apps/plugins/vu_meter.c

   1 /***************************************************************************
   2  *             __________               __   ___.
   3  *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
   4  *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
   5  *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
   6  *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
   7  *                     \/            \/     \/    \/            \/
   8  *
   9  * Copyright (C) 2003 Lee Pilgrim
  10  *
  11  * This program is free software; you can redistribute it and/or
  12  * modify it under the terms of the GNU General Public License
  13  * as published by the Free Software Foundation; either version 2
  14  * of the License, or (at your option) any later version.
  15  *
  16  * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
  17  * KIND, either express or implied.
  18  *
  19  **************************************************************************/
  20 #include "plugin.h"
  21 #include "lib/fixedpoint.h"
  22 #include "lib/playback_control.h"
  23
  24
  25
  26 /* variable button definitions */
  27 #if CONFIG_KEYPAD == RECORDER_PAD
  28 #define VUMETER_QUIT BUTTON_OFF
  29 #define VUMETER_HELP BUTTON_ON
  30 #define VUMETER_MENU BUTTON_F1
  31 #define VUMETER_UP BUTTON_UP
  32 #define VUMETER_DOWN BUTTON_DOWN
  33 #define LABEL_HELP "ON"
  34 #define LABEL_QUIT "OFF"
  35 #define LABEL_MENU "F1"
  36 #define LABEL_VOLUME "UP/DOWN"
  37
  38 #elif CONFIG_KEYPAD == ARCHOS_AV300_PAD
  39 #define VUMETER_QUIT BUTTON_OFF
  40 #define VUMETER_HELP BUTTON_ON
  41 #define VUMETER_MENU BUTTON_F1
  42 #define VUMETER_UP BUTTON_UP
  43 #define VUMETER_DOWN BUTTON_DOWN
  44 #define LABEL_HELP "ON"
  45 #define LABEL_QUIT "OFF"
  46 #define LABEL_MENU "F1"
  47 #define LABEL_VOLUME "UP/DOWN"
  48
  49 #elif CONFIG_KEYPAD == ONDIO_PAD
  50 #define VUMETER_QUIT BUTTON_OFF
  51 #define VUMETER_HELP_PRE BUTTON_MENU
  52 #define VUMETER_HELP (BUTTON_MENU | BUTTON_REL)
  53 #define VUMETER_MENU_PRE BUTTON_MENU
  54 #define VUMETER_MENU (BUTTON_MENU | BUTTON_REPEAT)
  55 #define VUMETER_UP BUTTON_UP
  56 #define VUMETER_DOWN BUTTON_DOWN
  57 #define LABEL_HELP "MODE"
  58 #define LABEL_QUIT "OFF"
  59 #define LABEL_MENU "MODE.."
  60 #define LABEL_VOLUME "UP/DOWN"
  61
  62 #elif (CONFIG_KEYPAD == IRIVER_H100_PAD) || \
  63       (CONFIG_KEYPAD == IRIVER_H300_PAD)
  64 #define VUMETER_QUIT BUTTON_OFF
  65 #define VUMETER_HELP BUTTON_ON
  66 #define VUMETER_MENU BUTTON_SELECT
  67 #define VUMETER_MENU2 BUTTON_MODE
  68 #define VUMETER_UP BUTTON_UP
  69 #define VUMETER_DOWN BUTTON_DOWN
  70 #define LABEL_HELP "PLAY"
  71 #define LABEL_QUIT "STOP"
  72 #define LABEL_MENU "SELECT,MODE"
  73 #define LABEL_VOLUME "UP/DOWN"
  74
  75 #define VUMETER_RC_QUIT BUTTON_RC_STOP
  76
  77 #elif (CONFIG_KEYPAD == IPOD_4G_PAD) || \
  78       (CONFIG_KEYPAD == IPOD_3G_PAD) || \
  79       (CONFIG_KEYPAD == IPOD_1G2G_PAD)
  80 #define VUMETER_QUIT BUTTON_MENU
  81 #define VUMETER_HELP BUTTON_PLAY
  82 #define VUMETER_MENU BUTTON_SELECT
  83 #define VUMETER_UP BUTTON_SCROLL_FWD
  84 #define VUMETER_DOWN BUTTON_SCROLL_BACK
  85 #define LABEL_HELP "PLAY"
  86 #define LABEL_QUIT "MENU"
  87 #define LABEL_MENU "SELECT"
  88 #define LABEL_VOLUME "Wheel"
  89
  90 #elif (CONFIG_KEYPAD == GIGABEAT_PAD)
  91 #define VUMETER_QUIT BUTTON_POWER
  92 #define VUMETER_HELP BUTTON_A
  93 #define VUMETER_MENU BUTTON_MENU
  94 #define VUMETER_UP BUTTON_UP
  95 #define VUMETER_DOWN BUTTON_DOWN
  96 #define LABEL_HELP "A"
  97 #define LABEL_QUIT "POWER"
  98 #define LABEL_MENU "MENU"
  99 #define LABEL_VOLUME "UP/DOWN"
 100
 101 #elif (CONFIG_KEYPAD == SANSA_E200_PAD)
 102 #define VUMETER_QUIT BUTTON_POWER
 103 #define VUMETER_HELP BUTTON_REC
 104 #define VUMETER_MENU BUTTON_SELECT
 105 #define VUMETER_UP BUTTON_SCROLL_FWD
