Dooho Yi
91f92c0e6c
migration from 'smp_v1p0' dev. for 'sampler' -> skip irrelavant note msg. and keep playing
63 lines
2 KiB
C++
63 lines
2 KiB
C++
/* Audio Library for Teensy 3.X
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* Copyright (c) 2014, Pete (El Supremo)
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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#ifndef synth_tonesweep_h_
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#define synth_tonesweep_h_
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#include "Arduino.h"
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#include "AudioStream.h"
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// A u d i o S y n t h T o n e S w e e p
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// Written by Pete (El Supremo) Feb 2014
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class AudioSynthToneSweep : public AudioStream
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{
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public:
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AudioSynthToneSweep(void) :
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AudioStream(0,NULL), sweep_busy(0)
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{ }
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boolean play(float t_amp,int t_lo,int t_hi,float t_time);
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virtual void update(void);
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unsigned char isPlaying(void);
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float read(void) {
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__disable_irq();
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uint64_t freq = tone_freq;
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unsigned char busy = sweep_busy;
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__enable_irq();
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if (!busy) return 0.0f;
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return (float)(freq >> 32);
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}
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private:
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short tone_amp;
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unsigned int tone_lo;
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unsigned int tone_hi;
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uint64_t tone_freq;
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uint64_t tone_phase;
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uint64_t tone_incr;
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int tone_sign;
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unsigned char sweep_busy;
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};
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#endif
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