Change History (mash)

mash-5.0b2 Put release date here

[TDH] Wed May 26 15:34:10 PDT 1999

vic stuff: Just one switch, "-camctrl", to make vic use camera controls: e.g.:
vic -camctrl 224.4.4.4/4444
vic now uses the RendezvousManager to find controllable cameras rather than an "ad hoc" ALM
avsw/cam stuff: new msg format to be compatible -w- RendezvousManager format
serial: added serialdevice option
uc: add destroy methods/clean up

[AMS] Fri May 7 16:03:16 PDT 1999

Incorporated interface for automatic and user-requested distributed recording. Changes to pathfinder, archive-system, aries and hm.

[AMS] Wed Apr 7 16:56:46 PDT 1999

Some minor bug fixes on pathfinder

[TDH] Tue Mar 2 21:43:57 PST 1999

added Class RVMsg for use -w- the RendezvousManager; modified other classes to use it.
make vic use the confBusChannel option
added comment line so CoordinationBus will be seen by otcldoc

[YC] Thu Jan 7 17:17:30 PST 1999

Added "Save to postscript" capability to MBv2. Unlike mbv2, this capability does not depend on any modifications to the tkCanvPs.c file in the Tk8.0 distribution. However, it does depend on the output of the "canvas postscript" command to contain certain specific postscript comments for parsing out pieces of the EPS. Look at MBv2TkCanvas::to_postscript (tcl/applications/mbv2/ui-canvas.tcl) for details.

[TDH] Wed Dec 30 09:35:57 PST 1998

Separated tcl/foo/main.tcl and tcl/foo/application-foo.tcl in places where this was done incorrectly (touched a lot of files)
added a `-uniqid' arg to the device servers and rvic
added GWHandler/Device ServiceCreator/Device classes to HM.
Rewrote room-manager, now called a "LocalHostManager". Like a HM, it accepts periodic requests for servent allocation. Additionally, it advertises certain "available" services that are, e.g., machine-specific (i.e., that need to match a set of args to a particular machine, as with serial ports on the device ctrls.)
added SrvAllocUI class, a simple agent that listens for announcements and displays checkbuttons for manually requesting that the service advertised in the announcement be allocated
incorporated the SrvAllocUI into UC
RendezvousManager updated
Added Remote control access to starting/stopping transmition in rvic
added Trace class in tcl/common/tcltrace.tcl, yet another way of logging. Only traces the tcl side of things. Usage is like mtrace, but flags can be added/deleted dynamically.

[TDH] Wed Dec 23 16:25:32 PST 1998

Added dynamic server discovery to `uc', used if a -rendez option is specified. Expects rendezvous msgs of type "will-provide" to define an available service and "obj-mapping" to dynamically map server object names to client objects names. (Defaults are read in from ~/.mash/obj-mappings)
Checked in an XML parser from Australian National University. Uses the ::XML namespace, pulled in with import XMLParser.
Added UIGenerator class. `uc' uses it to dynamically generate client UIs when receiving a "will-provide" msg advertising a server that has no related client object, but that has a WPI=`XML-file-URL' field in the msg. uc will retreive this URL, parse it as an XML "service description" (XML DTD listed in UIGenerator docs), and generate a UI for it when needed.
Moved uc-specific code from RendezvousManager to UniversalUI using an Observer/Observable relationship
Put a lamp in the CoLab and updated the powerswitch client UI to show that it can control it.

[YC] Tue Dec 22 17:56:38 PST 1998

Fixed bugs reported by purify in edittext code
Fixed deferred cmd handling bug
Tcl::result(char *) assumes the string is static; changed all calls to this method that took a stack string as argument to Tcl::resultf()

[YC] Mon Dec 21 19:02:45 PST 1998

More bug fixes in text commands

[YC] Mon Dec 21 17:26:26 PST 1998

Cleaned up the design of the edittext and unedittext mechanisms. There still are some bugs. I'm committing this so I can checkout a copy on a solaris box and run purify on it.

[TDH] Fri Dec 18 16:56:42 PST 1998

Updated Rendezvous,RendezvousManager classes to handle basic local queries on the cached contents of a rendezvous channel
Added rvic, rvic-client rendezvous ---- if you run an rvic on one machine and an rvic-client on another, the client will automatically find the server if they share a rendezvous channel
Added rvic and rvic-client to nsdr
(previous changes not noted earlier: added new features to rvic and rvic-client)

[YC] Thu Dec 17 16:44:01 PST 1998

Changed the -image option to DropDown widgets to a generic -label option
Added an extra style "textimage" to ImageTextButtons
Added mbv2 page list to Collaborator
Added per-source tracking to mbv2 inside collaborator
Added a justify option to mbv2 text mode
Arrow keys work in text mode
You can paste text within a pre-existing text item
You can now edit pre-existing text in place simply by clicking somewhere within that text in "freehand+text" mode

[YC] Tue Dec 15 22:11:58 PST 1998

Incorporated mbv2 into collaborator. a -mbv2 argument launches collaborator on an mbv2 session. Pitfalls include:

You can't have mb and mbv2 in the same collaborator session
mbv2 does not work with mega, so collaborator drops that session on the floor in mega mode
mbv2 doesn't yet work with rover, so there can't be any playback of mbv2 sessions

[YC] Tue Dec 15 20:18:20 PST 1998

Added a member list and an About dialog box to mbv2

[YC] Tue Dec 15 16:23:25 PST 1998

More UI embellishments for MBv2. Pressing the Shift key in any mode temporarily enables the "Pointer" mode where you can select/cut/copy/move/delete objects on the canvas.
Various bug fixes for mbv2

[KW] Mon Dec 14 15:01:42 MST 1998

tcl/cache/cache.tcl:

Updated to latest SRMv2 API.
Added ability to set d1, d2, e1, e2 from the command line. The default values for d1 and d2 are as in [floyd, et al 97]. The default values for e1 and e2 are 2 and 3, respectively.

Removed some old debugging output from common/ztrace.tcl.
Commented out a debugging line in tcl/cache/timer.tcl and tcl/srmv2-cache/timer.tcl. Note that these two files define the same objects and, because of the way that the importTable is compiled, only the latter has any effect. It seems that one of these two files should disappear, but I'm not sure what the latter file is used for so I'm not sure which file should disappear.

[YC] Sun Dec 13 19:10:21 PST 1998

Added an external page list to mbv2.

[YC] Fri Dec 11 16:14:19 PST 1998

Fixed bugs in source's app_info updates and page name updates
Added the ability to follow active sources
Added debugging control (setting the drop probability)

[YC] Thu Dec 10 23:14:02 PST 1998

Added a toplevel menubar to mbv2
Implemented a very preliminary and extremely unoptimized image scaling algorithm that is used when the user switches zoom levels
Added the ability to import text files in addition to image files
Added popup tips to the various objects on the mbv2 window
Changed the tips API to use a TipManager class (ui_tools/ui-tipwidget.tcl)

[YC] Thu Dec 10 16:06:19 PST 1998

Updated the mbv2 code according to the changes in the SRMv2 API
Added support for import of multiple images
Fixed font/text support

[YC] Wed Dec 9 20:48:29 PST 1998

Added support for scaling of objects on mbv2. Scaling of images doesn't work yet
Resizing of the scrollbars depending on current canvas size works now
Added the ability to expand the canvas in any direction
Added insertion of clipboard text on to the mediaboard
Added = UNDO
Fixed bug in update of entry box in DropDown/Text widgets
Allowed for 3 kinds of modal modes for dialog boxes: none, local, global The old code used a boolean value (0=none and 1=local); those still work

[AMS] Wed Dec 9 15:31:15 PST 1998

Added new AS1 service: Aries, a simple recording service
Modified pathfinder to request recording from AS1/Aries, rather than doing it itself

[YC] Tue Dec 8 20:54:50 PST 1998

Changed the srm_adu_info structure to use the ntp64 struct instead of two int fields. I had made a mistake in assuming the two fields in the 64-bit structure were seconds and microseconds. It appears that a NTP timestamp is a 64-bit representation of time in units of (seconds * 2^32)
Added scrolling capabilities to the canvas
Added popup tips for canvas items

[YC] Thu Dec 3 12:25:15 PST 1998

Added new mbv2 module. This is v2 of the MASH mediaboard that is based on libsrm (SRMv2).
Made enhancements/bug-fixes to ui_tools
Added is_multicast to tcl/common/util.tcl as well

[TDH] Wed Dec 2 15:46:36 PST 1998

Fixed rvic `deactivate' bug and problems switching to/from deactivated sources ---- Seems pretty robust now.
many other minor bug fixes and much rewriting in preparation for adding features from the MMCN paper.
retabified to 8-sp.

[YC] Mon Nov 30 14:24:29 PST 1998

Fixed bugs in the AudioController (full/half duplex) code

[KW] Fri Nov 20 15:44:17 MST 1998

Added ZTrace which works just like MTrace except that it buffers output until the user sends a SIGINT; when a SIGINT is caught, the buffer is flushed to stdout before exiting. There are no flags, as in MTrace and you can only use it from the tcl side. To enable, use --enable-ztrace. ZTrace uses MTrace's mechanism for being compiled away when not enabled.
Added a trcWC flag for tracing Web Cache actions.
Changed cache.tcl and control.tcl "puts" lines to use MTrace instead so that they won't show up when not debugging.
Fixed minor bug in mtrace.cc which caused only flags with values 0x1,2,4,8 to be recognized.

[TDH] Fri Nov 20 13:40:47 PST 1998

added camera ctrls to vic

[YC] Thu Nov 19 11:24:07 PST 1998

Fixed bug in vic pointed out by Wei-Tsang. This bug was introduced during the transition to collaborator.
Removed debugging puts from the reset method in RTPAgent
Fixed bug in nsdr's SDP-to-args conversion classes which caused failures when multiple formats were specified in the m field of the SDP announcement.
Convert file extension to lowercase before testing for mimetype in the HTTP server.
Fixed HTML file (tcl/applications/pathfinder/html/record-msg.html) to point to the right inline image.
Updated tcl/cache to reflect the changes in the SRMv2 API

[YC] Tue Nov 17 17:12:47 PST 1998

Fixed bug in Windows vic/collaborator that caused foreground and disabledForeground to be undefined

[YC] Tue Nov 17 09:42:50 PST 1998

Added checks to pathfinder to ensure that it doesn't abort if the client shuts down the HTTP connection before the server's finished writing its response
Added the preferences dialog to pathfinder's dynamically generated pages
Added rudimentary up-to-date timestamp checks to importTable and the HTTP Cache module
Added code to mkImportTable to generate file timestamps in importTable either from the checked out copy or from the CVS repository

[YC] Tue Nov 17 08:51:49 PST 1998

Fixed bugs in CHANGES.html
Added code to AudioAgent so that it doesn't barf on "no audio controller" when it can't gain the audio device the first time it tries to obtain it. The problem was that since it couldn't figure out whether the audio device was Full or Half duplex, it couldn't create the appropriate controller. The code's been fixed to automatically create a half-duplex controller in such a situation, until the AudioAgent is able to grab the audio device; then a new full-duplex controller is created if needed.
XXX: Added a call to Tcl_Preserve on the interpreter object in the initialization code. This should prevent the interpreter from being destroyed when Tcl exits the event loop, and hopefully prevent otcl from dumping core

[KW] Mon Nov 9 14:17:29 MST 1998

Added record/playback support for tcl/cache app.
Added call to usage when -help is called.

[YC] Sat Nov 7 16:37:44 PST 1998

Added support for unicast mode operation to SSAC

[YC] Fri Nov 6 15:56:08 PST 1998

Revamped the PathFinder web interface
Fixed bugs in and updated collaborator interface

[LKW] Wed Nov 4 17:26:27 MST 1998

Minor modification to tcl/cache:

tcl/cache.tcl: in done_fetch, check to see if the data arrived via the srm session while the local node was contacting the origin server before sending out data.
tcl/control.tcl: don't send a WC_RESP_PEND if local node has the data; don't cancel local reply if local node has data to lessen chance of duplicate srm names that might arise when intervals overlap.

[YC] Tue Oct 20 19:21:53 PDT 1998

Fixed bugs with rover slider
Added bookmarks button (bookmarks functionality isn't there yet)
Added play/pause functionality (there is still some bug on the server side)
Fixed bug in UIBook::draw_border
Added check for whether the AudioAgent has been reset or not before enabling the talk button
If there is no fmt field in an AddressBlock it gets set to {} instead of none

[YC] Mon Oct 19 19:12:09 PDT 1998

Added rover support to collaborator. This will break the original rover clients.

[YC] Fri Oct 16 10:34:37 PDT 1998

Created new tool 'collaborator' based on Cindy's mui.

Collaborator has an integrated audio, video and mediaboard user interface
There is a single source list that contains sources from all media
Almost all of the basic vic,vat,mb functionality works
Some of the vic/vat control menu options don't work yet.
collaborator works with both mega and scuba.
There is a much simpler command line operation to run collaborator in mega mode:
collaborator -usemega -unicast club.cs.berkeley.edu -v 224.4.4.4/4444 -a 224.5.6.7/8888 -mb 224.8.8.8/8888
If you do not specify any -v, -a, or -mb arguments to collaborator, it'll start up an audio+video session on default addresses
You can omit out the address specs to any of -v, -a, or -mb. Collaborator will use built-in defaults.

Updated the Application reset mechanism to first check for a reset method that takes extra arguments type and agent (where type is rtp or srm). This allows the Application object to distinguish between the various reset calls for each of the media. If there isn't any reset method that can accept these args, or if the reset method fails, the app falls back to the original Application reset $ab method
Added a UserApplication/Collaborator to nsdr to convert an SDP announcement into Collaborator arguments. This isn't integrated into nsdr yet, but Collaborator uses the same mechanism to parse an SDP message
Changed the bindtag for TipWidget from TipBindings to TipWidgetBindings to avoid conflicts with mb names.
Fixed/enhanced features in PaneManager and UIBook
Added a new widgetclass ScrolledWinMgr: this lets you add subwindows to the widget that can be moved around as in a window manager. This is used by collaborator to implement the VideoContainer
Minor changes to vic code to allow integration of collaborator
Added mechanisms to the command-line parsing functions to check if arguments to a cmdline option are missing, and if so, try falling back to register_boolean_option. This gives us the ability to specify flags of the form -v, as well as -v 224.4.4.4/4444.
Added a check to AddressBlock to see if the third element of an address spec is an integer, then use it as the ttl instead of the fmt
Got rid of audioFormat and videoFormat options from address-block.tcl
Fixed audio and video agents to directly set audioFormat and videoFormat options instead of having them get set implicitly through address-block.tcl

mash-5.0b1 Fri Oct 9 11:47:20 PDT 1998

[YC] Thu Sep 17 09:19:03 PDT 1998

Updated the mgamon user-interface to identify each of the various kinds of agents (hm's, servents, and clients) via different colors.
The names in the list now show the atype and srv_name fields BEFORE the aspec field (instead of the other way round, as it used to be).
When the first agent appears on the monitor, it automatically displays its detailed info in the "details" box.
When you switch between the various lists in the monitor UI, the detail window automatically switches to the first agent entry in that list.

[YC] Tue Sep 8 13:19:49 PDT 1998

Committed the new and updated mediaboard for the PalmPilot: the MASH MediaPad. The pilot executable is in mash-1/tgmb/client/mediapad.prc
Updated the RMX module to use AS1 instead of TACC.
Got rid of old TCP classes, and substituted them with the tcl-only TCP classes.
Added a new module tgmb/gateway/palm-bmp that encapsulates the GIF-to-PalmPilotBitmap convertor
Updated the tcl/tgmb module to use AS1 instead of TACC
Fixed bugs in SRM1.0 and mb. These bugs mean that the RMX and the mb clients may behave weirdly if there is an old mb client in the session.
undid some comments in mash-tclinit.cc that caused smash to not load up the startup tcl code.
got rid of references to ../tcl8.0/library/http2.0/http.tcl from the AS1 code. smash links this file in statically. So the reference is no longer required.
Bug fixes in the configure.in.srm file used by mash and the new standalone srm2.0 module

[SM] Fri Sep 4 23:38:52 PDT 1998

Fixed minor syntax problems in SRMv2
Fixed Windows include problem in udpchan.cc
Updated makefile.vc

[SM] Fri Sep 4 23:38:52 PDT 1998

Fixed Windows rendering performance thanks to the vic patch from Isidor Kouvelas

[YC] Tue Aug 18 15:48:31 PDT 1998

Modified the core network object to use host byte ordering cosistently for port numbers. I think I have fixed all the code, so hopefully no one should see any problems.
Modified the recv API in the Network object to retrieve both addr and port of the remote side (rather than just addr, as was the original case). All C++ code has been updated to use the new API, although I didn't propagate the new API all the way up to Tcl.
The only exception is the AnnounceListenManager class where the port is passed up to the recv_announcement method. This lets you disambiguate between different sources on the same machine.

[YC] Mon Aug 17 23:32:59 PDT 1998

Added a new configure.in.srm file which lets you select between the stand-alone and MASH versions of the SRMv2 library. The default is to use the stand-alone version. You can override that and link in the MASH version by using the -enable-mashsrm flag to configure. You can use the -with-srm=[path] flag to specify location of the SRM library to configure. The default is ../srm2.0 You can disable SRMv2 completely by specifying -without-srm, although if it can't find the library in any of the default places, configure will silently disable it.
Added hooks to mash to invoke the standalone SRM library

[YC] Fri Aug 14 15:07:45 PDT 1998

Updated the AnnounceListenManager and Timer APIs
Modified the HTTP_Server object to not convert the URL in the request to lowercase
Added default value of 0 to the layer parameter to all of the retrieval methods in AddressBlock
Created a web-proxy interface to the SRMv2_Cache
Upgraded mashcast to v2; the new casting director and RemoteController applet reside in tcl/applications/mashcast

You can start mashcast from the command line:
mashcast [-makeproxy] [-mungeurls] [-noremotectrl] \ [-proxyport port] [-remotectrl port]

-makeproxy creates an SRMv2_CacheProxy object in the process space of the mashcast application. If you already have an SRMv2_CacheProxy set up on your machine, you don't need this flag.
Use -proxyport to specify the listen port for the proxy. The default is 3468
Use -mungeurls if you do not wish to set the proxy in your browser. The mashcast application will then munge the URL by prepending the proxy location before sending it to the browser.
Use -noremotectrl if you do not wish to use the Java RemoteController class. This will cause mashcast to use "netscape -remote" instead. Of course, this'll only work on UNIX
Use -remotectrl to specify the port for the RemoteController to connect back to. The default is 3470.
You can specify the remote control port in one of 2 ways to the Java applet - either by using a <param name="applet_port" value=port#> tag, or by appending ?port# to the URL of the HTML page that contains the applet.

[AMS] Wed Aug 5 15:35:49 PDT 1998

Made some UI changes to Pathfinder (mash_server), including adding help pages.
Now that smash works, added mb recording to Pathfinder, made a few mb recording/playback bug fixes.

[YC] Thu Jul 30 19:03:43 PDT 1998

Added automatic e-mail updates for mash-1

[YC] Wed Jul 29 11:49:22 PDT 1998

ran autoconf to create new configure script that includes Bill Fenner's changes to configure.in
Sanitized mb for smash by getting rid of references to Tk.
smash now compiles without linking in any Tk.

[YC] Mon Jul 27 15:12:36 PDT 1998

"Rewrote" tcl-expand.tcl, so import during make-time takes two-thirds the original time. The main fix was to move a regsub from the main loop that parses every line in the source file to inside an if clause that first does a simple string match and only if that succeeds, performs the regsub.
[TDH] Tue Jul 21 21:20:43 PDT 1998

added methods to Network and DataHandler: a recv that grabs the sender's port number from the packet and passes it up
updated UDPChannel to use it and ERSServer accordingly
added a UDPServer class which supports sending/receiving state updates to/from both a mcast addr and a list of unicast addrs. Supports ephemeral ports at clients and variable time-out for the unicast list
updated the room control apps to use UDPServer
[ACS] Wed Jul 1 13:27:38 PDT 1998

Fixes to use the XShm extension, if available. Problem pointed out by Mark Handley.
[ACS] Mon Jun 15 23:46:25 PDT 1998

Various nsdr/sdfor changes:
Fixed SDPParser to handle multiple attributes of the same type (e.g., there are often multiple rtpmap attributes)
First cut at dynamic RTP payload type handling in nsdr (for received announcements, no support yet for dynamic PTs during session creation)
Added UserApplication hooks for different prototypes analogous to hooks for different formats/attributes/etc
Updated AddressAllocator API to allocate a range of n contiguous addresses
Re-did the structure of sdfor command line arguments
Moved nsdr "plugins" from ~/.nsdr/apps.tcl to ~/.mash/nsdr-apps.tcl
Added/updated documentation for various nsdr classes
[CR] Sun May 31 17:01:21 PDT 1998

Added ability to import objects from a web server, as opposed to just local file-server (by specifying the TCLCL_IMPORT_DIRS environment variable). Rather than generating scripts in advance using tcl-expand.tcl, now we can just publish a variation of main.tcl as a complete mashlet and the necessary object code will be imported as needed. (Yes, startup is slower than if you use the monolithic version of the script, i.e. after the import commands have been expanded. And yes, it's even slower if you are fetching objects across web instead of local filesystem; Yatin suggested I cache objects that get downloaded, which I will leave for later.) The implementation is pretty rudimentary and entailed...

