Old 3rd November 2006, 11:02   #1
3ngel
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White noise in "in_dshow.dll" on anything FLOAT

Hi,
there is a serious bug in the in_dshow.dll, when playing anything in format of IEEE FLOAT.
It's not dependent from the external DSFilter. Tested with any ds filter around AAC,DTS,AC3,OGG,MP3.
All the filters works well up to 24bit. When switching to FLOAT, there is distorted white noise.
Please fix this.
Thank you.
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Old 3rd November 2006, 12:11   #2
DJ Egg
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Strange.
All my 32bit float wav's play perfectly with in_dshow v1.0 (from Winamp 5.31).
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Old 3rd November 2006, 13:09   #3
3ngel
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Mmm... strange, why my version is 0.99?
I've downloaded the latest.... try to download again.
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Old 3rd November 2006, 13:21   #4
DJ Egg
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Stickys first?
http://forums.winamp.com/showthread.php?threadid=258269
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Old 3rd November 2006, 14:00   #5
3ngel
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So, installed again. This time the version is right 1.0
But the problem remains.
An important thing. You say "my 32bit float". A sample can't be 32bit AND Float. A sample can be integer 32bit or FLOAT.
Tested again with the in_dshow.dll 1.0. Up to 32bit all is fine. Switching to FLOAT there is white noise.
You can test for ex. with latest ac3 filter (or whatever you prefer). You can verify in realtime. Start an ac3, open the info panel of the filter and switch the output resolution.
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Old 3rd November 2006, 14:31   #6
DJ Egg
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Sorry, but I can't reproduce the problem, not with WAV or AC3 (even with FLOAT as Output). They all play fine with in_dshow. Anyone else?
Attached Images
File Type: png float_wav.png (4.6 KB, 250 views)
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Old 3rd November 2006, 16:18   #7
3ngel
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In the way you show in the attachment you're testing the in_wav.dll, but the problem is in the in_dshow.
To test it, be sure to add the .ac3 in the config dialog, then load even a non-float ac3 (like any film soundtrack), and set the ac3 filter as shown in the attachment.
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File Type: png test.png (5.0 KB, 253 views)
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Old 3rd November 2006, 16:35   #8
DJ Egg
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No. I was just showing you proof that it was a float wav.

As I said, I can't reproduce the problem.
Attached Images
File Type: png ac3_dshow.png (93.6 KB, 258 views)
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Old 3rd November 2006, 17:01   #9
3ngel
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Damn... that's really strange.
A thing i can tell you is that with a previous release of in_dshow, i think something like 0.7x the float problem didn't show (well, there where other problems but the float was right).
What output plugin you're using?
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Old 3rd November 2006, 17:11   #10
3ngel
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Ok, got the problem at least the ac3 specific matter.
You have tested with ac3filter version 1.01a, and it works on me too with it.
I have tested with the latest stable version 1.11.
Test the latest from http://ac3filter.net and you'll see the problem.

PS: for information, both versions work without problem with MediaPlayer or other apps using DShow.
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