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teensy-audio/Audio.h

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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. 

  27. #ifndef Audio_h_

  28. #define Audio_h_

  29. 

  30. // When changing multiple audio object settings that must update at

  31. // the same time, these functions allow the audio library interrupt

  32. // to be disabled.  For example, you may wish to begin playing a note

  33. // in response to reading an analog sensor.  If you have "velocity"

  34. // information, you might start the sample playing and also adjust

  35. // the gain of a mixer channel.  Use AudioNoInterrupts() first, then

  36. // make both changes to the 2 separate objects.  Then allow the audio

  37. // library to update with AudioInterrupts().  Both changes will happen

  38. // at the same time, because AudioNoInterrupts() prevents any updates

  39. // while you make changes.

  40. //

  41. #define AudioNoInterrupts() (NVIC_DISABLE_IRQ(IRQ_SOFTWARE))

  42. #define AudioInterrupts()   (NVIC_ENABLE_IRQ(IRQ_SOFTWARE))

  43. 

  44. 

  45. // include all the library headers, so a sketch can use a single

  46. // #include <Audio.h> to get the whole library

  47. //

  48. #include "analyze_fft256.h"

  49. #include "analyze_print.h"

  50. #include "analyze_tonedetect.h"

  51. #include "analyze_peakdetect.h"

  52. #include "control_sgtl5000.h"

  53. #include "control_wm8731.h"

  54. #include "effect_chorus.h"

  55. #include "effect_fade.h"

  56. #include "effect_flange.h"

  57. #include "filter_biquad.h"

  58. #include "filter_fir.h"

  59. #include "input_adc.h"

  60. #include "input_i2s.h"

  61. #include "mixer.h"

  62. #include "output_dac.h"

  63. #include "output_i2s.h"

  64. #include "output_pwm.h"

  65. #include "play_memory.h"

  66. #include "play_sd_raw.h"

  67. #include "play_sd_wav.h"

  68. #include "synth_tonesweep.h"

  69. #include "synth_waveform.h"

  70. 

  71. 

  72. // TODO: more audio processing objects....

  73. //  sine wave with frequency modulation (phase)

  74. //  waveforms with bandwidth limited tables for synth

  75. //  envelope: attack-decay-sustain-release, maybe other more complex?

  76. 

  77. #endif