3 Ann Hell Ex Machina - Music Software
4 Copyright (C) 2003/2006 Angel Ortega <angel@triptico.com>
6 ss_song.c - Software synth song event stream management
8 This program is free software; you can redistribute it and/or
9 modify it under the terms of the GNU General Public License
10 as published by the Free Software Foundation; either version 2
11 of the License, or (at your option) any later version.
13 This program is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
18 You should have received a copy of the GNU General Public License
19 along with this program; if not, write to the Free Software
20 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
22 http://www.triptico.com
41 song_ev_type type
; /* event type */
42 int frame
; /* frame number (time) */
43 int trk_id
; /* track id */
44 int event_id
; /* event id */
49 song_ev_type type
; /* SONG_EV_NOTE_OFF */
53 int note_id
; /* note id */
58 song_ev_type type
; /* SONG_EV_NOTE_ON */
62 int note_id
; /* note id */
63 int note
; /* MIDI-like note */
64 sample_t vol
; /* volume */
67 struct ss_ev_ss_sustain
69 song_ev_type type
; /* SONG_EV_SS_SUSTAIN */
73 double sustain
; /* sustain time (in frames) */
76 struct ss_ev_ss_vibrato
78 song_ev_type type
; /* SONG_EV_SS_VIBRATO */
82 double vib_depth
; /* vibrato depth (in msecs) */
83 double vib_freq
; /* vibrato frequency (in Hzs) */
86 struct ss_ev_ss_channel
88 song_ev_type type
; /* SONG_EV_SS_CHANNEL */
92 int channel
; /* channel */
93 sample_t vol
; /* volume */
98 song_ev_type type
; /* SONG_EV_SS_WAV */
102 char * file
; /* path to .wav file */
103 int base
; /* MIDI-like base note */
104 int min
; /* MIDI-like minimum note */
105 int max
; /* MIDI-like maximum note */
106 double loop_start
; /* loop start */
107 double loop_end
; /* loop end */
112 song_ev_type type
; /* SONG_EV_SS_PAT */
116 char * file
; /* path to .pat file */
121 song_ev_type type
; /* SONG_EV_TEMPO */
125 double tempo
; /* tempo in bmp */
128 struct ss_ev_pitch_stretch
130 song_ev_type type
; /* SONG_EV_SS_PITCH_STRETCH */
134 int note_id
; /* note id */
135 int note
; /* MIDI-like note (to find the wave) */
136 double len
; /* note length (1: whole note) */
137 sample_t vol
; /* note volume (1: full volume) */
140 struct ss_ev_print_wave_tempo
142 song_ev_type type
; /* SONG_EV_SS_PRINT_WAVE_TEMPO */
146 int note_id
; /* note id */
147 int note
; /* MIDI-like note (to find the wave) */
148 double len
; /* note length (1: whole note) */
153 song_ev_type type
; /* effect type */
157 int channel
; /* channel */
158 double size
; /* size of effect */
159 sample_t gain
; /* gain */
160 double depth
; /* depth */
161 double freq
; /* freq */
162 double phase
; /* phase */
163 sample_t initial
; /* initial vol */
164 sample_t final
; /* final vol */
167 struct ss_ev_song_info
