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rockbox/apps/plugins/midi/midiplay.c
Rob Purchase 554d7ed902 D2: Enable plugin building (using initial keymaps from FS#8708 by Andreas Mueller, with some tweaks). 
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@16751 a1c6a512-1295-4272-9138-f99709370657
2008-03-22 22:03:34 +00:00

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/***************************************************************************
* __________ __ ___.
* Open \______ \ ____ ____ | | _\_ |__ _______ ___
* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
* \/ \/ \/ \/ \/
* $Id$
*
* Copyright (C) 2005 Karl Kurbjun based on midi2wav by Stepan Moskovchenko
*
* 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 "guspat.h"
#include "midiutil.h"
#include "synth.h"
#include "sequencer.h"
#include "midifile.h"
PLUGIN_HEADER
PLUGIN_IRAM_DECLARE
/* variable button definitions */
#if CONFIG_KEYPAD == RECORDER_PAD
#define BTN_QUIT BUTTON_OFF
#define BTN_RIGHT BUTTON_RIGHT
#define BTN_UP BUTTON_UP
#define BTN_DOWN BUTTON_DOWN
#define BTN_LEFT BUTTON_LEFT
#define BTN_PLAY BUTTON_PLAY
#elif CONFIG_KEYPAD == ONDIO_PAD
#define BTN_QUIT BUTTON_OFF
#define BTN_RIGHT BUTTON_RIGHT
#define BTN_UP BUTTON_UP
#define BTN_DOWN BUTTON_DOWN
#define BTN_LEFT BUTTON_LEFT
#define BTN_PLAY (BUTTON_MENU | BUTTON_OFF)
#elif (CONFIG_KEYPAD == IRIVER_H100_PAD) || (CONFIG_KEYPAD == IRIVER_H300_PAD)
#define BTN_QUIT BUTTON_OFF
#define BTN_RIGHT BUTTON_RIGHT
#define BTN_UP BUTTON_UP
#define BTN_DOWN BUTTON_DOWN
#define BTN_LEFT BUTTON_LEFT
#define BTN_RC_QUIT BUTTON_RC_STOP
#define BTN_PLAY BUTTON_ON
#elif (CONFIG_KEYPAD == IPOD_4G_PAD) || (CONFIG_KEYPAD == IPOD_3G_PAD) || \
(CONFIG_KEYPAD == IPOD_1G2G_PAD)
#define BTN_QUIT (BUTTON_SELECT | BUTTON_MENU)
#define BTN_RIGHT BUTTON_RIGHT
#define BTN_LEFT BUTTON_LEFT
#define BTN_UP BUTTON_SCROLL_FWD
#define BTN_DOWN BUTTON_SCROLL_BACK
#define BTN_PLAY BUTTON_PLAY
#elif (CONFIG_KEYPAD == GIGABEAT_PAD)
#define BTN_QUIT BUTTON_POWER
#define BTN_RIGHT BUTTON_RIGHT
#define BTN_LEFT BUTTON_LEFT
#define BTN_UP BUTTON_UP
#define BTN_DOWN BUTTON_DOWN
#define BTN_PLAY BUTTON_A
#elif (CONFIG_KEYPAD == SANSA_E200_PAD)
#define BTN_QUIT BUTTON_POWER
#define BTN_RIGHT BUTTON_RIGHT
#define BTN_LEFT BUTTON_LEFT
#define BTN_UP BUTTON_SCROLL_FWD
#define BTN_DOWN BUTTON_SCROLL_BACK
#define BTN_PLAY BUTTON_UP
#elif (CONFIG_KEYPAD == SANSA_C200_PAD)
#define BTN_QUIT BUTTON_POWER
#define BTN_RIGHT BUTTON_RIGHT
#define BTN_LEFT BUTTON_LEFT
#define BTN_UP BUTTON_VOL_UP
#define BTN_DOWN BUTTON_VOL_DOWN
#define BTN_PLAY BUTTON_UP
#elif CONFIG_KEYPAD == IAUDIO_X5M5_PAD
#define BTN_QUIT BUTTON_POWER
#define BTN_RIGHT BUTTON_RIGHT
#define BTN_LEFT BUTTON_LEFT
#define BTN_UP BUTTON_UP
#define BTN_DOWN BUTTON_DOWN
#define BTN_PLAY BUTTON_PLAY
#elif CONFIG_KEYPAD == IRIVER_H10_PAD
#define BTN_QUIT BUTTON_POWER
#define BTN_RIGHT BUTTON_RIGHT
