Klaus,
Regards
Alex
Klaus Jaensch wrote:
It's CR 6477263: JavaSound doesn't support multi-channels on Windows
(http://bugs.sun.com/view_bug.do?bug_id=6477263)
Feel free to develop a fix for the CR :)
Yes good idea, but I fear building the JDK under Windows, because Sun uses
old versions of SDK's and Compiler (I do not have VS.NET 2003 and I don't
want to buy it at eBay). I have already build an older JDK version and it
was horrible. (Tweaking make files and so on ...)
Is it possible to compile dsound.dll seperatly with VS 2005 Express ?
Due the build doc (make/README-builds.html) "VS2005 compiler will not work at
this time due to the new runtime dll and the manifest requirements". :(
I never used VS2005 so I don't know what it requires.
AFAIR there was some free toolkit with VS2003 c++ compiler. Most likely it
should work.
(BTW you need to build jsoundds.dll - see make/javax/sound/jsoundds)
Why do you want to keep supported format unchanged?
Right way is to change the supported formats (line/mixer should report formats
it really supports).
Yes, you are right. But I do not know if it is possible to get the
supported formats from DirectSound.
I think the number of capture channels is available, but only when the
line is open.
Yes, DirectSound does not provide information about HW capabilities (the
detection was possible in WinMM, but I don't remember is it possible to
determine relations between WinMM & DS devices and I'm not sure WinMM functions
supports >2 channels).
Anyway I think due DirectSound can handle multi-channel audio, JavaSound should
report it as supported formats (at least for playback, capturing requires
additional research).
Regards,
Klaus
Regards
Alex
Klaus Jaensch wrote:
Hello,
I would like to record multi-channel 24-bit audio with the DirectSound
JavaSound implementation under Windows.
But the audio formats defined in
j2se/src/windows/native/com/sun/media/sound/PLATFORM_API_WinOS_DirectSound.cpp
are limited to 8/16bit and 1 or 2 channels.
I would like to discuss how this limitation could be removed.
For testing multichannel capabilities of JavaSound I extended channelsArray
up to 8 channels and bitsArray for 24/32 bit recordings, then compiled
dsound.dll and tested recording.
It worked fine, so it's a pity that the recording formats are restricted to
basic formats.
The question is how to make multi-channel possible without changing the
supported defaults formats, which can be queried by
isFormatSupported(AudioFormat).
Regards,
Klaus
------------------------------------------
Klaus Jaensch
Muenchen
Germany
Institut fuer Phonetik und Sprachverarbeitung
Schellingstr.3/II
80799 München
EMail: [EMAIL PROTECTED]
------------------------------------------
Klaus Jaensch
Muenchen
Germany
Institut fuer Phonetik und Sprachverarbeitung
Schellingstr.3/II
80799 München
Phone (Work): +49-(0)89-2180-2806
Fax: +49-(0)89-2180-5790
EMail: [EMAIL PROTECTED]
