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 /* FIXME: could use plugin lib actions */
  53 #if (CONFIG_KEYPAD == IPOD_4G_PAD) || \
  54       (CONFIG_KEYPAD == IPOD_3G_PAD) || \
  55       (CONFIG_KEYPAD == IPOD_1G2G_PAD)
  56 #define MATRIX_EXIT BUTTON_MENU
  57 #define MATRIX_SLEEP_MORE BUTTON_SCROLL_BACK|BUTTON_REPEAT
  58 #define MATRIX_SLEEP_LESS BUTTON_SCROLL_FWD|BUTTON_REPEAT
  59 #define MATRIX_PAUSE BUTTON_PLAY
  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 #elif (CONFIG_KEYPAD == IRIVER_H10_PAD)
  67 #define MATRIX_EXIT BUTTON_POWER
  68 #define MATRIX_SLEEP_MORE BUTTON_SCROLL_UP|BUTTON_REPEAT
  69 #define MATRIX_SLEEP_LESS BUTTON_SCROLL_DOWN|BUTTON_REPEAT
  70 #define MATRIX_PAUSE BUTTON_PLAY
  71 #elif (CONFIG_KEYPAD == IAUDIO_X5M5_PAD)
  72 #define MATRIX_EXIT BUTTON_POWER
  73 #define MATRIX_SLEEP_MORE BUTTON_UP
  74 #define MATRIX_SLEEP_LESS BUTTON_DOWN
  75 #define MATRIX_PAUSE BUTTON_PLAY
  76 #elif (CONFIG_KEYPAD == GIGABEAT_PAD)
  77 #define MATRIX_EXIT BUTTON_POWER
  78 #define MATRIX_SLEEP_MORE BUTTON_UP
  79 #define MATRIX_SLEEP_LESS BUTTON_DOWN
  80 #define MATRIX_PAUSE BUTTON_SELECT
  81 #elif CONFIG_KEYPAD == SANSA_E200_PAD
  82 #define MATRIX_EXIT BUTTON_POWER
  83 #define MATRIX_SLEEP_MORE BUTTON_SCROLL_BACK|BUTTON_REPEAT
  84 #define MATRIX_SLEEP_LESS BUTTON_SCROLL_FWD|BUTTON_REPEAT
  85 #define MATRIX_PAUSE BUTTON_SELECT
  86 #elif CONFIG_KEYPAD == SANSA_FUZE_PAD
  87 #define MATRIX_EXIT         BUTTON_DOWN
  88 #define MATRIX_SLEEP_MORE   BUTTON_SCROLL_BACK|BUTTON_REPEAT
  89 #define MATRIX_SLEEP_LESS   BUTTON_SCROLL_FWD|BUTTON_REPEAT
  90 #define MATRIX_PAUSE        BUTTON_SELECT
  91 #elif CONFIG_KEYPAD == SANSA_C200_PAD
  92 #define MATRIX_EXIT BUTTON_POWER
  93 #define MATRIX_SLEEP_MORE BUTTON_UP
  94 #define MATRIX_SLEEP_LESS BUTTON_DOWN
  95 #define MATRIX_PAUSE BUTTON_SELECT
  96 #elif (CONFIG_KEYPAD == GIGABEAT_S_PAD)
  97 #define MATRIX_EXIT BUTTON_BACK
  98 #define MATRIX_SLEEP_MORE BUTTON_UP
  99 #define MATRIX_SLEEP_LESS BUTTON_DOWN
 100 #define MATRIX_PAUSE BUTTON_SELECT
 101 #elif CONFIG_KEYPAD == IAUDIO_M3_PAD
 102 #define MATRIX_EXIT BUTTON_RC_REC
 103 #define MATRIX_SLEEP_MORE BUTTON_RC_VOL_UP
 104 #define MATRIX_SLEEP_LESS BUTTON_RC_VOL_DOWN
 105 #define MATRIX_PAUSE BUTTON_RC_PLAY
 106 #elif (CONFIG_KEYPAD == COWOND2_PAD)
 107 #define MATRIX_EXIT BUTTON_POWER
 108 #elif CONFIG_KEYPAD == IAUDIO67_PAD
 109 #define MATRIX_EXIT BUTTON_POWER
 110 #define MATRIX_SLEEP_MORE BUTTON_VOLUP
 111 #define MATRIX_SLEEP_LESS BUTTON_VOLDOWN
 112 #define MATRIX_PAUSE BUTTON_PLAY
 113 #elif CONFIG_KEYPAD == CREATIVEZVM_PAD
 114 #define MATRIX_EXIT BUTTON_BACK
 115 #define MATRIX_SLEEP_MORE BUTTON_UP
 116 #define MATRIX_SLEEP_LESS BUTTON_DOWN
 117 #define MATRIX_PAUSE BUTTON_PLAY
 118 #else
 119 #error Unsupported keypad
 120 #endif
 121
 122 #ifdef HAVE_TOUCHSCREEN
 123 #ifndef MATRIX_EXIT
 124 #define MATRIX_EXIT       BUTTON_TOPLEFT
 125 #endif
 126 #ifndef MATRIX_SLEEP_MORE
 127 #define MATRIX_SLEEP_MORE BUTTON_MIDRIGHT
 128 #endif
 129 #ifndef MATRIX_SLEEP_LESS
 130 #define MATRIX_SLEEP_LESS BUTTON_MIDLEFT
 131 #endif
 132 #ifndef MATRIX_PAUSE
 133 #define MATRIX_PAUSE      BUTTON_CENTER
 134 #endif
 135 #endif
 136
 137 #define SLEEP HZ/50
 138
 139 /* Codec api pointer */
 140 static const struct plugin_api* rb;
 141
 142 /* Each position is of this type */
 143 typedef struct cmatrix {
 144     int val;
 145     int bold;
 146 } cmatrix;
 147
 148 /* The matrix - who'd have guessed it was just a few hundred bytes? */
 149 static cmatrix matrix[ROWS][COLS];
