/usr/include/liveMedia/AC3AudioStreamFramer.hh is in liblivemedia-dev 2014.01.13-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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This library is free software; you can redistribute it and/or modify it under
the terms of the GNU Lesser General Public License as published by the
Free Software Foundation; either version 2.1 of the License, or (at your
option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
This library is distributed in the hope that it will be useful, but WITHOUT
ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for
more details.
You should have received a copy of the GNU Lesser General Public License
along with this library; if not, write to the Free Software Foundation, Inc.,
51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
**********/
// "liveMedia"
// Copyright (c) 1996-2014 Live Networks, Inc. All rights reserved.
// A filter that breaks up an AC3 audio elementary stream into frames
// C++ header
#ifndef _AC3_AUDIO_STREAM_FRAMER_HH
#define _AC3_AUDIO_STREAM_FRAMER_HH
#ifndef _FRAMED_FILTER_HH
#include "FramedFilter.hh"
#endif
class AC3AudioStreamFramer: public FramedFilter {
public:
static AC3AudioStreamFramer*
createNew(UsageEnvironment& env, FramedSource* inputSource,
unsigned char streamCode = 0);
// If "streamCode" != 0, then we assume that there's a 1-byte code at the beginning of each chunk of data that we read from
// our source. If that code is not the value we want, we discard the chunk of data.
// However, if "streamCode" == 0 (the default), then we don't expect this 1-byte code.
unsigned samplingRate();
void flushInput(); // called if there is a discontinuity (seeking) in the input
private:
AC3AudioStreamFramer(UsageEnvironment& env, FramedSource* inputSource,
unsigned char streamCode);
// called only by createNew()
virtual ~AC3AudioStreamFramer();
static void handleNewData(void* clientData,
unsigned char* ptr, unsigned size,
struct timeval presentationTime);
void handleNewData(unsigned char* ptr, unsigned size);
void parseNextFrame();
private:
// redefined virtual functions:
virtual void doGetNextFrame();
private:
struct timeval currentFramePlayTime() const;
private:
struct timeval fNextFramePresentationTime;
private: // parsing state
class AC3AudioStreamParser* fParser;
unsigned char fOurStreamCode;
friend class AC3AudioStreamParser; // hack
};
#endif
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