Augmenting mash interpreter's "source" procedure to accept EITHER a URL or local filename
Augmenting the mash interpreter's "import" procedure to accept EITHER URLs or local filenames in the importTables it processes
Modifying "mkImportTable" script to accept as its args, a list of filenames AND/OR URLs
Creating a script to publish the mashlets in our tcl-tree and modifying webupdate to do so every night
To offer an example of a dynamically generated mashlet, modified mash_server to return a short mash script with the "x-mash/x-script" mimetype, rather than an sdp announcement with the "application/x-sd" mimetype, when "view" is selected. The mashlet returned sets the TCLCL_IMPORT_DIRS env var to the url where the objects are published on the mash machine so that it will fetch all the objects it needs from the web-server instead of your local filesystem.

A couple things to note...

Rather than TCLCL_IMPORT, use TCLCL_IMPORT_DIRS
If haven't done so recently, update, reconfigure, and make in your tclcl directory so that the http library, tcl-import.tcl, tcl-http.tcl are incoporated.
mkImportTable now redirects itself to smash rather than tclsh so make sure smash is in your path.

Effected files: Tcl/tcl-import.tcl Tcl/Makefile.in Tcl/tcl-object.tcl Tcl/tcl-http.tcl mash-1/publish_mashlets.tcl mash-1/tcl/common/mashlet-publisher.tcl mash-1/mash-tclinit.cc mash-1/mkImportTable mash-1/tcl-expand.tcl mash-1/tcl/applications/mash_server/sdp_agent.tcl mash-1/tcl/mui/main.tcl mash-1/tcl/mui/application-mui.tcl
[ACS] Thu May 21 17:53:45 PDT 1998

Fixed NetworkLayer to not disable sending on a layer when (receiving) subscription to that layer is dropped.
[ACS] Mon May 18 15:19:27 PDT 1998

Reworked RLM implementation. A single implementation (in tcl/net/rlm.tcl) is now shared between mash and ns. A subclass (in tcl/net/rlm-mash.tcl) handles mash-specific RLM operation. See the documentation for the MMG class in otcldoc for further details.
NetworkManager now runs RLM if there are multiple layers and the useRLM option is set.
Added argument -useRLM to vic
Source::reportLoss -> Source::reportLoss_
Changed upcall on packet loss (Source::notify) to include the layer on which the loss occured as an argument.
[CR] Mon May 11 17:16:48 PDT 1998

Fixed msp to use FontInitializer so rover no longer gets undefined font error.
Split the classes defined in tcl/vat/ui-main.tcl into separate files.
Effected files: tcl/vat/ui-rank.tcl tcl/vat/ui-ctrlmenu.tcl tcl/vat/ui-siteentry.tcl tcl/vat/ui-sitebox.tcl tcl/vat/ui-sitename.tcl tcl/common/fonts.tcl tcl/msp/application-msp.tcl tcl/vat/ui-main.tcl
[CR] Fri May 8 15:33:35 PDT 1998

Added -sdp and -sdpFile options to MuiApplication so that helper applications and plugins (or even a user) can provide sdp announcements in either a stream of data or in a file, rather than having to process the announcement into the appropriate MuiApplication args (like -a, -v, -mb, etc.) themselves.
[CR] Wed May 6 01:14:42 PDT 1998

Added some methods to UserApplication/MUI for parsing an sdp announcement into the arguments for the mui application, much like they are parsed for vic, vat, and mb. Previously, mplug and nsdr only parsed out the specs from the announcement.
Originally, under the premise that Applications should be standalone, did not allow them to take a widget-path as an argument in which to pack ui. Now, realized that Applications ought to take a widget-path in which to pack their UI, so that the application can be embedded, for example in a browser, as is done by MPlug.
Effected files: tcl/nsdr/user-apps.tcl tcl/mb/application-mb.tcl tcl/mb/main.tcl tcl/mui/application-mui.tcl tcl/vat/application-vat.tcl tcl/vat/main.tcl tcl/vic/application-vic.tcl tcl/vic/main.tcl tcl/rvic/main.tcl tcl/hvic/main.tcl
[YC] Tue May 5 10:34:52 PDT 1998

Added two new parameters to prefs-mplug (for UNIX): mplug.stdout and mplug.stderr. You can add these parameters to your ~/.mash/prefs-mplug file and specify a filename to redirect stdout and stderr (respectively) to. This option is not used on Windows, since MASH on Windows has its own console where all output is redirected to.
[CR] Tue May 5 06:48:27 PDT 1998

MuiApplication is now capable of accepting any combination of the specs (-mb -v -a) as long as at least one is supplied. This enables "custom" UI's to be created given an SDP announcement, as can be demonstrated by selecting SDP announcements from mash_server. I will continue to improve the ui permutations; just wanted to commit something that worked.
Fixed mui executable to work in MPlug again.
A little progress on flexible video switching for UIs...

Created VideoBoxManager class to take over some methods from MuiUI and VideoBox. Starting to make switching policy less hacky by allowing a default cname or nickname list to be provided.
Started to add drag-and-drop capability for ActiveSources. Want to reorg a bit before continue.
Eliminated UserWindow/Mui class.

Effected files: tcl/vic/ui-videoboxmgr.tcl tcl/vic/ui-activesource.tcl tcl/vic/ui-activesourcemgr.tcl tcl/vic/ui-videobox.tcl tcl/vic/ui-main.tcl tcl/rvic/ui-remote.tcl tcl/hvic/ui-headless.tcl tcl/mui/application-mui.tcl tcl/mui/main.tcl tcl/mui/ui-main.tcl
[LKW] Mon May 4 18:53:02 PDT 1998

Happily, "second" granularity not good enough for tracing. Now have "us" granularity.
Added tracing for when a page is first "seen" and when a page is uploaded to the server. go out.
[LKW] Sun May 3 13:50:12 PDT 1998

Added aids for tracing:

can record requests and play them back later w/ -pr and -auto.
can trace using -trace . Traces show when and what type of messages go out.

[AH] Wed Apr 29 17:32:13 PDT 1998

The mash_server now has the ability to view sessions using the mimetype application/x-sd.
The rec_agent cleans up after itself by deleting archive modules that never actually received streams to record.
A status_checker script now lives in the tcl/applications/mash_server directory. This simple script periodically pings the mash_server to make sure the server remains alive. If a ping fails, the checker sends notification via email and attempts to restart the server.
When the mash_server starts up, the rec_agent now reads from a cache containing scheduled recordings to reschedule recordings and the sdp_agent does the same to restore its list of sessions.

[YC] Tue Apr 28 17:11:13 PDT 1998

Checked in preliminary scripts for installing new mime types with mplug
[CR] Tue Apr 28 14:55:29 PDT 1998

The Application should not be sent as an arg to any other object, since it makes the object dependent on the existence of an Application object. To start making the UI objects independent, the "app" arg has been removed from the init methods of: VicUI VatUI MuiUI HeadlessVicUI RemoteVicUI MBUI
Effected files: tcl/hvic/main.tcl tcl/hvic/ui-headless.tcl tcl/mb/application-mb.tcl tcl/mb/net.tcl tcl/mb/ui-mboard.tcl tcl/mb/ui-menu.tcl tcl/msp/ui-vat.tcl tcl/msp/ui-vic.tcl tcl/mui/application-mui.tcl tcl/mui/ui-main.tcl tcl/rvic/main.tcl tcl/rvic/ui-remote.tcl tcl/vat/application-vat.tcl tcl/vat/ui-main.tcl tcl/vic/application-vic.tcl tcl/vic/ui-activesource.tcl tcl/vic/ui-activesourcemgr.tcl tcl/vic/ui-ctrlmenu.tcl tcl/vic/ui-main.tcl
[CR] Tue Apr 21 03:29:24 PDT 1998

Decomposing VicUI. Moved some of it's methods into other objects, VisualFrame, ActiveSourceManager, UISrcList, and UISrcListWindow, to enhance reuse and simplify the VicUI object.

Moved some of VicUI's methods into a new object, VisualFrame so that all video apps can create these tk frames and reuse these methods.
Moved some of VicUI's methods (bump, really_activate, redecorate) to a new object, ActiveSourceManager, which is also an observer of VideoAgent. It is used to dispatch and manage ActiveSources. It is now flexible enough to layout the ActiveSources' VideoWidgets in either a horizontal or vertical grid.
Since they didn't have much in common, VicUI is no longer a subclass of UISrcList. They are now separate objects, both which are observers of VideoAgent.
UISrcList is no longer subclassed from TopLevelWindow, so that it's contents can now be embedded in any frame, regardless of whether or not it is a TopLevelWindow. You can now use a new class, UISrcListWindow, to embed the UISrcList in a TopLevelWindow for you, as vic does.

Started merging some of the MuiUI methods that had been overriding VicUI methods for the mui application.
Eliminated the need for the MSP_VicUI & MSP_VatUI by pushing their methods into VicUI and VatUI for reuse.
Previously, a ControlMenu was passed as an argument when creating an ActiveSource or UserWindow. Since, a ControlMenu should not be required in order to create an ActiveSource or UserWindow (though an ActiveSource and UserWindow should be required in order to create a ControlMenu, being that it is esentially a UI for controlling the behavior of these objects), they are no longer arguments to the init methods of these objects. They were originally sent as arguments so that the ControlMenu's tkvars, useHardwareDecode and muteNewSources, could be dynamically accessed, but now instead, for a ui to create a ControlMenu, it must implement the accessor methods, use_hw_decode and mute_new_sources.
Adding default 'appname' of "mash" to all objects so that even if the programmer doesn't instantiate an Application object, other objects will be able to do "$self get_option appname". For cases in which the programmer instantiates an Application object, the appname will be overridden. An 'appname' can be useful for including in error messages or titles displayed for ui components.
Added the PaneManager object which sets up vertical/horizontal panes offering the user a grip with which to adjust the boundary between them.
Effected files: tcl/ui_tools/pane-manager.tcl tcl/vic/ui-activesource.tcl tcl/vic/ui-visualframe.tcl tcl/vic/ui-activesourcemgr.tcl tcl/common/application.tcl tcl/common/ui-stats.tcl tcl/common/ui-tk.tcl tcl/common/util.tcl tcl/hvic/main.tcl tcl/hvic/ui-headless.tcl tcl/msp/ui-vat.tcl tcl/msp/ui-vic.tcl tcl/mui/ui-main.tcl tcl/rvic/ui-remote.tcl tcl/vat/panel.tcl tcl/vat/ui-main.tcl tcl/vic/application-vic.tcl tcl/vic/ui-ctrlmenu.tcl tcl/vic/ui-main.tcl tcl/vic/ui-srclist.tcl tcl/vic/ui-videobox.tcl tcl/vic/ui-windows.tcl
[LKW] Mon Apr 20 16:57:35 PDT 1998

Makefile.in: run mc as a smash app.
common-mc.h: don't print the dprintf() messages.
manager-mc.[cc,h]: add a change_key() method to handle url redirects.
request-mc.cc: fix a bug where i didn't check if the cacheBuf ptr was null before dereferencing.
application-mc.tcl: deal with url redirects correctly: added update_proxy_connection to update the mapping between proxy connection objects and urls; add the update_url method that updates all the data structures: outstanding requests, outstanding replies, holes data structures, and the actual cache buffer entries.
ht.tcl: add a change_key method to the data structure and a check test.
launcher.tcl: change call to add_proxy_connection to the new, smarter update_proxy_connection; cleaned up check_for_redirect proc a bit
[CR] Fri Apr 17 00:38:42 PDT 1998

Renamed some of MeGa's resource database options in vic, vat, and mb to be media-specific so that when the resources are combined, as they are in mui, individual values can be specified for each type of media.

megaRecvPort -> megaRecvAudioPort megaRecvVideoPort megaRecvMbPort
megaSession -> megaAudioSession megaVideoSession megaMbSession
megaCtrl,asCtrl -> megaAudioCtrl megaVideoCtrl megaMbCtrl
maxSessionBW -> maxAudioSessionBW maxVideoSessionBW maxMbSessionBW
sessionBW, localSessionBW -> audioSessionBW videoSessionBW mbSessionBW
megaFormat -> megaAudioFormat megaVideoFormat megaMbFormat
serviceLocation -> audioServiceLocation videoServiceLocation mbServiceLocation
Also, to keep the variable-names consistent, changed sessionSpec, videoSessionAddr, audioSessionAddr, mbSessionAddr to videoSessionSpec, audioSessionSpec, mbSessionSpec.

For readability, changed Configuration::usage to output each of the usage options on separate lines.
Fixed up several minor miscellaneous UI loose-ends.
Effected files: tcl/common/application-rtp.tcl tcl/mb/application-mb.tcl tcl/mb/net.tcl tcl/msp/application-msp.tcl tcl/msp/ui-vat.tcl tcl/msp/ui-vic.tcl tcl/mui/application-mui.tcl tcl/net/agent-audio.tcl tcl/net/agent-video.tcl tcl/vat/application-vat.tcl tcl/vic/application-vic.tcl tcl/vic/ui-ctrlmenu.tcl tcl/video/handler.tcl tcl/common/application-rtp.tcl tcl/vic/ui-main.tcl tcl/vat/ui-main.tcl tcl/common/application.tcl tcl/mui/ui-main.tcl tcl/mb/ui-mboard.tcl
[YC] Mon Apr 13 17:52:39 PDT 1998

Added mb and tgmb to the smash rule in Makefile.in
[AMS] Mon Apr 13 16:56:46 PDT 1998

Checked in some improvements to Mars and rover. Now rover can run as a plug-in.
[EA] Sat Apr 11 01:06:09 PDT 1998

Turned off load balancing in HM's. Also changed maximum wait time be adaptive with number of host managers. Still need to bias timers according to load.
[ACS] Thu Apr 9 15:47:25 PDT 1998

Fixed ERS objects used by nsdr/sdfor to include server port number in the reply packet.
ProgramSource/SAP now writes all programs to be announced to a file in the cache directory so that the program can continue to be announced if an applications is quit and restarted.
Nsdr cache is now written periodically (every 5 minutes by default).
[EA] Thu Apr 9 00:02:06 PDT 1998

Removed "spec" from VicUI constructor and "app" from VideoHandler constructor.
[EA] Wed Apr 8 22:59:25 PDT 1998

Moved cb-otcl.tcl to the tcl subdirectory so it is imported and not compiled and coordbus.cc to net. Removed group-ipc.cc since it is not used or needed any longer. Finally, removed coordbus directory as a result.
[LKW] Wed Apr 7 11:23:21 PDT 1998

Cleaned up remaining printfs in tcl portion of mc and the Debug dialog object.
[EA] Mon Apr 6 00:10:21 PDT 1998

Changed used of strsep() to more portable strtok().
Cleaned up small little problems with MeGa operation of tools.
[TDH] Fri Apr 3 04:09:51 PST 1998

most importantly, stayed up later than Andrew thurs night. :)
In tcl/applications/uc: ('universal client'... need a better name)
added a "meta" application that (currently) acts as a thin wrapper for client UIs. If no client-UI / address pairs are specified on the command line, it defaults to a list of Berkeley CoLab serial control applications. (I'll keep the servers running.)
Currently, all the device interfaces share state amongst the server and multiple client instantiations -- other users' updates will be reflected to you (for better or worse).
Of course, needs work on many fronts -- this is a quick, preliminary cut. But please feel free to give it a try. ("bin/mash tcl/applications/uc/main.tcl")
[ACS] Fri Apr 3 01:02:05 PST 1998

Implemented proxy announcements -- when a new session is created in nsdr, it may be configured to carry out an expanding ring search to contact sdfor which it then contacts via unicast and gives it the program to advertise on its behalf. More details and lots of fixes forthcoming...
[LKW] Wed Apr 1 19:22:58 PST 1998

Miscellaneous bug fixes for MASHCast. Also, added two files to make some of the debugging statements optional. Took out the little dot next to my name in CHANGES.html. :)

[AH] Wed Apr 1 17:32:02 PST 1998

Added the functionality (in SystemArchive and SessionCatalog) to allow the Rec_Agent to write the SDP Message information to the catalog file. This will be used to playback a session using Netscape.
Moved the top-level HTML pages to the mash_server/html/ directory so that the MASH_Server can serve-up those pages dynamically rather than going to some public_html directory and hard-coding the server and port number.
Added files to start support for the playback tool. Currently, the functionality of the HTTP Play_Agent involves display the current SDP archive.

[ACS] Tue Mar 31 15:24:04 PST 1998

Added UDPChannel class -- a simple wrapper around the Network class that can be used from Tcl to send and receive UDP datagrams.
Added two base classes that implement expanding ring search, ERSClient and ERSServer. Full details in otcldoc.

[CR] Mon Mar 30 19:45:09 PST 1998

Rather than including mediaboard within mui by embedding a "new MBApp", now actually re-assembling & integrating the behavior of MBApp into MuiApplication.
Modelled most of MuiApplication after the latest versions of VicApplication, VatApplication, MBApp in order to sync up with recent changes I've made to all three.
To make it easier to integrate VicApplication, VatApplication, and MBApp, changed some instvar and resource names to avoid conflicts that could result from less-specific names...

"agent_" -> "mbAgent_"
"defaultFormat" -> "videoFormat"
"ui_" -> "mbui_"
"sessionAddr" -> "mbSessionAddr"
"audioSession" -> "audioSessionAddr"
"videoSession" -> "videoSessionAddr"

Effected files: tcl/hmsp/application-hmsp.tcl tcl/mb/application-mb.tcl tcl/mb/main.tcl tcl/mb/net.tcl tcl/mb/ui-import.tcl tcl/mb/ui-mbtools.tcl tcl/mb/ui-menu.tcl tcl/msp/application-msp.tcl tcl/msp/ui-vic.tcl tcl/mui/application-mui.tcl tcl/mui/main.tcl tcl/mui/ui-main.tcl tcl/net/address-block.tcl tcl/vic/application-vic.tcl tcl/vic/ui-ctrlmenu.tcl tcl/vic/ui-resource.tcl

[ACS] Fri Mar 27 14:05:53 PST 1998

First cut at dynamic RTP payload types. vic and vat can receive streams that use a dynamic PT by using the -map command line argument. For example, vic -map 120:pvh ... will decode packets with a PT field of 120 as PVH. The sending side requires a simple change to the encoder that has been made only to the PVH codec so far.
Added Configuration::register_list_option which is similar to register_option but the argument may appear multiple times on the command line and all arguments will be added to a single list. (See otcldoc for a more complete explanation).

[CR] Wed Mar 25 02:32:11 PST 1998

Moved any UI-related work from some application objects to their respective UIs: i.e. from VicApplication -> VicUI, from VatApplication -> VatUI, from MBApp -> MBUI, from MuiApplication -> MuiUI.
Effected files: tcl/mb/application-mb.tcl tcl/mb/ui-mboard.tcl tcl/vat/application-vat.tcl tcl/vat/ui-main.tcl tcl/vic/application-vic.tcl tcl/vic/ui-main.tcl tcl/mui/application-mui.tcl tcl/mui/ui-main.tcl tcl/video/handler.tcl

[CR] Tue Mar 24 18:23:34 PST 1998

Moved some add_defaults from MBApp to the objects that actually use the options.
Effected files: tcl/mb/application-mb.tcl tcl/mb/ui-canvas.tcl tcl/mb/ui-import.tcl tcl/mb/ui-mboard.tcl tcl/mb/ui-menu.tcl

[CR] Tue Mar 24 16:31:27 PST 1998

Changed AudioAgent & VideoAgent to take the spec as an arg, rather than AddressBlock.
To simplify MBApp,

Moved the init_net method from MBApp into a new class: MBNet.
Moved the postscript method from MBApp to the MBMenu class, the only place it was used.
Moved some of MBApp's add_default lines to the objects that actually use the values of these options.

To simplify VicApplication, created a new class called VideoHandler to take care of setting up a VideoAgent and VideoPipeline, with SCUBA if desired.
Effected files: tcl/mb/net.tcl tcl/video/handler.tcl tcl/demo/simple-vid.tcl tcl/mb/application-mb.tcl tcl/mb/ui-mboard.tcl tcl/mb/ui-menu.tcl tcl/msp/ui-vat.tcl tcl/msp/ui-vic.tcl tcl/mui/application-mui.tcl tcl/net/agent-audio.tcl tcl/net/agent-video.tcl tcl/vat/application-vat.tcl tcl/vic/application-vic.tcl

[ACS] Mon Mar 23 17:43:10 PST 1998

Added basic support for specifying media stream attributes of new sessions to nsdr.
Plugged a few nsdr memory leaks - there are still many more.

[EA] Sun Mar 22 13:46:47 PST 1998

Ported MeGa to new CoordinationBus.
Cleaned up all the CoordinationBus in mash. Got rid of all other implmentations. Only directory left is "coordbus".

[ACS] Sun Mar 22 13:11:57 PST 1998

Fixes to sdfor to make it work again.
Added announcer program, a simple script that can be used to announce a single session. See tcl/sdfor/main-announce.tcl

[ACS] Fri Mar 20 00:24:42 PST 1998

Lots of nsdr changes:
changed default cache directory from ~/.nsdr/cache to ~/.mash/nsdr-cache.
Various fixes from Bill Fenner:

Cache directory is created if it does not already exist.
ScopeZone can now take the sap port as part of the range specification for zones that do not use port 9875 (e.g., CAIRN).

