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path: root/apps/plugins/metronome.c
blob: f44ef7f7c6a3cd3aa5c43b8c383955b354b08ac8 (plain)
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/***************************************************************************
 *             __________               __   ___.
 *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
 *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
 *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
 *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
 *                     \/            \/     \/    \/            \/
 * $Id$
 *
 * Copyright (C) 2004 Matthias Wientapper
 *
 * All files in this archive are subject to the GNU General Public License.
 * See the file COPYING in the source tree root for full license agreement.
 *
 * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
 * KIND, either express or implied.
 *
 ****************************************************************************/
#include "plugin.h"
#include "pluginlib_actions.h"

PLUGIN_HEADER

#define METRONOME_QUIT      PLA_QUIT
#define METRONOME_VOL_UP    PLA_UP
#define METRONOME_VOL_DOWN  PLA_DOWN
#define METRONOME_VOL_UP_REP    PLA_UP_REPEAT
#define METRONOME_VOL_DOWN_REP  PLA_DOWN_REPEAT
#define METRONOME_LEFT      PLA_LEFT
#define METRONOME_RIGHT     PLA_RIGHT
#define METRONOME_LEFT_REP      PLA_LEFT_REPEAT
#define METRONOME_RIGHT_REP     PLA_RIGHT_REPEAT
enum {
    METRONOME_PLAY_TAP = LAST_PLUGINLIB_ACTION+1,
#if CONFIG_KEYPAD == ONDIO_PAD
    METRONOME_PAUSE,
#endif
#if (CONFIG_KEYPAD == IRIVER_H100_PAD) || (CONFIG_KEYPAD == IRIVER_H300_PAD)
    METRONOME_SYNC 
#endif
};


#if CONFIG_KEYPAD == ONDIO_PAD
#define METRONOME_TAP       PLA_START
#define METRONOME_MSG_START "start: mode"
#define METRONOME_MSG_STOP "pause: hold mode"
static const struct button_mapping ondio_action[] = 
{
    {METRONOME_PLAY_TAP, BUTTON_MENU|BUTTON_REL, BUTTON_MENU },
    {METRONOME_PAUSE, BUTTON_MENU|BUTTON_REPEAT, BUTTON_NONE },
    {CONTEXT_CUSTOM,BUTTON_NONE,BUTTON_NONE}
};
#else
#define METRONOME_TAP       PLA_FIRE
#define METRONOME_PLAYPAUSE PLA_START
#define METRONOME_MSG_START "press play"
#define METRONOME_MSG_STOP "press pause"

#if (CONFIG_KEYPAD == IRIVER_H100_PAD) || (CONFIG_KEYPAD == IRIVER_H300_PAD)
static const struct button_mapping iriver_syncaction[] =
{
    {METRONOME_SYNC, BUTTON_REC, BUTTON_NONE },
    {CONTEXT_CUSTOM,BUTTON_NONE,BUTTON_NONE}
};
#endif
#endif /* #if CONFIG_KEYPAD == ONDIO_PAD */


static struct plugin_api* rb;

static int bpm      = 120;
static int period   = 0;
static int minitick = 0;

static bool sound_active = false;
static bool sound_paused = true;

static char buffer[30];

static bool reset_tap = false;    
static int tap_count    = 0;
static int tap_time     = 0;
static int tap_timeout  = 0;

int bpm_step_counter = 0;

void led(bool on)
{
#if CONFIG_CPU == SH7034
    if(on)
        or_b(0x40, &PBDRL);
    else
        and_b(~0x40, &PBDRL);
#else
    (void)on;
#endif
}

#if CONFIG_CODEC != SWCODEC

#define MET_IS_PLAYING rb->mp3_is_playing()
#define MET_PLAY_STOP rb->mp3_play_stop()

