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103 lines
2.2 KiB
Plaintext
103 lines
2.2 KiB
Plaintext
# Reference ALSA routing for the Debian laptop rover profile.
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#
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# This intentionally mirrors pi/asound.conf as closely as a normal PC can:
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# one fixed hardware card, one dmix playback engine, separate softvol controls
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# for TTS/horn/forwarded audio, and a raw capture alias for the rover mic.
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#
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# The Debian laptop installer no longer copies this file directly. It renders
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# /etc/asound.conf from /etc/roverd-installer.env so laptops with HDMI as card 0
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# can point these same logical mixer devices at their real speaker card.
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#
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# This is NOT meant to preserve normal desktop audio behavior. The laptop rover
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# installer disables PipeWire/PulseAudio so roverd owns the audio hardware like
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# the Raspberry Pi rover does. If the laptop's real speaker/mic card is not ALSA
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# card 0, rerun the Debian laptop installer and answer the ALSA prompts using:
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# aplay -l
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# arecord -l
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# Mix multiple playback clients in software with a fixed low-cost format.
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pcm.dmixer {
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type dmix
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ipc_key 1024
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ipc_perm 0666
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slave {
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pcm "hw:0,0"
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format S16_LE
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rate 16000
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channels 1
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period_time 0
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period_size 1024
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buffer_size 4096
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}
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}
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# TTS volume control (used by default playback path).
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pcm.tts_softvol {
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type softvol
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slave.pcm "dmixer"
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control {
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name "TTSMaster"
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card 0
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}
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min_dB -60.0
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max_dB 12.0
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}
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# Horn volume control.
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pcm.horn_softvol {
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type softvol
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slave.pcm "dmixer"
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control {
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name "HornMaster"
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card 0
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}
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min_dB -60.0
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max_dB 12.0
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}
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# Forwarded audio volume control.
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pcm.forward_softvol {
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type softvol
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slave.pcm "dmixer"
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control {
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name "ForwardMaster"
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card 0
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}
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min_dB -60.0
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max_dB 12.0
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}
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# Per-source playback PCMs.
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pcm.tts {
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type plug
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slave.pcm "tts_softvol"
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}
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pcm.horn {
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type plug
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slave.pcm "horn_softvol"
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}
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pcm.forward {
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type plug
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slave.pcm "forward_softvol"
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}
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# Capture alias used by laptop rover config defaults.
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pcm.rovermic {
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type plug
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slave.pcm "hw:0,0"
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}
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# Defaults: TTS direct playback + raw capture on the dedicated laptop sound card.
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pcm.!default {
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type asym
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playback.pcm "tts"
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capture.pcm "rovermic"
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}
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ctl.!default {
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type hw
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card 0
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}
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