1 | /* |
---|
2 | * |
---|
3 | * This library is free software; you can redistribute it and/or |
---|
4 | * modify it under the terms of the GNU Library General Public License |
---|
5 | * as published by the Free Software Foundation; either version 2 of |
---|
6 | * the License, or (at your option) any later version. |
---|
7 | * |
---|
8 | * This library is distributed in the hope that it will be useful, but |
---|
9 | * WITHOUT ANY WARRANTY; without even the implied warranty of |
---|
10 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
---|
11 | * Library General Public License for more details. |
---|
12 | * |
---|
13 | * You should have received a copy of the GNU Library General Public |
---|
14 | * License along with this library; if not, write to the Free |
---|
15 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA |
---|
16 | * 02111-1307, USA |
---|
17 | */ |
---|
18 | |
---|
19 | /* this file originally taken from FluidSynth - A Software Synthesizer |
---|
20 | * Copyright (C) 2003 Peter Hanappe and others. |
---|
21 | * |
---|
22 | * \note fixed some track names causing segfault |
---|
23 | */ |
---|
24 | |
---|
25 | #include "aubio_priv.h" |
---|
26 | #include "midi.h" |
---|
27 | #include "midi_event.h" |
---|
28 | #include "midi_track.h" |
---|
29 | #include "midi_player.h" |
---|
30 | #include "midi_file.h" |
---|
31 | |
---|
32 | |
---|
33 | /** aubio_midi_file */ |
---|
34 | struct _aubio_midi_file_t{ |
---|
35 | //aubio_file_t fp; |
---|
36 | FILE *fp; |
---|
37 | int running_status; |
---|
38 | int c; |
---|
39 | int type; |
---|
40 | int ntracks; |
---|
41 | int uses_smpte; |
---|
42 | unsigned int smpte_fps; |
---|
43 | unsigned int smpte_res; |
---|
44 | unsigned int division; /* If uses_SMPTE == 0 then division is |
---|
45 | ticks per beat (quarter-note) */ |
---|
46 | double tempo; /* Beats per second (SI rules =) */ |
---|
47 | int tracklen; |
---|
48 | int trackpos; |
---|
49 | int eot; |
---|
50 | int varlen; |
---|
51 | }; |
---|
52 | |
---|
53 | /*************************************************************** |
---|
54 | * |
---|
55 | * MIDIFILE |
---|
56 | */ |
---|
57 | |
---|
58 | /** new_aubio_midi_file */ |
---|
59 | aubio_midi_file_t * new_aubio_midi_file(char* filename) |
---|
60 | { |
---|
61 | aubio_midi_file_t* mf; |
---|
62 | |
---|
63 | mf = AUBIO_NEW(aubio_midi_file_t); |
---|
64 | if (mf == NULL) { |
---|
65 | AUBIO_ERR( "Out of memory"); |
---|
66 | return NULL; |
---|
67 | } |
---|
68 | AUBIO_MEMSET(mf, 0, sizeof(aubio_midi_file_t)); |
---|
69 | |
---|
70 | mf->c = -1; |
---|
71 | mf->running_status = -1; |
---|
72 | mf->fp = AUBIO_FOPEN(filename, "rb"); |
---|
73 | |
---|
74 | if (mf->fp == NULL) { |
---|
75 | AUBIO_ERR( "Couldn't open the MIDI file !\n"); |
---|
76 | AUBIO_FREE(mf); |
---|
77 | return NULL; |
---|
78 | } |
---|
79 | |
---|
80 | if (aubio_midi_file_read_mthd(mf) != AUBIO_OK) { |
---|
81 | AUBIO_FREE(mf); |
---|
82 | return NULL; |
---|
83 | } |
---|
84 | return mf; |
