Question

我的alsa配置了 Buffer_size = 2048和period_size = 1024

我正在使用IMX6板登机。我在板上运行二进制文件，从模拟输入和多播中捕获音频。其他板作为监听器运行，接收帧并使用＆＃34; snd_pcm_writei＆＃34;，帧被写入alsa。

现在播放延迟约1分钟，之后开始连续播放。我不确定是否会迷惑一下。

写入alsa后带有snd_pcm_avail（）的日志如下所示。请提供您的反馈。我怀疑的是，帧被写入alsa但alsa不会播放，因此下一帧被覆盖。

日志：

pcm avail val is :2048
pcm avail val is :-32
   (AVB Info)     01:29:01.029202  (Slave)               ==> Broken pipe
pcm avail val is :2048
pcm avail val is :-32
   (AVB Info)     01:29:02.030307  (Slave)               ==> Broken pipe
pcm avail val is :2048
pcm avail val is :-32
   (AVB Info)     01:29:03.031376  (Slave)               ==> Broken pipe
pcm avail val is :2048
pcm avail val is :-32
   (AVB Info)     01:29:04.032432  (Slave)               ==> Broken pipe
pcm avail val is :2048
pcm avail val is :-32
   (AVB Info)     01:29:05.033494  (Slave)               ==> Broken pipe
pcm avail val is :2048
pcm avail val is :-32
   (AVB Info)     01:29:06.034551  (Slave)               ==> Broken pipe
pcm avail val is :2048
pcm avail val is :-32
   (AVB Info)     01:29:07.035603  (Slave)               ==> Broken pipe
pcm avail val is :2048
pcm avail val is :-32
   (AVB Info)     01:29:08.036680  (Slave)               ==> Broken pipe
pcm avail val is :2048
pcm avail val is :-32
   (AVB Info)     01:29:09.037726  (Slave)               ==> Broken pipe
pcm avail val is :2048
pcm avail val is :-32

Alsa播放延迟

0 个答案: