maplay
SYNOPSIS
maplay [options] mpegfile
Options:
[-h] [-v] [-s] [-l] [-r] [-c] [-f ushort]
DESCRIPTION
maplay plays MPEG-1 layer I and layer II audio streams
by adding them to the Be's DAC stream. It's a port of
Tobias Bading's maplay for Unices.
OPTIONS
- -h
- Displays short help message
- -v
- Switches on verbose mode. You will get information about the stream, like mode, bitrate,
copyright etc., if you use this option.
- -s
- Switches on stdout mode. This option tells the program to decode the stream to stdout.
The created output contains 16 bit signed PCM samples. If the
stream is in stereo mode, the samples of both channels are
interleaved, the sample for the left channel first.
- -l
- Left channel mode only. maplay decodes (and plays) the left channel of stereo streams
only. This option halves the required CPU time.
- -r
- Right channel mode only. Same as above, but right channel.
- -c
- This option instructs the program to report filter range
violations to stderr. Sometimes PCM values calculated by
the synthesis filter exceede the 16 bit boundary and must
be mapped to these boundaries. If you can hear this, you
may use the next option.
- -f ushort
- maplay uses this scalefactor instead of the default value 32768
for the synthesis filter. You can reduce or eliminate range
violations with this option, but lower scalefactor values
reduce the signal-to-noise ratio, too. I can't remember when
I used this option the last time myself.
AUTHORS
Original Author:
Tobias Bading
bading@cs.tu-berlin.de
Porter to BeOS:
Waleed Kadous
Ideas To Code Software
waleed@cse.unsw.edu.au