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 PLUGIN_HEADER
  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_MENU_EXIT BUTTON_F1
  32 #define VUMETER_MENU_EXIT2 BUTTON_OFF
  33 #define VUMETER_UP BUTTON_UP
  34 #define VUMETER_DOWN BUTTON_DOWN
  35 #define LABEL_HELP "ON"
  36 #define LABEL_QUIT "OFF"
  37 #define LABEL_MENU "F1"
  38 #define LABEL_VOLUME "UP/DOWN"
  39
  40 #elif CONFIG_KEYPAD == ARCHOS_AV300_PAD
  41 #define VUMETER_QUIT BUTTON_OFF
  42 #define VUMETER_HELP BUTTON_ON
  43 #define VUMETER_MENU BUTTON_F1
  44 #define VUMETER_MENU_EXIT BUTTON_F1
  45 #define VUMETER_MENU_EXIT2 BUTTON_OFF
  46 #define VUMETER_UP BUTTON_UP
  47 #define VUMETER_DOWN BUTTON_DOWN
  48 #define LABEL_HELP "ON"
  49 #define LABEL_QUIT "OFF"
  50 #define LABEL_MENU "F1"
  51 #define LABEL_VOLUME "UP/DOWN"
  52
  53 #elif CONFIG_KEYPAD == ONDIO_PAD
  54 #define VUMETER_QUIT BUTTON_OFF
  55 #define VUMETER_HELP_PRE BUTTON_MENU
  56 #define VUMETER_HELP (BUTTON_MENU | BUTTON_REL)
  57 #define VUMETER_MENU_PRE BUTTON_MENU
  58 #define VUMETER_MENU (BUTTON_MENU | BUTTON_REPEAT)
  59 #define VUMETER_MENU_EXIT BUTTON_MENU
  60 #define VUMETER_MENU_EXIT2 BUTTON_OFF
  61 #define VUMETER_UP BUTTON_UP
  62 #define VUMETER_DOWN BUTTON_DOWN
  63 #define LABEL_HELP "MODE"
  64 #define LABEL_QUIT "OFF"
  65 #define LABEL_MENU "MODE.."
  66 #define LABEL_VOLUME "UP/DOWN"
  67
  68 #elif (CONFIG_KEYPAD == IRIVER_H100_PAD) || \
  69       (CONFIG_KEYPAD == IRIVER_H300_PAD)
  70 #define VUMETER_QUIT BUTTON_OFF
  71 #define VUMETER_HELP BUTTON_ON
  72 #define VUMETER_MENU BUTTON_SELECT
  73 #define VUMETER_MENU2 BUTTON_MODE
  74 #define VUMETER_MENU_EXIT BUTTON_SELECT
  75 #define VUMETER_MENU_EXIT2 BUTTON_OFF
  76 #define VUMETER_UP BUTTON_UP
  77 #define VUMETER_DOWN BUTTON_DOWN
  78 #define LABEL_HELP "PLAY"
  79 #define LABEL_QUIT "STOP"
  80 #define LABEL_MENU "SELECT,MODE"
  81 #define LABEL_VOLUME "UP/DOWN"
  82
  83 #define VUMETER_RC_QUIT BUTTON_RC_STOP
  84
  85 #elif (CONFIG_KEYPAD == IPOD_4G_PAD) || \
  86       (CONFIG_KEYPAD == IPOD_3G_PAD) || \
  87       (CONFIG_KEYPAD == IPOD_1G2G_PAD)
  88 #define VUMETER_QUIT BUTTON_MENU
  89 #define VUMETER_HELP BUTTON_PLAY
  90 #define VUMETER_MENU BUTTON_SELECT
  91 #define VUMETER_MENU_EXIT BUTTON_SELECT
  92 #define VUMETER_MENU_EXIT2 BUTTON_MENU
  93 #define VUMETER_UP BUTTON_SCROLL_FWD
  94 #define VUMETER_DOWN BUTTON_SCROLL_BACK
  95 #define LABEL_HELP "PLAY"
  96 #define LABEL_QUIT "MENU"
  97 #define LABEL_MENU "SELECT"
  98 #define LABEL_VOLUME "Wheel"
  99
 100 #elif (CONFIG_KEYPAD == GIGABEAT_PAD)
 101 #define VUMETER_QUIT BUTTON_POWER
 102 #define VUMETER_HELP BUTTON_A
 103 #define VUMETER_MENU BUTTON_MENU
 104 #define VUMETER_MENU_EXIT BUTTON_MENU
 105 #define VUMETER_MENU_EXIT2 BUTTON_POWER
 106 #define VUMETER_UP BUTTON_UP
 107 #define VUMETER_DOWN BUTTON_DOWN
 108 #define LABEL_HELP "A"
 109 #define LABEL_QUIT "POWER"
 110 #define LABEL_MENU "MENU"
 111 #define LABEL_VOLUME "UP/DOWN"
 112
 113 #elif (CONFIG_KEYPAD == SANSA_E200_PAD)
 114 #define VUMETER_QUIT BUTTON_POWER
 115 #define VUMETER_HELP BUTTON_REC
 116 #define VUMETER_MENU BUTTON_SELECT
 117 #define VUMETER_MENU_EXIT BUTTON_SELECT
 118 #define VUMETER_MENU_EXIT2 BUTTON_POWER
 119 #define VUMETER_UP BUTTON_SCROLL_FWD
