audinfo.h
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上传日期:2007-06-06
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- /* ***** BEGIN LICENSE BLOCK *****
- * Version: RCSL 1.0/RPSL 1.0
- *
- * Portions Copyright (c) 1995-2002 RealNetworks, Inc. All Rights Reserved.
- *
- * The contents of this file, and the files included with this file, are
- * subject to the current version of the RealNetworks Public Source License
- * Version 1.0 (the "RPSL") available at
- * http://www.helixcommunity.org/content/rpsl unless you have licensed
- * the file under the RealNetworks Community Source License Version 1.0
- * (the "RCSL") available at http://www.helixcommunity.org/content/rcsl,
- * in which case the RCSL will apply. You may also obtain the license terms
- * directly from RealNetworks. You may not use this file except in
- * compliance with the RPSL or, if you have a valid RCSL with RealNetworks
- * applicable to this file, the RCSL. Please see the applicable RPSL or
- * RCSL for the rights, obligations and limitations governing use of the
- * contents of the file.
- *
- * This file is part of the Helix DNA Technology. RealNetworks is the
- * developer of the Original Code and owns the copyrights in the portions
- * it created.
- *
- * This file, and the files included with this file, is distributed and made
- * available on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
- * EXPRESS OR IMPLIED, AND REALNETWORKS HEREBY DISCLAIMS ALL SUCH WARRANTIES,
- * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, FITNESS
- * FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
- *
- * Technology Compatibility Kit Test Suite(s) Location:
- * http://www.helixcommunity.org/content/tck
- *
- * Contributor(s):
- *
- * ***** END LICENSE BLOCK ***** */
- #ifndef _AUDINFO_H_
- #define _AUDINFO_H_
- // RTP Stuff
- typedef struct
- {
- UINT8 aHeader[8]; // Payload header
-
- UINT32 ulBytesFree, // Number of bytes available in packet
- ulBytesSent, // Number of bytes sent in packets
- ulFirstPts, // First pts in play sequence (90 hz)
- ulFirstScr, // First scr in play sequence (ms)
- ulFragBytesRem, // Number of bytes needed for full packet
- ulHeaders, // Number of headers in this packet
- ulHeaderSize, // Number of bytes in the payload header
- ulPendingReq, // Number of packet requests pending
- ulDataChunks; // Number of rtp data seqments in this packet
- #ifdef SKIP_TEST
- UINT32 ulPicSkip;
- #endif
- double dScr, // Time for packet delivery
- dPts, // Time for packet presentation
- dPtsDelta; // Delta of file ts and stream ts
- BOOL bDiscontinuity, // Set marker bit to 1
- bPacketReady, // Is this packet ready for the wire
- bPacketFrag, // Fragmentation on this packet
- bServiceReq; // Send packets for old requests
- INT16 wFragBytes; // Number of bytes in frag packet
- } tRtpPacket;
- enum {RTP_PACKET_SIZE=1450};
- class CAudioInfoBase
- {
- public:
- CAudioInfoBase();
- virtual ~CAudioInfoBase();
-
- virtual BOOL Init(UINT8 *pHeader,
- UINT32 ulSize) = 0;
- virtual BOOL GetEncodeInfo(UINT8 *pHeader,
- UINT32 dwSize,
- UINT32 &ulBitRate,
- UINT32 &ulSampRate,
- int &nChannels,
- int &nLayer,
- int &nSamplesPerFrame) = 0;
- virtual int CheckValidFrame(UINT8 *pBuf,
- UINT32 dwSize) = 0;
- virtual INT32 ScanForSyncWord(UINT8 *pBuf,
- INT32 lSize,
- int &nFrameSize) = 0;
- virtual BOOL IsInited();
- virtual INT16 GetSyncWord();
- UINT32 GetAudioRtpPacket(UINT8 *pRead,
- UINT32 ulRead,
- tRtpPacket *pRtp);
- protected:
- UINT8 m_ySyncWord; // Last byte of the sync word
- BOOL m_bIsInited; // Has Init_c been called
- };
- #endif