input_spdif3.h 2.1KB

4 years ago
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  1. /* Audio Library for Teensy 3.X
  2. * Copyright (c) 2019, Paul Stoffregen, paul@pjrc.com
  3. *
  4. * Development of this audio library was funded by PJRC.COM, LLC by sales of
  5. * Teensy and Audio Adaptor boards. Please support PJRC's efforts to develop
  6. * open source software by purchasing Teensy or other PJRC products.
  7. *
  8. * Permission is hereby granted, free of charge, to any person obtaining a copy
  9. * of this software and associated documentation files (the "Software"), to deal
  10. * in the Software without restriction, including without limitation the rights
  11. * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
  12. * copies of the Software, and to permit persons to whom the Software is
  13. * furnished to do so, subject to the following conditions:
  14. *
  15. * The above copyright notice, development funding notice, and this permission
  16. * notice shall be included in all copies or substantial portions of the Software.
  17. *
  18. * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  19. * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  20. * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
  21. * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  22. * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  23. * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
  24. * THE SOFTWARE.
  25. */
  26. // Frank Bösing
  27. #if defined(__IMXRT1052__) || defined(__IMXRT1062__)
  28. #ifndef _input_spdif3_h_
  29. #define _input_spdif3_h_
  30. #include "Arduino.h"
  31. #include "AudioStream.h"
  32. #include "DMAChannel.h"
  33. class AudioInputSPDIF3 : public AudioStream
  34. {
  35. public:
  36. AudioInputSPDIF3(void) : AudioStream(0, NULL) { begin(); }
  37. virtual void update(void);
  38. void begin(void);
  39. static bool pllLocked(void);
  40. static unsigned int sampleRate(void);
  41. protected:
  42. //AudioInputSPDIF3(int dummy): AudioStream(0, NULL) {} // to be used only inside AudioInputSPDIF3slave !!
  43. static bool update_responsibility;
  44. static DMAChannel dma;
  45. static void isr(void);
  46. private:
  47. static audio_block_t *block_left;
  48. static audio_block_t *block_right;
  49. static uint16_t block_offset;
  50. };
  51. #endif
  52. #endif