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在Android上运行ALSA延迟基准测试

android audio

在Android上运行ALSA延迟基准测试,android,audio,alsa,cyanogenmod,low-latency,Android,Audio,Alsa,Cyanogenmod,Low Latency,我正试图使用ALSA的latency.c微基准测试应用程序（）在Android上对其延迟进行基准测试。但是，延迟应用程序始终无法打开设备上的任何音频设备（默认和其他选项） 运行延迟时的输出： latency -P "hw:0,0" -C "hw:0,0" -r 44100 -m 128 -M 128 -p -s 1 < WARNING: linker: ./latency: unused DT entry: type 0x1d arg 0x505 WARNING: linker

我正试图使用ALSA的latency.c微基准测试应用程序（）在Android上对其延迟进行基准测试。但是，延迟应用程序始终无法打开设备上的任何音频设备（默认和其他选项）

运行延迟时的输出：

latency -P "hw:0,0" -C "hw:0,0" -r 44100 -m 128 -M 128 -p -s 1       <
WARNING: linker: ./latency: unused DT entry: type 0x1d arg 0x505
WARNING: linker: ./latency: unused DT entry: type 0x6ffffffe arg 0xd3c
WARNING: linker: ./latency: unused DT entry: type 0x6fffffff arg 0x1
Scheduler set to Round Robin with priority 99...
Playback device is hw:0,0
Capture device is hw:0,0
Parameters are 44100Hz, S16_LE, 2 channels, non-blocking mode
Poll mode: yes
Loop limit is 44100 frames, minimum latency = 128, maximum latency = 128
Playback open error: Invalid argument
如何让此应用程序在设备上运行并为我提供延迟输出值？我知道音频可以在这个设备上工作，因为我可以使用内置的音频播放器播放.wav文件。它似乎不适用于我编译的aplay版本（给出了相同的播放打开错误）

另一方面，找出哪个音频设备对应于耳机和/或扬声器/麦克风的正确方法是什么？我目前一直在尝试通过反复试验来找到这些

有关该平台的一些详细信息：

Unlocked Motorola Moto G LTE (codename peregrine)
OS: Cyanogenmod 12.1 with root privileges (based on Android 5.1 Lollipop)
Kernel: Linux localhost 3.4.42-g832c593 #1 SMP PREEMPT armv7l GNU/Linux
ALSA-lib & ALSA-utils: 1.1.0
编辑

$arecord-l的输出


card 0: msm8226tapan930 [msm8226-tapan9302-snd-card], device 0: MultiMedia1 (*) []
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 0: msm8226tapan930 [msm8226-tapan9302-snd-card], device 1: MultiMedia2 (*) []
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 0: msm8226tapan930 [msm8226-tapan9302-snd-card], device 2: CS-Voice (*) []
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 0: msm8226tapan930 [msm8226-tapan9302-snd-card], device 3: VoIP (*) []
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 0: msm8226tapan930 [msm8226-tapan9302-snd-card], device 5: SLIMBUS_0 Hostless (*) []
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 0: msm8226tapan930 [msm8226-tapan9302-snd-card], device 6: INT_FM Hostless (*) []
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 0: msm8226tapan930 [msm8226-tapan9302-snd-card], device 8: AFE-PROXY TX msm-stub-tx-8 []
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 0: msm8226tapan930 [msm8226-tapan9302-snd-card], device 10: AUXPCM Hostless (*) []
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 0: msm8226tapan930 [msm8226-tapan9302-snd-card], device 11: SLIMBUS_1 Hostless (*) []
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 0: msm8226tapan930 [msm8226-tapan9302-snd-card], device 12: SLIMBUS_3 Hostless (*) []
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 0: msm8226tapan930 [msm8226-tapan9302-snd-card], device 13: SLIMBUS_4 Hostless (*) []
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 0: msm8226tapan930 [msm8226-tapan9302-snd-card], device 14: Voice2 (*) []
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 0: msm8226tapan930 [msm8226-tapan9302-snd-card], device 15: MultiMedia5 (*) []
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 0: msm8226tapan930 [msm8226-tapan9302-snd-card], device 16: MultiMedia9 (*) []
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 0: msm8226tapan930 [msm8226-tapan9302-snd-card], device 17: VoLTE (*) []
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 0: msm8226tapan930 [msm8226-tapan9302-snd-card], device 18: QCHAT (*) []
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 0: msm8226tapan930 [msm8226-tapan9302-snd-card], device 19: Listen Audio Service (*) []
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 0: msm8226tapan930 [msm8226-tapan9302-snd-card], device 20: COMPR8 (*) []
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 0: msm8226tapan930 [msm8226-tapan9302-snd-card], device 22: (Internal BT-SCO Capture) []
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 0: msm8226tapan930 [msm8226-tapan9302-snd-card], device 24: (Internal FM Capture) []
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 0: msm8226tapan930 [msm8226-tapan9302-snd-card], device 26: (AFE Capture) []
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 0: msm8226tapan930 [msm8226-tapan9302-snd-card], device 28: (AUX PCM Playback) []
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 0: msm8226tapan930 [msm8226-tapan9302-snd-card], device 29: (AUX PCM Capture) []
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 0: msm8226tapan930 [msm8226-tapan9302-snd-card], device 30: (Voice Uplink Capture) []
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 0: msm8226tapan930 [msm8226-tapan9302-snd-card], device 31: (Voice Downlink Capture) []
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 0: msm8226tapan930 [msm8226-tapan9302-snd-card], device 35: (Slimbus Capture) []
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 0: msm8226tapan930 [msm8226-tapan9302-snd-card], device 37: (Slimbus1 Capture) []
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 0: msm8226tapan930 [msm8226-tapan9302-snd-card], device 39: (Slimbus3 Capture) []
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 0: msm8226tapan930 [msm8226-tapan9302-snd-card], device 41: (Slimbus4 Capture) []
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 0: msm8226tapan930 [msm8226-tapan9302-snd-card], device 42: (Slimbus5 Capture) []
  Subdevices: 1/1
  Subdevice #0: subdevice #0