---|
85 | } |
---|
86 | |
---|
87 | /** del_aubio_midi_file */ |
---|
88 | void del_aubio_midi_file(aubio_midi_file_t* mf) |
---|
89 | { |
---|
90 | if (mf == NULL) { |
---|
91 | return; |
---|
92 | } |
---|
93 | if (mf->fp != NULL) { |
---|
94 | AUBIO_FCLOSE(mf->fp); |
---|
95 | } |
---|
96 | AUBIO_FREE(mf); |
---|
97 | return; |
---|
98 | } |
---|
99 | |
---|
100 | /** aubio_midi_file_getc */ |
---|
101 | int aubio_midi_file_getc(aubio_midi_file_t* mf) |
---|
102 | { |
---|
103 | unsigned char c; |
---|
104 | int n; |
---|
105 | if (mf->c >= 0) { |
---|
106 | c = mf->c; |
---|
107 | mf->c = -1; |
---|
108 | } else { |
---|
109 | n = AUBIO_FREAD(&c, 1, 1, mf->fp); |
---|
110 | mf->trackpos++; |
---|
111 | } |
---|
112 | return (int) c; |
---|
113 | } |
---|
114 | |
---|
115 | /** aubio_midi_file_push */ |
---|
116 | int aubio_midi_file_push(aubio_midi_file_t* mf, int c) |
---|
117 | { |
---|
118 | mf->c = c; |
---|
119 | return AUBIO_OK; |
---|
120 | } |
---|
121 | |
---|
122 | /** aubio_midi_file_read */ |
---|
123 | int aubio_midi_file_read(aubio_midi_file_t* mf, void* buf, int len) |
---|
124 | { |
---|
125 | int num = AUBIO_FREAD(buf, 1, len, mf->fp); |
---|
126 | mf->trackpos += num; |
---|
127 | #if DEBUG |
---|
128 | if (num != len) { |
---|
129 | AUBIO_DBG( "Coulnd't read the requested number of bytes"); |
---|
130 | } |
---|
131 | #endif |
---|
132 | return (num != len)? AUBIO_FAIL : AUBIO_OK; |
---|
133 | } |
---|
134 | |
---|
135 | /** aubio_midi_file_skip */ |
---|
136 | int aubio_midi_file_skip(aubio_midi_file_t* mf, int skip) |
---|
137 | { |
---|
138 | int err = AUBIO_FSEEK(mf->fp, skip, SEEK_CUR); |
---|
139 | if (err) { |
---|
140 | AUBIO_ERR( "FAIL to seek position in file"); |
---|
141 | return AUBIO_FAIL; |
---|
142 | } |
---|
143 | return AUBIO_OK; |
---|
144 | } |
---|
145 | |
---|
146 | /** aubio_midi_file_read_mthd */ |
---|
147 | int aubio_midi_file_read_mthd(aubio_midi_file_t* mf) |
---|
148 | { |
---|
149 | signed char mthd[15]; |
---|
150 | if (aubio_midi_file_read(mf, mthd, 14) != AUBIO_OK) { |
---|
151 | return AUBIO_FAIL; |
---|
152 | } |
---|
153 | if ((AUBIO_STRNCMP(mthd, "MThd", 4) != 0) || (mthd[7] != 6) || (mthd[9] > 2)) { |
---|
154 | AUBIO_ERR( "Doesn't look like a MIDI file: invalid MThd header"); |
---|
155 | return AUBIO_FAIL; |
---|
156 | } |
---|
157 | mf->type = mthd[9]; |
---|
158 | mf->ntracks = (unsigned) mthd[11]; |
---|
159 | mf->ntracks += (unsigned int) (mthd[10]) << 16; |
---|
160 | /** \bug: smpte timing not yet implemented */ |
---|
161 | if((int)(mthd[12]) < 0){ |
---|
162 | /*if((mthd[12]) < 0){*/ |
---|
163 | mf->uses_smpte = 1; |
---|
164 | mf->smpte_fps = -mthd[12]; |
---|
165 | mf->smpte_res = (unsigned) mthd[13]; |
---|
166 | AUBIO_ERR( "File uses SMPTE timing -- Not implemented yet"); |
---|
167 | return AUBIO_FAIL; |
---|
168 | } else { |
---|
169 | mf->uses_smpte = 0; |
---|
170 | mf->division = (mthd[12] << 8) | (mthd[13] & 0xff); |
---|
171 | } |
---|
