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NetBSD General Other questions regarding NetBSD which do not fit in any of the categories below. |
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The USB audio device is:
idVendor: 0x0d8c C-Media Electronics, Inc idProduct:0x000c Audio headset line-input: (L-R) line-output (L-R) microphone input (mono) This works very well for output on NetBSD (what most people probably really use it for), but for my app I need input as well. I posted a bug to NetBSD's Send-PR page a week or so ago, but no response has been received yet. I imagine they have other fish to fry :-) . But, at least I've put the particulars here so that someone may eventually run across it. |
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I have the same "issue" than you when I was trying to record my desktop sounds on NetBSD. It works but I never succeed to change the channels from 1 to 2, it won't change so in my videos, I had to record in mono to avoid hearing only from one ear when listening what I recorded but then it means no stereo in the videos...
I have no idea if it is a bug or if it is NetBSD that only think my sound card can only record in mono or anything else... But I have the same issue than you. I discussed a bit about it to #netbsd but no one knows. |
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My understanding is that this is not just a hardware/sound driver issue - an audio server is needed. From sndio(7) on OpenBSD:
Code:
The sndio audio and MIDI system provides access to audio and MIDI hardware and to services provided by sndiod(8), summarized below. Hardware audio(4) devices correspond to peripherals. Only one application may use any device at a given time. Generally a limited number of encodings, sample rates and channel numbers are supported by the hardware, which may not meet the requirements of audio programs. To overcome hardware limitations and to allow multiple applications to share the hardware, sndiod(8) can be used. It exposes one or more software sub-devices backed by the underlying hardware, while doing all necessary conversions on the fly. It can mix multiple streams or split the hardware into multiple sub-devices, to allow programs to use the hardware concurrently. |
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In the works for NetBSD 8
Quote:
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The task of the kernel mixer is to mix different sound outputs to one stream. No blocking when Firefox und XMMS require the audio interface. This has nothing to do with saving setting.
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NetBSD 8.99.25(AMD64)@Xiaomi Air 1.Gen |
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