PM123's Recording Plug-in (OS2REC)

OS2REC supports playing of audio data just recorded from line-in. You say it makes no sense? It makes sense! E.g. if you want to use the Equalizer Plug-In with an external audio source.

Usage

To start the recording right click PM123, choose Load..., Record... and follow the dialog. Alternatively choose Load..., URL... and enter an URL of the following style:

record:///[sounddevice][?param1=value1[&param2=value2[&...]]]

sounddevice is either a device ID (integer number) or a name of a mixer device usually AMPMIXxx. The Device ID 0 is the default MMOS2 sound device.
The parameters below may be used to control the recording parameters.

Parameter	Value	Default	Remarks
samp[lerate]	Sampling rate in kHz	44100
ch[annels]	Number of channels (usually 1 or 2)	2
mono	- none -		Alias for channels=1
stereo	- none -		Alias for channels=2
share[d]	y[es]|n[o], default: yes	yes	Using the non-shared mode will also block other mixers from working.
in[put]	l[ine]|m[ic]|d[igital]	line

Examples

record:///

Start recording from the default sound device with default parameters: 44,1kHz, stereo, use line in

record:///ampmix01

Start recording from the specified sound device

record:///0?samplerate=48000&mono

Start recording from the default sound device with 48kHz sample rate and only 1 channel

record:///0?input=mic

Start recording from the default microphone input.

Known issues

• The plug-in should introduce a defined latency before passing the buffers to the output.
  Since the playback is normally absolutely synchronous you may never get the buffers filled. So drops in the sound are very likely to happen at the beginning.
• When the recording and the playback is not done on same physical sound device it may get out of sync with time because the two sound devices do not use exactly the same sampling rate. This will cause dropouts or jumps whichever is the faster device. Most likely this will never get fixed.