WARNING: linker: ./aplay: unused DT entry: type 0x6ffffffe arg 0x1d20
WARNING: linker: ./aplay: unused DT entry: type 0x6fffffff arg 0x1
card 0: msm8226tapan930 [msm8226-tapan9302-snd-card], device 0: MultiMedia1 (*) []
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 0: msm8226tapan930 [msm8226-tapan9302-snd-card], device 1: MultiMedia2 (*) []
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 0: msm8226tapan930 [msm8226-tapan9302-snd-card], device 2: CS-Voice (*) []
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 0: msm8226tapan930 [msm8226-tapan9302-snd-card], device 3: VoIP (*) []
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 0: msm8226tapan930 [msm8226-tapan9302-snd-card], device 4: LPA (*) []
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 0: msm8226tapan930 [msm8226-tapan9302-snd-card], device 5: SLIMBUS_0 Hostless (*) []
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 0: msm8226tapan930 [msm8226-tapan9302-snd-card], device 6: INT_FM Hostless (*) []
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 0: msm8226tapan930 [msm8226-tapan9302-snd-card], device 7: AFE-PROXY RX msm-stub-rx-7 []
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 0: msm8226tapan930 [msm8226-tapan9302-snd-card], device 9: (COMPR) []
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 0: msm8226tapan930 [msm8226-tapan9302-snd-card], device 10: AUXPCM Hostless (*) []
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 0: msm8226tapan930 [msm8226-tapan9302-snd-card], device 11: SLIMBUS_1 Hostless (*) []
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 0: msm8226tapan930 [msm8226-tapan9302-snd-card], device 12: SLIMBUS_3 Hostless (*) []
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 0: msm8226tapan930 [msm8226-tapan9302-snd-card], device 13: SLIMBUS_4 Hostless (*) []
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 0: msm8226tapan930 [msm8226-tapan9302-snd-card], device 14: Voice2 (*) []
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 0: msm8226tapan930 [msm8226-tapan9302-snd-card], device 15: MultiMedia5 (*) []
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 0: msm8226tapan930 [msm8226-tapan9302-snd-card], device 16: MultiMedia9 (*) []
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 0: msm8226tapan930 [msm8226-tapan9302-snd-card], device 17: VoLTE (*) []
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 0: msm8226tapan930 [msm8226-tapan9302-snd-card], device 18: QCHAT (*) []
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 0: msm8226tapan930 [msm8226-tapan9302-snd-card], device 20: COMPR8 (*) []
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 0: msm8226tapan930 [msm8226-tapan9302-snd-card], device 21: (Internal BT-SCO Playback) []
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 0: msm8226tapan930 [msm8226-tapan9302-snd-card], device 23: (Internal FM Playback) []
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 0: msm8226tapan930 [msm8226-tapan9302-snd-card], device 25: (AFE Playback) []
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 0: msm8226tapan930 [msm8226-tapan9302-snd-card], device 27: HDMI_RX_HOSTLESS (*) []
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 0: msm8226tapan930 [msm8226-tapan9302-snd-card], device 28: (AUX PCM Playback) []
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 0: msm8226tapan930 [msm8226-tapan9302-snd-card], device 29: (AUX PCM Capture) []
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 0: msm8226tapan930 [msm8226-tapan9302-snd-card], device 32: (Voice Farend Playback) []
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 0: msm8226tapan930 [msm8226-tapan9302-snd-card], device 33: (Voice2 Farend Playback) []
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 0: msm8226tapan930 [msm8226-tapan9302-snd-card], device 34: (Slimbus Playback) []
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 0: msm8226tapan930 [msm8226-tapan9302-snd-card], device 36: (Slimbus1 Playback) []
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 0: msm8226tapan930 [msm8226-tapan9302-snd-card], device 38: (Slimbus3 Playback) []
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 0: msm8226tapan930 [msm8226-tapan9302-snd-card], device 40: (Slimbus4 Playback) []
  Subdevices: 1/1
  Subdevice #0: subdevice #0



