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84 lines
2.1 KiB
C++
84 lines
2.1 KiB
C++
#pragma once
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#include "SinglePortModule.h"
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#include "concurrency/OSThread.h"
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#include "configuration.h"
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#include "NodeDB.h"
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#include <Arduino.h>
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#include <driver/adc.h>
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#include <functional>
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#if defined(ARCH_ESP32)
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#include <codec2.h>
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#include <ButterworthFilter.h>
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#include <FastAudioFIFO.h>
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#endif
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#define ADC_BUFFER_SIZE 320 // 40ms of voice in 8KHz sampling frequency
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#define ENCODE_CODEC2_SIZE 8
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#define ENCODE_FRAME_SIZE (ENCODE_CODEC2_SIZE * 5) // 5 codec2 frames of 8 bytes each
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class Codec2Thread : public concurrency::NotifiedWorkerThread
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{
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#if defined(ARCH_ESP32)
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struct CODEC2* codec2_state = NULL;
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int16_t output_buffer[ADC_BUFFER_SIZE] = {};
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public:
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Codec2Thread();
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protected:
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virtual void onNotify(uint32_t notification) override;
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#endif
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};
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class AudioModule : public SinglePortModule, private concurrency::OSThread
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{
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#if defined(ARCH_ESP32)
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bool firstTime = true;
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hw_timer_t* adcTimer = NULL;
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FastAudioFIFO audio_fifo;
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uint16_t adc_buffer_index = 0;
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public:
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unsigned char rx_encode_frame[ENCODE_FRAME_SIZE] = {};
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unsigned char tx_encode_frame[ENCODE_FRAME_SIZE] = {};
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int tx_encode_frame_index = 0;
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AudioModule();
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/**
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* Send our payload into the mesh
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*/
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void sendPayload(NodeNum dest = NODENUM_BROADCAST, bool wantReplies = false);
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protected:
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virtual int32_t runOnce() override;
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// void run_codec2();
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virtual MeshPacket *allocReply() override;
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/** Called to handle a particular incoming message
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* @return ProcessMessage::STOP if you've guaranteed you've handled this message and no other handlers should be considered for it
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*/
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virtual ProcessMessage handleReceived(const MeshPacket &mp) override;
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#endif
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};
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extern AudioModule *audioModule;
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extern Codec2Thread *codec2Thread;
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extern FastAudioFIFO audio_fifo;
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extern uint16_t adc_buffer[ADC_BUFFER_SIZE];
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extern uint16_t adc_buffer_index;
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extern portMUX_TYPE timerMux;
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extern int16_t speech[ADC_BUFFER_SIZE];
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enum RadioState { standby, rx, tx };
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extern volatile RadioState radio_state;
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extern adc1_channel_t mic_chan;
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IRAM_ATTR void am_onTimer();
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