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DESCRIPTION

If no command is given, then cdplay enters interactive mode, reading commands from the standard input.

The following options are available:

-a audio device

Specify the audio device to use. Used only in digital transfer mode. If not specified, the environment variables AUDIODEV and SPEAKER will be tried (in this order) to find the device; as a last resort, /dev/sound will be used. If the “-a” command line option is used, or the CDPLAY_DIGITAL environment variable is present, digital transfer mode is switched on automatically.

-f device

Specify the control device to use. Both absolute paths and paths relative to /dev are accepted. The suffix ‘c’ (or ‘d’ on some architectures, see disklabel(8) for details) is added to the device name if needed. If the device not specified, the environment variables MUSIC_CD, CD_DRIVE, DISC and CDPLAY will be tried (in this order) to find the device.

The available commands are listed below. Only as many characters as are required to uniquely identify a command need be specified. The word play can be omitted in all cases.

play [first_track [last_track]]

Play from track first_track to track last_track. The first track has number 1.

play [start_m:start_s.start_f [end_m:end_s.end_f]]

Play from the absolute address (MSF) defined by start_m in minutes, start_s, in seconds and start_f (frame number) to the absolute address defined by end_m in minutes, end_s, in seconds and end_f (frame number). Minutes are in the range 0-99. Seconds are in the range 0-59. Frame numbers are in the range 0-74.

play [#start_block [length]]

Play starting from the logical block start_block using length logical blocks.

next

Skip to the next track.

prev

Skip to the previous track.

pause

Stop playing. Do not stop the disc.

resume

Resume playing. Used after the pause command.

shuffle

Select shuffle play. Only valid in interactive mode.

single [track]

Pick a single track and play it repeatedly. If a track argument is not given the single command will shut shuffle mode off and play the disc normally. Only valid in interactive mode.

skip

Skip to another track. Only valid when shuffle play is selected.

stop

Stop the disc.

eject

Eject the disc.

close

Inject the disc.

volume left_channel right_channel

Set the volume of left channel to left_channel and the volume of right channel to right_channel. Allowed values are in the range 0-255.

volume value

Set the volume of both left channel right channel to value. Allowed values are in the range 0-255.

volume mute

Turn the sound off.

volume mono

Set the mono mode.

volume stereo

Set the stereo mode.

volume left

Play the left subtrack on both left and right channels.

volume right

Play the right subtrack on both left and right channels.

info

Print the table of contents.

status

Display the current audio, media and volume status.

digital n

Turn on digital transfer mode. In this mode, cdplay reads digital data from disc and sends it to an audio device. A SCSI or ATAPI CD-ROM is required; and the audio device must support CD audio format (44100 Hz sampling rate, 16-bit stereo samples). Audio data are read and written in groups of n frames (5 by default, or 1/15 seconds).

analog

Switch from digital back to analog mode.

help

Print the list of available commands.

reset

Perform the hardware reset of the device.

set msf

Set minute-second-frame ioctl mode (default).

set lba

Set LBA ioctl mode.

quit

Quit the program.