en:bpi-r2pro:alsa
Table of Contents
ALSA
output / speaker
root@bpi-r2pro:~# aplay -l **** List of PLAYBACK Hardware Devices **** card 0: HDMI [HDMI], device 0: fe400000.i2s-i2s-hifi i2s-hifi-0 [fe400000.i2s-i2s-hifi i2s-hifi-0] Subdevices: 1/1 Subdevice #0: subdevice #0 card 1: Analog [Analog], device 0: fe410000.i2s-rk817-hifi rk817-hifi-0 [fe410000.i2s-rk817-hifi rk817-hifi-0] Subdevices: 1/1 Subdevice #0: subdevice #0 root@bpi-r2pro:~# aplay -L null Discard all samples (playback) or generate zero samples (capture) lavrate Rate Converter Plugin Using Libav/FFmpeg Library samplerate Rate Converter Plugin Using Samplerate Library speexrate Rate Converter Plugin Using Speex Resampler jack JACK Audio Connection Kit oss Open Sound System pulse PulseAudio Sound Server upmix Plugin for channel upmix (4,6,8) vdownmix Plugin for channel downmix (stereo) with a simple spacialization hw:CARD=HDMI,DEV=0 HDMI, fe400000.i2s-i2s-hifi i2s-hifi-0 Direct hardware device without any conversions plughw:CARD=HDMI,DEV=0 HDMI, fe400000.i2s-i2s-hifi i2s-hifi-0 Hardware device with all software conversions default:CARD=HDMI HDMI, fe400000.i2s-i2s-hifi i2s-hifi-0 Default Audio Device sysdefault:CARD=HDMI HDMI, fe400000.i2s-i2s-hifi i2s-hifi-0 Default Audio Device dmix:CARD=HDMI,DEV=0 HDMI, fe400000.i2s-i2s-hifi i2s-hifi-0 Direct sample mixing device usbstream:CARD=HDMI HDMI USB Stream Output hw:CARD=Analog,DEV=0 Analog, fe410000.i2s-rk817-hifi rk817-hifi-0 Direct hardware device without any conversions plughw:CARD=Analog,DEV=0 Analog, fe410000.i2s-rk817-hifi rk817-hifi-0 Hardware device with all software conversions default:CARD=Analog Analog, fe410000.i2s-rk817-hifi rk817-hifi-0 Default Audio Device sysdefault:CARD=Analog Analog, fe410000.i2s-rk817-hifi rk817-hifi-0 Default Audio Device dmix:CARD=Analog,DEV=0 Analog, fe410000.i2s-rk817-hifi rk817-hifi-0 Direct sample mixing device usbstream:CARD=Analog Analog USB Stream Output root@bpi-r2pro:~# speaker-test -Dhw:CARD=HDMI,DEV=0 -c2 -t wav speaker-test -Dhw:CARD=Analog,DEV=0 -c2 -t wav
input / microphone
not yet working
root@bpi-r2pro:~# arecord -l **** List of CAPTURE Hardware Devices **** card 1: Analog [Analog], device 0: fe410000.i2s-rk817-hifi rk817-hifi-0 [fe410000.i2s-rk817-hifi rk817-hifi-0] Subdevices: 1/1 Subdevice #0: subdevice #0 root@bpi-r2pro:~# arecord -L null Discard all samples (playback) or generate zero samples (capture) lavrate Rate Converter Plugin Using Libav/FFmpeg Library samplerate Rate Converter Plugin Using Samplerate Library speexrate Rate Converter Plugin Using Speex Resampler jack JACK Audio Connection Kit oss Open Sound System pulse PulseAudio Sound Server upmix Plugin for channel upmix (4,6,8) vdownmix Plugin for channel downmix (stereo) with a simple spacialization usbstream:CARD=HDMI HDMI USB Stream Output hw:CARD=Analog,DEV=0 Analog, fe410000.i2s-rk817-hifi rk817-hifi-0 Direct hardware device without any conversions plughw:CARD=Analog,DEV=0 Analog, fe410000.i2s-rk817-hifi rk817-hifi-0 Hardware device with all software conversions default:CARD=Analog Analog, fe410000.i2s-rk817-hifi rk817-hifi-0 Default Audio Device sysdefault:CARD=Analog Analog, fe410000.i2s-rk817-hifi rk817-hifi-0 Default Audio Device dsnoop:CARD=Analog,DEV=0 Analog, fe410000.i2s-rk817-hifi rk817-hifi-0 Direct sample snooping device usbstream:CARD=Analog Analog USB Stream Output root@bpi-r2pro:~# root@bpi-r2pro:~# arecord -D hw:1,0 --dump-hw-params Recording WAVE 'stdin' : Unsigned 8 bit, Rate 8000 Hz, Mono HW Params of device "hw:1,0": -------------------- ACCESS: MMAP_INTERLEAVED RW_INTERLEAVED FORMAT: S16_LE S24_LE S32_LE SUBFORMAT: STD SAMPLE_BITS: [16 32] FRAME_BITS: [32 64] CHANNELS: 2 RATE: [8000 96000] PERIOD_TIME: (333 8192000] PERIOD_SIZE: [32 65536] PERIOD_BYTES: [256 524288] PERIODS: [2 4096] BUFFER_TIME: (666 16384000] BUFFER_SIZE: [64 131072] BUFFER_BYTES: [256 524288] TICK_TIME: ALL -------------------- arecord: set_params:1343: Sample format non available Available formats: - S16_LE - S24_LE - S32_LE
this way it records, but not from headset-microphone, only onboard:
arecord -D hw:CARD=Analog,DEV=0 -c2 test.wav
play wav-file:
aplay -D hw:CARD=Analog,DEV=0 test.wav
en/bpi-r2pro/alsa.txt · Last modified: 2023/06/08 17:06 by 127.0.0.1