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 "fixedpoint.h"
  22
  23 #if defined(HAVE_LCD_BITMAP)
  24
  25 PLUGIN_HEADER
  26
  27 /* variable button definitions */
  28 #if CONFIG_KEYPAD == RECORDER_PAD
  29 #define VUMETER_QUIT BUTTON_OFF
  30 #define VUMETER_HELP BUTTON_ON
  31 #define VUMETER_MENU BUTTON_F1
  32 #define VUMETER_MENU_EXIT BUTTON_F1
  33 #define VUMETER_MENU_EXIT2 BUTTON_OFF
  34 #define VUMETER_UP BUTTON_UP
  35 #define VUMETER_DOWN BUTTON_DOWN
  36 #define LABEL_HELP "ON"
  37 #define LABEL_QUIT "OFF"
  38 #define LABEL_MENU "F1"
  39 #define LABEL_VOLUME "UP/DOWN"
  40
  41 #elif CONFIG_KEYPAD == ARCHOS_AV300_PAD
  42 #define VUMETER_QUIT BUTTON_OFF
  43 #define VUMETER_HELP BUTTON_ON
  44 #define VUMETER_MENU BUTTON_F1
  45 #define VUMETER_MENU_EXIT BUTTON_F1
  46 #define VUMETER_MENU_EXIT2 BUTTON_OFF
  47 #define VUMETER_UP BUTTON_UP
  48 #define VUMETER_DOWN BUTTON_DOWN
  49 #define LABEL_HELP "ON"
  50 #define LABEL_QUIT "OFF"
  51 #define LABEL_MENU "F1"
  52 #define LABEL_VOLUME "UP/DOWN"
  53
  54 #elif CONFIG_KEYPAD == ONDIO_PAD
  55 #define VUMETER_QUIT BUTTON_OFF
  56 #define VUMETER_HELP_PRE BUTTON_MENU
  57 #define VUMETER_HELP (BUTTON_MENU | BUTTON_REL)
  58 #define VUMETER_MENU_PRE BUTTON_MENU
  59 #define VUMETER_MENU (BUTTON_MENU | BUTTON_REPEAT)
  60 #define VUMETER_MENU_EXIT BUTTON_MENU
  61 #define VUMETER_MENU_EXIT2 BUTTON_OFF
  62 #define VUMETER_UP BUTTON_UP
  63 #define VUMETER_DOWN BUTTON_DOWN
  64 #define LABEL_HELP "MODE"
  65 #define LABEL_QUIT "OFF"
  66 #define LABEL_MENU "MODE.."
  67 #define LABEL_VOLUME "UP/DOWN"
  68
  69 #elif (CONFIG_KEYPAD == IRIVER_H100_PAD) || \
  70       (CONFIG_KEYPAD == IRIVER_H300_PAD)
  71 #define VUMETER_QUIT BUTTON_OFF
  72 #define VUMETER_HELP BUTTON_ON
  73 #define VUMETER_MENU BUTTON_SELECT
  74 #define VUMETER_MENU2 BUTTON_MODE
  75 #define VUMETER_MENU_EXIT BUTTON_SELECT
  76 #define VUMETER_MENU_EXIT2 BUTTON_OFF
  77 #define VUMETER_UP BUTTON_UP
  78 #define VUMETER_DOWN BUTTON_DOWN
  79 #define LABEL_HELP "PLAY"
  80 #define LABEL_QUIT "STOP"
  81 #define LABEL_MENU "SELECT,MODE"
  82 #define LABEL_VOLUME "UP/DOWN"
  83
  84 #define VUMETER_RC_QUIT BUTTON_RC_STOP
  85
  86 #elif (CONFIG_KEYPAD == IPOD_4G_PAD) || \
  87       (CONFIG_KEYPAD == IPOD_3G_PAD) || \
  88       (CONFIG_KEYPAD == IPOD_1G2G_PAD)
  89 #define VUMETER_QUIT BUTTON_MENU
  90 #define VUMETER_HELP BUTTON_PLAY
  91 #define VUMETER_MENU BUTTON_SELECT
  92 #define VUMETER_MENU_EXIT BUTTON_SELECT
  93 #define VUMETER_MENU_EXIT2 BUTTON_MENU
  94 #define VUMETER_UP BUTTON_SCROLL_FWD
  95 #define VUMETER_DOWN BUTTON_SCROLL_BACK
  96 #define LABEL_HELP "PLAY"
  97 #define LABEL_QUIT "MENU"
  98 #define LABEL_MENU "SELECT"
  99 #define LABEL_VOLUME "Wheel"
 100
 101 #elif (CONFIG_KEYPAD == GIGABEAT_PAD)
 102 #define VUMETER_QUIT BUTTON_POWER
 103 #define VUMETER_HELP BUTTON_A
 104 #define VUMETER_MENU BUTTON_MENU
 105 #define VUMETER_MENU_EXIT BUTTON_MENU
 106 #define VUMETER_MENU_EXIT2 BUTTON_POWER
 107 #define VUMETER_UP BUTTON_UP
 108 #define VUMETER_DOWN BUTTON_DOWN
 109 #define LABEL_HELP "A"
 110 #define LABEL_QUIT "POWER"
 111 #define LABEL_MENU "MENU"
 112 #define LABEL_VOLUME "UP/DOWN"
 113
 114 #elif (CONFIG_KEYPAD == SANSA_E200_PAD)
 115 #define VUMETER_QUIT BUTTON_POWER
 116 #define VUMETER_HELP BUTTON_REC
