TempleOS V5.03 Nightly (ISO SHA-1 54758c6)
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Terry A. Davis authored and TempleOS-bot committed
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#help_index "Snd"
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public U0 SndTaskEndCB()
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{//Will turn-off snd when a task gets killed.
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Snd;
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Exit;
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}
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#help_index "Snd/Math;Math"
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public F64 Saw(F64 t,F64 period)
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{//Sawtooth. 0.0 - 1.0 think "(Sin+1)/2"
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if (period) {
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if (t>=0.0)
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return t%period/period;
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else
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return 1.0+t%period/period;
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} else
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return 0.0;
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}
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public F64 FullSaw(F64 t,F64 period)
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{//Plus&Minus Sawtooth. 1.0 - -1.0 think "Sin"
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if (period) {
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if (t>=0.0)
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return 2.0*(t%period/period)-1.0;
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else
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return 2.0*(t%period/period)+1.0;
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} else
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return 0.0;
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}
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public F64 Caw(F64 t,F64 period)
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{//Cawtooth. 1.0 - 0.0 think "(Cos+1)/2"
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if (period) {
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if (t>=0.0)
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return 1.0-t%period/period;
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else
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return -(t%period)/period;
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} else
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return 1.0;
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}
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public F64 FullCaw(F64 t,F64 period)
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{//Plus&Minus Cawtooth. 1.0 - -1.0 think "Cos"
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if (period) {
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if (t>=0.0)
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return -2.0*(t%period/period)+1.0;
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else
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return -2.0*(t%period/period)-1.0;
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} else
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return 1.0;
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}
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public F64 Tri(F64 t,F64 period)
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{//Triangle waveform. 0.0 - 1.0 - 0.0
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if (period) {
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t=2.0*(Abs(t)%period)/period;
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if (t<=1.0)
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return t;
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else
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return 2.0-t;
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} else
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return 0.0;
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}
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public F64 FullTri(F64 t,F64 period)
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{//Plus&Minus Triangle waveform. 0.0 - 1.0 - 0.0 - -1.0 -0.0
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if (period) {
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t=4.0*(t%period)/period;
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if (t<=-1.0) {
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if (t<=-3.0)
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return t+4.0;
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else
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return -2.0-t;
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} else {
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if (t<=1.0)
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return t;
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else if (t<=3.0)
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return 2.0-t;
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else
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return t-4.0;
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}
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} else
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return 0.0;
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}
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#help_index "Snd/Music"
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public class CMusicGlbls
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{
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U8 *cur_song;
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CTask *cur_song_task;
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I64 octave;
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F64 note_len;
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U8 note_map[7];
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Bool mute;
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I64 meter_top,meter_bottom;
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F64 tempo,stacatto_factor;
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//If you wish to sync with a
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//note in a Play() string. 0 is the start
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I64 play_note_num;
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F64 tM_correction,last_Beat,last_tM;
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} music={NULL,NULL,4,1.0,{0,2,3,5,7,8,10},FALSE,4,4,2.5,0.9,0,0,0,0};
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#help_index "Snd/Music;Time/Seconds"
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public F64 tM()
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{//Time in seconds synced to music subsystem.
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return (cnts.jiffies+music.tM_correction)/JIFFY_FREQ;
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}
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public F64 Beat()
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{//Time in music beats.