/* tick sound from a metronome */
static unsigned char sound[] = {
255,251, 80,196,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,
  0, 73,110,102,111,  0,  0,  0, 15,  0,  0,  0,  4,  0,  0,  4, 19,  0, 64, 64,
 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64,
 64, 64, 64,128,128,128,128,128,128,128,128,128,128,128,128,128,128,128,128,128,
128,128,128,128,128,128,128,128,192,192,192,192,192,192,192,192,192,192,192,192,
192,192,192,192,192,192,192,192,192,192,192,192,192,255,255,255,255,255,255,255,
255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,  0,  0,  0,
 58, 76, 65, 77, 69, 51, 46, 57, 50, 32,  1,137,  0,  0,  0,  0,  0,  0,  0,  0,
  2, 64, 36,  5,191, 65,  0,  0,  0,  0,  0,  4, 19,168,187,153, 93,  0,  0,  0,
  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,
  0,  0,  0,  0,  0,  0,  0,  0,255,251, 80,196,  0,  0, 10, 81, 57, 65,184,120,
128,  1, 95,159,239,191,144, 96,  0,  0,128,  0,  0,  0,  0,  0,  0, 48, 24, 12,
  0,  0, 15,175,185,222, 39,  7,126, 46, 50,191,243,197,255,247, 62, 92,111,252,
115, 15, 27,140,153,159,247,242,124, 44, 92,164,177, 57,175,255,236, 79,164, 98,
 68,205, 69,160, 64, 15,251,127,128,168, 38, 92,138, 17, 67,196, 80,184,223,255,
255,161,117, 33, 55, 83,191,255,193,240, 33, 57,114, 17,  0,  2,  0,  0,  0, 10,
191, 10,  8,196,209, 75, 55,236,177,115,238,223,203, 61,176, 89, 78,101,219,118,
118, 65,154,126,187,239,241,127,247,245, 59, 18,219, 94,105,245,221,161,173, 91,
191, 27,255,247, 18,124, 71,117,139,133,170,221,227,251,135,110,236,255,183,219,
100, 78,184,125,212,131, 65, 95,212,245,145, 67, 77, 10,153,250,132,195,  4,138,
224,  0,  0,  0,158,107, 42, 65,227,185, 90,158, 86,  6,155, 77,255,251, 82,196,
  8,  0, 10,136,185,103,  4, 61, 48, 65,118,173, 44, 60,147, 10,152,107, 49, 74,
 18,208, 91, 23,178,196,220, 25, 64,233,230, 36,170,  0,210,219,131, 40,165, 22,
 86,195, 23,145, 33, 16,138, 99,109,117,245, 71,162, 69, 42,220,164, 91, 72,165,
 26, 69,146,150,199,222, 73,102,148, 29, 19,  5, 65, 86,  6,150,120,180, 26, 88,
 75, 18,191,255,250,171,  4,  8,132,140,  0,  0, 20,186,242,162, 66,100, 62, 86,
