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  1. /* Audio Library for Teensy 3.X
  2. * Copyright (c) 2014, 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. #ifndef record_queue_h_
  27. #define record_queue_h_
  28. #include "Arduino.h"
  29. #include "AudioStream.h"
  30. class AudioRecordQueue : public AudioStream
  31. {
  32. private:
  33. #if defined(__IMXRT1062__) || defined(__MK66FX1M0__) || defined(__MK64FX512__)
  34. static const int max_buffers = 209;
  35. #else
  36. static const int max_buffers = 53;
  37. #endif
  38. public:
  39. AudioRecordQueue(void) : AudioStream(1, inputQueueArray),
  40. userblock(NULL), head(0), tail(0), enabled(0) { }
  41. void begin(void) {
  42. clear();
  43. enabled = 1;
  44. }
  45. int available(void);
  46. void clear(void);
  47. int16_t * readBuffer(void);
  48. void freeBuffer(void);
  49. void end(void) {
  50. enabled = 0;
  51. }
  52. virtual void update(void);
  53. private:
  54. audio_block_t *inputQueueArray[1];
  55. audio_block_t * volatile queue[max_buffers];
  56. audio_block_t *userblock;
  57. volatile uint8_t head, tail, enabled;
  58. };
  59. #endif