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added interface for variable bitrate encoding

This commit is contained in:
darkeye 2002-03-28 16:39:32 +00:00
parent f96c7969eb
commit c326ebfac1
1 changed files with 109 additions and 7 deletions
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116
darkice/trunk/src/AudioEncoder.h
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@ -80,10 +80,15 @@ class AudioEncoder : public Sink, public virtual Referable
bool inBigEndian;
/**
* Bit rate of the output. (bits/sec)
* Bit rate of the output in kbits/sec, for fixed bitrate encodings.
*/
unsigned int outBitrate;
/**
* Quality of the output, for variable bitrate encodings.
*/
double outQuality;
/**
* Sample rate of the output.
*/
@ -112,6 +117,7 @@ class AudioEncoder : public Sink, public virtual Referable
unsigned int inChannel,
bool inBigEndian,
unsigned int outBitrate,
float outQuality,
unsigned int outSampleRate,
unsigned int outChannel ) throw ( Exception )
{
@ -120,6 +126,7 @@ class AudioEncoder : public Sink, public virtual Referable
this->inChannel = inChannel;
this->inBigEndian = inBigEndian;
this->outBitrate = outBitrate;
this->outQuality = outQuality;
this->outSampleRate = outSampleRate;
this->outChannel = outChannel;
}
@ -149,13 +156,13 @@ class AudioEncoder : public Sink, public virtual Referable
}
/**
* Constructor.
* Constructor for fixed bitrate encoding.
*
* @param inSampleRate sample rate of the input.
* @param inBitsPerSample number of bits per sample of the input.
* @param inChannel number of channels of the input.
* @param inBigEndian shows if the input is big or little endian
* @param outBitrate bit rate of the output (bits/sec).
* @param outBitrate bit rate of the output (kbits/sec).
* @param outSampleRate sample rate of the output.
* If 0, inSampleRate is used.
* @param outChannel number of channels of the output.
@ -166,7 +173,7 @@ class AudioEncoder : public Sink, public virtual Referable
AudioEncoder ( unsigned int inSampleRate,
unsigned int inBitsPerSample,
unsigned int inChannel,
bool inBigEndian,
bool inBigEndian,
unsigned int outBitrate,
unsigned int outSampleRate = 0,
unsigned int outChannel = 0 )
@ -177,16 +184,51 @@ class AudioEncoder : public Sink, public virtual Referable
inChannel,
inBigEndian,
outBitrate,
0.0,
outSampleRate ? outSampleRate : inSampleRate,
outChannel ? outChannel : inChannel );
}
/**
* Constructor.
* Constructor for variable bitrate encoding.
*
* @param inSampleRate sample rate of the input.
* @param inBitsPerSample number of bits per sample of the input.
* @param inChannel number of channels of the input.
* @param inBigEndian shows if the input is big or little endian
* @param outQuality the quality of the stream.
* @param outSampleRate sample rate of the output.
* If 0, inSampleRate is used.
* @param outChannel number of channels of the output.
* If 0, inChannel is used.
* @exception Exception
*/
inline
AudioEncoder ( unsigned int inSampleRate,
unsigned int inBitsPerSample,
unsigned int inChannel,
bool inBigEndian,
double outQuality,
unsigned int outSampleRate = 0,
unsigned int outChannel = 0 )
throw ( Exception )
{
init ( inSampleRate,
inBitsPerSample,
inChannel,
inBigEndian,
0,
outQuality,
outSampleRate ? outSampleRate : inSampleRate,
outChannel ? outChannel : inChannel );
}
/**
* Constructor for fixed bitrate encoding.
*
* @param as get input sample rate, bits per sample and channels
* from this AudioSource.
* @param outBitrate bit rate of the output (bits/sec).
* @param outBitrate bit rate of the output (kbits/sec).
* @param outSampleRate sample rate of the output.
* If 0, input sample rate is used.
* @param outChannel number of channels of the output.
@ -205,6 +247,36 @@ class AudioEncoder : public Sink, public virtual Referable
as->getChannel(),
as->isBigEndian(),
outBitrate,
0.0,
outSampleRate ? outSampleRate : as->getSampleRate(),
outChannel ? outChannel : as->getChannel() );
}
/**
* Constructor for variable bitrate encoding.
*
* @param as get input sample rate, bits per sample and channels
* from this AudioSource.
* @param outQuality the quality of the stream.
* @param outSampleRate sample rate of the output.
* If 0, input sample rate is used.
* @param outChannel number of channels of the output.
* If 0, input channel is used.
* @exception Exception
*/
inline
AudioEncoder ( const AudioSource * as,
double outQuality,
unsigned int outSampleRate = 0,
unsigned int outChannel = 0 )
throw ( Exception)
{
init( as->getSampleRate(),
as->getBitsPerSample(),
as->getChannel(),
as->isBigEndian(),
0,
outQuality,
outSampleRate ? outSampleRate : as->getSampleRate(),
outChannel ? outChannel : as->getChannel() );
}
@ -222,6 +294,7 @@ class AudioEncoder : public Sink, public virtual Referable
encoder.inChannel,
encoder.inBigEndian,
encoder.outBitrate,
encoder.outQuality,
encoder.outSampleRate,
encoder.outChannel );
}
@ -244,6 +317,7 @@ class AudioEncoder : public Sink, public virtual Referable
encoder.inChannel,
encoder.inBigEndian,
encoder.outBitrate,
encoder.outQuality,
encoder.outSampleRate,
encoder.outChannel );
}
@ -332,7 +406,8 @@ class AudioEncoder : public Sink, public virtual Referable
}
/**
* Get the bit rate of the output. (bits/sec)
* Get the bit rate of the output in kbits/sec, for fixed bitrate
* encodings.
*
* @return the bit rate of the output.
*/
@ -342,6 +417,30 @@ class AudioEncoder : public Sink, public virtual Referable
return outBitrate;
}
/**
* Get the encoding quality of the output, for variable bitrate
* encodings.
*
* @return the encoding quality of the output.
*/
inline double
getOutQuality ( void ) const throw ()
{
return outQuality;
}
/**
* Tell if this encoding is fixed bitrate or variable bitrate.
*
* @return <code>true</code> if this encoding is variable bitrate,
* <code>false</code> if fixed bitrate.
*/
inline bool
isVBR ( void ) const throw ()
{
return outBitrate == 0;
}
/**
* Check wether encoding is in progress.
*
@ -385,6 +484,9 @@ class AudioEncoder : public Sink, public virtual Referable
$Source$
$Log$
Revision 1.6 2002/03/28 16:39:32 darkeye
added interface for variable bitrate encoding
Revision 1.5 2002/02/19 15:23:59 darkeye
fixed typo