RtspFileAu.hxx
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上传日期:2013-07-25
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- #ifndef RtspFileAu_HXX
- #define RtspFileAu_HXX
- /* ====================================================================
- * The Vovida Software License, Version 1.0
- *
- * Copyright (c) 2000 Vovida Networks, Inc. All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- *
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in
- * the documentation and/or other materials provided with the
- * distribution.
- *
- * 3. The names "VOCAL", "Vovida Open Communication Application Library",
- * and "Vovida Open Communication Application Library (VOCAL)" must
- * not be used to endorse or promote products derived from this
- * software without prior written permission. For written
- * permission, please contact vocal@vovida.org.
- *
- * 4. Products derived from this software may not be called "VOCAL", nor
- * may "VOCAL" appear in their name, without prior written
- * permission of Vovida Networks, Inc.
- *
- * THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESSED OR IMPLIED
- * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
- * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, TITLE AND
- * NON-INFRINGEMENT ARE DISCLAIMED. IN NO EVENT SHALL VOVIDA
- * NETWORKS, INC. OR ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT DAMAGES
- * IN EXCESS OF 281421,000, NOR FOR ANY INDIRECT, INCIDENTAL, SPECIAL,
- * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
- * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
- * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
- * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
- * USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
- * DAMAGE.
- *
- * ====================================================================
- *
- * This software consists of voluntary contributions made by Vovida
- * Networks, Inc. and many individuals on behalf of Vovida Networks,
- * Inc. For more information on Vovida Networks, Inc., please see
- * <http://www.vovida.org/>.
- *
- */
- static const char* const RtspFileAu_hxx_version =
- "$Id: RtspFileAu.hxx,v 1.9 2001/05/15 20:26:08 bko Exp $";
- #include "RtspFile.hxx"
- #include <sndfile.h>
- /** Child class for *.au file type.
- Uses libsndfile to read au header and audio data.
- */
- class RtspFileAu : public RtspFile
- {
- public:
- /** constructor
- @param shortFilename rtsp based filename of audio file
- */
- RtspFileAu( const string& shortFilename );
- /** deconstructor */
- virtual ~RtspFileAu();
- /** see parent class for more info, rtspSdp isn't used here */
- virtual bool saveHeader( const int ftIndex, RtspSdp& rtspSdp );
- /** see parent class for more info */
- virtual bool loadHeader( int* ftIndex, int* lengthInMs );
- /** see parent class for more info */
- virtual bool open( bool bReadWrite, int ftIndex );
- /** see parent class for more info */
- virtual bool close();
- /** see parent class for more info, pSeqNum and pTS not used */
- virtual int read( void* data, int max,
- unsigned short* pSeqNum = 0, unsigned int* pTS = 0 );
-
- /** see parent class for more info, pSeqNum and pTS not used */
- virtual int write( void* data, int max,
- unsigned short uSeqNum = 0, unsigned int uTS = 0 );
- /** see parent class for more info */
- virtual long seek( const long samples, const int whence );
-
- /** see parent class for more info */
- virtual string fileExtensionString() const
- { return ".au"; }
- private:
- /** Print sf info block. Used for debugging */
- void printSfInfo() const;
- /** Write dummy data to audio file. Used to work around libsndfile
- limitaiton - can't reopen an empty file. */
- void dummyWrite( SNDFILE* xAudioFile, const int dummyLen );
- private:
- /** libsndfile file pointer handler */
- SNDFILE* m_xAudioFile;
- /** copy of libsndfile formated audio header */
- SF_INFO mySfInfo;
- };
- /* Local Variables: */
- /* c-file-style: "stroustrup" */
- /* indent-tabs-mode: nil */
- /* c-file-offsets: ((access-label . -) (inclass . ++)) */
- /* c-basic-offset: 4 */
- /* End: */
- #endif