Began to expand the UserApplications interface so that apps can register formats and attributes that should be offered as options during session creation.
Created separate "simple" and "advanced" interfaces for session creation. This is a first pass and lots of work remains to be done on the session creation dialogs.
Re-worked the portion of the session creation interface in which media streams are enumerated. Advertisements for sessions that use layered media can now be created although the interface is still pretty clunky and needs lots of work.

[TDH] Thu Mar 19 00:31:16 PST 1998

added directories tcl/applications/avswitch_server and tcl/applications/avswitch_client and the files in them. These are a working client/server version of the avswitch controller.
made changes to all the files in tcl/serial (and the above) to fix bugs and add some better support for bursts of asychronous activity (batches updates and cancels timers as they are superseeded, etc.)
changed all the files to (mostly) match the usual MASH coding conventions. I'm worried I might have subtlely broken a few things but only more banging on them will tell.

[ACS] Wed Mar 18 16:48:51 PST 1998

Changed AnnounceListenManager to not include a trailing null byte in the payload.

[ACS] Wed Mar 18 15:25:32 PST 1998

Fixed the way flags are set in SAP headers by AnnounceListenManager/SAP. Packets are now sent with a version number of 1 and the compression bit off whereas previously they were being sent with a version number of 0 and the compression bit turned on.

[CR] Wed Mar 18 00:45:22 PST 1998

Moved the creation of AnnounceListenManager/AS/Client/MeGa/Audio from VicApplication into VideoAgent and the creation of AnnounceListenManager/AS/Client/MeGa/Video from VatApplication into AudioAgent. The megaSession resource in the options database is still what determines whether or not mega will be used. Also updated msp and mui accordingly.
Effected files: tcl/demo/simple-vid.tcl tcl/msp/ui-vat.tcl tcl/msp/ui-vic.tcl tcl/mui/application-mui.tcl tcl/net/agent-audio.tcl tcl/net/agent-video.tcl tcl/vat/application-vat.tcl tcl/vic/application-vic.tcl

[AH] Thu Mar 12 22:34:55 PST 1998

Changed Rec_Agent so that it now schedules future recordings; this feature should work for both regular and repeated sessions. Note that for repeated sessions, only the next/current session is recorded, not all future ones.
Added the ability to display the status of a scheduled recording.
Added time information to the SDP description pages.

[CR] Thu Mar 12 13:48:28 PST 1998

Moved a handful of options set by "add_default" lines in application-vic.tcl, application-vat.tcl, and application-mui.tcl to the "-configuration" option of the Class definitions of the objects that actually use the defaults. Figured it'd be cleaner to set the defaults in the objects themselves and just let the applications override them if necessary. Removed options that did not appear to be used anywhere.
Moved some of the common font definitions to a new object, FontInitializer, and moved some of the tk resource initialization to a new object, WidgetResourceInitializer.
New files: tcl/common/fonts.tcl tcl/common/widget-resources.tcl
Effected files: tcl/common/ui-stats.tcl tcl/mui/ui-main.tcl tcl/net/address-block.tcl tcl/net/agent-audio.tcl tcl/net/agent-rtp.tcl tcl/net/agent-video.tcl tcl/vat/panel.tcl tcl/vat/ui-audio.tcl tcl/vat/ui-main.tcl tcl/vic/ui-ctrlmenu.tcl tcl/vic/ui-main.tcl tcl/vic/ui-switcher.tcl tcl/vic/ui-windows.tcl tcl/video/pipeline.tcl tcl/mui/application-mui.tcl tcl/vat/application-vat.tcl tcl/vic/application-vic.tcl tcl/mb/application-mb.tcl

[AH] Mon Mar 9 16:02:05 PST 1998

Added a mash_server module to the applications directory. The mash_server is a HTTP server that can integrate multiple MASH components. So far, I have tested the server with two tools, an SDP Announcer and SDP Recorder (the result looks similar to the demo I had a couple weeks ago). To run the mash_server, do the following:

Add mash_server to APPS list in Makefile.in.
Reconfigure.
In the .mash directory, make three new prefs files: prefs-sdp, prefs-rec, and prefs-agent. In the prefs-sdp file, specify the "sessions_dir" prefs which is the directory where new SDP announcements will be stored. In the prefs-rec file, specify the "archive_dir" and "schedule_dir" directories. In the prefs-agent file, specify the "html_dir" where the HTML files used by the DynamicHTMLifier can be found.
This server is meant to make it easy to HTMLify MASH components. To plug-in a component, the class must have the following characteristics:

Inherit from HTTP_Agent (applications/mash_server/http_agent.tcl).
Implement the method handle_request that handles a HTTP request and returns a list containing the HTML page to be returned and the status code.
To add this agent to the mash_server, use the add_agent method (see applications/mash_server/main.tcl).
Note: The DynamicHTMLifier is a nice way to produce dynamic HTML pages on the fly (see applications/mash_server/dynamic_html.tcl).
I also changed the following things in the process of implementing the mash_server.

Added a record_program method to the ArchiveSystem object (mash-1/tcl/archive/archive-system.tcl). This method takes a Program and a tag as parameters and records all media related to the Program by calling record_rtp_session and record_wb_session accordingly.
Added several methods to the SDPMessage and SDPTime classes (mash-1/tcl/common/sdp.tcl) to make htmlifying message information easier.
Changed the HTTP_Server object (mash-1/tcl/net/http_server.tcl) so that is more like a general HTTP server. I also added the ability to return any general reply, not only OK replies.
Removed the files from the tcl/sdpserver directory. This was the start of what became mash_server.

[YC] Thu Mar 5 13:38:01 PST 1998

Cleaned up tcp.tcl. Added hooks to TCP/Server, so you shouldn't have to subclass it just to define the create_channel procedure. TCP/Server::open now accepts two arguments: port and create_channel.

create_channel may be the name of a class. TCP/Server::create_channel will then create an object of that class when it receives a new connection.
It may be a command to invoke, in which case TCP/Server::create_channel appends the Tcl channel id associated with the new connection to the command and invokes it.
You can completely leave out the second argument to open and just redefine TCP/Server::create_channel in a sub-class.

The class that you create for the new connection on the server-side must be sub-classed from TCP (not TCP/Client) and if you define your own command to invoke for creating this object (in TCP/Server::open), then you must remember to invoke "$obj open $chan" on the object that you just created
Updated tcl/arms/, tcl/rtsp/, tcl/sdfor/, tcl/mc/, /tcl/caster/ to conform to the API changes. Removed some redundant sub-classes of TCP/Server from some of these modules.

[YC] Thu Mar 5 11:29:33 PST 1998

Changed the coordbus callback API, so that the first argument to the callback method is a list of key-value pairs describing the event. The keys are srcid, dstid, event, and cb. Use "array set" to convert the list into an array and reference it in your callback procedure if necessary.

[YC] Wed Mar 4 21:37:46 PST 1998

mtrace.cc,tcl: Renamed trcVerb to trcVerbose, added trcCB
New CoordinationBus class based on the UCL spec
Updated vic, vat, cues, mui and msp to conform to the new CoordinationBus API
MeGa stuff still needs to be ported

[AMS] Wed Mar 4 17:06:31 PST 1998

Added tcl/applications, a new home for application directories
Created tcl/applications/player and tcl/applications/recorder and moved the application specific files from these tools into them. tcl/archive still holds the core archive objects, like rtp-play.tcl
Added tcl/ssac directory and some files to handle SSAC protocol. SSAC stands for soft state archive control protocol, and is our new RTSP replacement.
Checked in initial code for an AS1 based archive servent (mars) and client (rover). Adding a new servent class required changes to hm/agent-hm.tcl and hm/handler.tcl. Also added tcl/applications/mars tcl/applications/rover, but these still need a lot of work.

[ACS] Wed Feb 25 16:15:11 PST 1998

Changed NetworkManager to only call graphics-init if the resource "useLayersWindow" is on. Turned that resource on by default in vic

[EA] Tue Feb 24 22:51:58 PST 1998

Modified tcl-expand.tcl to accept input from stdin. Specify by giving 'stdin' as the argument to the script.

[ACS] Mon Feb 23 22:42:14 PST 1998

Fixed video agent to tell a new decoder the proper number of total layers when they it is instantiated (i.e., vic now starts displaying layered video immediately without requiring an explicity set-subscription-layer)
Changed handling of layered SDP announcements so the total number of layers does not have to be specified.
Fixes so session announcement now works again after recent changes to various nsdr classes.
Added an optional "simple" interface for looking at program info in nsdr. It can be enabled by seting the "simpleInterface" resource to 1.
Reorganized sdfor (the session announcement "agent"). It now creates a listening TCP socket which can be contacted by nsdr by enabling the "useProxy" resource (the TCP interface is really for doing advertisement but can also be used for receiving sessions). Forwarding is broken at the moment.

[TW] Sun Feb 22 17:30:52 PST 1998

Added classes CuesSender and CuesReceiver. The two classes provide the functionality of sending and receiving awareness cues. The cues currently available are "raise hand", "speak louder", "I agree" and "I disagree". You create an instance of these classes by passing it a window path, and a global coordination bus object.

CuesSender makes a gui for the cues; there is just one format now. It is a list of checkbuttons with the cues bitmaps next to them. It also sends the cues messages on the global coordination bus.
CuesReceiver is similar to CuesSender, it also creates a gui for blinking cues, and it is just a list of the cues images. You can specify the size of the images, it is just sm and lg for now.

Changed vic and vat so they use CuesSender and CuesReceiver to receive and send cues. You invoke the cues by the command line argument -useCues. If this argument is not used, the applications do not include the cues images and buttons in the ui.

The cues images are displayed on the switcher windows in vic.
The cues buttons are displayed at the bottom of vat.

Also fixed a bug I committed in next_active_src in ui-windows.tcl.

[TW] Fri Feb 20 14:31:30 PST 1998 Added things to allow you to select a group of participants to voice- and/or timer-switched to, and you can select this group from a menu in the switcher window. When the switcher window is first created, the switchable list includes everybody in the session.

{vat,vic}/application-{vat,vic}.tcl, net/agent-audio.tcl
o Now, vic and vat uses CoordBus_ (the one Yatin wrote). A global coordination bus is created for communication among tools on different machines, and a local coordination bus for tools on the same machine. The global bus is not used now; it is for the cues stuff which will be checked in later.
o AudioAgent now send focus message on the new local coordbus
o VicUI now register to listen for messages on the new local coordbus

vic/ui-window.tcl:
o Added UI components for the switch list menu.
o Changed next_activate_src so that if both voice- and timer-switched are on, don't timer- switched to someone else is currently speaking

vic/ui-switcher.tcl
o Changed methods to do this switch list business.

vic/ui-main.tcl
o Changed methods to notify the UI whenever something changes, so it can rebuild the switch list menu

Also, included bitmaps for the cues stuff in tcl/cues/bitmaps, and prelim. version of the cues code (they don't work!) in tcl/cues.

[EA] Fri Feb 20 18:24:45 PST 1998

Fixed up useJPEGforH261 flag in video objects.
Fixed up SunAudio with new options database (it hadn't been checked in a while!).

[LKW] Thurs Feb 18 13:53:16 PST 1998

[mc] MASHCast now has a more sophisticated repair algorithm including: use of the new "pending" message, fragment-specific replies & requests and the treatment of HTTP GETs like requests.

[AH] Wed Feb 18 13:53:16 PST 1998

Added a new module TCP/HTTP_Server which can be found along the following path: mash-1/tcl/net/httpServer.tcl.

[SR] Tue Feb 17 16:14:56 PST 1998

Changed the priority scheme in selecting containers to advertise in session announcements. If touched since last time, wt. = 2 * BASE. If not, wt. = BASE. Assuming that the probability of "last packet loss" is the same for all containers, this is the right scheme. This also seems to work better!
Fixed more bugs in holes processing. Really need to make the holes_ list sorted, so that duplicates won't occur and also to coalesce holes. Right now, these lists are small, so we don't mind walking through the whole list.

[SR] Sat Feb 14 19:36:37 PST 1998

Added "coupon collectors" algorithm to select hottest 'k' containers to pick for a session announcement.
Tcl hooks to start/stop SRM_ANNOUNCEMENTS. Timers are handled within C++.
Fixed memory bugs in send path.

[EA] Fri Feb 13 14:50:40 PST 1998

Modularzed video control menu even more so that alternate interfaces are easier to build.

[SR] Wed Feb 11 10:51:04 PST 1998

Changed the lowest-level API to reflect the new API. See SRM API for more details on packet formats and the function call API

[EA] Tue Feb 10 22:54:40 PST 1998

Moved all MeGa "alive" checks into AS. Much cleaner now!

[EA] Mon Feb 9 11:57:01 PST 1998

Added importLocation to tcl-expand.tcl. This file should contain a list of directories, one on every line. If it is in the local directory it overrides the TCLCL_IMPORT files. This makes overriding the import search path for specific tools a little easier.
Chaged ArchiveSystem to have a separate lts for each stream. This is a temporary fix to the problem that the current archive architecture does not allow temporal manipulation on a stream granularity. When this is fixed, we can go back to a sigle lts. ArchiveStream now has an 'offset_' parameter that offsets the stream's lts by the given amount of seconds. This enables the offsetting of streams w.r.t each other in a single session.
Added 'resize' instproc to HeadlessVicUI for an API to resizing the video window.

[SR] Fri Feb 6 20:13:05 PST 1998

Fixed bugs in MSP bookmarks.
There are two ways to create bookmarks

While viewing the stream, click Add Bookmark and type in a text tag. This creates a file called ~/.msp/bookmarks.bm. On startup, msp loads this file into its bookmark table.
Hand a list of bookmarks to msp through the -server flag. msp -server cscw.msp (See ~suchi/demo/mash-1/bin/cscw14.msp for an example.)

[ACS] Thu Feb 5 18:24:14 PST 1998

Made defaults for PT to name mapping for RTP subclasses into class variables so they can be accessed elsewhere without instantiating an RTP/Audio or RTP/Video object.
Implemented layered session announcement reception in nsdr. Includes a number of changes to nsdr internals but shouldn't affect other apps.

mash-5.0a10 Wed Feb 4 18:10:58 PST 1998

[TLT] Wed Feb 4 14:41:00 GMT-8:00 1998

fix bug in application-mb.tcl which results in multiple calls of mb_sender attach when the network resets (when using mega).

[TLT] Tue Feb 3 00:28:21 GMT-8:00 1998

fix KeyEditor instproc toggle
hack setup/main.tcl to do a 'cd' first if setup is starting from the directory before 'mash'.
updated setup file locations to reflect where they will be in the zip file
fix some typos in setup (wrong procedure names etc.)

[TLT] Mon Feb 2 21:31:32 GMT-8:00 1998

[srmv1] fixed srmv1 encryption bug. crypt-des was setting bit 14 to 1 when padding is needed. In srmhdr, this is part of 'version'. Thus, packets got dropped by srm when padding is added and the padding bit set. To fix this (for now), 'version' is shifted to bits 7 & 8. Bit 13 is set to 1 always so that older versions of srm can 'receive' new data. Luckily bit 14 will never be set for non-encrypted packets, so for now we remain backward compatible.
[win32 makefile.vc] added tgmb files to objects list, fix up Yatin's mplug and setup file changes.
[mb] fix delete error on quit. (removed extra delete of session_ in application)
[tgmb] minor edits to remove warnings / errors for win32 compilation.

[TLT] Mon Feb 2 12:46:05 GMT-8:00 1998

fixed KeyEditor (for encryption key entry) bug (entry calls $self update key when key is set). This didn't work after KeyEditor was changed not to inherit from Entry. I added an optional parameter to specify a different object to call update in Entry's constructor.
[mb] fixed page ordering bug when printing. Also, blank pages will not be printed.

[YC] Sun Feb 1 19:04:20 PST 1998

Renamed the global variable mash_version to mash(version)
Removed some redundant MPLUG variables from the Makefile
Search for system-wide prefs-mplug in $MASH_HOME/lib, instead of $MASH_HOME/lib/mplug
Changed the mash prefs file format to "key: value", instead of "key value" to keep it uniform with the .XResources file format The prefs files can now contain comments as well. Lines that begin with # are considered commented
Modularized setup into a reusable script
Changed the default Tk icon for Windows from tk.ico to mash.ico
Added security dialog to script-loader (used by MPlug for x-mash/x-script)
Added preliminary support for import off the web for x-mash/x-script But, it isn't completely working yet, so I haven't checked in all of the associated files
Created a file tcl/setup/README.TXT which is distributed along with the binary distribution.
Created a simple setup.sh script that runs mash with the setup mash script

[ACS] Sat Jan 31 14:15:51 PST 1998

Addded to nsdr procedure for getting default name and phone number (for outgoing announcement) similar to what RTPAgent does (looks for resources in ~/.mash/prefs, posts a dialog box to enter defaults if they are not specified)
Various nsdr changes to allow editing of announcements. It doesn't quite work yet but nsdr no longer crashes when you try to edit an announcement.

[YC] Fri Jan 30 20:43:47 PST 1998

Added test files for mplug
Moved the mplug destination from bin to lib
Created a stub prefs-mplug file

[YC] Fri Jan 30 19:46:33 PST 1998

added a -disable-des flag
changed the -fPIC flags in Makefile, so mplug compilation works correctly when compiling mash statically

[TW] Thu Jan 29 13:32:13 PST 1998

Added a new module tcl/dissem for the push-based info dissem app. Should not affect anyone else.

[EA] Thu Jan 29 12:51:13 PST 1998

Integrated mediboard recording into mat. In the process fixed some bugs in the srm archival code where destructors were not deleting created objects.

[CR] Thu Jan 29 11:40:35 PST 1998

Have _temporarily_ made MuiUI a subclass of VicUI so that it inherits its methods and UI objects. (Had originally copied many of the VicUI and ActiveSource methods to serve as a basis for similar methods of MuiUI, so I am now going back and deleting those methods that I never modified, so that MuiUI and VicUI share some of their methods.)
Initial cut at creating a new WidgetClass called VideoBox. (Added new file mash-1/tcl/vic/ui-videobox.tcl) Used it in the mui interface for displaying the thumbnails and larger video streams.
Removed the ControlMenu argument from VideoWidget's init method by adding a useHW argument to VideoWidget's attach-decoder method, since VideoWidget only used ControlMenu for checking the use-hw option for VideoWidget's attach-decoder method. All the invocations I found for attach-decoder had easy-access to the ControlMenu, and I changed them to pass the additional argument.
Added some more comments to a handful of methods in ActiveSource, UserWindow, VicUI for mashdoc.

[YC] Wed Jan 28 18:04:35 PST 1998

Fixed bug in mb-record where the file headers were not being written properly

[EA] Wed Jan 28 12:24:11 PST 1998

Changed script generation in Makefile.in to use awk only rather than sed | awk, since some versions of sed can't handle the very long lines that appear in some of the scripts (e.g., the Image/GIF's). (it's also more efficient, but that doesn't really matter...)

[ACS] Wed Jan 28 00:20:51 PST 1998

Fixes to get nsdr working with mega. Recent changes to the ProgramSource/SAP class have caused lots of problems that need to be worked out - these changes are hacks to make it work for the time being.

[EA] Tue Jan 27 11:50:26 PST 1998

Host manager spawning code fixes. There is some wierd bug where the rsh does not return if the process has created one too many multicast channels. For now, I have disabled the 'generic' service just so I can debug MeGa. But this needs to be fixed. Perhaps this is some bug in tcl/otcl?

[ACS] Mon Jan 26 21:43:00 PST 1998

SDP Parser changes

Fixed various typos
Changed SDPMedia constructor so that it can be invoked without a SDPMessage argument.
Added unique_key method that returns a string that is always the same for the same announcement (essentially just the o= field with the version field removed)

Nsdr session creation now works. There are still lots of kinks to be worked out but the basic functionality is present.

[EA] Mon Jan 26 13:46:07 PST 1998

Small fixes to host manager protocol and mgamon with new AS message format.

[SM] Sun Jan 25 23:20:35 PST 1998

Added import and copyright to mb-record.tcl.
Did first cut of mb recording in archive-system.tcl.
Changed application-mb.tcl to use network-manager loopback method.

[EA] Fri Jan 23 12:02:17 PST 1998

One more pass over Active Service modules. Created directory tcl/as and put generic active services modules in there. MeGa stuff is now in tcl/mega and is subclasses of modules in tcl/as. A simple example is tcl/as/client-example.tcl which implements a fully functional active service client in about 30 lines.

[EA] Thu Jan 22 16:12:42 PST 1998

Major rewrite of entire MeGa system. Abstracted out the active service components and subclassed the MeGa service. This is in preparation of creating an ARMS active service. It is now much easier! Some parts still need another pass, but it's all almost there and is sufficient for now.

[ACS] Wed Jan 21 23:20:28 PST 1998

Added AddressAllocator class and subclass that does allocation via checking that there are no conflicts with address in SAP announcements. The structure leaves room to create new subclasses in the future that do address allocation via some other mechanism (e.g., MDHCP, AAP, etc).
Fixed Nsdr session edit window to use AddressAllocator and to properly allocate udp port numbers. (Session creation still doesn't work although primitive versions of most of the user interface elements are in place).
Added announcement capability to ProgramSource/SAP.

[EA] Tue Jan 20 13:21:43 PST 1998

First cut at a multimedia authoring tool, 'mat'. It's completely ad hoc, so no details at this point... It's just for demo purposes.
Fixed headless vic geometry problem.

