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93 lines
3.6 KiB
93 lines
3.6 KiB
11 months ago
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/*
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* ***** input_i2s2_f32.h ******
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*
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* 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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/*
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* Extended by Chip Audette, OpenAudio, May 2019
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* Converted to F32 and to variable audio block length
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* The F32 conversion is under the MIT License. Use at your own risk.
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*/
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// Updated OpenAudio F32 with this version from Chip Audette's Tympan Library Jan 2021 RSL
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#ifndef _INPUT_I2S2_F32_H_
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#define _INPUT_I2S2_F32_H_
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#include <Arduino.h>
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#include <arm_math.h>
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#include "AudioStream_F32.h"
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#include "AudioStream.h" //Do we really need this?? (Chip, 2020-10-31)
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#include "DMAChannel.h"
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class AudioInputI2S2_F32 : public AudioStream_F32
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{
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//GUI: inputs:0, outputs:2 //this line used for automatic generation of GUI nodes
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public:
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AudioInputI2S2_F32(void) : AudioStream_F32(0, NULL) { begin(); } //uses default AUDIO_SAMPLE_RATE and BLOCK_SIZE_SAMPLES from AudioStream.h
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AudioInputI2S2_F32(const AudioSettings_F32 &settings) : AudioStream_F32(0, NULL) {
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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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static void scale_i16_to_f32( float32_t *p_i16, float32_t *p_f32, int len) ;
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static void scale_i24_to_f32( float32_t *p_i24, float32_t *p_f32, int len) ;
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static void scale_i32_to_f32( float32_t *p_i32, float32_t *p_f32, int len);
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void begin(void);
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void begin(bool);
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void sub_begin_i32(void);
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//void sub_begin_i16(void);
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int get_isOutOfMemory(void) { return flag_out_of_memory; }
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void clear_isOutOfMemory(void) { flag_out_of_memory = 0; }
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//friend class AudioOutputI2S_F32;
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protected:
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AudioInputI2S2_F32(int dummy): AudioStream_F32(0, NULL) {} // to be used only inside AudioInputI2Sslave !!
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static bool update_responsibility;
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static DMAChannel dma;
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static void isr_32(void);
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static void isr(void);
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virtual void update_1chan(int, audio_block_f32_t *&);
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private:
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static audio_block_f32_t *block_left_f32;
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static audio_block_f32_t *block_right_f32;
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static float sample_rate_Hz;
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static int audio_block_samples;
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static uint16_t block_offset;
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static int flag_out_of_memory;
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static unsigned long update_counter;
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};
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class AudioInputI2S2slave_F32 : public AudioInputI2S2_F32
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{
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public:
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AudioInputI2S2slave_F32(void) : AudioInputI2S2_F32(0) { begin(); }
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void begin(void);
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friend void dma_ch1_isr(void);
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};
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#endif // _INPUT_I2S_F32_H_
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