apps/plugins/grayscale.c

   1 /***************************************************************************
   2 *             __________               __   ___.
   3 *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
   4 *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
   5 *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
   6 *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
   7 *                     \/            \/     \/    \/            \/
   8 * $Id$
   9 *
  10 * Grayscale demo plugin
  11 *
  12 * Copyright (C) 2004 Jens Arnold
  13 *
  14 * All files in this archive are subject to the GNU General Public License.
  15 * See the file COPYING in the source tree root for full license agreement.
  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 "plugin.h"
  23 #include "helper.h"
  24
  25 #if defined(HAVE_LCD_BITMAP) && (LCD_DEPTH < 4)
  26 #include "gray.h"
  27
  28 PLUGIN_HEADER
  29
  30 /* variable button definitions */
  31 #if CONFIG_KEYPAD == RECORDER_PAD
  32 #define GRAYSCALE_SHIFT BUTTON_ON
  33 #define GRAYSCALE_UP BUTTON_UP
  34 #define GRAYSCALE_DOWN BUTTON_DOWN
  35 #define GRAYSCALE_LEFT BUTTON_LEFT
  36 #define GRAYSCALE_RIGHT BUTTON_RIGHT
  37 #define GRAYSCALE_OFF BUTTON_OFF
  38
  39 #elif CONFIG_KEYPAD == ONDIO_PAD
  40 #define GRAYSCALE_SHIFT BUTTON_MENU
  41 #define GRAYSCALE_UP BUTTON_UP
  42 #define GRAYSCALE_DOWN BUTTON_DOWN
  43 #define GRAYSCALE_LEFT BUTTON_LEFT
  44 #define GRAYSCALE_RIGHT BUTTON_RIGHT
  45 #define GRAYSCALE_OFF BUTTON_OFF
  46
  47 #elif CONFIG_KEYPAD == IRIVER_H100_PAD
  48 #define GRAYSCALE_SHIFT BUTTON_ON
  49 #define GRAYSCALE_UP BUTTON_UP
  50 #define GRAYSCALE_DOWN BUTTON_DOWN
  51 #define GRAYSCALE_LEFT BUTTON_LEFT
  52 #define GRAYSCALE_RIGHT BUTTON_RIGHT
  53 #define GRAYSCALE_OFF BUTTON_OFF
  54
  55 #define GRAYSCALE_RC_OFF BUTTON_RC_STOP
  56
  57 #elif (CONFIG_KEYPAD == IPOD_4G_PAD) || (CONFIG_KEYPAD == IPOD_3G_PAD) || \
  58       (CONFIG_KEYPAD == IPOD_1G2G_PAD)
  59 #define GRAYSCALE_SHIFT BUTTON_SELECT
  60 #define GRAYSCALE_UP BUTTON_SCROLL_BACK
  61 #define GRAYSCALE_DOWN BUTTON_SCROLL_FWD
  62 #define GRAYSCALE_LEFT BUTTON_LEFT
  63 #define GRAYSCALE_RIGHT BUTTON_RIGHT
  64 #define GRAYSCALE_OFF BUTTON_MENU
  65 #endif
  66
  67 #define GFX_HEIGHT (LCD_HEIGHT-8)
  68 #if LCD_WIDTH < 160
  69 #define GFX_GRAYTONE_WIDTH 86
  70 #define GFX_GRAYTONE_STEP 3
  71 #else
  72 #define GFX_GRAYTONE_WIDTH 128
  73 #define GFX_GRAYTONE_STEP 2
  74 #endif
  75 /******************************* Globals ***********************************/
  76
  77 static struct plugin_api* rb; /* global api struct pointer */
  78 static char pbuf[32];         /* global printf buffer */
  79 static unsigned char *gbuf;
  80 static size_t gbuf_size = 0;
  81
  82 /**************************** main function ********************************/
  83
  84 void cleanup(void *parameter)
  85 {
  86     (void)parameter;
  87
  88     gray_release(); /* switch off overlay and deinitialize */
  89     /* Turn on backlight timeout (revert to settings) */
  90     backlight_use_settings(); /* backlight control in lib/helper.c */
  91 }
  92
  93 /* this is only a demo of what the framework can do */
  94 int main(void)
  95 {
  96     int shades, time;
  97     int x, y, i;
  98     int button, scroll_amount;
  99     bool black_border = false;
 100
 101     static const unsigned char rockbox[] = {
 102     /* ...........................................