169 song_ev_type type
; /* SONG_EV_SONG_INFO */
173 char * author
; /* track author */
174 char * name
; /* track name */
179 struct ss_ev_generic generic
;
180 struct ss_ev_note_on note_on
;
181 struct ss_ev_note_off note_off
;
182 struct ss_ev_ss_sustain ss_sustain
;
183 struct ss_ev_ss_vibrato ss_vibrato
;
184 struct ss_ev_ss_channel ss_channel
;
185 struct ss_ev_ss_wav ss_wav
;
186 struct ss_ev_ss_pat ss_pat
;
187 struct ss_ev_ss_eff ss_eff
;
188 struct ss_ev_tempo tempo
;
189 struct ss_ev_pitch_stretch ss_pitch_stretch
;
190 struct ss_ev_print_wave_tempo ss_print_wave_tempo
;
191 struct ss_ev_song_info song_info
;
194 /* the softsynth song stream */
196 static union ss_ev
* ss_song
= NULL
;
197 static int n_ss_ev
= 0;
200 /* the instruments */
202 struct ss_ins ss_song_ins
[SS_MAX_INSTRUMENTS
];
206 ********************/
208 static void add_ss_ev(union ss_ev
* e
)
209 /* adds a softsynth song event */
212 ss_song
= (union ss_ev
*)realloc(ss_song
,
213 (n_ss_ev
+ 1) * sizeof(union ss_ev
));
216 memcpy(&ss_song
[n_ss_ev
], e
, sizeof(union ss_ev
));
222 static int ss_ev_cmp(const void * v1
, const void * v2
)
223 /* softsynth song event compare function for qsort() */
225 struct ss_ev_generic
* e1
;
226 struct ss_ev_generic
* e2
;
229 e1
= (struct ss_ev_generic
*)v1
; e2
= (struct ss_ev_generic
*)v2
;
231 ret
= e1
->frame
- e2
->frame
;
234 ret
= e1
->type
- e2
->type
;
237 ret
= e1
->event_id
- e2
->event_id
;
243 static int ss_song_convert_events(void)
244 /* converts generic song_ev events to softsynth events */
249 int frame
, frame_ac
, f_frame
;
250 double fpw
, time_ac
, time_ac_m
;
255 /* resets the ss stream */
268 frame
= frame_ac
= f_frame
= 0;
269 time_ac
= time_ac_m
= 0;
272 /* travels the song events generating softsynth song events */
273 for(n
= 0;n
< n_song_ev
;n
++)
275 /* gets the song event */
278 /* calculates the frame */
279 frame
= ((e
->generic
.time
- time_ac
) * fpw
) + frame_ac
;
281 /* generic event data */
282 sse
.generic
.type
= e
->generic
.type
;
283 sse
.generic
.frame
= frame
;
284 sse
.generic
.trk_id
= e
->generic
.trk_id
;
285 sse
.generic
.event_id
= e
->generic
.event_id
;
287 /* account the biggest track seen */
288 if(b_track
< e
->generic
.trk_id
) b_track
= e
->generic
.trk_id
;
290 switch(e
->generic
.type
)
294 /* updates accumulations */
296 time_ac
= e
->generic
.time
;
298 /* calculates frames-per-whole based on new tempo */
299 fpw
= (double) ss_frequency
* 60.0;
300 fpw
/= e
->tempo
.tempo
/ 4.0;
303 sse
.tempo
.tempo
= e
->tempo
.tempo
;
310 /* just store the values */
313 time_ac_m
= e
->meter
.time
;
317 case SONG_EV_MEASURE
:
319 song_test_measure_boundary(e
->measure
.time
- time_ac_m
,
320 num
, den
, e
->measure
.line
);
325 /* convert to note on / off pairs */
327 sse
.note_on
.type
= SONG_EV_NOTE_ON
;
328 sse
