apps/plugins/starfield.c

   1 /***************************************************************************
   2 *             __________               __   ___.
   3 *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
   4 *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
   5 *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
   6 *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
   7 *                     \/            \/     \/    \/            \/
   8 * Copyright (C) 2005 Kevin Ferrare
   9 *
  10 * This program is free software; you can redistribute it and/or
  11 * modify it under the terms of the GNU General Public License
  12 * as published by the Free Software Foundation; either version 2
  13 * of the License, or (at your option) any later version.
  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 "plugin.h"
  21 #include "helper.h"
  22
  23 #ifdef HAVE_LCD_BITMAP /* and also not for the Player */
  24
  25 PLUGIN_HEADER
  26
  27 /******************************* Globals ***********************************/
  28
  29 static const struct plugin_api* rb; /* global api struct pointer */
  30
  31 /* Key assignement */
  32 #if (CONFIG_KEYPAD == IPOD_4G_PAD) || \
  33     (CONFIG_KEYPAD == IPOD_3G_PAD) || \
  34     (CONFIG_KEYPAD == IPOD_1G2G_PAD)
  35 #define STARFIELD_QUIT BUTTON_MENU
  36 #define STARFIELD_INCREASE_ZMOVE BUTTON_SCROLL_FWD
  37 #define STARFIELD_DECREASE_ZMOVE BUTTON_SCROLL_BACK
  38 #define STARFIELD_INCREASE_NB_STARS BUTTON_RIGHT
  39 #define STARFIELD_DECREASE_NB_STARS BUTTON_LEFT
  40 #define STARFIELD_TOGGLE_COLOR BUTTON_PLAY
  41 #elif (CONFIG_KEYPAD == IAUDIO_X5M5_PAD)
  42 #define STARFIELD_QUIT BUTTON_POWER
  43 #define STARFIELD_INCREASE_ZMOVE BUTTON_UP
  44 #define STARFIELD_DECREASE_ZMOVE BUTTON_DOWN
  45 #define STARFIELD_INCREASE_NB_STARS BUTTON_RIGHT
  46 #define STARFIELD_DECREASE_NB_STARS BUTTON_LEFT
  47 #define STARFIELD_TOGGLE_COLOR BUTTON_PLAY
  48 #elif (CONFIG_KEYPAD == IRIVER_H10_PAD)
  49 #define STARFIELD_QUIT BUTTON_POWER
  50 #define STARFIELD_INCREASE_ZMOVE BUTTON_SCROLL_UP
  51 #define STARFIELD_DECREASE_ZMOVE BUTTON_SCROLL_DOWN
  52 #define STARFIELD_INCREASE_NB_STARS BUTTON_RIGHT
  53 #define STARFIELD_DECREASE_NB_STARS BUTTON_LEFT
  54 #define STARFIELD_TOGGLE_COLOR BUTTON_PLAY
  55 #elif (CONFIG_KEYPAD == GIGABEAT_PAD)
  56 #define STARFIELD_QUIT BUTTON_POWER
  57 #define STARFIELD_INCREASE_ZMOVE BUTTON_UP
  58 #define STARFIELD_DECREASE_ZMOVE BUTTON_DOWN
  59 #define STARFIELD_INCREASE_NB_STARS BUTTON_RIGHT
  60 #define STARFIELD_DECREASE_NB_STARS BUTTON_LEFT
  61 #define STARFIELD_TOGGLE_COLOR BUTTON_SELECT
  62 #elif (CONFIG_KEYPAD == SANSA_E200_PAD) || \
  63 (CONFIG_KEYPAD == SANSA_C200_PAD)
  64 #define STARFIELD_QUIT BUTTON_POWER
  65 #define STARFIELD_INCREASE_ZMOVE BUTTON_UP
  66 #define STARFIELD_DECREASE_ZMOVE BUTTON_DOWN
  67 #define STARFIELD_INCREASE_NB_STARS BUTTON_RIGHT
  68 #define STARFIELD_DECREASE_NB_STARS BUTTON_LEFT
  69 #define STARFIELD_TOGGLE_COLOR BUTTON_SELECT
  70 #elif (CONFIG_KEYPAD == GIGABEAT_S_PAD)