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F64 res,cur_tM;
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PUSHFD
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CLI
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if (mp_cnt>1)
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while (LBts(&sys_semas[SEMA_TMBEAT],0))
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PAUSE
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cur_tM=tM;
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res=music.last_Beat;
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if (music.tempo)
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res+=(cur_tM-music.last_tM)*music.tempo;
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music.last_tM=cur_tM;
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music.last_Beat=res;
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LBtr(&sys_semas[SEMA_TMBEAT],0);
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POPFD
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return res;
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}
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#help_index "Snd/Music"
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U8 *MusicSetOctave(U8 *st)
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{
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I64 ch;
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ch=*st++;
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while ('0'<=ch<='9') {
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music.octave=ch-'0';
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ch=*st++;
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}
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return --st;
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}
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U8 *MusicSetMeter(U8 *st)
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{
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I64 ch;
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ch=*st++;
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while (ch=='M') {
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ch=*st++;
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if ('0'<=ch<='9') {
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music.meter_top=ch-'0';
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ch=*st++;
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}
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if (ch=='/')
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ch=*st++;
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if ('0'<=ch<='9') {
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music.meter_bottom=ch-'0';
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ch=*st++;
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}
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}
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return --st;
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}
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U8 *MusicSetNoteLen(U8 *st)
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{
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Bool cont=TRUE;
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do {
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switch (*st++) {
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case 'w': music.note_len=4.0; break;
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case 'h': music.note_len=2.0; break;
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case 'q': music.note_len=1.0; break;
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case 'e': music.note_len=0.5; break;
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case 's': music.note_len=0.25; break;
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case 't': music.note_len=2.0*music.note_len/3.0; break;
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case '.': music.note_len=1.5*music.note_len; break;
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default:
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st--;
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cont=FALSE;
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}
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} while (cont);
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return st;
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}
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public I8 Note2Ona(I64 note,I64 octave=4)
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{//Note to ona. Mid C is ona=51, note=3 and octave=4.
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if (note<3)
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return (octave+1)*12+note;
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else
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return octave*12+note;
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}
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public I8 Ona2Note(I8 ona)
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{//Ona to note in octave. Mid C is ona=51, note=3 and octave=4.
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return ona%12;
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}
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public I8 Ona2Octave(I8 ona)
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{//Ona to octave. Mid C is ona=51, note=3 and octave=4.
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I64 note=ona%12,octave=ona/12;
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if (note<3)
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return octave-1;
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else
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return octave;
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}
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public U0 Play(U8 *st,U8 *words=NULL)
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{/* Notes are entered with a capital letter.
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Octaves are entered with a digit and
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stay set until changed. Mid C is octave 4.
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Durations are entered with
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'w' whole note
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'h' half note
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'q' quarter note
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'e' eighth note
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't' sets to 2/3rds the current duration
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'.' sets to 1.5 times the current duration
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durations stay set until changed.
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'(' tie, placed before the note to be extended
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$LK,"music.meter_top",A="MN:CMusicGlbls"$,$LK,"music.meter_bottom",A="MN:CMusicGlbls"$ is set with
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"M3/4"
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"M4/4"
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etc.
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Sharp and flat are done with '#' or 'b'.
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The var music.stacatto_factor can
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be set to a range from 0.0 to 1.0.
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The var music.tempo is quarter-notes
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per second. It defaults to
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2.5 and gets faster when bigger.
