加入中文UI

main/audio_codecs/audio_codec.h

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+#ifndef _AUDIO_CODEC_H
+#define _AUDIO_CODEC_H
+
+#include <freertos/FreeRTOS.h>
+#include <freertos/task.h>
+#include <freertos/event_groups.h>
+#include <driver/i2s_std.h>
+
+#include <vector>
+#include <string>
+#include <functional>
+#include <list>
+#include <mutex>
+#include <condition_variable>
+
+#include "board.h"
+
+#define AUDIO_EVENT_OUTPUT_DONE (1 << 0)
+
+class AudioCodec {
+public:
+    AudioCodec();
+    virtual ~AudioCodec();
+    
+    virtual void SetOutputVolume(int volume);
+    virtual void EnableInput(bool enable);
+    virtual void EnableOutput(bool enable);
+
+    void Start();
+    void OnInputData(std::function<void(std::vector<int16_t>&& data)> callback);
+    void OutputData(std::vector<int16_t>& data);
+    void WaitForOutputDone();
+    void ClearOutputQueue();
+
+    inline bool duplex() const { return duplex_; }
+    inline bool input_reference() const { return input_reference_; }
+    inline int input_sample_rate() const { return input_sample_rate_; }
+    inline int output_sample_rate() const { return output_sample_rate_; }
+    inline int input_channels() const { return input_channels_; }
+    inline int output_channels() const { return output_channels_; }
+    inline int output_volume() const { return output_volume_; }
+
+private:
+    TaskHandle_t audio_input_task_ = nullptr;
+    TaskHandle_t audio_output_task_ = nullptr;
+    std::function<void(std::vector<int16_t>&& data)> on_input_data_; 
+    std::list<std::vector<int16_t>> audio_output_queue_;
+    std::mutex audio_output_queue_mutex_;
+    std::condition_variable audio_output_queue_cv_;
+    EventGroupHandle_t audio_event_group_ = nullptr;
+    IRAM_ATTR static bool on_sent(i2s_chan_handle_t handle, i2s_event_data_t *event, void *user_ctx);
+
+    void InputTask();
+    void OutputTask();
+
+protected:
+    i2s_chan_handle_t tx_handle_ = nullptr;
+    i2s_chan_handle_t rx_handle_ = nullptr;
+
+    bool duplex_ = false;
+    bool input_reference_ = false;
+    bool input_enabled_ = false;
+    bool output_enabled_ = false;
+    int input_sample_rate_ = 0;
+    int output_sample_rate_ = 0;
+    int input_channels_ = 1;
+    int output_channels_ = 1;
+    int output_volume_ = 70;
+
+    virtual int Read(int16_t* dest, int samples) = 0;
+    virtual int Write(const int16_t* data, int samples) = 0;
+};
+
+#endif // _AUDIO_CODEC_H