 117 #define VUMETER_MENU BUTTON_SELECT
 118 #define VUMETER_MENU_EXIT BUTTON_SELECT
 119 #define VUMETER_MENU_EXIT2 BUTTON_POWER
 120 #define VUMETER_UP BUTTON_SCROLL_FWD
 121 #define VUMETER_DOWN BUTTON_SCROLL_BACK
 122 #define LABEL_HELP "REC"
 123 #define LABEL_QUIT "POWER"
 124 #define LABEL_MENU "SELECT"
 125 #define LABEL_VOLUME "Wheel"
 126
 127 #elif (CONFIG_KEYPAD == SANSA_C200_PAD)
 128 #define VUMETER_QUIT BUTTON_POWER
 129 #define VUMETER_HELP BUTTON_REC
 130 #define VUMETER_MENU BUTTON_SELECT
 131 #define VUMETER_MENU_EXIT BUTTON_SELECT
 132 #define VUMETER_MENU_EXIT2 BUTTON_POWER
 133 #define VUMETER_UP BUTTON_VOL_UP
 134 #define VUMETER_DOWN BUTTON_VOL_DOWN
 135 #define LABEL_HELP "REC"
 136 #define LABEL_QUIT "POWER"
 137 #define LABEL_MENU "SELECT"
 138 #define LABEL_VOLUME "VOL UP/DN"
 139
 140 #elif CONFIG_KEYPAD == IAUDIO_X5M5_PAD
 141 #define VUMETER_QUIT BUTTON_POWER
 142 #define VUMETER_HELP BUTTON_PLAY
 143 #define VUMETER_MENU BUTTON_SELECT
 144 #define VUMETER_MENU_EXIT BUTTON_SELECT
 145 #define VUMETER_MENU_EXIT2 BUTTON_POWER
 146 #define VUMETER_UP BUTTON_UP
 147 #define VUMETER_DOWN BUTTON_DOWN
 148 #define LABEL_HELP "PLAY"
 149 #define LABEL_QUIT "POWER"
 150 #define LABEL_MENU "SELECT"
 151 #define LABEL_VOLUME "UP/DOWN"
 152
 153 #elif CONFIG_KEYPAD == IRIVER_H10_PAD
 154 #define VUMETER_QUIT BUTTON_POWER
 155 #define VUMETER_HELP BUTTON_PLAY
 156 #define VUMETER_MENU BUTTON_REW
 157 #define VUMETER_MENU_EXIT BUTTON_REW
 158 #define VUMETER_MENU_EXIT2 BUTTON_POWER
 159 #define VUMETER_UP BUTTON_SCROLL_UP
 160 #define VUMETER_DOWN BUTTON_SCROLL_DOWN
 161 #define LABEL_HELP "PLAY"
 162 #define LABEL_QUIT "POWER"
 163 #define LABEL_MENU "REW"
 164 #define LABEL_VOLUME "Scroller"
 165
 166 #elif (CONFIG_KEYPAD == GIGABEAT_S_PAD)
 167 #define VUMETER_QUIT BUTTON_BACK
 168 #define VUMETER_HELP BUTTON_NEXT
 169 #define VUMETER_MENU BUTTON_MENU
 170 #define VUMETER_MENU_EXIT BUTTON_MENU
 171 #define VUMETER_MENU_EXIT2 BUTTON_PLAY
 172 #define VUMETER_UP BUTTON_UP
 173 #define VUMETER_DOWN BUTTON_DOWN
 174 #define LABEL_HELP "NEXT"
 175 #define LABEL_QUIT "BACK"
 176 #define LABEL_MENU "MENU"
 177 #define LABEL_VOLUME "UP/DOWN"
 178
 179 #elif (CONFIG_KEYPAD == MROBE100_PAD)
 180 #define VUMETER_QUIT BUTTON_POWER
 181 #define VUMETER_HELP BUTTON_DISPLAY
 182 #define VUMETER_MENU BUTTON_MENU
 183 #define VUMETER_MENU_EXIT BUTTON_MENU
 184 #define VUMETER_MENU_EXIT2 BUTTON_POWER
 185 #define VUMETER_UP BUTTON_UP
 186 #define VUMETER_DOWN BUTTON_DOWN
 187 #define LABEL_HELP "DISPLAY"
 188 #define LABEL_QUIT "POWER"
 189 #define LABEL_MENU "MENU"
 190 #define LABEL_VOLUME "UP/DOWN"
 191
 192 #elif CONFIG_KEYPAD == IAUDIO_M3_PAD
 193 #define VUMETER_QUIT BUTTON_RC_REC
 194 #define VUMETER_HELP BUTTON_RC_MODE
 195 #define VUMETER_MENU BUTTON_RC_MENU
 196 #define VUMETER_MENU_EXIT BUTTON_RC_MENU
 197 #define VUMETER_MENU_EXIT2 BUTTON_RC_REC
 198 #define VUMETER_UP BUTTON_RC_VOL_UP
 199 #define VUMETER_DOWN BUTTON_RC_VOL_DOWN
 200 #define LABEL_HELP "MODE"
 201 #define LABEL_QUIT "REC"
 202 #define LABEL_MENU "MENU"
 203 #define LABEL_VOLUME "VOL UP/DN"
 204
 205 #elif CONFIG_KEYPAD == COWOND2_PAD
 206 #define VUMETER_QUIT BUTTON_POWER
 207 #define VUMETER_MENU BUTTON_MENU
 208 #define VUMETER_MENU_EXIT BUTTON_POWER
 209 #define LABEL_QUIT "POWER"
