uisimulator/sdl/lcd-charcells.c

   1 /***************************************************************************
   2  *             __________               __   ___.
   3  *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
   4  *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
   5  *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
   6  *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
   7  *                     \/            \/     \/    \/            \/
   8  * $Id$
   9  *
  10  * Copyright (C) 2006 Dan Everton
  11  *
  12  * This program is free software; you can redistribute it and/or
  13  * modify it under the terms of the GNU General Public License
  14  * as published by the Free Software Foundation; either version 2
  15  * of the License, or (at your option) any later version.
  16  *
  17  * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
  18  * KIND, either express or implied.
  19  *
  20  ****************************************************************************/
  21
  22 #include "debug.h"
  23 #include "lcd.h"
  24 #include "lcd-charcell.h"
  25 #include "screendump.h"
  26 #include "general.h"
  27 #include <string.h>
  28 #include <unistd.h>
  29 #include <fcntl.h>
  30
  31 #include "lcd-playersim.h"
  32 #include "uisdl.h"
  33 #include "lcd-sdl.h"
  34
  35 /* extern functions, needed for screendump() */
  36 extern int sim_creat(const char *name);
  37
  38 SDL_Surface* lcd_surface;
  39
  40 SDL_Color lcd_bl_color_dark    = {RED_CMP(LCD_BL_DARKCOLOR),
  41                                   GREEN_CMP(LCD_BL_DARKCOLOR),
  42                                   BLUE_CMP(LCD_BL_DARKCOLOR), 0};
  43 SDL_Color lcd_bl_color_bright  = {RED_CMP(LCD_BL_BRIGHTCOLOR),
  44                                   GREEN_CMP(LCD_BL_BRIGHTCOLOR),
  45                                   BLUE_CMP(LCD_BL_BRIGHTCOLOR), 0};
  46 SDL_Color lcd_color_dark    = {RED_CMP(LCD_DARKCOLOR),
  47                                GREEN_CMP(LCD_DARKCOLOR),
  48                                BLUE_CMP(LCD_DARKCOLOR), 0};
  49 SDL_Color lcd_color_bright  = {RED_CMP(LCD_BRIGHTCOLOR),
  50                                GREEN_CMP(LCD_BRIGHTCOLOR),
  51                                BLUE_CMP(LCD_BRIGHTCOLOR), 0};
  52
  53
  54 static unsigned long get_lcd_pixel(int x, int y)
  55 {
  56     return sim_lcd_framebuffer[y][x];
  57 }
  58
  59 void sim_lcd_update_rect(int x_start, int y_start, int width, int height)
  60 {
  61     sdl_update_rect(lcd_surface, x_start, y_start, width, height,
  62                     SIM_LCD_WIDTH, SIM_LCD_HEIGHT, get_lcd_pixel);
  63     sdl_gui_update(lcd_surface, x_start, y_start, width, height,
  64                    SIM_LCD_WIDTH, SIM_LCD_HEIGHT,
  65                    background ? UI_LCD_POSX : 0, background ? UI_LCD_POSY : 0);
  66 }
  67
  68 void lcd_update(void)
  69 {
  70     int x, y;
  71
  72     for (y = 0; y < lcd_pattern_count; y++)
  73         if (lcd_patterns[y].count > 0)
  74             sim_lcd_define_pattern(y, lcd_patterns[y].pattern);
  75
  76     for (y = 0; y < LCD_HEIGHT; y++)
  77         for (x = 0; x < LCD_WIDTH; x++)
  78             lcd_print_char(x, y, lcd_charbuffer[y][x]);
  79
  80     if (lcd_cursor.visible)
  81         lcd_print_char(lcd_cursor.x, lcd_cursor.y, lcd_cursor.hw_char);
  82
  83     sim_lcd_update_rect(0, ICON_HEIGHT, SIM_LCD_WIDTH,
  84                         LCD_HEIGHT*CHAR_HEIGHT*CHAR_PIXEL);
  85 }
  86
  87 #ifdef HAVE_BACKLIGHT
  88 void sim_backlight(int value)
  89 {
  90     if (value > 0) {
  91         sdl_set_gradient(lcd_surface, &lcd_bl_color_bright,
  92                          &lcd_bl_color_dark, 0, (1<<LCD_DEPTH));