  71 #define STARFIELD_QUIT BUTTON_BACK
  72 #define STARFIELD_INCREASE_ZMOVE BUTTON_UP
  73 #define STARFIELD_DECREASE_ZMOVE BUTTON_DOWN
  74 #define STARFIELD_INCREASE_NB_STARS BUTTON_RIGHT
  75 #define STARFIELD_DECREASE_NB_STARS BUTTON_LEFT
  76 #define STARFIELD_TOGGLE_COLOR BUTTON_SELECT
  77 #elif (CONFIG_KEYPAD == MROBE100_PAD)
  78 #define STARFIELD_QUIT BUTTON_POWER
  79 #define STARFIELD_INCREASE_ZMOVE BUTTON_UP
  80 #define STARFIELD_DECREASE_ZMOVE BUTTON_DOWN
  81 #define STARFIELD_INCREASE_NB_STARS BUTTON_RIGHT
  82 #define STARFIELD_DECREASE_NB_STARS BUTTON_LEFT
  83 #define STARFIELD_TOGGLE_COLOR BUTTON_SELECT
  84 #elif CONFIG_KEYPAD == IAUDIO_M3_PAD
  85 #define STARFIELD_QUIT BUTTON_RC_REC
  86 #define STARFIELD_INCREASE_ZMOVE BUTTON_RC_VOL_UP
  87 #define STARFIELD_DECREASE_ZMOVE BUTTON_RC_VOL_DOWN
  88 #define STARFIELD_INCREASE_NB_STARS BUTTON_RC_FF
  89 #define STARFIELD_DECREASE_NB_STARS BUTTON_RC_REW
  90 #define STARFIELD_TOGGLE_COLOR BUTTON_RC_MODE
  91 #elif (CONFIG_KEYPAD == COWOND2_PAD)
  92 #define STARFIELD_QUIT BUTTON_POWER
  93 #endif
  94
  95 #ifdef HAVE_TOUCHPAD
  96 #ifndef STARFIELD_QUIT
  97 #define STARFIELD_QUIT              BUTTON_TOPLEFT
  98 #endif
  99 #ifndef STARFIELD_INCREASE_ZMOVE
 100 #define STARFIELD_INCREASE_ZMOVE    BUTTON_TOPMIDDLE
 101 #endif
 102 #ifndef STARFIELD_DECREASE_ZMOVE
 103 #define STARFIELD_DECREASE_ZMOVE    BUTTON_BOTTOMMIDDLE
 104 #endif
 105 #ifndef STARFIELD_INCREASE_NB_STARS
 106 #define STARFIELD_INCREASE_NB_STARS BUTTON_MIDRIGHT
 107 #endif
 108 #ifndef STARFIELD_DECREASE_NB_STARS
 109 #define STARFIELD_DECREASE_NB_STARS BUTTON_MIDLEFT
 110 #endif
 111 #ifndef STARFIELD_TOGGLE_COLOR
 112 #define STARFIELD_TOGGLE_COLOR      BUTTON_CENTER
 113 #endif
 114 #endif
 115
 116 #ifndef STARFIELD_QUIT
 117 #define STARFIELD_QUIT BUTTON_OFF
 118 #endif
 119 #ifndef STARFIELD_INCREASE_ZMOVE
 120 #define STARFIELD_INCREASE_ZMOVE BUTTON_UP
 121 #endif
 122 #ifndef STARFIELD_DECREASE_ZMOVE
 123 #define STARFIELD_DECREASE_ZMOVE BUTTON_DOWN
 124 #endif
 125 #ifndef STARFIELD_INCREASE_NB_STARS
 126 #define STARFIELD_INCREASE_NB_STARS BUTTON_RIGHT
 127 #endif
 128 #ifndef STARFIELD_DECREASE_NB_STARS
 129 #define STARFIELD_DECREASE_NB_STARS BUTTON_LEFT
 130 #endif
 131
 132 #ifndef STARFIELD_TOGGLE_COLOR
 133 #ifdef BUTTON_SELECT
 134 #define STARFIELD_TOGGLE_COLOR BUTTON_SELECT
 135 #else
 136 #define STARFIELD_TOGGLE_COLOR BUTTON_PLAY
 137 #endif
 138 #endif
 139 #if (CONFIG_KEYPAD == IRIVER_H100_PAD) || (CONFIG_KEYPAD == IRIVER_H300_PAD)
 140 #define STARFIELD_RC_QUIT BUTTON_RC_STOP
 141 #endif
 142
 143
 144 #define LCD_CENTER_X (LCD_WIDTH/2)
 145 #define LCD_CENTER_Y (LCD_HEIGHT/2)
 146 #define Z_MAX_DIST 100
 147
 148
 149 #define MAX_STARS (LCD_WIDTH*LCD_HEIGHT*20)/100
 150 #define INIT_STARS 200
 151 #define STARFIELD_INCREASE_STEP 50
 152 #define INIT_SPACE_SPEED 1
 153 #define STAR_MAX_VELOCITY 2
 154 /*
 155  * max 3d coord in the 2d screen :
 156  * example with x
 157  *  x2d=x3d/z+LCD_CENTER_X (+LCD_CENTER_X to center ...)
