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 "misc.h"
  26 #include <string.h>
  27 #include <unistd.h>
  28 #include <fcntl.h>
  29
  30 #include "lcd-playersim.h"
  31 #include "uisdl.h"
  32 #include "lcd-sdl.h"
  33
  34 /* extern functions, needed for screendump() */
  35 extern int sim_creat(const char *name);
  36
  37 SDL_Surface* lcd_surface;
  38 SDL_Color lcd_color_zero = {UI_LCD_BGCOLOR, 0};
  39 SDL_Color lcd_backlight_color_zero = {UI_LCD_BGCOLORLIGHT, 0};
  40 SDL_Color lcd_color_max  = {UI_LCD_FGCOLOR, 0};
  41 SDL_Color lcd_backlight_color_max = {UI_LCD_FGCOLORLIGHT, 0};
  42
  43
  44 static unsigned long get_lcd_pixel(int x, int y)
  45 {
  46     return sim_lcd_framebuffer[y][x];
  47 }
  48
  49 void sim_lcd_update_rect(int x_start, int y_start, int width, int height)
  50 {
  51     sdl_update_rect(lcd_surface, x_start, y_start, width, height,
  52                     SIM_LCD_WIDTH, SIM_LCD_HEIGHT, get_lcd_pixel);
  53     sdl_gui_update(lcd_surface, x_start, y_start, width, height,
  54                    SIM_LCD_WIDTH, SIM_LCD_HEIGHT,
  55                    background ? UI_LCD_POSX : 0, background ? UI_LCD_POSY : 0);
  56 }
  57
  58 void lcd_update(void)
  59 {
  60     int x, y;
  61
  62     for (y = 0; y < lcd_pattern_count; y++)
  63         if (lcd_patterns[y].count > 0)
  64             sim_lcd_define_pattern(y, lcd_patterns[y].pattern);
  65
  66     for (y = 0; y < LCD_HEIGHT; y++)
  67         for (x = 0; x < LCD_WIDTH; x++)
  68             lcd_print_char(x, y, lcd_charbuffer[y][x]);
  69
  70     if (lcd_cursor.visible)
  71         lcd_print_char(lcd_cursor.x, lcd_cursor.y, lcd_cursor.hw_char);
  72
  73     sim_lcd_update_rect(0, ICON_HEIGHT, SIM_LCD_WIDTH,
  74                         LCD_HEIGHT*CHAR_HEIGHT*CHAR_PIXEL);
  75 }
  76
  77 #ifdef HAVE_BACKLIGHT
  78 void sim_backlight(int value)
  79 {
  80     if (value > 0) {
  81         sdl_set_gradient(lcd_surface, &lcd_backlight_color_zero,
  82                                       &lcd_backlight_color_max,
  83                          0, (1<<LCD_DEPTH));
  84     } else {
  85         sdl_set_gradient(lcd_surface, &lcd_color_zero, &lcd_color_max,
  86                          0, (1<<LCD_DEPTH));
  87     }
  88
  89     sim_lcd_update_rect(0, 0, SIM_LCD_WIDTH, SIM_LCD_HEIGHT);
  90 }
  91 #endif
  92
  93 /* initialise simulator lcd driver */
  94 void sim_lcd_init(void)
  95 {
  96     lcd_surface = SDL_CreateRGBSurface(SDL_SWSURFACE,
  97                                        SIM_LCD_WIDTH * display_zoom,
  98                                        SIM_LCD_HEIGHT * display_zoom,
  99                                        8, 0, 0, 0, 0);
 100
 101     sdl_set_gradient(lcd_surface, &lcd_backlight_color_zero, &lcd_color_max,
 102                      0, (1<<LCD_DEPTH));
 103 }
 104
 105 #define BMP_COMPRESSION 0 /* BI_RGB */
