[wdmaudiodev] Multichannel (channels > 24) problems

  • From: bollinger@xxxxxxxx
  • To: wdmaudiodev@xxxxxxxxxxxxx
  • Date: Mon, 26 Jun 2006 17:19:24 +0200

Hello once again!

We have developped a WavePCI driver for a multichannel sound card with a maximum number of 64 channels (64 IN, 64 OUT).

With DirectKS applications like Sonar everything works perfectly.

With DirectSound applications however (e.g. Windows Media Player or some private multichannel applications) some channels get muted.

Dumping the mappings in the driver confirmed to me that often some channels above the 24th channel are muted (only a few, randomly, but very often the 25 and 26th channel).
For instance I use multichannel formats with wBitsPerSample = 16.

Who observed similar problems or who knows about limitations ? (KMixer ?)

- Markus

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