 120 #define VUMETER_DOWN BUTTON_SCROLL_BACK
 121 #define LABEL_HELP "REC"
 122 #define LABEL_QUIT "POWER"
 123 #define LABEL_MENU "SELECT"
 124 #define LABEL_VOLUME "Wheel"
 125
 126 #elif (CONFIG_KEYPAD == SANSA_FUZE_PAD)
 127 #define VUMETER_QUIT        (BUTTON_HOME|BUTTON_REPEAT)
 128 #define VUMETER_HELP        BUTTON_SELECT|BUTTON_REPEAT
 129 #define VUMETER_MENU        BUTTON_SELECT|BUTTON_REL
 130 #define VUMETER_MENU_EXIT   BUTTON_SELECT
 131 #define VUMETER_MENU_EXIT2  BUTTON_DOWN
 132 #define VUMETER_UP          BUTTON_SCROLL_FWD
 133 #define VUMETER_DOWN        BUTTON_SCROLL_BACK
 134 #define LABEL_HELP          "Hold Select"
 135 #define LABEL_QUIT          "HOME"
 136 #define LABEL_MENU          "Select"
 137 #define LABEL_VOLUME        "Scrollwheel"
 138
 139 #elif (CONFIG_KEYPAD == SANSA_C200_PAD)
 140 #define VUMETER_QUIT BUTTON_POWER
 141 #define VUMETER_HELP BUTTON_REC
 142 #define VUMETER_MENU BUTTON_SELECT
 143 #define VUMETER_MENU_EXIT BUTTON_SELECT
 144 #define VUMETER_MENU_EXIT2 BUTTON_POWER
 145 #define VUMETER_UP BUTTON_VOL_UP
 146 #define VUMETER_DOWN BUTTON_VOL_DOWN
 147 #define LABEL_HELP "REC"
 148 #define LABEL_QUIT "POWER"
 149 #define LABEL_MENU "SELECT"
 150 #define LABEL_VOLUME "VOL UP/DN"
 151
 152 #elif (CONFIG_KEYPAD == SANSA_CLIP_PAD)
 153 #define VUMETER_QUIT BUTTON_POWER
 154 #define VUMETER_HELP BUTTON_HOME
 155 #define VUMETER_MENU BUTTON_SELECT
 156 #define VUMETER_MENU_EXIT BUTTON_SELECT
 157 #define VUMETER_MENU_EXIT2 BUTTON_POWER
 158 #define VUMETER_UP BUTTON_VOL_UP
 159 #define VUMETER_DOWN BUTTON_VOL_DOWN
 160 #define LABEL_HELP "HOME"
 161 #define LABEL_QUIT "POWER"
 162 #define LABEL_MENU "SELECT"
 163 #define LABEL_VOLUME "VOL UP/DN"
 164
 165 #elif (CONFIG_KEYPAD == SANSA_M200_PAD)
 166 #define VUMETER_QUIT BUTTON_POWER
 167 #define VUMETER_HELP (BUTTON_SELECT | BUTTON_UP)
 168 #define VUMETER_MENU (BUTTON_SELECT | BUTTON_REL)
 169 #define VUMETER_MENU_EXIT (BUTTON_SELECT | BUTTON_REL)
 170 #define VUMETER_MENU_EXIT2 BUTTON_POWER
 171 #define VUMETER_UP BUTTON_VOL_UP
 172 #define VUMETER_DOWN BUTTON_VOL_DOWN
 173 #define LABEL_HELP "SELECT + UP"
 174 #define LABEL_QUIT "POWER"
 175 #define LABEL_MENU "SELECT"
 176 #define LABEL_VOLUME "VOL UP/DN"
 177
 178 #elif CONFIG_KEYPAD == IAUDIO_X5M5_PAD
 179 #define VUMETER_QUIT BUTTON_POWER
 180 #define VUMETER_HELP BUTTON_PLAY
 181 #define VUMETER_MENU BUTTON_SELECT
 182 #define VUMETER_MENU_EXIT BUTTON_SELECT
 183 #define VUMETER_MENU_EXIT2 BUTTON_POWER
 184 #define VUMETER_UP BUTTON_UP
 185 #define VUMETER_DOWN BUTTON_DOWN
 186 #define LABEL_HELP "PLAY"
 187 #define LABEL_QUIT "POWER"
 188 #define LABEL_MENU "SELECT"
 189 #define LABEL_VOLUME "UP/DOWN"
 190
 191 #elif CONFIG_KEYPAD == IRIVER_H10_PAD
 192 #define VUMETER_QUIT BUTTON_POWER
 193 #define VUMETER_HELP BUTTON_PLAY
 194 #define VUMETER_MENU BUTTON_REW
 195 #define VUMETER_MENU_EXIT BUTTON_REW
 196 #define VUMETER_MENU_EXIT2 BUTTON_POWER
 197 #define VUMETER_UP BUTTON_SCROLL_UP
 198 #define VUMETER_DOWN BUTTON_SCROLL_DOWN
 199 #define LABEL_HELP "PLAY"
 200 #define LABEL_QUIT "POWER"
 201 #define LABEL_MENU "REW"
 202 #define LABEL_VOLUME "Scroller"
 203
 204 #elif (CONFIG_KEYPAD == GIGABEAT_S_PAD)
 205 #define VUMETER_QUIT BUTTON_BACK
 206 #define VUMETER_HELP BUTTON_NEXT
 207 #define VUMETER_MENU BUTTON_MENU