 210 #define LABEL_MENU "MENU"
 211
 212 #else
 213 #error No keymap defined!
 214 #endif
 215
 216 #ifdef HAVE_TOUCHSCREEN
 217 #ifndef VUMETER_QUIT
 218 #define VUMETER_QUIT      BUTTON_TOPLEFT
 219 #define LABEL_QUIT        "TOPLEFT"
 220 #endif
 221 #ifndef VUMETER_HELP
 222 #define VUMETER_HELP      BUTTON_CENTER
 223 #define LABEL_HELP        "CENTRE"
 224 #endif
 225 #ifndef VUMETER_MENU
 226 #define VUMETER_MENU      BUTTON_TOPRIGHT
 227 #define LABEL_MENU        "TOPRIGHT"
 228 #endif
 229 #ifndef VUMETER_MENU_EXIT
 230 #define VUMETER_MENU_EXIT BUTTON_TOPLEFT
 231 #endif
 232 #ifndef VUMETER_UP
 233 #define VUMETER_UP        BUTTON_TOPMIDDLE
 234 #endif
 235 #ifndef VUMETER_DOWN
 236 #define VUMETER_DOWN      BUTTON_BOTTOMMIDDLE
 237 #endif
 238 #ifndef LABEL_VOLUME
 239 #define LABEL_VOLUME      "UP/DOWN"
 240 #endif
 241 #endif
 242
 243 const struct plugin_api* rb;
 244
 245 #if defined(SIMULATOR) && (CONFIG_CODEC != SWCODEC)
 246 #define mas_codec_readreg(x) rand()%MAX_PEAK
 247 #endif
 248
 249 /* Defines x positions on a logarithmic (dBfs) scale. */
 250 unsigned char analog_db_scale[LCD_WIDTH/2];
 251
 252 /* Define's y positions, to make the needle arch, like a real needle would. */
 253 unsigned char y_values[LCD_WIDTH/2];
 254
 255 const unsigned char digital_db_scale[] =
 256 {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,
 257 10,10,10,10,10,10,10,10,10,11,11,11,11,11,11,11,11};
 258
 259 const unsigned char needle_cover[] =
 260 {0x18, 0x1c, 0x1c, 0x1e, 0x1e, 0x1f, 0x1f, 0x1f, 0x1e, 0x1e, 0x1c, 0x1c, 0x18};
 261
 262 const unsigned char sound_speaker[] = {0x18,0x24,0x42,0xFF};
 263 const unsigned char sound_low_level[] = {0x24,0x18};
 264 const unsigned char sound_med_level[] = {0x42,0x3C};
 265 const unsigned char sound_high_level[] = {0x81,0x7E};
 266 const unsigned char sound_max_level[] = {0x0E,0xDF,0x0E};
 267
 268 const int half_width = LCD_WIDTH / 2;
 269 const int quarter_width = LCD_WIDTH / 4;
 270 const int half_height = LCD_HEIGHT / 2;
 271
 272 /* approx ratio of the previous hard coded values */
 273 const int analog_mini_1 = (LCD_WIDTH / 2)*0.1;
 274 const int analog_mini_2 = (LCD_WIDTH / 2)*0.25;
 275 const int analog_mini_3 = (LCD_WIDTH / 2)*0.4;
 276 const int analog_mini_4 = (LCD_WIDTH / 2)*0.75;
 277
 278 const int digital_block_width = LCD_WIDTH / 11;
 279 const int digital_block_gap = (int)(LCD_WIDTH / 11) / 10;
 280 /* ammount to lead in on left so 11x blocks are centered - is often 0 */
 281 const int digital_lead = (LCD_WIDTH - (((int)(LCD_WIDTH / 11))*11) ) / 2;
 282
 283 const int digital_block_height = (LCD_HEIGHT - 54) / 2 ;
 284
 285 #define ANALOG 0 /* The two meter types */
 286 #define DIGITAL 1
 287
 288 int left_needle_top_y;
 289 int left_needle_top_x;
 290 int last_left_needle_top_x;
 291 int right_needle_top_y;
 292 int right_needle_top_x;
 293 int last_right_needle_top_x = LCD_WIDTH / 2;
 294
 295 int num_left_leds;
 296 int num_right_leds;
 297 int last_num_left_leds;
 298 int last_num_right_leds;
 299
 300 int i;
 301 #ifdef HAVE_LCD_COLOR
 302 int screen_foreground;
 303 #endif
 304
 305 #define MAX_PEAK 0x8000
 306
 307 /* gap at the top for left/right etc */
 308 #define NEEDLE_TOP 25
 309
 310 /* pow(M_E, 5) * 65536 */
 311 #define E_POW_5 9726404
 312
 313 struct saved_settings {
