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Re: Plugin/unplugin headphones on the MacBook
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Re: Plugin/unplugin headphones on the MacBook


  • Subject: Re: Plugin/unplugin headphones on the MacBook
  • From: Jeff Moore <email@hidden>
  • Date: Tue, 6 Jun 2006 11:36:01 -0700

I haven't seen a MacBook personally, but if it is like the MacBook Pro, the driver sends a major engine change and adjusts a bunch of controls (some change value, others come and go depending on what was plugged in). To the outside world, it pretty much looks like the only change was that the data source changed from "internal speakers" to "line out" or "digital out" if you plug in the funky optical cable.

On Jun 6, 2006, at 1:21 AM, Stéphane Letz wrote:

One of our user report a problem that occurs when plugin/unplugin headphones on the MacBook. It seems that the HAL audio context is changed in a way that disturb our user-land CoreAudio driver, that then is removed from the available drivers in the SoundPreferences for example.

What happens exactly when headphones are plugged/unplugged on the MacBook? Do we need to handle a specific notification coming from the HAL?


--

Jeff Moore
Core Audio
Apple


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References: 
 >Plugin/unplugin headphones on the MacBook (From: Stéphane Letz <email@hidden>)

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