 208 #define VUMETER_MENU_EXIT BUTTON_MENU
 209 #define VUMETER_MENU_EXIT2 BUTTON_PLAY
 210 #define VUMETER_UP BUTTON_UP
 211 #define VUMETER_DOWN BUTTON_DOWN
 212 #define LABEL_HELP "NEXT"
 213 #define LABEL_QUIT "BACK"
 214 #define LABEL_MENU "MENU"
 215 #define LABEL_VOLUME "UP/DOWN"
 216
 217 #elif (CONFIG_KEYPAD == MROBE100_PAD)
 218 #define VUMETER_QUIT BUTTON_POWER
 219 #define VUMETER_HELP BUTTON_DISPLAY
 220 #define VUMETER_MENU BUTTON_MENU
 221 #define VUMETER_MENU_EXIT BUTTON_MENU
 222 #define VUMETER_MENU_EXIT2 BUTTON_POWER
 223 #define VUMETER_UP BUTTON_UP
 224 #define VUMETER_DOWN BUTTON_DOWN
 225 #define LABEL_HELP "DISPLAY"
 226 #define LABEL_QUIT "POWER"
 227 #define LABEL_MENU "MENU"
 228 #define LABEL_VOLUME "UP/DOWN"
 229
 230 #elif CONFIG_KEYPAD == IAUDIO_M3_PAD
 231 #define VUMETER_QUIT BUTTON_RC_REC
 232 #define VUMETER_HELP BUTTON_RC_MODE
 233 #define VUMETER_MENU BUTTON_RC_MENU
 234 #define VUMETER_MENU_EXIT BUTTON_RC_MENU
 235 #define VUMETER_MENU_EXIT2 BUTTON_RC_REC
 236 #define VUMETER_UP BUTTON_RC_VOL_UP
 237 #define VUMETER_DOWN BUTTON_RC_VOL_DOWN
 238 #define LABEL_HELP "MODE"
 239 #define LABEL_QUIT "REC"
 240 #define LABEL_MENU "MENU"
 241 #define LABEL_VOLUME "VOL UP/DN"
 242
 243 #elif CONFIG_KEYPAD == COWOND2_PAD
 244 #define VUMETER_QUIT BUTTON_POWER
 245 #define VUMETER_MENU BUTTON_MENU
 246 #define VUMETER_MENU_EXIT BUTTON_POWER
 247 #define LABEL_QUIT "POWER"
 248 #define LABEL_MENU "MENU"
 249
 250 #elif CONFIG_KEYPAD == CREATIVEZVM_PAD
 251 #define VUMETER_QUIT BUTTON_BACK
 252 #define VUMETER_HELP BUTTON_SELECT
 253 #define VUMETER_MENU BUTTON_MENU
 254 #define VUMETER_MENU_EXIT BUTTON_MENU
 255 #define VUMETER_UP BUTTON_UP
 256 #define VUMETER_DOWN BUTTON_DOWN
 257 #define LABEL_HELP "MIDDLE"
 258 #define LABEL_QUIT "BACK"
 259 #define LABEL_MENU "MENU"
 260 #define LABEL_VOLUME "UP/DOWN"
 261
 262 #elif CONFIG_KEYPAD == PHILIPS_HDD1630_PAD
 263 #define VUMETER_QUIT BUTTON_POWER
 264 #define VUMETER_HELP BUTTON_VIEW
 265 #define VUMETER_MENU BUTTON_MENU
 266 #define VUMETER_MENU_EXIT BUTTON_MENU
 267 #define VUMETER_MENU_EXIT2 BUTTON_POWER
 268 #define VUMETER_UP BUTTON_UP
 269 #define VUMETER_DOWN BUTTON_DOWN
 270 #define LABEL_HELP "VIEW"
 271 #define LABEL_QUIT "POWER"
 272 #define LABEL_MENU "MENU"
 273 #define LABEL_VOLUME "UP/DOWN"
 274
 275 #elif CONFIG_KEYPAD == ONDAVX747_PAD
 276 #define VUMETER_QUIT BUTTON_POWER
 277 #define VUMETER_MENU BUTTON_MENU
 278 #define VUMETER_MENU_EXIT BUTTON_POWER
 279 #define LABEL_QUIT "POWER"
 280 #define LABEL_MENU "MENU"
 281
 282 #elif CONFIG_KEYPAD == ONDAVX777_PAD
 283 #define VUMETER_QUIT BUTTON_POWER
 284 #define LABEL_QUIT "POWER"
 285
 286 #elif CONFIG_KEYPAD == MROBE500_PAD
 287 #define VUMETER_QUIT BUTTON_POWER
 288 #define LABEL_QUIT "POWER"
 289
 290 #elif CONFIG_KEYPAD == SAMSUNG_YH_PAD
 291 #define VUMETER_QUIT       BUTTON_REC
 292 #define VUMETER_HELP       BUTTON_PLAY
 293 #define VUMETER_MENU       BUTTON_LEFT
 294 #define VUMETER_MENU_EXIT  BUTTON_LEFT
 295 #define VUMETER_MENU_EXIT2 BUTTON_RIGHT
 296 #define VUMETER_UP         BUTTON_UP
 297 #define VUMETER_DOWN       BUTTON_DOWN
 298 #define LABEL_HELP "PLAY"
 299 #define LABEL_QUIT "REC"
 300 #define LABEL_MENU "LEFT"
 301 #define LABEL_VOLUME "UP/DOWN"
 302
 303 #else
 304 #error No keymap defined!