172 | return AUBIO_OK; |
---|
173 | } |
---|
174 | |
---|
175 | /** aubio_midi_file_load_tracks */ |
---|
176 | int aubio_midi_file_load_tracks(aubio_midi_file_t* mf, aubio_midi_player_t* player) |
---|
177 | { |
---|
178 | int i; |
---|
179 | for (i = 0; i < mf->ntracks; i++) { |
---|
180 | if (aubio_midi_file_read_track(mf, player, i) != AUBIO_OK) { |
---|
181 | return AUBIO_FAIL; |
---|
182 | } |
---|
183 | } |
---|
184 | return AUBIO_OK; |
---|
185 | } |
---|
186 | |
---|
187 | /** aubio_midi_file_read_tracklen */ |
---|
188 | int aubio_midi_file_read_tracklen(aubio_midi_file_t* mf) |
---|
189 | { |
---|
190 | unsigned char length[5]; |
---|
191 | if (aubio_midi_file_read(mf, length, 4) != AUBIO_OK) { |
---|
192 | return AUBIO_FAIL; |
---|
193 | } |
---|
194 | mf->tracklen = aubio_getlength(length); |
---|
195 | mf->trackpos = 0; |
---|
196 | mf->eot = 0; |
---|
197 | return AUBIO_OK; |
---|
198 | } |
---|
199 | |
---|
200 | /** aubio_midi_file_eot */ |
---|
201 | int aubio_midi_file_eot(aubio_midi_file_t* mf) |
---|
202 | { |
---|
203 | #if DEBUG |
---|
204 | if (mf->trackpos > mf->tracklen) { |
---|
205 | printf("track overrun: %d > %d\n", mf->trackpos, mf->tracklen); |
---|
206 | } |
---|
207 | #endif |
---|
208 | return mf->eot || (mf->trackpos >= mf->tracklen); |
---|
209 | } |
---|
210 | |
---|
211 | /** aubio_midi_file_read_track */ |
---|
212 | int aubio_midi_file_read_track(aubio_midi_file_t* mf, aubio_midi_player_t* player, int num) |
---|
213 | { |
---|
214 | aubio_track_t* track; |
---|
215 | unsigned char id[5], length[5]; |
---|
216 | int found_track = 0; |
---|
217 | int skip; |
---|
218 | |
---|
219 | AUBIO_DBG("Loading track %d\n",num); |
---|
220 | if (aubio_midi_file_read(mf, id, 4) != AUBIO_OK) { |
---|
221 | AUBIO_DBG("Failed loading track %d\n",num); |
---|
222 | return AUBIO_FAIL; |
---|
223 | } |
---|
224 | |
---|
225 | id[4]='\0'; |
---|
226 | |
---|
227 | while (!found_track){ |
---|
228 | |
---|
229 | if (aubio_isasciistring((char*) id) == 0) { |
---|
230 | AUBIO_ERR( "An non-ascii track header found, currupt file"); |
---|
231 | return AUBIO_FAIL; |
---|
232 | |
---|
233 | } else if (strcmp((char*) id, "MTrk") == 0) { |
---|
234 | |
---|
235 | found_track = 1; |
---|
236 | |
---|
237 | if (aubio_midi_file_read_tracklen(mf) != AUBIO_OK) { |
---|
238 | return AUBIO_FAIL; |
---|
239 | } |
---|
240 | |
---|
241 | track = new_aubio_track(num); |
---|
242 | if (track == NULL) { |
---|
243 | AUBIO_ERR( "Out of memory"); |
---|
244 | return AUBIO_FAIL; |
---|
245 | } |
---|
246 | |
---|
247 | while (!aubio_midi_file_eot(mf)) { |
---|
248 | if (aubio_midi_file_read_event(mf, track) != AUBIO_OK) { |
---|
249 | return AUBIO_FAIL; |
---|
250 | } |
---|
251 | } |
---|
252 | |
---|
253 | aubio_midi_player_add_track(player, track); |
---|
254 | } else { |
---|
255 | found_track = 0; |
---|
256 | if (aubio_midi_file_read(mf, length, 4) != AUBIO_OK) { |
---|
257 | return AUBIO_FAIL; |
---|
258 | } |
---|
259 | skip = aubio_getlength(length); |
