move all hardware init to boards

main/audio_codecs/no_audio_codec.h

@@ -0,0 +1,25 @@
+#ifndef _NO_AUDIO_CODEC_H
+#define _NO_AUDIO_CODEC_H
+
+#include "audio_codec.h"
+
+#include <driver/i2s_std.h>
+#include <driver/gpio.h>
+
+class NoAudioCodec : public AudioCodec {
+private:
+    i2s_chan_handle_t tx_handle_ = nullptr;
+    i2s_chan_handle_t rx_handle_ = nullptr;
+
+    virtual int Write(const int16_t* data, int samples) override;
+    virtual int Read(int16_t* dest, int samples) override;
+
+public:
+    // Duplex
+    NoAudioCodec(int input_sample_rate, int output_sample_rate, gpio_num_t bclk, gpio_num_t ws, gpio_num_t dout, gpio_num_t din);
+    // Simplex
+    NoAudioCodec(int input_sample_rate, int output_sample_rate, gpio_num_t spk_bclk, gpio_num_t spk_ws, gpio_num_t spk_dout, gpio_num_t mic_sck, gpio_num_t mic_ws, gpio_num_t mic_din);
+    virtual ~NoAudioCodec();
+};
+
+#endif // _NO_AUDIO_CODEC_H