 150 static int length[COLS];
 151 static int spaces[COLS];
 152 static int updates[COLS];
 153
 154 static void matrix_init(void) {
 155     int i,j;
 156
 157     /* Seed rand */
 158     rb->srand(*rb->current_tick);
 159
 160     /* Make the matrix */
 161     for (i = 0; i <= ROWS; i++) {
 162         for (j = 0; j <= COLS - 1; j++ ) {
 163             matrix[i][j].val = -1;
 164             matrix[i][j].bold = 0;
 165         }
 166     }
 167
 168     for (j = 0; j <= COLS - 1; j++) {
 169         /* Set up spaces[] array of how many spaces to skip */
 170         spaces[j] = rb->rand() % ROWS + 1;
 171
 172         /* And length of the stream */
 173         length[j] = rb->rand() % (ROWS - 3) + 3;
 174
 175         /* Sentinel value for creation of new objects */
 176         matrix[1][j].val = 129;
 177
 178         /* And set updates[] array for update speed. */
 179         updates[j] = rb->rand() % 3 + 1;
 180     }
 181 }
 182
 183 static void matrix_blit_char(const int row, const int col, int cha)
 184 {
 185     if (cha == 129 || cha == 2 || cha > MAXCHARS)
 186         cha = 0;
 187
 188     if (matrix[row][col].bold == 1) {
 189         rb->lcd_bitmap_part(matrix_bold, cha*COL_W, 0, 392,
 190                 col*COL_W + LEFTMARGIN, row*COL_H + TOPMARGIN, COL_W, COL_H);
 191     }
 192     else {
 193         rb->lcd_bitmap_part(matrix_normal, cha*COL_W, 0, 392,
 194                 col*COL_W + LEFTMARGIN, row*COL_H + TOPMARGIN, COL_W, COL_H);
 195     }
 196 }
 197
 198 static void matrix_loop(void)
 199 {
 200     int i, j = 0, y, z, firstcoldone = 0;
 201     static int count = 0;
 202     int randomness = 6;
 203
 204     count++;
 205     if (count > 4)
 206         count = 1;
 207
 208     for (j = 0; j <= COLS - 1; j++) {
 209         if (count > updates[j]) {
 210             /* New style scrolling */
 211             if (matrix[0][j].val == -1 && matrix[1][j].val == 129
 212                     && spaces[j] > 0) {
 213                 matrix[0][j].val = -1;
 214                 spaces[j]--;
 215             } else if (matrix[0][j].val == -1 && matrix[1][j].val == 129){
 216                 length[j] = rb->rand() % (ROWS - 3) + 3;
 217                 matrix[0][j].val = rb->rand() % (MAXCHARS-1) + 1;
 218                 if (rb->rand() % 2 == 1)
 219                     matrix[0][j].bold = 2;
 220                 spaces[j] = rb->rand() % ROWS + 1;
 221             }
 222             i = 0;
 223             y = 0;
 224             firstcoldone = 0;
 225             while (i <= ROWS) {
 226                 /* Skip over spaces */
 227                 /* this is whear the characters were disappearing */
 228 /*
 229                 while (i <= ROWS && (matrix[i][j].val == 129 ||
 230                             matrix[i][j].val == -1))
 231                     i++;
 232 */
 233         /* A little more random now for spaces */
 234                if (rb->rand() % randomness == 1){
 235                    while (i <= ROWS && (matrix[i][j].val == 129 ||
 236                             matrix[i][j].val == -1)){
 237                     i++;
 238                     randomness--;
 239                     if(randomness <=1)
 240                         randomness = 6;}
 241                 }else{
 242                     randomness++;
 243                     if(randomness >6)
 244                     randomness = 6;
 245                 }
 246
 247
 248                 if (i > ROWS)
 249                     break;
 250
 251                 /* Go to the head of this collumn */
 252                 z = i;