 305 #endif
 306
 307 #ifdef HAVE_TOUCHSCREEN
 308 #ifndef VUMETER_QUIT
 309 #define VUMETER_QUIT      BUTTON_TOPLEFT
 310 #define LABEL_QUIT        "TOPLEFT"
 311 #endif
 312 #ifndef VUMETER_HELP
 313 #define VUMETER_HELP      BUTTON_CENTER
 314 #define LABEL_HELP        "CENTRE"
 315 #endif
 316 #ifndef VUMETER_MENU
 317 #define VUMETER_MENU      BUTTON_TOPRIGHT
 318 #define LABEL_MENU        "TOPRIGHT"
 319 #endif
 320 #ifndef VUMETER_MENU_EXIT
 321 #define VUMETER_MENU_EXIT BUTTON_TOPLEFT
 322 #endif
 323 #ifndef VUMETER_UP
 324 #define VUMETER_UP        BUTTON_TOPMIDDLE
 325 #endif
 326 #ifndef VUMETER_DOWN
 327 #define VUMETER_DOWN      BUTTON_BOTTOMMIDDLE
 328 #endif
 329 #ifndef LABEL_VOLUME
 330 #define LABEL_VOLUME      "UP/DOWN"
 331 #endif
 332 #endif
 333
 334 #if defined(SIMULATOR) && (CONFIG_CODEC != SWCODEC)
 335 #define mas_codec_readreg(x) rand()%MAX_PEAK
 336 #endif
 337
 338 /* Defines x positions on a logarithmic (dBfs) scale. */
 339 unsigned char analog_db_scale[LCD_WIDTH/2];
 340
 341 /* Define's y positions, to make the needle arch, like a real needle would. */
 342 unsigned char y_values[LCD_WIDTH/2];
 343
 344 const unsigned char digital_db_scale[] =
 345 {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,
 346 10,10,10,10,10,10,10,10,10,11,11,11,11,11,11,11,11};
 347
 348 const unsigned char needle_cover[] =
 349 {0x18, 0x1c, 0x1c, 0x1e, 0x1e, 0x1f, 0x1f, 0x1f, 0x1e, 0x1e, 0x1c, 0x1c, 0x18};
 350
 351 const unsigned char sound_speaker[] = {0x18,0x24,0x42,0xFF};
 352 const unsigned char sound_low_level[] = {0x24,0x18};
 353 const unsigned char sound_med_level[] = {0x42,0x3C};
 354 const unsigned char sound_high_level[] = {0x81,0x7E};
 355 const unsigned char sound_max_level[] = {0x0E,0xDF,0x0E};
 356
 357 const int half_width = LCD_WIDTH / 2;
 358 const int quarter_width = LCD_WIDTH / 4;
 359 const int half_height = LCD_HEIGHT / 2;
 360
 361 /* approx ratio of the previous hard coded values */
 362 const int analog_mini_1 = (LCD_WIDTH / 2)*0.1;
 363 const int analog_mini_2 = (LCD_WIDTH / 2)*0.25;
 364 const int analog_mini_3 = (LCD_WIDTH / 2)*0.4;
 365 const int analog_mini_4 = (LCD_WIDTH / 2)*0.75;
 366
 367 const int digital_block_width = LCD_WIDTH / 11;
 368 const int digital_block_gap = (int)(LCD_WIDTH / 11) / 10;
 369 /* ammount to lead in on left so 11x blocks are centered - is often 0 */
 370 const int digital_lead = (LCD_WIDTH - (((int)(LCD_WIDTH / 11))*11) ) / 2;
 371
 372 const int digital_block_height = (LCD_HEIGHT - 54) / 2 ;
 373
 374 #define ANALOG 0 /* The two meter types */
 375 #define DIGITAL 1
 376
 377 int left_needle_top_y;
 378 int left_needle_top_x;
 379 int last_left_needle_top_x;
 380 int right_needle_top_y;
 381 int right_needle_top_x;
 382 int last_right_needle_top_x = LCD_WIDTH / 2;
 383
 384 int num_left_leds;
 385 int num_right_leds;
 386 int last_num_left_leds;
 387 int last_num_right_leds;
 388
 389 int i;
 390 #ifdef HAVE_LCD_COLOR
 391 int screen_foreground;
 392 #endif
 393
 394 #define MAX_PEAK 0x8000
 395
 396 /* gap at the top for left/right etc */
 397 #define NEEDLE_TOP 25
 398
 399 /* pow(M_E, 5) * 65536 */
 400 #define E_POW_5 9726404
 401
 402 struct saved_settings {
 403     int meter_type;
 404     bool analog_use_db_scale;
 405     bool digital_use_db_scale;
 406     bool analog_minimeters;
 407     bool digital_minimeters;
 408     int analog_decay;
 409     int digital_decay;
 410 } vumeter_settings;
 411
 412 void reset_settings(void) {
 413     vumeter_settings.meter_type=ANALOG;
 414     vumeter_settings.analog_use_db_scale=true;
 415     vumeter_settings.digital_use_db_scale=true;
 416     vumeter_settings.analog_minimeters=true;
 417     vumeter_settings.digital_minimeters=false;
 418     vumeter_settings.analog_decay=3;
 419     vumeter_settings.digital_decay=0;
 420 }
 421
 422 void calc_scales(void)
 423 {
 424     unsigned int fx_log_factor = E_POW_5/half_width;
 425     unsigned int y,z;
 426
 427     long j;
 428     long k;
