maplay1

Usage

Overview

The maplay program decodes layer I, II, and III MPEG audio streams and plays them using a CD-quality audio device. It supports all modes, which are single channel, stereo, joint stereo and dual channel, and all bitrates except free mode.

Options

filename

filename of a MPEG audio stream or - for stdin

-h

short help

-v

verbose mode - Returns information about the stream, like mode, bitrate, and copyright.

-s

stdout mode - Decodes the stream to stdout. The created output contains 16 bit

-l

Decodes (and plays) the left channel of stereo streams only. This option halves the required CPU time.

-r

Same as -l , but decodes the right channel only

-ul

This option is available on machines with the dbri device and sends the audio output to the line out jack.

-amd

Forces maplay to treat /dev/audio as an amd device. Use it if your SPARC clone has an amd device, but maplay doesn't recognize it. This option may also be used on a machine with a dbri device, because the dbri device can also produce u-law output.

-c

Reports filter range violations to stderr. Sometimes PCM values calculated by the synthesis filter exceed the 16 bit boundary and must be mapped to these boundaries.

-f ushort

Use this scalefactor instead of the default value 32768 for the synthesis filter. Range violations can be reduced or eliminated with this option, but lower scalefactor values reduce the signal-to-noise ratio, too.

Debian maintainer

Brian Mays <[email protected]>