AudioCodec.h

#pragma once
#include <stdint.h>
#include <string>
#include "Mcasp.h"

struct AudioCodecParams {
        typedef enum {
                kTdmModeI2s,
                kTdmModeDsp,
                kTdmModeTdm,
        } TdmMode;
        typedef enum {
                kClockSourceMcasp,
                kClockSourceCodec,
                kClockSourceExternal,
        } ClockSource;
        unsigned int slotSize; // size of a slot in bits
        unsigned int startingSlot; // what slot in the TDM frame to place the first channel in
        unsigned int bitDelay; // additional offset in the TDM frame (in bits)
        double mclk; // frequency of the master clock passed to the codec
        double samplingRate; // audio sampling rate
        bool dualRate; // whether to run at single or double sampling rate
        TdmMode tdmMode; // what TDM mode to use
        ClockSource bclk; // who generates the bit clock
        ClockSource wclk; // who generates the frame sync
        void print();
};

class AudioCodec
{
public:
        virtual ~AudioCodec() {};
        virtual int initCodec() = 0;
        virtual int startAudio(int shouldBeReady) = 0;
        virtual int stopAudio() = 0;
        virtual unsigned int getNumIns() = 0;
        virtual unsigned int getNumOuts() = 0;
        virtual float getSampleRate() = 0;
        virtual int setInputGain(int channel, float newGain) = 0;
        virtual int setLineOutVolume(int channel, float gain) = 0;
        virtual int setHpVolume(int channel, float gain) = 0;
        virtual int disable() = 0;
        virtual int reset() = 0;
        virtual int setMode(std::string parameter) {return 0;};
        virtual McaspConfig& getMcaspConfig() = 0;
};