$aplay-l的输出


card 0: msm8226tapan930 [msm8226-tapan9302-snd-card], device 0: MultiMedia1 (*) []
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 0: msm8226tapan930 [msm8226-tapan9302-snd-card], device 1: MultiMedia2 (*) []
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 0: msm8226tapan930 [msm8226-tapan9302-snd-card], device 2: CS-Voice (*) []
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 0: msm8226tapan930 [msm8226-tapan9302-snd-card], device 3: VoIP (*) []
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 0: msm8226tapan930 [msm8226-tapan9302-snd-card], device 5: SLIMBUS_0 Hostless (*) []
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 0: msm8226tapan930 [msm8226-tapan9302-snd-card], device 6: INT_FM Hostless (*) []
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 0: msm8226tapan930 [msm8226-tapan9302-snd-card], device 8: AFE-PROXY TX msm-stub-tx-8 []
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 0: msm8226tapan930 [msm8226-tapan9302-snd-card], device 10: AUXPCM Hostless (*) []
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 0: msm8226tapan930 [msm8226-tapan9302-snd-card], device 11: SLIMBUS_1 Hostless (*) []
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 0: msm8226tapan930 [msm8226-tapan9302-snd-card], device 12: SLIMBUS_3 Hostless (*) []
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 0: msm8226tapan930 [msm8226-tapan9302-snd-card], device 13: SLIMBUS_4 Hostless (*) []
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 0: msm8226tapan930 [msm8226-tapan9302-snd-card], device 14: Voice2 (*) []
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 0: msm8226tapan930 [msm8226-tapan9302-snd-card], device 15: MultiMedia5 (*) []
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 0: msm8226tapan930 [msm8226-tapan9302-snd-card], device 16: MultiMedia9 (*) []
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 0: msm8226tapan930 [msm8226-tapan9302-snd-card], device 17: VoLTE (*) []
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 0: msm8226tapan930 [msm8226-tapan9302-snd-card], device 18: QCHAT (*) []
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 0: msm8226tapan930 [msm8226-tapan9302-snd-card], device 19: Listen Audio Service (*) []
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 0: msm8226tapan930 [msm8226-tapan9302-snd-card], device 20: COMPR8 (*) []
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 0: msm8226tapan930 [msm8226-tapan9302-snd-card], device 22: (Internal BT-SCO Capture) []
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 0: msm8226tapan930 [msm8226-tapan9302-snd-card], device 24: (Internal FM Capture) []
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 0: msm8226tapan930 [msm8226-tapan9302-snd-card], device 26: (AFE Capture) []
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 0: msm8226tapan930 [msm8226-tapan9302-snd-card], device 28: (AUX PCM Playback) []
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 0: msm8226tapan930 [msm8226-tapan9302-snd-card], device 29: (AUX PCM Capture) []
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 0: msm8226tapan930 [msm8226-tapan9302-snd-card], device 30: (Voice Uplink Capture) []
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 0: msm8226tapan930 [msm8226-tapan9302-snd-card], device 31: (Voice Downlink Capture) []
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 0: msm8226tapan930 [msm8226-tapan9302-snd-card], device 35: (Slimbus Capture) []
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 0: msm8226tapan930 [msm8226-tapan9302-snd-card], device 37: (Slimbus1 Capture) []
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 0: msm8226tapan930 [msm8226-tapan9302-snd-card], device 39: (Slimbus3 Capture) []
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 0: msm8226tapan930 [msm8226-tapan9302-snd-card], device 41: (Slimbus4 Capture) []
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 0: msm8226tapan930 [msm8226-tapan9302-snd-card], device 42: (Slimbus5 Capture) []
  Subdevices: 1/1
  Subdevice #0: subdevice #0