[ACS] Mon Jan 19 23:51:27 PST 1998

Added sdfor, a simple smash tool that implements a soft-state gateway for SAP announcement. By setting it up to relay global SAP announcements in to an administratively scoped zone with a higher bandwidth than the global SAP bandwidth, session directory tools that listen to the local admin scoped zone will update much more quickly.
Various changes to nsdr to make some of its components reusable in sdfor.

[EA] Sun Jan 18 19:55:22 PST 1998

Changes to MeGa to client-driven gateway announcements.

[ACS] Sat Jan 17 18:20:54 PST 1998

Changed Entry class to take the name of the entry widget to be created as a parameter, rather than the name of a frame within which the entry widget should be created.

[ACS] Sat Jan 17 17:35:46 PST 1998

Reorganized ProgramSource class slightly in preparation for development of split architecture

[TLT] Fri Jan 16 20:43:29 GMT-8:00 1998

[widget class] changed WidgetObject instproc options to widget_options to avoid conflict with "Object instproc options".
[common] changed KeyEditor's label to "Encryption Key". This is more informative as "key" could mean too many things....
[srm] added some new extra checks to packet len's to prevent 'corrupted' packets (e.g. from encrypted sessions) to result in illegel memory access and thus seg faults.
[mb] add interface (under view/session info...) for changing local cname and encryption key.
Encryption support for mb is now available, but only slightly tested. We still need to port desCore to windows sometime...

[EA] Thu Jan 15 22:56:02 PST 1998

Added -old_ld flag for mplug compilation under IRIX-6. Mplug now works on IRIX platform.

[EA] Thu Jan 15 17:03:50 PST 1998

Added Configuration::arg_info which presents a human readable version of the argument database. In particular, it identifies optional and required arguments and their default values if applicable. The procedure returns a list with two elements: a list of the optional arguments and a list of the required arguments. The format is consistent with standard 'usage' statements with the default values apprearing in parentheses. Note that if the all arguments to an application are specified with switches, this information is sufficient for a 'usage' statement. Otherwise, an application should derive its own usage statement and use this procedure as part of the error message.
Added a default 'usage' proc to Application.
Added a '-help' flag that calls 'usage'.

[TLT] Thu Jan 15 16:42:19 GMT-8:00 1998

[mb] a bit more work done on load/save of mb format (still not fully functional yet).h
[vat] added 'wave' to the list of default output devices since I found one win32 device that goes by that name.
[video] fix bugs in video-win32.cc. There were some uninitialized variables, that results in crashes when devices are opened then closed before initialization occurs in start(). Also made the system pop up the format dialog boxes for generic (i.e. unrecognized) devices. Too many drivers only support some format, and also some formats are faster than others. This would allow users to intelligently select the right format. The longer term solution is to add the dialog box calls to the control menu...

[ACS] Thu Jan 15 15:42:03 PST 1998

Implemented simple editing of program timing (but it still needs a lot of work!)
Added otcldoc comments to several classes.

[ACS] Tue Jan 13 23:44:33 PST 1998

Fixed MeGa related bugs in nsdr.

[TLT] Mon Jan 12 02:08:21 GMT-8:00 1998

minor fixes to the other mui msp and vat for the newly added defaults
bug fixes to the various UI components of mb

[TLT] Sun Jan 11 04:48:27 GMT-8:00 1998

[win32 audio] updated audio-win32.cc to new API. I fixed some cases where the volume controls for input is not working on the way as well. The new API is slightly more generic but not perfect, since the windows API is structured to reflect too much on the actual hardware and not developer friendly. If things don't work, use the Windows system volume control.
[win32 audio] fix bug where port change won't be remembered if user changes it while 'talk' is not active.
[audio ui] added inputGain amd outGain defaults to application-vat so that there will be a default value for unrecognized devices. Also changed inputPort and outPort defaults to be a list so that we will more likely to select the microphone as the default input. convert list of port names to lower case to facilitate matching.
[audio ui] added a few more mappings to the port name -> bitmap logic.

[SM] Sat Jan 10 21:59:42 PST 1998

Port headless vic to import (so we can use it from mplug for the retreat demo). Also, fixed up so problems with how hvic was overriding vic's UI (this still needs to be reworked so vic UI components are more modular and reusable).

[YC] Fri Jan 9 19:30:09 PST 1998

mui works under MPlug. Create an MuiApplication/MPlug object instead of MuiApplication when it detects that it is running as a plugin for application/x-sd
mui has a new argument "-mb" which specifies the mb addrspec
added class UserWindow/Mui (a hack, for now) to get rid of the menubar in Vic's UserWindow

[YC] Fri Jan 9 13:02:41 PST 1998

Changed ui-windows.tcl so UserWindow does not necessarily create a new toplevel: if the "w" argument to the constructor of UserWindow is specified, it creates a frame $w for the UserWindow, else it creates a unique toplevel
Changed vic code to work with this modification.

[TLT] Fri Jan 9 13:05:47 GMT-8:00 1998

major code cleanup: removed most of the uses of the global mb array and [Application instance].
added zoom dropdown in mb and new zooming features: fit width, fit height, custom scales etc.
removed mb(debug) call from MBBaseRcvr, it gets the debug object from the manager instead
several classes renamed to reflect its association with mb
new class: MBPageMgr that controlls page switching

[SM] Thu Jan 8 02:10:07 PST 1998

Added a couple hooks to caster for retreat demo.

[ACS] Wed Jan 7 23:51:07 PST 1998

Started work on session creation/advertisement in nsdr. Some of the necessary user interface elements are in place but a fair amount of work remains to be done before it will work.
Fixed nsdr caching when using a MeGa proxy.
Replaced the listbox in the main nsdr window with a custom listbox widget inspired by the listboxes Elan wrote for megafor.

[SM] Wed Jan 7 21:58:01 PST 1998

Added ear & hand icons to Icons array for mui and updated mui/ui-main.tcl to use them rather than hard-coded path.
Added catch to mui's main to report error if no audio spec given.

[EA] Tue Jan 6 12:20:10 PST 1998

Fixed small problem with chaining gateways. Tested full demo of chaining across ISDN line.

[TLT] Mon Jan 5 16:28:51 GMT-8:00 1998

[win32] changed the error on exit message box call to MashConsoleDomodal, a new function which implements a event loop for the console window. This allows browsing of the console to continue after an error occurs. Also added code to autoscroll to the end when new messages appears.

[EA] Mon Jan 5 01:17:32 PST 1998

Changed megafor rate control to two token bucket scheme, one for new and one for old messages.

[SM] Sun Jan 4 23:25:08 PST 1998

Added copyright to lts.cc
Fixed core dump in rtp-play.cc
Added "at" method to ArchiveSystem/Play so we can schedule tcl callbacks in logical time (and used this in caster demo to sync up playback of html pages).
Added a number of temporary features to caster for demo.

[SM] Sun Jan 4 7:53:29 PST 1998

Added CastingProxy class to handle GETs for applet.html and java RemoteContoller, which gives us the bootstrap for the remote-controlled browser.
Added is_open method to TCP object.
Added an alternative API to TCP connection creation from a server. In place of create_channel, the calle can now simply specify a class that will create new instances of TCP/Client (the constructor takes the Tcl channel as its sole argument).

[EA] Sun Jan 4 17:27:45 PST 1998

Added the megatest application that simulates a MeGa client and interacts with the MeGa system.
Fixed up API to AnnounceListenManager/MeGa/Client so it doesn't depend on get_option for argument passing. This is a bad habit that shouldn't be done anyway.
Converted megafor to 'import' syntax.

[EA] Sun Jan 4 00:03:33 PST 1998

Added MeGa support to nsdr. Nsdr will now start tools in MeGa mode.

[SM] Sat Jan 3 01:49:22 PST 1998

Added some proposed changes to rtp-play.cc. I don't completely understand the current logic so I'm not sure if these changes are not compatible with the model. But, it seems dangerous to me not to look at the arg passed to getpkt(), so I put that check back in (generally, timers should be viewed as soft - when a timeout happens you take action based on the current time your read, not on the implicit time of when you knew the timer was supposed to fire.)
Added destructors to various archive objects. This allows us to deallocate recorder objects gracefully so we can re-record without exiting and re-starting.
Added a key binding for "t" to toggle video transmission in vic. This is probably a bit too dangerous (i.e., too easy to start transmitting a stream when you didn't mean to).

[SM] Fri Jan 2 22:47:09 PST 1998

Fixed up import problems that resulted from Elan's changes. Now that import allows the implementation of a class to come from multiple files, we have to be careful about how we play games with overriding methods in various classes. For example, headless vic modified various VicUI methods in certain ways, but this caused that file to be imported with normal vic. The solution is simply to avoid the use of these questionable practices... (e.g., by subclassing the classes we wish to modify).

[SM] Fri Jan 2 22:07:47 PST 1998

Simplified logic in mkImportTable to suppress redundant lines rather than output records as lists (a list is subsumed by multiple lines with same tag, different files).
Undid last rev to tcl-expand.tcl since above change to mkImportTable fixes it (rather than changing import command in tclcl as well).

[EA] Fri Jan 2 19:32:30 PST 1998

Modified mkImportTable and tcl-expand to operate on lists of files. and modified mkImportTable to output files that have just an instproc of a class defined in them.

[EA] Fri Jan 2 18:22:25 PST 1998

Fixed up problems with MeGa introduced by recent changes.
Moved run_resource_dialog to RTPApplication and deleted ui-unix.tcl and ui-win32.tcl.
Deleted mega-stub.tcl
Changes the case in tcl-expand.tcl where a class was not found in the importTable to a warning from an error since C++ classes have this property. If we come up with a common way to declare all C++ classes, we can return this to an error condition.

[SM] Fri Jan 2 14:01:45 PST 1998

Enhanced tcl-expand.tcl (and import command in tclcl) to look for modules and the importTable in the colon-separated path list specified by the TCLCL_IMPORT environment variable. If TCLCL_IMPORT is not set, then "." is assumed. This allows us to easily generate scripts outside of the mash build environment - all you need is a mash interpreter, the tcl source tree (with importTable), and a pointer into it. Note: this is not how the package is distributed but rather how we use to generate scripts.
Removed source commands in network.tcl and address-block.tcl so import from an external tree would work.

[SM] Thu Jan 1 13:31:20 PST 1998

Added a new class called ArchiveSystem (in tcl/archive/archive-system.tcl) for easy-to-use archive access
Added ArchiveStream/Record::bind to take code that used to be in init that associates the stream with a session. This allows errors to be caught and returned rather than bringing up a GUI notice (since this object might be in a gui-less app).
Changed VideoAgent constructor so it no longer needs app argument and updated all dependencies.
Ported player app to import.
Changed the way ArchiveStream class gets reparented to Observer so that we can put ArchiveStream/Play and ArchiveStream/Record in the same script.
Modified RTPPlayAgent to not allocate an application object and instead create its own Configuration object.
Changed some of the refs to Application::name_ to use "get_option appname" and updated Application::init to set this option.
Changed set-loopback to app_loopback in rtp-agent.tcl (should have done this in previous rev).
Added various copyrights.
Fixed bug that prevented record and play archive in same app.
More work on Configuration architecture. The options_ hack in tclcl was too hard to understand and explain (and caused some tcl problems for ns). So this is now removed. We were trying to do dynamic binding of the options data base so that option lookup depended on the context of where the object was created. I think we should give up since there are actually very few configuration options require this. In those cases, we should instead use a well-defined API for conveying the parameters to the underlying object(s). (The obvious example is configuring several network session objects in archive playback.) An exception to this rule is that we want to be able to associate option defaults with the classes that use them. This is easy - just put them in the class object as class variables (Yatin's suggestion). The problem is that you can't have different sets of defaults for different *instances*, but we've decided to give up on this. For example, if you say
Class Foo -configuration { opt1 val1 opt2 val2 ... }
then get_option called within the Foo class (or any sublcass) on opt1 or opt2 will return the indicated values and so forth.
Updated apps to deal with fact that options_ no longer exists by default in each object.

[YC] Wed Dec 31 17:47:56 PST 1997

Added a new MashConsole object to the WIN32 version of MASH

The object is created automatically upon startup and its name is stored in the global variable mash(console)
The following methods are defined: show, hide, toggle, set_title, set_buffer_size, alloc, and free.
Initially the console is hidden, by default. Eventually I'll add command-line flags to control the console behavior on startup
The console can be shown/hidden from the "System" menu of the main Tk window "." The system menu is the menu that can be accessed by clicking on the top-left corner of the window's titlebar. It takes about a second after the app has started for the menu item to appear in that window.

Added a new global variable mash(environ) which an app/library can use to determine what mode it is running as. This variable can have one of three values: smash, mash and mplug

[SM] Wed Dec 31 14:19:45 PST 1997

Eliminated Network::filter-own method and logic because packets loopbed back in the kernel should always be ignored (instead, the Session/RTP loopback flag should be enabled). This precludes the optimizaiton where we allow looped-back packets through and thus can turn off the session level loopback, but this is rare and only make sense for video (currently), i.e., video is the only media that loops it signal as part of the app (and that's only when there's a UI that wants to do this as in vic). This change also means that we no longer need noloopback_broken_ since we always do the filter check now (it's actually an inexpensive check). But more importantly, filtering looped back packets at the network layer simplifies the RTP loop detection code (because it doesn't also have to worry about distinguish locally looped back packets from network gateway loops). The loopback detection algorithm still needs to be re-integrated and implemented fully to spec...

[ACS] Tue Dec 30 17:14:07 PST 1997

Add provide comments to tcl/net/{al,network}.tcl so they can be imported.
Updated nsdr to use import and public/private
Added lots of comments to nsdr to match what otcldoc is looking for.
Implemented simple caching in nsdr (not working quite right yet)

[SM] Mon Dec 29 10:47:11 PST 1997

Fixed bug with calling conventions of trigger_idle, noticed by Teck.

[SM] Sun Dec 28 15:11:43 PST 1997

Added a bunch of import commands to bring rtsp server into alignment.
Changed rtsp server to use TCP OTcl class rather than C++ objects and renamed the TCPServerManager/RTSP class as RTSPServerManager. Also, moved RTSPServerManager from server-manager.tcl into server-rtsp.tcl since it's now quite small (and deleted former).
FIxed some bugs in HMSP_Application and added needed methods. App/RTSP_Client API needs more refinement.
Added tcl channel argument to TCP/Server::create_channel since it's convenient to have (e.g., to lookup the peer name).
Arranged for rtsp server and client to leave the TCP socket intact rather than tearing it down on every transaction.
Added a "wait" method to RTSP_Client that allows the callee to block until the RTSP protocol enters the specified state.
Changed message boundary convention in the server from two blank lines to one.

[SM] Sun Dec 28 01:15:37 PST 1997

Changed RTSP server to return "not found" error code rather than "internal server error" when directory and/or file does not exist.
RTSP_Client::handle_reply method since it is no longer used and moved socket close call in client-rtsp.tcl out of otherwise side-effect-free parse routine.

[SM] Sat Dec 27 23:24:34 PST 1997

Created a headless variant of msp called hmsp and put it in tcl/hmsp. It's a bit easier to test the rtsp client/server by tweaking scripts compared to bringing up a GUI. This is just a rough start...
Changed name of RTSP_Client_Application to MSP_Application since the former is too general.
Moved UI code out of client-rtsp.tcl and into application-msp.tcl since the latter should be UI-independent (and runnable with smash).
Added imports and copyright to tcl/ui_tools/ui-msgbox.tcl.

[YC] Sat Dec 27 23:12:37 PST 1997

Added a public instproc channel to the TCP class

[SM] Sat Dec 27 21:57:13 PST 1997

Reorganized file layout:

Moved all core rtsp files to top-level tcl/rtsp directory.
Moved msp files to new app directory (tcl/msp)
Moved rtsp server files to new app directory (tcl/arms) and renamed it arms for "ARchive Media Server".
Moved rtsp util procs from desc-sdp.tcl to tcl/common/util.tcl

Added a script in tcl/demo/webreplay that can take the output of mc's proxy dump and replay a web surfing session (this serves as a building block for syncing web-based presentation with the mash archive system).

[SM] Sat Dec 27 21:24:27 PST 1997

Added a hook to the mc proxy that allows web activity to be dumped to a tracefile so it can be re-played (and synced with the archive system).
Added a missing import directive to tcl/common/observer.tcl.
Removed obsolete files from mash-1/mc.

[SM] Sat Dec 27 02:03:23 PST 1997

Added a few hooks to mc so that the webcache is now fully built and maintained. Moreover, the proxy consults the cache before fetching the page from the origin server. Working out these details served as an instructive stress test for the SRM API, since the contraints are substantially different than wb... we should keep this in mind for the v2 API.
Added a bunch of ugly hacks to mc to work around the fact that OTcl methods can't take binary strings as args (because OTclDispatch builds a string-based argv). The long-term solution is to fix OTcl...

[SM] Fri Dec 26 22:35:57 PST 1997

More cleanup of mc/manager.cc and several tcl bugs to make so that it now seems to be working at some level. In particular, large files and images work. However, the srm session doesn't quite work right (upcalls from the session, in particular, are not fully implemented).
Note: added a hook to TCP class to work around fact that OTcl methods cannot take binary strings even though tcl now supports this. See the method called TCP::send_data in net/tcp.tcl.
Added TCP::set_binary method to turn on binary mode for sockets (i.e., no newline mapping).

[SM] Fri Dec 26 19:11:09 PST 1997

Modifed mc to use TCP/Server rather than C++ code.
Integrated multiple .cc and .h files from mc SRM code into a single file. Adding support for properly spooling large files and created a data structure (CacheBuf) to hold onto the pages entered into the SRM session. Further modularized some of the tcl routines to make re-use easier.
Removed mc/http_client.cc and mc/http_client.h as they are now unnecessary (and we're never working anyway).

[YC] Fri Dec 26 17:24:09 PST 1997

Moved the definition of NDEBUG from mb.h to configure.in.head, so it would get defined uniformly across all files
Updated handoffClient to use Tcl's built-in process-redirection (using "open") instead of redirect_exec_cmd. This code hasn't been tested yet.
Fixed some header filename changes related to MPlug.

[TLT] Wed Dec 24 20:08:36 GMT-8:00 1997

[win32, video] video-win32.cc: changed video-win32.cc to use VideoDevice instead of input device. It now compiles and appears to behave same as before.
[win32] makefile.vc updated to use tcl-expand and grabber/* updated to video/*
[main] tcl-expand.tcl/mkImportTable updated to work for classes that span multiple files (this is not tested yet). Removed dependency to "cat" command since it does not work in tcl. New import stuff now runs in win32.
[mb] updated modules to use import.
[mega] added import Timer/Adaptive/ConstBW to mega/al-mega.tcl

[SM] Wed Dec 24 15:27:33 PST 1997

Made a few descriptive name changes to some of the mc classes and methods so I could follow the logic more easily (I kept confusing the server, manager, and client...)
Ported mc to "import" framework. (Remember to run "make import".)
Added some more copryrights.
Somehow rtsp mods described in my last rev weren't committed; they are commited here.

[SR] Wed Dec 24 14:20:11 PST 1997

Fixed a typo in tcl-expand.tcl

[SM] Wed Dec 24 01:32:06 PST 1997

Added OTcl TCP classes that are simply OTcl wrappers for Tcl's socket command. See tcl/net/tcp.tcl. This class subsumes existing C++ modules that do the same. These sockets can be easily used from C++ by simple passing a Tcl channel ID to whatever object wants access and using the standard Tcl channel API.
Modified tcl/rtsp/msp/client-rtsp.tcl to use the new OTcl TCP class. This eliminates the need for rtsp/client.*, so these files have been deleted (note that they are still retrievable from the repository if needed). Updated Makefile.in to reflect this change. We can also easily eliminate the C++ server code for rtsp, but this hasn't yet been done.

[SM] Wed Dec 24 00:33:37 PST 1997

Added a few copyright notices.
Moved an RTSP_Client method into client-rtsp.tcl from elsewhere.
Added some needed provide hooks
Added missing import commands to several rtsp modules.

[SM] Tue Dec 23 16:58:07 PST 1997

Ported audio-voxware.cc to the latest Audio API.

[SM] Tue Dec 23 23:32:20 PST 1997

Fixed up more of the import lines for rtsp. Converter the rtsp server to use import.
Added some hooks for dmalloc, ifdef HAVE_DMALLOC. Should integrate configure.in.dmalloc from vint project. Currently you have to turn this on manually by editing the Makefile after running autoconf.
Added a #provide tag to mkImportTable. Maybe just add proc?

[SM] Tue Dec 23 16:09:31 PST 1997

Fixed Vic/VatApplication so they create toplevel windows with unique names (and thus avoid collision when embedded in same app).
Deleted global fatal, warn, and debug procs and replaced with new Log class. Added Object::fatal, Object::warn, and Object:debug so any mash object can call these methods in itself. They end up calling the Log class but they could be overridden at some point in the future so that logging can be specialized on a per-object basis.
Changed a bunch of calls to warn etc to use $self. Also, replaced these calls with return values of errors where it made sense, e.g., in AddressBlock class and install-key.

[SM] Tue Dec 23 14:54:09 PST 1997

Moved tcl/hmsim to sim/hm since these scripts are not part of the code and they interfere with the importation process.