 429     int nh = LCD_HEIGHT - NEEDLE_TOP;
 430     long nh2 = nh*nh;
 431
 432     for (i=1; i <= half_width; i++)
 433     {
 434         /* analog scale */
 435         y = (half_width/5)*fp16_log(i*fx_log_factor);
 436
 437         /* better way of checking for negative values? */
 438         z = y>>16;
 439         if (z > LCD_WIDTH)
 440             z = 0;
 441
 442         analog_db_scale[i-1] = z;
 443         /* play nice */
 444         rb->yield();
 445
 446         /* y values (analog needle co-ords) */
 447         j = i - (int)(half_width/2);
 448         k = nh2 - ( j * j );
 449
 450         /* fsqrt+1 seems to give a closer approximation */
 451         y_values[i-1] = LCD_HEIGHT - (fp_sqrt(k, 16)>>8) - 1;
 452         rb->yield();
 453     }
 454 }
 455
 456 void load_settings(void) {
 457     int fp = rb->open(PLUGIN_DEMOS_DIR "/.vu_meter", O_RDONLY);
 458     if(fp>=0) {
 459             rb->read(fp, &vumeter_settings, sizeof(struct saved_settings));
 460             rb->close(fp);
 461     }
 462     else {
 463         reset_settings();
 464         rb->splash(HZ, "Press " LABEL_HELP " for help");
 465     }
 466 }
 467
 468 void save_settings(void) {
 469     int fp = rb->creat(PLUGIN_DEMOS_DIR "/.vu_meter");
 470     if(fp >= 0) {
 471         rb->write (fp, &vumeter_settings, sizeof(struct saved_settings));
 472         rb->close(fp);
 473     }
 474 }
 475
 476 void change_volume(int delta) {
 477     char curr_vol[5];
 478     int minvol = rb->sound_min(SOUND_VOLUME);
 479     int maxvol = rb->sound_max(SOUND_VOLUME);
 480     int vol = rb->global_settings->volume + delta;
 481
 482     if (vol > maxvol) vol = maxvol;
 483     else if (vol < minvol) vol = minvol;
 484     if (vol != rb->global_settings->volume) {
 485         rb->sound_set(SOUND_VOLUME, vol);
 486         rb->global_settings->volume = vol;
 487         rb->snprintf(curr_vol, sizeof(curr_vol), "%d", vol);
 488         rb->lcd_putsxy(0,0, curr_vol);
 489         rb->lcd_update();
 490         rb->sleep(HZ/12);
 491     }
 492 }
 493
 494 static bool vu_meter_menu(void)
 495 {
 496     int selection;
 497     bool menu_quit = false;
 498     bool exit = false;
 499
 500     MENUITEM_STRINGLIST(menu,"VU Meter Menu",NULL,"Meter Type","Scale",
 501                         "Minimeters","Decay Speed","Playback Control",
 502                         "Quit");
 503
 504     static const struct opt_items meter_type_option[2] = {
 505         { "Analog", -1 },
 506         { "Digital", -1 },
 507     };
 508
 509     static const struct opt_items decay_speed_option[7] = {
 510         { "No Decay", -1 },
 511         { "Very Fast", -1 },
 512         { "Fast", -1 },
 513         { "Medium", -1 },
 514         { "Medium-Slow", -1 },
 515         { "Slow", -1 },
 516         { "Very Slow", -1 },
 517     };
 518
 519     while (!menu_quit) {
 520         switch(rb->do_menu(&menu, &selection, NULL, false))
 521         {
 522             case 0:
 523                 rb->set_option("Meter Type", &vumeter_settings.meter_type, INT,
 524                                meter_type_option, 2, NULL);
 525                 break;
 526
 527             case 1:
 528                 if(vumeter_settings.meter_type==ANALOG)
 529                 {
 530                     rb->set_bool_options("Scale", &vumeter_settings.analog_use_db_scale,
 531                                          "dBfs", -1, "Linear", -1, NULL);
 532                 }
 533                 else
 534                 {
 535                     rb->set_bool_options("Scale", &vumeter_settings.digital_use_db_scale,
 536                                          "dBfs", -1, "Linear", -1, NULL);
 537                 }
 538                 break;
 539
 540             case 2:
 541                 if(vumeter_settings.meter_type==ANALOG)
 542                 {
 543                     rb->set_bool("Enable Minimeters",
 544                                  &vumeter_settings.analog_minimeters);
