multimediacommsengine/mmceshared/src/mcecomh263codec.cpp
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     1 /*
       
     2 * Copyright (c) 2006 Nokia Corporation and/or its subsidiary(-ies).
       
     3 * All rights reserved.
       
     4 * This component and the accompanying materials are made available
       
     5 * under the terms of "Eclipse Public License v1.0"
       
     6 * which accompanies this distribution, and is available
       
     7 * at the URL "http://www.eclipse.org/legal/epl-v10.html".
       
     8 *
       
     9 * Initial Contributors:
       
    10 * Nokia Corporation - initial contribution.
       
    11 *
       
    12 * Contributors:
       
    13 *
       
    14 * Description:    
       
    15 *
       
    16 */
       
    17 
       
    18 
       
    19 
       
    20 
       
    21 #include "mcecomh263codec.h"
       
    22 
       
    23 
       
    24 const TReal KMceH263DefaultLoweredFrameRate = 12;
       
    25 
       
    26 // ============================ MEMBER FUNCTIONS ===============================
       
    27 
       
    28 
       
    29 // -----------------------------------------------------------------------------
       
    30 // CMceComH263Codec::NewL
       
    31 // -----------------------------------------------------------------------------
       
    32 //
       
    33 CMceComH263Codec* CMceComH263Codec::NewL( TBuf8<KMceMaxSdpNameLength> aSdpName )
       
    34     {
       
    35     CMceComH263Codec* self = NewLC( aSdpName );
       
    36     CleanupStack::Pop( self );
       
    37     return self;
       
    38     
       
    39     }
       
    40 
       
    41 // -----------------------------------------------------------------------------
       
    42 // CMceComH263Codec::NewLC
       
    43 // -----------------------------------------------------------------------------
       
    44 //
       
    45 CMceComH263Codec* CMceComH263Codec::NewLC( TBuf8<KMceMaxSdpNameLength> aSdpName )
       
    46     {
       
    47     CMceComH263Codec* self = new (ELeave) CMceComH263Codec();
       
    48     CleanupStack::PushL( self );
       
    49     self->ConstructL( aSdpName );
       
    50     return self;
       
    51     }
       
    52 
       
    53 
       
    54 // -----------------------------------------------------------------------------
       
    55 // CMceComH263Codec::~CMceComH263Codec
       
    56 // -----------------------------------------------------------------------------
       
    57 //
       
    58 CMceComH263Codec::~CMceComH263Codec()
       
    59     {
       
    60     }
       
    61     
       
    62 
       
    63 // -----------------------------------------------------------------------------
       
    64 // CMceComH263Codec::CMceComH263Codec
       
    65 // -----------------------------------------------------------------------------
       
    66 //
       
    67 CMceComH263Codec::CMceComH263Codec()
       
    68     :CMceComVideoCodec()
       
    69     {
       
    70     iClockRate = KMceH263ClockRate;
       
    71     iFrameRate = KMceH263DefaultLoweredFrameRate;
       
    72     iResolutionWidth = KMceH263FrameWidth;
       
    73     iResolutionHeight = KMceH263FrameHeight;
       
    74     iBitrate = KMceH263DefaultBitrate;
       
    75 	iMaxBitRate = KMceH263DefaultMaxBitrate;
       
    76 	iAllowedBitrates = KMceH263DefaultAllowedBitrate;
       
    77     iFrameSize = KMceH263DefaultFrameSize;
       
    78     // Defaults should be defined in MCE API
       
    79     const TUint8 KMceDefaultH263PayloadType = 97;
       
    80 	iPayloadType = KMceDefaultH263PayloadType;
       
    81     
       
    82     iReceiveFrameRate = KMceH263FrameRate;
       
    83     }
       
    84 
       
    85 
       
    86 // -----------------------------------------------------------------------------
       
    87 // CMceComH263Codec::ConstructL
       
    88 // -----------------------------------------------------------------------------
       
    89 //
       
    90 CMceComVideoCodec* CMceComH263Codec::CloneL()
       
    91     {
       
    92     CMceComH263Codec* copy = new (ELeave) CMceComH263Codec();
       
    93     CleanupStack::PushL( copy );
       
    94     copy->ConstructL( *this );
       
    95     CleanupStack::Pop( copy );
       
    96     return copy;
       
    97     
       
    98     }
       
    99 
       
   100 
       
   101 // -----------------------------------------------------------------------------
       
   102 // CMceComH263Codec::ConstructL
       
   103 // -----------------------------------------------------------------------------
       
   104 //
       
   105 void CMceComH263Codec::ConstructL( TBuf8<KMceMaxSdpNameLength> aSdpName )
       
   106     {
       
   107     CMceComVideoCodec::ConstructL( aSdpName );
       
   108     
       
   109     // NOTE: 1998 mode codec is disabled by default in order to prevent
       
   110     // default offer to contain both 2000 and 1998 mode versions
       
   111     if ( iSdpName.CompareF( KMceSDPNameH2631998 ) == 0 )
       
   112         {
       
   113         iState = CMceCodec::EDisabled; 
       