 314     int meter_type;
 315     bool analog_use_db_scale;
 316     bool digital_use_db_scale;
 317     bool analog_minimeters;
 318     bool digital_minimeters;
 319     int analog_decay;
 320     int digital_decay;
 321 } vumeter_settings;
 322
 323 void reset_settings(void) {
 324     vumeter_settings.meter_type=ANALOG;
 325     vumeter_settings.analog_use_db_scale=true;
 326     vumeter_settings.digital_use_db_scale=true;
 327     vumeter_settings.analog_minimeters=true;
 328     vumeter_settings.digital_minimeters=false;
 329     vumeter_settings.analog_decay=3;
 330     vumeter_settings.digital_decay=0;
 331 }
 332
 333 void calc_scales(void)
 334 {
 335     unsigned int fx_log_factor = E_POW_5/half_width;
 336     unsigned int y,z;
 337
 338     long j;
 339     long k;
 340     int nh = LCD_HEIGHT - NEEDLE_TOP;
 341     long nh2 = nh*nh;
 342
 343     for (i=1; i <= half_width; i++)
 344     {
 345         /* analog scale */
 346         y = (half_width/5)*flog(i*fx_log_factor);
 347
 348         /* better way of checking for negative values? */
 349         z = y>>16;
 350         if (z > LCD_WIDTH)
 351             z = 0;
 352
 353         analog_db_scale[i-1] = z;
 354         /* play nice */
 355         rb->yield();
 356
 357         /* y values (analog needle co-ords) */
 358         j = i - (int)(half_width/2);
 359         k = nh2 - ( j * j );
 360
 361         /* fsqrt+1 seems to give a closer approximation */
 362         y_values[i-1] = LCD_HEIGHT - (fsqrt(k, 16)>>8) - 1;
 363         rb->yield();
 364     }
 365 }
 366
 367 void load_settings(void) {
 368     int fp = rb->open(PLUGIN_DEMOS_DIR "/.vu_meter", O_RDONLY);
 369     if(fp>=0) {
 370             rb->read(fp, &vumeter_settings, sizeof(struct saved_settings));
 371             rb->close(fp);
 372     }
 373     else {
 374         reset_settings();
 375         rb->splash(HZ, "Press " LABEL_HELP " for help");
 376     }
 377 }
 378
 379 void save_settings(void) {
 380     int fp = rb->creat(PLUGIN_DEMOS_DIR "/.vu_meter");
 381     if(fp >= 0) {
 382         rb->write (fp, &vumeter_settings, sizeof(struct saved_settings));
 383         rb->close(fp);
 384     }
 385 }
 386
 387 void change_volume(int delta) {
 388     char curr_vol[5];
 389     int minvol = rb->sound_min(SOUND_VOLUME);
 390     int maxvol = rb->sound_max(SOUND_VOLUME);
 391     int vol = rb->global_settings->volume + delta;
 392
 393     if (vol > maxvol) vol = maxvol;
 394     else if (vol < minvol) vol = minvol;
 395     if (vol != rb->global_settings->volume) {
 396         rb->sound_set(SOUND_VOLUME, vol);
 397         rb->global_settings->volume = vol;
 398         rb->snprintf(curr_vol, sizeof(curr_vol), "%d", vol);
 399         rb->lcd_putsxy(0,0, curr_vol);
 400         rb->lcd_update();
 401         rb->sleep(HZ/12);
 402     }
 403 }
 404
 405 static bool vu_meter_menu(void)
 406 {
 407     int selection;
 408     bool menu_quit = false;
 409     bool exit = false;
 410
 411     MENUITEM_STRINGLIST(menu,"VU Meter Menu",NULL,"Meter Type","Scale",
 412                         "Minimeters","Decay Speed","Quit");
 413
 414     static const struct opt_items meter_type_option[2] = {
 415         { "Analog", -1 },
 416         { "Digital", -1 },
 417     };
 418
 419     static const struct opt_items decay_speed_option[7] = {
