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 /* can't include file.h here */
  36 #ifndef MAX_PATH
  37 #define MAX_PATH 260
  38 #endif
  39
  40 /* extern functions, needed for screendump() */
  41 extern int sim_creat(const char *name, mode_t mode);
  42
  43 SDL_Surface* lcd_surface;
  44
  45 SDL_Color lcd_bl_color_dark    = {RED_CMP(LCD_BL_DARKCOLOR),
  46                                   GREEN_CMP(LCD_BL_DARKCOLOR),
  47                                   BLUE_CMP(LCD_BL_DARKCOLOR), 0};
  48 SDL_Color lcd_bl_color_bright  = {RED_CMP(LCD_BL_BRIGHTCOLOR),
  49                                   GREEN_CMP(LCD_BL_BRIGHTCOLOR),
  50                                   BLUE_CMP(LCD_BL_BRIGHTCOLOR), 0};
  51 SDL_Color lcd_color_dark    = {RED_CMP(LCD_DARKCOLOR),
  52                                GREEN_CMP(LCD_DARKCOLOR),
  53                                BLUE_CMP(LCD_DARKCOLOR), 0};
  54 SDL_Color lcd_color_bright  = {RED_CMP(LCD_BRIGHTCOLOR),
  55                                GREEN_CMP(LCD_BRIGHTCOLOR),
  56                                BLUE_CMP(LCD_BRIGHTCOLOR), 0};
  57
  58
  59 static unsigned long get_lcd_pixel(int x, int y)
  60 {
  61     return sim_lcd_framebuffer[y][x];
  62 }
  63
  64 void sim_lcd_update_rect(int x_start, int y_start, int width, int height)
  65 {
  66     sdl_update_rect(lcd_surface, x_start, y_start, width, height,
  67                     SIM_LCD_WIDTH, SIM_LCD_HEIGHT, get_lcd_pixel);
  68     sdl_gui_update(lcd_surface, x_start, y_start, width, height,
  69                    SIM_LCD_WIDTH, SIM_LCD_HEIGHT,
  70                    background ? UI_LCD_POSX : 0, background ? UI_LCD_POSY : 0);
  71 }
  72
  73 void lcd_update(void)
  74 {
  75     int x, y;
  76
  77     for (y = 0; y < lcd_pattern_count; y++)
  78         if (lcd_patterns[y].count > 0)
  79             sim_lcd_define_pattern(y, lcd_patterns[y].pattern);
  80
  81     for (y = 0; y < LCD_HEIGHT; y++)
  82         for (x = 0; x < LCD_WIDTH; x++)
  83             lcd_print_char(x, y, lcd_charbuffer[y][x]);
  84
  85     if (lcd_cursor.visible)
  86         lcd_print_char(lcd_cursor.x, lcd_cursor.y, lcd_cursor.hw_char);
  87
  88     sim_lcd_update_rect(0, ICON_HEIGHT, SIM_LCD_WIDTH,
  89                         LCD_HEIGHT*CHAR_HEIGHT*CHAR_PIXEL);
  90 }
  91
  92 #ifdef HAVE_BACKLIGHT
  93 void sim_backlight(int value)
  94 {
  95     if (value > 0) {
  96         sdl_set_gradient(lcd_surface, &lcd_bl_color_bright,
  97                          &lcd_bl_color_dark, 0, (1<<LCD_DEPTH));
  98     } else {
  99         sdl_set_gradient(lcd_surface, &lcd_color_bright,
 100                          &lcd_color_dark, 0, (1<<LCD_DEPTH));
 101     }
 102
 103     sim_lcd_update_rect(0, 0, SIM_LCD_WIDTH, SIM_LCD_HEIGHT);
 104 }
 105 #endif
 106
 107 /* initialise simulator lcd driver */
 108 void sim_lcd_init(void)
 109 {
 110     lcd_surface = SDL_CreateRGBSurface(SDL_SWSURFACE,
 111                                        SIM_LCD_WIDTH * display_zoom,
 112                                        SIM_LCD_HEIGHT * display_zoom,
 113                                        8, 0, 0, 0, 0);
