--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/dvrengine/CommonRecordingEngine/inc/MCRPacketSource.h Wed Sep 01 12:20:37 2010 +0100
@@ -0,0 +1,190 @@
+/*
+* Copyright (c) 2007 Nokia Corporation and/or its subsidiary(-ies).
+* All rights reserved.
+* This component and the accompanying materials are made available
+* under the terms of the License "Eclipse Public License v1.0"
+* which accompanies this distribution, and is available
+* at the URL "http://www.eclipse.org/legal/epl-v10.html".
+*
+* Initial Contributors:
+* Nokia Corporation - initial contribution.
+*
+* Contributors:
+*
+* Description: Class for all rtp packet sources*
+*/
+
+
+
+#ifndef MCRPACKRTSOURCE_H
+#define MCRPACKRTSOURCE_H
+
+// INCLUDES
+#include <e32def.h>
+#include <e32cmn.h>
+
+// CONSTANTS
+const TReal KRealZero( 0.0 );
+const TReal KRealMinusOne( -1.0 );
+
+// MACROS
+// None
+
+// DATA TYPES
+// None
+
+// FORWARD DECLARATIONS
+class CCRPacketBuffer;
+
+// CLASS DECLARATION
+
+/**
+* Interface for packet sources
+*
+* @lib CommonRecordingEngine.lib
+* @since Series 60 3.0
+*/
+class MCRPacketSource
+ {
+
+public: // Data types
+
+ /**
+ * Enum for indicating what stream an individual rtp packet belongs to.
+ */
+ enum TCRPacketStreamId
+ {
+ EAudioStream = 0, /**< This rtp stream carries audio content data */
+ EAudioControlStream = 1, /**< This rtp stream carries audio control data */
+ EVideoStream = 2, /**< This rtp stream carries video content data */
+ EVideoControlStream = 3, /**< This rtp stream carries video control data */
+ ESubTitleStream = 4, /**< This rtp stream carries sub title content data */
+ ESubTitleControlStream = 5, /**< This rtp stream carries sub title control data */
+ EDisContinousStream = 6, /**< This is info of discontinous point in stream */
+ EStreamEndTag = 7, /**< This is info of end point of stream */
+ EStreamIdCount /**< Number of different sources */
+ };
+
+ /**
+ * Enum for indicating rtp packet source state.
+ */
+ enum TCRPacketSourceState
+ {
+ ERtpStateIdle = 0, /**< Nothing started yet */
+ ERtpStateSdpAvailable, /**< SDP received */
+ ERtpStateSeqAndTSAvailable, /**< Should be ready for prime-time */
+ ERtpStateSetupRepply, /**< Setup repply received */
+ ERtpStatePlaying, /**< Stream is playing */
+ ERtpStateClosing, /**< Stream is about to end */
+ ERtpStateCount /**< Count number of different states */
+ };
+
+public: // New methods
+
+ /**
+ * Method for acquiring sdp.
+ * @since Series 60 3.0
+ * @param aSdp is string pointer that will be .Set() to contain
+ * the sdp. If no sdp is available no .Set() will occur.
+ * @return KErrNotReady if no sdp available.
+ */
+ virtual TInt GetSdp( TPtrC8& aSdp ) = 0;
+
+ /**
+ * Method for acquiring (almost) up-to-date sequence and ts numbers.
+ * @since Series 60 3.0
+ * @param aAudioSeq is reference to TUint that will be set by this
+ * method to contain latest available sequence number for
+ * audio stream being received via this packet source.
+ * @param aAudioTS rtp timestamp for audio
+ * @param aVideoSeq rtp seq for video. If no video,
+ value will not be touched.
+ * @param aVideoTS rtp ts for video.
+ * @return KErrNone if data available.
+ */
+ virtual TInt SeqAndTS( TUint& aAudioSeq,
+ TUint& aAudioTS,
+ TUint& aVideoSeq,
+ TUint& aVideoTS ) = 0;
+
+ /**
+ * Method for ordering "play" for packet source.
+ * @since Series 60 3.0
+ * @param aStartPos is start position in sends.
+ * @param aEndPos is play end position in seconds.
+ * @return a system wide error code.
+ */
+ virtual TInt Play( const TReal& aStartPos,
+ const TReal& aEndPos ) = 0;
+
+ /**
+ * Method for ordering "pause" for packet source.
+ * @since Series 60 3.0
+ * @param none.
+ * @return a system wide error code.
+ */
+ virtual TInt Pause() = 0;
+
+ /**
+ * Method for stopping play from source.
+ * @since Series 60 3.0
+ * @param none.
+ * @return a system wide error code.
+ */
+ virtual TInt Stop() = 0;
+
+ /**
+ * Method for getting range of stream. If no range/duration
+ * is available this method will set the return values to
+ * 0.0,-1.0 and that may be quite normal state live streams.
+ * Also, depending on type of source this data may not be always
+ * available, for instance rtsp sources know the range after
+ * play command has been issued but not before.
+ * @since Series 60 3.0
+ * @param aLower is where to start from. If no value available,
+ * value of aLower must be set to 0
+ * @param aUpper is where to stop. Negative values mean eternity.
+ * @return none
+ */
+ virtual void GetRange( TReal& aLower,
+ TReal& aUpper ) = 0;
+
+ /**
+ * Post action after source initialized.
+ * @since Series 60 3.0
+ * @param none.
+ * @return none.
+ */
+ virtual void PostActionL() = 0;
+
+ /**
+ * Method for requesting more packets to buffer.
+ * @since Series 60 3.0
+ * @param none.
+ * @return none.
+ */
+ virtual void Restore() = 0;
+
+ /**
+ * Setter for current position.
+ * @since Series 60 3.0
+ * @param aPosition a postion of playback.
+ * @return a system wide error code.
+ */
+ virtual TInt SetPosition( const TInt64 aPosition ) = 0;
+
+ /**
+ * Getter for current position.
+ * @since Series 60 3.0
+ * @param aPosition a postion of playback.
+ * @param aDuration a duration of playback.
+ * @return a system wide error code.
+ */
+ virtual TInt GetPosition( TInt64& aPosition,
+ TInt64& aDuration ) = 0;
+
+ };
+
+#endif // MCRPACKRTSOURCE_H
+
+// End of File