 420         { "No Decay", -1 },
 421         { "Very Fast", -1 },
 422         { "Fast", -1 },
 423         { "Medium", -1 },
 424         { "Medium-Slow", -1 },
 425         { "Slow", -1 },
 426         { "Very Slow", -1 },
 427     };
 428
 429     while (!menu_quit) {
 430         switch(rb->do_menu(&menu, &selection, NULL, false))
 431         {
 432             case 0:
 433                 rb->set_option("Meter Type", &vumeter_settings.meter_type, INT,
 434                                meter_type_option, 2, NULL);
 435                 break;
 436
 437             case 1:
 438                 if(vumeter_settings.meter_type==ANALOG)
 439                 {
 440                     rb->set_bool_options("Scale", &vumeter_settings.analog_use_db_scale,
 441                                          "dBfs", -1, "Linear", -1, NULL);
 442                 }
 443                 else
 444                 {
 445                     rb->set_bool_options("Scale", &vumeter_settings.digital_use_db_scale,
 446                                          "dBfs", -1, "Linear", -1, NULL);
 447                 }
 448                 break;
 449
 450             case 2:
 451                 if(vumeter_settings.meter_type==ANALOG)
 452                 {
 453                     rb->set_bool("Enable Minimeters",
 454                                  &vumeter_settings.analog_minimeters);
 455                 }
 456                 else
 457                 {
 458                     rb->set_bool("Enable Minimeters",
 459                                  &vumeter_settings.digital_minimeters);
 460                 }
 461                 break;
 462
 463             case 3:
 464                 if(vumeter_settings.meter_type==ANALOG)
 465                 {
 466                     rb->set_option("Decay Speed", &vumeter_settings.analog_decay, INT,
 467                                decay_speed_option, 7, NULL);
 468                 }
 469                 else
 470                 {
 471                     rb->set_option("Decay Speed", &vumeter_settings.digital_decay, INT,
 472                                decay_speed_option, 7, NULL);
 473                 }
 474                 break;
 475
 476             case 4:
 477                 exit = true;
 478                 /* fall through to exit the menu */
 479             default:
 480                 menu_quit = true;
 481                 break;
 482         }
 483     }
 484     /* the menu uses the userfont, set it back to sysfont */
 485     rb->lcd_setfont(FONT_SYSFIXED);
 486     return exit;
 487 }
 488
 489 void draw_analog_minimeters(void) {
 490     rb->lcd_mono_bitmap(sound_speaker, quarter_width-28, 12, 4, 8);
 491     rb->lcd_set_drawmode(DRMODE_FG);
 492     if(analog_mini_1<left_needle_top_x)
 493         rb->lcd_mono_bitmap(sound_low_level, quarter_width-23, 12, 2, 8);
 494     if(analog_mini_2<left_needle_top_x)
 495         rb->lcd_mono_bitmap(sound_med_level, quarter_width-21, 12, 2, 8);
 496     if(analog_mini_3<left_needle_top_x)
 497         rb->lcd_mono_bitmap(sound_high_level, quarter_width-19, 12, 2, 8);
 498     if(analog_mini_4<left_needle_top_x)
 499         rb->lcd_mono_bitmap(sound_max_level, quarter_width-16, 12, 3, 8);
 500
 501     rb->lcd_set_drawmode(DRMODE_SOLID);
 502     rb->lcd_mono_bitmap(sound_speaker, quarter_width+half_width-30, 12, 4, 8);