206, 86,255, 26,203,201,255,255,141,128,166,196,175,133,  9, 70,188,146,175,133,
 60, 17,217,229, 90, 27, 87, 93, 34, 76,113,185, 84,213, 56, 17,170, 83, 75,180,
203,116,101, 93, 90, 99, 35,174,230, 42,125, 12,128, 79, 93, 81,234, 67, 66,137,
105,157,157, 23, 71, 53, 40,250,204,105, 89,203,107,250, 63,174, 89,133, 81,140,
  0, 52, 17, 16,  0,  0, 18,111, 20, 92, 32,213, 48,179, 50, 26,244,179, 27,230,
154, 34,133,177, 88,255,251, 82,196, 13,  0, 10,125, 65, 85,244, 85,  0,  1,210,
172,231,  7, 31, 32,  0, 37, 11, 68, 69, 13, 37, 48,210, 23, 69, 36,122,143,148,
211,141, 44, 76,135, 72,148,195,135,174, 84,149,167, 30,198,183,255,213,111, 61,
 27,155,191,177,207,246,163,255,230, 30,137,219,255,182,186,185,239, 52,148,171,
 75, 63,167, 44,  0,  2, 81,190, 41,253,248,182,180, 23, 43,127,217,161, 41,191,
 36,199, 40,153,108, 66,224,131,192,217, 12, 67,217,  6,218,240,108,112, 63, 33,
 93, 12,  8, 43, 66, 42, 74, 12,215,135,100,172, 33, 65,172, 29, 98,  4, 83, 34,
 40, 17,111,133,255, 18,145, 60, 59,136,145, 92,106,144, 34,185, 58, 76,154,254,
146,144,115,  4, 84,180,142,178, 38, 79,253, 34,237,105, 31,106, 70, 73, 36,138,
 73,164,181,127,253,182, 82,217, 26,245,117,163,255,219, 50,115,223,245, 92,198,
165,173,  0, 15,249,132, 50, 19,157, 85,121,153,245, 51,255,251, 82,196,  6,131,
 74, 96,134,156, 92, 19,  0,  8,  0,  0, 52,128,  0,  0,  0, 60,226, 73, 57, 26,
249,253,122,211,128, 65, 86, 10,  1,  9,195,128, 36, 72,225,196,146,115, 73, 18,
 75, 65, 77,  9,  5,200, 43, 16,163,129, 77,  9,  5,200,110, 39,127,255,255,255,
255,255,255,255,252, 83, 66,142,140, 21,136, 46, 64,166,133, 28, 12, 21,136, 46,
 64,166,133, 21,  6, 76, 65, 77, 69, 51, 46, 57, 50, 85, 85, 85, 85, 85, 85, 85,
 85, 85, 85, 85, 85, 85, 85, 85, 85, 85, 85, 85, 85, 85, 85, 85, 85, 85, 85, 85,
 85, 85, 85, 85, 85, 85, 85, 85, 85, 85, 85, 85, 85, 85, 85, 85, 85, 85, 85, 85,
 85, 85, 85, 85, 85, 85, 85, 85, 85, 85, 85, 85, 85, 85, 85, 85, 85, 85, 85, 85,
 85, 85, 85, 85, 85, 85, 85, 85, 85, 85, 85, 85, 85, 85, 85, 85, 85, 85, 85, 85,
 85, 85, 85, 85, 85, 85, 85, 85, 85, 85, 85, 85, 85, 85, 85, 85, 85, 85, 85, 85,
    85, 85, 85};
    
