mipwinmminput.h

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/*
    
  This file is a part of EMIPLIB, the EDM Media over IP Library.
  
  Copyright (C) 2006-2011  Hasselt University - Expertise Centre for
                      Digital Media (EDM) (http://www.edm.uhasselt.be)

  This library is free software; you can redistribute it and/or
  modify it under the terms of the GNU Lesser General Public
  License as published by the Free Software Foundation; either
  version 2.1 of the License, or (at your option) any later version.

  This library 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
  Lesser General Public License for more details.

  You should have received a copy of the GNU Lesser General Public
  License along with this library; if not, write to the Free Software
  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  
  USA

*/

#ifndef MIPWINMMINPUT_H

#define MIPWINMMINPUT_H

#include "mipconfig.h"

#ifdef MIPCONFIG_SUPPORT_WINMM

#include "mipcomponent.h"
#include "miptime.h"
#include "mipsignalwaiter.h"
#include <jthread/jthread.h>
#include <windows.h>
#include <string>
#ifndef _WIN32_WCE
        #include <mmsystem.h>
#endif // _WIN32_WCE

class MIPRaw16bitAudioMessage;

class EMIPLIB_IMPORTEXPORT MIPWinMMInput : public MIPComponent, private jthread::JThread
{
public:
        MIPWinMMInput();
        ~MIPWinMMInput();

        bool open(int sampRate, int channels, MIPTime interval = MIPTime(0.020), 
                  MIPTime bufferTime = MIPTime(10.0), bool highPriority = false,
                  UINT deviceID = WAVE_MAPPER);

        bool close();
        bool push(const MIPComponentChain &chain, int64_t iteration, MIPMessage *pMsg);
        bool pull(const MIPComponentChain &chain, int64_t iteration, MIPMessage **pMsg);
private:
        void *Thread();
        static void CALLBACK inputCallback(HWAVEIN hwi, UINT uMsg, DWORD dwInstance, DWORD dwParam1, DWORD dwParam2);

        bool m_init;
        HWAVEIN m_device;
        int m_sampRate;
        int m_channels;
        uint16_t *m_pLastInputCopy;
        uint16_t *m_pMsgBuffer;
        MIPRaw16bitAudioMessage *m_pMsg;
        size_t m_bufSize,m_frames;
        bool m_gotLastInput;
        bool m_gotMsg;
        bool m_stopThread;
        WAVEHDR *m_inputBuffers;
        int m_numBuffers;
        MIPSignalWaiter m_sigWait,m_threadSigWait;
        jthread::JMutex m_frameMutex,m_stopMutex;
        MIPTime m_interval, m_sampleInstant;
        bool m_threadPrioritySet;

        std::string m_threadError;
};

#endif // MIPCONFIG_SUPPORT_WINMM

#endif // MIPWINMMINPUT_H