 503     rb->lcd_set_drawmode(DRMODE_FG);
 504     if(analog_mini_1<(right_needle_top_x-half_width))
 505         rb->lcd_mono_bitmap(sound_low_level, quarter_width+half_width-25, 12, 2, 8);
 506     if(analog_mini_2<(right_needle_top_x-half_width))
 507         rb->lcd_mono_bitmap(sound_med_level, quarter_width+half_width-23, 12, 2, 8);
 508     if(analog_mini_3<(right_needle_top_x-half_width))
 509         rb->lcd_mono_bitmap(sound_high_level, quarter_width+half_width-21, 12, 2, 8);
 510     if(analog_mini_4<(right_needle_top_x-half_width))
 511         rb->lcd_mono_bitmap(sound_max_level, quarter_width+half_width-18, 12, 3, 8);
 512     rb->lcd_set_drawmode(DRMODE_SOLID);
 513 }
 514
 515 void draw_digital_minimeters(void) {
 516 #ifdef HAVE_LCD_COLOR
 517     rb->lcd_set_foreground(LCD_RGBPACK(255, 255 - 23 * num_left_leds, 0));
 518 #endif
 519     rb->lcd_mono_bitmap(sound_speaker, 34, half_height-8, 4, 8);
 520     rb->lcd_set_drawmode(DRMODE_FG);
 521     if(1<num_left_leds)
 522         rb->lcd_mono_bitmap(sound_low_level, 39, half_height-8, 2, 8);
 523     if(2<num_left_leds)
 524         rb->lcd_mono_bitmap(sound_med_level, 41, half_height-8, 2, 8);
 525     if(5<num_left_leds)
 526         rb->lcd_mono_bitmap(sound_high_level, 43, half_height-8, 2, 8);
 527     if(8<num_left_leds)
 528         rb->lcd_mono_bitmap(sound_max_level, 46, half_height-8, 3, 8);
 529
 530 #ifdef HAVE_LCD_COLOR
 531     rb->lcd_set_foreground(LCD_RGBPACK(255, 255 - 23 * num_right_leds, 0));
 532 #endif
 533     rb->lcd_set_drawmode(DRMODE_SOLID);
 534     rb->lcd_mono_bitmap(sound_speaker, 34, half_height+8, 4, 8);
 535     rb->lcd_set_drawmode(DRMODE_FG);
 536     if(1<(num_right_leds))
 537         rb->lcd_mono_bitmap(sound_low_level, 39, half_height+8, 2, 8);
 538     if(2<(num_right_leds))
 539         rb->lcd_mono_bitmap(sound_med_level, 41, half_height+8, 2, 8);
 540     if(5<(num_right_leds))
 541         rb->lcd_mono_bitmap(sound_high_level, 43, half_height+8, 2, 8);
 542     if(8<(num_right_leds))
 543         rb->lcd_mono_bitmap(sound_max_level, 46, half_height+8, 3, 8);
 544     rb->lcd_set_drawmode(DRMODE_SOLID);
 545
 546 #ifdef HAVE_LCD_COLOR
 547     rb->lcd_set_foreground(screen_foreground);
 548 #endif
 549 }
 550
 551 void analog_meter(void) {
 552
 553 #if (CONFIG_CODEC == MAS3587F) || (CONFIG_CODEC == MAS3539F)
 554     int left_peak = rb->mas_codec_readreg(0xC);
 555     int right_peak = rb->mas_codec_readreg(0xD);
 556 #elif (CONFIG_CODEC == SWCODEC)
 557     int left_peak, right_peak;
 558     rb->pcm_calculate_peaks(&left_peak, &right_peak);
 559 #endif
 560
 561     if(vumeter_settings.analog_use_db_scale) {
 562         left_needle_top_x = analog_db_scale[left_peak * half_width / MAX_PEAK];
 563         right_needle_top_x = analog_db_scale[right_peak * half_width / MAX_PEAK] + half_width;
 564     }
 565     else {
 566         left_needle_top_x = left_peak * half_width / MAX_PEAK;
 567         right_needle_top_x = right_peak * half_width / MAX_PEAK + half_width;
 568     }
 569
 570     /* Makes a decay on the needle */
 571     left_needle_top_x = (left_needle_top_x+last_left_needle_top_x*vumeter_settings.analog_decay)
 572                         /(vumeter_settings.analog_decay+1);