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*/
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U8 *word,*last_st;
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I64 note,octave,i=0,ona,timeout_val,timeout_val2;
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Bool tie;
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F64 d,on_jiffies,off_jiffies;
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music.play_note_num=0;
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while (*st) {
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timeout_val=cnts.jiffies;
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tie=FALSE;
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do {
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last_st=st;
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if (*st=='(') {
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tie=TRUE;
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st++;
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} else {
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st=MusicSetMeter(st);
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st=MusicSetOctave(st);
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st=MusicSetNoteLen(st);
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}
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} while (st!=last_st);
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if (!*st) break;
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note=*st++-'A';
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if (note<7) {
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note=music.note_map[note];
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octave=music.octave;
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if (*st=='b') {
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note--;
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if (note==2)
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octave--;
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st++;
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} else if (*st=='#') {
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note++;
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if (note==3)
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octave++;
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st++;
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}
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ona=Note2Ona(note,octave);
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} else
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ona=0;
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if (words && (word=LstSub(i++,words)) && StrCmp(word," "))
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"%s",word;
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d=JIFFY_FREQ*music.note_len/music.tempo;
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on_jiffies =d*music.stacatto_factor;
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off_jiffies =d*(1.0-music.stacatto_factor);
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timeout_val+=on_jiffies;
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timeout_val2=timeout_val+off_jiffies;
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if (!music.mute)
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Snd(ona);
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SleepUntil(timeout_val);
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music.tM_correction+=on_jiffies-ToI64(on_jiffies);
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if (!music.mute && !tie)
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Snd;
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SleepUntil(timeout_val2);
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music.tM_correction+=off_jiffies-ToI64(off_jiffies);
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music.play_note_num++;
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}
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}
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U0 MusicSettingsRst()
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{
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music.play_note_num=0;
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music.stacatto_factor=0.9;
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music.tempo=2.5;
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music.octave=4;
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music.note_len=1.0;
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music.meter_top=4;
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music.meter_bottom=4;
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SndRst;
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PUSHFD
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CLI
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if (mp_cnt>1)
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while (LBts(&sys_semas[SEMA_TMBEAT],0))
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PAUSE
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music.last_tM=tM;
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music.last_Beat=0.0;
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LBtr(&sys_semas[SEMA_TMBEAT],0);
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POPFD
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}
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MusicSettingsRst;
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U0 CurSongTask()
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{
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Fs->task_end_cb=&SndTaskEndCB;
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while (TRUE)
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Play(music.cur_song);
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}
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#help_index "Snd"
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#define SE_NOISE 0
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#define SE_SWEEP 1
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class CSoundEffectFrame
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{
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I32 type;
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I8 ona1,ona2;
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F64 duration;
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};
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U0 SoundEffectEndTaskCB()
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{
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Free(FramePtr("CSoundEffectFrame"));
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music.mute--;
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SndTaskEndCB;
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}
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U0 SoundEffectTask(CSoundEffectFrame *ns)
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{
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I64 i,ona;
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F64 t0=tS,t,timeout=t0+ns->duration;
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FramePtrAdd("CSoundEffectFrame",ns);
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Fs->task_end_cb=&SoundEffectEndTaskCB;
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switch (ns->type) {
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case SE_NOISE:
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i=MaxI64(ns->ona2-ns->ona1,1);
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while (tS<timeout) {
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ona=RandU16%i+ns->ona1;
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Snd(ona);
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t=Clamp(3000.0/Ona2Freq(ona),1.0,50.0);
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if (t+tS>timeout)
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t=timeout-tS;
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Sleep(t);
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}
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break;
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case SE_SWEEP:
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while (tS<timeout) {
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t=(tS-t0)/ns->duration;
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ona=(1.0-t)*ns->ona1+t*ns->ona2;
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Snd(ona);
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t=Clamp(3000.0/Ona2Freq(ona),1.0,50.0);
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if (t+tS>timeout)
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t=timeout-tS;
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Sleep(t);
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}
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break;
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}
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}
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public CTask *Noise(I64 mS,F64 min_ona,F64 max_ona)
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{//Make white noise for given number of mS.
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CSoundEffectFrame *ns;
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if (mS>0) {
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ns=MAlloc(sizeof(CSoundEffectFrame));
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ns->type=SE_NOISE;
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ns->duration=mS/1000.0;
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ns->ona1=min_ona;
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ns->ona2=max_ona;
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music.mute++;
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return Spawn(&SoundEffectTask,ns,"Noise",,Fs);
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} else
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return NULL;
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}
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public CTask *Sweep(I64 mS,F64 ona1,F64 ona2)
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{//Sweep through freq range in given number of mS.
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CSoundEffectFrame *ns;
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if (mS>0) {
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ns=MAlloc(sizeof(CSoundEffectFrame));
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ns->type=SE_SWEEP;
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ns->duration=mS/1000.0;
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ns->ona1=ona1;
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ns->ona2=ona2;
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music.mute++;
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return Spawn(&SoundEffectTask,ns,"Noise",,Fs);
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} else
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return NULL;
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}
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