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maruko
n00b
Joined: 02 Jul 2005
Posts: 4
Location: Philippines
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 Posted: Sun Jun 06, 2010 3:47 pm Post subject: JACK > jack-rack + 6 channel LADSPA plugin |
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Hello,
I am using a "virtual surround" LADSPA plugin which has 6 inputs and 2 outputs. Currently, my JACK setup has only 2 playback and 2 capture ports. Am I correct that the LADSPA plugin would only be receiving data from 2 channels? If so, how do I set JACK to have 6 capture/input channels?
I tried setting the input channel to 6 via Qjackctl but JACK quits with a bunch of errors. Here is a part of the messages from Qjackctl:
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<snip>
Sun Jun 6 22:53:54 2010: Jack: JackDriver::Open capture_driver_name = hw:0
Sun Jun 6 22:53:54 2010: Jack: JackDriver::Open playback_driver_name = hw:0
Sun Jun 6 22:53:54 2010: Jack: JackEngine::ClientInternalOpen: name = system
Sun Jun 6 22:53:54 2010: Jack: JackEngine::AllocateRefNum ref = 0
Sun Jun 6 22:53:54 2010: Jack: JackFifo::Allocate name = /dev/shm/jack_fifo.1000_default_system
Sun Jun 6 22:53:54 2010: Jack: JackEngine::NotifyAddClient: name = system
Sun Jun 6 22:53:54 2010: Jack: JackGraphManager::SetBufferSize size = 1024
Sun Jun 6 22:53:54 2010: Jack: JackConnectionManager::DirectConnect first: ref1 = 0 ref2 = 0
Sun Jun 6 22:53:54 2010: Jack: JackGraphManager::ConnectRefNum cur_index = 0 ref1 = 0 ref2 = 0
Sun Jun 6 22:53:54 2010: Jack: JackDriver::SetupDriverSync driver sem in flush mode
Sun Jun 6 22:53:54 2010: [1m[31mERROR: Failed to acquire device name : Audio0 error : Input/output error[0m
Sun Jun 6 22:53:54 2010: [1m[31mERROR: Audio device hw:0 cannot be acquired, trying to open it anyway...[0m
Sun Jun 6 22:53:54 2010: creating alsa driver ... hw:0|hw:0|1024|2|44100|6|2|nomon|hwmeter|-|32bit
Sun Jun 6 22:53:54 2010: Using ALSA driver NFORCE running on card 0 - NVidia CK804 with ALC850 at irq 23
Sun Jun 6 22:53:54 2010: configuring for 44100Hz, period = 1024 frames (23.2 ms), buffer = 2 periods
Sun Jun 6 22:53:54 2010: ALSA: final selected sample format for capture: 16bit little-endian
Sun Jun 6 22:53:54 2010: [1m[31mERROR: ALSA: cannot set channel count to 6 for capture[0m
Sun Jun 6 22:53:54 2010: [1m[31mERROR: ALSA: cannot configure capture channel[0m
Sun Jun 6 22:53:54 2010: Jack: JackDriver::Close
Sun Jun 6 22:53:54 2010: Jack: JackConnectionManager::DirectDisconnect last: ref1 = 0 ref2 = 0
Sun Jun 6 22:53:54 2010: Jack: JackGraphManager::DisconnectRefNum cur_index = 0 ref1 = 0 ref2 = 0
Sun Jun 6 22:53:54 2010: Jack: JackEngine::ClientCloseAux ref = 0
Sun Jun 6 22:53:54 2010: Jack: JackGraphManager::RemoveAllPorts ref = 0
Sun Jun 6 22:53:54 2010: Jack: JackFifo::Destroy name = /dev/shm/jack_fifo.1000_default_system
Sun Jun 6 22:53:54 2010: Jack: ~JackDriver
Sun Jun 6 22:53:54 2010: [1m[31mERROR: Cannot initialize driver[0m
<snip>
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PaulBredbury
Watchman
Joined: 14 Jul 2005
Posts: 7310
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| Posted: Sun Jun 06, 2010 5:07 pm Post subject: Re: JACK > jack-rack + 6 channel LADSPA plugin |
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| maruko wrote: | | "virtual surround" LADSPA plugin |
So which plugin is that, then?
I suggest my config.
Edit: 6 inputs and 2 outputs? So that's 5.1 to stereo, right? |
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maruko
n00b
Joined: 02 Jul 2005
Posts: 4
Location: Philippines
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| Posted: Thu Jul 22, 2010 8:48 am Post subject: |
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| I'm sorry if I wasn't able to reply right away. I've decided to not to use the said LADSPA plugin anymore. I was using a plugin which allows me to use VSTs which allows me to use VSTs thru LADSPA. I think it was called DSSI-VST? The VST plugin I was trying to use is called Isone Pro. I decided that I don't like it and just use ALSA directly now. |
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