   114         }
       
   115     }
       
   116 
       
   117 
       
   118 // -----------------------------------------------------------------------------
       
   119 // CMceComH263Codec::ConstructL
       
   120 // -----------------------------------------------------------------------------
       
   121 //
       
   122 void CMceComH263Codec::ConstructL( CMceComH263Codec& aCodec )
       
   123     {
       
   124     CMceComVideoCodec::ConstructL( aCodec );
       
   125     }
       
   126 
       
   127 
       
   128 // -----------------------------------------------------------------------------
       
   129 // CMceComH263Codec::SetBitrate
       
   130 // -----------------------------------------------------------------------------
       
   131 //
       
   132 TInt CMceComH263Codec::SetBitrate( TUint aBitrate )
       
   133     {
       
   134 	return CMceComCodec::SetBitrate( aBitrate );
       
   135     }
       
   136     
       
   137 // -----------------------------------------------------------------------------
       
   138 // CMceComH263Codec::SetAllowedBitrates
       
   139 // -----------------------------------------------------------------------------
       
   140 //
       
   141 TInt CMceComH263Codec::SetAllowedBitrates( TUint aBitrates )
       
   142     {
       
   143     TInt error = KErrNone;
       
   144     
       
   145     //Confirm that the bitrate mask is valid
       
   146     //I.e. after all the valid bitrates are set to zero the value should be zero
       
   147     if ( !aBitrates || 
       
   148         ( aBitrates >> 8 ) > 0 ) 
       
   149         {
       
   150         error = KErrArgument;
       
   151         }
       
   152     else
       
   153         {
       
   154         CMceComCodec::SetAllowedBitrates( KMceAllowedH263BitrateAll );
       
   155         iAllowedBitrates &= aBitrates;
       
   156         CMceComVideoCodec::SetMaxBitrate( GetMaxBitRate() );
       
   157         if ( iBitrate > iMaxBitRate )
       
   158             {
       
   159             error = CMceComCodec::SetBitrate( iMaxBitRate );
       
   160             }
       
   161         }
       
   162     
       
   163     return error;
       
   164     
       
   165     }
       
   166 
       
   167 
       
   168 // -----------------------------------------------------------------------------
       
   169 // CMceComH263Codec::GetMaxBitRate
       
   170 // -----------------------------------------------------------------------------
       
   171 //
       
   172 TUint CMceComH263Codec::GetMaxBitRate()
       
   173     {
       
   174     if( iAllowedBitrates & KMceAllowedH263Bitrate45 )
       
   175         {
       
   176         return KMceH263Level45Bitrate;
       
   177         }
       
   178     else if( iAllowedBitrates & KMceAllowedH263Bitrate10 )
       
   179         {
       
   180         return KMceH263Level10Bitrate;
       
   181         }
       
   182     else
       
   183         {
       
   184         return 0;    
       
   185         }
       
   186     
       
   187     }
       
   188 
       
   189 // -----------------------------------------------------------------------------
       
   190 // CMceComH263Codec::SetMaxBitrate
       
   191 // -----------------------------------------------------------------------------
       
   192 //
       
   193 TInt CMceComH263Codec::SetMaxBitrate( TUint aMaxBitrate )
       
   194     {
       
   195     TInt status = KErrNone;
       
   196 	switch( aMaxBitrate )
       
   197 	    {
       
   198 	    case KMceH263Level10Bitrate:
       
   199 	        {
       
   200 	        status = SetAllowedBitrates( KMceAllowedH263Bitrate10 );
       
   201 	        break;
       
   202 	        }
       
   203 	    case KMceH263Level45Bitrate:
       
   204 	        {
       
   205 	        status = SetAllowedBitrates( KMceAllowedH263Bitrate45 );
       
   206 	        break;
       
   207 	        }
       
   208         default:
       
   209             {
       
   210             status = KErrNotSupported;
       
   211             break;
       
   212             }
       
   213 	    }
       
   214 
       
   215     return status;
       
   216     
       
   217     }
       
   218 
       
   219 // -----------------------------------------------------------------------------
       
   220 // CMceComH263Codec::ResolveAllowedBitrates
       
   221 // -----------------------------------------------------------------------------
       
   222 //
       
   223 TInt CMceComH263Codec::ResolveAllowedBitrates( 
       
   224     TUint aBitrate, TUint& aAllowedBitrates )
       
   225     {
       
   226     TInt retVal( KErrNone );
       
   227     
       
   228     if ( aBitrate <= KMceH263Level10Bitrate )
       
   229         {
       
   230         aAllowedBitrates = KMceAllowedH263Bitrate10;
       
   231         }
       
   232     else if ( aBitrate <= KMceH263Level45Bitrate )
       
   233         {
       
   234         aAllowedBitrates = KMceAllowedH263BitrateAll;
       
   235         }
       
   236     else 
       
   237         {
       
   238         retVal = KErrNotSupported;
       
   239         }
       
   240         
       
   241     return retVal;
       
   242     }
       
   243         
       
   244 // End of File
       
   245 
       
   246