Difference between revisions of "Audio in 1004"

Revision as of 21:54, 24 October 2012

Alternate sound configurations can be set in /etc/pluto.conf. MOST sound cards should work out of the box, and do not require this parameter. This parameter may be written by /usr/pluto/bin/nvidia-install.sh for various GT chipsets. This can be done at avwizard on the Audio Selector step 5, or at any time by running /usr/pluto/bin/SetupAudioVideo.sh NOTE: Audio/video should NOT be actively playing when running SetupAudioVideo.sh.

Auto-detection is attempted when specific packages are installed, or if the pluto.conf "AlternateSC" setting is null or = 0. In most cases, this value will never exist.

Below are example /etc/asound.conf files generated by these configurations. /etc/pluto/xine.conf files borrow the card# and device# (if any) in the same way as the asound.conf

AlternateSC = null : Most cards function without this parameter, this is the default state.

• Analog, Optical, Coax and HDMI are treated the way they always have been, given only the card# to write to the confs.
• nVidia GT series HDMI is automatically detected, and given a special set of values, also using the card# and the device#.

AlternateSC = 1 : Should only be necessary with some newer GT series nvidia that do not identify as second card or require backports, also supports other oddball devices.

• Analog, Optical, Coax, HDMI are given the card# and the device# to write to the confs.

AlternateSC = 2 : should only be necessary for HDMI oddballs that do not work under other two schemes, covers newer equipment.

• HDMI are given the GT series extended scheme, including both the card# and device#.

AlternateSC = null

Analog, Optical, Coax, HDMI

</etc/pluto/alsa/virtual_cards.conf>

pcm_slave.spdif_convert48k {
	pcm "spdif:0"
	rate 48000
}

pcm.spdif_playback {
	type plug
	slave spdif_convert48k
}

pcm_slave.hdmi_convert48k {
	pcm "hdmi:0"
	rate 48000
}

pcm.hdmi_playback {
	type plug
	slave hdmi_convert48k
}

pcm.asym_spdif {
	type asym
	playback.pcm "spdif_playback"
	capture.pcm "plughw:0"
}

pcm.asym_hdmi {
	type asym
	playback.pcm "hdmi_playback"
	capture.pcm "plughw:0"
}

pcm.asym_analog {
	type asym
	playback.pcm "plug:dmix:0"
	capture.pcm "plughw:0"
}
pcm.!default asym_analog

nVidia GT series HDMI

</etc/pluto/alsa/virtual_cards.conf>

pcm_slave.spdif_convert48k {
	pcm "spdif:1,7"
	rate 48000
}

pcm.spdif_playback {
	type plug
	slave spdif_convert48k
}

pcm_slave.hdmi_convert48k {
	pcm "hdmi:1,7"
	rate 48000
}

pcm.hdmi_playback {
	type plug
	slave hdmi_convert48k
}

pcm.asym_spdif {
	type asym
	playback.pcm "spdif_playback"
	capture.pcm "plughw:1,7"
}

pcm.asym_hdmi {
	type asym
	playback.pcm "hdmi_playback"
	capture.pcm "plughw:1,7"
}

pcm.asym_analog {
	type asym
	playback.pcm "plug:dmix:1,7"
	capture.pcm "plughw:1,7"
}

pcm.!hdmi {
	@args [ AES0 AES1 AES2 AES3 ]
	@args.AES0 {
		type integer
		# consumer, not-copyright, emphasis-none, mode=0
		default 0x04
	}
	@args.AES1 {
		type integer
		# original, PCM coder
		default 0x00
	}
	@args.AES2 {
		type integer
		# source and channel
		default 0x00
	}
	@args.AES3 {
		type integer
		# fs=48000Hz, clock accuracy=1000ppm
		default 0x00
	}
	type hooks
	slave.pcm {
		type hw
		card 1
		device 7
	}
	hooks.0 {
		type ctl_elems
		hook_args [
		{
			name "IEC958 Playback Default"
			lock true
			preserve true
			value [ $AES0 $AES1 $AES2 $AES3 ]
		}
		{
			name "IEC958 Playback Switch"
			lock true
			preserve true
			value true
		}
		]
	}
}
pcm.!default asym_hdmi

AlternateSC = 1

Analog, Optical, Coax, and HDMI

</etc/pluto/alsa/virtual_cards.conf>

pcm_slave.spdif_convert48k {
	pcm "spdif:0,3"
	rate 48000
}

pcm.spdif_playback {
	type plug
	slave spdif_convert48k
}

pcm_slave.hdmi_convert48k {
	pcm "hdmi:0,3"
	rate 48000
}

pcm.hdmi_playback {
	type plug
	slave hdmi_convert48k
}

pcm.asym_spdif {
	type asym
	playback.pcm "spdif_playback"
	capture.pcm "plughw:0,3"
}

pcm.asym_hdmi {
	type asym
	playback.pcm "hdmi_playback"
	capture.pcm "plughw:0,3"
}

pcm.asym_analog {
	type asym
	playback.pcm "plug:dmix:0,3"
	capture.pcm "plughw:0,3"
}
pcm.!default asym_hdmi

AlternateSC = 2

HDMI

</etc/pluto/alsa/virtual_cards.conf>

pcm_slave.spdif_convert48k {
	pcm "spdif:0,3"
	rate 48000
}

pcm.spdif_playback {
	type plug
	slave spdif_convert48k
}

pcm_slave.hdmi_convert48k {
	pcm "hdmi:0,3"
	rate 48000
}

pcm.hdmi_playback {
	type plug
	slave hdmi_convert48k
}

pcm.asym_spdif {
	type asym
	playback.pcm "spdif_playback"
	capture.pcm "plughw:0,3"
}

pcm.asym_hdmi {
	type asym
	playback.pcm "hdmi_playback"
	capture.pcm "plughw:0,3"
}

pcm.asym_analog {
	type asym
	playback.pcm "plug:dmix:0,3"
	capture.pcm "plughw:0,3"
}

pcm.!hdmi {
	@args [ AES0 AES1 AES2 AES3 ]
	@args.AES0 {
		type integer
		# consumer, not-copyright, emphasis-none, mode=0
		default 0x04
	}
	@args.AES1 {
		type integer
		# original, PCM coder
		default 0x00
	}
	@args.AES2 {
		type integer
		# source and channel
		default 0x00
	}
	@args.AES3 {
		type integer
		# fs=48000Hz, clock accuracy=1000ppm
		default 0x00
	}
	type hooks
	slave.pcm {
		type hw
		card 0
		device 3
	}
	hooks.0 {
		type ctl_elems
		hook_args [
		{
			name "IEC958 Playback Default"
			lock true
			preserve true
			value [ $AES0 $AES1 $AES2 $AES3 ]
		}
		{
			name "IEC958 Playback Switch"
			lock true
			preserve true
			value true
		}
		]
	}
}
pcm.!default asym_hdmi