#define BTN_LEFT BUTTON_LEFT
#define BTN_UP BUTTON_SCROLL_UP
#define BTN_DOWN BUTTON_SCROLL_DOWN
#define BTN_PLAY BUTTON_PLAY
#elif CONFIG_KEYPAD == MROBE500_PAD
#define BTN_QUIT BUTTON_POWER
#define BTN_RIGHT BUTTON_RIGHT
#define BTN_LEFT BUTTON_LEFT
#define BTN_UP BUTTON_RC_PLAY
#define BTN_DOWN BUTTON_RC_DOWN
#define BTN_PLAY BUTTON_RC_HEART
#elif (CONFIG_KEYPAD == MROBE100_PAD)
#define BTN_QUIT BUTTON_POWER
#define BTN_RIGHT BUTTON_RIGHT
#define BTN_LEFT BUTTON_LEFT
#define BTN_UP BUTTON_UP
#define BTN_DOWN BUTTON_DOWN
#define BTN_PLAY BUTTON_DISPLAY
#elif CONFIG_KEYPAD == IAUDIO_M3_PAD
#define BTN_QUIT BUTTON_RC_REC
#define BTN_RIGHT BUTTON_RC_FF
#define BTN_LEFT BUTTON_RC_REW
#define BTN_UP BUTTON_RC_VOL_UP
#define BTN_DOWN BUTTON_RC_VOL_DOWN
#define BTN_PLAY BUTTON_RC_PLAY
#elif CONFIG_KEYPAD == COWOND2_PAD
#define BTN_QUIT BUTTON_POWER
#define BTN_RIGHT BUTTON_RIGHT
#define BTN_LEFT BUTTON_LEFT
#define BTN_UP BUTTON_UP
#define BTN_DOWN BUTTON_DOWN
#define BTN_PLAY BUTTON_SELECT
#else
#error No keymap defined!
#endif
#undef SYNC
#ifdef SIMULATOR
#define SYNC
#endif
struct MIDIfile * mf IBSS_ATTR;
int numberOfSamples IBSS_ATTR; /* the number of samples in the current tick */
int playingTime IBSS_ATTR; /* How many seconds into the file have we been playing? */
int samplesThisSecond IBSS_ATTR; /* How many samples produced during this second so far? */
long bpm IBSS_ATTR;
int32_t gmbuf[BUF_SIZE*NBUF];
static unsigned int samples_in_buf;
int quit=0;
struct plugin_api * rb;
static int midimain(void * filename);
enum plugin_status plugin_start(struct plugin_api* api, void* parameter)
{
int retval = 0;
PLUGIN_IRAM_INIT(api)
rb = api;
if(parameter == NULL)
{
rb->splash(HZ*2, " Play .MID file ");
return PLUGIN_OK;
}
rb->lcd_setfont(0);
#if defined(HAVE_ADJUSTABLE_CPU_FREQ)
rb->cpu_boost(true);
#endif
printf("%s", parameter);
/* rb->splash(HZ, true, parameter); */
#ifdef RB_PROFILE
rb->profile_thread();
#endif
retval = midimain(parameter);
#ifdef RB_PROFILE
rb->profstop();
#endif
rb->pcm_play_stop();
rb->pcm_set_frequency(HW_SAMPR_DEFAULT);
#if defined(HAVE_ADJUSTABLE_CPU_FREQ)
rb->cpu_boost(false);
#endif
rb->splash(HZ, "FINISHED PLAYING");
if(retval == -1)
return PLUGIN_ERROR;
return PLUGIN_OK;
}
bool swap=0;
bool lastswap=1;
static inline void synthbuf(void)
{
int32_t *outptr;
int i=BUF_SIZE;
#ifndef SYNC
if(lastswap==swap) return;
lastswap=swap;
outptr=(swap ? gmbuf : gmbuf+BUF_SIZE);
#else
outptr=gmbuf;
#endif
/* synth samples for as many whole ticks as we can fit in the buffer */
for(; i >= numberOfSamples; i -= numberOfSamples)
{
synthSamples((int32_t*)outptr, numberOfSamples);
outptr += numberOfSamples;
if( tick() == 0 )
quit=1;
}
/* how many samples did we write to the buffer? */
samples_in_buf = BUF_SIZE-i;
}
void get_more(unsigned char** start, size_t* size)
{
#ifndef SYNC
if(lastswap!=swap)
{
printf("Buffer miss!"); // Comment out the printf to make missses less noticable.