 253                 y = 0;
 254                 while (i <= ROWS && (matrix[i][j].val != 129 &&
 255                             matrix[i][j].val != -1)) {
 256                     i++;
 257                     y++;
 258                 }
 259
 260                 if (i > ROWS) {
 261                     matrix[z][j].val = 129;
 262                     matrix[ROWS][j].bold = 1;
 263                     matrix_blit_char(z - 1, j, matrix[z][j].val);
 264                     continue;
 265                 }
 266
 267                 matrix[i][j].val = rb->rand() % (MAXCHARS-1) + 1;
 268
 269                 if (matrix[i - 1][j].bold == 2) {
 270                     matrix[i - 1][j].bold = 1;
 271                     matrix[i][j].bold = 2;
 272                 }
 273
 274                 /* If we're at the top of the collumn and it's reached its
 275                  * full length (about to start moving down), we do this
 276                  * to get it moving. This is also how we keep segments
 277                  * not already growing from growing accidentally =>
 278                  */
 279                 if (y > length[j] || firstcoldone) {
 280                     matrix[z][j].val = 129;
 281                     matrix[0][j].val = -1;
 282                 }
 283                 firstcoldone = 1;
 284                 i++;
 285             }
 286             for (i = 1; i <= ROWS; i++) {
 287                 if (matrix[i][j].val == 0 || matrix[i][j].bold == 2) {
 288                     if (matrix[i][j].val == 0)
 289                         matrix_blit_char(i - 1, j, 20);
 290                     else
 291                         matrix_blit_char(i - 1, j, matrix[i][j].val);
 292                 } else {
 293                     if (matrix[i][j].val == 1)
 294                         matrix_blit_char(i - 1, j, 2);
 295                     else if (matrix[i][j].val == -1)
 296                         matrix_blit_char(i - 1, j, 129);
 297                     else
 298                         matrix_blit_char(i - 1, j, matrix[i][j].val);
 299                 }
 300             }
 301         }
 302     }
 303 }
 304
 305 enum plugin_status plugin_start(const struct plugin_api* api, const void* parameter) {
 306     int button;
 307     int sleep = SLEEP;
 308     bool frozen = false;
 309
 310     (void)parameter;
 311     rb = api;
 312
 313     rb->lcd_set_background(LCD_BLACK);
 314     rb->lcd_set_backdrop(NULL);
 315     rb->lcd_clear_display();
 316     matrix_init();
 317
 318     while (1) {
 319         if (!frozen) {
 320             matrix_loop();
 321             rb->lcd_update();
 322             rb->sleep(sleep);
 323         }
 324         button = rb->button_get(frozen);
 325         switch(button) {
 326             case MATRIX_PAUSE:
 327                 frozen = !frozen;
 328                 break;
 329             case MATRIX_EXIT:
 330                 return PLUGIN_OK;
 331                 break;
 332             case MATRIX_SLEEP_MORE:
 333                 /* Sleep longer */
 334                 sleep += SLEEP;
 335                 break;
 336             case MATRIX_SLEEP_LESS:
 337                 /* Sleep less */
 338                 sleep -= SLEEP;
 339                 if (sleep < 0) sleep = 0;
 340                 break;
 341             default:
 342                 if (rb->default_event_handler(button) == SYS_USB_CONNECTED) {
 343                     return PLUGIN_USB_CONNECTED;
 344                 }
 345                 break;
 346         }
 347     }
 348     return PLUGIN_OK;
 349 }