apps/plugins/midi/midiplay.c

   1 /***************************************************************************
   2  *             __________               __   ___.
   3  *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
   4  *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
   5  *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
   6  *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
   7  *                     \/            \/     \/    \/            \/
   8  * $Id$
   9  *
  10  * Copyright (C) 2005 Karl Kurbjun based on midi2wav by Stepan Moskovchenko
  11  *
  12  * All files in this archive are subject to the GNU General Public License.
  13  * See the file COPYING in the source tree root for full license agreement.
  14  *
  15  * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
  16  * KIND, either express or implied.
  17  *
  18  ****************************************************************************/
  19 #include "plugin.h"
  20 #include "guspat.h"
  21 #include "midiutil.h"
  22 #include "synth.h"
  23 #include "sequencer.h"
  24 #include "midifile.h"
  25
  26 PLUGIN_HEADER
  27 PLUGIN_IRAM_DECLARE
  28
  29 /* variable button definitions */
  30 #if CONFIG_KEYPAD == RECORDER_PAD
  31 #define BTN_QUIT     BUTTON_OFF
  32 #define BTN_RIGHT    BUTTON_RIGHT
  33 #define BTN_UP       BUTTON_UP
  34 #define BTN_DOWN     BUTTON_DOWN
  35
  36 #elif CONFIG_KEYPAD == ONDIO_PAD
  37 #define BTN_QUIT         BUTTON_OFF
  38 #define BTN_RIGHT        BUTTON_RIGHT
  39 #define BTN_UP           BUTTON_UP
  40 #define BTN_DOWN         BUTTON_DOWN
  41
  42 #elif (CONFIG_KEYPAD == IRIVER_H100_PAD) || (CONFIG_KEYPAD == IRIVER_H300_PAD)
  43 #define BTN_QUIT         BUTTON_OFF
  44 #define BTN_RIGHT        BUTTON_RIGHT
  45 #define BTN_UP           BUTTON_UP
  46 #define BTN_DOWN         BUTTON_DOWN
  47
  48 #define BTN_RC_QUIT      BUTTON_RC_STOP
  49
  50 #elif (CONFIG_KEYPAD == IPOD_4G_PAD) || (CONFIG_KEYPAD == IPOD_3G_PAD) || \
  51       (CONFIG_KEYPAD == IPOD_1G2G_PAD)
  52 #define BTN_QUIT         (BUTTON_SELECT | BUTTON_MENU)
  53 #define BTN_RIGHT        BUTTON_RIGHT
  54 #define BTN_UP           BUTTON_SCROLL_FWD
  55 #define BTN_DOWN         BUTTON_SCROLL_BACK
  56
  57 #elif (CONFIG_KEYPAD == GIGABEAT_PAD)
  58 #define BTN_QUIT         BUTTON_POWER
  59 #define BTN_RIGHT        BUTTON_RIGHT
  60 #define BTN_UP           BUTTON_UP
  61 #define BTN_DOWN         BUTTON_DOWN
  62
  63 #elif (CONFIG_KEYPAD == SANSA_E200_PAD) || \
  64 (CONFIG_KEYPAD == SANSA_C200_PAD)
  65 #define BTN_QUIT         BUTTON_POWER
  66 #define BTN_RIGHT        BUTTON_RIGHT
  67 #define BTN_UP           BUTTON_UP
  68 #define BTN_DOWN         BUTTON_DOWN
  69
  70 #elif CONFIG_KEYPAD == IAUDIO_X5M5_PAD
