very basic hacked picture frame driver. Uses external libdpf.
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* This is a first working approach for AX206 based DPFs. In future,
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* more DPFs might be covered by that library. Work in progress.
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*
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* See http://picframe.spritesserver.nl/ for more info.
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*
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* Copyright (C) 2008 Jeroen Domburg <picframe@spritesmods.com>
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* Modified from sample code by:
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* Copyright (C) 2005 Michael Reinelt <michael@reinelt.co.at>
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* Copyright (C) 2005, 2006, 2007 The LCD4Linux Team <lcd4linux-devel@users.sourceforge.net>
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*
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* This file is part of LCD4Linux.
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*
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* LCD4Linux 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, or (at your option)
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* any later version.
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*
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* LCD4Linux is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*
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*/
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/*
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*
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* exported fuctions:
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*
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* struct DRIVER drv_DPF
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*
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*/
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#include "config.h"
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#include <stdlib.h>
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#include <stdio.h>
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#include <unistd.h>
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#include <string.h>
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#include <errno.h>
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#include <libdpf/libdpf.h>
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#include "debug.h"
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#include "cfg.h"
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#include "qprintf.h"
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#include "udelay.h"
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#include "plugin.h"
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#include "widget.h"
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#include "widget_text.h"
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#include "widget_icon.h"
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#include "widget_bar.h"
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#include "drv.h"
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#include "drv_generic_graphic.h"
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static char Name[] = "DPF";
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static DPFContext *g_h;
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/* Display data */
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static unsigned char *g_fb;
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static int drv_dpf_open(const char *section)
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{
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int error;
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char *dev;
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// Currently, the Port specification is unused.
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dev = cfg_get(section, "Port", NULL);
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if (dev == NULL || *dev == '\0') {
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error("dpf: no '%s.Port' entry from %s", section, cfg_source());
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return -1;
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}
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error = dpf_open(NULL, &g_h);
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if (error < 0) {
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error("dpf: cannot open dpf device %s", dev);
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return -1;
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}
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return 0;
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}
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static int drv_dpf_close(void)
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{
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dpf_close(g_h);
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return 0;
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}
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#define _RGB565_0(p) \
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(( ((p.R) & 0xf8) ) | (((p.G) & 0xe0) >> 5))
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#define _RGB565_1(p) \
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(( ((p.G) & 0x1c) << 3 ) | (((p.B) & 0xf8) >> 3))
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static void drv_dpf_blit(const int row, const int col, const int height, const int width)
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{
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int r, c;
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short rect[4];
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unsigned long i;
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RGBA p;
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unsigned char *pix;
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pix = g_fb;
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for (r = row; r < row + height; r++) {
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for (c = col; c < col + width; c++) {
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p = drv_generic_graphic_rgb(r, c);
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*pix++ = _RGB565_0(p);
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*pix++ = _RGB565_1(p);
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}
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}
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rect[0] = col;
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rect[1] = row;
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rect[2] = col + width;
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rect[3] = row + height;
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dpf_screen_blit(g_h, g_fb, rect);
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}
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/* start graphic display */
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static int drv_dpf_start2(const char *section)
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{
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char *s;
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s = cfg_get(section, "Font", "6x8");
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if (s == NULL || *s == '\0') {
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error("%s: no '%s.Font' entry from %s", Name, section, cfg_source());
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return -1;
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}
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XRES = -1;
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YRES = -1;
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if (sscanf(s, "%dx%d", &XRES, &YRES) != 2 || XRES < 1 || YRES < 1) {
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error("%s: bad Font '%s' from %s", Name, s, cfg_source());
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return -1;
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}
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/* Fixme: provider other fonts someday... */
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/* Overridden - we have scaled the textout drawing */
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/* if (XRES != 6 && YRES != 8) {
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error("%s: bad Font '%s' from %s (only 6x8 at the moment)", Name, s, cfg_source());
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return -1;
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} */
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/* we dont want fonts below 6 width */
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if (XRES < 6) {
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error("%s: bad Font '%s' width '%d' using minimum of 6)", Name, s, XRES);
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XRES = 6;
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}
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/* we dont want fonts below 8 height */
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if (YRES < 8) {
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error("%s: bad Font '%s' height '%d' using minimum of 8)", Name, s, YRES);
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YRES = 8;
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}
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/* open communication with the display */
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if (drv_dpf_open(section) < 0) {
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return -1;
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}
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/* you surely want to allocate a framebuffer or something... */
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g_fb = malloc(g_h->height * g_h->width * g_h->bpp);
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/* set width/height from dpf firmware specs */
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DROWS = g_h->height;
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DCOLS = g_h->width;
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return 0;
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}
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/****************************************/
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/*** plugins ***/
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/****************************************/
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static void plugin_backlight(RESULT * result, RESULT * arg1)
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{
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int bl_on;
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bl_on = (R2N(arg1) == 0 ? 0 : 1);
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dpf_backlight(g_h, bl_on);
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SetResult(&result, R_NUMBER, &bl_on);
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}
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/****************************************/
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/*** widget callbacks ***/
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/****************************************/
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/* using drv_generic_text_draw(W) */
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/* using drv_generic_text_icon_draw(W) */
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/* using drv_generic_text_bar_draw(W) */
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/* using drv_generic_gpio_draw(W) */
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/****************************************/
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/*** exported functions ***/
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/****************************************/
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/* list models */
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int drv_dpf_list(void)
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{
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printf("generic hacked photo frame");
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return 0;
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}
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/* initialize driver & display */
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int drv_dpf_init2(const char *section, const int quiet)
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{
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int ret;
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/* real worker functions */
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drv_generic_graphic_real_blit = drv_dpf_blit;
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/* start display */
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if ((ret = drv_dpf_start2(section)) != 0)
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return ret;
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/* initialize generic graphic driver */
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if ((ret = drv_generic_graphic_init(section, Name)) != 0)
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return ret;
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if (!quiet) {
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char buffer[40];
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qprintf(buffer, sizeof(buffer), "%s %dx%d", Name, DCOLS, DROWS);
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if (drv_generic_graphic_greet(buffer, NULL)) {
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sleep(3);
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drv_generic_graphic_clear();
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}
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}
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/* register plugins */
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AddFunction("LCD::backlight", 1, plugin_backlight);
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return 0;
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}
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/* close driver & display */
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int drv_dpf_quit2(const int quiet)
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{
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info("%s: shutting down.", Name);
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/* clear display */
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drv_generic_graphic_clear();
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/* say goodbye... */
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if (!quiet) {
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drv_generic_graphic_greet("goodbye!", NULL);
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}
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drv_generic_graphic_quit();
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debug("closing connection");
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drv_dpf_close();
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return (0);
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}
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DRIVER drv_DPF = {
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.name = Name,
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.list = drv_dpf_list,
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.init = drv_dpf_init2,
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.quit = drv_dpf_quit2,
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};
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