 106 #define VUMETER_DOWN BUTTON_SCROLL_BACK
 107 #define LABEL_HELP "REC"
 108 #define LABEL_QUIT "POWER"
 109 #define LABEL_MENU "SELECT"
 110 #define LABEL_VOLUME "Wheel"
 111
 112 #elif (CONFIG_KEYPAD == SANSA_FUZE_PAD)
 113 #define VUMETER_QUIT        (BUTTON_HOME|BUTTON_REPEAT)
 114 #define VUMETER_HELP        BUTTON_SELECT|BUTTON_REPEAT
 115 #define VUMETER_MENU        BUTTON_SELECT|BUTTON_REL
 116 #define VUMETER_UP          BUTTON_SCROLL_FWD
 117 #define VUMETER_DOWN        BUTTON_SCROLL_BACK
 118 #define LABEL_HELP          "Hold Select"
 119 #define LABEL_QUIT          "HOME"
 120 #define LABEL_MENU          "Select"
 121 #define LABEL_VOLUME        "Scrollwheel"
 122
 123 #elif (CONFIG_KEYPAD == SANSA_C200_PAD)
 124 #define VUMETER_QUIT BUTTON_POWER
 125 #define VUMETER_HELP BUTTON_REC
 126 #define VUMETER_MENU BUTTON_SELECT
 127 #define VUMETER_UP BUTTON_VOL_UP
 128 #define VUMETER_DOWN BUTTON_VOL_DOWN
 129 #define LABEL_HELP "REC"
 130 #define LABEL_QUIT "POWER"
 131 #define LABEL_MENU "SELECT"
 132 #define LABEL_VOLUME "VOL UP/DN"
 133
 134 #elif (CONFIG_KEYPAD == SANSA_CLIP_PAD)
 135 #define VUMETER_QUIT BUTTON_POWER
 136 #define VUMETER_HELP BUTTON_HOME
 137 #define VUMETER_MENU BUTTON_SELECT
 138 #define VUMETER_UP BUTTON_VOL_UP
 139 #define VUMETER_DOWN BUTTON_VOL_DOWN
 140 #define LABEL_HELP "HOME"
 141 #define LABEL_QUIT "POWER"
 142 #define LABEL_MENU "SELECT"
 143 #define LABEL_VOLUME "VOL UP/DN"
 144
 145 #elif (CONFIG_KEYPAD == SANSA_M200_PAD)
 146 #define VUMETER_QUIT BUTTON_POWER
 147 #define VUMETER_HELP (BUTTON_SELECT | BUTTON_UP)
 148 #define VUMETER_MENU (BUTTON_SELECT | BUTTON_REL)
 149 #define VUMETER_UP BUTTON_VOL_UP
 150 #define VUMETER_DOWN BUTTON_VOL_DOWN
 151 #define LABEL_HELP "SELECT + UP"
 152 #define LABEL_QUIT "POWER"
 153 #define LABEL_MENU "SELECT"
 154 #define LABEL_VOLUME "VOL UP/DN"
 155
 156 #elif CONFIG_KEYPAD == IAUDIO_X5M5_PAD
 157 #define VUMETER_QUIT BUTTON_POWER
 158 #define VUMETER_HELP BUTTON_PLAY
 159 #define VUMETER_MENU BUTTON_SELECT
 160 #define VUMETER_UP BUTTON_UP
 161 #define VUMETER_DOWN BUTTON_DOWN
 162 #define LABEL_HELP "PLAY"
 163 #define LABEL_QUIT "POWER"
 164 #define LABEL_MENU "SELECT"
 165 #define LABEL_VOLUME "UP/DOWN"
 166
 167 #elif CONFIG_KEYPAD == IRIVER_H10_PAD
 168 #define VUMETER_QUIT BUTTON_POWER
 169 #define VUMETER_HELP BUTTON_PLAY
 170 #define VUMETER_MENU BUTTON_REW
 171 #define VUMETER_UP BUTTON_SCROLL_UP
 172 #define VUMETER_DOWN BUTTON_SCROLL_DOWN
 173 #define LABEL_HELP "PLAY"
 174 #define LABEL_QUIT "POWER"
 175 #define LABEL_MENU "REW"
 176 #define LABEL_VOLUME "Scroller"
 177
 178 #elif (CONFIG_KEYPAD == GIGABEAT_S_PAD)
 179 #define VUMETER_QUIT BUTTON_BACK
 180 #define VUMETER_HELP BUTTON_NEXT
 181 #define VUMETER_MENU BUTTON_MENU
 182 #define VUMETER_UP BUTTON_UP
 183 #define VUMETER_DOWN BUTTON_DOWN
 184 #define LABEL_HELP "NEXT"
 185 #define LABEL_QUIT "BACK"
 186 #define LABEL_MENU "MENU"
 187 #define LABEL_VOLUME "UP/DOWN"
 188
 189 #elif (CONFIG_KEYPAD == MROBE100_PAD)
 190 #define VUMETER_QUIT BUTTON_POWER
 191 #define VUMETER_HELP BUTTON_DISPLAY
 192 #define VUMETER_MENU BUTTON_MENU
 193 #define VUMETER_UP BUTTON_UP
 194 #define VUMETER_DOWN BUTTON_DOWN
 195 #define LABEL_HELP "DISPLAY"
 196 #define LABEL_QUIT "POWER"
 197 #define LABEL_MENU "MENU"
 198 #define LABEL_VOLUME "UP/DOWN"
 199
 200 #elif CONFIG_KEYPAD == IAUDIO_M3_PAD
 201 #define VUMETER_QUIT BUTTON_RC_REC
 202 #define VUMETER_HELP BUTTON_RC_MODE
 203 #define VUMETER_MENU BUTTON_RC_MENU
 204 #define VUMETER_UP BUTTON_RC_VOL_UP
 205 #define VUMETER_DOWN BUTTON_RC_VOL_DOWN
 206 #define LABEL_HELP "MODE"
 207 #define LABEL_QUIT "REC"
 208 #define LABEL_MENU "MENU"
 209 #define LABEL_VOLUME "VOL UP/DN"
 210
 211 #elif CONFIG_KEYPAD == COWON_D2_PAD
 212 #define VUMETER_QUIT BUTTON_POWER
 213 #define VUMETER_MENU BUTTON_MENU
 214 #define LABEL_QUIT "POWER"