 103      * .####...###...###..#...#.####...###..#...#.
 104      * .#...#.#...#.#...#.#..#..#...#.#...#..#.#..
 105      * .####..#...#.#.....###...####..#...#...#...
 106      * .#..#..#...#.#...#.#..#..#...#.#...#..#.#..
 107      * .#...#..###...###..#...#.####...###..#...#.
 108      * ...........................................
 109      * 43 x 7 pixel, 1 bpp
 110      */
 111        0x00, 0x3E, 0x0A, 0x0A, 0x1A, 0x24, 0x00, 0x1C, 0x22, 0x22,
 112        0x22, 0x1C, 0x00, 0x1C, 0x22, 0x22, 0x22, 0x14, 0x00, 0x3E,
 113        0x08, 0x08, 0x14, 0x22, 0x00, 0x3E, 0x2A, 0x2A, 0x2A, 0x14,
 114        0x00, 0x1C, 0x22, 0x22, 0x22, 0x1C, 0x00, 0x22, 0x14, 0x08,
 115        0x14, 0x22, 0x00
 116     };
 117
 118     static const unsigned char showing[] = {
 119     /* .......................................
 120      * ..####.#...#..###..#...#.#.#...#..####.
 121      * .#.....#...#.#...#.#...#.#.##..#.#.....
 122      * ..###..#####.#...#.#.#.#.#.#.#.#.#..##.
 123      * .....#.#...#.#...#.#.#.#.#.#..##.#...#.
 124      * .####..#...#..###...#.#..#.#...#..####.
 125      * .......................................
 126      * 39 x 7 pixel, 1 bpp
 127      */
 128        0x00, 0x24, 0x2A, 0x2A, 0x2A, 0x12, 0x00, 0x3E, 0x08, 0x08,
 129        0x08, 0x3E, 0x00, 0x1C, 0x22, 0x22, 0x22, 0x1C, 0x00, 0x1E,
 130        0x20, 0x18, 0x20, 0x1E, 0x00, 0x3E, 0x00, 0x3E, 0x04, 0x08,
 131        0x10, 0x3E, 0x00, 0x1C, 0x22, 0x22, 0x2A, 0x3A, 0x00
 132     };
 133
 134     static const unsigned char grayscale_gray[] = {
 135     /* .......................................................
 136      * ..####.####...###..#...#..####..###...###..#.....#####.
 137      * .#.....#...#.#...#.#...#.#.....#...#.#...#.#.....#.....
 138      * .#..##.####..#####..#.#...###..#.....#####.#.....####..
 139      * .#...#.#..#..#...#...#.......#.#...#.#...#.#.....#.....
 140      * ..####.#...#.#...#...#...####...###..#...#.#####.#####.
 141      * .......................................................
 142      * 55 x 7 pixel, 8 bpp
 143      */
 144        110,110,110,110,110,110,110,110,110,110,110,110,110,110,110,110,
 145        110,110,110,110,110,110,110,110,110,110,110,110,110,110,110,110,
 146        110,110,110,110,110,110,110,110,110,110,110,110,110,110,110,110,
 147        110,110,110,110,110,110,110,
 148        120,120, 20, 20, 20, 20,120,222,222,222,222,120,120,120, 24, 24,
 149         24,120,120,226,120,120,120,226,120,120, 28, 28, 28, 28,120,120,
 150        230,230,230,120,120,120, 32, 32, 32,120,120,234,120,120,120,120,
 151        120, 36, 36, 36, 36, 36,120,
 152        130, 20,130,130,130,130,130,222,130,130,130,222,130, 24,130,130,
 153        130, 24,130,226,130,130,130,226,130, 28,130,130,130,130,130,230,
 154        130,130,130,230,130, 32,130,130,130, 32,130,234,130,130,130,130,
 155        130, 36,130,130,130,130,130,
 156        140, 20,140,140, 20, 20,140,222,222,222,222,140,140, 24, 24, 24,
 157         24, 24,140,140,226,140,226,140,140,140, 28, 28, 28,140,140,230,
 158        140,140,140,140,140, 32, 32, 32, 32, 32,140,234,140,140,140,140,
 159        140, 36, 36, 36, 36,140,140,
 160        130, 20,130,130,130, 20,130,222,130,130,222,130,130, 24,130,130,
 161        130, 24,130,130,130,226,130,130,130,130,130,130,130, 28,130,230,