---|
260 | /* fseek(mf->fp, skip, SEEK_CUR); */ |
---|
261 | if (aubio_midi_file_skip(mf, skip) != AUBIO_OK) { |
---|
262 | return AUBIO_FAIL; |
---|
263 | } |
---|
264 | } |
---|
265 | } |
---|
266 | |
---|
267 | if (feof(mf->fp)) { |
---|
268 | AUBIO_ERR( "Unexpected end of file"); |
---|
269 | return AUBIO_FAIL; |
---|
270 | } |
---|
271 | AUBIO_DBG("Loaded track %d\n",num); |
---|
272 | return AUBIO_OK; |
---|
273 | } |
---|
274 | |
---|
275 | /** aubio_midi_file_read_varlen */ |
---|
276 | int aubio_midi_file_read_varlen(aubio_midi_file_t* mf) |
---|
277 | { |
---|
278 | int i; |
---|
279 | int c; |
---|
280 | mf->varlen = 0; |
---|
281 | for (i = 0;;i++) { |
---|
282 | if (i == 4) { |
---|
283 | AUBIO_ERR( "Invalid variable length number"); |
---|
284 | return AUBIO_FAIL; |
---|
285 | } |
---|
286 | c = aubio_midi_file_getc(mf); |
---|
287 | if (c < 0) { |
---|
288 | AUBIO_ERR( "Unexpected end of file"); |
---|
289 | return AUBIO_FAIL; |
---|
290 | } |
---|
291 | if (c & 0x80){ |
---|
292 | mf->varlen |= (int) (c & 0x7F); |
---|
293 | mf->varlen <<= 7; |
---|
294 | } else { |
---|
295 | mf->varlen += c; |
---|
296 | break; |
---|
297 | } |
---|
298 | } |
---|
299 | return AUBIO_OK; |
---|
300 | } |
---|
301 | |
---|
302 | /** aubio_midi_file_read_event */ |
---|
303 | int aubio_midi_file_read_event(aubio_midi_file_t* mf, aubio_track_t* track) |
---|
304 | { |
---|
305 | int dtime; |
---|
306 | int status; |
---|
307 | int type; |
---|
308 | int tempo; |
---|
309 | unsigned char* metadata = NULL; |
---|
310 | unsigned char* dyn_buf = NULL; |
---|
311 | unsigned char static_buf[256]; |
---|
312 | int nominator, denominator, clocks, notes, sf, mi; |
---|
313 | aubio_midi_event_t* evt; |
---|
314 | int channel = 0; |
---|
315 | int param1 = 0; |
---|
316 | int param2 = 0; |
---|
317 | |
---|
318 | |
---|
319 | /* read the delta-time of the event */ |
---|
320 | if (aubio_midi_file_read_varlen(mf) != AUBIO_OK) { |
---|
321 | return AUBIO_FAIL; |
---|
322 | } |
---|
323 | dtime = mf->varlen; |
---|
324 | |
---|
325 | /* read the status byte */ |
---|
326 | status = aubio_midi_file_getc(mf); |
---|
327 | if (status < 0) { |
---|
328 | AUBIO_ERR( "Unexpected end of file"); |
---|
329 | return AUBIO_FAIL; |
---|
330 | } |
---|
331 | |
---|
332 | /* not a valid status byte: use the running status instead */ |
---|
333 | if ((status & 0x80) == 0) { |
---|
334 | if ((mf->running_status & 0x80) == 0) { |
---|
335 | AUBIO_ERR( "Undefined status and invalid running status"); |
---|
336 | return AUBIO_FAIL; |
---|
337 | } |
---|
338 | aubio_midi_file_push(mf, status); |
---|
339 | status = mf->running_status; |
---|
340 | } |
---|
341 | |
---|
342 | /* check what message we have */ |
---|
343 | if (status & 0x80) { |
---|
344 | mf->running_status = status; |
---|
345 | |
---|
346 | if ((status == MIDI_SYSEX) || (status == MIDI_EOX)) { /* system exclusif */ |
---|
347 | /** \bug Sysex messages are not handled yet */ |
---|