 158  * so
 159  *  max_x2d=max_x3d/max_z+LCD_CENTER_X
 160  *  max_x3d=(max_x2d-LCD_CENTER_X)*max_z
 161  * with
 162  *  max_x2d = LCD_WIDTH
 163  *  max_z = Z_MAX_DIST
 164  * we have now
 165  * max_x3d=(LCD_WIDTH-LCD_CENTER_X)*Z_MAX_DIST
 166  * max_x3d=LCD_CENTER_X*Z_MAX_DIST
 167  */
 168
 169 #define MAX_INIT_STAR_X LCD_CENTER_X*Z_MAX_DIST
 170 #define MAX_INIT_STAR_Y LCD_CENTER_Y*Z_MAX_DIST
 171
 172 #define MSG_DISP_TIME 30
 173
 174 static const struct plugin_api* rb; /* global api struct pointer */
 175
 176 /*
 177  * Each star's stuffs
 178  */
 179 struct star
 180 {
 181     int x,y,z;
 182     int velocity;
 183 #ifdef HAVE_LCD_COLOR
 184     int color;
 185 #endif
 186 };
 187
 188 static inline void star_init(struct star * star, int z_move, bool color)
 189 {
 190     star->velocity=rb->rand() % STAR_MAX_VELOCITY+1;
 191     /* choose x between -MAX_INIT_STAR_X and MAX_INIT_STAR_X */
 192     star->x=rb->rand() % (2*MAX_INIT_STAR_X)-MAX_INIT_STAR_X;
 193     star->y=rb->rand() % (2*MAX_INIT_STAR_Y)-MAX_INIT_STAR_Y;
 194 #ifdef HAVE_LCD_COLOR
 195     if(color)
 196         star->color=LCD_RGBPACK(rb->rand()%128+128,rb->rand()%128+128,
 197                                 rb->rand()%128+128);
 198     else
 199         star->color=LCD_WHITE;
 200 #else
 201     (void)color;
 202 #endif
 203     if(z_move>=0)
 204         star->z=Z_MAX_DIST;
 205     else
 206         star->z=rb->rand() %Z_MAX_DIST/2+1;
 207 }
 208
 209 static inline void star_move(struct star * star, int z_move, bool color)
 210 {
 211     star->z -= z_move*star->velocity;
 212     if (star->z <= 0 || star->z > Z_MAX_DIST)
 213         star_init(star, z_move, color);
 214 }
 215
 216 static inline void star_draw(struct star * star, int z_move, bool color)
 217 {
 218     int x_draw, y_draw;
 219     /*
 220      * 3d -> 2d : projection on the screen : x2d=x3d/z (thales theorem)
 221      * we put the star in the center of the screen
 222      */
 223     x_draw = star->x / star->z + LCD_CENTER_X;
 224     if (x_draw < 1 || x_draw >= LCD_WIDTH)
 225     {
 226         star_init(star, z_move, color);
 227         return;
 228     }
 229     y_draw  = star->y / star->z + LCD_CENTER_Y;
 230     if (y_draw < 1 || y_draw >= LCD_HEIGHT)
 231     {
 232         star_init(star, z_move, color);
 233         return;
 234     }
 235
 236 #ifdef HAVE_LCD_COLOR
 237     rb->lcd_set_foreground(star->color);
 238 #endif
 239
 240     rb->lcd_drawpixel(x_draw, y_draw);
 241     if(star->z<5*Z_MAX_DIST/6)
 242     {
 243         rb->lcd_drawpixel(x_draw, y_draw - 1);
 244         rb->lcd_drawpixel(x_draw - 1, y_draw);
 245         if(star->z<Z_MAX_DIST/2)
 246         {
 247             rb->lcd_drawpixel(x_draw + 1, y_draw);
 248             rb->lcd_drawpixel(x_draw, y_draw + 1);
 249         }
 250     }
 251 }
 252
 253 /*
 254  * Whole starfield operations
 255  */
 256 struct starfield
 257 {
 258     struct star tab[MAX_STARS];
 259     int nb_stars;
 260     int z_move;
 261     bool color;
 262 };
 263
 264 static inline void starfield_init(struct starfield * starfield)
 265 {
 266     starfield->nb_stars=0;
 267     starfield->z_move=INIT_SPACE_SPEED;
