/usr/include/liveMedia/WAVAudioFileSource.hh is in liblivemedia-dev 2016.02.09-1.
This file is owned by root:root, with mode 0o644.
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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) 1996-2016 Live Networks, Inc. All rights reserved.
// A WAV audio file source
// NOTE: Samples are returned in little-endian order (the same order in which
// they were stored in the file).
// C++ header
#ifndef _WAV_AUDIO_FILE_SOURCE_HH
#define _WAV_AUDIO_FILE_SOURCE_HH
#ifndef _AUDIO_INPUT_DEVICE_HH
#include "AudioInputDevice.hh"
#endif
typedef enum {
WA_PCM = 0x01,
WA_PCMA = 0x06,
WA_PCMU = 0x07,
WA_IMA_ADPCM = 0x11,
WA_UNKNOWN
} WAV_AUDIO_FORMAT;
class WAVAudioFileSource: public AudioInputDevice {
public:
static WAVAudioFileSource* createNew(UsageEnvironment& env,
char const* fileName);
unsigned numPCMBytes() const;
void setScaleFactor(int scale);
void seekToPCMByte(unsigned byteNumber);
void limitNumBytesToStream(unsigned numBytesToStream);
// if "numBytesToStream" is >0, then we limit the stream to that number of bytes, before treating it as EOF
unsigned char getAudioFormat();
protected:
WAVAudioFileSource(UsageEnvironment& env, FILE* fid);
// called only by createNew()
virtual ~WAVAudioFileSource();
static void fileReadableHandler(WAVAudioFileSource* source, int mask);
void doReadFromFile();
private:
// redefined virtual functions:
virtual void doGetNextFrame();
virtual void doStopGettingFrames();
virtual Boolean setInputPort(int portIndex);
virtual double getAverageLevel() const;
protected:
unsigned fPreferredFrameSize;
private:
FILE* fFid;
double fPlayTimePerSample; // useconds
Boolean fFidIsSeekable;
unsigned fLastPlayTime; // useconds
Boolean fHaveStartedReading;
unsigned fWAVHeaderSize;
unsigned fFileSize;
int fScaleFactor;
Boolean fLimitNumBytesToStream;
unsigned fNumBytesToStream; // used iff "fLimitNumBytesToStream" is True
unsigned char fAudioFormat;
};
#endif
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