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  * All files in this archive are subject to the GNU General Public License.
  13  * See the file COPYING in the source tree root for full license agreement.
  14  *
  15  * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
  16  * KIND, either express or implied.
  17  *
  18  ****************************************************************************/
  19
  20 #include "debug.h"
  21 #include "lcd.h"
  22 #include "lcd-charcell.h"
  23 #include "misc.h"
  24 #include <string.h>
  25 #include <unistd.h>
  26 #include <fcntl.h>
  27
  28 #include "lcd-playersim.h"
  29 #include "uisdl.h"
  30 #include "lcd-sdl.h"
  31
  32 /* extern functions, needed for screendump() */
  33 extern int sim_creat(const char *name);
  34
  35 SDL_Surface* lcd_surface;
  36 SDL_Color lcd_color_zero = {UI_LCD_BGCOLOR, 0};
  37 SDL_Color lcd_backlight_color_zero = {UI_LCD_BGCOLORLIGHT, 0};
  38 SDL_Color lcd_color_max  = {0, 0, 0, 0};
  39
  40
  41 static unsigned long get_lcd_pixel(int x, int y)
  42 {
  43     return sim_lcd_framebuffer[y][x];
  44 }
  45
  46 void sim_lcd_update_rect(int x_start, int y_start, int width, int height)
  47 {
  48     sdl_update_rect(lcd_surface, x_start, y_start, width, height,
  49                     SIM_LCD_WIDTH, SIM_LCD_HEIGHT, get_lcd_pixel);
  50     sdl_gui_update(lcd_surface, x_start, y_start, width, height,
  51                    SIM_LCD_WIDTH, SIM_LCD_HEIGHT,
  52                    background ? UI_LCD_POSX : 0, background ? UI_LCD_POSY : 0);
  53 }
  54
  55 void lcd_update(void)
  56 {
  57     int x, y;
  58
  59     for (y = 0; y < lcd_pattern_count; y++)
  60         if (lcd_patterns[y].count > 0)
  61             sim_lcd_define_pattern(y, lcd_patterns[y].pattern);
  62
  63     for (y = 0; y < LCD_HEIGHT; y++)
  64         for (x = 0; x < LCD_WIDTH; x++)
  65             lcd_print_char(x, y, lcd_charbuffer[y][x]);
  66
  67     if (lcd_cursor.visible)
  68         lcd_print_char(lcd_cursor.x, lcd_cursor.y, lcd_cursor.hw_char);
  69
  70     sim_lcd_update_rect(0, ICON_HEIGHT, SIM_LCD_WIDTH,
  71                         LCD_HEIGHT*CHAR_HEIGHT*CHAR_PIXEL);
  72 }
  73
  74 #ifdef HAVE_BACKLIGHT
  75 void sim_backlight(int value)
  76 {
  77     if (value > 0) {
  78         sdl_set_gradient(lcd_surface, &lcd_backlight_color_zero, &lcd_color_max,
  79                          0, (1<<LCD_DEPTH));
  80     } else {
  81         sdl_set_gradient(lcd_surface, &lcd_color_zero, &lcd_color_max,
  82                          0, (1<<LCD_DEPTH));
  83     }
  84
  85     sim_lcd_update_rect(0, 0, SIM_LCD_WIDTH, SIM_LCD_HEIGHT);
  86 }
  87 #endif
  88
  89 /* initialise simulator lcd driver */
  90 void sim_lcd_init(void)
  91 {
  92     lcd_surface = SDL_CreateRGBSurface(SDL_SWSURFACE,
  93                                        SIM_LCD_WIDTH * display_zoom,
  94                                        SIM_LCD_HEIGHT * display_zoom,
  95                                        8, 0, 0, 0, 0);
  96