 215 #define LABEL_MENU "MENU"
 216
 217 #elif CONFIG_KEYPAD == CREATIVEZVM_PAD
 218 #define VUMETER_QUIT BUTTON_BACK
 219 #define VUMETER_HELP BUTTON_SELECT
 220 #define VUMETER_MENU BUTTON_MENU
 221 #define VUMETER_UP BUTTON_UP
 222 #define VUMETER_DOWN BUTTON_DOWN
 223 #define LABEL_HELP "MIDDLE"
 224 #define LABEL_QUIT "BACK"
 225 #define LABEL_MENU "MENU"
 226 #define LABEL_VOLUME "UP/DOWN"
 227
 228 #elif CONFIG_KEYPAD == PHILIPS_HDD1630_PAD
 229 #define VUMETER_QUIT BUTTON_POWER
 230 #define VUMETER_HELP BUTTON_VIEW
 231 #define VUMETER_MENU BUTTON_MENU
 232 #define VUMETER_UP BUTTON_UP
 233 #define VUMETER_DOWN BUTTON_DOWN
 234 #define LABEL_HELP "VIEW"
 235 #define LABEL_QUIT "POWER"
 236 #define LABEL_MENU "MENU"
 237 #define LABEL_VOLUME "UP/DOWN"
 238
 239 #elif CONFIG_KEYPAD == PHILIPS_HDD6330_PAD
 240 #define VUMETER_QUIT BUTTON_POWER
 241 #define VUMETER_HELP BUTTON_NEXT
 242 #define VUMETER_MENU BUTTON_MENU
 243 #define VUMETER_UP BUTTON_UP
 244 #define VUMETER_DOWN BUTTON_DOWN
 245 #define LABEL_HELP "NEXT"
 246 #define LABEL_QUIT "QUIT"
 247 #define LABEL_MENU "MENU"
 248 #define LABEL_VOLUME "UP/DOWN"
 249
 250 #elif CONFIG_KEYPAD == PHILIPS_SA9200_PAD
 251 #define VUMETER_QUIT BUTTON_POWER
 252 #define VUMETER_HELP BUTTON_RIGHT
 253 #define VUMETER_MENU BUTTON_MENU
 254 #define VUMETER_UP BUTTON_UP
 255 #define VUMETER_DOWN BUTTON_DOWN
 256 #define LABEL_HELP "RIGHT"
 257 #define LABEL_QUIT "POWER"
 258 #define LABEL_MENU "MENU"
 259 #define LABEL_VOLUME "UP/DOWN"
 260
 261 #elif CONFIG_KEYPAD == ONDAVX747_PAD
 262 #define VUMETER_QUIT BUTTON_POWER
 263 #define VUMETER_MENU BUTTON_MENU
 264 #define LABEL_QUIT "POWER"
 265 #define LABEL_MENU "MENU"
 266
 267 #elif CONFIG_KEYPAD == ONDAVX777_PAD
 268 #define VUMETER_QUIT BUTTON_POWER
 269 #define LABEL_QUIT "POWER"
 270
 271 #elif CONFIG_KEYPAD == MROBE500_PAD
 272 #define VUMETER_QUIT BUTTON_POWER
 273 #define LABEL_QUIT "POWER"
 274
 275 #elif CONFIG_KEYPAD == SAMSUNG_YH_PAD
 276 #define VUMETER_QUIT       BUTTON_REC
 277 #define VUMETER_HELP       BUTTON_PLAY
 278 #define VUMETER_MENU       BUTTON_LEFT
 279 #define VUMETER_UP         BUTTON_UP
 280 #define VUMETER_DOWN       BUTTON_DOWN
 281 #define LABEL_HELP "PLAY"
 282 #define LABEL_QUIT "REC"
 283 #define LABEL_MENU "LEFT"
 284 #define LABEL_VOLUME "UP/DOWN"
 285
 286 #elif CONFIG_KEYPAD == PBELL_VIBE500_PAD
 287 #define VUMETER_QUIT BUTTON_REC
 288 #define VUMETER_HELP BUTTON_PLAY
 289 #define VUMETER_MENU BUTTON_MENU
 290 #define VUMETER_UP   BUTTON_UP
 291 #define VUMETER_DOWN BUTTON_DOWN
 292 #define LABEL_HELP "PLAY"
 293 #define LABEL_QUIT "REC"
 294 #define LABEL_MENU "MENU"
 295 #define LABEL_VOLUME "UP/DOWN"
 296
 297 #elif CONFIG_KEYPAD == MPIO_HD200_PAD
 298 #define VUMETER_QUIT (BUTTON_REC|BUTTON_PLAY)
 299 #define VUMETER_HELP BUTTON_PLAY
 300 #define VUMETER_MENU BUTTON_FUNC
 301 #define VUMETER_UP BUTTON_VOL_UP
 302 #define VUMETER_DOWN BUTTON_VOL_DOWN
 303 #define LABEL_HELP "PLAY"
 304 #define LABEL_QUIT "MENU"
 305 #define LABEL_MENU "FUNC"
 306 #define LABEL_VOLUME "UP/DOWN"
 307
 308 #elif CONFIG_KEYPAD == MPIO_HD300_PAD
 309 #define VUMETER_QUIT (BUTTON_REC|BUTTON_REPEAT)
 310 #define VUMETER_HELP BUTTON_PLAY
 311 #define VUMETER_MENU BUTTON_MENU
 312 #define VUMETER_UP BUTTON_UP
 313 #define VUMETER_DOWN BUTTON_DOWN
 314 #define LABEL_HELP "PLAY"
 315 #define LABEL_QUIT "REC..."
 316 #define LABEL_MENU "MENU"
 317 #define LABEL_VOLUME "UP/DOWN"
 318
 319 #else
 320 #error No keymap defined!
 321 #endif
 322
 323 #ifdef HAVE_TOUCHSCREEN
 324 #ifndef VUMETER_QUIT
 325 #define VUMETER_QUIT      BUTTON_TOPLEFT
 326 #define LABEL_QUIT        "TOPLEFT"
 327 #endif
 328 #ifndef VUMETER_HELP
 329 #define VUMETER_HELP      BUTTON_CENTER
 330 #define LABEL_HELP        "CENTRE"
 331 #endif
 332 #ifndef VUMETER_MENU
 333 #define VUMETER_MENU      BUTTON_TOPRIGHT
