Differences

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--- en:bpi-r2pro:alsa [2022/02/13 19:05] – created frank
+++ en:bpi-r2pro:alsa [2023/06/08 17:06] (current) – external edit 127.0.0.1
@@ Line 1: / Line 1: @@
+====== ALSA ======
+===== output / speaker =====
+<code>
+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
+</code>
+==== input / microphone ====
+not yet working
+<code>
+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
+</code>
+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