/* -----------------------------------------------------------------------------

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other Intellectual Property Rights other than the copyrights concerning 

the Software are granted under this license.

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Copyright (c) 2019-2026, Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. & The VVenC Authors.

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     this list of conditions and the following disclaimer.

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     software without specific prior written permission.

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------------------------------------------------------------------------------------------- */

/**

  \file    MsgLog.h

  \brief   A logger for the logging callback function

*/

#pragma once

#include <functional>

#include <stdarg.h>

#include <mutex>

#include "CommonLib/CommonDef.h"

#include "vvenc/vvenc.h"

namespace vvenc {

static std::mutex m_msgMutex;

class MsgLog

{

public:

  MsgLog(){}

  MsgLog(void *msgCtx, vvencLoggingCallback msgFnc)

  {

    m_msgCtx = msgCtx;

    m_msgFnc = msgFnc;

  }

  ~MsgLog() {};

  void setCallback( void *msgCtx, vvencLoggingCallback msgFnc )

  {

    m_msgCtx = msgCtx;

    m_msgFnc = msgFnc;

  }

  void log( int level, const char* fmt, ... )

  {

    if ( this->m_msgFnc )

    {

      std::unique_lock<std::mutex> _lock( m_msgMutex );

      va_list args;

      va_start( args, fmt );

      m_msgFnc( m_msgCtx, level, fmt, args );

      va_end( args );

    }

    else if ( g_msgFnc )

    {

      // global log (deprecated)

      std::unique_lock<std::mutex> _lock( m_msgMutex );

      va_list args;

      va_start( args, fmt );

      g_msgFnc( g_msgFncCtx, level, fmt, args );

      va_end( args );

    }

}

private: 

  std::function<void( void*, int, const char*, va_list )> m_msgFnc{};

  void *m_msgCtx{};

};

} // namespace vvenc