void callback(unsigned char** start, int* size){
    (void)start; /* unused parameter, avoid warning */
    *size = NULL; /* end of data */
    sound_active = false;
    led(0);
}

void play_tock(void){
    sound_active = true;
    led(1);
    rb->mp3_play_data(sound, sizeof(sound), callback);
    rb->mp3_play_pause(true); /* kickoff audio */ 
}

#else

#define MET_IS_PLAYING rb->pcm_is_playing()
#define MET_PLAY_STOP rb->audio_stop()

static signed short sound[] = {
     1,    -1,     1,    -1,     0,     0,     0,     1,    -1,     0,     0,
     0,    -1,     2,    -2,     2,    -1,     0,     0,     0,     0,     1,
    -1,     0,    -1,     1,     0,     0,     0,     1,    -1,     1,    -2,
     1,    -1,     1,     0,     0,     0,     0,     0,     0,     0,     0,
     0,     0,    -1,     2,    -2,     2,    -1,     0,     1,    -1,     1,
    -1,     0,     0,     0,     0,     1,    -2,     2,    -2,     1,     0,
     1,    -1,     0,     1,    -1,     0,     1,    -2,     2,    -1,     0,
     0,     0,    -1,     1,     0,     0,     0,     0,     0,     0,     0,
     0,    -1,     1,    -1,     2,    -2,     2,    -2,     2,    -2,     1,
     0,     0,     0,     1,    -2,     2,    -2,     1,     0,     0,     0,
     0,     0,     0,    -1,     1,     0,    -1,     2,    -2,     2,    -1,
     0,     0,     0,    -1,     1,    -1,     1,    -1,     2,    -2,     1,
     0,    -1,     2,    -2,     2,    -2,     1,     0,     0,     0,     0,
     0,     0,     0,     0,     1,    -1,     0,     0,    -1,     1,     0,
     0,     1,    -1,     0,     0,     0,     0,     0,     0,     0,     0,
     1,    -2,     2,    -1,     0,     0,     0,     0,     0,     1,    -2,
     1,     0,     0,     0,     0,     0,     1,    -1,     0,     0,    -1,
     2,    -2,     2,    -2,     2,    -1,     0,     0,    -1,     1,    -1,
     1,    -1,     1,    -1,     1,    -1,     1,     0,     0,    -1,     2,
    -2,     1,     0,     0,     0,     0,     0,     1,    -1,     0,     0,
    -1,     1,     0,     0,     0,     0,     0,     0,     1,    -2,     2,
    -2,     2,    -1,     1,    -1,     1,    -2,     2,    -2,     2,    -2,
     2,    -2,     2,    -2,     2,    -1,     0,     0,     0,    -1,     2,
    -2,     2,    -1,     1,    -1,     1,    -2,     2,    -2,     1,     0,
     1,    -1,     1,    -2,     1,    -1,     1,     0,     0,     0,     0,
     0,     0,     0,     0,    -1,     1,     0,    -1,     2,    -1,     0,
     0,    -1,     1,     0,    -1,     2,    -2,     1,     0,     0,     0,
     0,     0,     0,    -1,     2,    -1,     1,    -1,     0,     0,     1,
    -2,     2,    -1,     1,    -1,     0,     1,    -1,     0,     0,     0,
     0,     0,     0,    -1,     1,     0,     0,     0,     0,    -1,     2,
    -2,     2,    -1,     0,     1,    -1,     0,     0,     0,     0,     0,
     0,     0,     0,     1,    -1,     1,    -1,     0,     0,     0,     0,
     0,     1,    -1,     1,    -1,     0,     1,    -2,     2,    -1,     0,
     1,    -2,     2,    -2,     2,    -2,     2,    -1,     0,     1,    -1,
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   217,   191,   187,   142,    76,    12,   -71,  -137,  -169,  -189,  -183,
  -106,     8,    87,   134,   154,    99,    45,    84,   178,   241,   277,
   270,   209,   125,    50,   -62,  -190,  -254,  -235,  -179,  -106,   -18,
