sai.h

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#pragma once
#ifndef DSY_SAI_H
#define DSY_SAI_H
 
#include "daisy_core.h"
 
namespace daisy
{
class SaiHandle
{
  public:
    struct Config
    {
        enum class Peripheral
        {
            SAI_1,
            SAI_2,
        };
 
        enum class SampleRate
        {
            SAI_8KHZ,
            SAI_16KHZ,
            SAI_32KHZ,
            SAI_48KHZ,
            SAI_96KHZ,
        };
 
        enum class BitDepth
        {
            SAI_16BIT,
            SAI_24BIT,
            SAI_32BIT,
        };
 
        enum class Sync
        {
            MASTER,
            SLAVE,
        };
 
        enum class Direction
        {
            TRANSMIT,
            RECEIVE,
        };
 
        Peripheral periph;
        struct
        {
            dsy_gpio_pin mclk, fs, sck, sa, sb;
        } pin_config;
        SampleRate sr;
        BitDepth   bit_depth;
        Sync       a_sync, b_sync;
        Direction  a_dir, b_dir;
    };
 
    enum class Result
    {
        OK,
        ERR,
    };
 
    SaiHandle() : pimpl_(nullptr) {}
    SaiHandle(const SaiHandle& other) = default;
    SaiHandle& operator=(const SaiHandle& other) = default;
 
    Result Init(const Config& config);
 
    Result DeInit();
 
    const Config& GetConfig() const;
 
    typedef void (*CallbackFunctionPtr)(int32_t* in, int32_t* out, size_t size);
 
    Result StartDma(int32_t*            buffer_rx,
                    int32_t*            buffer_tx,
                    size_t              size,
                    CallbackFunctionPtr callback);
 
    Result StopDma();
 
    float GetSampleRate();
 
    size_t GetBlockSize();
 
    float GetBlockRate();
 
    size_t GetOffset() const;
 
    inline bool IsInitialized() const
    {
        return pimpl_ == nullptr ? false : true;
    }
 
    class Impl; 
  private:
    Impl* pimpl_; 
};
 
} // namespace daisy
 
#endif