uid=20564848&do=blog&cuid=2116725 aplay.c ==> main ==> 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...
uid=20564848&do=blog&cuid=2116725 aplay.c ==> main ==> 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...
==> snd_pcm_new(&pcm, SND_PCM_TYPE_HW, name, info.stream, mode); pcm->ops = &snd_pcm_hw_ops; pcm->fast_ops = &snd_pcm_hw_fast_ops; static int snd_pcm_hw_mmap_control(snd_pcm_t *pcm) { snd_pcm_hw_t *hw = pcm->private_data; void *ptr; int err; if (hw->sync_p...
* sequence of commands is possible: START STOP STOP. * So do not unconditionally use refcounting functions in the trigger * function, e.g. clk_enable/disable. */int (*trigger)(struct snd_pcm_substream *, int, struct snd_soc_dai *); int (*bespoke_trigger)(struct snd_pcm_substream *...
Hi guys, I've got "ALSA lib pcm.c:7339:(snd_pcm_recover) underrun occurred" in todays master (FreeRDP version 1.1.0-dev (git 1.0.1-1519-g1ce9e)). I'm using these parameters: xfreerdp /u:user /vc:rdpsnd,sys:alsa,dev:default /mic +clipboar...
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:...
PCM Interface (/dev/snd/pcmCXDX) Raw MIDI Interface (/dev/snd/midiCXDX) Sequencer Interface (/dev/snd/seq) Timer Interface (/dev/snd/timer 这里存在的问题,我们并不是是对这些设备节点进行访问来进行录音及播放,而是采用例如 default 或者 plughw:0,0 等作为参数,而这些具体对应哪个物理设备,是不是...
int (*prepare)(struct snd_pcm_substream *,struct snd_soc_dai *);/* * NOTE: Commands passed to the trigger function are not necessarily * compatible with the current state of the dai. For example this * sequence of commands is possible: START STOP STOP.* So do not unconditionally use ...
uid=20564848&do=blog&cuid=2116725 aplay.c ==> main ==> 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...
Due to hardware design, the function of DSP can not be configured unless an ALSA PCM application initiates isochronous communication. snd-firewire-tascam-ctl-service Due to hardware design, most controls are not synchronized to hardware expectedly unless an ALSA PCM application initiates isochronous co...