 334 #define LABEL_MENU        "TOPRIGHT"
 335 #endif
 336 #ifndef VUMETER_UP
 337 #define VUMETER_UP        BUTTON_TOPMIDDLE
 338 #endif
 339 #ifndef VUMETER_DOWN
 340 #define VUMETER_DOWN      BUTTON_BOTTOMMIDDLE
 341 #endif
 342 #ifndef LABEL_VOLUME
 343 #define LABEL_VOLUME      "UP/DOWN"
 344 #endif
 345 #endif
 346
 347 #if defined(SIMULATOR) && (CONFIG_CODEC != SWCODEC)
 348 #define mas_codec_readreg(x) rand()%MAX_PEAK
 349 #endif
 350
 351 /* Defines x positions on a logarithmic (dBfs) scale. */
 352 unsigned char analog_db_scale[LCD_WIDTH/2];
 353
 354 /* Define's y positions, to make the needle arch, like a real needle would. */
 355 unsigned char y_values[LCD_WIDTH/2];
 356
 357 const unsigned char digital_db_scale[] =
 358 {0,2,3,5,5,6,6,6,7,7,7,7,8,8,8,8,8,9,9,9,9,9,9,9,9,10,10,
 359 10,10,10,10,10,10,10,10,10,11,11,11,11,11,11,11,11};
 360
 361 const unsigned char needle_cover[] =
 362 {0x18, 0x1c, 0x1c, 0x1e, 0x1e, 0x1f, 0x1f, 0x1f, 0x1e, 0x1e, 0x1c, 0x1c, 0x18};
 363
 364 const unsigned char sound_speaker[] = {0x18,0x24,0x42,0xFF};
 365 const unsigned char sound_low_level[] = {0x24,0x18};
 366 const unsigned char sound_med_level[] = {0x42,0x3C};
 367 const unsigned char sound_high_level[] = {0x81,0x7E};
 368 const unsigned char sound_max_level[] = {0x0E,0xDF,0x0E};
 369
 370 const int half_width = LCD_WIDTH / 2;
 371 const int quarter_width = LCD_WIDTH / 4;
 372 const int half_height = LCD_HEIGHT / 2;
 373
 374 /* approx ratio of the previous hard coded values */
 375 const int analog_mini_1 = (LCD_WIDTH / 2)*0.1;
 376 const int analog_mini_2 = (LCD_WIDTH / 2)*0.25;
 377 const int analog_mini_3 = (LCD_WIDTH / 2)*0.4;
 378 const int analog_mini_4 = (LCD_WIDTH / 2)*0.75;
 379
 380 const int digital_block_width = LCD_WIDTH / 11;
 381 const int digital_block_gap = (int)(LCD_WIDTH / 11) / 10;
 382 /* ammount to lead in on left so 11x blocks are centered - is often 0 */
 383 const int digital_lead = (LCD_WIDTH - (((int)(LCD_WIDTH / 11))*11) ) / 2;
 384
 385 const int digital_block_height = (LCD_HEIGHT - 54) / 2 ;
 386
 387 #define ANALOG 0 /* The two meter types */
 388 #define DIGITAL 1
 389
 390 int left_needle_top_y;
 391 int left_needle_top_x;
 392 int last_left_needle_top_x;
 393 int right_needle_top_y;
 394 int right_needle_top_x;
 395 int last_right_needle_top_x = LCD_WIDTH / 2;
 396
 397 int num_left_leds;
 398 int num_right_leds;
 399 int last_num_left_leds;
 400 int last_num_right_leds;
 401
 402 int i;
 403 #ifdef HAVE_LCD_COLOR
 404 int screen_foreground;
 405 #endif
 406
 407 #define MAX_PEAK 0x8000
 408
 409 /* gap at the top for left/right etc */
 410 #define NEEDLE_TOP 25
 411
 412 /* pow(M_E, 5) * 65536 */
 413 #define E_POW_5 9726404
 414
 415 struct saved_settings {
 416     int meter_type;
 417     bool analog_use_db_scale;
 418     bool digital_use_db_scale;
 419     bool analog_minimeters;
 420     bool digital_minimeters;
 421     int analog_decay;
 422     int digital_decay;
 423 } vumeter_settings;
 424
 425 void reset_settings(void) {
 426     vumeter_settings.meter_type=ANALOG;
 427     vumeter_settings.analog_use_db_scale=true;
 428     vumeter_settings.digital_use_db_scale=true;
 429     vumeter_settings.analog_minimeters=true;
 430     vumeter_settings.digital_minimeters=false;
 431     vumeter_settings.analog_decay=3;
 432     vumeter_settings.digital_decay=0;
 433 }
 434
 435 void calc_scales(void)
 436 {
 437     unsigned int fx_log_factor = E_POW_5/half_width;
 438     unsigned int y,z;
 439
 440     long j;
 441     long k;
 442     int nh = LCD_HEIGHT - NEEDLE_TOP;
 443     long nh2 = nh*nh;
 444
 445     for (i=1; i <= half_width; i++)
 446     {
 447         /* analog scale */
 448         y = (half_width/5)*fp16_log(i*fx_log_factor);
 449
 450         /* better way of checking for negative values? */
 451         z = y>>16;
 452         if (z > LCD_WIDTH)
