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-rw-r--r--drv_dpf.c278
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+/* $Id: drv_dpf.c 980 2009-01-28 21:18:52Z michux $
+ * $URL: https://ssl.bulix.org/svn/lcd4linux/trunk/drv_dpf.c $
+ *
+ * Very basic hacked picture frame driver. Uses external libdpf.
+ * This is a first working approach for AX206 based DPFs. In future,
+ * more DPFs might be covered by that library. Work in progress.
+ *
+ * See http://picframe.spritesserver.nl/ for more info.
+ *
+ * Copyright (C) 2008 Jeroen Domburg <picframe@spritesmods.com>
+ * Modified from sample code by:
+ * Copyright (C) 2005 Michael Reinelt <michael@reinelt.co.at>
+ * Copyright (C) 2005, 2006, 2007 The LCD4Linux Team <lcd4linux-devel@users.sourceforge.net>
+ *
+ * This file is part of LCD4Linux.
+ *
+ * LCD4Linux 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.
+ *
+ * LCD4Linux 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.
+ *
+ */
+
+/*
+ *
+ * exported fuctions:
+ *
+ * struct DRIVER drv_DPF
+ *
+ */
+
+#include "config.h"
+
+#include <stdlib.h>
+#include <stdio.h>
+#include <unistd.h>
+#include <string.h>
+#include <errno.h>
+
+#include <libdpf/libdpf.h>
+
+#include "debug.h"
+#include "cfg.h"
+#include "qprintf.h"
+#include "udelay.h"
+#include "plugin.h"
+#include "widget.h"
+#include "widget_text.h"
+#include "widget_icon.h"
+#include "widget_bar.h"
+#include "drv.h"
+
+#include "drv_generic_graphic.h"
+
+static char Name[] = "DPF";
+
+static DPFContext *g_h;
+
+/* Display data */
+static unsigned char *g_fb;
+
+static int drv_dpf_open(const char *section)
+{
+ int error;
+ char *dev;
+
+ // Currently, the Port specification is unused.
+
+ dev = cfg_get(section, "Port", NULL);
+ if (dev == NULL || *dev == '\0') {
+ error("dpf: no '%s.Port' entry from %s", section, cfg_source());
+ return -1;
+ }
+
+ error = dpf_open(NULL, &g_h);
+ if (error < 0) {
+ error("dpf: cannot open dpf device %s", dev);
+ return -1;
+ }
+
+ return 0;
+}
+
+
+static int drv_dpf_close(void)
+{
+ dpf_close(g_h);
+
+ return 0;
+}
+
+#define _RGB565_0(p) \
+ (( ((p.R) & 0xf8) ) | (((p.G) & 0xe0) >> 5))
+#define _RGB565_1(p) \
+ (( ((p.G) & 0x1c) << 3 ) | (((p.B) & 0xf8) >> 3))
+
+static void drv_dpf_blit(const int row, const int col, const int height, const int width)
+{
+ int r, c;
+ short rect[4];
+ unsigned long i;
+ RGBA p;
+ unsigned char *pix;
+
+ pix = g_fb;
+ for (r = row; r < row + height; r++) {
+ for (c = col; c < col + width; c++) {
+ p = drv_generic_graphic_rgb(r, c);
+ *pix++ = _RGB565_0(p);
+ *pix++ = _RGB565_1(p);
+ }
+ }
+ rect[0] = col;
+ rect[1] = row;
+ rect[2] = col + width;
+ rect[3] = row + height;
+ dpf_screen_blit(g_h, g_fb, rect);
+}
+
+
+/* start graphic display */
+static int drv_dpf_start2(const char *section)
+{
+ char *s;
+
+ s = cfg_get(section, "Font", "6x8");
+ if (s == NULL || *s == '\0') {
+ error("%s: no '%s.Font' entry from %s", Name, section, cfg_source());
+ return -1;
+ }
+
+ XRES = -1;
+ YRES = -1;
+ if (sscanf(s, "%dx%d", &XRES, &YRES) != 2 || XRES < 1 || YRES < 1) {