 114
 115     sdl_set_gradient(lcd_surface, &lcd_bl_color_bright,
 116                      &lcd_bl_color_dark, 0, (1<<LCD_DEPTH));
 117 }
 118
 119 #define BMP_COMPRESSION 0 /* BI_RGB */
 120 #define BMP_NUMCOLORS (1 << LCD_DEPTH)
 121 #define BMP_BPP 1
 122 #define BMP_LINESIZE (((SIM_LCD_WIDTH + 31) / 32) * 4)
 123
 124 #define BMP_HEADERSIZE (54 + 4 * BMP_NUMCOLORS)
 125 #define BMP_DATASIZE   (BMP_LINESIZE * SIM_LCD_HEIGHT)
 126 #define BMP_TOTALSIZE  (BMP_HEADERSIZE + BMP_DATASIZE)
 127
 128 #define LE16_CONST(x) (x)&0xff, ((x)>>8)&0xff
 129 #define LE32_CONST(x) (x)&0xff, ((x)>>8)&0xff, ((x)>>16)&0xff, ((x)>>24)&0xff
 130
 131 static const unsigned char bmpheader[] =
 132 {
 133     0x42, 0x4d,                 /* 'BM' */
 134     LE32_CONST(BMP_TOTALSIZE),  /* Total file size */
 135     0x00, 0x00, 0x00, 0x00,     /* Reserved */
 136     LE32_CONST(BMP_HEADERSIZE), /* Offset to start of pixel data */
 137
 138     0x28, 0x00, 0x00, 0x00,     /* Size of (2nd) header */
 139     LE32_CONST(SIM_LCD_WIDTH),  /* Width in pixels */
 140     LE32_CONST(SIM_LCD_HEIGHT), /* Height in pixels */
 141     0x01, 0x00,                 /* Number of planes (always 1) */
 142     LE16_CONST(BMP_BPP),        /* Bits per pixel 1/4/8/16/24 */
 143     LE32_CONST(BMP_COMPRESSION),/* Compression mode */
 144     LE32_CONST(BMP_DATASIZE),   /* Size of bitmap data */
 145     0xc4, 0x0e, 0x00, 0x00,     /* Horizontal resolution (pixels/meter) */
 146     0xc4, 0x0e, 0x00, 0x00,     /* Vertical resolution (pixels/meter) */
 147     LE32_CONST(BMP_NUMCOLORS),  /* Number of used colours */
 148     LE32_CONST(BMP_NUMCOLORS),  /* Number of important colours */
 149
 150     BMP_COLOR(LCD_BL_BRIGHTCOLOR),
 151     BMP_COLOR(LCD_BL_DARKCOLOR)
 152 };
 153
 154 void screen_dump(void)
 155 {
 156     int fd;
 157     char filename[MAX_PATH];
 158     int x, y;
 159     static unsigned char line[BMP_LINESIZE];
 160
 161     create_numbered_filename(filename, "", "dump_", ".bmp", 4
 162         IF_CNFN_NUM_(, NULL));
 163     DEBUGF("screen_dump\n");
 164
 165     fd = sim_creat(filename, 0666);
 166     if (fd < 0)
 167         return;
 168
 169     write(fd, bmpheader, sizeof(bmpheader));
 170     SDL_LockSurface(lcd_surface);
 171
 172     /* BMP image goes bottom up */
 173     for (y = SIM_LCD_HEIGHT - 1; y >= 0; y--)
 174     {
 175         Uint8 *src = (Uint8 *)lcd_surface->pixels
 176                    + y * SIM_LCD_WIDTH * display_zoom * display_zoom;
 177         unsigned char *dst = line;
 178         unsigned dst_mask = 0x80;
 179
 180         memset(line, 0, sizeof(line));
 181         for (x = SIM_LCD_WIDTH; x > 0; x--)
 182         {
 183             if (*src)
 184                 *dst |= dst_mask;
 185             src += display_zoom;
 186             dst_mask >>= 1;
 187             if (dst_mask == 0)
 188             {
 189                 dst++;
 190                 dst_mask = 0x80;
 191             }
 192         }
 193         write(fd, line, sizeof(line));
 194     }
 195     SDL_UnlockSurface(lcd_surface);
 196     close(fd);
 197 }