 453             z = 0;
 454
 455         analog_db_scale[i-1] = z;
 456         /* play nice */
 457         rb->yield();
 458
 459         /* y values (analog needle co-ords) */
 460         j = i - (int)(half_width/2);
 461         k = nh2 - ( j * j );
 462
 463         /* fsqrt+1 seems to give a closer approximation */
 464         y_values[i-1] = LCD_HEIGHT - (fp_sqrt(k, 16)>>8) - 1;
 465         rb->yield();
 466     }
 467 }
 468
 469 void load_settings(void) {
 470     int fp = rb->open(PLUGIN_DEMOS_DIR "/.vu_meter", O_RDONLY);
 471     if(fp>=0) {
 472             rb->read(fp, &vumeter_settings, sizeof(struct saved_settings));
 473             rb->close(fp);
 474     }
 475     else {
 476         reset_settings();
 477         rb->splash(HZ, "Press " LABEL_HELP " for help");
 478     }
 479 }
 480
 481 void save_settings(void) {
 482     int fp = rb->creat(PLUGIN_DEMOS_DIR "/.vu_meter", 0666);
 483     if(fp >= 0) {
 484         rb->write (fp, &vumeter_settings, sizeof(struct saved_settings));
 485         rb->close(fp);
 486     }
 487 }
 488
 489 void change_volume(int delta) {
 490     int minvol = rb->sound_min(SOUND_VOLUME);
 491     int maxvol = rb->sound_max(SOUND_VOLUME);
 492     int vol = rb->global_settings->volume + delta;
 493
 494     if (vol > maxvol) vol = maxvol;
 495     else if (vol < minvol) vol = minvol;
 496     if (vol != rb->global_settings->volume) {
 497         rb->sound_set(SOUND_VOLUME, vol);
 498         rb->global_settings->volume = vol;
 499         rb->lcd_putsxyf(0,0, "%d", vol);
 500         rb->lcd_update();
 501         rb->sleep(HZ/12);
 502     }
 503 }
 504
 505 static bool vu_meter_menu(void)
 506 {
 507     int selection;
 508     bool menu_quit = false;
 509     bool exit = false;
 510
 511     MENUITEM_STRINGLIST(menu,"VU Meter Menu",NULL,"Meter Type","Scale",
 512                         "Minimeters","Decay Speed","Playback Control",
 513                         "Quit");
 514
 515     static const struct opt_items meter_type_option[2] = {
 516         { "Analog", -1 },
 517         { "Digital", -1 },
 518     };
 519
 520     static const struct opt_items decay_speed_option[7] = {
 521         { "No Decay", -1 },
 522         { "Very Fast", -1 },
 523         { "Fast", -1 },
 524         { "Medium", -1 },
 525         { "Medium-Slow", -1 },
 526         { "Slow", -1 },
 527         { "Very Slow", -1 },
 528     };
 529
 530     while (!menu_quit) {
 531         switch(rb->do_menu(&menu, &selection, NULL, false))
 532         {
 533             case 0:
 534                 rb->set_option("Meter Type", &vumeter_settings.meter_type, INT,
 535                                meter_type_option, 2, NULL);
 536                 break;
 537
 538             case 1:
 539                 if(vumeter_settings.meter_type==ANALOG)
 540                 {
 541                     rb->set_bool_options("Scale", &vumeter_settings.analog_use_db_scale,
 542                                          "dBfs", -1, "Linear", -1, NULL);
 543                 }
 544                 else
 545                 {
 546                     rb->set_bool_options("Scale", &vumeter_settings.digital_use_db_scale,
 547                                          "dBfs", -1, "Linear", -1, NULL);
 548                 }
 549                 break;
 550
 551             case 2:
 552                 if(vumeter_settings.meter_type==ANALOG)
 553                 {
 554                     rb->set_bool("Enable Minimeters",
 555                                  &vumeter_settings.analog_minimeters);
 556                 }
 557                 else
 558                 {
 559                     rb->set_bool("Enable Minimeters",
 560                                  &vumeter_settings.digital_minimeters);
 561                 }
 562                 break;
 563
 564             case 3:
 565                 if(vumeter_settings.meter_type==ANALOG)
 566                 {
 567                     rb->set_option("Decay Speed", &vumeter_settings.analog_decay, INT,
 568                                decay_speed_option, 7, NULL);
 569                 }
 570                 else
 571                 {
 572                     rb->set_option("Decay Speed", &vumeter_settings.digital_decay, INT,
 573                                decay_speed_option, 7, NULL);
 574                 }
 575                 break;
 576
 577             case 4:
 578                 playback_control(NULL);
 579                 break;
 580
 581             case 5:
 582                 exit = true;
 583                 /* fall through to exit the menu */
 584             default:
 585                 menu_quit = true;
 586                 break;
 587         }
 588     }
 589     /* the menu uses the userfont, set it back to sysfont */
 590     rb->lcd_setfont(FONT_SYSFIXED);
 591     return exit;
 592 }
 593
 594 void draw_analog_minimeters(void) {
 595     rb->lcd_mono_bitmap(sound_speaker, quarter_width-28, 12, 4, 8);
 596     rb->lcd_set_drawmode(DRMODE_FG);
 597     if(analog_mini_1<left_needle_top_x)
 598         rb->lcd_mono_bitmap(sound_low_level, quarter_width-23, 12, 2, 8);
 599     if(analog_mini_2<left_needle_top_x)
 600         rb->lcd_mono_bitmap(sound_med_level, quarter_width-21, 12, 2, 8);
 601     if(analog_mini_3<left_needle_top_x)
 602         rb->lcd_mono_bitmap(sound_high_level, quarter_width-19, 12, 2, 8);
 603     if(analog_mini_4<left_needle_top_x)
 604         rb->lcd_mono_bitmap(sound_max_level, quarter_width-16, 12, 3, 8);
 605
 606     rb->lcd_set_drawmode(DRMODE_SOLID);
 607     rb->lcd_mono_bitmap(sound_speaker, quarter_width+half_width-30, 12, 4, 8);
 608     rb->lcd_set_drawmode(DRMODE_FG);
 609     if(analog_mini_1<(right_needle_top_x-half_width))
 610         rb->lcd_mono_bitmap(sound_low_level, quarter_width+half_width-25, 12, 2, 8);
 611     if(analog_mini_2<(right_needle_top_x-half_width))
 612         rb->lcd_mono_bitmap(sound_med_level, quarter_width+half_width-23, 12, 2, 8);
 613     if(analog_mini_3<(right_needle_top_x-half_width))
 614         rb->lcd_mono_bitmap(sound_high_level, quarter_width+half_width-21, 12, 2, 8);
 615     if(analog_mini_4<(right_needle_top_x-half_width))
 616         rb->lcd_mono_bitmap(sound_max_level, quarter_width+half_width-18, 12, 3, 8);
 617     rb->lcd_set_drawmode(DRMODE_SOLID);
 618 }
 619
 620 void draw_digital_minimeters(void) {
 621 #ifdef HAVE_LCD_COLOR
 622     rb->lcd_set_foreground(LCD_RGBPACK(255, 255 - 23 * num_left_leds, 0));
 623 #endif
 624     rb->lcd_mono_bitmap(sound_speaker, 34, half_height-8, 4, 8);
 625     rb->lcd_set_drawmode(DRMODE_FG);
 626     if(1<num_left_leds)
 627         rb->lcd_mono_bitmap(sound_low_level, 39, half_height-8, 2, 8);
 628     if(2<num_left_leds)
 629         rb->lcd_mono_bitmap(sound_med_level, 41, half_height-8, 2, 8);
 630     if(5<num_left_leds)
 631         rb->lcd_mono_bitmap(sound_high_level, 43, half_height-8, 2, 8);
 632     if(8<num_left_leds)
 633         rb->lcd_mono_bitmap(sound_max_level, 46, half_height-8, 3, 8);
 634
 635 #ifdef HAVE_LCD_COLOR
 636     rb->lcd_set_foreground(LCD_RGBPACK(255, 255 - 23 * num_right_leds, 0));
 637 #endif
 638     rb->lcd_set_drawmode(DRMODE_SOLID);
 639     rb->lcd_mono_bitmap(sound_speaker, 34, half_height+8, 4, 8);
 640     rb->lcd_set_drawmode(DRMODE_FG);
 641     if(1<(num_right_leds))
 642         rb->lcd_mono_bitmap(sound_low_level, 39, half_height+8, 2, 8);
 643     if(2<(num_right_leds))
 644         rb->lcd_mono_bitmap(sound_med_level, 41, half_height+8, 2, 8);
 645     if(5<(num_right_leds))
 646         rb->lcd_mono_bitmap(sound_high_level, 43, half_height+8, 2, 8);
 647     if(8<(num_right_leds))
 648         rb->lcd_mono_bitmap(sound_max_level, 46, half_height+8, 3, 8);