WARNING: linker: ./aplay: unused DT entry: type 0x6ffffffe arg 0x1d20
WARNING: linker: ./aplay: unused DT entry: type 0x6fffffff arg 0x1
card 0: msm8226tapan930 [msm8226-tapan9302-snd-card], device 0: MultiMedia1 (*) []
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 0: msm8226tapan930 [msm8226-tapan9302-snd-card], device 1: MultiMedia2 (*) []
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 0: msm8226tapan930 [msm8226-tapan9302-snd-card], device 2: CS-Voice (*) []
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 0: msm8226tapan930 [msm8226-tapan9302-snd-card], device 3: VoIP (*) []
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 0: msm8226tapan930 [msm8226-tapan9302-snd-card], device 4: LPA (*) []
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 0: msm8226tapan930 [msm8226-tapan9302-snd-card], device 5: SLIMBUS_0 Hostless (*) []
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 0: msm8226tapan930 [msm8226-tapan9302-snd-card], device 6: INT_FM Hostless (*) []
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 0: msm8226tapan930 [msm8226-tapan9302-snd-card], device 7: AFE-PROXY RX msm-stub-rx-7 []
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 0: msm8226tapan930 [msm8226-tapan9302-snd-card], device 9: (COMPR) []
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 0: msm8226tapan930 [msm8226-tapan9302-snd-card], device 10: AUXPCM Hostless (*) []
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 0: msm8226tapan930 [msm8226-tapan9302-snd-card], device 11: SLIMBUS_1 Hostless (*) []
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 0: msm8226tapan930 [msm8226-tapan9302-snd-card], device 12: SLIMBUS_3 Hostless (*) []
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 0: msm8226tapan930 [msm8226-tapan9302-snd-card], device 13: SLIMBUS_4 Hostless (*) []
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 0: msm8226tapan930 [msm8226-tapan9302-snd-card], device 14: Voice2 (*) []
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 0: msm8226tapan930 [msm8226-tapan9302-snd-card], device 15: MultiMedia5 (*) []
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 0: msm8226tapan930 [msm8226-tapan9302-snd-card], device 16: MultiMedia9 (*) []
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 0: msm8226tapan930 [msm8226-tapan9302-snd-card], device 17: VoLTE (*) []
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 0: msm8226tapan930 [msm8226-tapan9302-snd-card], device 18: QCHAT (*) []
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 0: msm8226tapan930 [msm8226-tapan9302-snd-card], device 20: COMPR8 (*) []
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 0: msm8226tapan930 [msm8226-tapan9302-snd-card], device 21: (Internal BT-SCO Playback) []
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 0: msm8226tapan930 [msm8226-tapan9302-snd-card], device 23: (Internal FM Playback) []
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 0: msm8226tapan930 [msm8226-tapan9302-snd-card], device 25: (AFE Playback) []
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 0: msm8226tapan930 [msm8226-tapan9302-snd-card], device 27: HDMI_RX_HOSTLESS (*) []
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 0: msm8226tapan930 [msm8226-tapan9302-snd-card], device 28: (AUX PCM Playback) []
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 0: msm8226tapan930 [msm8226-tapan9302-snd-card], device 29: (AUX PCM Capture) []
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 0: msm8226tapan930 [msm8226-tapan9302-snd-card], device 32: (Voice Farend Playback) []
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 0: msm8226tapan930 [msm8226-tapan9302-snd-card], device 33: (Voice2 Farend Playback) []
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 0: msm8226tapan930 [msm8226-tapan9302-snd-card], device 34: (Slimbus Playback) []
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 0: msm8226tapan930 [msm8226-tapan9302-snd-card], device 36: (Slimbus1 Playback) []
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 0: msm8226tapan930 [msm8226-tapan9302-snd-card], device 38: (Slimbus3 Playback) []
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 0: msm8226tapan930 [msm8226-tapan9302-snd-card], device 40: (Slimbus4 Playback) []
  Subdevices: 1/1
  Subdevice #0: subdevice #0



这非常依赖于硬件。显示
aplay-l
和
arecord-l
的输出。我将
aplay-l
和
arecord-l
的输出添加到问题的末尾，这是一个有趣的硬件。我猜您必须为设备配置一些混音器控件，以便将捕获的数据路由到正确的设备，不管它是什么。@CL:这是一款摩托罗拉android手机。我对ALSA的设置还比较陌生，尤其是当它出现问题时。你知道我可以在哪里读到关于混音器控件及其工作原理的信息吗？这取决于硬件，可能在任何地方都没有记录。