Dooho Yi
91f92c0e6c
migration from 'smp_v1p0' dev. for 'sampler' -> skip irrelavant note msg. and keep playing
78 lines
2.4 KiB
C++
78 lines
2.4 KiB
C++
/* Audio Library for Teensy 3.X
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* Copyright (c) 2014, Paul Stoffregen, paul@pjrc.com
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*
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* Development of this audio library was funded by PJRC.COM, LLC by sales of
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* Teensy and Audio Adaptor boards. Please support PJRC's efforts to develop
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* open source software by purchasing Teensy or other PJRC products.
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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, development funding notice, and this permission
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* notice shall be included in 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 analyze_peakdetect_h_
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#define analyze_peakdetect_h_
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#include "Arduino.h"
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#include "AudioStream.h"
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class AudioAnalyzePeak : public AudioStream
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{
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public:
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AudioAnalyzePeak(void) : AudioStream(1, inputQueueArray) {
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min_sample = 32767;
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max_sample = -32768;
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}
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bool available(void) {
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__disable_irq();
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bool flag = new_output;
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if (flag) new_output = false;
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__enable_irq();
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return flag;
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}
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float read(void) {
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__disable_irq();
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int min = min_sample;
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int max = max_sample;
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min_sample = 32767;
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max_sample = -32768;
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__enable_irq();
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min = abs(min);
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max = abs(max);
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if (min > max) max = min;
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return (float)max / 32767.0f;
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}
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float readPeakToPeak(void) {
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__disable_irq();
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int min = min_sample;
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int max = max_sample;
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min_sample = 32767;
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max_sample = -32768;
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__enable_irq();
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return (float)(max - min) / 32767.0f;
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}
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virtual void update(void);
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private:
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audio_block_t *inputQueueArray[1];
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volatile bool new_output;
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int16_t min_sample;
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int16_t max_sample;
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};
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#endif
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