apps/plugins/matrix.c

   1 /***************************************************************************
   2  *             __________               __   ___.
   3  *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
   4  *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
   5  *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
   6  *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
   7  *                     \/            \/     \/    \/            \/
   8  * $Id$
   9  *
  10  * Copyright (C) 1999 Chris Allegretta
  11  * Copyright (C) 2005 Alastair S - ported to podzilla
  12  * Copyright (C) 2005 Jonas Häggqvist - ported to rockbox
  13  *
  14  *
  15  * This program is free software; you can redistribute it and/or
  16  * modify it under the terms of the GNU General Public License
  17  * as published by the Free Software Foundation; either version 2
  18  * of the License, or (at your option) any later version.
  19  *
  20  * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
  21  * KIND, either express or implied.
  22  *
  23  ****************************************************************************/
  24
  25 /*
  26  * TODO:
  27  *  - The font is a bit large, create smaller one
  28  *  - For colour/greyscale displays, the font from the xscreensaver xmatrix
  29  *    should be converted and used
  30  * BUGS:
  31  *  - The animation "dies" after a few seconds, not sure why. Works in sim.
  32  *  Symtom Fixed Oct 2007 GRaTT (Gerritt Gonzales)
  33  */
  34
  35
  36 #include "plugin.h"
  37 PLUGIN_HEADER
  38
  39 /* Images */
  40 #define MAXCHARS 27 - 1
  41 extern const fb_data matrix_bold[];
  42 extern const fb_data matrix_normal[];
  43 #define COL_W 14
  44 #define COL_H 15
  45
  46 #define COLS LCD_WIDTH/COL_W
  47 #define ROWS LCD_HEIGHT/COL_H
  48
  49 #define LEFTMARGIN (LCD_WIDTH-(COLS*COL_W))/2
  50 #define TOPMARGIN  (LCD_HEIGHT-(ROWS*COL_H))/2
  51
  52 #if (CONFIG_KEYPAD == IPOD_4G_PAD) || \
  53       (CONFIG_KEYPAD == IPOD_3G_PAD) || \
  54       (CONFIG_KEYPAD == IPOD_1G2G_PAD)
  55 #define MATRIX_EXIT BUTTON_MENU
  56 #define MATRIX_SLEEP_MORE BUTTON_SCROLL_BACK|BUTTON_REPEAT
  57 #define MATRIX_SLEEP_LESS BUTTON_SCROLL_FWD|BUTTON_REPEAT
  58 #define MATRIX_PAUSE BUTTON_PLAY
  59
  60 #elif (CONFIG_KEYPAD == IRIVER_H100_PAD) || \
  61       (CONFIG_KEYPAD == IRIVER_H300_PAD)
  62 #define MATRIX_EXIT BUTTON_OFF
  63 #define MATRIX_SLEEP_MORE BUTTON_UP
  64 #define MATRIX_SLEEP_LESS BUTTON_DOWN
  65 #define MATRIX_PAUSE BUTTON_SELECT
  66
  67 #elif (CONFIG_KEYPAD == IRIVER_H10_PAD)
  68 #define MATRIX_EXIT BUTTON_POWER
  69 #define MATRIX_SLEEP_MORE BUTTON_SCROLL_UP|BUTTON_REPEAT
  70 #define MATRIX_SLEEP_LESS BUTTON_SCROLL_DOWN|BUTTON_REPEAT
  71 #define MATRIX_PAUSE BUTTON_PLAY
  72
  73 #elif (CONFIG_KEYPAD == IAUDIO_X5M5_PAD)
  74 #define MATRIX_EXIT BUTTON_POWER
  75 #define MATRIX_SLEEP_MORE BUTTON_UP
  76 #define MATRIX_SLEEP_LESS BUTTON_DOWN
  77 #define MATRIX_PAUSE BUTTON_PLAY
  78
  79 #elif (CONFIG_KEYPAD == GIGABEAT_PAD)
  80 #define MATRIX_EXIT BUTTON_POWER
  81 #define MATRIX_SLEEP_MORE BUTTON_UP
  82 #define MATRIX_SLEEP_LESS BUTTON_DOWN
  83 #define MATRIX_PAUSE BUTTON_SELECT
  84
  85 #elif CONFIG_KEYPAD == SANSA_E200_PAD