    33,    46,    32,     9,   -22,   -35,   -13,    22,    64,    78,    29,
   -63,  -133,  -169,  -189,  -166,  -121,   -98,   -67,    -3,    15,     5,
    44,   100,   108,   108,   114,    64,   -46,  -141,  -245,  -316,  -233,
   -59,    21,   -10,   -20,    -6,    -7,    -6,     7,    -3,    -2,     9,
    -2,   -25,   -17,    -1,     1,    -8,    -1,    -5,   -11,   -13,   -10,
   -14,   -12,    -3,    11,     6,     2,     1,    -9,   -13,     0,    11,
    12,    16,    17,     9,    -4,    -9,   -13,   -11,     1,     7,     2,
    13,    13,    -3,     0,    10,     9,     3,     6,     4,    -4,    -9,
    -7,    -2,     6,     5,   -14,   -19,    -9,   -11,   -10,    -5,   -16,
   -22,    -4,    17,    16,     1,   -14,   -17,    -6,     6,     3,    -2,
    -5,   -10,   -11,    -1,    -2,   -12,   -12,    -4,     9,    14,    15,
     6,     9,    13,     7,    -6,    -5,     5,     3,    -6,   -10,   -14,
   -11,    -4,     4,     3,    -1,     3,    -1,   -12,   -13,     2,     9,
    -1,    -7,    -1,     1,     1,    12,     7,     2,    -1,     3,     3,
     7,     7,     3,    -1,     4,     8,     3,     6,     6,     2,    -3,
    -2,    -5,    -6,     1,    -2,    -6,    -9,   -10,    -7,    -5,     3,
    -4,   -10,    -7,     5,     7,     1,     0,     0,    -8,    -7,    -5,
    -1,     2,     4,     6,    -1,    -2,     5,     5,     0,    -1,     0,
     1,    -8,    -8,   -12,    -9,    -4,    -2,    -3,    -4,    -1,     2,
     3,     3,    -3,    -4,    -5,     3,     6,    -1,    -5,   -14,   -13,
   -12,   -13,   -11,     0,     9,    13,    10,     9,     7,     1,     1,
    -2,     1,     3,     3,     2,     0,    -2,     0,     0,     3,     1,
     4,     2,     4,     0,     1,    -1,    -1,    -1,     0,    -2,    -2,
    -1,    -2,     2,    -1,     1,     0,     1,     2,     2,     1,     1,
     1,     0,    -1,    -1,     0,    -1,     1,    -2,     2,     0,     1,
     0,    -1,    -1,    -1,     1,     0,     0,    -1,    -2,    -2,    -1,
    -2,    -1,     2,     1,     3,     0,     3,     0,    -1,     1,    -1,
     1,     0,     1,     0,    -1,     1,    -2,     2,    -1,     1,     0,
     1,     0,     0,     0,     0,     0,    -1,     1,    -2,     1,    -1,
     1,     0,     0,     0,     0,     0,     0,     1,    -1,     1,     0,
     0,     0,    -1,     0,     0,     0,     0,     0,     0,     0,    -1,
     0,     0,     1,     0,     0,     0,    -1,     0,    -1,     1,    -1,
     1,     0,    -1,     2,    -1,     1,    -1,     1,    -1,     0,     1,
    -1,     0,     1,    -1,     2,    -2,     1,    -1,     1,    -1,     0,
     1,    -1,     1,     0,    -1,     1,     0,    -1,     1,    -1,     0,
     1,    -1,     1,     0,    -1,     1,    -1,     0,     0,     1,    -1,
     1,    -1,     1,     0,    -1,     1,    -1,     1,     0,    -1,     1,
    -1,     1,    -1,     0,     1,    -1,     1,    -1,     1,    -2,     2,
    -1,     0,     1,    -1,     0,     1,    -1,     1,     0,     0,     0,
     0,     0,     0,    -1,     1,    -1,     1,    -1,     1,    -1,     1,
    -1,     1,    -1,     0,     1,    -2,     2,    -1,     0,     0,     1,
    -1,     1,     0,    -1,     0,     0,     1,    -2,     2,    -1,     0,
     1,    -1,     0,     1,    -1,     1,    -1,     1,    -1,     1,    -1,
     1,    -1,     0,     1,    -1,     1,     0,    -1,     0,     0,     1,
    -1,     0,     0,     1,    -1,     0,     0,     0,     1,    -1,     1,
