[alsa-devel] snd_pcm_ops - .copy
tiwai at suse.de
Mon Apr 21 18:00:27 CEST 2008
At Mon, 21 Apr 2008 19:27:45 +0530,
Harsha priya gupta wrote:
> 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
Do you use a mmap method? If so, the copy callback won't be called.
The copy callback is only for copying the data from the user-space
buffer to the driver buffer, which is skipped via mmap.
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