[SM] Tue Dec 23 14:36:54 PST 1997

Converted RTSP client code and msp application to latest Application API and "import". But, not all of the modules import correctly yet...
Converted player and recorder apps to latest Application API.

[SM] Tue Dec 23 13:43:15 PST 1997

Fixed up most the apps so they now work with Configuration::parse_args etc.
Updated tcl/demo/simple-vid.tcl.
Upgrade vat to use import.

[SM] Tue Dec 23 12:20:01 PST 1997

Moved argument processing hooks from Application class to Configuration class.
Changed the Application constructor to create a default options_ object so each application subclass need not bother.
Moved resource method for backward compat from Application to Object class.
Updated vic to reflect the new API. The remaining applications are currently broken! Will fix in the next rev.

[SM] Tue Dec 23 01:09:58 PST 1997

Modified tcl-expand.tcl to work with new import commands. So make "vic" etc. should now do the right thing even for the import-oriented apps.
Removed a #Class comment from the rtsp code since it confounded importTable construction algorithm.
Speeded up mkImportTable somewhat by using ifelse.

[SM] Mon Dec 22 19:20:09 PST 1997

Added many import commands so mui now works more or less using import instead of source (and sob should mediaboard, but I haven't tested it).
Upgraded mkImportTable to look for photo images and "package provides" commands.
Added copyright headers to some of the ui_tools modules.

[SM] Mon Dec 22 19:20:09 PST 1997

Ported enough of mui module to new APIs so that it at least comes up a lets you draw on the whiteboard. There are still quite a few loose ends.
Changed Dialog class name in ui-tk.tcl to "ErrorWindow" since it conflicted with the class of the same name in ui-dialog.tcl.
Minor fix to rtsp server.tcl to conform to new Application::init args.

[YC] Mon Dec 22 15:22:42 PST 1997

Completely revamped the mash plugin, MPLUG
New version uses sockets instead of pipes for communicating with plugin process. This makes porting to Windows easier
Uses Tk8.0's -use mechanism to embed the main Tk window inside Netscape
Modularized the platform-specific pieces of the plugin. Added new hooks for porting to Windows.
The Windows port is not done yet
The plugin still needs some more refinement. Need to add the hooks to allow looking for the rc file in the appropriate locations.

[SM] Mon Dec 22 10:59:29 PST 1997

Integrated Cindy Romer's mash scripts for the integrated mediaboard, video, and audio UI. This new files reside in tcl/mui/*.tcl. They've only been partially ported to the new Applicaiton and VideoAgent APIs (i.e., it doesn't run yet).

[SM] Mon Dec 22 02:38:25 PST 1997

Added support for a simple, java-like import command to tclcl and merged it with vic and all of vic's modules. By default, import directives are ignored so as to not break existing apps. "import" behaves like the tcl source command except it includes the file only once (even when used multiple times) and the OTcl class name is specified instead of the actual file. To facilitate this, import assumes the existence of a file called importTable that contains the mappings (... maybe this should be built on demand). mash-1/mkImportTable creates this table from a list of tcl input files.
Once we fully switch over to "import", we will have to change tcl-expand.tcl to follow import commands rather than source commands.

[EA] Mon Dec 22 01:29:08 PST 1997

Added proc names to tcltags.

[SM] Sun Dec 21 23:25:24 PST 1997

Pretty massive reorg of VideoAgent. Created finer grained decomposition with compression pipeline and capture device split out into separate objects. Created a video directory in the source tree and moved created video/pipeline.tcl.
Updated the vic user interface code to reflect new video pipeline breakdown.
Fixed a few bugs here and there.
Moved classmap_ hooks from VideoAgent into RTP/Video class so they can be shared with VideoPipeline.
Ported video-vfw.cc to new VideoCapture API, but haven't compiled or tested yet.

[EA] Sun Dec 21 18:22:58 PST 1997

Fixed small typo bug in RTVC video capture.

[SM] Sun Dec 21 16:19:44 PST 1997

Changed ifdef hooks in C++ header files to use "mash" prefix rather than "vic" or "vat" since these modules are now re-useable across different applications.
Removed conf/configure.in.grabber since it's now subsumed by configure.in.video.
Removed all files in grabber sub-directory since they are now subsumed by the ``video'' modules. In particular, removed old grabber-file directory since this is subsumed by the archive system.
Removed old jvdriver stubs since MME should take care of any DEC video capture support (though it doesn't currently work against the new mash code base).
Removed source code files for rtpv1, nv, and ivs sessions since we no longer intend to support these obsolete protocols.

[SM] Sun Dec 21 15:37:14 PST 1997

Added a Device object to make it easier to add class methods for querying hardware attributes. Currently, just used by video devices but could easily be used by audio as well (but, for audio, we haven't needed the trick where modules query device attributes before creating object instances). Converted a number of previously global procs to Device methods.
Finished copying all supported video capture modules from the grabber sub-directory to the video sub-directory. But, haven't ported all the modules yet and probably won't port them all for some time (probably on an "as needed" basis).

[SM] Sun Dec 21 10:51:14 PST 1997

Renamed video capture API to replace unqualified names that were a vestige of the assumption in the original vic code that these modules were implicitly part of a video application. This breaks all of the grabber modules (which are also in the process of being renamed and moved from grabber/grabber-*.cc to video/video-*.cc). grabber-meteor.cc is the only module currently brought up to date.
Made some small (but incompatible) changes to the way device classes are created and attributes thereupon are queried.

[SM] Sun Dec 21 01:05:36 PST 1997

Minor changes to VideoAgent API to adopt underscore vs dash identifiers.
Added documentation for most of the VideoAgent methods.
Changed set-maxchannel to set_maxchannel, which impacted most all of the ``agent'' modules.

[SM] Sat Dec 20 15:35:20 PST 1997

Fixed bugs in the audio device arbitration code.
Yet another round of updates to the Audio API. This is probably the last major revision.
Moved test-tone generation and loopback switches from Audio class to Controller class.

[TLT] Sat Dec 20 00:12:12 GMT-8:00 1997

[mb] Changed quite a number of functions to lower-case to conform to conventions.
[mb] Added a Pkt_RcvrInfo packet at the end of session announcements to indicate current page.
[mb] merged start_action/source_action calls to activity changed tcl code to handle these new calls for the activity banners.
[mb] Added online time-browsing to mb. This is the reason for adding the reverse methods in mb-cmdexec.cc. New MBTime definitions declared in mb-time.h
[mb] Lots of UI changes for new features, also done some code clean up. New Icons/images added.
[mb] first cut at loading/saving of mb presentation format (doesn't quite work yet).
[archive] added archives files to win32 target, changed the header files and some code (minor) to make them compile.
[archive/mb] updated files to relect mb changes.
[archive] added some minor changes to catch up with Steve's changes to make things work again.
[archive] win32 status: records and plays, but out-of-sync of mb with the rest.
[tgmb] changed startaction to activity call and updated executecmd call to use new parameters. It compiles but not tested yet.

[EA] Fri Dec 19 15:07:41 PST 1997

Fixed RTP defaults dialog boxes to use new .mash/* files.
Fixed small bugs in 'Dialog' class.

[EA] Fri Dec 19 11:29:14 PST 1997

Fixed up MeGa components after Steve's latest mods to RTP objects.

[SM] Fri Dec 19 00:44:16 PST 1997

Fixed up the SUNAudio class to conform to latest OTcl Audio API. It now compiles but hasn't been tested.

[SM] Fri Dec 19 00:13:10 PST 1997

Split the RTP helper class into RTP/Audio and RTP/Video because the payload type codes can overlap and the previous code would otherwise break when that happens. Updated all classes that used the old RTP class to use one of the new ones. Unfortunately, this breaks mbgw because it uses RTP for some reason.
In audio-agent.cc, replaced rtp_type global variable with use of RTP/Audio class, and replaced dmap global with classmap_ instance variable.
In video-agent.cc, replaced rtp_type global variable with use of RTP/Video class, and replaced dmap global with classmap_ instance variable.
Updated several OTcl method names to use underscore rather than dash to conform to coding conventions.
Documented a number of methods in AudioAgent, but not quite finished yet.
Updated audio-freebsd.cc to conform in part to mash coding conventions.
Ported audio-sun.cc to new OTcl API for Audio class. Still need to test this.
Removed a number of obsolete hooks from Audio C++ class.

[SM] Thu Dec 18 15:54:01 PST 1997

Made a bunch of changes to the Audio C++ class to bring it into conformance with the mash coding conventions. Also, cleaned up the API to better match the OTcl split-object programming model. This eliminated a bunch of unecessary C++ code that dates back to the earliest versions of vat.
Documented the C++ method API to the Audio class.
Removed echo cancellation filter hooks, since it will be a while before we get this to work and the hooks that were there are rather trivial.
This rev breaks most of the audio modules (except for freebsd). We'll need to fix up these other modules in subsequent revs.

[SM] Wed Dec 17 21:24:29 PST 1997

Added a make rule for otcldoc... "make doc".
Documented rtp/source.cc according to new otcldoc C++ commenting conventions.

[SM] Sun Dec 14 20:40:22 PST 1997

Fixed up webcast hooks in application-mc.tcl to deal with new Application::reset API. Note that this will change again in the near future anyway.

[SM] Sun Dec 14 20:16:24 PST 1997

Finished integration of first version of Configuration class and made major changes to the Application base class API to reflect this. Updated most of the application classes to use the new approach, but did only limited testing. A few of the apps do not work. Many all of the old-style X resources don't work, and instead, we are moving to a model where user preferences are stored in a configuration database in $HOME/.mash. This makes the reliance upon this type of configuration less critical and thus easier to move across the windows/unix barrier. For example, the configuration file could be built from the software setup phase in windows (e.g., netmeeting, placeware, etc all do this).
Documented most of the Application and VicApplication methods for mashdoc. Converted many methods from instproc to public/private, but we still have a long way to go.
Started to convert Application::init_local to Application::load_preferences but the transition is not yet fully complete. load_preferences loads various options info from ~/.mash/prefs*.
Removed the -u flag from all apps and the -A flag from vic.
The player/recorder apps currently violate our new model because they create multiple application objects. This should be relatively easy to fix with the more flexible Configuration class.
Changed syntax of nsdr -prox and -sap flags to better match the new command-line processing algorithm. The old syntax:
nsdr -proxy a -proxy b -sap c/d -sap e/f
is replaced with:
nsdr -proxy a:b -sap c/d:e/f

*HandoffClient X resources will no longer work.

[SM] Sat Dec 13 21:22:18 PST 1997

Integrated first cut at Configuration class, which is a new abstraction that gives us a front-end to the tk options database and works around its many problems. In particular, the tools will no longer need a -name argument to run correctly (which makes it easier to run mash scripts off a web server).
Updated vic to use Configuration class. This needs quite a bit more work.
Changed a bunch of calls to the global "option" command to "$self get_option" so that the Configuration class hooks would work.
Deleted the Applicaiton::media_ instance variable since it's not used anywhere and doesn't belong there anyway (i.e., an application can have multiple media).
Renamed the RTP source/agent methods so that they follow a cleaner syntax. Various events are now thought of as triggers that can be enabled or disabled (but enabling/disabling is only implemented for the media trigger thus far).

[SM] Sat Dec 13 18:52:25 PST 1997

Fixed mashdoc to separate public and private methods.

[SM] Sat Dec 13 16:14:13 PST 1997

Added support for public/private to tclcl and mashdoc. Mashdoc still needs to be refined to partition private/public methods into separate sections of the web page.
Updated a couple classes with new private/public method hooks.
Added comments to most of rtp agent methods.
Changed "set_busy" API on RTP agent to a "data trigger" and updated all tcl scripts to reflect the change.

[TLT] Sat Dec 13 14:42:50 GMT-8:00 1997

[win32] fixed misc.cc (RedirectExecCommand) to compile under win32 (basically commented the functionality for now, since pipes in win32 is different (?) )

[EA] Thu Dec 11 17:44:14 PST 1997

Added SAPAnnounceListenManager class for SAP encapsulation and made AnnounceListenManager a generic class for string-based announce/listen protocols.

[EA] Thu Dec 11 16:16:10 PST 1997

Fixed bug where vgw wasn't rate limiting sessions that were globally controlled by scuba.

[TLT] Thu Dec 11 13:04:52 GMT-8:00 1997

[mb] add new image for mb
[win32/grabber] fixed grabber-win32 so that it supports ISVR3 (it does not like the 'generic' driver's way of emulating through all the RGB formats, plus we want to use YVU9 anyway, so I added a new win32 device type 'Intel_SVR3'. With this, I can capture, but it blue screens after a while, possibly because of conflicts with my S3 driver.

[SR] Wed Dec 10 17:19:04 PST 1997

Added remote audio/video playback in MASH using RTSP. Player has simple navigation and annotation features. An announcement of the exact location of the MASH multimedia archive will be posted at soon.
Checked in srmv2 files. Not ready for use yet.

[EA] Tue Dec 9 14:08:56 PST 1997

Added support to MeGa gateways to enable "chaining" of gateways. In this model, host managers are boundaries between gateway scopes defined by the control channel. The configuration of the host manager topology is done by a configuration file mega.conf.
The degenerate case of this chaining is also the common case where a single instance of MeGa is deployed at the "edge" of the global MBone, i.e., only one "link" in the chain.

[SM] Sun Dec 7 21:22:48 PST 1997

Added logic to mashdoc to read individual otcl source files instead of stdin, and produce htmlized source code templates with anchors. Modified method names to point into this reference source code.
Added hooks to mashdoc to create links to subclasses (in addition to superclasses).
Added index.html generation capability to mashdoc.
Fixed up a few of the OTcl modules with comments that came from the web pages in www-mash.

[SM] Sun Dec 7 16:31:02 PST 1997

Added a script for transforming OTcl class definitions and structured comments into html documentation. The script, inspired by javadoc, is called mashdoc and resides in the top-level directory. It's still pretty rough and buggy, but shows promise.
Changed a few of the source files to adhere to mashdoc conventions. Lots more work needed here.

[SM] Sat Dec 6 22:12:16 PST 1997

Fixed configure script to search paths in forward rather than reverse order. In particular, ./configure now grabs ../tcl over /usr/local/lib.
Added reset_spec method to RTPAgent and un-do recent change that broke vic/vat (i.e., inconsistencies in when to use address-block objects versus textual specs).

[TDH] Fri Dec 5 18:33:14 PST 1997

(acutally previously) Added tcl/handoffClient and tcl/handoffServer dirs. Web page available under software/local.
Added handoffClient and handoffServer to Makefile.in. handoffServer as a smash tool.
handoffClient now supports FreeBSD, BSDI, Linux, and Win95

[LKW] Fri Dec 5 12:46:59 PST 1997

[mc] Switch to tcl8.0 http libraries.

[ACS] Sun Nov 30 19:27:01 PST 1997

Added an initial snapshot of nsdr - a session directly tool built with mash.

mash-5.0a9 (no public source release): Sun Nov 30 18:04:43 GMT-8:00 1997

[TLT] Mon Dec 1 11:49:46 GMT-8:00 1997

[win32] fixed compat/runtool.c so that things will work when mash is installed in a directory with spaces in it.

[TLT] Sun Nov 30 18:02:39 GMT-8:00 1997

[win32] add optimization pragma around a section of code in render/color-hi.cc to disable optimization. It was causing colors to be displayed wrongly in 16 bit color mode.

[TLT] Sat Nov 29 17:30:10 GMT-8:00 1997

[mb] mediaboard now shows tooltip at the location where new items are being drawn. When out of the page, the tooltip shows up next to the nearest border.

[TLT] Wed Nov 26 14:31:15 GMT-8:00 1997

updated some of the mb macros
add moving owner tips when a new item is being added

[SR] Wed Nov 26 12:06:28 PST 1997

Changed the startup file name from $name_.tcl to have a preceeding '.' This won't cause problems with vic/vat/mb.tcl, which are quite unique. But spurious client.tcl, player.tcl, recorder.tcl files are more likely.

[TLT] Mon Nov 24 15:00:20 GMT-8:00 1997

[srm/mb] Changed all references of MBBaseMgr::pSession_ to use session() of SRM_AppMgr, since there is no point in duplicating the field.
[mb] Add capability of MBCanvas to remember which command each canvas item is associated with. This is used e.g. to locate the owner of each items on the canvas.
[mb] Fix spurious screen updates due to extra reconfigurations of the scroll region. Add code to remove redundant StartAction() upcalls within 200ms. These fixes improves performance for freehand drawings.
[mb] Add tool tips like feature to show owner of items.

[TLT] Mon Nov 24 16:50:47 PST 1997

[hvic] create controlMenu_ since transmitOnStartup requires it.
[hvic] adds "$self periodic_update" call in (headless) VicUI since this is needed by scuba?
Add hvic to Makefile.in TOOLS line.

[EA] Fri Nov 21 16:36:51 PST 1997

Added a 'bye' message to MeGa agents for synchronous terminations. This improves performance greatly in that the state of the system in the common case becomes consistent much faster.

[EA] Fri Nov 21 10:56:13 PST 1997

Fixed small problems with vic and vat confbus code. Vic still needs pass, but at least the errors are taken care of.
Disabled outputMuteButton check so error doesn't occur. XXX This needs to be fixed!

[EA] Thu Nov 20 16:22:46 PST 1997

Commented out sparc asm implementation of random() function since it was causing a seg fault. Problem is probably in other part of code, but for now - use c implementation.
Added noLoad flag to hm and rcmd for alternate remote exec command (e.g. ssh).

[LKW] Thu Nov 20 13:23:10 GMT-8:00 1997

[mc] adding in the MASHCast sources to help assist me in developing and debugging in different sites. The app isn't ready to run. The only common file modified was Makefile.in.

[TLT] Thu Nov 20 10:55:15 GMT-8:00 1997

[vat] deletes VatUI before quiting, and deletes sitebox in VatUI destructor. This allows the font acquired by SiteBox to be freed in its destructor.
[vat] misc/sitebox.cc: moved some static variables of Site to SiteBox. This fixed a bug whereby the former Site::tkfont_ is freed multiple times by each Site destructor.

[SS] Thu Nov 20 09:06:28 PST 1997

Made changes so that mash would compile on AIX. Audio currently works on AIX. I will incorporate the vic 2.8 AIX grabber code later. Only changes that are not #if defined(_AIX) are changes to linkedlist.h and including in a few files.

[EA] Tue Nov 18 13:56:28 PST 1997

Fixed memory leak in GSM decoder.

[TLT] Sat Nov 15 17:17:54 PST 1997
Win32 changes.

changed code so that we can compile with static tcl/tk libraries. The flag is: STATIC_TCLTK and there is an entry in makefile.vc that toggles it on/off. Note that to use this, you will have to update to the newer mash version of tcl/tk.
fixed the console code (forgot to load in et_tk into the console interpreter).

[SM] Fri Nov 14 10:56:11 PST 1997
Bug fixes from Chad F. Jones:

Bug: unable to disable encryption once enabled. This was addressed by modifying "NetworkManager set_key" in tcl/net/network.tcl so that it checks to see if key_ is blank. If it is blank, then encryption is turned off. This is consistent to the calls made to set_key elsewhere in the source code.
Bug: unable to switch types of encryption once one is used. This was addressed by adding a fmt_ variable to NetworkManager in /tcl/net/network.tcl; and checking to see if fmt_ has changed with each call to set_key. If the fmt_ has changed, then a set of new crypt objects is created with the new fmt.
Suggested change: slightly enlarged buffer in net/net.cc for decryption. This is a suggested change based on my work with crypt objects. Sometimes the decrypted size is slightly larger than that allocated by the network object. Basically, the change is just always making the buffer 8 bytes larger than necessary when decrypting. The additional memory isn't significant and this small change makes the code more robust when different crypt objects are added to the code base.

[EA] Mon Nov 10 16:34:48 PST 1997

SourceAgent -> MediaAgent in rtpgw.

mash-5.0a8 (no public release): Mon Nov 10 14:47:18 PST 1997

[SM] Sun Nov 9 17:35:46 PST 1997

Fixed conditional replenishment bug. CR_AGETHRESH was too big and had interfered with the CR_MOTION_BIT causing the CR FSM to wedge in a state that prevented blocks from being sent as background. Changed CR_AGETHRESH to 15 and added warning about making it bigger.
Added MB_DEBUG wrappers where needed in mb-cmdexec.cc.
Removed a bunch of dead code. In particular, the unused CR logic that moved from grabber.cc into crdef.cc.
Changed name of SourceAgent tcl object to "MediaAgent".

[TLT] Sun Nov 9 01:58:11 PST 1997

COMPATIBILITY NOTE: this changes require Tcl 8.0 above to compile!
fixed mb bugs when an operation (like scribbling) is interrupted in the middle
added bindings to paste text into mediaboard.
adds scaling to mb. note: images and postscript (?) still does not scale.
change the mb command execution to be more tolerant of unusual packets (i.e. prints to stderr instead of aborting as far as possible)
fix memory corruption bug due to spurious deletes in Page::CancelRequest (this bug manifests itself only after a long timeout and crashs the program)
changed the way tools are being invoked, hopefully this gives a more generic and clean way to structure the tools. Page actions and menu invocations now pre-empt the current writing mode by "deactivating" it. (see ui-mbtools).
more whitespace diffs + lowercasing of function names

[EA] Thu Nov 6 19:49:01 PST 1997

Added LDCT to vic UI. It still needs some work (along with general support for layered codecs in mash), but the codec is there, so it may as well be integrated in. In the interest of stability, it is disabled until further testing can be performed.