 162        130,130,130,230,130, 32,130,130,130, 32,130,234,130,130,130,130,
 163        130, 36,130,130,130,130,130,
 164        120,120, 20, 20, 20, 20,120,222,120,120,120,222,120, 24,120,120,
 165        120, 24,120,120,120,226,120,120,120, 28, 28, 28, 28,120,120,120,
 166        230,230,230,120,120, 32,120,120,120, 32,120,234,234,234,234,234,
 167        120, 36, 36, 36, 36, 36,120,
 168        110,110,110,110,110,110,110,110,110,110,110,110,110,110,110,110,
 169        110,110,110,110,110,110,110,110,110,110,110,110,110,110,110,110,
 170        110,110,110,110,110,110,110,110,110,110,110,110,110,110,110,110,
 171        110,110,110,110,110,110,110
 172     };
 173
 174     /* Turn off backlight timeout */
 175     backlight_force_on(); /* backlight control in lib/helper.c */
 176
 177     rb->lcd_setfont(FONT_SYSFIXED);   /* select default font */
 178
 179     /* get the remainder of the plugin buffer */
 180     gbuf = (unsigned char *) rb->plugin_get_buffer(&gbuf_size);
 181
 182     /* initialize the greyscale buffer:
 183        Archos: 112 pixels wide, 7 rows (56 pixels) high, (try to) reserve
 184        32 bitplanes for 33 shades of grey.
 185        H1x0: 160 pixels wide, 30 rows (120 pixels) high, (try to) reserve
 186        32 bitplanes for 33 shades of grey. */
 187     shades = gray_init(rb, gbuf, gbuf_size, true, LCD_WIDTH, GFX_HEIGHT,
 188                        32, 0, NULL) + 1;
 189
 190     /* place greyscale overlay 1 row down */
 191     gray_set_position(0, 8);
 192
 193     rb->snprintf(pbuf, sizeof(pbuf), "Shades: %d", shades);
 194     rb->lcd_puts(0, 0, pbuf);
 195     rb->lcd_update();
 196
 197 #ifdef HAVE_ADJUSTABLE_CPU_FREQ
 198     rb->cpu_boost(true);
 199 #endif
 200     gray_show(true);          /* switch on greyscale overlay */
 201
 202     time = *rb->current_tick; /* start time measurement */
 203
 204     gray_set_background(150);
 205     gray_clear_display();     /* fill everything with grey 150 */
 206
 207     /* draw a dark grey line star background */
 208     gray_set_foreground(80);
 209     for (y = 0; y < GFX_HEIGHT; y += 8)                   /* horizontal part */
 210     {
 211         gray_drawline(0, y, (LCD_WIDTH-1), (GFX_HEIGHT-1) - y); /*grey lines */
 212     }
 213     for (x = 10; x <= LCD_WIDTH; x += 10)                    /* vertical part */
 214     {
 215         gray_drawline(x, 0, (LCD_WIDTH-1) - x, (GFX_HEIGHT-1)); /*grey lines */
 216     }
 217
 218     gray_set_foreground(0);
 219     gray_drawrect(0, 0, LCD_WIDTH, GFX_HEIGHT);   /* black border */
 220
 221     /* draw grey tones */
 222     for (i = 0; i < GFX_GRAYTONE_WIDTH; i++)
 223     {
 224         x = ((LCD_WIDTH-GFX_GRAYTONE_WIDTH)/2) + i;
 225         gray_set_foreground(GFX_GRAYTONE_STEP * i);
 226         /* vertical lines */
 227         gray_vline(x, (GFX_HEIGHT/8), (GFX_HEIGHT-GFX_HEIGHT/8-1));
 228     }
 229
 230     gray_set_drawmode(DRMODE_COMPLEMENT);
 231     /* invert rectangle (lower half) */
 232     gray_fillrect((LCD_WIDTH-GFX_GRAYTONE_WIDTH)/2, (GFX_HEIGHT/2+1),
 233                   GFX_GRAYTONE_WIDTH, (GFX_HEIGHT/2-GFX_HEIGHT/8-1));
 234     /* invert a line */
 235     gray_hline((LCD_WIDTH-GFX_GRAYTONE_WIDTH)/2,
 236                (LCD_WIDTH+GFX_GRAYTONE_WIDTH)/2, (GFX_HEIGHT/2-1));
 237
 238     /* show bitmaps (1 bit and 8 bit) */
