I2c_Codec.h

/*
 * I2c_Codec.h
 *
 * Handle writing the registers to the TLV320AIC310x
 * series audio codecs, used on the BeagleBone Audio Cape.
 * This code is designed to bypass the ALSA driver and
 * configure the codec directly in a sensible way. It
 * is complemented by code running on the PRU which uses
 * the McASP serial port to transfer audio data.
 *
 *  Created on: May 25, 2014
 *      Author: Andrew McPherson
 */

#pragma once

#include "AudioCodec.h"
#include "I2c.h"
#include <array>

class I2c_Codec : public I2c, public AudioCodec
{
        short unsigned int pllJ;
        short unsigned int pllD;
        short unsigned int pllP;
        short unsigned int pllR;
        double PLLCLK_IN;
public:
        typedef enum {
                TLV320AIC3104 = 0,
                TLV320AIC3106,
        } CodecType;
        
        int writeRegister(unsigned int reg, unsigned int value);
        int readRegister(unsigned int reg);

        int initCodec();
        int setParameters(const AudioCodecParams& codecParams);
        AudioCodecParams getParameters();
        int startAudio(int shouldBeReady);
        int stopAudio();
        unsigned int getNumIns();
        unsigned int getNumOuts();
        float getSampleRate();

        int setPllJ(short unsigned int j);
        int setPllD(unsigned int d);
        int setPllP(short unsigned int p);
        int setPllR(unsigned int r);
        int setPllK(float k);
        int setNcodec(double NCODEC);
        int setAudioSamplingRate(float newSamplingRate);
        short unsigned int getPllJ();
        unsigned int getPllD();
        unsigned int getPllP();
        unsigned int getPllR();
        float getPllK();
        float getAudioSamplingRate();
        int setInputGain(int channel, float gain);
        int setDacVolume(int channel, float gain);
        int setHpVolume(int channel, float gain);
        int setLineOutVolume(int channel, float gain);
        int enableHpOut(bool enable);
        int enableLineOut(bool enable);
        int disable();
        int reset(){ return 0; } // Not needed for audio codec on Bela cape

        void setVerbose(bool isVerbose);

        I2c_Codec(int i2cBus, int I2cAddress, CodecType type, bool verbose = false);
        ~I2c_Codec();

        virtual McaspConfig& getMcaspConfig();
        int setMode(std::string str);
private:
        enum {kNumIoChannels = 2};
        int writeDacVolumeRegisters(bool mute);
        int writeAdcVolumeRegisters(bool mute);
        int writeOutputLevelControlReg(std::array<unsigned char,kNumIoChannels> const & regs, std::array<float,kNumIoChannels> const & volumes, unsigned char lowerHalf);
        int writeRoutingVolumeControlReg(std::array<unsigned char,kNumIoChannels> const & regs, std::array<float,kNumIoChannels>const & volumes, bool enabled);
        int writeHPVolumeRegisters();
        int writeLineOutVolumeRegisters();
protected:
        int configureDCRemovalIIR(bool enable); //called by startAudio()
        int codecType;
        std::array<int,kNumIoChannels> dacVolumeHalfDbs{};
        std::array<float,kNumIoChannels> inputGain{};
        std::array<float,kNumIoChannels> hpVolume{};
        std::array<float,kNumIoChannels> lineOutVolume{};
        AudioCodecParams params;
        McaspConfig mcaspConfig;
        bool running;
        bool verbose;
        bool hpEnabled = true;
        bool lineOutEnabled = true;
        bool differentialInput;
        bool unmutedPowerStage;
        double micBias;
        typedef enum
        {
                InitMode_init = 0,
                InitMode_noDeinit = 1,
                InitMode_noInit = 2,
        } InitMode;
        InitMode mode;
};