  86 #define MATRIX_EXIT BUTTON_POWER
  87 #define MATRIX_SLEEP_MORE BUTTON_SCROLL_BACK|BUTTON_REPEAT
  88 #define MATRIX_SLEEP_LESS BUTTON_SCROLL_FWD|BUTTON_REPEAT
  89 #define MATRIX_PAUSE BUTTON_SELECT
  90
  91 #elif CONFIG_KEYPAD == SANSA_FUZE_PAD
  92 #define MATRIX_EXIT         (BUTTON_HOME|BUTTON_REPEAT)
  93 #define MATRIX_SLEEP_MORE   BUTTON_SCROLL_BACK|BUTTON_REPEAT
  94 #define MATRIX_SLEEP_LESS   BUTTON_SCROLL_FWD|BUTTON_REPEAT
  95 #define MATRIX_PAUSE        BUTTON_SELECT
  96
  97 #elif CONFIG_KEYPAD == SANSA_C200_PAD
  98 #define MATRIX_EXIT BUTTON_POWER
  99 #define MATRIX_SLEEP_MORE BUTTON_UP
 100 #define MATRIX_SLEEP_LESS BUTTON_DOWN
 101 #define MATRIX_PAUSE BUTTON_SELECT
 102
 103 #elif (CONFIG_KEYPAD == GIGABEAT_S_PAD)
 104 #define MATRIX_EXIT BUTTON_BACK
 105 #define MATRIX_SLEEP_MORE BUTTON_UP
 106 #define MATRIX_SLEEP_LESS BUTTON_DOWN
 107 #define MATRIX_PAUSE BUTTON_SELECT
 108
 109 #elif CONFIG_KEYPAD == IAUDIO_M3_PAD
 110 #define MATRIX_EXIT BUTTON_RC_REC
 111 #define MATRIX_SLEEP_MORE BUTTON_RC_VOL_UP
 112 #define MATRIX_SLEEP_LESS BUTTON_RC_VOL_DOWN
 113 #define MATRIX_PAUSE BUTTON_RC_PLAY
 114
 115 #elif (CONFIG_KEYPAD == COWOND2_PAD)
 116 #define MATRIX_EXIT BUTTON_POWER
 117
 118 #elif CONFIG_KEYPAD == IAUDIO67_PAD
 119 #define MATRIX_EXIT BUTTON_POWER
 120 #define MATRIX_SLEEP_MORE BUTTON_VOLUP
 121 #define MATRIX_SLEEP_LESS BUTTON_VOLDOWN
 122 #define MATRIX_PAUSE BUTTON_PLAY
 123
 124 #elif CONFIG_KEYPAD == CREATIVEZVM_PAD
 125 #define MATRIX_EXIT BUTTON_BACK
 126 #define MATRIX_SLEEP_MORE BUTTON_UP
 127 #define MATRIX_SLEEP_LESS BUTTON_DOWN
 128 #define MATRIX_PAUSE BUTTON_PLAY
 129
 130 #elif CONFIG_KEYPAD == PHILIPS_HDD1630_PAD
 131 #define MATRIX_EXIT BUTTON_POWER
 132 #define MATRIX_SLEEP_MORE BUTTON_UP
 133 #define MATRIX_SLEEP_LESS BUTTON_DOWN
 134 #define MATRIX_PAUSE BUTTON_SELECT
 135
 136 #elif (CONFIG_KEYPAD == ONDAVX747_PAD) || CONFIG_KEYPAD == MROBE500_PAD
 137 #define MATRIX_EXIT BUTTON_POWER
 138
 139 #else
 140 #error Unsupported keypad
 141 #endif
 142
 143 #ifdef HAVE_TOUCHSCREEN
 144 #ifndef MATRIX_EXIT
 145 #define MATRIX_EXIT       BUTTON_TOPLEFT
 146 #endif
 147 #ifndef MATRIX_SLEEP_MORE
 148 #define MATRIX_SLEEP_MORE BUTTON_MIDRIGHT
 149 #endif
 150 #ifndef MATRIX_SLEEP_LESS
 151 #define MATRIX_SLEEP_LESS BUTTON_MIDLEFT
 152 #endif
 153 #ifndef MATRIX_PAUSE
 154 #define MATRIX_PAUSE      BUTTON_CENTER
 155 #endif
 156 #endif
 157
 158 #define SLEEP HZ/50
 159
 160 /* Each position is of this type */
 161 typedef struct cmatrix {
 162     int val;
 163     int bold;
 164 } cmatrix;
 165
 166 /* The matrix - who'd have guessed it was just a few hundred bytes? */
 167 static cmatrix matrix[ROWS][COLS];
 168 static int length[COLS];
 169 static int spaces[COLS];
 170 static int updates[COLS];
 171
 172 static void matrix_init(void) {
 173     int i,j;
 174
 175     /* Seed rand */
 176     rb->srand(*rb->current_tick);
 177
 178     /* Make the matrix */
 179     for (i = 0; i <= ROWS; i++) {
 180         for (j = 0; j <= COLS - 1; j++ ) {
 181             matrix[i][j].val = -1;
 182             matrix[i][j].bold = 0;
 183         }
 184     }
 185
 186     for (j = 0; j <= COLS - 1; j++) {
 187         /* Set up spaces[] array of how many spaces to skip */