 239     /* opaque */
 240     gray_set_drawinfo(DRMODE_SOLID, 255, 100);
 241     gray_mono_bitmap(rockbox,
 242                      MAX((LCD_WIDTH/2-47), ((LCD_WIDTH-GFX_GRAYTONE_WIDTH)/2)),
 243                      (5*GFX_HEIGHT/16-4), 43, 7);
 244     /* transparent */
 245     gray_set_drawinfo(DRMODE_FG, 0, 100);
 246     gray_mono_bitmap(showing, (LCD_WIDTH/2+4) , (5*GFX_HEIGHT/16-4), 39, 7);
 247     /* greyscale */
 248     gray_gray_bitmap(grayscale_gray, ((LCD_WIDTH-55)/2), (11*GFX_HEIGHT/16-4),
 249                      55, 7);
 250
 251     gray_update();
 252
 253     time = *rb->current_tick - time;  /* end time measurement */
 254
 255     rb->snprintf(pbuf, sizeof(pbuf), "Shades: %d, %d.%02ds", shades,
 256                  time / 100, time % 100);
 257     rb->lcd_puts(0, 0, pbuf);
 258     gray_deferred_lcd_update();       /* schedule an lcd_update() */
 259 #ifdef HAVE_ADJUSTABLE_CPU_FREQ
 260     rb->cpu_boost(false);
 261 #endif
 262
 263     /* drawing is now finished, play around with scrolling
 264      * until you press OFF or connect USB
 265      */
 266     gray_set_background(255);
 267     while (true)
 268     {
 269         scroll_amount = 1;
 270
 271         button = rb->button_get(true);
 272
 273         if (rb->default_event_handler_ex(button, cleanup, NULL)
 274             == SYS_USB_CONNECTED)
 275             return PLUGIN_USB_CONNECTED;
 276
 277         if (button & GRAYSCALE_SHIFT)
 278         {
 279             if (!black_border)
 280             {
 281                 gray_set_background(0);
 282                 black_border = true;
 283             }
 284         }
 285         else
 286         {
 287             if (black_border)
 288             {
 289                 gray_set_background(255);
 290                 black_border = false;
 291             }
 292         }
 293
 294         if (button & BUTTON_REPEAT)
 295             scroll_amount = 4;
 296
 297         switch (button & ~(GRAYSCALE_SHIFT | BUTTON_REPEAT))
 298         {
 299             case GRAYSCALE_LEFT:
 300
 301                 gray_scroll_left(scroll_amount);  /* scroll left */
 302                 gray_update();
 303                 break;
 304
 305             case GRAYSCALE_RIGHT:
 306
 307                 gray_scroll_right(scroll_amount); /* scroll right */
 308                 gray_update();
 309                 break;
 310
 311             case GRAYSCALE_UP:
 312
 313                 gray_scroll_up(scroll_amount);    /* scroll up */
 314                 gray_update();
 315                 break;
 316
 317             case GRAYSCALE_DOWN:
 318
 319                 gray_scroll_down(scroll_amount);  /* scroll down */
 320                 gray_update();
 321                 break;
 322 #ifdef GRAYSCALE_RC_OFF
 323             case GRAYSCALE_RC_OFF:
 324 #endif
 325             case GRAYSCALE_OFF:
 326
 327                 cleanup(NULL);
 328                 return PLUGIN_OK;
 329         }
 330     }
 331 }
 332
 333 /*************************** Plugin entry point ****************************/
 334
 335 enum plugin_status plugin_start(struct plugin_api* api, void* parameter)
 336 {
 337     rb = api; /* copy to global api pointer */
 338     (void)parameter;
 339
 340     return main();
 341 }
 342
 343 #endif /* #ifdef HAVE_LCD_BITMAP */
 344