Tuner_Program

This is a 'port' of the Allwell's CATV DOS sample code to Linux.
You will have to run it as root. As it calls "iopl' to grant the program raw access to the ports like DOS.
Usage: 'chch <tv_channel>' // chch stands for "ch"ange "ch"annel'

Note this change channel program will really only be useful under Linux if you have initialized the CyberPro, the SAA7113, and have the video input selected on the CyberPro.

There are a two other programs, based on the CATV DOS code, that MUTE and UNMUTE the TV audio. tv_sound_on and tv_sound_off

The tuner directory contains the port of the Catv progam to linux.
The Cyberpro direcotry contains the port of the TVIA sdk to linux.

You need both to acually get Tv input up thru the box.

The tuner, chch, changes channels and initialized the tv audio decoder.
The tvia sdk provides programs to initialize the video decoder and to switch
video inputs.

See the readme files in each directory for more info.

Precompiled binaries, built under a stock RH 7.3 system with 2.4.20 source, are in the install directory.

Program usage:
1. load the cyberpro kernel module
'insmod -f cyber_read.o'

2. init the SAA7113 video decoder
'initdecod 2 1 0'

3. switch video inputs, run these from inside X, note you don't have to have the tvia X module loaded
   -capdemo 0 --> X & Mozilla
   -capdemo 1 --> TV
   -capdemo 2 --> video input 2

Summary:
Capdemo and initdecod are sample programs from the TVIA CyberPro sdk, that have been modified to work under linux. Initdecod initializes the Philips SAA7113 on the STB; without it all you will see is a green screen. The capdemo program uses the capture and overlay capbabilies of the Cyberpro to pipe one of the video inputs to the screen. The kernel module, cyber_read.o, maps the Cyberpro's memory/frambuffers so that it can be accessed and modified by the other programs.

Building:
-- Prereqs: You will need a configured (needs to know its target proc type to setup the right kernel headers) drop of the linux kernel source.

   1. /usr/src/linux must point to the top of the linux kernel source tree, preferably of the same version you are going to run
   2. The kernel tree needs to have its "processor type" configured.
   --> copy the file hos.config to /usr/src/linux/.config
   --> do a "make menuconfig", don't change anything, just exit and save then run "make dep"
   -->Compiling the code: do a "make install"

sales@gctglobal.com