mpeg man page on Inferno

Man page or keyword search:  
man Server   579 pages
apropos Keyword Search (all sections)
Output format
Inferno logo
[printable version]

MPEG(3)								       MPEG(3)

NAME
       mpeg - Boffin mpeg decoder

SYNOPSIS
       bind -b #E /dev

       /dev/mpeg
       /dev/mpegctl

DESCRIPTION
       The  mpeg  device  serves  two  files  giving access to a Boffin MPEG-1
       decoder.

       The control file mpegctl when read returns lines	 of  text  giving  the
       device's	 properties.   Each  line  starts video or audio followed by a
       list of capabilities.  The current device returns a fixed set:

	      video mpeg1,sif
	      audio musicam,I musicam,II

       The control file accepts the following commands:

       init   Reinitialise the device's video and audio subsystems; cancel the
	      effect of stop or pause

       stop   Stop the display immediately.

       pause  Suspend display.

       video iso11172 mpeg1,sif
	      Set the output video mode and formats; only this precise setting
	      is valid.

       audio format rate
	      There are two choices for format: musicam,I  (MPEG  audio	 layer
	      1),  with	 rate  from  64000  to 448000 Hz, and musicam,II (MPEG
	      audio layer 2) with rate from 48000 to 384000.

       window minx miny maxx maxy
	      Sets the overlay window on the screen,  in  screen  coordinates.
	      If  the window size exceeds 320x240, the image is scaled accord‐
	      ingly, separately in each dimension.

       The data file mpeg is an exclusive-use device.	Once  the  device  has
       been  initialised  and  an  output window set using the init and window
       commands to the control file, and an audio format selected by the audio
       command,	 MPEG  data  can  be  written in the agreed format to the mpeg
       file, for display in the output window.	The driver  buffers  the  data
       written	and  implements flow control between application and the hard‐
       ware.  When closed, the device waits for the last block of data to dis‐
       play before returning to the application.

SOURCE
       /os/pc/devmpeg.c

CONFIGURATION
       mpeg0=port=0x1e0 irq=15 dma=6

SEE ALSO
       mpeg(2), stream in sys-read(2)

DIAGNOSTICS
       An error results on a write to the device once stopped.

								       MPEG(3)
[top]

List of man pages available for Inferno

Copyright (c) for man pages and the logo by the respective OS vendor.

For those who want to learn more, the polarhome community provides shell access and support.

[legal] [privacy] [GNU] [policy] [cookies] [netiquette] [sponsors] [FAQ]
Tweet
Polarhome, production since 1999.
Member of Polarhome portal.
Based on Fawad Halim's script.
....................................................................
Vote for polarhome
Free Shell Accounts :: the biggest list on the net