348 | /* read the length of the message */ |
---|
349 | if (aubio_midi_file_read_varlen(mf) != AUBIO_OK) { |
---|
350 | return AUBIO_FAIL; |
---|
351 | } |
---|
352 | |
---|
353 | if (mf->varlen < 255) { |
---|
354 | metadata = &static_buf[0]; |
---|
355 | } else { |
---|
356 | AUBIO_DBG( "%s: %d: alloc metadata, len = %d", __FILE__, __LINE__, mf->varlen); |
---|
357 | dyn_buf = AUBIO_MALLOC(mf->varlen + 1); |
---|
358 | if (dyn_buf == NULL) { |
---|
359 | //AUBIO_LOG(AUBIO_PANIC, "Out of memory"); |
---|
360 | AUBIO_ERR("Out of memory"); |
---|
361 | return AUBIO_FAIL; |
---|
362 | } |
---|
363 | metadata = dyn_buf; |
---|
364 | } |
---|
365 | |
---|
366 | /* read the data of the message */ |
---|
367 | if (mf->varlen) { |
---|
368 | |
---|
369 | if (aubio_midi_file_read(mf, metadata, mf->varlen) != AUBIO_OK) { |
---|
370 | if (dyn_buf) { |
---|
371 | AUBIO_FREE(dyn_buf); |
---|
372 | } |
---|
373 | return AUBIO_FAIL; |
---|
374 | } |
---|
375 | |
---|
376 | if (dyn_buf) { |
---|
377 | AUBIO_DBG( "%s: %d: free metadata", __FILE__, __LINE__); |
---|
378 | AUBIO_FREE(dyn_buf); |
---|
379 | } |
---|
380 | } |
---|
381 | |
---|
382 | return AUBIO_OK; |
---|
383 | |
---|
384 | } else if (status == MIDI_META_EVENT) { /* meta events */ |
---|
385 | |
---|
386 | int result = AUBIO_OK; |
---|
387 | |
---|
388 | /* get the type of the meta message */ |
---|
389 | type = aubio_midi_file_getc(mf); |
---|
390 | if (type < 0) { |
---|
391 | AUBIO_ERR( "Unexpected end of file"); |
---|
392 | return AUBIO_FAIL; |
---|
393 | } |
---|
394 | |
---|
395 | /* get the length of the data part */ |
---|
396 | if (aubio_midi_file_read_varlen(mf) != AUBIO_OK) { |
---|
397 | return AUBIO_FAIL; |
---|
398 | } |
---|
399 | |
---|
400 | if (mf->varlen) { |
---|
401 | |
---|
402 | if (mf->varlen < 255) { |
---|
403 | metadata = &static_buf[0]; |
---|
404 | } else { |
---|
405 | AUBIO_DBG( "%s: %d: alloc metadata, len = %d", __FILE__, __LINE__, mf->varlen); |
---|
406 | dyn_buf = AUBIO_MALLOC(mf->varlen + 1); |
---|
407 | if (dyn_buf == NULL) { |
---|
408 | AUBIO_ERR("Out of memory"); |
---|
409 | return AUBIO_FAIL; |
---|
410 | } |
---|
411 | metadata = dyn_buf; |
---|
412 | } |
---|
413 | |
---|
414 | /* read the data */ |
---|
415 | if (aubio_midi_file_read(mf, metadata, mf->varlen) != AUBIO_OK) { |
---|
416 | if (dyn_buf) { |
---|
417 | AUBIO_FREE(dyn_buf); |
---|
418 | } |
---|
419 | return AUBIO_FAIL; |
---|
420 | } |
---|
421 | } |
---|
422 | |
---|
423 | /* handle meta data */ |
---|
424 | switch (type) { |
---|
425 | |
---|
426 | case MIDI_COPYRIGHT: |
---|
427 | metadata[mf->varlen] = 0; |
---|
428 | break; |
---|
429 | |
---|
430 | case MIDI_TRACK_NAME: |
---|
431 | if (metadata != NULL) /* avoids crashes on empty tracks */ |
---|
432 | metadata[mf->varlen] = 0; |
---|
433 | aubio_track_set_name(track, (char*) metadata); |
---|
434 | break; |
---|
435 | |
---|
436 | case MIDI_INST_NAME: |
---|
437 | metadata[mf->varlen] = 0; |
---|
438 | break; |
---|
439 | |
---|
