thread 'thread_play_sound' panicked at 'called `Result::unwrap()` on an `Err` value: DefaultStreamConfigError(BackendSpecific { err: BackendSpecificError { description: "ALSA function 'snd_pcm_open' failed with error 'EHOSTDOWN: Host is down'" } })', src/notifications/types/sound.rs:...
I am trying to implement an Android Application where it makes use of tinyalsa: pcm_open() API. I get "cannot open device (0) for card(2): Permission denied" error when I tried to launch the application from Android Studio that attempts to open an audio stream fro...
最近想研究一下树莓派3b的一些底层驱动的代码，比较好的就是直接可以看树莓派3b的实现。因为usb驱动，...
检查/dev/snd/ 目录下是否存在 PCM 设备文件(如 pcmC0D0p、pcmC0D0c 等)。 使用arecord -l 或aplay -l 命令列出所有可用的音频设备,确认 PCM 设备是否被正确识别。 查看pcm_open 函数的调用参数是否正确: 检查调用 pcm_open 函数时传递的参数,确保设备名称和访问模式(如只读、只写或读写)是正确的。 示...
很有可能你同时装了Hyprland和KDE plasma两种桌面环境,其中一个用pipewire作为音频管理器,另一个用pulseaudio作为音频管理器,这两者会发生冲突,导致奇怪的音频问题出现。 解决方案: 安装pipewire-pulse以替换掉pulseaudio, 解决音频管理器的冲突即可。 __EOF__...
==> snd_pcm_open(&handle, pcm_name, stream, open_mode); //打开一路pcm,刷新config配置 如果是"default",同时type等于SND_CONFIG_TYPE_COMPOUND那么这里对应"empty" static const char *const build_in_pcms[] = { "adpcm", "alaw", "copy", "dmix", "file", "hooks", "hw", "ladspa", "...
bluetooth|bluetooth|1024|2|48000|0|0|nomon|swmeter|-|32bit ALSA lib control.c:1379:(snd_ctl_open_noupdate) Invalid CTL bluetooth control open "bluetooth" (No such file or directory) D: bluealsa-pcm.c:891: Getting BlueALSA PCM: PLAYBACK 40:ED:98:19:9C:33 a2dp D: bluealsa-pcm.c:...
snd_register_device_for_dev 创建"pcmC%iD%ip"或者"pcmC%iD%ic"设备节点,它的fops为snd_pcm_f_ops[2] snd_pcm_f_ops[2] ==> snd_pcm_playback_open或者snd_pcm_capture_open ==> snd_pcm_open或者oss的snd_pcm_oss_f_reg.snd_pcm_oss_open,这就对应/dev/dsp了 ...
snd_pcm_state_name((snd_pcm_state_t)val));return0; } makefile: .PHONY : rebuild clean CC:= mips-linux-gnu-gcc TARGET:= alsa_test.outOBJS:=alsa_test.o INCLUDE+= -I/usr/local/open_lib/include LIBS+= -lpthread -L/usr/local/open_lib/lib -lasound ...
Thanks! I think i got past that error, now it just says: cpiped: pcm.c:1245: snd_pcm_drain: Assertion 'pcm' failed. I think im naming the wrong hw in the config file. I'm using a PC motherboard with onboard line-in. What should be in my .asoundrc?