    -1,     0,     1,    -1,     1,    -1,     0,     0,     0,     1,    -1,
     1,    -1,     1,    -1,     1,     0,     0,     0,    -1,     0,     1,
    -1,     1,    -1,     0,     0,     0,     0,     1,    -1,     1,    -1,
     1,    -1,     1,    -1,     1,    -1,     1,    -1,     1,    -1,     1,
    -1,     0,     1,    -1,     1,     0,    -1,     1,     0,    -1,     1,
    -1,     1,    -1,     1,    -1,     1,    -1,     0,     1,    -2,     2,
     0,    -1,     1,    -1,     1,    -1,     1,     0,    -1,     1,    -1,
     0,     1,    -2,     2,    -1,     1,     0,     0,     0,    -1,     1,
    -1,     1,    -1,     0,     0,     0,     1,    -1,     1,     0,    -1,
     1,    -1,     0,     1,    -1,     1,    -1,     1,    -1,     0,     1,
    -1,     1,    -1,     0,     0,     1,    -1,     1,    -1,     0,     1,
    -2,     2,    -1,     0,     1,    -2,     2,     0,     0,     0,    -1,
     1,    -1,     0,     1,    -1,     1,    -1,     1,    -1,     1,    -1,
     0,     1,    -1,     1,    -1,     0,     0,     1,    -1,     1,    -2,
     2,    -2,     3,    -3,     3,    -2,     0,     1,    -1,     0,     0,
     1,    -1,     1,    -1,     0,     1,    -1,     0,     0,     0,     1,
    -1,     0,     1,    -1,     1,    -1,     0,     0,     0,     1,    -1,
     0,     0,     0,     0,     1,    -1,     1,    -1,     0,     1,    -1,
     1,    -1,     1,     0,    -1,     1,     0,    -1,     1,    -1,     0,
     1,    -1,     1,    -1,     1,     0,    -1,     1,    -1,     0,     1,
    -1,     1,     0,     0,     0,    -1,     1,    -1,     0,     0,     0,
     0,     1,    -1,     1,     0,    -1,     0,     1,    -1,     0,     1,
    -1,     1,    -1,     1,    -1,     0,     1,    -2,     2,    -1,     0,
     0,     0,     1,    -1,     1,    -1,     1,    -1,     1,    -1,     1,
    -1,     0,     1,    -1,     1,    -1,     1,     0,     0,    -1,     1,
    -1,     0,     0,     0,     0,     1,    -1,     1,    -1,     0,     1,
    -1,     0,     1,    -1,     1,    -1,     1,    -1,     0,     1,    -1,
     0,     1,    -1,     1,     0,    -1,     1,    -1,     0,     1,    -2,
     2,    -1,     0,     0,     0,     1,    -1,     1,    -1,     1,     0,
    -1,     1,    -1,     0,     1,    -2,     2,    -1,     0,     0,     0,
     1,    -1,     0,     0,     1,    -1,     1,     0,    -1,     0,     1,
    -2,     2,    -1,     1,     0,    -1,     0,     1,    -2,     3,    -2,
     1,    -1,     1,    -2,     2,    -2,     2,    -1,     1,    -1,     1,
    -1,     1,    -1,     1,    -1,     1,    -1,     1,    -1,     1,    -1,
     0,     0,     1,    -1,     1,    -2,     2,    -1,     1,    -1,     1,
    -1,     0,     1,    -2,     2,    -1,     1,    -1,     0,     0,     0,
     0,     1,    -1,     1,    -1,     1,    -2,     2,    -1,     1,     0,
    -1,     1,    -1,     1,    -1,     0,     0,     0,     0,     0,     0,
     1,    -1,     1,    -1,     1,    -1,     0,     0,     0,     1,     0,
    -1,     1,     0,    -1,     1,    -2,     2,    -2,     2,    -1,     0,
     0,     0,     1,    -1,     1,    -1,     1,    -1,     1,    -1,     1,
     0,     0,    -1,     1,    -1,     1,    -1,     1,    -1,     0,     0,
     0,     0,     1,    -1,     1,     0,    -1,     0,     0,     0,     1,
    -1,     1,    -1,     0,     1,    -1,     0
};