.note_on
.note_id
= note_id
++;
329 sse
.note_on
.note
= e
->note
.note
;
330 sse
.note_on
.vol
= e
->note
.vol
;
334 frame
+= (int)(e
->note
.len
* fpw
);
336 sse
.note_off
.type
= SONG_EV_NOTE_OFF
;
337 sse
.note_off
.frame
= frame
;
344 /* move the cursor back */
346 frame_ac
-= (int)(e
->back
.len
* fpw
);
350 case SONG_EV_SS_PITCH_STRETCH
:
352 sse
.ss_pitch_stretch
.note_id
= note_id
++;
353 sse
.ss_pitch_stretch
.note
= e
->ss_pitch_stretch
.note
;
354 sse
.ss_pitch_stretch
.len
= e
->ss_pitch_stretch
.len
;
355 sse
.ss_pitch_stretch
.vol
= e
->ss_pitch_stretch
.vol
;
359 frame
+= (int)(e
->ss_pitch_stretch
.len
* fpw
);
361 sse
.note_off
.type
= SONG_EV_NOTE_OFF
;
362 sse
.note_off
.frame
= frame
;
367 case SONG_EV_SS_PRINT_WAVE_TEMPO
:
369 sse
.ss_print_wave_tempo
.note
= e
->ss_print_wave_tempo
.note
;
370 sse
.ss_print_wave_tempo
.len
= e
->ss_print_wave_tempo
.len
;
377 sse
.ss_wav
.file
= e
->ss_wav
.file
;
378 sse
.ss_wav
.base
= e
->ss_wav
.base
;
379 sse
.ss_wav
.min
= e
->ss_wav
.min
;
380 sse
.ss_wav
.max
= e
->ss_wav
.max
;
381 sse
.ss_wav
.loop_start
= e
->ss_wav
.loop_start
;
382 sse
.ss_wav
.loop_end
= e
->ss_wav
.loop_end
;
389 sse
.ss_pat
.file
= e
->ss_pat
.file
;
394 case SONG_EV_SS_SUSTAIN
:
396 sse
.ss_sustain
.sustain
= e
->ss_sustain
.sustain
;
401 case SONG_EV_SS_VIBRATO
:
403 sse
.ss_vibrato
.vib_depth
= e
->ss_vibrato
.vib_depth
;
404 sse
.ss_vibrato
.vib_freq
= e
->ss_vibrato
.vib_freq
;
409 case SONG_EV_SS_CHANNEL
:
411 sse
.ss_channel
.channel
= e
->ss_channel
.channel
;
412 sse
.ss_channel
.vol
= e
->ss_channel
.vol
;
417 case SONG_EV_SS_EFF_DELAY
:
418 case SONG_EV_SS_EFF_ECHO
:
419 case SONG_EV_SS_EFF_COMB
:
420 case SONG_EV_SS_EFF_ALLPASS
:
421 case SONG_EV_SS_EFF_FLANGER
:
422 case SONG_EV_SS_EFF_WOBBLE
:
423 case SONG_EV_SS_EFF_SQWOBBLE
:
424 case SONG_EV_SS_EFF_FADER
:
425 case SONG_EV_SS_EFF_REVERB
:
426 case SONG_EV_SS_EFF_OFF
:
428 sse
.ss_eff
.channel
= e
->ss_eff
.channel
;
429 sse
.ss_eff
.size
= e
->ss_eff
.size
;
430 sse
.ss_eff
.gain
= e
->ss_eff
.gain
;
431 sse
.ss_eff
.depth
= e
->ss_eff
.depth
;
432 sse
.ss_eff
.freq
= e
->ss_eff
.freq
;
433 sse
.ss_eff
.phase
= e
->ss_eff
.phase
;
434 sse
.ss_eff
.initial
= e
->ss_eff
.initial
;
435 sse
.ss_eff
.final
= e
->ss_eff
.final
;
440 case SONG_EV_SONG_INFO
:
442 sse
.song_info
.author
= e
->song_info
.author
;
443 sse
.song_info
.name
= e
->song_info
.name
;
448 case SONG_EV_MIDI_CHANNEL
:
449 case SONG_EV_MIDI_PROGRAM
:
454 case SONG_EV_NOTE_ON
:
455 case SONG_EV_NOTE_OFF
:
458 /* never found in generic song streams */
462 /* store the further frame seen */
463 if(f_frame
< frame
) f_frame
= frame
;
466 /* generates an end of event mark, a time after the last one */
467 sse
.generic
.type
= SONG_EV_END
;
468 sse
.generic
.frame
= f_frame
+ ss_frequency
;
469 sse