 545                 }
 546                 else
 547                 {
 548                     rb->set_bool("Enable Minimeters",
 549                                  &vumeter_settings.digital_minimeters);
 550                 }
 551                 break;
 552
 553             case 3:
 554                 if(vumeter_settings.meter_type==ANALOG)
 555                 {
 556                     rb->set_option("Decay Speed", &vumeter_settings.analog_decay, INT,
 557                                decay_speed_option, 7, NULL);
 558                 }
 559                 else
 560                 {
 561                     rb->set_option("Decay Speed", &vumeter_settings.digital_decay, INT,
 562                                decay_speed_option, 7, NULL);
 563                 }
 564                 break;
 565
 566             case 4:
 567                 playback_control(NULL);
 568                 break;
 569
 570             case 5:
 571                 exit = true;
 572                 /* fall through to exit the menu */
 573             default:
 574                 menu_quit = true;
 575                 break;
 576         }
 577     }
 578     /* the menu uses the userfont, set it back to sysfont */
 579     rb->lcd_setfont(FONT_SYSFIXED);
 580     return exit;
 581 }
 582
 583 void draw_analog_minimeters(void) {
 584     rb->lcd_mono_bitmap(sound_speaker, quarter_width-28, 12, 4, 8);
 585     rb->lcd_set_drawmode(DRMODE_FG);
 586     if(analog_mini_1<left_needle_top_x)
 587         rb->lcd_mono_bitmap(sound_low_level, quarter_width-23, 12, 2, 8);
 588     if(analog_mini_2<left_needle_top_x)
 589         rb->lcd_mono_bitmap(sound_med_level, quarter_width-21, 12, 2, 8);
 590     if(analog_mini_3<left_needle_top_x)
 591         rb->lcd_mono_bitmap(sound_high_level, quarter_width-19, 12, 2, 8);
 592     if(analog_mini_4<left_needle_top_x)
 593         rb->lcd_mono_bitmap(sound_max_level, quarter_width-16, 12, 3, 8);
 594
 595     rb->lcd_set_drawmode(DRMODE_SOLID);
 596     rb->lcd_mono_bitmap(sound_speaker, quarter_width+half_width-30, 12, 4, 8);
 597     rb->lcd_set_drawmode(DRMODE_FG);
 598     if(analog_mini_1<(right_needle_top_x-half_width))
 599         rb->lcd_mono_bitmap(sound_low_level, quarter_width+half_width-25, 12, 2, 8);
 600     if(analog_mini_2<(right_needle_top_x-half_width))
 601         rb->lcd_mono_bitmap(sound_med_level, quarter_width+half_width-23, 12, 2, 8);
 602     if(analog_mini_3<(right_needle_top_x-half_width))
 603         rb->lcd_mono_bitmap(sound_high_level, quarter_width+half_width-21, 12, 2, 8);
 604     if(analog_mini_4<(right_needle_top_x-half_width))
 605         rb->lcd_mono_bitmap(sound_max_level, quarter_width+half_width-18, 12, 3, 8);
 606     rb->lcd_set_drawmode(DRMODE_SOLID);
 607 }
 608
 609 void draw_digital_minimeters(void) {
 610 #ifdef HAVE_LCD_COLOR
 611     rb->lcd_set_foreground(LCD_RGBPACK(255, 255 - 23 * num_left_leds, 0));
 612 #endif
 613     rb->lcd_mono_bitmap(sound_speaker, 34, half_height-8, 4, 8);
 614     rb->lcd_set_drawmode(DRMODE_FG);
 615     if(1<num_left_leds)
 616         rb->lcd_mono_bitmap(sound_low_level, 39, half_height-8, 2, 8);
 617     if(2<num_left_leds)
 618         rb->lcd_mono_bitmap(sound_med_level, 41, half_height-8, 2, 8);
 619     if(5<num_left_leds)
 620         rb->lcd_mono_bitmap(sound_high_level, 43, half_height-8, 2, 8);
 621     if(8<num_left_leds)
 622         rb->lcd_mono_bitmap(sound_max_level, 46, half_height-8, 3, 8);
 623
 624 #ifdef HAVE_LCD_COLOR
 625     rb->lcd_set_foreground(LCD_RGBPACK(255, 255 - 23 * num_right_leds, 0));
 626 #endif
 627     rb->lcd_set_drawmode(DRMODE_SOLID);
 628     rb->lcd_mono_bitmap(sound_speaker, 34, half_height+8, 4, 8);
 629     rb->lcd_set_drawmode(DRMODE_FG);
 630     if(1<(num_right_leds))
 631         rb->lcd_mono_bitmap(sound_low_level, 39, half_height+8, 2, 8);
 632     if(2<(num_right_leds))
 633         rb->lcd_mono_bitmap(sound_med_level, 41, half_height+8, 2, 8);