 268     starfield->color=false;
 269 }
 270
 271 static inline void starfield_add_stars(struct starfield * starfield,
 272                                        int nb_to_add)
 273 {
 274     int i, old_nb_stars;
 275     old_nb_stars=starfield->nb_stars;
 276     starfield->nb_stars+=nb_to_add;
 277
 278     if(starfield->nb_stars > MAX_STARS)
 279         starfield->nb_stars=MAX_STARS;
 280
 281     for( i=old_nb_stars ; i < starfield->nb_stars ; ++i )
 282     {
 283         star_init( &(starfield->tab[i]), starfield->z_move, starfield->color );
 284     }
 285 }
 286
 287 static inline void starfield_del_stars(struct starfield * starfield,
 288                                        int nb_to_add)
 289 {
 290     starfield->nb_stars-=nb_to_add;
 291     if(starfield->nb_stars<0)
 292         starfield->nb_stars=0;
 293 }
 294
 295 static inline void starfield_move_and_draw(struct starfield * starfield)
 296 {
 297     int i;
 298     for(i=0;i<starfield->nb_stars;++i)
 299     {
 300         star_move(&(starfield->tab[i]), starfield->z_move, starfield->color);
 301         star_draw(&(starfield->tab[i]), starfield->z_move, starfield->color);
 302     }
 303 }
 304
 305 static struct starfield starfield;
 306
 307 int plugin_main(void)
 308 {
 309     char str_buffer[40];
 310     int button, avg_peak, t_disp=0;
 311     int font_h, font_w;
 312     bool pulse=true;
 313     rb->lcd_getstringsize("A", &font_w, &font_h);
 314     starfield_init(&starfield);
 315     starfield_add_stars(&starfield, INIT_STARS);
 316
 317 #if LCD_DEPTH > 1
 318      rb->lcd_set_backdrop(NULL);
 319 #endif
 320 #ifdef HAVE_LCD_COLOR
 321     rb->lcd_set_background(LCD_BLACK);
 322     rb->lcd_set_foreground(LCD_WHITE);
 323 #endif
 324
 325     while (true)
 326     {
 327         rb->sleep(1);
 328         rb->lcd_clear_display();
 329
 330 #if ((CONFIG_CODEC == SWCODEC)  || !defined(SIMULATOR) && \
 331     ((CONFIG_CODEC == MAS3587F) || (CONFIG_CODEC == MAS3539F)))
 332
 333         /* This will make the stars pulse to the music */
 334         if(pulse==true){
 335
 336             /* Get the peaks. ( Borrowed from vu_meter ) */
 337 #if (CONFIG_CODEC == SWCODEC)
 338             int left_peak, right_peak;
 339             rb->pcm_calculate_peaks(&left_peak, &right_peak);
 340 #else
 341             int left_peak = rb->mas_codec_readreg(0xC);
 342             int right_peak = rb->mas_codec_readreg(0xD);
 343 #endif
 344             /* Devide peak data by 4098 to bring the max
 345                value down from ~32k to 8 */
 346             left_peak  =    left_peak/0x1000;
 347             right_peak =    right_peak/0x1000;
 348
 349             /* Make sure they dont stop */
 350             if(left_peak<0x1)
 351                 left_peak     = 0x1;
 352             if(right_peak<0x1)
 353                 right_peak    = 0x1;
 354
 355             /* And make sure they dont go over 8 */
 356             if(left_peak>0x8)
 357                 left_peak     = 0x8;
 358             if(right_peak>0x8)
 359                 right_peak    = 0x8;
 360
 361             /* We need the average of both chanels */
 362             avg_peak     = ( left_peak + right_peak )/2;