  71 #define BTN_QUIT         BUTTON_POWER
  72 #define BTN_RIGHT        BUTTON_RIGHT
  73 #define BTN_UP           BUTTON_UP
  74 #define BTN_DOWN         BUTTON_DOWN
  75
  76 #elif CONFIG_KEYPAD == IRIVER_H10_PAD
  77 #define BTN_QUIT         BUTTON_POWER
  78 #define BTN_RIGHT        BUTTON_RIGHT
  79 #define BTN_UP           BUTTON_SCROLL_UP
  80 #define BTN_DOWN         BUTTON_SCROLL_DOWN
  81
  82 #endif
  83
  84 #undef SYNC
  85
  86 #ifdef SIMULATOR
  87         #define SYNC
  88 #endif
  89
  90 struct MIDIfile * mf IBSS_ATTR;
  91
  92 int numberOfSamples IBSS_ATTR;
  93 long bpm IBSS_ATTR;
  94
  95 int32_t gmbuf[BUF_SIZE*NBUF];
  96 static unsigned int samples_in_buf;
  97
  98 int quit=0;
  99 struct plugin_api * rb;
 100
 101 static int midimain(void * filename);
 102
 103 enum plugin_status plugin_start(struct plugin_api* api, void* parameter)
 104 {
 105     int retval = 0;
 106
 107     PLUGIN_IRAM_INIT(api)
 108
 109     rb = api;
 110     if(parameter == NULL)
 111     {
 112         rb->splash(HZ*2, " Play .MID file ");
 113         return PLUGIN_OK;
 114     }
 115     rb->lcd_setfont(0);
 116
 117 #if defined(HAVE_ADJUSTABLE_CPU_FREQ)
 118     rb->cpu_boost(true);
 119 #endif
 120
 121     printf("%s", parameter);
 122     /*   rb->splash(HZ, true, parameter); */
 123
 124 #ifdef RB_PROFILE
 125     rb->profile_thread();
 126 #endif
 127
 128     retval = midimain(parameter);
 129
 130 #ifdef RB_PROFILE
 131     rb->profstop();
 132 #endif
 133
 134     rb->pcm_play_stop();
 135     rb->pcm_set_frequency(HW_SAMPR_DEFAULT);
 136
 137 #if defined(HAVE_ADJUSTABLE_CPU_FREQ)
 138     rb->cpu_boost(false);
 139 #endif
 140     rb->splash(HZ, "FINISHED PLAYING");
 141
 142     if(retval == -1)
 143         return PLUGIN_ERROR;
 144     return PLUGIN_OK;
 145 }
 146
 147 bool swap=0;
 148 bool lastswap=1;
 149
 150 static inline void synthbuf(void)
 151 {
 152     int32_t *outptr;
 153     int i;
 154
 155 #ifndef SYNC
 156     if(lastswap==swap) return;
 157     lastswap=swap;
 158
 159     outptr=(swap ? gmbuf : gmbuf+BUF_SIZE);
 160 #else
 161     outptr=gmbuf;
 162 #endif
 163
 164     /* synth samples for as many whole ticks as we can fit in the buffer */
 165     for(i=0; i < BUF_SIZE/numberOfSamples; i++)
 166     {
 167         synthSamples((int32_t*)outptr, numberOfSamples);
 168         outptr += numberOfSamples;
 169         if( tick() == 0 )
 170             quit=1;
 171     }
 172
 173     /* how many samples did we write to the buffer? */
 174     samples_in_buf = BUF_SIZE-(BUF_SIZE%numberOfSamples);
 175
 176 }
 177
 178 void get_more(unsigned char** start, size_t* size)
 179 {
 180 #ifndef SYNC
 181     if(lastswap!=swap)
 182     {
 183         printf("Buffer miss!"); // Comment out the printf to make missses less noticable.