440 | case MIDI_LYRIC: |
---|
441 | break; |
---|
442 | |
---|
443 | case MIDI_MARKER: |
---|
444 | break; |
---|
445 | |
---|
446 | case MIDI_CUE_POINT: |
---|
447 | break; /* don't care much for text events */ |
---|
448 | |
---|
449 | case MIDI_EOT: |
---|
450 | if (mf->varlen != 0) { |
---|
451 | AUBIO_ERR("Invalid length for EndOfTrack event"); |
---|
452 | result = AUBIO_FAIL; |
---|
453 | break; |
---|
454 | } |
---|
455 | mf->eot = 1; |
---|
456 | break; |
---|
457 | |
---|
458 | case MIDI_SET_TEMPO: |
---|
459 | if (mf->varlen != 3) { |
---|
460 | AUBIO_ERR("Invalid length for SetTempo meta event"); |
---|
461 | result = AUBIO_FAIL; |
---|
462 | break; |
---|
463 | } |
---|
464 | tempo = (metadata[0] << 16) + (metadata[1] << 8) + metadata[2]; |
---|
465 | evt = new_aubio_midi_event(); |
---|
466 | if (evt == NULL) { |
---|
467 | AUBIO_ERR( "Out of memory"); |
---|
468 | result = AUBIO_FAIL; |
---|
469 | break; |
---|
470 | } |
---|
471 | evt->dtime = dtime; |
---|
472 | evt->type = MIDI_SET_TEMPO; |
---|
473 | evt->channel = 0; |
---|
474 | evt->param1 = tempo; |
---|
475 | evt->param2 = 0; |
---|
476 | aubio_track_add_event(track, evt); |
---|
477 | break; |
---|
478 | |
---|
479 | case MIDI_SMPTE_OFFSET: |
---|
480 | if (mf->varlen != 5) { |
---|
481 | AUBIO_ERR("Invalid length for SMPTE Offset meta event"); |
---|
482 | result = AUBIO_FAIL; |
---|
483 | break; |
---|
484 | } |
---|
485 | break; /* we don't use smtp */ |
---|
486 | |
---|
487 | case MIDI_TIME_SIGNATURE: |
---|
488 | if (mf->varlen != 4) { |
---|
489 | AUBIO_ERR("Invalid length for TimeSignature meta event"); |
---|
490 | result = AUBIO_FAIL; |
---|
491 | break; |
---|
492 | } |
---|
493 | nominator = metadata[0]; |
---|
494 | denominator = pow(2.0, (double) metadata[1]); |
---|
495 | clocks = metadata[2]; |
---|
496 | notes = metadata[3]; |
---|
497 | |
---|
498 | AUBIO_DBG("signature=%d/%d, metronome=%d, 32nd-notes=%d\n", |
---|
499 | nominator, denominator, clocks, notes); |
---|
500 | |
---|
501 | break; |
---|
502 | |
---|
503 | case MIDI_KEY_SIGNATURE: |
---|
504 | if (mf->varlen != 2) { |
---|
505 | AUBIO_ERR( "Invalid length for KeySignature meta event"); |
---|
506 | result = AUBIO_FAIL; |
---|
507 | break; |
---|
508 | } |
---|
509 | sf = metadata[0]; |
---|
510 | mi = metadata[1]; |
---|
511 | break; |
---|
512 | |
---|
513 | case MIDI_SEQUENCER_EVENT: |
---|
514 | AUBIO_DBG("Sequencer event ignored\n"); |
---|
515 | break; |
---|
516 | |
---|
517 | default: |
---|
518 | break; |
---|
519 | } |
---|
520 | |
---|
521 | if (dyn_buf) { |
---|
522 | AUBIO_DBG( "%s: %d: free metadata", __FILE__, __LINE__); |
---|
523 | AUBIO_FREE(dyn_buf); |
---|
524 | } |
---|
525 | |
---|
526 | return result; |
---|
527 | |
---|
528 | } else { /* channel messages */ |
---|
529 | |
---|
530 | type = status & 0xf0; |
---|
531 | channel = status & 0x0f; |
---|
532 | |
---|
533 | /* all channel message have at least 1 byte of associated data */ |
---|