 363
 364             /* Set the speed to the peak meter */
 365             starfield.z_move = avg_peak;
 366
 367         } /* if pulse */
 368 #else
 369         (void) avg_peak;
 370 #endif
 371         starfield_move_and_draw(&starfield);
 372
 373 #ifdef HAVE_LCD_COLOR
 374         rb->lcd_set_foreground(LCD_WHITE);
 375 #endif
 376
 377         /* if a parameter is updated (by the user), we must print it */
 378         if (t_disp > 0)
 379         {
 380             --t_disp;
 381             rb->snprintf(str_buffer, sizeof(str_buffer),
 382                          "star:%d speed:%d",
 383                          starfield.nb_stars,
 384                          starfield.z_move);
 385 #ifdef HAVE_LCD_COLOR
 386             rb->lcd_set_foreground(LCD_WHITE);
 387 #endif
 388             rb->lcd_putsxy(0, LCD_HEIGHT-font_h, str_buffer);
 389         }
 390         rb->lcd_update();
 391
 392         button = rb->button_get(false);
 393         switch(button)
 394         {
 395             case (STARFIELD_INCREASE_ZMOVE):
 396             case (STARFIELD_INCREASE_ZMOVE | BUTTON_REPEAT):
 397                 ++(starfield.z_move);
 398                 pulse=false;
 399                 t_disp=MSG_DISP_TIME;
 400                 break;
 401             case (STARFIELD_DECREASE_ZMOVE):
 402             case (STARFIELD_DECREASE_ZMOVE | BUTTON_REPEAT):
 403                 --(starfield.z_move);
 404                 pulse=false;
 405                 t_disp=MSG_DISP_TIME;
 406                 break;
 407             case(STARFIELD_INCREASE_NB_STARS):
 408             case(STARFIELD_INCREASE_NB_STARS | BUTTON_REPEAT):
 409                 starfield_add_stars(&starfield, STARFIELD_INCREASE_STEP);
 410                 t_disp=MSG_DISP_TIME;
 411                 break;
 412             case(STARFIELD_DECREASE_NB_STARS):
 413             case(STARFIELD_DECREASE_NB_STARS | BUTTON_REPEAT):
 414                 starfield_del_stars(&starfield, STARFIELD_INCREASE_STEP);
 415                 t_disp=MSG_DISP_TIME;
 416                 break;
 417 #ifdef HAVE_LCD_COLOR
 418             case(STARFIELD_TOGGLE_COLOR):
 419                 starfield.color=!starfield.color;
 420                 break;
 421 #endif
 422 #ifdef STARFIELD_RC_QUIT
 423             case STARFIELD_RC_QUIT:
 424 #endif
 425             case(STARFIELD_QUIT):
 426             case(SYS_USB_CONNECTED):
 427                 /* Turn on backlight timeout (revert to settings) */
 428                 backlight_use_settings(rb); /* backlight control in lib/helper.c*/
 429                 return PLUGIN_OK;
 430                 break;
 431         }
 432     }
 433 }
 434
 435 /*************************** Plugin entry point ****************************/
 436
 437 enum plugin_status plugin_start(const struct plugin_api* api, const void* parameter)
 438 {
 439     int ret;
 440
 441     rb = api; /* copy to global api pointer */
 442     (void)parameter;
 443     /* Turn off backlight timeout */
 444     backlight_force_on(rb); /* backlight control in lib/helper.c */
 445
 446     ret = plugin_main();
 447
 448     return ret;
 449 }
 450
 451 #endif /* #ifdef HAVE_LCD_BITMAP */