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1995-03-26
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How to Modify the Intel Setup program
Intel provides the Indeo(TM) video drivers with a Setup utility that
automatically installs the drivers along with Microsoft's Video for
Windows(TM)* runtime files. The Intel Setup utility can be freely
distributed with any application that uses Indeo video and the VfW
runtimes. The Setup utility may be distributed as is. It is also
possible to modify the Setup before it is distributed. This article
first gives an overview of how the Setup utility works and then shows
how to modify it.
The Intel Setup utility is already a modified version of the Setup
utility provided by Microsoft. The Microsoft Setup utility installs
the Video for Windows (VfW) runtime files. The Intel Setup utility
also installs the VfW runtime files, but includes all of the latest
Indeo video drivers. With these additional drivers, the Intel Setup
files do not all fit on one 3.5" diskette. It is possible to delete
one or more files from Setup in order to bring the total size down to
one diskette again. It is also possible to add more files to be
installed by Setup.
Background on Microsoft's Setup:
--------------------------------
By studying the contents of some of the text files used by Setup, it is
possible to figure out how most of Setup works. There are only a
couple files that ever need to be modified. Here is a list of the more
important files:
setup.exe - This file bootstraps the installation process.
setup.lst - A text file containing startup parameters. It is usually
not modified.
setup.mst - A text file containing Basic language script that is
executed during installation. This file can be modified.
setup.inf - A text file containing the list of files to be installed.
This file is the one that is most often modified.
mscuistf.dll - A binary file that contains Setup dialog boxes. It is
possible to modify this file to create a Setup with
custom dialog boxes.
The setup.exe file starts up execution. A temporary directory is
created right away on the hard disk. Files that Setup uses during the
installation process are copied into the temporary directory. Setup
gets the name of the temporary directory (~msstfqf.t) and the names of
the temporary files from the text file setup.lst. Most of the
temporary files are compressed. The compressed files usually have a
filename that ends with an underscore (_). Setup uncompresses these
files while copying them into the temporary directory.
The following is an example of what Microsoft's setup.lst looks like:
********************** Microsoft setup.lst ************************
[Params]
WndTitle = Video for Windows 1.1 Runtime
WndMess = Initializing Setup...
TmpDirSize = 500
TmpDirName = ~msstfqf.t
CmdLine = _mstest setup.mst /C "/S %s %s"
DrvModName = DSHELL
[Files]
setup.mst = setup.mst
setup.in_ = setup.inf
setupapi.in_ = setupapi.inc
msdetect.in_ = msdetect.inc
mscpydis.in_ = mscpydis.inc
mscpydis.dl_ = mscpydis.dll
mscomstf.dl_ = mscomstf.dll
msinsstf.dl_ = msinsstf.dll
msuilstf.dl_ = msuilstf.dll
msshlstf.dl_ = msshlstf.dll
mscuistf.dl_ = mscuistf.dll
msdetstf.dl_ = msdetstf.dll
iniupd.dl_ = iniupd.dll
_mstest.ex_ = _mstest.exe
_mssetup.ex_ = _mssetup.exe
profdisp.ex_ = profdisp.exe
The [Files] section lists all of the files Setup copies into the
temporary directory. The source filenames are on the left and the
destination names are on the right. If the source file is compressed,
Setup automatically decompresses it while it is being copied into the
temporary directory.
One file to note in this list is setup.inf. Setup.inf is a text file
containing a list of all the files that are permanently installed by
Setup. This is a file that often needs to be edited for a new
installation. Microsoft typically provides this file in compressed
format as setup.in_. As a result, the uncompressed setup.inf file only
exists for a short time in the temporary directory while the Setup
program is running. To save a permanent copy of setup.inf (or any of
the temporary files), task switch over to Windows' File Manager just
after Setup displays its Welcome dialog box. Under File Manager, find
the temporary directory and copy setup.inf to a permanent directory for
later use.
Since setup.inf is an important file, and not very big, Intel Setup does
not compress the setup.in_ file. Setup.inf always exists in
uncompressed format. This makes the Intel Setup program easier to
modify. The Intel setup.lst file uses this line instead in setup.inf:
setup.inf = setup.inf
Once the temporary directory is ready, the Basic script in setup.mst is
executed. Looking inside setup.mst shows the following steps are taken:
1. Verify Setup is running on the correct version of Windows.
2. Put up the Welcome dialog box.
3. Get the filenames listed in setup.inf.
4. Install the files listed in setup.inf.
5. Put text entries in system.ini, win.ini, and control.ini files.
6. Put Media Player icon in Accessories group.
7. Profile the display.
8. Restart Windows.
The temporary directory is automatically deleted when Setup is done.
