On Tue, Apr 22, 2008 at 8:07 AM, Harsha priya gupta <harshapriya@xxxxxxxxx> wrote: > I am not using the mmap method. How can i make sure that everytime a user > buffer is passed to driver, my copy function would be called? > > > On Mon, Apr 21, 2008 at 9:30 PM, Takashi Iwai <tiwai@xxxxxxx> wrote: > > > At Mon, 21 Apr 2008 19:27:45 +0530, > > Harsha priya gupta wrote: > > > > > > 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 > > > > 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. > > > > > > Takashi > > > > > > -- > -Harsha -- -Harsha _______________________________________________ Alsa-devel mailing list Alsa-devel@xxxxxxxxxxxxxxxx http://mailman.alsa-project.org/mailman/listinfo/alsa-devel
