author | Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> |
Thu, 07 Jan 2010 13:25:49 +0200 | |
changeset 1 | 17b6bb2b14ba |
parent 0 | 822a42b6c3f1 |
permissions | -rw-r--r-- |
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/* |
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* Copyright (c) 2007 Nokia Corporation and/or its subsidiary(-ies). |
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* All rights reserved. |
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* This component and the accompanying materials are made available |
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* under the terms of the License "Eclipse Public License v1.0" |
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* which accompanies this distribution, and is available |
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* at the URL "http://www.eclipse.org/legal/epl-v10.html". |
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* |
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* Initial Contributors: |
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* Nokia Corporation - initial contribution. |
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* |
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* Contributors: |
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* |
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* Description: Class for all rtp packet sources* |
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*/ |
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#ifndef MCRPACKRTSOURCE_H |
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#define MCRPACKRTSOURCE_H |
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// INCLUDES |
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#include <e32def.h> |
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#include <e32cmn.h> |
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// CONSTANTS |
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const TReal KRealZero( 0.0 ); |
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const TReal KRealMinusOne( -1.0 ); |
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|
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// MACROS |
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// None |
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// DATA TYPES |
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// None |
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|
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// FORWARD DECLARATIONS |
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class CCRPacketBuffer; |
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|
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// CLASS DECLARATION |
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|
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/** |
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* Interface for packet sources |
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* |
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* @lib CommonRecordingEngine.lib |
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* @since Series 60 3.0 |
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*/ |
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class MCRPacketSource |
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{ |
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public: // Data types |
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/** |
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* Enum for indicating what stream an individual rtp packet belongs to. |
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*/ |
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enum TCRPacketStreamId |
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{ |
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EAudioStream = 0, /**< This rtp stream carries audio content data */ |
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EAudioControlStream = 1, /**< This rtp stream carries audio control data */ |
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EVideoStream = 2, /**< This rtp stream carries video content data */ |
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EVideoControlStream = 3, /**< This rtp stream carries video control data */ |
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ESubTitleStream = 4, /**< This rtp stream carries sub title content data */ |
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ESubTitleControlStream = 5, /**< This rtp stream carries sub title control data */ |
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EDisContinousStream = 6, /**< This is info of discontinous point in stream */ |
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EStreamEndTag = 7, /**< This is info of end point of stream */ |
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EStreamIdCount /**< Number of different sources */ |
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}; |
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|
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/** |
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* Enum for indicating rtp packet source state. |
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*/ |
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enum TCRPacketSourceState |
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{ |
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ERtpStateIdle = 0, /**< Nothing started yet */ |
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ERtpStateSdpAvailable, /**< SDP received */ |
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ERtpStateSeqAndTSAvailable, /**< Should be ready for prime-time */ |
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ERtpStateSetupRepply, /**< Setup repply received */ |
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ERtpStatePlaying, /**< Stream is playing */ |
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ERtpStateClosing, /**< Stream is about to end */ |
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ERtpStateCount /**< Count number of different states */ |
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}; |
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public: // New methods |
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|
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/** |
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* Method for acquiring sdp. |
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* @since Series 60 3.0 |
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* @param aSdp is string pointer that will be .Set() to contain |
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* the sdp. If no sdp is available no .Set() will occur. |
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* @return KErrNotReady if no sdp available. |
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*/ |
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virtual TInt GetSdp( TPtrC8& aSdp ) = 0; |
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/** |
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* Method for acquiring (almost) up-to-date sequence and ts numbers. |
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* @since Series 60 3.0 |
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* @param aAudioSeq is reference to TUint that will be set by this |
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* method to contain latest available sequence number for |
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* audio stream being received via this packet source. |
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* @param aAudioTS rtp timestamp for audio |
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* @param aVideoSeq rtp seq for video. If no video, |
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value will not be touched. |
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* @param aVideoTS rtp ts for video. |
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* @return KErrNone if data available. |
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*/ |
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virtual TInt SeqAndTS( TUint& aAudioSeq, |
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TUint& aAudioTS, |
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TUint& aVideoSeq, |
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TUint& aVideoTS ) = 0; |
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|
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/** |
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* Method for ordering "play" for packet source. |
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* @since Series 60 3.0 |
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* @param aStartPos is start position in sends. |
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* @param aEndPos is play end position in seconds. |
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* @return a system wide error code. |
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*/ |
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virtual TInt Play( const TReal& aStartPos, |
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const TReal& aEndPos ) = 0; |
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|
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/** |
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* Method for ordering "pause" for packet source. |
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* @since Series 60 3.0 |
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* @param none. |
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* @return a system wide error code. |
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*/ |
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virtual TInt Pause() = 0; |
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|
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/** |
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* Method for stopping play from source. |
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* @since Series 60 3.0 |
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* @param none. |
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* @return a system wide error code. |
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*/ |
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virtual TInt Stop() = 0; |
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|
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/** |
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* Method for getting range of stream. If no range/duration |
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* is available this method will set the return values to |
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* 0.0,-1.0 and that may be quite normal state live streams. |
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* Also, depending on type of source this data may not be always |
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* available, for instance rtsp sources know the range after |
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* play command has been issued but not before. |
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* @since Series 60 3.0 |
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* @param aLower is where to start from. If no value available, |
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* value of aLower must be set to 0 |
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* @param aUpper is where to stop. Negative values mean eternity. |
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* @return none |
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*/ |
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virtual void GetRange( TReal& aLower, |
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TReal& aUpper ) = 0; |
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|
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/** |
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* Post action after source initialized. |
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* @since Series 60 3.0 |
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* @param none. |
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* @return none. |
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*/ |
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virtual void PostActionL() = 0; |
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|
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/** |
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* Method for requesting more packets to buffer. |
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* @since Series 60 3.0 |
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* @param none. |
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* @return none. |
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*/ |
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virtual void Restore() = 0; |
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167 |
|
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/** |
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* Setter for current position. |
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* @since Series 60 3.0 |
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* @param aPosition a postion of playback. |
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* @return a system wide error code. |
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*/ |
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virtual TInt SetPosition( const TInt64 aPosition ) = 0; |
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|
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/** |
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* Getter for current position. |
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* @since Series 60 3.0 |
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* @param aPosition a postion of playback. |
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* @param aDuration a duration of playback. |
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* @return a system wide error code. |
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*/ |
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virtual TInt GetPosition( TInt64& aPosition, |
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TInt64& aDuration ) = 0; |
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|
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}; |
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|
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#endif // MCRPACKRTSOURCE_H |
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|
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// End of File |