.generic
.event_id
= -1;
473 qsort(ss_song
, n_ss_ev
, sizeof(union ss_ev
), ss_ev_cmp
);
475 /* return the number of tracks */
480 static void ss_song_trace_events(void)
485 printf("** SOFTWARE SYNTHESIZER EVENT DUMP **\n\n");
486 printf("%10s %5s %5s Event and information\n",
487 "Frame", "Track", "Ev.ID");
488 printf("------------------------------------------------------------\n");
490 for(n
= 0, e
= ss_song
;n
< n_ss_ev
;n
++, e
++)
492 printf("%10d %5d %5d ",
493 e
->generic
.frame
, e
->generic
.trk_id
, e
->generic
.event_id
);
495 switch(e
->generic
.type
)
499 printf("SONG_EV_TEMPO ");
500 printf("%lf", e
->tempo
.tempo
);
503 case SONG_EV_SS_SUSTAIN
:
505 printf("SONG_EV_SS_SUSTAIN ");
506 printf("SUSTAIN:%lf", e
->ss_sustain
.sustain
);
509 case SONG_EV_SS_VIBRATO
:
511 printf("SONG_EV_SS_VIBRATO ");
512 printf("DEPTH:%lf FREQ:%lf",
513 e
->ss_vibrato
.vib_depth
,
514 e
->ss_vibrato
.vib_freq
);
517 case SONG_EV_SS_CHANNEL
:
519 printf("SONG_EV_SS_CHANNEL ");
520 printf("CHANNEL:%d VOL:%lf",
521 e
->ss_channel
.channel
,
527 printf("SONG_EV_SS_WAV ");
528 printf("FILE:'%s' BASE:%d MIN:%d MAX:%d START:%lf END:%lf",
529 e
->ss_wav
.file
, e
->ss_wav
.base
,
530 e
->ss_wav
.min
, e
->ss_wav
.max
,
531 e
->ss_wav
.loop_start
, e
->ss_wav
.loop_end
);
536 printf("SONG_EV_SS_PAT ");
537 printf("FILE:'%s'", e
->ss_pat
.file
);
540 case SONG_EV_SS_EFF_DELAY
:
542 printf("SONG_EV_SS_EFF_DELAY ");
543 printf("CHANNEL:%d ", e
->ss_eff
.channel
);
544 printf("SIZE:%lf ", e
->ss_eff
.size
);
547 case SONG_EV_SS_EFF_ECHO
:
549 printf("SONG_EV_SS_EFF_ECHO ");
550 printf("CHANNEL:%d ", e
->ss_eff
.channel
);
551 printf("SIZE:%lf ", e
->ss_eff
.size
);
552 printf("GAIN:%f ", e
->ss_eff
.gain
);
555 case SONG_EV_SS_EFF_COMB
:
557 printf("SONG_EV_SS_EFF_COMB ");
558 printf("CHANNEL:%d ", e
->ss_eff
.channel
);
559 printf("SIZE:%lf ", e
->ss_eff
.size
);
560 printf("GAIN:%f ", e
->ss_eff
.gain
);
563 case SONG_EV_SS_EFF_ALLPASS
:
565 printf("SONG_EV_SS_EFF_ALLPASS ");
566 printf("CHANNEL:%d ", e
->ss_eff
.channel
);
567 printf("SIZE:%lf ", e
->ss_eff
.size
);
568 printf("GAIN:%f ", e
->ss_eff
.gain
);
571 case SONG_EV_SS_EFF_FLANGER
:
573 printf("SONG_EV_SS_EFF_FLANGER ");
574 printf("CHANNEL:%d ", e
->ss_eff
.channel
);
575 printf("SIZE:%lf ", e
->ss_eff
.size
);
576 printf("GAIN:%f ", e
->ss_eff
.gain
);
577 printf("DEPTH:%lf ", e
->ss_eff
.depth
);
578 printf("FREQ:%lf PHASE:%lf", e
->ss_eff
.freq
,
582 case SONG_EV_SS_EFF_WOBBLE
:
584 printf("SONG_EV_SS_EFF_WOBBLE ");
585 printf("CHANNEL:%d ", e
->ss_eff
.channel
);
586 printf("FREQ:%lf PHASE:%lf", e
->ss_eff
.freq
,
590 case SONG_EV_SS_EFF_SQWOBBLE
:
592 printf("SONG_EV_SS_EFF_SQWOBBLE ");
593 printf("CHANNEL:%d ", e
->ss_eff
.channel
);
594 printf("FREQ:%lf PHASE:%lf", e
->ss_eff
.freq
,
598 case SONG_EV_SS_EFF_FADER
:
600 printf("SONG_EV_SS_EFF_FADER ");
601 printf("CHANNEL:%d ", e
->ss_eff
.channel
);
602 printf("SIZE:%lf ", e
->ss_eff
.size
);
603 printf("INITIAL:%f FINAL:%f", e
->ss_eff
.initial
,
607 case SONG_EV_SS_EFF_REVERB
:
609 printf("SONG_EV_SS_EFF_REVERB ");
610 printf("CHANNEL:%d ", e
->ss_eff
.channel
);
613 case SONG_EV_SS_EFF_OFF
:
615 printf("SONG_EV_SS_EFF_OFF ");
616 printf("CHANNEL:%d ", e
->ss_eff
.channel
);
619 case SONG_EV_SS_PITCH_STRETCH
:
621 printf("SONG_EV_SS_PITCH_STRETCH ");
622 printf("MIDI:%d LEN:%lf VOL:%f",
623 e
->ss_pitch_stretch
.note
,
624 e
->ss_pitch_stretch
.len
,
625 e
->ss_pitch_stretch
.vol
);
629 case SONG_EV_SS_PRINT_WAVE_TEMPO
:
631 printf("SONG_EV_SS_PRINT_WAVE_TEMPO ");
632 printf("MIDI:%d LEN:%lf",
633 e
->ss_print_wave_tempo
.note
,
634 e
->ss_print_wave_tempo
.len
);
637 case SONG_EV_SONG_INFO
:
639 printf("SONG_EV_SONG_INFO ");
640 printf("AUTHOR:'%s' NAME:'%s'",
645 case SONG_EV_NOTE_ON
:
647 printf("SONG_EV_NOTE_ON ");
648 printf("ID:%d MIDI:%d VOL:%f",
649 e
->note_on
.note_id
, e
->note_on
.note
,
653 case SONG_EV_NOTE_OFF
:
655 printf("SONG_EV_NOTE_OFF ");
656 printf("ID:%d", e
->note_off
.note_id
);
661 printf("SONG_EV_END ");
665 printf("** Unexpected type: %d",
676 int ss_song_render(int skip_secs
)
682 sample_t output
[SS_MAX_CHANNELS
];
685 double tempo
= 120.0;
690 /* convert the song to ss events */
691 n_tracks
= ss_song_convert_events();
695 ss_song_trace_events();
703 /* init the generators */
706 /* init the instruments */
707 for(n
= 0;n
< n_tracks
;n
++)
708 ss_ins_init(&ss_song_ins
[n
]);
710 /* calculate the frame to start playing */
711 skip_frames
= skip_secs
* ss_frequency
;
713 /* loop the events */
718 if(frame
% ss_frequency
== 0)
720 int m
= frame
/ ss_frequency
;
721 printf("[%02d:%02d]\r", m
/ 60, m
% 60);
726 /* process all events for this exact frame */
727 while(go
&& e
->generic
.frame
== frame
)
729 if(e
->generic
.type
== SONG_EV_NOTE_ON
||
730 e
->generic
.type
== SONG_EV_NOTE_OFF
||
731 e
->generic
.type
== SONG_EV_SS_PITCH_STRETCH
)
733 if(frame
< skip_frames
)
736 frame
= e
->generic
.frame
;
741 /* take the instrument */
742 if(e
->generic
.trk_id
< 0)
745 i
= &ss_song_ins
[e
->generic
.trk_id
];
747 switch(e
->generic
.type
)
749 case SONG_EV_NOTE_ON
:
751 ss_ins_note_on(i
, e
->note_on
.note
,
752 e
->note_on
.vol
, e
->note_on
.note_id
);
756 case SONG_EV_NOTE_OFF
:
758 ss_ins_note_off(i
, e
->note_off
.note_id
);
762 case SONG_EV_SS_SUSTAIN
:
764 ss_ins_set_sustain(i
, e
->ss_sustain
.sustain
);
768 case SONG_EV_SS_VIBRATO
:
770 ss_ins_set_vibrato(i
, e
->ss_vibrato
.vib_depth
,
771 e
->ss_vibrato
.vib_freq
);
775 case SONG_EV_SS_CHANNEL
:
777 ss_ins_set_channel(i
, e
->ss_channel
.channel
,
784 w
=ss_load_wave_file(e
->ss_wav
.file
,
785 ss_note_frequency(e
->ss_wav
.base
),