 649     rb->lcd_set_drawmode(DRMODE_SOLID);
 650
 651 #ifdef HAVE_LCD_COLOR
 652     rb->lcd_set_foreground(screen_foreground);
 653 #endif
 654 }
 655
 656 void analog_meter(void) {
 657
 658 #if (CONFIG_CODEC == MAS3587F) || (CONFIG_CODEC == MAS3539F)
 659     int left_peak = rb->mas_codec_readreg(0xC);
 660     int right_peak = rb->mas_codec_readreg(0xD);
 661 #elif (CONFIG_CODEC == SWCODEC)
 662     int left_peak, right_peak;
 663     rb->pcm_calculate_peaks(&left_peak, &right_peak);
 664 #endif
 665
 666     if(vumeter_settings.analog_use_db_scale) {
 667         left_needle_top_x = analog_db_scale[left_peak * half_width / MAX_PEAK];
 668         right_needle_top_x = analog_db_scale[right_peak * half_width / MAX_PEAK] + half_width;
 669     }
 670     else {
 671         left_needle_top_x = left_peak * half_width / MAX_PEAK;
 672         right_needle_top_x = right_peak * half_width / MAX_PEAK + half_width;
 673     }
 674
 675     /* Makes a decay on the needle */
 676     left_needle_top_x = (left_needle_top_x+last_left_needle_top_x*vumeter_settings.analog_decay)
 677                         /(vumeter_settings.analog_decay+1);
 678     right_needle_top_x = (right_needle_top_x+last_right_needle_top_x*vumeter_settings.analog_decay)
 679                          /(vumeter_settings.analog_decay+1);
 680
 681     last_left_needle_top_x = left_needle_top_x;
 682     last_right_needle_top_x = right_needle_top_x;
 683
 684     left_needle_top_y = y_values[left_needle_top_x];
 685     right_needle_top_y = y_values[right_needle_top_x-half_width];
 686
 687     /* Needles */
 688     rb->lcd_drawline(quarter_width, LCD_HEIGHT-1, left_needle_top_x, left_needle_top_y);
 689     rb->lcd_drawline((quarter_width+half_width), LCD_HEIGHT-1, right_needle_top_x, right_needle_top_y);
 690
 691     if(vumeter_settings.analog_minimeters)
 692         draw_analog_minimeters();
 693
 694     /* Needle covers */
 695     rb->lcd_set_drawmode(DRMODE_FG);
 696     rb->lcd_mono_bitmap(needle_cover, quarter_width-6, LCD_HEIGHT-5, 13, 5);
 697     rb->lcd_mono_bitmap(needle_cover, half_width+quarter_width-6, LCD_HEIGHT-5, 13, 5);
 698     rb->lcd_set_drawmode(DRMODE_SOLID);
 699
 700     /* Show Left/Right */
 701     rb->lcd_putsxy(quarter_width-12, 12, "Left");
 702     rb->lcd_putsxy(half_width+quarter_width-12, 12, "Right");
 703
 704     /* Line above/below  the Left/Right text */
 705     rb->lcd_hline(0,LCD_WIDTH-1,9);
 706     rb->lcd_hline(0,LCD_WIDTH-1,21);
 707
 708     for(i=0; i<half_width; i++) {
 709         rb->lcd_drawpixel(i, (y_values[i])-2);
 710         rb->lcd_drawpixel(i+half_width, (y_values[i])-2);
 711     }
 712 }
 713
 714 void digital_meter(void) {
 715 #if (CONFIG_CODEC == MAS3587F) || (CONFIG_CODEC == MAS3539F)
 716     int left_peak = rb->mas_codec_readreg(0xC);
 717     int right_peak = rb->mas_codec_readreg(0xD);
 718 #elif (CONFIG_CODEC == SWCODEC)
 719     int left_peak, right_peak;
 720     rb->pcm_calculate_peaks(&left_peak, &right_peak);
 721 #endif
 722
 723     if(vumeter_settings.digital_use_db_scale) {
 724         num_left_leds = digital_db_scale[left_peak * 44 / MAX_PEAK];
 725         num_right_leds = digital_db_scale[right_peak * 44 / MAX_PEAK];
 726     }
 727     else {
 728         num_left_leds = left_peak * 11 / MAX_PEAK;
 729         num_right_leds = right_peak * 11 / MAX_PEAK;
 730     }
 731
 732     num_left_leds = (num_left_leds+last_num_left_leds*vumeter_settings.digital_decay)
 733                     /(vumeter_settings.digital_decay+1);
 734     num_right_leds = (num_right_leds+last_num_right_leds*vumeter_settings.digital_decay)
 735                      /(vumeter_settings.digital_decay+1);
 736
 737     last_num_left_leds = num_left_leds;
 738     last_num_right_leds = num_right_leds;
 739
 740     rb->lcd_set_drawmode(DRMODE_FG);
 741     /* LEDS */
 742     for(i=0; i<num_left_leds; i++) {