 634     if(5<(num_right_leds))
 635         rb->lcd_mono_bitmap(sound_high_level, 43, half_height+8, 2, 8);
 636     if(8<(num_right_leds))
 637         rb->lcd_mono_bitmap(sound_max_level, 46, half_height+8, 3, 8);
 638     rb->lcd_set_drawmode(DRMODE_SOLID);
 639
 640 #ifdef HAVE_LCD_COLOR
 641     rb->lcd_set_foreground(screen_foreground);
 642 #endif
 643 }
 644
 645 void analog_meter(void) {
 646
 647 #if (CONFIG_CODEC == MAS3587F) || (CONFIG_CODEC == MAS3539F)
 648     int left_peak = rb->mas_codec_readreg(0xC);
 649     int right_peak = rb->mas_codec_readreg(0xD);
 650 #elif (CONFIG_CODEC == SWCODEC)
 651     int left_peak, right_peak;
 652     rb->pcm_calculate_peaks(&left_peak, &right_peak);
 653 #endif
 654
 655     if(vumeter_settings.analog_use_db_scale) {
 656         left_needle_top_x = analog_db_scale[left_peak * half_width / MAX_PEAK];
 657         right_needle_top_x = analog_db_scale[right_peak * half_width / MAX_PEAK] + half_width;
 658     }
 659     else {
 660         left_needle_top_x = left_peak * half_width / MAX_PEAK;
 661         right_needle_top_x = right_peak * half_width / MAX_PEAK + half_width;
 662     }
 663
 664     /* Makes a decay on the needle */
 665     left_needle_top_x = (left_needle_top_x+last_left_needle_top_x*vumeter_settings.analog_decay)
 666                         /(vumeter_settings.analog_decay+1);
 667     right_needle_top_x = (right_needle_top_x+last_right_needle_top_x*vumeter_settings.analog_decay)
 668                          /(vumeter_settings.analog_decay+1);
 669
 670     last_left_needle_top_x = left_needle_top_x;
 671     last_right_needle_top_x = right_needle_top_x;
 672
 673     left_needle_top_y = y_values[left_needle_top_x];
 674     right_needle_top_y = y_values[right_needle_top_x-half_width];
 675
 676     /* Needles */
 677     rb->lcd_drawline(quarter_width, LCD_HEIGHT-1, left_needle_top_x, left_needle_top_y);
 678     rb->lcd_drawline((quarter_width+half_width), LCD_HEIGHT-1, right_needle_top_x, right_needle_top_y);
 679
 680     if(vumeter_settings.analog_minimeters)
 681         draw_analog_minimeters();
 682
 683     /* Needle covers */
 684     rb->lcd_set_drawmode(DRMODE_FG);
 685     rb->lcd_mono_bitmap(needle_cover, quarter_width-6, LCD_HEIGHT-5, 13, 5);
 686     rb->lcd_mono_bitmap(needle_cover, half_width+quarter_width-6, LCD_HEIGHT-5, 13, 5);
 687     rb->lcd_set_drawmode(DRMODE_SOLID);
 688
 689     /* Show Left/Right */
 690     rb->lcd_putsxy(quarter_width-12, 12, "Left");
 691     rb->lcd_putsxy(half_width+quarter_width-12, 12, "Right");
 692
 693     /* Line above/below  the Left/Right text */
 694     rb->lcd_hline(0,LCD_WIDTH-1,9);
 695     rb->lcd_hline(0,LCD_WIDTH-1,21);
 696
 697     for(i=0; i<half_width; i++) {
 698         rb->lcd_drawpixel(i, (y_values[i])-2);
 699         rb->lcd_drawpixel(i+half_width, (y_values[i])-2);
 700     }
 701 }
 702
 703 void digital_meter(void) {
 704 #if (CONFIG_CODEC == MAS3587F) || (CONFIG_CODEC == MAS3539F)
 705     int left_peak = rb->mas_codec_readreg(0xC);
 706     int right_peak = rb->mas_codec_readreg(0xD);
 707 #elif (CONFIG_CODEC == SWCODEC)
 708     int left_peak, right_peak;
 709     rb->pcm_calculate_peaks(&left_peak, &right_peak);
 710 #endif
 711
 712     if(vumeter_settings.digital_use_db_scale) {
 713         num_left_leds = digital_db_scale[left_peak * 44 / MAX_PEAK];
 714         num_right_leds = digital_db_scale[right_peak * 44 / MAX_PEAK];
 715     }
 716     else {
 717         num_left_leds = left_peak * 11 / MAX_PEAK;
 718         num_right_leds = right_peak * 11 / MAX_PEAK;
 719     }
 720
 721     num_left_leds = (num_left_leds+last_num_left_leds*vumeter_settings.digital_decay)
 722                     /(vumeter_settings.digital_decay+1);
 723     num_right_leds = (num_right_leds+last_num_right_leds*vumeter_settings.digital_decay)
 724                      /(vumeter_settings.digital_decay+1);
 725
 726     last_num_left_leds = num_left_leds;
 727     last_num_right_leds = num_right_leds;