[EA] Thu Nov 6 16:37:03 PST 1997

Fixed bug in audio-voxware.cc which was causing BSDI audio to not work. Still need to get mixer to work, but audio works now.
Fixed half-duplex audio device controller.

mash-5.0a7 (no public release): Mon Nov 3 20:28:09 PST 1997

[EA] Fri Oct 31 00:39:39 PST 1997

Added backward compat for vic -B flag. (kb/s units vs. b/s units in mash).

[TLT] Thu Oct 30 18:51:51 PST 1997

whitespace diffs (I tried to put all whitespace diffs in a separate
win32: link with msvcrtd.dll if compiled with debug. This is the debug version of the (MSVC's) standard C runtime library.
fixed pasting problems with MediaBoard (it was inserting control characters)

[EA] Thu Oct 30 18:25:03 PST 1997

Another pass on kbps -> bps. Lots of fixes. Almost all there.
Fixed bug in RTVC grabber in bps frameclock adjustment since it doesn't use base method.
Fixed several small bugs in vgw/scuba. Vote calculation was wrong in the event of a transmitter on a scuba controlled session.
Fixed up MeGa behavior. Changed time constants, backgrounded 'rsh'.
Got rid of repid in SCUBA and cleaned up session-scuba.

[YC] Thu Oct 30 11:25:07 PST 1997

Fixed the meteor grabber code for Linux. It almost works now, except that, at times the video freezes. The only way to get out of that mode is to quit vic and restart
Added libmash.so and libsmash.so targets to the Makefile. Added a new file configure.in.dynamic to set up the right flags/config options for dynamic linking on the various platforms. Grabbed code from Tcl7.6's configure.in script for this purpose. You need to explicitly enable this feature by using the -enable-shlib configure flag

[EA] Tue Oct 28 16:05:02 PST 1997

Fixed problem in SunAudio which was caused by the fact that tcl.result() was being passed around as a pointer and then was overwritten by the interpreter. As a result - no sun audio device was opened.

[SM] Mon Oct 27 21:59:02 PST 1997

Added check to "local" method of SourceTable object to raise an error if local-src pointer is not yet set. Bug reported by Bill Fenner.

[TLT] Mon Oct 27 19:12:37 PST 1997

changed looks of mb a little bit
reinstate the scrollbars and set -confine true so that we scan scroll beyond the canvas.

[EA] Mon Oct 27 17:14:05 PST 1997

Randomized target check time in Host Managers.

[EA] Mon Oct 27 15:39:13 PST 1997

Added UNIX tk8 overwrite for Tk_PlatformInit which is now TkpInit.

[TLT] Sat Oct 25 19:59:39 PDT 1997

change fonts again to make it look right on unix (use back pixel fonts).
add more code to free objects on exit.

[TLT] Fri Oct 24 18:58:30 PDT 1997

fix srm rate limiter problems (it wasn't working). Limit is now 16 kBytes/sec i.e. 128 kbits/sec.
changed mb code to use the "nextSize" parameter in the next_ADU calls.
begin_xmit in SRM will now schedule an event rather than call next_ADU immediately when there is enough bytes in the bucket.

[TLT] Fri Oct 24 18:08:34 PDT 1997

fix mem allocation/free bugs in tkscriptchart for tcl8
fix tkwidget memory bugs: when a window is destroyed, tk_ structure is freed. The check for Tk_Ismapped(tk_) thus might have unpredictable results. I added a new flag isDestroyed_ to avoid such checks. Similar problem in vw.c
change font names for tcl 8
fix mb so that everything gets freed when $mb(mgr) exit is called. This is need to free all the fonts so that TkPkgFont... does not panic.
add cut and paste to mb
generate OTcl code clean up in mb plus objectification
change join style of multi-lines in mb-canvas as well as fix image unerase bug (add -anchor params).
fix mem allocation/free bugs in mb-items.

[TLT] Fri Oct 24 12:32:03 PDT 1997

audio-freebsd.cc: changed line-in to line-in 1 instead of line-in 2
audio-freebsd.cc: change printfs to perror so that we can see the errors when they occur
fixed typo in agent-audio.tcl

[SM] Thu Oct 23 14:23:14 PDT 1997

Removed obsolete code from controller.cc (idle_hold_time is handled now completely in tcl).
Fixed bug in audio-freebsd.cc and audio-voxware.cc that caused mike and speaker gains to be successively reduced each time the audio device was "obtained".
Fixed bug that allowed audio device to be released when audio test tone was in progress. Also, added a hook to request the audio device when the user invokes an audio test from the control menu.
Removed tcl/vat/ui-resource.tcl since it's no longer used.

[SM] Fri Oct 17 22:19:05 PDT 1997

Updated configure script and Makefile to use TclCL rather than old "Tcl" module.
Integrated Luigi Rizzo's FreeBSD audio driver. This fixes many of the clicks and audio breakups from the stock freebsd voxware audio driver. The new module is called audio-freebsd.cc since it's not fully compatible with the voxware API. See Luigi's FreeBSD web page for instructions on installing his audio driver in your kernel.

[EA] Thu Oct 23 10:59:56 PDT 1997

Added a hostname lookup in AddressBlock so that hostnames cab be specified instead to IP addresses.

[EA] Wed Oct 22 17:22:27 PDT 1997

Fixed SCUBA computation of zero-weight sources to not include non-zero sources in computation

[EA] Wed Oct 22 14:49:36 PDT 1997

Moved bandwidth units in grabber, transmitter and session-rtp to be bit/sec rather than kbps. This should prevent the "0" bandwidth problems with SCUBA which were caused by a combination of the coarse granularity (1kb/s) of the bandwidth adjustments along with a desire to truncate rather than round in the computation so as to under-allocate bandwidth rather than over-allocate.
Note: Since this change has been made to some of the most senstive code in mash, in particular the bandwidth computations in grabber, sesison-rtp, tranmitter, agent-rtp and agent-video, if there are problems - this is the first delta to look at.

[EA] Wed Oct 22 00:13:13 PDT 1997

Completed distributed host manager deployment on NOW using glunix tools to determine least loaded machines for deployment.

[EA] Mon Oct 20 20:46:34 PDT 1997

Polished up distributed Host Manager. Tested it on NOW. Added initial glunix support.
Added "death" packet to hostmanagers and gateways that can be fired off from mgamon.

[EA] Mon Oct 20 12:36:34 PDT 1997

Made AnnounceListenManager generate a message immediately upon creation (rather than waiting an initial startup timer). This improves latency in "learning". This minor change had several effects on the various MeGa/SCUBA tools since creation of things had to be reordered so that the state got initilized appropriately.
Added MeGa timeout to rtpgw when used in MeGa operation rather than using the RTP BYE packets to kill the gateway. This prevents the case where a MeGa client is up and there are no global sources - then the rtpgw just kills itself but then the MeGa client restarts it.
Enabled initial active_check in mbgw and sdgw. This was commented out - don't remember why. Seems like there has to be an initial "alive" check.

[SM] Fri Oct 17 22:19:05 PDT 1997

Added hook to tag otcl classes for "ctags" make rule.
Plugged memory leak in rtp-play.h. PacketModule::recv must free packet buffer.
Added a printf to RTPPlaybackStream::DoEvent to remind us to remove performance-hindering tcl upcall.
Various whitespace deltas.

[EA] Fri Oct 17 19:20:14 PDT 1997

Created first cut of AnnounceListenManager that can run using ns rather than mash. This is incredibly useful in using exactly the same code to simulate mash control agents as is run in the actual executable. An example of this is in tcl/hmsim which simulates the birth-death process of the MeGa host manager using completely unmodified code from tcl/mega and tcl/hm.
The port between ns and mash is in ns-mash.tcl which the ns version of the AnnounceListenManager is in al-ns.tcl.
There are many parts that are still very ad hoc and some which require much more work in order to make general, but the basics are there and this experiment has already proven very succesful.

[EA] Wed Oct 15 22:14:29 PDT 1997

Added option database support for smash use in common/smash-compat.tcl
Added SMASH_TARGETS in Makefile.in along with smash-head.tcl.
First version of distributed MeGa Host Manager.
Added Host Managers to MeGa monitor.
Cleaned up a bit of old scuba related tcl files.

[EA] Tue Oct 14 17:27:35 PDT 1997

Fixed command line audio format selection in vat ('-f' flag).

[EA] Tue Oct 14 12:35:05 PDT 1997

Added 'fork' tcl command.
Fixed bug in ActiveSource which did not remove info windows.

[SM] Tue Oct 14 12:35:05 PDT 1997

Fixed up headless vic so a crude prototype runs in CSCW class. Created tcl/hvic and moved correspnding tcl files there (from tcl/vic).
Fixed bug with vic -A (but haven't tested fix yet).

[SM] Mon Oct 13 22:33:21 PDT 1997

A couple minor fixes to make headless vic compile and run.

mash-5.0a6 (no public release)

[EA] Mon Oct 13 01:20:57 PDT 1997

Fixed small memory leaks in MeGa clients and gateways.

[SM] Mon Oct 13 00:45:09 PDT 1997

Recovered from disk crash that occured on Oct 10. Used Oct 2 shadow of repository along with Elan's freeze of 1.0a6 to reconstruct. Thus, revisions below that fall between Oct 2 and Oct 10 cannot be recovered by date.

[EA] Thu Oct 9 18:54:57 PDT 1997

Added SCUBA info window to vic active sources.

[EA] Tue Oct 7 21:31:53 PDT 1997

Solidified MeGa v1.1. Modified control channel to 224.4.5.24 so both 1.0 and 1.1 versions can coexist (though they are not backward compatible).
Rewrote megafor to use multiple timers and simple aging mechanism.
Fixed bug which was causing host manager clustering.
Fixed "Source/RTP srcid" bug in rtpgw.
Changed init_misc() (back) to a C++ extern. There is no need for it to be a "C" extern and other programs that use this file it broke as a result.

[TLT] Mon Oct 6 18:42:44 PDT 1997
First cut at compiling under tcl/tk 8.0.

created compat/tkcompat.* to provide tk80 functionality in tk42. These are really kludges. I assume that we will not be using them for long.
Tk_GetFontStruct, Tk_FreeFontStruct, Tk_NameofFontStruct et. all procedures are being superceded by functions of the same name but without struct. For tk42, there is a typedef of Tk_Font to XFontStruct*. Note that names of fonts under 8.0 is can be more "friendly" e.g "times 8". See tk80 docs for details.
otcl has been updated. Included patch from vint and also a kludge to prevent a memory error
All procedures with parameters named "class" will no longer work. Changed them to className. This is because OTcl pass in self and class as the parameters... to the invisible __OTclProc__.
tcl_rcFileName in mash-tkinit.cc changed from .mashrc to .mash-startup since it is supposed to be a Tcl script Vs a Xresource file.
For windows, don't hardwire vic and vat's colors for sliders.
Added --with-tcl-ver and --with-tk-ver to specify non-default version --> --numbers. The default version is still 7.6 and 4.2, to compile with 8.0, do --with-tcl-ver=8.0 and --with-tk-ver=7.6, in addition to the usual --> --with-tcl=... amd --with-tk=... --

[SM] Mon Sep 29 10:43:31 PDT 1997

Fixed bug in ADPCM decoder (virtual recv method prototype had diverged and needed to be updated).
Removed session-vat.cc since this file is now obsolete.

[TLT] Sat Sep 27 03:15:27 PDT 1997

Add printing capability to mediaboard. Note that you will need the newly patched tcl/tk to make this work.
Patched Tcl/Tk further to get rid of dependency of external files. We are down to prolog.ps, which is needed by the postscript code.
Fixed some bugs (hopefully) related to SRM_Reply/SRM_Request destruction.
split platforminit into tclplatforminit and tkplatforminit to make it work with yatin's changes.

[YC] Thu Sep 25 17:07:21 PDT 1997

Split out the tcl and tk initialization functions into mash-tclinit.cc and mash-tkinit.cc. Updated Created mash-main.cc and smash-main.cc for the mash and smash binaries
Added a toolbar object to the ui_tools library
Fixed bugs introduced my changes in the SRM API in the mb player
Added a trcExcessive flag to the mtrace flags list

[EA] Wed Sep 17 14:05:59 PDT 1997

Major revision of MeGa tools. Added header to optimize the use of the SDP parser so it does not get called. The tools run much efficiently. MeGa version is now 1.1 and is not backward compatible with 1.0 since the latter had no header. Performance is *much* better.

[EA] Wed Sep 17 10:33:51 PDT 1997

Separated different media into separate channels in MeGa since there is no need for clients and gateways agents to communicate with peers of other media and this is a performance hit if they do.

[EA] Tue Sep 16 18:42:09 PDT 1997

Lowered frequency of MeGa control messages as a short term solution since this tends to be a bottlneck in the non A/V gateways.

[EA] Tue Sep 16 15:15:08 PDT 1997

Added hooks to MeGa for setting the scope of the SCUBA messages.

[YC] Mon Sep 15 14:06:15 PDT 1997

Updated code in the mash tree to use the new calling convention for the INSTPROC and PROC macros.
Updated image2tcl, so the images are now directly named, rather than storing their implicit names in a global variable.
Added the -addstream command-line argument to the player
Added handling of SDP messages from sdr to the recorder. record_session.tcl has been updated to use the new recorder. (But there is no target for record_session in the Makefile)
Added new images to the ui_tools image library. Updated the Makefile to incorporate the new images into the ui-iconlib.tcl file.
Added a --enable-static/--disable-static argument to configure, so users with only dynamic libraries can still compile in development mode.

mash-5.0a5 (no public release)

[EA] Mon Sep 15 18:12:09 PDT 1997

Added NetworkLayer destructor and fixed scuba session reset in vic. Both bugs were causing sockets to not be closed.

[EA] Mon Sep 15 10:46:31 PDT 1997

Changed the bps() routine in grabber to decrease the latency associated with a change from a very low bandwidth to a very high one. The latency is caused by the fact that we have to wait for the previous timeout (at the low bandwidth) before the new bandwidth takes effect. This is undesirelable in situations where you want the response to be more immediate, like in a SCUBA controlled session. Basically what we do is readjust the frameclock to reflect the new bandwidth and reset the timer.

[EA] Fri Sep 12 18:28:05 PDT 1997

Removed grabber-qcam.o from build since device switching doesn't work right now in vic and qcam comes up as default over meteor.
Integrated SCUBA forwarding into vgw.
Fixed small typo bug in AudioArbiter (held_->hold_).

[TLT] Fri Sep 12 14:28:20 PDT 1997

Split up Session/SRM into SRMAgent and Session/SRM, as started by Elan's work.
Rename srm/source.{cc,h} to srm-source.{cc,h}
Add filter-own flag to SRM net ports.
Add Mega support in MB.
Changed mb archive recorder/player modules to sync up the change
Changed Makefile.in so that the link goes from mash to mash-version and not the other way round.
Add conferenceName option to mb, and a bunch of flags for future use. Synced up the changes with rsdr embedded plugin

[EA] Thu Sep 11 22:01:25 PDT 1997

Added reference counts to SCUBA focus/unfocus in vic, so that it works correctly with switcher.
Fixed bug in grabber where bad things happened if bps was 0.
Moved session bandwidth control from SCUBA into MeGa.
Fixed Vic UI so misleading "Local Bandwidth" scale appears only in MeGa case.
Made vat and vic title bars consistent in MeGa operation.
Fixed bug in Observable which caused has_method to not work if proc was not defined.

[SM] Wed Sep 10 19:09:27 PDT 1997

Fixed bug in SCUBA hook into vic windows. SCUBA should be notified where windows are attached/detached to sources rather than when the user window is first created.

[EA] Wed Sep 10 12:55:25 PDT 1997

Fixed bug in KeyEditor that for some reason crept back that caused an erroneous Crypt object to be installed.

[EA] Wed Sep 10 10:43:49 PDT 1997

Made the sequence space of all buffer pools separate. This fixed the bug in rtpgw that was causing clients to detect packet "loss" due to the fact that all rtpgw output sources shared the same seqeunce space.
Removed the "source-manager" command from BufferPool/RTP - it was doing nothing.
Spiffed up mgamon.

[EA] Wed Sep 10 01:54:55 PDT 1997

Fixed up loose ends in MeGa tools.
Added buffer pool initialization for Session/RTP.
Changed class name "Bufferpool" to "BufferPool".
Added hostnames to MeGa Monitor UI.

[SM] Tue Sep 9 11:46:29 PDT 1997

Fixed bug that caused audio format changes to fail. (VatUI::change_format needed to manipulate the underlying agent rather than $self.)
Removed stub error message for null proc (in tcl/common/tkerror.tcl) because it misreported errors and otherwise didn't really help.

[YC] Mon Sep 8 23:30:09 PDT 1997

Changes to configure:
.devel is now obsolete. Having it will still do what it always did. But you should try to get away from it.
The following flags have been added:

-enable-debug: adds the -g flag to gcc, defines the various macros required to turn on debugging and "mtracing" -enable-release: use this flag for a release build. This forces a -static link for all platforms except linux and adds the necessary flags for linux to get the release binary to build correctly -enable-devel: encapsulates the behavior of the .devel file. Automatically includes -enable-debug as well.

Now that the .devel file has gone away, there is a new "more general" mechanism to specify a set of default options. Simply include a .configure file in your toplevel mash-1 directory and put in all the command-line options to configure on the first line of that file. configure will automatically read them in. The "only" caveat is that if there are spaces within a command line arg, that won't quite work.
Moved mash-specific configuration code to a new file, configure.in.mash.
The Linux release build is now automated. The -enable-release flag does the right thing. You do need static versions of all libraries, though, to be able to make a release build of the Linux binaries.

[SM] Mon Sep 8 15:31:49 PDT 1997

Fixed bug in encryption key entry widget that crept in with recent change to Entry::update method.
Changed $self::encryptOn_ to a tkvar.
Eliminated last vestiges of V(class) and V(app).
Removed version procs everywhere (mostly in various main.tcl's) and added a single version proc to common/util.tcl that returns $mash_version.
Removed obsolete tcl/connector subdirectory.
Moved contents of common/cf-util.tcl into common/util.tcl, deleted the former, and commented the procs therein.

mash-5.0a4 (no public release)

[EA] Sat Sep 6 18:26:56 PDT 1997

Fixed up loose ends of mbone tools and mega in preparation for release for James' class.
Fixed GSM Decoder bug in vat.

[EA] Thu Sep 4 21:12:29 PDT 1997

Temporarily modified the Transducer declarations back to VUMeter since there is a problem that seems to be compiler related with gcc 2.7.2.2 that isn't getting the inheritance right.

[EA] Thu Sep 4 15:44:28 PDT 1997

Changed default behavior of Audio agent to be full duplex to match C++-code defaults.
Created simple reflector application which is a short Tcl wrapper around the C++ Reflector class.
Added AddressBlock/Simple to overide RTP-style port settings. XXX This should really be the default and RTP the special case. Get to it later.

[EA] Thu Sep 4 11:11:47 PDT 1997

Fixed a bug where VideoSession and AudioSession were duplicately defined in rtp-session-record.cc.

[SM] Thu Sep 4 01:28:00 PDT 1997

Created stand-alone version of mash called "smash" that does not include Tk or X (e.g., this is a tclsh interpreter rather than a wish interpreter).
Added a simple video capture module in tcl/demo/simple-vid.tcl to illustrate how smash differs from mash.
Created a Transducer base class to decouple audio controller from vu-meter since level meters might not necessarily be tk widgets.

[SM] Wed Sep 3 20:35:30 PDT 1997

Reworked the gain controls in audio-voxware.cc to eliminate a gain path between line-in and line-out (this otherwise wreaks havoc on echo cancelers plugged into the audio board).
Also, fixed the input gain controls that weren't working.
Modified the obtain method to reset the audio parameters in case some other process changes them from underneath us.
The first two of these changes were suggested by Amancio Hasty.

mash-5.0a3 (no public release)

[EA] Wed Sep 3 19:59:38 PDT 1997

Added hooks for sending thumbnail in RTCP channel in vic and vgw. This feature dramatically imporves performance in MeGa over slow speed links with many sources. Currently only send a bit. Eventually we will get to the thumbnail.

[TLT] Wed Sep 3 17:32:46 PDT 1997

Add a "about" line under "Help" on main menu. Also, make mb display mash_version.

[AMS] Wed Sep 3 15:14:14 PDT 1997

Reorganized rtp playback so that data is sent through Session/RTP rather than straight to the network object. RTCP packets should now be generated correctly for each playback source.

[EA] Wed Sep 3 13:01:54 PDT 1997

Added a boolean flag capability to the argument list. Simple set bool_resource_(-foo) in init_args and on the command line a '-foo' can be specified which will cause the associaged resource to be set to 1.
Merged scubavic into vic, scubagw into vgw. Invoke scuba with "-scuba" flag.
Disabled vic transmit button if there is no network.

[SM] Tue Sep 2 14:56:10 PDT 1997

Fixed bug that Elan ran up against that caused mash to fail when Audio device is not available.
Bumped version number of mash to 5.0a3 in preparation for syncing all the version numbers across all the apps.

[EA] Tue Sep 2 14:10:01 PDT 1997

First version of mb that has a 'reset' on the network (in preparation for MeGa support).