 573     right_needle_top_x = (right_needle_top_x+last_right_needle_top_x*vumeter_settings.analog_decay)
 574                          /(vumeter_settings.analog_decay+1);
 575
 576     last_left_needle_top_x = left_needle_top_x;
 577     last_right_needle_top_x = right_needle_top_x;
 578
 579     left_needle_top_y = y_values[left_needle_top_x];
 580     right_needle_top_y = y_values[right_needle_top_x-half_width];
 581
 582     /* Needles */
 583     rb->lcd_drawline(quarter_width, LCD_HEIGHT-1, left_needle_top_x, left_needle_top_y);
 584     rb->lcd_drawline((quarter_width+half_width), LCD_HEIGHT-1, right_needle_top_x, right_needle_top_y);
 585
 586     if(vumeter_settings.analog_minimeters)
 587         draw_analog_minimeters();
 588
 589     /* Needle covers */
 590     rb->lcd_set_drawmode(DRMODE_FG);
 591     rb->lcd_mono_bitmap(needle_cover, quarter_width-6, LCD_HEIGHT-5, 13, 5);
 592     rb->lcd_mono_bitmap(needle_cover, half_width+quarter_width-6, LCD_HEIGHT-5, 13, 5);
 593     rb->lcd_set_drawmode(DRMODE_SOLID);
 594
 595     /* Show Left/Right */
 596     rb->lcd_putsxy(quarter_width-12, 12, "Left");
 597     rb->lcd_putsxy(half_width+quarter_width-12, 12, "Right");
 598
 599     /* Line above/below  the Left/Right text */
 600     rb->lcd_hline(0,LCD_WIDTH-1,9);
 601     rb->lcd_hline(0,LCD_WIDTH-1,21);
 602
 603     for(i=0; i<half_width; i++) {
 604         rb->lcd_drawpixel(i, (y_values[i])-2);
 605         rb->lcd_drawpixel(i+half_width, (y_values[i])-2);
 606     }
 607 }
 608
 609 void digital_meter(void) {
 610 #if (CONFIG_CODEC == MAS3587F) || (CONFIG_CODEC == MAS3539F)
 611     int left_peak = rb->mas_codec_readreg(0xC);
 612     int right_peak = rb->mas_codec_readreg(0xD);
 613 #elif (CONFIG_CODEC == SWCODEC)
 614     int left_peak, right_peak;
 615     rb->pcm_calculate_peaks(&left_peak, &right_peak);
 616 #endif
 617
 618     if(vumeter_settings.digital_use_db_scale) {
 619         num_left_leds = digital_db_scale[left_peak * 44 / MAX_PEAK];
 620         num_right_leds = digital_db_scale[right_peak * 44 / MAX_PEAK];
 621     }
 622     else {
 623         num_left_leds = left_peak * 11 / MAX_PEAK;
 624         num_right_leds = right_peak * 11 / MAX_PEAK;
 625     }
 626
 627     num_left_leds = (num_left_leds+last_num_left_leds*vumeter_settings.digital_decay)
 628                     /(vumeter_settings.digital_decay+1);
 629     num_right_leds = (num_right_leds+last_num_right_leds*vumeter_settings.digital_decay)
 630                      /(vumeter_settings.digital_decay+1);
 631
 632     last_num_left_leds = num_left_leds;
 633     last_num_right_leds = num_right_leds;
 634
 635     rb->lcd_set_drawmode(DRMODE_FG);
 636     /* LEDS */
 637     for(i=0; i<num_left_leds; i++) {
 638 #ifdef HAVE_LCD_COLOR
 639         rb->lcd_set_foreground(LCD_RGBPACK(255, 255 - 23 * i, 0));
 640 #endif
 641         rb->lcd_fillrect((digital_lead + (i*digital_block_width)),
 642             14, digital_block_width - digital_block_gap, digital_block_height);
 643     }
 644
 645     for(i=0; i<num_right_leds; i++) {
 646 #ifdef HAVE_LCD_COLOR
 647         rb->lcd_set_foreground(LCD_RGBPACK(255, 255 - 23 * i, 0));
 648 #endif
 649         rb->lcd_fillrect((digital_lead + (i*digital_block_width)),
 650             (half_height + 20), digital_block_width - digital_block_gap,
 651             digital_block_height);
