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  1. /* SPDIF for Teensy 3.X
  2. * Copyright (c) 2015, Frank Bösing, f.boesing@gmx.de,
  3. * Thanks to KPC & Paul Stoffregen!
  4. *
  5. * Permission is hereby granted, free of charge, to any person obtaining a copy
  6. * of this software and associated documentation files (the "Software"), to deal
  7. * in the Software without restriction, including without limitation the rights
  8. * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
  9. * copies of the Software, and to permit persons to whom the Software is
  10. * furnished to do so, subject to the following conditions:
  11. *
  12. * The above copyright notice, development funding notice, and this permission
  13. * notice shall be included in all copies or substantial portions of the Software.
  14. *
  15. * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  16. * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  17. * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
  18. * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  19. * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  20. * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
  21. * THE SOFTWARE.
  22. */
  23. #ifndef output_SPDIF2_h_
  24. #define output_SPDIF2_h_
  25. #include "Arduino.h"
  26. #include "AudioStream.h"
  27. #include "DMAChannel.h"
  28. class AudioOutputSPDIF2 : public AudioStream
  29. {
  30. public:
  31. AudioOutputSPDIF2(void) : AudioStream(2, inputQueueArray) { begin(); }
  32. virtual void update(void);
  33. void begin(void);
  34. //friend class AudioInputSPDIF;
  35. static void mute_PCM(const bool mute);
  36. protected:
  37. //AudioOutputSPDIF2(int dummy): AudioStream(2, inputQueueArray) {}
  38. static void config_SPDIF(void);
  39. static audio_block_t *block_left_1st;
  40. static audio_block_t *block_right_1st;
  41. static bool update_responsibility;
  42. static DMAChannel dma;
  43. static void isr(void);
  44. private:
  45. static uint32_t vucp;
  46. static audio_block_t *block_left_2nd;
  47. static audio_block_t *block_right_2nd;
  48. static uint16_t block_left_offset;
  49. static uint16_t block_right_offset;
  50. audio_block_t *inputQueueArray[2];
  51. };
  52. #endif