[EA] Tue Sep 2 11:48:43 PDT 1997

Fixed up some bugs in vic srclist which were cuased by unregistered sources being "updated" (nametag_ entry didn't exist yet).

[EA] Tue Sep 2 10:59:36 PDT 1997

Tied up loose ends in MeGa after Steve's changes.

[SM] Mon Sep 1 15:29:47 PDT 1997

Fixed bug that caused data packet srcid to always be -1.

[SM] Mon Sep 1 13:53:18 PDT 1997

Fixed bug that caused abort with half-duplex audio devices (audio obtain was being called by audio agent when audio already held).
Changed audio obtain method to raise a Tcl error rather than abort when audio already held.
Moved Network::port backward compat code from C++ to Tcl and removed error message in preparation for a clean release snapshot.
Fixed bugs in control panel GUI with regard to audio priority settings.

[SM] Mon Sep 1 12:12:03 PDT 1997

Changed Entry API: Entry::update now takes just the new value rather than the value and the window. Fixed up subclasses to reflect this change.
Fixed the global stats window. This required new OTcl accessors for RTP_Session::badversion_ etc.
Added an OTcl accessor to Module::target_. Previously, OTcl could set it but not query it.
Removed last vestige of "V" in core, common modules. Toward this end, added a couple new static methods to the Application class. All toplevel windows should now be created by calling "Application toplevel" (not all the code has been updated yet). There are still many uses of it in individual tools, but there is no longer any common code that relies upon it. The next still is to clean up the tools and eliminate all uses of "V".
Made first pass over objectification of Titler. It's mostly ported but hasn't been tested and one more change is needed (that relies on the new coordination bus ).
Changed occurence of $self/foo to use Object::tkvar.
Deleted NETWORK global.

[SM] Mon Sep 1 00:06:59 PDT 1997

Removed a bunch of occurences of "V".
Removed obsolete code in various places.
Improved switcher API further by making the Switcher a virtual base class from which UserWindow is derived. As a result, the Switcher no longer needed direct access to the list of active participants so we could eliminate the last vestige of calls to the old global "session" command.

[SM] Sun Aug 31 22:58:31 PDT 1997

Removed a bunch of old initialization code from controller.cc to Tcl since it's much easier to get at user options there. This eliminated all the debugging placeholder messages from this module.
Added a bunch of OTcl class variable initializers to eliminate warnings.
Reworked the API between the audio arbiter and the audio GUI to use the Observer infrastructure. This eliminated a bunch of global variables (which was buggy anyway because they were tkvar's in other places).
Fixed up the audio agent to defer allocation of the controller until after we successfully open the underlying device. At that point we can decide whether or not that device is full or half duplex and build the right type of controller. This bug was pointed out by Angie Schuett.

[SM] Sun Aug 31 20:17:33 PDT 1997

Removed all the files in the ./archival directory since they're now superceded by those in ./archive. Removed rtp_play and rtp_record since there are equivalent programs elsewhere, we don't want to maintain them, and the player and recorder scripts are much more powerful. (And rtp_play/record need to be rewritten to cleanly use our evolving agent architecture anyway.) Updated Makefile.in and makefile.vc accordingly.

[SM] Sun Aug 31 15:27:06 PDT 1997

Renamed "Timer/SA" C++/OTcl class as "TimerSA" because former has side effect of creating a Timer class and this would interferes the pure OTcl Timer class (i.e., if you inherit from Timer before defining the OTcl version the inheritance would be lost causing subtle failure modes).
Removed the global "resource" and "yesno" procs and replaced all instances of calls to them with "$self get_option" and "$self yesno".
Removed tcl/vic/cf-confbus.tcl from repository and moved confbusHandler backward-compat stub into coordbus.tcl.
Removed the Timer class in ui-stats.tcl that conflicted with the class Elan later added and reworked these classes so they uses inheritance rather than "method pointers".
Added MegaTimer stub to deal with changes in Timer abstraction.
Removed the code that reseeded the random number generator in the timer class.
Fixed problem with "vic -X transmitOnStartup=1"; it now works again.
Removed instances of calls to smallfont, mediumfont, and disfont, and removed the proc definitions from ui-util.tcl.
Removed obsolete files: tcl/vic/cf-confbus.tcl, tcl/srm/cf-util.tcl, tcl/srm/cf-network.tcl, tcl/mb/ui-util.tcl.
Removed definitions of Object::tkvar etc that are now in TclCL.

[SM] Sat Aug 30 23:47:49 PDT 1997

Added brightness controls etc for Brooktree grabber (not completely functioning yet).
Changed meterDisable to meterEnable to simplify. (Maybe this wasn't worth it because it's an incompatible change; meterDisable is probably not used that often.)
Added support for -X. Now any configuration option (i.e., X resource under unix) can be specified on the command line using the form "-X resource=value", where resource is the resource name.
Added a check and a sensible error message for the case when "-name" is not specified.
Objectified a bunch more code, including much cleanup in the audio UI and panel manipulation code. Many globals are now "tkvars". Eliminated "AGENT" hack.
Eliminated mk.entry proc. We should now use Entry class. (A number of uses still need to be updated.)
Integrated a new (but backward compatible) approach for configuring and querying user options. The OTcl base class now has a method called "get_option", which is functionally eqivalent to the old "resource" proc. By default, get_option calls [Application instance] to get the global application object, then it queries this object for the resource. The nice thing about this approach is that the options selection mechanism can now be specified on a per-object basis (Teck's original idea) but the default behavior is "global" and reasonable. Further, it's very easy to override the global behavior by simply attaching an "-optionsFrom" argument to "new", which takes an object that implements the options API. For example, of "optionsDB" is my options database object and I want to create an object of type Foo that uses my specifialized database, I can say:
set o [new Foo -optionsFrom $optionsDB]

Changed many instances of "resource" and "yesno" to use "$self get_option" and "$self yesno" to reflect the above change, and many instances of "smallfont" to "$self get_option smallfont".
Changed VuMeter::set to "set_level" because it conflicted with OTcl's set method.
Ported Site and Sitebox objects to Yatin's split-object approach. This doesn't work yet because of a couple problems that need to be fixed in TclCL (see future rev).
Changed API to TkWidget so that the Tk window is created from an "init" method rather than in the constructor. By deferring the window's creation, we can instead have the OTcl init method run later and do the creation (i.e., so it can utilize Otcl method args that aren't available when the object is allocated). Updated subclasses that use TkWidget to reflect the change.
Removed tcl/{vic,vat}/cf-args.tcl since they are obsolete.

[EA] Sat Aug 30 19:18:51 PDT 1997

Fixed bug in unicast UDP server (need SO_REUSEPORT).
Fixed up AnnounceListenManager so that it can be used in in unicast mode through a reflector.

[EA] Fri Aug 29 18:09:05 PDT 1997

Fixed memory leak in session-rtp.cc
Fixed crypt initilization problem which caused a Crypt object to be erroneously installed in vic.

[EA] Fri Aug 29 00:29:43 PDT 1997

Ported megatools and rtpgw to Steve's network object modifications.

[TLT] Thu Aug 28 17:38:01 PDT 1997

fixed follows active source in mb so that it will work after multiple imports.

[SM] Thu Aug 28 15:44:47 PDT 1997

Exposed AddressBlock API to higher levels. Tried to update scuba modules to code with this change, but some of them probably need more work.
Eliminated ApplicationAudio/Video classes and once and for all removed bandwidth logic from that class. (Now heuristic is in AddressBlock, since a default bandwidth goes with each address spec.)
Created a new class SourceAgent that sits between SourceManager and RTPAgent and is additionally derived from Yatin's Observable class (which accidentally didn't get documented below in this change history). Current code might fail if it does not include tcl/common/util.tcl (since the observer class uses some methods defined therein).
Moved tcl/archive/observe.tcl to tcl/common/observe.tcl.
Changed VicUI and VatUI so that they're now Observers.
Removed "srctab" backward compat code from vat/ui-main.tcl since it's no longer needed (and wouldn't work right anyway).

[SM] Thu Aug 28 12:24:52 PDT 1997

Fixed a bunch of bugs in switcher code. It now seems to work fairly reliably.
Moved coordination bus binding from user interface into audio agent (need to do for video as well).

[SM] Thu Aug 28 00:36:26 PDT 1997

Finished eliminating NetworkManager/RLM and created composite NetworkManager class (that always uses NetworkLayers even in flat case). Verified that new NetworkManager functions correctly for single layer.
Objectified switch and created Switcher class.

[SM] Wed Aug 27 22:04:20 PDT 1997

Created AddressBlock class for parsing multicast address specifications so Network class doesn't have to do this anymore. Eliminated Network::construct to eliminate some problems with the current network reconfiguration process. These changes seem stable but aren't completely done. We still need to integrate the RLM functionality into the NetworkManager class and add hooks to more cleanly reconfigure the network (by caching the address block in the Network object).
Renamed Network/IP to Network and removed RTIP and ATM modules since they are hardly used and it's difficult enough to design a clean interface to layered multicast groups without having to worry about supporting these other network technologies.

mash-1.0a1 (no public release)

[EA] Wed Aug 27 19:06:55 PDT 1997

Fixed up all types of platform specific mods. MASH build on IRIX 6.3, Solaris 2.5, BSD/OS 3.0 and FreeBSD 2.2.
Changed version.c creation in Makefile to use awk since sed behavior seems to not be consistent across all platforms.

[SM] Wed Aug 28 18:51:56 PDT 1997

Moved "nb_" instance variable from Module base class into EncoderModule to eliminate bogus warnings (and it wasn't used elsewhere anyway).
Removed some obsolete, commented out code having to do with video frame types.
Moved frame size calculation from grabber subclass into base class. This breaks a bunch of grabbers, but we will catch problems as we compile because prototype of grab() changed.

[TLT] Wed Aug 27 14:39:43 PDT 1997

win32

added win-tkmain.c for Tk_Main(), tkappinit's main() now calls win_tk_main. This enable us to show a dialog box during initialization when there is an error, so that we can see the error messages in the console before it vaporizes.
rerouted tcl's exit call so that we can trap exit calls (same reason as the previous bullet)
add compat/runtool.c. This complies to [toolname].exe which does an exec() call to launch mash with the tcl script. We cannot use batch files because tclpip.dll will get called for .bat files and it dies when called by an application that has a console (like ours).

mb

add "import all" option to load multiple gifs onto multiple pages. mb-sndr updated to handle calls to non-current pages.
add prev/next page nagaviation buttons
touch up display order of pages in page list
fix bugs in mb when a local receiver receives packets (change recvcommand calls from mb-sender to dispath())

ui_tools : add ui-progress dialog box for showing the progress of a long computations like the loading of multiple gifs.

[SM] Tue Aug 26 23:38:08 PDT 1997

Added hooks to VideoAgent to enable JPEG encode since Andrew Swan implemented a mash object for software jpeg encoding.
Changed Decoder and Encoder class names to AudioEncoder and VideoEncoder to avoid confusion.

[EA] Tue Aug 26 16:40:44 PDT 1997

Fixed some loose ends in MeGa objects, in particular unicast connectivity. This snapshot is the first working version of the full new MeGa architecture.

[EA] Tue Aug 26 00:06:16 PDT 1997

Added obj2str method to SDPMessage which builds an SDP announcemnt out of an SDPMessage object and sdptext_ instvar for accessing the original text of the message.
Created 'megafor' tool which acts as a unicast-multicast forwarder for MeGa.
Fixed bug in DataHandler which caused a send-only connection to fail since recv socket in this case was -1 and linking failed.

[EA] Mon Aug 25 00:34:41 PDT 1997

Added new 'Reflector' class which is a simple packet refelector.
Added MeGa v1.0 support to sdgw (rsdr as well).
As a result of new versions, C++ sdgw and hm support is subsumed in tcl or Refelector class.

[EA] Fri Aug 22 17:49:56 PDT 1997

Added MeGa support to vat.
Fixed a bunch of small bugs in vat.
Made vat address syntax consistent with all other tools - no more confid in the hostspec, added -confid flag for this purpose.
Included gsm and adpcm decoders in mash.

[EA] Fri Aug 22 15:26:58 PDT 1997

MeGa v1.0 works now for vic, and rtpgw.
MeGa montoring tool, mgamon, now works with v1.0
Fixed small bug in vic/ui-ctrlmenu.
Commented out loop detection code in rtp/source.cc - it doesn't work for MeGa since RTP spec is deficient on this issue. Will fix this.

[EA] Wed Aug 20 20:37:36 PDT 1997
New MeGa implementation in place (hm, scubagw and scubavic at this point).
[EA] Fri Aug 15 09:29:40 PDT 1997
Moved Steve's mod for the version determination to configure since make wasn't expanding the command correctly.
[EA] Fri Aug 15 09:02:14 PDT 1997
Fixed bug in AudioAgent which caused it to die if no devices were found.
[SM] Fri Aug 15 00:18:09 PDT 1997

Changed makefile to use version number in mash binary and create scripts that reference versioned mash binary. Also, removed "./" from pathname. The idea here is to antipate versioning problems (i.e., I ran into a version problem running Elan's mega tool against the latest mash build.) This is inconvenient for development because it requires that the directory containing the target mash binary be in your path.
Added code to the voxware audio module to be able to select mic vs line-in. The code should query the driver for device capabilities, but for now, we assume the board has a mic and line-in (as does the GUS PnP).
Fixed bug in application-vat.tcl where interpretation of -C and -B arguments was swapped. This manifested itself by generating a huge load of session traffic when specifying -C.

[EA] Thu Aug 14 23:13:11 PDT 1997

Fixed bug in Network which caused crypt_format to die if Crypt/Data/DES wasn't defined.
Created AnnounceListenManager class (net/announce-listen.cc, tcl/net/al.tcl) which provides a framework for developing announce/listen style protocols (see example in tcl/mega/*.tcl).
Implemented first cut of announce/listen version of MeGa Architecture. Gateways and scubavic work. Protocol is a string protocol which uses SDP.
Modified network objects and AgentRTP so that they can be dynamically reconfigured - i.e., can use 'reset $spec' instproc.
Converted port assignments to send port/recv port model rather than identical ports for both. Specs can now be addr/sport:rport/fmt/ttl. Can still specify single port style which would cause both ports to be identical.
Added sap.h for SAP headers.
Added miscellaneous network-related tcl commands: intoa, lookup_host_addr,
Made scubvic dynamically reconfigurable.

[SM] Thu Aug 14 00:18:23 PDT 1997

Added a ``KeyEditor'' class to facilitate code reuse of text entry widget for editing the session's encryption key. Generlize the ``Entry'' class. This revision is like to break some of the existing applications...
Added default ``background'' configuration resource to avoid ugly color comboes.
Integrated latest LBL mods to meteor grabber:

Differentiate video types using subclasses rather than a state variable.
Use interleaved rather than separate-component grab to avoid Pentium-PRO PCI bug.
Eliminate unnecessary memory copy by directly using REPLENISH macro.

[SM] Wed Aug 13 14:58:21 PDT 1997

Added ``Video for Windows'' capture support from Isidor Kouvelas and John Brezak.

[SM] Tue Aug 12 18:45:05 PDT 1997

Fixed some bugs in voxware audio module and extended it to deal with either full or half duplex mode. The quality and interactivity of the GUS Ultrasound Pnp under FreeBSD 2.2.2 with Amancio Hasty's sound driver are now quite good.

[EA] Sat Aug 9 16:12:21 PDT 1997

Leveraged Yatin's SDP class to create a full blown SDPParser class. The details of how to use it are too involved for this file. See tcl/common/sdp.tcl for detailed instructions.

[TLT] Fri Aug 8 19:38:23 PDT 1997
Win32 port changes

new file: makefile.vc
requires perl instead of sed/awk.
commented out numerous header files e.g.: no unistd.h, sys/param.h, sys/file.h, sys/wait.h, osfcn.h ...
Add "windows.h" before each include of "winsock.h". Some definitions are not found otherwise. We are using precompiled headers, so this should not affect speed too much.
changed includes of "Tcl.h" to tclcl.h (see change log of Tcl(CL) for details.
undef out fork() calls for win32 in tcpchan.cc, since the mechanisms are quite different for forking (see CreateProcess() and CreateThread() in the MSDN library.)
new files win32.c and win32x.c that implements some missing functions in win32. They are taken and modified from vic-2.8 source code. Note that some functions like getuid() is returning constant values in win32. Stderr/out is now directed to a 'console' instead of using a message box for each line printed. A tkConsole will appear when a script file is not supplied.
new module: makedep2 by David M. Miller of Business Visions Inc. (public domain). Used for generating dependencies in win32. I hacked it up a little bit (see makedep.c for more info). MAkefile.vc is changed to include the file 'mkdeps' which is generated by makdep2. Note that to save time when generating dependencies, I purposely excluded system directories.
changed XCreatePixmap/XFreePixmap calls to Tk_GetPixmap and Tk_FreePixmap
cursor types are identified with UPPERCASE in windows. Changed mb '... config -cursor ..' to uppercase.
fixed color problems with VAT in sitebox.cc (use system colors in win32, since "resource ..." may fail)
add code to application-rtp.tcl to add default resources for colors. This prevents calls like [resource backgound] to yield "".
Status: vic/vat/mb work now. There are still problems with 16/32 bit color modes. Preliminary diagnosis indicates that they are problems with tk. Further testing of individual tools required.
SRM changes:

add min_request_ / min_reply_ : minimum value before delay estimation will be updated. The delay estimations may be negative temporarily due to variations in end to end delay (?), don't want this to affect estimations (negative estimations will be disastrous).
add min_delay_ for controlling minimum delay estimation
Misc:

add macro "CONST_CAST(T, X)"
const char* x;
previously:
char* y = (char*) x;
now you can use:
char* y = CONST_CAST(char*, y);
eventually this should be translated to/replaced by:
char* x = const_cast < char* > y; (ANSI standard)

new tcl functions in tcl/common/dbg-err.tcl (formally resides in tcl/mb). A more user friendly version of 'tkError' that allows very limited form of diagnostics on error.

[EA] Mon Aug 4 14:13:45 PDT 1997

Added new net open() method which takes a send port and a receive port. There is now no 'port_' variable in a network object, rather there are 'sport_' and 'rport_'. As a special case, if you pass 0 as the recv port, only a send port will be opened.

[SM] Fri Aug 1 11:13:21 PDT 1997

Fixed up format of this change history. It had been corrupted, I believe, because someone used an html wysiwyg editor...

[YC] Wed Jul 30 16:13:54 PDT 1997
New archival API

Created new LTS (Logical Time System) object
Helper objects, LTSTimer and LTSTrigger: LTSTimer provides a timeout() method that the LTS object invokes when a pre-scheduled timeout happens. LTSTrigger provides a callback() method that the LTS object invokes whenever a pre-registered trigger happens. Two types of triggers are defined: LTS_SPEED (trigger whenever the LTS speed changes) and LTS_REFERENCE (trigger whevener the LTS logical-to-system reference mapping changes)
The new playback API uses the LTS object API
Cleaned up the recorder API to allow better file naming
Changed data file header formats to include additional information about the file
Added new OTcl methods to the C++/Tcl objects for better control of the objects through OTcl
TODO: document the new archival API

[EA] Tue Jul 29 20:03:17 PDT 1997
Non-fatal errors in Network/IP open() routines now return -1 rather than exiting.
[EA] Mon Jul 28 14:54:43 PDT 1997

Fixed up encryption support in mash.
Added encryption support to MeGa architecture.

[EA] Tue Jul 22 19:03:53 PDT 1997

Added PCM and ADPCM transcoders to agw. Output formats GSM or LPC.
Fixed change_format in gateways.
Added 'txonly' flag to gateways to designate that input stream should only be transcoded, but not rate limited.

[EA] Mon Jul 21 10:18:34 PDT 1997
Fixed up vic OTcl objects so that they don't break (e.g., 'Members' list, grabber objects, etc.)
[EA] Sat Jul 19 15:00:45 PDT 1997
Added 'filter-own' option to network objects for filtering own packets if loopback is enabled. This is needed for gateways running on same hosts.
[EA] Sat Jul 19 14:10:30 PDT 1997

Moved srcid allocation in MeGa architecture to Otcl.
Fixed up small bugs in keepalive mechnisms.
Need to detect a TCP half close by detecting a receive with cc=0.

[AMS] Fri Jul 18 19:49:15 PDT 1997

Reorganized RTPrecorder to use Session/RTP/Audio or Session/RTP/Video. RTPRecordAgent now inherits from RTPAgent, and RTPArchiveSource from PacketModule. This means that RTCP packets are handled correctly, and multi-source recording is done properly.

Wrote glue to allow recording to be started from sdr. record_session accepts data from sdr, parses it, and starts a recorder on the specified address.

Fixed file-name creation and header file writing.

[EA] Tue Jul 15 18:16:27 PDT 1997

Created 'mgamon' (Media Gateway Architecture Monitor) which listens to the agent hearbeats and presents the state of the system in a UI.
Added 'ascii' argument to Tcl gettimeofday command for date(1) like behavior.

[EA] Mon Jul 14 12:56:00 PDT 1997

Disabled "lookup_duplicate()" optimization in source.cc which tried to detect restarting applications. The check was performed by checking IP addrs. This wreaks havoc for streams originating from gateways since they all have the same IP addr as their UDP address. Eventually get to demultiplexing by CNAME which will do the right thing.

