#ifndef _AUDIO_CODEC_H
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#define _AUDIO_CODEC_H
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#include <freertos/FreeRTOS.h>
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#include <freertos/event_groups.h>
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#include <driver/i2s_std.h>
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#include <vector>
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#include <string>
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#include <functional>
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#include "board.h"
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#define AUDIO_CODEC_DMA_DESC_NUM 6
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#define AUDIO_CODEC_DMA_FRAME_NUM 240
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class AudioCodec {
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public:
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AudioCodec();
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virtual ~AudioCodec();
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virtual void SetOutputVolume(int volume);
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virtual void SetInputGain(float gain);
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virtual void EnableInput(bool enable);
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virtual void EnableOutput(bool enable);
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virtual void OutputData(std::vector<int16_t>& data);
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void OutputPcm(const int16_t* data, int samples);
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virtual bool InputData(std::vector<int16_t>& data);
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virtual void Start();
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inline bool duplex() const { return duplex_; }
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inline bool input_reference() const { return input_reference_; }
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inline int input_sample_rate() const { return input_sample_rate_; }
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inline int output_sample_rate() const { return output_sample_rate_; }
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inline int input_channels() const { return input_channels_; }
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inline int output_channels() const { return output_channels_; }
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inline int output_volume() const { return output_volume_; }
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inline float input_gain() const { return input_gain_; }
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inline bool input_enabled() const { return input_enabled_; }
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inline bool output_enabled() const { return output_enabled_; }
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protected:
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i2s_chan_handle_t tx_handle_ = nullptr;
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i2s_chan_handle_t rx_handle_ = nullptr;
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bool duplex_ = false;
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bool input_reference_ = false;
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bool input_enabled_ = false;
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bool output_enabled_ = false;
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int input_sample_rate_ = 0;
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int output_sample_rate_ = 0;
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int input_channels_ = 1;
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int output_channels_ = 1;
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int output_volume_ = 70;
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float input_gain_ = 0.0;
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virtual int Read(int16_t* dest, int samples) = 0;
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virtual int Write(const int16_t* data, int samples) = 0;
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};
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#endif // _AUDIO_CODEC_H
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