//
// ZoneMinder SDP Class Interface, $Date: 2009-02-16 18:21:50 +0000 (Mon, 16 Feb 2009) $, $Revision: 2765 $
// Copyright (C) 2001-2008 Philip Coombes
// 
// This program is free software; you can redistribute it and/or
// modify it under the terms of the GNU General Public License
// as published by the Free Software Foundation; either version 2
// of the License, or (at your option) any later version.
// 
// 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 for more details.
// 
// You should have received a copy of the GNU General Public License
// along with this program; if not, write to the Free Software
// Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
// 

#ifndef ZM_SDP_H
#define ZM_SDP_H

#include "zm_ffmpeg.h"
#include "zm_utils.h"
#include <string>
#include <vector>

class SessionDescriptor {
protected:
  enum { PAYLOAD_TYPE_DYNAMIC=96 };

  struct StaticPayloadDesc {
    int payloadType;
    const char payloadName[6];
#if (LIBAVCODEC_VERSION_CHECK(52, 64, 0, 64, 0) || LIBAVUTIL_VERSION_CHECK(50, 14, 0, 14, 0))
    AVMediaType codecType;
#else
    enum CodecType codecType;
#endif
    _AVCODECID codecId;
    int clockRate;
    int autoChannels;
  };

  struct DynamicPayloadDesc {
    const char payloadName[32];
#if (LIBAVCODEC_VERSION_CHECK(52, 64, 0, 64, 0) || LIBAVUTIL_VERSION_CHECK(50, 14, 0, 14, 0))
    AVMediaType codecType;
#else
    enum CodecType codecType;
#endif
    _AVCODECID codecId;

    //int clockRate;
    //int autoChannels;
  };

public:
  class ConnInfo {
  protected:
    std::string mNetworkType;
    std::string mAddressType;
    std::string mAddress;
    int mTtl;
    int mNoAddresses;

  public:
    explicit ConnInfo( const std::string &connInfo );
  };

  class BandInfo {
  protected:
    std::string mType;
    int mValue;

  public:
    explicit BandInfo( const std::string &bandInfo );
  };

  class MediaDescriptor {
  protected:
    std::string mType;
    int mPort;
    int mNumPorts;
    std::string mTransport;
    int mPayloadType;

    std::string mPayloadDesc;
    std::string mControlUrl;
    double mFrameRate;
    int mClock;
    int mWidth;
    int mHeight;
    std::string mSprops;

    ConnInfo *mConnInfo;

  public:
    MediaDescriptor( const std::string &type, int port, int numPorts, const std::string &transport, int payloadType );

    const std::string &getType() const
    {
      return( mType );
    }
    int getPort() const
    {
      return( mPort );
    }
    int getNumPorts() const
    {
      return( mNumPorts );
    }
    const std::string &getTransport() const
    {
      return( mTransport );
    }
    const int getPayloadType() const
    {
      return( mPayloadType );
    }

    const std::string &getPayloadDesc() const
    {
      return( mPayloadDesc );
    }
    void setPayloadDesc( const std::string &payloadDesc )
    {
      mPayloadDesc = payloadDesc;
    }

    const std::string &getControlUrl() const
    {
      return( mControlUrl );
    }
    void setControlUrl( const std::string &controlUrl ) {
      mControlUrl = controlUrl;
    }

    const int getClock() const {
      return( mClock );
    }
    void setClock( int clock ) {
      mClock = clock;
    }

    void setFrameSize( int width, int height ) {
      mWidth = width;
      mHeight = height;
    }
    int getWidth() const {
      return( mWidth );
    }
    int getHeight() const {
      return( mHeight );
    }

    void setSprops(const std::string &props) {
      mSprops = props;
    }
    const std::string getSprops() const {
      return ( mSprops );
    }
    const double getFrameRate() const {
      return( mFrameRate );
    }
    void setFrameRate( double frameRate ) {
      mFrameRate = frameRate;
    }
  };

  typedef std::vector<MediaDescriptor *> MediaList;

protected:
  static StaticPayloadDesc smStaticPayloads[];
  static DynamicPayloadDesc smDynamicPayloads[];

protected:
  std::string mUrl;

  std::string mVersion;
  std::string mOwner;
  std::string mName;
  std::string mInfo;

  ConnInfo *mConnInfo;
  BandInfo *mBandInfo;
  std::string mTimeInfo;
  StringVector mAttributes;

  MediaList mMediaList;

public:
  SessionDescriptor( const std::string &url, const std::string &sdp );
  ~SessionDescriptor();

  const std::string &getUrl() const
  {
    return( mUrl );
  }

  int getNumStreams() const
  {
    return( mMediaList.size() );
  }
  MediaDescriptor *getStream( int index )
  {
    if ( index < 0 || (unsigned int)index >= mMediaList.size() )
      return nullptr;
    return( mMediaList[index] );
  }

  AVFormatContext *generateFormatContext() const;
};
#if 0
v=0
o=- 1239719297054659 1239719297054674 IN IP4 192.168.1.11
s=Media Presentation
e=NONE
c=IN IP4 0.0.0.0
b=AS:174
t=0 0
a=control:*
a=range:npt=now-
a=mpeg4-iod: "data:application/mpeg4-iod;base64,AoEAAE8BAf73AQOAkwABQHRkYXRhOmFwcGxpY2F0aW9uL21wZWc0LW9kLWF1O2Jhc2U2NCxBVGdCR3dVZkF4Y0F5U1FBWlFRTklCRUVrK0FBQWEyd0FBR3RzQVlCQkFFWkFwOERGUUJsQlFRTlFCVUFDN2dBQVBvQUFBRDZBQVlCQXc9PQQNAQUABAAAAAAAAAAAAAYJAQAAAAAAAAAAA0IAAkA+ZGF0YTphcHBsaWNhdGlvbi9tcGVnNC1iaWZzLWF1O2Jhc2U2NCx3QkFTZ1RBcUJYSmhCSWhRUlFVL0FBPT0EEgINAAACAAAAAAAAAAAFAwAAQAYJAQAAAAAAAAAA"
m=video 0 RTP/AVP 96
b=AS:110
a=framerate:5.0
a=control:trackID=1
a=rtpmap:96 MP4V-ES/90000
a=fmtp:96 profile-level-id=247; config=000001B0F7000001B509000001000000012008D48D8803250F042D14440F
a=mpeg4-esid:201
m=audio 0 RTP/AVP 0
b=AS:64
a=control:trackID=2
  
#endif

#endif // ZM_SDP_H