 188         spaces[j] = rb->rand() % ROWS + 1;
 189
 190         /* And length of the stream */
 191         length[j] = rb->rand() % (ROWS - 3) + 3;
 192
 193         /* Sentinel value for creation of new objects */
 194         matrix[1][j].val = 129;
 195
 196         /* And set updates[] array for update speed. */
 197         updates[j] = rb->rand() % 3 + 1;
 198     }
 199 }
 200
 201 static void matrix_blit_char(const int row, const int col, int cha)
 202 {
 203     if (cha == 129 || cha == 2 || cha > MAXCHARS)
 204         cha = 0;
 205
 206     if (matrix[row][col].bold == 1) {
 207         rb->lcd_bitmap_part(matrix_bold, cha*COL_W, 0, 392,
 208                 col*COL_W + LEFTMARGIN, row*COL_H + TOPMARGIN, COL_W, COL_H);
 209     }
 210     else {
 211         rb->lcd_bitmap_part(matrix_normal, cha*COL_W, 0, 392,
 212                 col*COL_W + LEFTMARGIN, row*COL_H + TOPMARGIN, COL_W, COL_H);
 213     }
 214 }
 215
 216 static void matrix_loop(void)
 217 {
 218     int i, j = 0, y, z, firstcoldone = 0;
 219     static int count = 0;
 220     int randomness = 6;
 221
 222     count++;
 223     if (count > 4)
 224         count = 1;
 225
 226     for (j = 0; j <= COLS - 1; j++) {
 227         if (count > updates[j]) {
 228             /* New style scrolling */
 229             if (matrix[0][j].val == -1 && matrix[1][j].val == 129
 230                     && spaces[j] > 0) {
 231                 matrix[0][j].val = -1;
 232                 spaces[j]--;
 233             } else if (matrix[0][j].val == -1 && matrix[1][j].val == 129){
 234                 length[j] = rb->rand() % (ROWS - 3) + 3;
 235                 matrix[0][j].val = rb->rand() % (MAXCHARS-1) + 1;
 236                 if (rb->rand() % 2 == 1)
 237                     matrix[0][j].bold = 2;
 238                 spaces[j] = rb->rand() % ROWS + 1;
 239             }
 240             i = 0;
 241             y = 0;
 242             firstcoldone = 0;
 243             while (i <= ROWS) {
 244                 /* Skip over spaces */
 245                 /* this is whear the characters were disappearing */
 246 /*
 247                 while (i <= ROWS && (matrix[i][j].val == 129 ||
 248                             matrix[i][j].val == -1))
 249                     i++;
 250 */
 251         /* A little more random now for spaces */
 252                if (rb->rand() % randomness == 1){
 253                    while (i <= ROWS && (matrix[i][j].val == 129 ||
 254                             matrix[i][j].val == -1)){
 255                     i++;
 256                     randomness--;
 257                     if(randomness <=1)
 258                         randomness = 6;}
 259                 }else{
 260                     randomness++;
 261                     if(randomness >6)
 262                     randomness = 6;
 263                 }
 264
 265
 266                 if (i > ROWS)
 267                     break;
 268
 269                 /* Go to the head of this collumn */
 270                 z = i;
 271                 y = 0;
 272                 while (i <= ROWS && (matrix[i][j].val != 129 &&
 273                             matrix[i][j].val != -1)) {
 274                     i++;
 275                     y++;
 276                 }
 277