 743 #ifdef HAVE_LCD_COLOR
 744         rb->lcd_set_foreground(LCD_RGBPACK(255, 255 - 23 * i, 0));
 745 #endif
 746         rb->lcd_fillrect((digital_lead + (i*digital_block_width)),
 747             14, digital_block_width - digital_block_gap, digital_block_height);
 748     }
 749
 750     for(i=0; i<num_right_leds; i++) {
 751 #ifdef HAVE_LCD_COLOR
 752         rb->lcd_set_foreground(LCD_RGBPACK(255, 255 - 23 * i, 0));
 753 #endif
 754         rb->lcd_fillrect((digital_lead + (i*digital_block_width)),
 755             (half_height + 20), digital_block_width - digital_block_gap,
 756             digital_block_height);
 757     }
 758
 759 #ifdef HAVE_LCD_COLOR
 760     rb->lcd_set_foreground(screen_foreground);
 761 #endif
 762     rb->lcd_set_drawmode(DRMODE_SOLID);
 763
 764     if(vumeter_settings.digital_minimeters)
 765         draw_digital_minimeters();
 766
 767     /* Lines above/below where the LEDS are */
 768     rb->lcd_hline(0,LCD_WIDTH-1,12);
 769     rb->lcd_hline(0,LCD_WIDTH-1,half_height-12);
 770
 771     rb->lcd_hline(0,LCD_WIDTH-1,half_height+18);
 772     rb->lcd_hline(0,LCD_WIDTH-1,LCD_HEIGHT-6);
 773
 774     /* Show Left/Right */
 775     rb->lcd_putsxy(2, half_height-8, "Left");
 776     rb->lcd_putsxy(2, half_height+8, "Right");
 777
 778     /* Line in the middle */
 779     rb->lcd_hline(0,LCD_WIDTH-1,half_height+3);
 780 }
 781
 782 enum plugin_status plugin_start(const void* parameter) {
 783     int button;
 784     int lastbutton = BUTTON_NONE;
 785
 786     (void) parameter;
 787
 788     calc_scales();
 789
 790     load_settings();
 791     rb->lcd_setfont(FONT_SYSFIXED);
 792 #ifdef HAVE_LCD_COLOR
 793     screen_foreground = rb->lcd_get_foreground();
 794 #endif
 795
 796     while (1)
 797     {
 798         rb->lcd_clear_display();
 799
 800         rb->lcd_putsxy(half_width-23, 0, "VU Meter");
 801
 802         if(vumeter_settings.meter_type==ANALOG)
 803             analog_meter();
 804         else
 805             digital_meter();
 806
 807         rb->lcd_update();
 808
 809         button = rb->button_get_w_tmo(1);
 810         switch (button)
 811         {
 812 #ifdef VUMETER_RC_QUIT
 813             case VUMETER_RC_QUIT:
 814 #endif
 815             case VUMETER_QUIT:
 816                 save_settings();
 817                 return PLUGIN_OK;
 818                 break;
 819
 820             case VUMETER_HELP:
 821 #ifdef VUMETER_HELP_PRE
 822                 if (lastbutton != VUMETER_HELP_PRE)
 823                     break;
 824 #endif
 825                 rb->lcd_clear_display();
 826                 rb->lcd_puts(0, 0, LABEL_QUIT ": Exit");
 827                 rb->lcd_puts(0, 1, LABEL_MENU ": Settings");
 828                 rb->lcd_puts(0, 2, LABEL_VOLUME ": Volume");
 829                 rb->lcd_update();
 830                 rb->sleep(HZ*3);
 831                 break;
 832
 833             case VUMETER_MENU:
 834
 835 #ifdef VUMETER_MENU2
 836             case VUMETER_MENU2:
 837 #endif
 838
 839 #ifdef VUMETER_MENU_PRE
 840                 if (lastbutton != VUMETER_MENU_PRE)
 841                     break;
 842 #endif
 843                 if(vu_meter_menu())
 844                     return PLUGIN_OK;
 845                 break;
 846
 847             case VUMETER_UP:
 848             case VUMETER_UP | BUTTON_REPEAT:
 849                 change_volume(1);
 850                 break;
 851
 852             case VUMETER_DOWN:
 853             case VUMETER_DOWN | BUTTON_REPEAT:
 854                 change_volume(-1);
 855                 break;
 856
 857             default:
 858                 if(rb->default_event_handler(button) == SYS_USB_CONNECTED)
 859                     return PLUGIN_USB_CONNECTED;
 860                 break;
 861         }
 862         if (button != BUTTON_NONE)
 863             lastbutton = button;
 864     }
 865 }