 106 #define BMP_NUMCOLORS (1 << LCD_DEPTH)
 107 #define BMP_BPP 1
 108 #define BMP_LINESIZE (((SIM_LCD_WIDTH + 31) / 32) * 4)
 109
 110 #define BMP_HEADERSIZE (54 + 4 * BMP_NUMCOLORS)
 111 #define BMP_DATASIZE   (BMP_LINESIZE * SIM_LCD_HEIGHT)
 112 #define BMP_TOTALSIZE  (BMP_HEADERSIZE + BMP_DATASIZE)
 113
 114 #define LE16_CONST(x) (x)&0xff, ((x)>>8)&0xff
 115 #define LE32_CONST(x) (x)&0xff, ((x)>>8)&0xff, ((x)>>16)&0xff, ((x)>>24)&0xff
 116
 117 static const unsigned char bmpheader[] =
 118 {
 119     0x42, 0x4d,                 /* 'BM' */
 120     LE32_CONST(BMP_TOTALSIZE),  /* Total file size */
 121     0x00, 0x00, 0x00, 0x00,     /* Reserved */
 122     LE32_CONST(BMP_HEADERSIZE), /* Offset to start of pixel data */
 123
 124     0x28, 0x00, 0x00, 0x00,     /* Size of (2nd) header */
 125     LE32_CONST(SIM_LCD_WIDTH),  /* Width in pixels */
 126     LE32_CONST(SIM_LCD_HEIGHT), /* Height in pixels */
 127     0x01, 0x00,                 /* Number of planes (always 1) */
 128     LE16_CONST(BMP_BPP),        /* Bits per pixel 1/4/8/16/24 */
 129     LE32_CONST(BMP_COMPRESSION),/* Compression mode */
 130     LE32_CONST(BMP_DATASIZE),   /* Size of bitmap data */
 131     0xc4, 0x0e, 0x00, 0x00,     /* Horizontal resolution (pixels/meter) */
 132     0xc4, 0x0e, 0x00, 0x00,     /* Vertical resolution (pixels/meter) */
 133     LE32_CONST(BMP_NUMCOLORS),  /* Number of used colours */
 134     LE32_CONST(BMP_NUMCOLORS),  /* Number of important colours */
 135
 136     0x90, 0xee, 0x90, 0x00,     /* Colour #0 */
 137     0x00, 0x00, 0x00, 0x00      /* Colour #1 */
 138 };
 139
 140 void screen_dump(void)
 141 {
 142     int fd;
 143     char filename[MAX_PATH];
 144     int x, y;
 145     static unsigned char line[BMP_LINESIZE];
 146
 147     create_numbered_filename(filename, "", "dump_", ".bmp", 4
 148         IF_CNFN_NUM_(, NULL));
 149     DEBUGF("screen_dump\n");
 150
 151     fd = sim_creat(filename);
 152     if (fd < 0)
 153         return;
 154
 155     write(fd, bmpheader, sizeof(bmpheader));
 156     SDL_LockSurface(lcd_surface);
 157
 158     /* BMP image goes bottom up */
 159     for (y = SIM_LCD_HEIGHT - 1; y >= 0; y--)
 160     {
 161         Uint8 *src = (Uint8 *)lcd_surface->pixels
 162                    + y * SIM_LCD_WIDTH * display_zoom * display_zoom;
 163         unsigned char *dst = line;
 164         unsigned dst_mask = 0x80;
 165
 166         memset(line, 0, sizeof(line));
 167         for (x = SIM_LCD_WIDTH; x > 0; x--)
 168         {
 169             if (*src)
 170                 *dst |= dst_mask;
 171             src += display_zoom;
 172             dst_mask >>= 1;
 173             if (dst_mask == 0)
 174             {
 175                 dst++;
 176                 dst_mask = 0x80;
 177             }
 178         }
 179         write(fd, line, sizeof(line));
 180     }
 181     SDL_UnlockSurface(lcd_surface);
 182     close(fd);
 183 }