  93     } else {
  94         sdl_set_gradient(lcd_surface, &lcd_color_bright,
  95                          &lcd_color_dark, 0, (1<<LCD_DEPTH));
  96     }
  97
  98     sim_lcd_update_rect(0, 0, SIM_LCD_WIDTH, SIM_LCD_HEIGHT);
  99 }
 100 #endif
 101
 102 /* initialise simulator lcd driver */
 103 void sim_lcd_init(void)
 104 {
 105     lcd_surface = SDL_CreateRGBSurface(SDL_SWSURFACE,
 106                                        SIM_LCD_WIDTH * display_zoom,
 107                                        SIM_LCD_HEIGHT * display_zoom,
 108                                        8, 0, 0, 0, 0);
 109
 110     sdl_set_gradient(lcd_surface, &lcd_bl_color_bright,
 111                      &lcd_bl_color_dark, 0, (1<<LCD_DEPTH));
 112 }
 113
 114 #define BMP_COMPRESSION 0 /* BI_RGB */
 115 #define BMP_NUMCOLORS (1 << LCD_DEPTH)
 116 #define BMP_BPP 1
 117 #define BMP_LINESIZE (((SIM_LCD_WIDTH + 31) / 32) * 4)
 118
 119 #define BMP_HEADERSIZE (54 + 4 * BMP_NUMCOLORS)
 120 #define BMP_DATASIZE   (BMP_LINESIZE * SIM_LCD_HEIGHT)
 121 #define BMP_TOTALSIZE  (BMP_HEADERSIZE + BMP_DATASIZE)
 122
 123 #define LE16_CONST(x) (x)&0xff, ((x)>>8)&0xff
 124 #define LE32_CONST(x) (x)&0xff, ((x)>>8)&0xff, ((x)>>16)&0xff, ((x)>>24)&0xff
 125
 126 static const unsigned char bmpheader[] =
 127 {
 128     0x42, 0x4d,                 /* 'BM' */
 129     LE32_CONST(BMP_TOTALSIZE),  /* Total file size */
 130     0x00, 0x00, 0x00, 0x00,     /* Reserved */
 131     LE32_CONST(BMP_HEADERSIZE), /* Offset to start of pixel data */
 132
 133     0x28, 0x00, 0x00, 0x00,     /* Size of (2nd) header */
 134     LE32_CONST(SIM_LCD_WIDTH),  /* Width in pixels */
 135     LE32_CONST(SIM_LCD_HEIGHT), /* Height in pixels */
 136     0x01, 0x00,                 /* Number of planes (always 1) */
 137     LE16_CONST(BMP_BPP),        /* Bits per pixel 1/4/8/16/24 */
 138     LE32_CONST(BMP_COMPRESSION),/* Compression mode */
 139     LE32_CONST(BMP_DATASIZE),   /* Size of bitmap data */
 140     0xc4, 0x0e, 0x00, 0x00,     /* Horizontal resolution (pixels/meter) */
 141     0xc4, 0x0e, 0x00, 0x00,     /* Vertical resolution (pixels/meter) */
 142     LE32_CONST(BMP_NUMCOLORS),  /* Number of used colours */
 143     LE32_CONST(BMP_NUMCOLORS),  /* Number of important colours */
 144
 145     BMP_COLOR(LCD_BL_BRIGHTCOLOR),
 146     BMP_COLOR(LCD_BL_DARKCOLOR)
 147 };
 148
 149 void screen_dump(void)
 150 {
 151     int fd;
 152     char filename[MAX_PATH];
 153     int x, y;
 154     static unsigned char line[BMP_LINESIZE];
 155
 156     create_numbered_filename(filename, "", "dump_", ".bmp", 4
 157         IF_CNFN_NUM_(, NULL));
 158     DEBUGF("screen_dump\n");
 159
 160     fd = sim_creat(filename);
 161     if (fd < 0)
 162         return;
 163
 164     write(fd, bmpheader, sizeof(bmpheader));
 165     SDL_LockSurface(lcd_surface);
 166
 167     /* BMP image goes bottom up */
 168     for (y = SIM_LCD_HEIGHT - 1; y >= 0; y--)
 169     {
 170         Uint8 *src = (Uint8 *)lcd_surface->pixels
 171                    + y * SIM_LCD_WIDTH * display_zoom * display_zoom;
 172         unsigned char *dst = line;
 173         unsigned dst_mask = 0x80;
 174
 175         memset(line, 0, sizeof(line));
 176         for (x = SIM_LCD_WIDTH; x > 0; x--)
 177         {
 178             if (*src)
 179                 *dst |= dst_mask;
 180             src += display_zoom;
 181             dst_mask >>= 1;
 182             if (dst_mask == 0)
 183             {
 184                 dst++;
 185                 dst_mask = 0x80;
 186             }
 187         }
 188         write(fd, line, sizeof(line));
 189     }
 190     SDL_UnlockSurface(lcd_surface);
 191     close(fd);
 192 }