 184     }
 185
 186 #else
 187     synthbuf();  // For some reason midiplayer crashes when an update is forced
 188 #endif
 189
 190     *size = samples_in_buf*sizeof(int32_t);
 191 #ifndef SYNC
 192     *start = (unsigned char*)((swap ? gmbuf : gmbuf + BUF_SIZE));
 193     swap=!swap;
 194 #else
 195     *start = (unsigned char*)(gmbuf);
 196 #endif
 197 }
 198
 199 static int midimain(void * filename)
 200 {
 201     int notesUsed = 0;
 202     int a=0;
 203     printf("Loading file");
 204     mf= loadFile(filename);
 205
 206     if(mf == NULL)
 207     {
 208         printf("Error loading file.");
 209         return -1;
 210     }
 211
 212     if (initSynth(mf, ROCKBOX_DIR "/patchset/patchset.cfg",
 213         ROCKBOX_DIR "/patchset/drums.cfg") == -1)
 214         return -1;
 215
 216     rb->pcm_play_stop();
 217 #if INPUT_SRC_CAPS != 0
 218     /* Select playback */
 219     rb->audio_set_input_source(AUDIO_SRC_PLAYBACK, SRCF_PLAYBACK);
 220     rb->audio_set_output_source(AUDIO_SRC_PLAYBACK);
 221 #endif
 222     rb->pcm_set_frequency(SAMPLE_RATE); // 44100 22050 11025
 223
 224     /*
 225         * tick() will do one MIDI clock tick. Then, there's a loop here that
 226         * will generate the right number of samples per MIDI tick. The whole
 227         * MIDI playback is timed in terms of this value.. there are no forced
 228         * delays or anything. It just produces enough samples for each tick, and
 229         * the playback of these samples is what makes the timings right.
 230         *
 231         * This seems to work quite well. On a laptop, anyway.
 232         */
 233
 234     printf("Okay, starting sequencing");
 235
 236     bpm=mf->div*1000000/tempo;
 237     numberOfSamples=SAMPLE_RATE/bpm;
 238
 239
 240
 241     /* Skip over any junk in the beginning of the file, so start playing */
 242     /* after the first note event */
 243     do
 244     {
 245         notesUsed = 0;
 246         for(a=0; a<MAX_VOICES; a++)
 247             if(voices[a].isUsed == 1)
 248                 notesUsed++;
 249         tick();
 250     } while(notesUsed == 0);
 251
 252     synthbuf();
 253     rb->pcm_play_data(&get_more, NULL, 0);
 254
 255     int vol=0;
 256
 257     while(!quit)
 258     {
 259     #ifndef SYNC
 260         synthbuf();
 261     #endif
 262         rb->yield();
 263
 264         /* Prevent idle poweroff */
 265         rb->reset_poweroff_timer();
 266
 267         /* Code taken from Oscilloscope plugin */
 268         switch(rb->button_get(false))
 269         {
 270                 case BTN_UP:
 271                 case BTN_UP | BUTTON_REPEAT:
 272                     vol = rb->global_settings->volume;
 273                     if (vol < rb->sound_max(SOUND_VOLUME))
 274                     {
 275                         vol++;
 276                         rb->sound_set(SOUND_VOLUME, vol);
 277                         rb->global_settings->volume = vol;
 278                     }
 279                     break;
 280
 281                 case BTN_DOWN:
 282                 case BTN_DOWN | BUTTON_REPEAT:
 283                     vol = rb->global_settings->volume;
 284                     if (vol > rb->sound_min(SOUND_VOLUME))
 285                     {
 286                         vol--;
 287                         rb->sound_set(SOUND_VOLUME, vol);
 288                         rb->global_settings->volume = vol;
 289                     }
 290                     break;
 291
 292                 case BTN_RIGHT:
 293                 {
 294                     /* Skip 3 seconds */
 295                     /* Should skip length be retrieved from the RB settings? */
 296                     int samp = 3*SAMPLE_RATE;
 297                     int tickCount = samp / numberOfSamples;
 298                     int a=0;
 299                     for(a=0; a<tickCount; a++)
 300                         tick();
 301                     break;
 302                 }
 303 #ifdef BTN_RC_QUIT
 304                 case BTN_RC_QUIT:
 305 #endif
 306                 case BTN_QUIT:
 307                     quit=1;
 308         }
 309
 310
 311     }
 312
 313     return 0;
 314 }