Thought I would keep this for updates on my project for SOC 2007.
For SummerOfCode I will try to improve DirectSound and alsa, on the following things:
Add support for DSCapture in winealsa (Currently not implemented) - Fix slowness of alsa wavein capture in directsound
- Try to use software buffers less, rather forward to alsa for that. (3 line patches would do it now, but I don't think it's a good idea with the dmix bugs)
- Improve current (broken) code for winealsa's directsound rendering
- Allow for using IDs:(Un)lock in dsound's builtin mixer
- Get directsound software mixer working better (it's black voodoo!)
- Verify that wine dsound follows acceleration levels:
- Emulation: Only winmm interface
- Basic: Force software mixer, only primary accelerated
- Standard: Allow secondary idsdriverbuffers
- Full: Properties exposed
- And of course just a lot of testing
- Potentially: Extend support for dsound to 4 or 6 channels and 24/32 bit sound. (Only 24+ bits done)
- Remove DS_HEL_FRAGS and instead use fraglen to calculate fragments needed
- Fix alsa dsound volume control
Also cool to have, if I have some time left:
- Allow basic configuration in winecfg, rather then fiddling with registry
- Unify the winealsa threads (mixer/midi/wavein/waveout), perhaps for soc?
Implement IDsDriverNotify, and make sure directsound only uses it if hw accel > basic
- More granular position in case of alsa dmix
My public git tree no longer exists: It has been merged with the main wine tree.. Also it seems that CIA has an easy way to track committed changes: http://cia.vc/stats/author/Maarten%20Lankhorst%20<m.b.lankhorst%40gmail.com>?messageSort=3
Currently I'm working on the following sub-part:
- Implement dscapture for ALSA
My testing program for it, which I dubbed "Pointer eater", is a program I wrote and released under the LGPL license. All it does is playing a wave file, but the way it does it is especially hard on directsound, and allows me to uncover bugs.
It's available at http://cross-lfs.org/~mlankhorst/dsoundtest.tar.gz
Precompiled binary at http://cross-lfs.org/~mlankhorst/dsoundtest.exe
Suggestions? Put them beneath here