WMA 48khz streams, BASS and ASIO (1 Viewer)

[Symphy]

Hi there,

I get a problem with playing WMA 48 khz streams with BASS player over ASIO. WMA 44 khz and mpeg streams play well. When using waveout there is no problem.

Example: http://switch.streamgate.nl/cgi-bin/streamswitch?streamid=46&a=.asx
The stream is played but it sounds just like the playback sample freq. is set too high. (continues stuttering and higher pitch)
My soundcard gets properly set at 48khz though according its controlpanel. The logs show no abnormalities.

What o what can this be..

Greetings Symphy


TV-Server Version:
MediaPortal Version: 0.2.3.0 RC1 SVN:15641
MediaPortal Skin: BlueTwo Wide
Windows Version: XP SP2
CPU Type: Intel Celeron 2.4
HDD:
Memory: 1GB
Motherboard:
Motherboard Chipset:
Motherboard Bios:
Video Card:
Video Card Driver:
Sound Card: M-Audio Audiophile 2496
Sound Card AC3:
Sound Card Driver: 5.10.00.0052
1. TV Card:
1. TV Card Type:
1. TV Card Driver:
2. TV Card:
2. TV Card Type:
2. TV Card Driver:
3. TV Card:
3. TV Card Type:
3. TV Card Driver:
4. TV Card:
4. TV Card Type:
4. TV Card Driver:
MPEG2 Video Codec:
MPEG2 Audio Codec:
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Cooling:
Power Supply:
Remote: Marmitek PC Remote
TV:
TV - HTPC Connection:

 

[Symphy]

I've done some more research. The same thing occurs when using a Soundblaster card over ASIO4ALL, so it's not a m-audio driver issue.

 

[Symphy]

Ok, i've been in the code now and know what it is. The decoding mixerstream is initialized to 44100 hardcoded while the asio device is set to the source rate, which can be 48000.

 

[hwahrmann]

oh, sh*t missed that.
of course when doing ASIO the mixer needs to be at 48khz as well.
will change it immediately.

with 48000 on the mixer and playing a standard 44khz mp3 it listens like being in slow motion.
doing that via asio4all on my dev notebook.
please test, how it will work on your side.

please run a test with the next public build and let me know

 

[hwahrmann]

Needed to revert back, as it caused problems when having a mix of 44kHz and 48khz
when crossfading i would have both files in the mixer causing troubles.

btw, just noticed that you've written your own ASIO plugin.
Why not sharing the experience with us and we put your code into the BASS player?

 

[Symphy]

I'm afraid you will have to re-initialize the mixer stream each time the source samplerate changes...

About my plugin, you can use the code of course. Can i put it in svn somehow or do you want a zip?

Allthough i started out with the existing code, which is mostly yours if i'm not mistaken (credits for that ), i ended up totally rewriting it beond recognition leaving out anything that i personally don't use. So it may not be easy to use parts of it in yours. Also, it uses some very unusual things like a ringbuffer implemented in managed code... That may require a lot of testing before using it in MP's core.

Anyway, let me know where you want the code.

Regards
Sieds

 

[hwahrmann]

you've got a PM with my mail address.

thx,

Helmut