[EA] Thu Jul 10 14:28:29 PDT 1997

Added mb/wb gateway (mbgw). This is essentially a reflector that fits in the media gateway architecture. This completes the suite of gateways that are required for conferencing.

[EA] Tue Jul 8 19:22:32 PDT 1997

Added more scuba UI hooks to scubavic.
Added session bandwidth parameter to scuba messages. This eventually will go away when we get external feedback working.

[EA] Mon Jul 7 20:47:53 PDT 1997

Moved MeGa architecture to model were mbp is just an hm location server.
Fixed up TCP objects. Server code now works like it should, although concurrent server code is not quite there. Handlers are now TclObjects which enables easy management of multiple TCP connections.

[EA] Thu Jul 3 21:59:16 PDT 1997

Fixed up control packet handling path in rtpgw. RTCP packets are now modified and forwarded the right way.
Changed format for session initialization for rtpgw to one single command. This prevents race conditions.
Added active source check in rtpgw.
There is still a problem of "zombie" sources, but I'm beginning to wonder if this is a bug in vic that is being tripped up by the gateway output.

[EA] Wed Jul 2 11:57:53 PDT 1997

Added '--' to head.tcl so that all flags get passed to script.
Added session messages to all gateways.
Added 'alloc_srcid' TclCommand.

[EA] Tue Jul 1 11:12:42 PDT 1997

Changed MBP architecture around from polling for agents to periodic announce/listen session messages. For implementation of such protocols, take a look at tcl/mbp/mbp-heartbeat.tcl.
Added "localaddr" command to tcl for returning local address.
Added tcl/common/timer.tcl which concentrates timer objects. In particular, there are the following objects:

Timer: bare bones timer.
Timer/Periodic: periodic non-adaptive timer
Timer/Adaptive: adaptive timer ('adapt' virtual method).
Timer/Adapative/ConstBW: adaptive timer which maintains a constant bandwidth of packets. This timer could be used to implement RTCP timers for example.

[TLT] Mon Jun 30 18:50:32 PDT 1997

General: add mash.pure target for generating purified mash shell. Great for finding memory problems.
SRM
make rqt/rpy generate new random timers and use new delay estimates after each time the rqt/rpy is sent, impact: SRM_Re* members and methods changed.
add SRM_Request::reply_done() {
ignore requests for 3*distance from s and local_src
where s is the original source or requester
} (see floyd-ton96:pp6)
(NOTE: default orig_src() returns src_ which in effect sets the ignore timer to be 3*d_{requester,local_src}, make sure this gets changed for diff apps!)
the new stuff is still quite MB specific, will propably be this way until the SRM v2 is out.
implement ignore_backoff timer (see floyd-ton96:pp5).
add "SRM_Session cproc delay-params " for setting the corresponding constants from Tcl.

MB

SRM_Reply now remembers the original range in addition to the current range that shrunks as new replies comes in, so that it can successfully ignore new requests in the original range.
Fixed some memory leaks found by purify.
Add (-u/showUI) option/resource to enable/disable user interface
modified some of the bitmaps to make them smaller
add some log traces for debugging
changed temp file checking so that it will skip over unreadable files
scroll bars on canvas now only appear when needed

Active object

add session announcements
minor tune ups of drawing code + some bug fixes

[EA] Fri Jun 27 14:59:52 PDT 1997
Fixed bug in rtpgw that was caused by the fact that there was only one SessionManager for all sources. Need one per session.
[EA] Thu Jun 19 14:46:58 PDT 1997
Modified rate control in transcoders so rate changes take effect faster.
[EA] Wed Jun 18 12:07:50 PDT 1997
First stable version of mbp system with scuba enabled.
[AS] Tue Jun 17 16:18:50 PDT 1997
Modified render/color-true.cc to handle 24 bit deep displays at either 24 or 32 bits per pixel.
[SM] Thu Jun 12 09:26:06 PDT 1997
Applied patch to grabber-rtvc.cc from Michael Speer to deal with new location of rtvc microcode in Solaris 2.6.
[YC] Mon Jun 9 19:27:19 PDT 1997
Moved the tkvar stuff into Tcl/tcl-object.tcl. Arranged the delete proc to invoke "$object delete_tkvar" to clean up any global tk variables that are associated with this variable
[TLT] Fri Jun 6 20:13:59 PDT 1997

Note: these changes include some (unavoidable) whitespace changes, so please use "diff -b" when trying to figure out changes. Sometime later, I will make a pass thru MB files to change all identation in one shot so that whitespace noise is concentrated in one checked in.
MB changes

MB C++ code now merged with mb-archive code and resides in mash-1/mb as opposed to mash-1/mb_obj (Makefile.in updated)
first-cut at merging, may still contain bugs.
save mb temp files in /tmp/ instead of current directory
fixed bugs in rqt/rpy mechanisms
add option (-ui) to run mb unmapped
add option (-play/-rec) to playback/record mb-sessions at the tcl level. Still primitive.
add option (-u) to run mb using a different uid that getuid(). Used for testing

changes to srm/*

updated mb handle_* interfaces to take in source id's as well, used for delay estimation etc.
delay estimations (O(n^2)) for SRM added

exponential averaging for delay estimation
implemented SRM random timers (sigcomm 95), the constants c1, c2, d1, d2 are currently fixed (i.e. not adaptive).

reduced default SRM rate limiter to 128 kbps (we should really make this adjustable at run time).

misc changes

changed mtrace types from #define to enum, changed 'proc mtrace' to output call into C++.
added MLogObject to misc/mtrace.* for supporting logging of time-stamped traces to a file. This is used for testing.

[SM] Fri Jun 6 16:13:17 PDT 1997
Eliminated tk palette changes. They weren't being called at the right time and the option data-base priorities are difficult to get right, so let's just use tk defaults (they are nice enough now anyway, compared to the old bisque defaults).
[SM] Thu Jun 5 23:25:45 PDT 1997
Added a simple first cut at headless vic (to run on the mash virtual room testbed).
[SM] Thu Jun 5 19:40:33 PDT 1997

Ported the qcam grabber from vic to mash.
Fixed up the Makefile rule for embedded cb tcl code.

[YC] Thu Jun 5 15:31:38 PDT 1997
Created files: tcl/ui_tools/cmdlg-file.tcl, tcl/ui_tools/cmdlg-icons.tcl. the cmdlg-file.tcl is based on tkfbox.tcl supplied with Tk 4.2, except that, rather than searching for icon files on the file system, it uses icons defined in cmdlg-icons.tcl
[YC] Thu Jun 5 14:25:28 PDT 1997
Added functionality to tcl/archive for mb-record. Created a user-interface for the recorder tool.
[YC] Tue Jun 3 17:39:45 PDT 1997
Someone from the ns developers' group changed configure.in.tcl/tk/otcl which caused the mash configure to not work anymore. I have temporarily fixed configure.in and Makefile.in; but we need to rename the macros that have been defined in conf/configure.in.fns to not use NS-specific names.
[YC] Tue Jun 3 17:21:01 PDT 1997
Created archive and tcl/archive sub-modules for the new RTP and SRM archiving tools.

archive-* files are generic files for interfacing the archival objects with the data/index files
rtp-playback.*: playback tools for RTP files (I haven't yet converted the recording tools to use the new archiving objects)
mb-*: mb-specific playback/recorder objects

[YC] Tue Jun 3 17:12:50 PDT 1997
Changed the debug.* files to mtrace.*. Created tcl/common/mtrace.tcl to set/reset trace flags through tcl:

Use "set mtrace [MTrace init {trace flags}]" to create the mtrace object (See tcl/archive/player.tcl for an example)
Use "$mtrace toggle_window" to display/hide a window that is used to set/reset individual trace flags dynamically
In your .cc files, use the MTrace macro to output a trace message
In your .tcl files, use the mtrace procedure to output a trace message. (This still needs some more work)

[YC] Tue Jun 3 17:05:45 PDT 1997
Cleaned up the code for using GIF objects in Tcl code

Use the image2tcl utility to convert GIF files into tcl source that can be included in mash scripts. See the tcl/ui_tools/okcancel.tcl target in Makefile.in for an example of converting GIF files to tcl.
Use the -image option (where is the name specified to image2tcl) to use the gif image in Tk widgets.
If you wish to use transparent GIFs, use the standard giftrans utility (the source is available from http://www-genome.wi.mit.edu/WWW/tools/graphics/Unix/giftrans/giftrans.c) to convert the GIF to a transparent GIF and then run it through image2tcl. Tk can't handle transparent GIFs very gracefully; what you can do is specify beforehand what color to use for the transparent region. Set the global Tcl variable TRANSPARENT_GIF_COLOR to the appropriate color, or use the transparent_gif procedure defined in tcl/ui_tools/ui-util.tcl. Remember to set this variable before sourcing the files that contain the GIF objects.

[EA] Mon May 19 10:10:18 PDT 1997
Added first version of SCUBA controlled RTP Gateway, scubagw. The gateway is controlled by the SCUBA enhanced vic, scubavic.

[EA] Thu May 15 19:53:25 PDT 1997

Added Amancio Hasty's grabber for the Brooktree848. The grabber shares the same code as the Matrox Meteor. It still has some problems since it does not seem to have the capture size right (probably a driver problem), but it's a start.
Cleaned up the SCUBA implementation. Broke it out of vic so we can use it also in the RTP Gateway. Created a 'scubavic' applicaton which is vic controlled by scuba.
Fixed the bug in vic's UI visual class setting which caused an 8-bit PseudoColor visual to be matched up with a TrueColor renderer causing a memory error.

[SM] Thu May 15 09:52:12 PDT 1997
Added assistor module for Digital's MME library (assistor-mme.cc). Contributed by Atanu Ghosh.

[EA] Wed May 14 12:52:23 PDT 1997
Added in RTP Gateway support. This involved the following changes:

Added new objects: Transcoder, JPEGTranscoder, H261Transcoder, RTPGWSession which do the obvious things.
Broke out the conditional replenishment code from the grabber, and created a ConditionalReplenisher class since the Transcoder needs it as well.
CoordBus is an OTcl class which has a handler per instance. Thus, you set the dispatch table per instance. The handler is now set to the instproc 'confbusHandler' (i.e., you don't need to pass it to the object).
Cleaned up RTP OTcl class. All RTP admin operations should be put there. In particular, moved the init_local which determined rtpName and rtpEmail to RTPApplication. Added rtp_representation instproc to RTP for determining the best representation for an RTP source (used to be called something else in one of the util files).
Added srcid parameter to BufferPool since local srcid is not always what we want (e.g. transcoders).
Added a MultiInputManager class. This class allows to set up applications with two flow paths: one for data, and the other for control. Thus, you can instance two (new) modules, DataInputHandler and ControlInputHandler, in a MultiInputManager which provides hooks to received control and data packets.
Source::lookup() now takes the name of the session requesting the lookup for applications that require pointers to the session on which the source appeared.
Created a PacketReplicator class ("Replicator/Packet" in OTcl) which implements a one-to-many fan-out of the input pktbuf. See misc/replicator.cc for details.

[TLT] Mon May 12 22:19:41 PDT 1997

checking in before 268 class presentations.
change indent width of files I touched to 8
add advance/reverse to atobj
moved network model of animator to a different class: NamNetwork. This is neccesary so the edges and nodes become animation objects and not heavy weight objects as they are now...

attach NamNetwork to DataSrc/Nam/Local, Animator/Nam now only nows about animation objects and not about the layout of the graph (directly).
make NamEdge, NamNode pure lightweight animation objects.

moved UI stuff to AnimationUI which talks to DataSrc/Nam/Local that sends data/animation control to the network as well as to the Animator
removed local filter agent, since all the control information is generated from DataSrc/Local/Nam, it suffices to put the loopback mechanism as proc's in DataSrc/Local.
animation.tcl and animation-nam.tcl has been renamed to anm-view.tcl and anm-view-nam.tcl, and classes Animation/* has been renamed to AnmView/* to reflect the now lighter weight module. It remains to see whether we should have an AnmView/ Class after this change....
add notion of static objects and some reliability related mechanisms.
add repair/request mechanisms (add atobj-rreq.o to Makefile.in). The basic mechanisms are out but needs twitching.
add slider bars for adjusting update intervals.
added TODO file in atobj/ - tons of things to be done!
add more controls to error debug box. Including hidden controls for debugging in atobj ui.
status: random access is working, new receivers can join in the middle of the session and still see data. Tested up to 3 machines at one time.

[SM] Sat May 3 19:18:41 PDT 1997

Simplified calling conventions to RTPAgent::init; rtp agent now grabs extra parameters out of resource database directly.
Fixed some bugs introduced in last rev.
Fixed bug that caused otcl exit when source was deactivated from the rtp layer.

[SM] Sat May 3 17:05:42 PDT 1997

Moved audio device initialization from callee into audio agent constructor since too much of the audio agent class depends on the existence of an underlying C++ audio object.
Removed Unix/Windows UI differentation below VatUI/VicUI OTcl classes. I believe the Windows case can be handled more gracefully.
Renamed audio ControlMenu as AudioControlMenu to avoid conflict with vic (still need to rename video couterpart).
Changed VicUI/VatUI to take pathname as an argument rather than assume the toplevel "." window. This allows us to create multiple UI's in a single mash process.
Reformatted CHANGE log as in ns (bold instead of italics for dates).
Fixed some bugs in Makefile (another GNU make feature removed and a trailing slash that caused a problem with Irix make)
Commented out debugging printf in FCAMgr.

[TLT] Fri May 2 19:16:13 PDT 1997
Initial checkin for AcTive Objects (short form: atobj). Simple playback across multicast is now working.
[SM] Thu May 1 14:47:08 PDT 1997
Updates to Parallax modules thanks to Scott Schmitz. Broke confbus.h out of confbus.cc so can derive different coordination buses. Added freebsd to 'ICMP port unreachable' bug fix list in net.cc.
[EA] Fri Apr 25 16:50:07 PDT 1997
Broke confbus.h out of confbus.cc so can derive different coordination buses. Added freebsd to 'ICMP port unreachable' bug fix list in net.cc.
[EA] Wed Apr 23 18:46:26 PDT 1997
First semi-stable version of mbp and hm tools. Fixed up UDP unicast server code. Added sdgw.
[SM] Tue Apr 22 11:53:25 PDT 1997

Added flush method to Network object to toss all current packets in kernel socket buffer.
Added a hook to get at timestamp record of RTP dump file if it appears at front of file.
Added some customization for ARPA demo to vic scripts only if Vic.demo is true.
Added a flag to the RTP recorder object to force it to always dump a ts record at the front of the file upon receiving the first data packet.

[SM] Sat Apr 19 19:47:10 PDT 1997

Fixed up the names of the RTP archiving objects to bring them into conformance with current conventions (fixed up corresponding tcl scripts, rtp_play and rtp_record, but there might be other scripts that I missed.)
Fixed ntohs bug in packet_source.cc that caused session packets to be ignored (and timestamp control messages to be sent as data packets which would throw off the timing...)

[SR] Fri Apr 18 22:34:50 PDT 1997

Added RTP-like CNAME for SRM. Reads the X resource rtpName to get a string. If absent, gets the uid @ host address.
Changed MediaBoard ui-srclist.tcl to use this cname in displaying the srclist.
Repaired the driver scripts in tcl/srm, and added srm (the tcl driver) to the list of tools.

[EA] Thu Apr 17 21:16:21 PDT 1997
Created PacketTable object that provides a simple mechanism for interfacing between OTcl control and C++ level packets (i.e., it prevents needing to pass all the fields into and out OTcl.
[EA] Tue Apr 15 22:53:31 PDT 1997

Added first versions of mbone-proxy (mbp) and host-manager (hm).
Created a 'bin' directory where tools get created - things are much cleaner this way.
Moved the plugin logic from the Makefile to configure script so that we don't need gmake to compile.
Moved cb_otcl.tcl to tcl/coordbus so that it fits into mash model and does not have to be loaded by coordbus.cc.
Added UDP server code to net-ip.cc.
Added TCP server and client modules.

[SM] Wed Mar 26 17:29:38 PST 1997
Fixed problem that was causing "jittery video". The grab routine used to continue to grab frames if the system wasn't "too far behind". As long as the coder could almost keep (within 200ms of real time), the loop would continue. The fix is to only decode one frame per grab and schedule a zero-length timer if we're behind (so that other events can be dispatched in the meantime). There is probably still a problem somewhere in the code (maybe in the decode path) because this symptom should have manifested itself in the old version of vic... Even so, I believe this change is better than what we previously had here.
[EA] Mon Mar 17 18:07:15 PST 1997
Added initial version of SCUBA receiver-driven bandwidth allocation support.
[EA] Thu Feb 20 15:42:32 PST 1997
Modified video and audio agents to allow non-RTP session types to be used and to derive the class name from them.
[EA] Thu Feb 20 15:23:11 PST 1997
Fixed bug in h.261 encoder that caused rate control to break. Fixed bug in Transmitter where an instance variable was shadowed and bind() was called twice causing an inconsistency to happen which manifested itself in the fact that the tranmission rate was not being updated. Finally, fixed vic control menu problem where the frame and bit rate indicators where not being updated.
[SM] Wed Jan 8 11:32:27 PST 1997
Patched memory leak in sitebox.cc thanks to Bill Fenner.
[SM] Wed Jan 8 12:16:09 PST 1997
Many changes to make RLM network machinery work again for retreat demo. This code had become way out of date wrt to the new MASH object hierarchy.
[SM] Sat Jan 4 04:52:56 PST 1997
First cut at postscript rendering objects (based on gs). Borrowed liberally from my implementation of this in wb.
[SM] Thu Jan 2 13:01:16 PST 1997
Added CheckButton class as wrapper to tk checkbutton. Separated all UI elements from audio arbiter and factored AudioPanel class into a separate file to be shared with vic. Created VicAudioUI as first cut at combined a/v UI.
[SM] Sun Dec 29 21:54:19 PST 1996
Created a bare audio agent OTcl class that is separate from the user interface. We can finally re-use the vat/rtp audio machinery in a straightforward fashion.
[SM] Sun Dec 29 21:54:19 PST 1996
Made several improvements to the Coordination Bus API and objectified it in an OTcl class.
[SM] Sun Dec 29 21:54:19 PST 1996
Created two new useful and re-usable otcl classes from the vat sourc code. The AudioArbiter class implements negotiated access to the audio device using the Coordination Bus; the AudioPanel class is a reusuable user interface element that houses the audio meters and volume sliders.
[SM] Sat Dec 28 16:48:25 PST 1996
Added audio objects from vat-4.0b2 and ported to mash OTcl framework. Ported portions of vat tcl, in part for the new audio agent API and in part as an example of how to use the MASH objects to implement vat. The official vat implementation is still maintained and distributed from LBL.
[SM] Sat Dec 28 16:48:25 PST 1996

Added back tk stripchart.
Revamped stats so that source stats are now instance vars. did more work on ui-stats.tcl.
Fixed up rendering allocation hooks so code should again work under all supported display types.
reworked Source class so that Source::Layer objects are now derived from TclObject. Tcl now creates the layers and installs them in the Source object. Morever, stats across layers are now computed in tcl instead of c++.
Eliminated V(encoder) and V(grabber).
Fixed several bugs in VideoAgent class.

[SM] Incorporated Elan's module changes. Now everything that processes a frame or a packet buffer (or any data) is derived from the base Module class much like VuSystem. Removed notion of "frame type" from previous module because all type information is instead maintained in tcl. We no longer support RTPv1, ivs, or nv session types.
[SM] Major changes to Tcl/C++ object hierarchy. Now based entirely MIT's Object Tcl. All objects are created in and managed by Tcl (previously, the C++ side created many of the objects). The TclClass C++ base class replaces the old Matcher class. An OTcl class is created in C++ by statically declaring a derived subclass of TclClass. OTcl makes it easy to extend a class with new methods either on the C++ side or the Tcl side.
[SM] Changed packet handler API to take a pktbuf instead of a header and data buffers, i.e., changed from scatter-gather to contiguous buffering model. Convention is that decoder can hold onto pktbuf and must release it when done. This has the advantage that the code is simpler, but the disadvantage that hardware-compressed streams (like JPEG) must be copied (or we have to lay down a header in the capture buffer).
[SM] Changed pktbuf structure to be indepedent of unix msg header / iovec. Now unix compat is isolated to net.cc module.
[SM] Broke out buffer allocation routines into separate class. Buffers now distinct from transmitter class so we can use same hooks on the receive-side and loan out buffers to decoders.
[SM] Fixed bug with calculation of extended highest sequence number in reception reports. Reported by Bill Fenner.
[SM] Added experimental PVH layered video codec from Steven McCanne's dissertation work. Includes changes to grabber and replenishment algorithm to implement hierarchical conditional replenishment. (This work done during spring 1996.)
[SM] Added Layered-RTP extensions as described in Speer and McCanne's Internet Draft.
[SM] Fixed uninitialized pointer bug that caused core dump when switching among video formats (manifested itself switching between JPEG and H.261 with a SunVideo). Fix supplied by Elan Amir.
[SM] Created initial version from vic-2.8 source code base.
[YC] Updated mb_obj to mb; split up mb functionality into base and derived classes to allow reuse of code for the mb archiving agent
[YC] Modified SRM to use a consistent naming scheme for methods. Included mechanisms for applications to define their own srcid's, and to create multiple local sources.
[YC] Added a Floor Control module (fca) to the mash-1 module and the mash-1/tcl module.

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