 728
 729     rb->lcd_set_drawmode(DRMODE_FG);
 730     /* LEDS */
 731     for(i=0; i<num_left_leds; i++) {
 732 #ifdef HAVE_LCD_COLOR
 733         rb->lcd_set_foreground(LCD_RGBPACK(255, 255 - 23 * i, 0));
 734 #endif
 735         rb->lcd_fillrect((digital_lead + (i*digital_block_width)),
 736             14, digital_block_width - digital_block_gap, digital_block_height);
 737     }
 738
 739     for(i=0; i<num_right_leds; i++) {
 740 #ifdef HAVE_LCD_COLOR
 741         rb->lcd_set_foreground(LCD_RGBPACK(255, 255 - 23 * i, 0));
 742 #endif
 743         rb->lcd_fillrect((digital_lead + (i*digital_block_width)),
 744             (half_height + 20), digital_block_width - digital_block_gap,
 745             digital_block_height);
 746     }
 747
 748 #ifdef HAVE_LCD_COLOR
 749     rb->lcd_set_foreground(screen_foreground);
 750 #endif
 751     rb->lcd_set_drawmode(DRMODE_SOLID);
 752
 753     if(vumeter_settings.digital_minimeters)
 754         draw_digital_minimeters();
 755
 756     /* Lines above/below where the LEDS are */
 757     rb->lcd_hline(0,LCD_WIDTH-1,12);
 758     rb->lcd_hline(0,LCD_WIDTH-1,half_height-12);
 759
 760     rb->lcd_hline(0,LCD_WIDTH-1,half_height+18);
 761     rb->lcd_hline(0,LCD_WIDTH-1,LCD_HEIGHT-6);
 762
 763     /* Show Left/Right */
 764     rb->lcd_putsxy(2, half_height-8, "Left");
 765     rb->lcd_putsxy(2, half_height+8, "Right");
 766
 767     /* Line in the middle */
 768     rb->lcd_hline(0,LCD_WIDTH-1,half_height+3);
 769 }
 770
 771 enum plugin_status plugin_start(const void* parameter) {
 772     int button;
 773     int lastbutton = BUTTON_NONE;
 774
 775     (void) parameter;
 776
 777     calc_scales();
 778
 779     load_settings();
 780     rb->lcd_setfont(FONT_SYSFIXED);
 781 #ifdef HAVE_LCD_COLOR
 782     screen_foreground = rb->lcd_get_foreground();
 783 #endif
 784
 785     while (1)
 786     {
 787         rb->lcd_clear_display();
 788
 789         rb->lcd_putsxy(half_width-23, 0, "VU Meter");
 790
 791         if(vumeter_settings.meter_type==ANALOG)
 792             analog_meter();
 793         else
 794             digital_meter();
 795
 796         rb->lcd_update();
 797
 798         button = rb->button_get_w_tmo(1);
 799         switch (button)
 800         {
 801 #ifdef VUMETER_RC_QUIT
 802             case VUMETER_RC_QUIT:
 803 #endif
 804             case VUMETER_QUIT:
 805                 save_settings();
 806                 return PLUGIN_OK;
 807                 break;
 808
 809             case VUMETER_HELP:
 810 #ifdef VUMETER_HELP_PRE
 811                 if (lastbutton != VUMETER_HELP_PRE)
 812                     break;
 813 #endif
 814                 rb->lcd_clear_display();
 815                 rb->lcd_puts(0, 0, LABEL_QUIT ": Exit");
 816                 rb->lcd_puts(0, 1, LABEL_MENU ": Settings");
 817                 rb->lcd_puts(0, 2, LABEL_VOLUME ": Volume");
 818                 rb->lcd_update();
 819                 rb->sleep(HZ*3);
 820                 break;
 821
 822             case VUMETER_MENU:
 823
 824 #ifdef VUMETER_MENU2
 825             case VUMETER_MENU2:
 826 #endif
 827
 828 #ifdef VUMETER_MENU_PRE
 829                 if (lastbutton != VUMETER_MENU_PRE)
 830                     break;
 831 #endif
 832                 if(vu_meter_menu())
 833                     return PLUGIN_OK;
 834                 break;
 835
 836             case VUMETER_UP:
 837             case VUMETER_UP | BUTTON_REPEAT:
 838                 change_volume(1);
 839                 break;
 840
 841             case VUMETER_DOWN:
 842             case VUMETER_DOWN | BUTTON_REPEAT:
 843                 change_volume(-1);
 844                 break;
 845
 846             default:
 847                 if(rb->default_event_handler(button) == SYS_USB_CONNECTED)
 848                     return PLUGIN_USB_CONNECTED;
 849                 break;
 850         }
 851         if (button != BUTTON_NONE)
 852             lastbutton = button;
 853     }
 854 }