Fixed small errors. Fixed maximum of concurrent voices.pull/32/head
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81ca62604c
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ae301b85b9
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/*
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Copyright (c) 2019, Holger Wirtz |
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Permission is hereby granted, free of charge, to any person obtaining a copy |
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of this software and associated documentation files (the "Software"), to deal |
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in the Software without restriction, including without limitation the rights |
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to use, copy, modify, merge, publish, distribute, sublicense, and/or sell |
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copies of the Software, and to permit persons to whom the Software is |
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furnished to do so, subject to the following conditions: |
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The above copyright notice and this permission notice shall be included in |
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all copies or substantial portions of the Software. |
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE |
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AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
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LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, |
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OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN |
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THE SOFTWARE. |
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*/ |
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#include <Arduino.h> |
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#include <Audio.h> |
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#include "effect_auto_pan.h" |
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/*************************************************************************/ |
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// A u d i o E f f e c t A u t o P a n
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// Written by Holger Wirtz
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// 20191205 - initial version
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void AudioEffectAutoPan::update(void) |
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{ |
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audio_block_t *in; |
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audio_block_t *mod; |
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audio_block_t *out[2]; |
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in = receiveReadOnly(0); |
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mod = receiveReadOnly(1); |
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out[0] = allocate(); |
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out[1] = allocate(); |
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if (in && mod && out[0] && out[1]) |
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{ |
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arm_q15_to_float(in->data, in_f, AUDIO_BLOCK_SAMPLES); |
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arm_q15_to_float(mod->data, pan_f, AUDIO_BLOCK_SAMPLES); |
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arm_offset_f32(pan_f, 1.0, pan_f, AUDIO_BLOCK_SAMPLES); |
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arm_scale_f32(pan_f, PI / 4.0, pan_f, AUDIO_BLOCK_SAMPLES); // PI/4
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// right
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for (uint8_t n = 0; n < AUDIO_BLOCK_SAMPLES; n++) |
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out_f[0][n] = in_f[n] * _pseudo_log * arm_sin_f32(pan_f[n]); |
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arm_float_to_q15 (out_f[0], out[0]->data, AUDIO_BLOCK_SAMPLES); |
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// left
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for (uint8_t n = 0; n < AUDIO_BLOCK_SAMPLES; n++) |
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out_f[1][n] = in_f[n] * _pseudo_log * arm_cos_f32(pan_f[n]); |
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arm_float_to_q15 (out_f[1], out[1]->data, AUDIO_BLOCK_SAMPLES); |
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if (in) |
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{ |
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release(in); |
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} |
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if (mod) |
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{ |
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release(mod); |
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} |
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for (uint8_t i = 0; i < 2; i++) |
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{ |
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if (out[i]) |
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{ |
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transmit(out[i], i); |
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release(out[i]); |
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} |
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} |
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} |
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} |
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@ -0,0 +1,54 @@ |
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/*
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Copyright (c) 2019, Holger Wirtz |
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Permission is hereby granted, free of charge, to any person obtaining a copy |
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|
of this software and associated documentation files (the "Software"), to deal |
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|
in the Software without restriction, including without limitation the rights |
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|
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell |
||||||
|
copies of the Software, and to permit persons to whom the Software is |
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|
furnished to do so, subject to the following conditions: |
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|
|
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|
The above copyright notice and this permission notice shall be included in |
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|
all copies or substantial portions of the Software. |
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|
|
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|
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
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|
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
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|
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE |
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|
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
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|
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, |
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|
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN |
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THE SOFTWARE. |
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*/ |
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#ifndef effect_auto_pan_h_ |
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#define effect_auto_pan_h_ |
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#include "Arduino.h" |
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#include "AudioStream.h" |
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/*************************************************************************/ |
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// A u d i o E f f e c t A u t o P a n
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// Written by Holger Wirtz
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// 20191205 - inital version
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class AudioEffectAutoPan : public AudioStream |
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{ |
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public: |
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AudioEffectAutoPan(void): |
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AudioStream(2, inputQueueArray) |
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{ |
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; |
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} |
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virtual void update(void); |
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private: |
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audio_block_t *inputQueueArray[2]; |
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audio_block_t *out[2]; |
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float in_f[AUDIO_BLOCK_SAMPLES]; |
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float out_f[2][AUDIO_BLOCK_SAMPLES]; |
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float pan_f[AUDIO_BLOCK_SAMPLES]; |
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const float _pseudo_log = 1048575 / (float)(1 << 20); |
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}; |
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#endif |
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