text: /* Audio Library for Teensy 3.X
   * Copyright (c) 2019, Paul Stoffregen, paul@pjrc.com
   *
   * Development of this audio library was funded by PJRC.COM, LLC by sales of
   * Teensy and Audio Adaptor boards.  Please support PJRC's efforts to develop
   * open source software by purchasing Teensy or other PJRC products.
   *
   * Permission is hereby granted, free of charge, to any person obtaining a copy
   * of this software and associated documentation files (the "Software"), to deal
   * in the Software without restriction, including without limitation the rights
   * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
   * copies of the Software, and to permit persons to whom the Software is
   * furnished to do so, subject to the following conditions:
   *
   * The above copyright notice, development funding notice, and this permission
   * notice shall be included in all copies or substantial portions of the Software.
   *
   * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
   * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
   * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
   * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
   * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
   * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
   * THE SOFTWARE.
   */
  // Frank Bösing
  
  #if defined(__IMXRT1052__) || defined(__IMXRT1062__)
  #ifndef _input_spdif3_h_
  #define _input_spdif3_h_
  
  #include "Arduino.h"
  #include "AudioStream.h"
  #include "DMAChannel.h"
  
  class AudioInputSPDIF3 : public AudioStream
  {
  public:
  	AudioInputSPDIF3(void) : AudioStream(0, NULL) { begin(); }
  	virtual void update(void);
  	void begin(void);
  	static bool pllLocked(void);
  	static unsigned int sampleRate(void);
  protected:
  	//AudioInputSPDIF3(int dummy): AudioStream(0, NULL) {} // to be used only inside AudioInputSPDIF3slave !!
  	static bool update_responsibility;
  	static DMAChannel dma;
  	static void isr(void);
  private:
  	static audio_block_t *block_left;
  	static audio_block_t *block_right;
  	static uint16_t block_offset;
  };
  
  #endif
  #endif
  