786 ss_note_frequency(e
->ss_wav
.min
),
787 ss_note_frequency(e
->ss_wav
.max
),
788 e
->ss_wav
.loop_start
, e
->ss_wav
.loop_end
);
790 /* fail if can't open wav */
793 printf("Can't load wav '%s'\n", e
->ss_wav
.file
);
797 ss_ins_add_layer(i
, w
);
803 if(ss_load_pat_file(i
, e
->ss_pat
.file
) < 0)
805 printf("Can't load pat '%s'\n", e
->ss_pat
.file
);
811 case SONG_EV_SS_EFF_DELAY
:
813 ss_eff_delay(&i
->effs
[e
->ss_eff
.channel
],
817 case SONG_EV_SS_EFF_ECHO
:
819 ss_eff_echo(&i
->effs
[e
->ss_eff
.channel
],
820 e
->ss_eff
.size
, e
->ss_eff
.gain
);
823 case SONG_EV_SS_EFF_COMB
:
825 ss_eff_comb(&i
->effs
[e
->ss_eff
.channel
],
826 e
->ss_eff
.size
, e
->ss_eff
.gain
);
829 case SONG_EV_SS_EFF_ALLPASS
:
831 ss_eff_allpass(&i
->effs
[e
->ss_eff
.channel
],
832 e
->ss_eff
.size
, e
->ss_eff
.gain
);
835 case SONG_EV_SS_EFF_FLANGER
:
837 ss_eff_flanger(&i
->effs
[e
->ss_eff
.channel
],
838 e
->ss_eff
.size
, e
->ss_eff
.gain
,
839 e
->ss_eff
.depth
, e
->ss_eff
.freq
,
843 case SONG_EV_SS_EFF_WOBBLE
:
845 ss_eff_wobble(&i
->effs
[e
->ss_eff
.channel
],
846 e
->ss_eff
.freq
, e
->ss_eff
.phase
);
850 case SONG_EV_SS_EFF_SQWOBBLE
:
852 ss_eff_square_wobble(&i
->effs
[e
->ss_eff
.channel
],
853 e
->ss_eff
.freq
, e
->ss_eff
.phase
);
857 case SONG_EV_SS_EFF_FADER
:
859 ss_eff_fader(&i
->effs
[e
->ss_eff
.channel
],
860 e
->ss_eff
.size
, e
->ss_eff
.initial
,
864 case SONG_EV_SS_EFF_REVERB
:
866 ss_eff_reverb(&i
->effs
[e
->ss_eff
.channel
]);
869 case SONG_EV_SS_EFF_OFF
:
871 ss_eff_off(&i
->effs
[e
->ss_eff
.channel
]);
876 /* just store the last tempo */
877 tempo
= e
->tempo
.tempo
;
880 case SONG_EV_SS_PITCH_STRETCH
:
883 freq
= ss_note_frequency(e
->ss_pitch_stretch
.note
);
884 w
= ss_ins_find_layer(i
, freq
, NULL
);
886 /* calculate optimal frequency */
887 freq
= ss_pitch_from_tempo(w
, tempo
,
888 e
->ss_pitch_stretch
.len
);
891 ss_ins_play(i
, freq
, e
->ss_pitch_stretch
.vol
,
892 e
->ss_pitch_stretch
.note_id
, w
);
896 case SONG_EV_SS_PRINT_WAVE_TEMPO
:
899 freq
= ss_note_frequency(e
->ss_print_wave_tempo
.note
);
900 w
= ss_ins_find_layer(i
, freq
, NULL
);
902 /* print the optimal tempo */
903 printf("Optimal tempo: %lf\n",
904 ss_tempo_from_wave(w
,
905 e
->ss_print_wave_tempo
.note
,
906 e
->ss_print_wave_tempo
.len
));
910 case SONG_EV_SONG_INFO
:
912 /* add a new song (track) */
913 cue_file_song_info(frame
, e
->song_info
.author
,
923 case SONG_EV_MIDI_CHANNEL
:
924 case SONG_EV_MIDI_PROGRAM
:
927 case SONG_EV_MEASURE
:
929 /* never found in ss song streams */
937 /* reset frame samples */
938 ss_output_init_frame(output
);
940 /* generate output from all instruments */
941 for(n
= 0;n
< n_tracks
;n
++)
942 ss_ins_frame(&ss_song_ins
[n
], output
);
944 /* dump to sampling driver */
945 ss_output_write(output
);
951 if(verbose
>= 1) printf("\n");