int tock;

short sndbuf[sizeof(sound)*2];

/* Convert the mono "tock" sample to interleaved stereo */
void prepare_tock(void)
{
    int i;
    for(i = 0;i < (int)sizeof(sound)/2;i++) {
        sndbuf[i*2] = sound[i];
        sndbuf[i*2+1] = sound[i];
    }
}

void play_tock(void) {
    rb->pcm_play_data(NULL,(unsigned char *)sndbuf,sizeof(sndbuf));
    tock++;
}

#endif

void calc_period(void)
{
    period =  61440/bpm-1; /* (60*1024)/bpm; */
}


void draw_display(void)
{
    rb->lcd_clear_display();
#ifdef HAVE_REMOTE_LCD
    rb->lcd_remote_clear_display();
#endif

#ifdef HAVE_LCD_BITMAP 
    rb->lcd_setfont(FONT_SYSFIXED);
    rb->lcd_putsxy(1, 1, "Metronome");
    rb->lcd_puts(0, 10, "Select to TAP");
    rb->lcd_puts(0, 12, "Rec to SYNC");
#endif
#ifdef HAVE_REMOTE_LCD
    rb->lcd_remote_putsxy(1, 1, "Metronome");
    rb->lcd_remote_putsxy(1, 42, "Rec to TAP");
    rb->lcd_remote_putsxy(1, 52, "Mode to SYNC");
#endif

    rb->snprintf(buffer, sizeof(buffer), "BPM: %d ",bpm);
#ifdef HAVE_LCD_BITMAP
    rb->lcd_puts(0,7, buffer);
#else
    rb->lcd_puts(0,0, buffer);
#endif
#ifdef HAVE_REMOTE_LCD
    rb->lcd_remote_putsxy(1, 32, buffer);
#endif

    rb->snprintf(buffer, sizeof(buffer), "Vol: %d",
                 rb->global_settings->volume);
#ifdef HAVE_LCD_BITMAP
    rb->lcd_puts(10, 7, buffer);
#else
    rb->lcd_puts(0,1, buffer);
#endif
#ifdef HAVE_REMOTE_LCD
    rb->lcd_remote_putsxy(60, 32, buffer);
#endif

#ifdef HAVE_LCD_BITMAP
    rb->lcd_drawline(0, 12, 111, 12);
    if(sound_paused)
        rb->lcd_puts(0,2,METRONOME_MSG_START);
    else
        rb->lcd_puts(0,2,METRONOME_MSG_STOP);
    rb->lcd_update();
#endif
#ifdef HAVE_REMOTE_LCD
    rb->lcd_remote_drawline(0, 12, 111, 12);
    if(sound_paused)
        rb->lcd_remote_putsxy(1,20,METRONOME_MSG_START);
    else
        rb->lcd_remote_putsxy(1,20,METRONOME_MSG_STOP);
    rb->lcd_remote_update();
#endif
}

/* helper function to change the volume by a certain amount, +/-
   ripped from video.c */
void change_volume(int delta){
    int minvol = rb->sound_min(SOUND_VOLUME);
    int maxvol = rb->sound_max(SOUND_VOLUME);
    int vol = rb->global_settings->volume + delta;

    if (vol > maxvol) vol = maxvol;
    else if (vol < minvol) vol = minvol;
    if (vol != rb->global_settings->volume) {
        rb->sound_set(SOUND_VOLUME, vol);
        rb->global_settings->volume = vol;
        draw_display();
    }
}

/*function to accelerate bpm change*/
void change_bpm(int direction){
        if((bpm_step_counter < 20)
            || (bpm > 389)
            || (bpm < 10))
        bpm = bpm + direction;
    else if (bpm_step_counter < 60)
        bpm = bpm + direction * 2;
    else
        bpm = bpm + direction * 9; 
        
    if (bpm > 400) bpm = 400;
    if (bpm < 1) bpm = 1;
    calc_period();
    draw_display();
    bpm_step_counter++;
}    

void timer_callback(void)
{
    if(minitick >= period){
        minitick = 0;
        if(!sound_active && !sound_paused && !tap_count) {
            play_tock();
            rb->reset_poweroff_timer();
        }
    }
    else {
        minitick++;
    }
    
    if (tap_count) {
        tap_time++;
        if (tap_count > 1 && tap_time > tap_timeout)
            tap_count = 0;
    }
}

void cleanup(void *parameter)
{
    (void)parameter;