Setup.inf:
----------
Setup.inf contains the names of the files to be installed. The line
for the current Indeo video R3.2 driver looks as follows:
1, ir32.dll,,,, 1994-10-26,,, OLDER, !READONLY,,,,, SHARED, 151056,,
,, 3.22.1.44,
This line has entries separated by commas for such things as diskette
number, filename, date, size, and version number. In this case, Setup
gets the file from diskette #1 (1), gets the name of the file to be
copied and expanded (ir32.dll), assigns it a date (1994-10-26), only
copies it over files with the same name that are older (OLDER), and
does not make it a read-only file (!READONLY). It is treated as a
shared file (SHARED) meaning it may already be in use by the system.
Finally, it verifies the file size (151056) and version number
(3.22.1.44).
Any of these entries can be modified or deleted as part of a new
installation routine. The commas used in each line are critical,
spaces are not.
Setup.mst:
----------
Setup.mst contains the Basic language script that is executed by Setup
during installation. Most of this code never changes except for a
subroutine called "Install" near the end of the file. Here are four
lines of code taken from the Install subroutine:
CreateIniKeyValue WinDir$ + "system.ini", "Drivers", "VIDC.IV32",
"ir32.dll", cmoOverwrite
Run ("regedit.exe /s " + MakePath(WinDir$, "mplayer.reg"))
CreateProgmanItem "Accessories", "Media Player", MakePath(WinDir$,
"mplayer.exe"), "", cmoOverwrite
Run ("profdisp.exe")
CreateIniKeyValue is a call to a routine that places text entries in
the system.ini and control.ini files. This particular call looks in
the Windows directory (Windir$) for the system.ini file and puts this
entry in the [Drivers] section:
VIDC.IV32=ir32.dll
This call overwrites any previous VIDC.IV32 entries.
The second line taken from Setup.mst runs the Windows Regedit utility
using data stored in a file called mplayer.reg. The third line puts
the Media Player icon in the Windows Accessories group. The last line
runs a program called profdisp.exe. Profdisp profiles the display and
places the results in the [drawdib] section of the win.ini file.
Profdisp is one of the temporary files copied by Setup into the
temporary directory. Profdisp is deleted when Setup is done.
Even if you are not familiar with Basic programming, it is still
possible to figure out what most of setup.mst does. The code that
usually needs modification is that which calls the CreateIniKeyValue
function. If an installation fails for unknown reasons, lines of
code in Setup.mst can be commented out by placing two apostrophes
('') at the beginning of a line.
Mscuistf.dll:
-------------
Mscuistf.dll contains the dialog boxes, such as the Welcome box, that
are used by Setup during installation. Mscuistf.dll is expanded and
copied into the temporary directory during startup. It is possible to
modify these dialog boxes directly within the .dll file using utilities
such as App Studio to customized the Setup routine. App Studio comes
with Microsoft Visual C++.
Modifying Intel Setup:
----------------------
The current Intel Setup routine installs these codecs:
Filename Description System.ini entries
-------- ----------- ------------------
ir32.dll Indeo(TM) video R3.2 VIDC.IV31=ir32.dll
VIDC.IV32=ir32.dll
ir21.dll Indeo(TM) video R2.1 VIDC.RT21=ir21.dll
iyvu9.dll Indeo(TM) video Raw VIDC.YVU9=iyvu9.dll
iccvid.drv Cinepak VIDC.CVID=iccvid.drv
msvidc.drv MS Video 1 VIDC.MSVC=msvidc.drv
msrle.drv MS RLE VIDC.MRLE=MSRLE.drv
Any one of these files can be removed, if they are not needed, to
reduce the size of the Setup routine. However, Video for Windows users
typically assume a certain level of functionality after installing the
VfW runtimes. Delete files at your own risk.
The following steps show how to change Intel Setup so it no longer
installs the RT21 Indeo video driver.
1. Delete the following line from the [AVICodecs] section of setup.inf:
1, ir21.dll,,,, 1993-11-19,,, OLDER, !READONLY,,,,, SHARED, 77664,,
,, 2.17.0.3,
2. Delete the following line from the Install subroutine of setup.mst:
CreateIniKeyValue WinDir$ + "system.ini", "Drivers", "VIDC.RT21",
"ir21.dll", cmoOverwrite
3. Delete the compressed ir21.dl_ file.
4. The setup routine is ready to go.
Microsoft Setup SDK:
--------------------
It is more difficult adding a file to be installed by Setup than
deleting one. Microsoft's Setup SDK is usually needed to add a file.
The Setup SDK provides Compress and Layout utilities along with some
source code files. Microsoft used to supply the Setup SDK with V3.1 of
the Windows SDK. The Setup Toolkit can now be obtained from Microsoft's
Download Service (MSDL) at 206-936-6735. Look for a file called
CP0982.EXE in the C/C++ section. A Setup tutorial is also available on
MSDL. The tutorial is located in the WINSDK section in a file called
SETTLKIT.EXE.