/*
  ZynAddSubFX - a software synthesizer

  Master.h - It sends Midi Messages to Parts, receives samples from parts,
             process them with system/insertion effects and mix them
  Copyright (C) 2002-2005 Nasca Octavian Paul
  Author: Nasca Octavian Paul

  This program is free software; you can redistribute it and/or modify
  it under the terms of version 2 of the GNU General Public License
  as published by the Free Software Foundation.

  This program is distributed in the hope that it will be useful,
  but WITHOUT ANY WARRANTY; without even the implied warranty of
  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  GNU General Public License (version 2 or later) for more details.

  You should have received a copy of the GNU General Public License (version 2)
  along with this program; if not, write to the Free Software Foundation,
  Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA

*/

#ifndef MASTER_H
#define MASTER_H
#include <pthread.h>

#include "../globals.h"
#include "Microtonal.h"

#include "Bank.h"
#include "Recorder.h"
#include "Dump.h"
#include "XMLwrapper.h"

#include "../Params/Controller.h"

typedef enum {
    MUTEX_TRYLOCK, MUTEX_LOCK, MUTEX_UNLOCK
} lockset;

extern Dump dump;

struct vuData {
    vuData(void);
    float outpeakl, outpeakr, maxoutpeakl, maxoutpeakr,
          rmspeakl, rmspeakr;
    int clipped;
};


/** It sends Midi Messages to Parts, receives samples from parts,
 *  process them with system/insertion effects and mix them */
class Master
{
    public:
        /** Constructor TODO make private*/
        Master();
        /** Destructor*/
        ~Master();

        static Master &getInstance();
        static void deleteInstance();

        /**Saves all settings to a XML file
         * @return 0 for ok or <0 if there is an error*/
        int saveXML(const char *filename);

        /**This adds the parameters to the XML data*/
        void add2XML(XMLwrapper *xml);

        void defaults();


        /**loads all settings from a XML file
         * @return 0 for ok or -1 if there is an error*/
        int loadXML(const char *filename);
        void applyparameters(bool lockmutex = true);

        void getfromXML(XMLwrapper *xml);

        /**get all data to a newly allocated array (used for VST)
         * @return the datasize*/
        int getalldata(char **data);
        /**put all data from the *data array to zynaddsubfx parameters (used for VST)*/
        void putalldata(char *data, int size);

        //Mutex control
        /**Control the Master's mutex state.
         * @param lockset either trylock, lock, or unlock.
         * @return true when successful false otherwise.*/
        bool mutexLock(lockset request);

        //Midi IN
        void noteOn(char chan, char note, char velocity);
        void noteOff(char chan, char note);
        void polyphonicAftertouch(char chan, char note, char velocity);
        void setController(char chan, int type, int par);
        void setProgram(char chan, unsigned int pgm);
        //void NRPN...


        void ShutUp();
        int shutup;

        void vuUpdate(const float *outl, const float *outr);

        /**Audio Output*/
        void AudioOut(float *outl, float *outr);
        /**Audio Output (for callback mode). This allows the program to be controled by an external program*/
        void GetAudioOutSamples(size_t nsamples,
                                unsigned samplerate,
                                float *outl,
                                float *outr);


        void partonoff(int npart, int what);

        /**parts \todo see if this can be made to be dynamic*/
        class Part * part[NUM_MIDI_PARTS];

        //parameters

        unsigned char Pvolume;
        unsigned char Pkeyshift;
        unsigned char Psysefxvol[NUM_SYS_EFX][NUM_MIDI_PARTS];
        unsigned char Psysefxsend[NUM_SYS_EFX][NUM_SYS_EFX];

        //parameters control
        void setPvolume(char Pvolume_);
        void setPkeyshift(char Pkeyshift_);
        void setPsysefxvol(int Ppart, int Pefx, char Pvol);
        void setPsysefxsend(int Pefxfrom, int Pefxto, char Pvol);

        //effects
        class EffectMgr * sysefx[NUM_SYS_EFX]; //system
        class EffectMgr * insefx[NUM_INS_EFX]; //insertion
//      void swapcopyeffects(int what,int type,int neff1,int neff2);

        //HDD recorder
        Recorder HDDRecorder;

        //part that's apply the insertion effect; -1 to disable
        short int Pinsparts[NUM_INS_EFX];


        //peaks for VU-meter
        void vuresetpeaks();
        //get VU-meter data
        vuData getVuData();

        //peaks for part VU-meters
        /**\todo synchronize this with a mutex*/
        float vuoutpeakpart[NUM_MIDI_PARTS];
        unsigned char fakepeakpart[NUM_MIDI_PARTS]; //this is used to compute the "peak" when the part is disabled

        Controller ctl;
        bool       swaplr; //if L and R are swapped

        //other objects
        Microtonal microtonal;
        Bank       bank;

        class FFTwrapper * fft;
        pthread_mutex_t mutex;
        pthread_mutex_t vumutex;


    private:
        vuData vu;
        float  volume;
        float  sysefxvol[NUM_SYS_EFX][NUM_MIDI_PARTS];
        float  sysefxsend[NUM_SYS_EFX][NUM_SYS_EFX];
        int    keyshift;

        //information relevent to generating plugin audio samples
        float *bufl;
        float *bufr;
        off_t  off;
        size_t smps;
};

#endif