 652     }
 653
 654 #ifdef HAVE_LCD_COLOR
 655     rb->lcd_set_foreground(screen_foreground);
 656 #endif
 657     rb->lcd_set_drawmode(DRMODE_SOLID);
 658
 659     if(vumeter_settings.digital_minimeters)
 660         draw_digital_minimeters();
 661
 662     /* Lines above/below where the LEDS are */
 663     rb->lcd_hline(0,LCD_WIDTH-1,12);
 664     rb->lcd_hline(0,LCD_WIDTH-1,half_height-12);
 665
 666     rb->lcd_hline(0,LCD_WIDTH-1,half_height+18);
 667     rb->lcd_hline(0,LCD_WIDTH-1,LCD_HEIGHT-6);
 668
 669     /* Show Left/Right */
 670     rb->lcd_putsxy(2, half_height-8, "Left");
 671     rb->lcd_putsxy(2, half_height+8, "Right");
 672
 673     /* Line in the middle */
 674     rb->lcd_hline(0,LCD_WIDTH-1,half_height+3);
 675 }
 676
 677 enum plugin_status plugin_start(const struct plugin_api* api, const void* parameter) {
 678     int button;
 679     int lastbutton = BUTTON_NONE;
 680
 681     (void) parameter;
 682     rb = api;
 683
 684     calc_scales();
 685
 686     load_settings();
 687     rb->lcd_setfont(FONT_SYSFIXED);
 688 #ifdef HAVE_LCD_COLOR
 689     screen_foreground = rb->lcd_get_foreground();
 690 #endif
 691
 692     while (1)
 693     {
 694         rb->lcd_clear_display();
 695
 696         rb->lcd_putsxy(half_width-23, 0, "VU Meter");
 697
 698         if(vumeter_settings.meter_type==ANALOG)
 699             analog_meter();
 700         else
 701             digital_meter();
 702
 703         rb->lcd_update();
 704
 705         button = rb->button_get_w_tmo(1);
 706         switch (button)
 707         {
 708 #ifdef VUMETER_RC_QUIT
 709             case VUMETER_RC_QUIT:
 710 #endif
 711             case VUMETER_QUIT:
 712                 save_settings();
 713                 return PLUGIN_OK;
 714                 break;
 715
 716             case VUMETER_HELP:
 717 #ifdef VUMETER_HELP_PRE
 718                 if (lastbutton != VUMETER_HELP_PRE)
 719                     break;
 720 #endif
 721                 rb->lcd_clear_display();
 722                 rb->lcd_puts(0, 0, LABEL_QUIT ": Exit");
 723                 rb->lcd_puts(0, 1, LABEL_MENU ": Settings");
 724                 rb->lcd_puts(0, 2, LABEL_VOLUME ": Volume");
 725                 rb->lcd_update();
 726                 rb->sleep(HZ*3);
 727                 break;
 728
 729             case VUMETER_MENU:
 730
 731 #ifdef VUMETER_MENU2
 732             case VUMETER_MENU2:
 733 #endif
 734
 735 #ifdef VUMETER_MENU_PRE
 736                 if (lastbutton != VUMETER_MENU_PRE)
 737                     break;
 738 #endif
 739                 if(vu_meter_menu())
 740                     return PLUGIN_OK;
 741                 break;
 742
 743             case VUMETER_UP:
 744             case VUMETER_UP | BUTTON_REPEAT:
 745                 change_volume(1);
 746                 break;
 747
 748             case VUMETER_DOWN:
 749             case VUMETER_DOWN | BUTTON_REPEAT:
 750                 change_volume(-1);
 751                 break;
 752
 753             default:
 754                 if(rb->default_event_handler(button) == SYS_USB_CONNECTED)
 755                     return PLUGIN_USB_CONNECTED;
 756                 break;
 757         }
 758         if (button != BUTTON_NONE)
 759             lastbutton = button;
 760     }
 761 }
 762 #endif /* #ifdef HAVE_LCD_BITMAP */