  97     sdl_set_gradient(lcd_surface, &lcd_backlight_color_zero, &lcd_color_max,
  98                      0, (1<<LCD_DEPTH));
  99 }
 100
 101 #define BMP_COMPRESSION 0 /* BI_RGB */
 102 #define BMP_NUMCOLORS (1 << LCD_DEPTH)
 103 #define BMP_BPP 1
 104 #define BMP_LINESIZE (((SIM_LCD_WIDTH + 31) / 32) * 4)
 105
 106 #define BMP_HEADERSIZE (54 + 4 * BMP_NUMCOLORS)
 107 #define BMP_DATASIZE   (BMP_LINESIZE * SIM_LCD_HEIGHT)
 108 #define BMP_TOTALSIZE  (BMP_HEADERSIZE + BMP_DATASIZE)
 109
 110 #define LE16_CONST(x) (x)&0xff, ((x)>>8)&0xff
 111 #define LE32_CONST(x) (x)&0xff, ((x)>>8)&0xff, ((x)>>16)&0xff, ((x)>>24)&0xff
 112
 113 static const unsigned char bmpheader[] =
 114 {
 115     0x42, 0x4d,                 /* 'BM' */
 116     LE32_CONST(BMP_TOTALSIZE),  /* Total file size */
 117     0x00, 0x00, 0x00, 0x00,     /* Reserved */
 118     LE32_CONST(BMP_HEADERSIZE), /* Offset to start of pixel data */
 119
 120     0x28, 0x00, 0x00, 0x00,     /* Size of (2nd) header */
 121     LE32_CONST(SIM_LCD_WIDTH),  /* Width in pixels */
 122     LE32_CONST(SIM_LCD_HEIGHT), /* Height in pixels */
 123     0x01, 0x00,                 /* Number of planes (always 1) */
 124     LE16_CONST(BMP_BPP),        /* Bits per pixel 1/4/8/16/24 */
 125     LE32_CONST(BMP_COMPRESSION),/* Compression mode */
 126     LE32_CONST(BMP_DATASIZE),   /* Size of bitmap data */
 127     0xc4, 0x0e, 0x00, 0x00,     /* Horizontal resolution (pixels/meter) */
 128     0xc4, 0x0e, 0x00, 0x00,     /* Vertical resolution (pixels/meter) */
 129     LE32_CONST(BMP_NUMCOLORS),  /* Number of used colours */
 130     LE32_CONST(BMP_NUMCOLORS),  /* Number of important colours */
 131
 132     0x90, 0xee, 0x90, 0x00,     /* Colour #0 */
 133     0x00, 0x00, 0x00, 0x00      /* Colour #1 */
 134 };
 135
 136 void screen_dump(void)
 137 {
 138     int fd;
 139     char filename[MAX_PATH];
 140     int x, y;
 141     static unsigned char line[BMP_LINESIZE];
 142
 143     create_numbered_filename(filename, "", "dump_", ".bmp", 4
 144         IF_CNFN_NUM_(, NULL));
 145     DEBUGF("screen_dump\n");
 146
 147     fd = sim_creat(filename);
 148     if (fd < 0)
 149         return;
 150
 151     write(fd, bmpheader, sizeof(bmpheader));
 152     SDL_LockSurface(lcd_surface);
 153
 154     /* BMP image goes bottom up */
 155     for (y = SIM_LCD_HEIGHT - 1; y >= 0; y--)
 156     {
 157         Uint8 *src = (Uint8 *)lcd_surface->pixels
 158                    + y * SIM_LCD_WIDTH * display_zoom * display_zoom;
 159         unsigned char *dst = line;
 160         unsigned dst_mask = 0x80;
 161
 162         memset(line, 0, sizeof(line));
 163         for (x = SIM_LCD_WIDTH; x > 0; x--)
 164         {
 165             if (*src)
 166                 *dst |= dst_mask;
 167             src += display_zoom;
 168             dst_mask >>= 1;
 169             if (dst_mask == 0)
 170             {
 171                 dst++;
 172                 dst_mask = 0x80;
 173             }
 174         }
 175         write(fd, line, sizeof(line));
 176     }
 177     SDL_UnlockSurface(lcd_surface);
 178     close(fd);
 179 }