HDMI output under Linux
xavier.bestel at free.fr
Wed Jan 2 10:07:11 PST 2008
On Wed, 2008-01-02 at 17:49 +0000, Igor Mozolevsky wrote:
> On 02/01/2008, Keith Packard <keithp at keithp.com> wrote:
> > On Wed, 2008-01-02 at 17:04 +0530, JoJo jojo wrote:
> > > Wrong mailing list !
> > Actually, you need support in both places -- the video driver has to
> > expose some additional functionality to the alsa driver. HDMI audio
> > capabilities depend on the video mode as the audio packets are
> > transmitted during blanking intervals, making the available bandwidth
> > for audio depend on the video mode (yikes!).
> > > try here instead ...
> > > http://alsa.opensrc.org/DigitalOut
> > Surely some collaboration will be necessary to get HDMI audio working
> > though. For now, the only solution is to use the existing non-HDMI audio
> > outputs.
> Huh? So much for loose coupling and compartmentalization! The OS ought
> to provide abstraction to HDMI as two independent devices: one for
> video and one for audio, then it's upto the software (say, a dvd
> player) to decide how to use them. Why would you mangle audio with
Who said X11 ? Keith probably wants the kernel modesetting driver to
provide an alsa driver as well. A kernel driver coupled with more than 1
subsystem is common. All this happens without X11 being involved.
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