+ error("%s: bad Font '%s' from %s", Name, s, cfg_source());
+ return -1;
+ }
+
+ /* Fixme: provider other fonts someday... */
+ /* Overridden - we have scaled the textout drawing */
+/* if (XRES != 6 && YRES != 8) {
+ error("%s: bad Font '%s' from %s (only 6x8 at the moment)", Name, s, cfg_source());
+ return -1;
+ } */
+
+ /* we dont want fonts below 6 width */
+ if (XRES < 6) {
+ error("%s: bad Font '%s' width '%d' using minimum of 6)", Name, s, XRES);
+ XRES = 6;
+ }
+
+ /* we dont want fonts below 8 height */
+ if (YRES < 8) {
+ error("%s: bad Font '%s' height '%d' using minimum of 8)", Name, s, YRES);
+ YRES = 8;
+ }
+
+ /* open communication with the display */
+ if (drv_dpf_open(section) < 0) {
+ return -1;
+ }
+
+ /* you surely want to allocate a framebuffer or something... */
+ g_fb = malloc(g_h->height * g_h->width * g_h->bpp);
+
+ /* set width/height from dpf firmware specs */
+ DROWS = g_h->height;
+ DCOLS = g_h->width;
+
+ return 0;
+}
+
+/****************************************/
+/*** plugins ***/
+/****************************************/
+
+static void plugin_backlight(RESULT * result, RESULT * arg1)
+{
+ int bl_on;
+ bl_on = (R2N(arg1) == 0 ? 0 : 1);
+ dpf_backlight(g_h, bl_on);
+ SetResult(&result, R_NUMBER, &bl_on);
+}
+
+
+/****************************************/
+/*** widget callbacks ***/
+/****************************************/
+
+
+/* using drv_generic_text_draw(W) */
+/* using drv_generic_text_icon_draw(W) */
+/* using drv_generic_text_bar_draw(W) */
+/* using drv_generic_gpio_draw(W) */
+
+
+/****************************************/
+/*** exported functions ***/
+/****************************************/
+
+
+/* list models */
+int drv_dpf_list(void)
+{
+ printf("generic hacked photo frame");
+ return 0;
+}
+
+
+/* initialize driver & display */
+int drv_dpf_init2(const char *section, const int quiet)
+{
+ int ret;
+
+ /* real worker functions */
+ drv_generic_graphic_real_blit = drv_dpf_blit;
+
+ /* start display */
+ if ((ret = drv_dpf_start2(section)) != 0)
+ return ret;
+
+ /* initialize generic graphic driver */
+ if ((ret = drv_generic_graphic_init(section, Name)) != 0)
+ return ret;
+
+ if (!quiet) {
+ char buffer[40];
+ qprintf(buffer, sizeof(buffer), "%s %dx%d", Name, DCOLS, DROWS);
+ if (drv_generic_graphic_greet(buffer, NULL)) {
+ sleep(3);
+ drv_generic_graphic_clear();
+ }
+ }
+
+ /* register plugins */
+ AddFunction("LCD::backlight", 1, plugin_backlight);
+
+ return 0;
+}
+
+
+/* close driver & display */
+int drv_dpf_quit2(const int quiet)
+{
+ info("%s: shutting down.", Name);
+
+ /* clear display */
+ drv_generic_graphic_clear();
+
+ /* say goodbye... */
+ if (!quiet) {
+ drv_generic_graphic_greet("goodbye!", NULL);
+ }
+
+ drv_generic_graphic_quit();
+
+ debug("closing connection");
+ drv_dpf_close();
+
+ return (0);
+}
+
+
+DRIVER drv_DPF = {
+ .name = Name,
+ .list = drv_dpf_list,
+ .init = drv_dpf_init2,
+ .quit = drv_dpf_quit2,
+};
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