    rb->timer_unregister();
    MET_PLAY_STOP; /* stop audio ISR */
    led(0);
}

void tap(void)
{
    if (tap_count == 0) {
        tap_time = 0;
    } 
    else {
        if (tap_time > 0) {
            bpm = 61440/(tap_time/tap_count);
            
            if (bpm > 400)
                bpm = 400;
        }
        
        calc_period();
        draw_display();
        
        tap_timeout = (tap_count+2)*tap_time/tap_count;
    }
    
    tap_count++;
    minitick = 0;  /* sync tock to tapping */
    play_tock();

    reset_tap = false;
}

enum plugin_status plugin_start(struct plugin_api* api, void* parameter){
    int button;
    const struct button_mapping *plugin_contexts[]
                     = {generic_directions,
#if CONFIG_KEYPAD == ONDIO_PAD
                        ondio_action,
#elif (CONFIG_KEYPAD == IRIVER_H100_PAD) || (CONFIG_KEYPAD == IRIVER_H300_PAD)
                        iriver_syncaction,
#endif
                        generic_actions};
#if (CONFIG_KEYPAD == ONDIO_PAD) \
    || (CONFIG_KEYPAD == IRIVER_H100_PAD) \
    || (CONFIG_KEYPAD == IRIVER_H300_PAD)
#define PLA_ARRAY_COUNT 3
#else
#define PLA_ARRAY_COUNT 2
#endif

    (void)parameter;
    rb = api;

    if (MET_IS_PLAYING)
        MET_PLAY_STOP; /* stop audio IS */
        
#if CONFIG_CODEC != SWCODEC
    rb->bitswap(sound, sizeof(sound));
#else
    prepare_tock();
    rb->pcm_set_frequency(44100);
#endif

    calc_period();
    rb->timer_register(1, NULL, TIMER_FREQ/1024, 1, timer_callback);
    draw_display();

    /* main loop */
    while (true){
        reset_tap = true;
                    
        button = pluginlib_getaction(rb,TIMEOUT_BLOCK,
                                     plugin_contexts,PLA_ARRAY_COUNT);
    
        switch (button) {

            case METRONOME_QUIT:
                /* get out of here */
                cleanup(NULL);
                return PLUGIN_OK;

#if CONFIG_KEYPAD == ONDIO_PAD
            case METRONOME_PLAY_TAP:
                if(sound_paused) {
                    sound_paused = false;
                    calc_period();
                    draw_display();
                }
                else
                    tap();
                break;
                
            case METRONOME_PAUSE:
                if(!sound_paused) {
                    sound_paused = true;
                    draw_display();
                }    
                break;
#else
            case METRONOME_PLAYPAUSE:
                if(sound_paused)
                    sound_paused = false;
                else
                    sound_paused = true;
                calc_period();
                draw_display();
                break;
#endif
                
            case METRONOME_VOL_UP:
            case METRONOME_VOL_UP_REP:
                change_volume(1);
                calc_period();
                break;
          
            case METRONOME_VOL_DOWN:
            case METRONOME_VOL_DOWN_REP:
                change_volume(-1);
                calc_period();
                break;

            case METRONOME_LEFT:
                bpm_step_counter = 0;
            case METRONOME_LEFT_REP:
                change_bpm(-1);
                break;

            case METRONOME_RIGHT:
                bpm_step_counter = 0;
            case METRONOME_RIGHT_REP:
                change_bpm(1);
                break;

#ifdef  METRONOME_TAP
            case METRONOME_TAP:
                tap();
                break;
#endif

#ifdef METRONOME_SYNC
            case METRONOME_SYNC:
                minitick = period;
                break;
#endif

            default:
                if (rb->default_event_handler_ex(button, cleanup, NULL)
                    == SYS_USB_CONNECTED)
                    return PLUGIN_USB_CONNECTED;
                reset_tap = false;
                break;

        }
        if (reset_tap) {
            tap_count = 0;
        }
    }
}