}
#else
synthbuf(); // For some reason midiplayer crashes when an update is forced
#endif
*size = samples_in_buf*sizeof(int32_t);
#ifndef SYNC
*start = (unsigned char*)((swap ? gmbuf : gmbuf + BUF_SIZE));
swap=!swap;
#else
*start = (unsigned char*)(gmbuf);
#endif
}
static int midimain(void * filename)
{
int notesUsed = 0;
int a=0;
printf("Loading file");
mf= loadFile(filename);
if(mf == NULL)
{
printf("Error loading file.");
return -1;
}
if (initSynth(mf, ROCKBOX_DIR "/patchset/patchset.cfg",
ROCKBOX_DIR "/patchset/drums.cfg") == -1)
return -1;
rb->pcm_play_stop();
#if INPUT_SRC_CAPS != 0
/* Select playback */
rb->audio_set_input_source(AUDIO_SRC_PLAYBACK, SRCF_PLAYBACK);
rb->audio_set_output_source(AUDIO_SRC_PLAYBACK);
#endif
rb->pcm_set_frequency(SAMPLE_RATE); // 44100 22050 11025
/*
* tick() will do one MIDI clock tick. Then, there's a loop here that
* will generate the right number of samples per MIDI tick. The whole
* MIDI playback is timed in terms of this value.. there are no forced
* delays or anything. It just produces enough samples for each tick, and
* the playback of these samples is what makes the timings right.
*
* This seems to work quite well. On a laptop, anyway.
*/
printf("Okay, starting sequencing");
bpm=mf->div*1000000/tempo;
numberOfSamples=SAMPLE_RATE/bpm;
/* Skip over any junk in the beginning of the file, so start playing */
/* after the first note event */
do
{
notesUsed = 0;
for(a=0; a<MAX_VOICES; a++)
if(voices[a].isUsed)
notesUsed++;
tick();
} while(notesUsed == 0);
playingTime = 0;
samplesThisSecond = 0;
synthbuf();
rb->pcm_play_data(&get_more, NULL, 0);
int isPlaying = 1; /* 0 = paused */
int vol=0;
while(!quit)
{
#ifndef SYNC
synthbuf();
#endif
rb->yield();
/* Prevent idle poweroff */
rb->reset_poweroff_timer();
/* Code taken from Oscilloscope plugin */
switch(rb->button_get(false))
{
case BTN_UP:
case BTN_UP | BUTTON_REPEAT:
vol = rb->global_settings->volume;
if (vol < rb->sound_max(SOUND_VOLUME))
{
vol++;
rb->sound_set(SOUND_VOLUME, vol);
rb->global_settings->volume = vol;
}
break;
case BTN_DOWN:
case BTN_DOWN | BUTTON_REPEAT:
vol = rb->global_settings->volume;
if (vol > rb->sound_min(SOUND_VOLUME))
{
vol--;
rb->sound_set(SOUND_VOLUME, vol);
rb->global_settings->volume = vol;
}
break;
case BTN_LEFT:
{
/* Rewinding is tricky. Basically start the file over */
/* but run through the tracks without the synth running */
rb->pcm_play_stop();
seekBackward(5);
printf("Rewind to %d:%02d\n", playingTime/60, playingTime%60);
if(isPlaying)
rb->pcm_play_data(&get_more, NULL, 0);
break;
}
case BTN_RIGHT:
{
rb->pcm_play_stop();
seekForward(5);
printf("Skip to %d:%02d\n", playingTime/60, playingTime%60);
if(isPlaying)
rb->pcm_play_data(&get_more, NULL, 0);
break;
}
case BTN_PLAY:
{
if(isPlaying == 1)
{
printf("Paused at %d:%02d\n", playingTime/60, playingTime%60);
isPlaying = 0;
rb->pcm_play_stop();
} else
{
printf("Playing from %d:%02d\n", playingTime/60, playingTime%60);
isPlaying = 1;
rb->pcm_play_data(&get_more, NULL, 0);
}
break;
}
#ifdef BTN_RC_QUIT
case BTN_RC_QUIT:
#endif
case BTN_QUIT:
quit=1;
}
}
return 0;
}
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