Difference between revisions of "OpenTasks"

Jump to navigation Jump to search

OpenTasks (view source)

Revision as of 20:53, 7 March 2007

2,057 bytes removed ,  20:53, 7 March 2007
Removed FMOPL (see discussion on IRC) and the (empty) "port specific projects"
(→‎XMIDI parser: put this in same format as other tasks)
(Removed FMOPL (see discussion on IRC) and the (empty) "port specific projects")
Line 122: Line 122:


* SoundFX is used by the Future Wars and Operation Stealth games of the cinE engine. The player is already implemented, but it cannot load music stored in Amiga format with combined track info and instrument info. The existing code only supports loading them separately, which happens to be the way they are stored in the DOS version. If you don't have the Amiga versions of the required games, you can use the [http://quick.mixnmojo.com/demos/fw_demo_ami.zip demo] of Future Wars and the [http://quick.mixnmojo.com/demos/op_demo_ami.zip demo] of Operation Stealth. A standalone player has been written in the past, initially for the cinE project (the source is available [http://membres.lycos.fr/cyxdown/scummvm/cinematique/ here]) which should be able to play the music tunes of Future Wars, Operation Stealth, Cruise for a Corpse and Another World.
* SoundFX is used by the Future Wars and Operation Stealth games of the cinE engine. The player is already implemented, but it cannot load music stored in Amiga format with combined track info and instrument info. The existing code only supports loading them separately, which happens to be the way they are stored in the DOS version. If you don't have the Amiga versions of the required games, you can use the [http://quick.mixnmojo.com/demos/fw_demo_ami.zip demo] of Future Wars and the [http://quick.mixnmojo.com/demos/op_demo_ami.zip demo] of Operation Stealth. A standalone player has been written in the past, initially for the cinE project (the source is available [http://membres.lycos.fr/cyxdown/scummvm/cinematique/ here]) which should be able to play the music tunes of Future Wars, Operation Stealth, Cruise for a Corpse and Another World.
=== Rewrite FMOPL emulator ===
''Technical Contact'': [[User:Sev|Eugene Sandulenko]]
''Background:''
Many games supported by ScummVM contain sound data intended for the [http://en.wikipedia.org/wiki/AdLib AdLib] Music Synthesizer Card, or other AdLib-compatible hardware like the SoundBlaster. These sound cards used the Yamaha YM3812 sound chip (also known as OPL2) to produce sound via FM synthesis. For more information about how this is done, see Jeffrey S. Lee's web page on [http://www.shipbrook.com/jeff/sb.html Programming the AdLib/Sound Blaster FM Music Chips].
In ScummVM we use the well-known FMOPL emulator from MAME V0.37a with some modifications (the name is the composition of "FM" and "OPL", see above). That was one of the few
versions on MAME released under the GPL, making it legal for us to use this particular version of the FMOPL code. Jarek Burczynski later rewrote the FMOPL emulator to be bit-precise, but unfortunately for us his work has only been released under a GPL-incompatible license.
''The Task:''
What needs to be done is to understand Jarek's current code and write a new emulator. Efforts must be made to avoid verbatim copying of his code, to ensure no license violation takes place.
There are several approaches to do this, but most are not suitable for a single developer. A possible approach would be to fix our current FMOPL code by looking at how Jarek's code works. Another would be to start with a second, totally different emulator which we have and gradually improve that one (which was written by Ken Silverman and released under the GPL).
<font color="magenta">Fingolfin has some doubts whether this is a realistic project. In particular, the approaches suggested above would possibly still violate Jarek's license, as most license do cover "derived" work -- and looking at some code and then writing your own definitely falls into that category</font>


=== MIDI enhancements ===
=== MIDI enhancements ===
Line 335: Line 317:


The task will require good use of a memory leak analyzer and C++.
The task will require good use of a memory leak analyzer and C++.
== Port specific projects ==
<font color="magenta">Porters, add your ideas here -- and soon, ''before'' we submit the project for review!</font>
Fingolfin
1,079

edits

Retrieved from "https://wiki.scummvm.org/index.php?title=Special:MobileDiff/5606"

Navigation menu