534 | if ((param1 = aubio_midi_file_getc(mf)) < 0) { |
---|
535 | AUBIO_ERR( "Unexpected end of file"); |
---|
536 | return AUBIO_FAIL; |
---|
537 | } |
---|
538 | |
---|
539 | switch (type) { |
---|
540 | |
---|
541 | case NOTE_ON: |
---|
542 | if ((param2 = aubio_midi_file_getc(mf)) < 0) { |
---|
543 | AUBIO_ERR( "Unexpected end of file"); |
---|
544 | return AUBIO_FAIL; |
---|
545 | } |
---|
546 | break; |
---|
547 | |
---|
548 | case NOTE_OFF: |
---|
549 | if ((param2 = aubio_midi_file_getc(mf)) < 0) { |
---|
550 | AUBIO_ERR( "Unexpected end of file"); |
---|
551 | return AUBIO_FAIL; |
---|
552 | } |
---|
553 | break; |
---|
554 | |
---|
555 | case KEY_PRESSURE: |
---|
556 | if ((param2 = aubio_midi_file_getc(mf)) < 0) { |
---|
557 | AUBIO_ERR( "Unexpected end of file"); |
---|
558 | return AUBIO_FAIL; |
---|
559 | } |
---|
560 | break; |
---|
561 | |
---|
562 | case CONTROL_CHANGE: |
---|
563 | if ((param2 = aubio_midi_file_getc(mf)) < 0) { |
---|
564 | AUBIO_ERR( "Unexpected end of file"); |
---|
565 | return AUBIO_FAIL; |
---|
566 | } |
---|
567 | break; |
---|
568 | |
---|
569 | case PROGRAM_CHANGE: |
---|
570 | break; |
---|
571 | |
---|
572 | case CHANNEL_PRESSURE: |
---|
573 | break; |
---|
574 | |
---|
575 | case PITCH_BEND: |
---|
576 | if ((param2 = aubio_midi_file_getc(mf)) < 0) { |
---|
577 | AUBIO_ERR( "Unexpected end of file"); |
---|
578 | return AUBIO_FAIL; |
---|
579 | } |
---|
580 | |
---|
581 | param1 = ((param2 & 0x7f) << 7) | (param1 & 0x7f); |
---|
582 | param2 = 0; |
---|
583 | break; |
---|
584 | |
---|
585 | default: |
---|
586 | /* Can't possibly happen !? */ |
---|
587 | AUBIO_ERR( "Unrecognized MIDI event"); |
---|
588 | return AUBIO_FAIL; |
---|
589 | } |
---|
590 | evt = new_aubio_midi_event(); |
---|
591 | if (evt == NULL) { |
---|
592 | AUBIO_ERR( "Out of memory"); |
---|
593 | return AUBIO_FAIL; |
---|
594 | } |
---|
595 | evt->dtime = dtime; |
---|
596 | evt->type = type; |
---|
597 | evt->channel = channel; |
---|
598 | evt->param1 = param1; |
---|
599 | evt->param2 = param2; |
---|
600 | aubio_track_add_event(track, evt); |
---|
601 | } |
---|
602 | } |
---|
603 | return AUBIO_OK; |
---|
604 | } |
---|
605 | |
---|
606 | /** aubio_midi_file_get_division */ |
---|
607 | int aubio_midi_file_get_division(aubio_midi_file_t* midifile) |
---|
608 | { |
---|
609 | return midifile->division; |
---|
610 | } |
---|
611 | |
---|
612 | |
---|
613 | /** aubio_isasciistring */ |
---|
614 | int aubio_isasciistring(char* s) |
---|
615 | { |
---|
616 | int i; |
---|
617 | int len = (int) AUBIO_STRLEN(s); |
---|
618 | for (i = 0; i < len; i++) { |
---|
619 | if (!aubio_isascii(s[i])) { |
---|
620 | return 0; |
---|
621 | } |
---|
622 | } |
---|
623 | return 1; |
---|
624 | } |
---|
625 | |
---|
626 | /** aubio_getlength */ |
---|
627 | long aubio_getlength(unsigned char *s) |
---|
628 | { |
---|
629 | long i = 0; |
---|
630 | i = s[3] | (s[2]<<8) | (s[1]<<16) | (s[0]<<24); |
---|
631 | return i; |
---|
632 | } |
---|
633 | |
---|