 278                 if (i > ROWS) {
 279                     matrix[z][j].val = 129;
 280                     matrix[ROWS][j].bold = 1;
 281                     matrix_blit_char(z - 1, j, matrix[z][j].val);
 282                     continue;
 283                 }
 284
 285                 matrix[i][j].val = rb->rand() % (MAXCHARS-1) + 1;
 286
 287                 if (matrix[i - 1][j].bold == 2) {
 288                     matrix[i - 1][j].bold = 1;
 289                     matrix[i][j].bold = 2;
 290                 }
 291
 292                 /* If we're at the top of the collumn and it's reached its
 293                  * full length (about to start moving down), we do this
 294                  * to get it moving. This is also how we keep segments
 295                  * not already growing from growing accidentally =>
 296                  */
 297                 if (y > length[j] || firstcoldone) {
 298                     matrix[z][j].val = 129;
 299                     matrix[0][j].val = -1;
 300                 }
 301                 firstcoldone = 1;
 302                 i++;
 303             }
 304             for (i = 1; i <= ROWS; i++) {
 305                 if (matrix[i][j].val == 0 || matrix[i][j].bold == 2) {
 306                     if (matrix[i][j].val == 0)
 307                         matrix_blit_char(i - 1, j, 20);
 308                     else
 309                         matrix_blit_char(i - 1, j, matrix[i][j].val);
 310                 } else {
 311                     if (matrix[i][j].val == 1)
 312                         matrix_blit_char(i - 1, j, 2);
 313                     else if (matrix[i][j].val == -1)
 314                         matrix_blit_char(i - 1, j, 129);
 315                     else
 316                         matrix_blit_char(i - 1, j, matrix[i][j].val);
 317                 }
 318             }
 319         }
 320     }
 321 }
 322
 323 enum plugin_status plugin_start(const void* parameter) {
 324     int button;
 325     int sleep = SLEEP;
 326     bool frozen = false;
 327
 328     (void)parameter;
 329
 330     rb->lcd_set_background(LCD_BLACK);
 331     rb->lcd_set_backdrop(NULL);
 332     rb->lcd_clear_display();
 333     matrix_init();
 334
 335     while (1) {
 336         if (!frozen) {
 337             matrix_loop();
 338             rb->lcd_update();
 339             rb->sleep(sleep);
 340         }
 341         button = rb->button_get(frozen);
 342         switch(button) {
 343             case MATRIX_PAUSE:
 344                 frozen = !frozen;
 345                 break;
 346             case MATRIX_EXIT:
 347                 return PLUGIN_OK;
 348                 break;
 349             case MATRIX_SLEEP_MORE:
 350                 /* Sleep longer */
 351                 sleep += SLEEP;
 352                 break;
 353             case MATRIX_SLEEP_LESS:
 354                 /* Sleep less */
 355                 sleep -= SLEEP;
 356                 if (sleep < 0) sleep = 0;
 357                 break;
 358             default:
 359                 if (rb->default_event_handler(button) == SYS_USB_CONNECTED) {
 360                     return PLUGIN_USB_CONNECTED;
 361                 }
 362                 break;
 363         }
 364     }
 365     return PLUGIN_OK;
 366 }