[alsa-devel] snd_pcm_ops - .copy

Hi, I am trying to implement the .copy function of playack_ops in my driver. But when I try playing an mp3 file, my .copy's function code path was executing. Suddenly I do not see that function being called. Can anyone help me understand when the following code path will be executed

snd_pcm_lib_write_transfer substream->ops->copy

-Harsha