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74 lines
2.8 KiB
74 lines
2.8 KiB
/* Audio Library for Teensy 3.X
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* Copyright (c) 2014, Paul Stoffregen, paul@pjrc.com
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*
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* Development of this audio library was funded by PJRC.COM, LLC by sales of
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* Teensy and Audio Adaptor boards. Please support PJRC's efforts to develop
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* open source software by purchasing Teensy or other PJRC products.
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*
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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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*
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* The above copyright notice, development funding notice, and this permission
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* notice shall be included in 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 output_i2s_f32_h_
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#define output_i2s_f32_h_
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#include "Arduino.h"
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#include "AudioStream_F32.h"
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#include "AudioStream.h"
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#include "DMAChannel.h"
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class AudioOutputI2S_F32 : public AudioStream_F32
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{
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//GUI: inputs:2, outputs:0 //this line used for automatic generation of GUI node
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public:
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AudioOutputI2S_F32(void) : AudioStream_F32(2, inputQueueArray) { begin();} //uses default AUDIO_SAMPLE_RATE and BLOCK_SIZE_SAMPLES from AudioStream.h
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AudioOutputI2S_F32(const AudioSettings_F32 &settings) : AudioStream_F32(2, inputQueueArray)
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{
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sample_rate_Hz = settings.sample_rate_Hz;
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audio_block_samples = settings.audio_block_samples;
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begin();
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}
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virtual void update(void);
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void begin(void);
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friend class AudioInputI2S_F32;
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static void convert_f32_to_i16( float32_t *p_f32, int16_t *p_i16, int len) ;
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protected:
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//AudioOutputI2S_F32(const AudioSettings &settings): AudioStream_F32(2, inputQueueArray) {} // to be used only inside AudioOutputI2Sslave !!
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static void config_i2s(void);
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static audio_block_f32_t *block_left_1st;
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static audio_block_f32_t *block_right_1st;
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static bool update_responsibility;
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static DMAChannel dma;
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static void isr(void);
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private:
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static audio_block_f32_t *block_left_2nd;
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static audio_block_f32_t *block_right_2nd;
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static uint16_t block_left_offset;
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static uint16_t block_right_offset;
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audio_block_f32_t *inputQueueArray[2];
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static float sample_rate_Hz;
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static int audio_block_samples;
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volatile uint8_t enabled = 1;
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};
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#endif
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