From: James Cloos <cloos@jhcloos.com>
To: Wu Fengguang <fengguang.wu@intel.com>
Cc: Keith Packard <keithp@keithp.com>,
"Wang, Zhenyu Z" <zhenyu.z.wang@intel.com>,
"intel-gfx@lists.freedesktop..."
<intel-gfx@lists.freedesktop.org>,
"alsa-devel@alsa-project.org" <alsa-devel@alsa-project.org>,
"dri-devel@lists.freedesktop.org"
<dri-devel@lists.freedesktop.org>,
Ben Skeggs <bskeggs@redhat.com>,
Jeremy Bush <contractfrombelow@gmail.com>,
Christopher White <c.white@pulseforce.com>,
"Fu, Michael" <michael.fu@intel.com>,
"Bossart, Pierre-louis" <pierre-louis.bossart@intel.com>
Subject: Re: [PATCH v5] drm/i915: pass ELD to HDMI/DP audio driver
Date: Sun, 04 Sep 2011 06:57:23 -0400 [thread overview]
Message-ID: <m3r53wa82c.fsf@jhcloos.com> (raw)
In-Reply-To: <20110903211510.GA11600@localhost> (Wu Fengguang's message of "Sun, 4 Sep 2011 05:15:10 +0800")
>>>>> "WF" == Wu Fengguang <fengguang.wu@intel.com> writes:
WF> ... If only the stereo playback capability is reported, the user
WF> won't be able to start 8-channel playback; if the 8-channel ELD is
WF> reported, then user space applications may send 8-channel samples
WF> down, however the user may actually be listening to the 2-channel
WF> monitor and not connecting speakers to the 8-channel monitor.
WF> Overall, it's more safe to report maximum profiles to the user
WF> space, so that the user can at least be able to do 8-channel
WF> playback if he want to.
Be aware that many TVs will either refuse the display anything or pop-up
an OSD warning whenever they receive hdmi audio which they cannot handle.
Sending 8-channel in your example may render the stereo-only monitor useless.
That said, one step at a time is reasonable. But eventually you will
require configurability and/or per-monitor audio control even when the
video is cloned.
-JimC
--
James Cloos <cloos@jhcloos.com> OpenPGP: 1024D/ED7DAEA6
next prev parent reply other threads:[~2011-09-04 10:58 UTC|newest]
Thread overview: 66+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-09-02 8:14 [PATCH v4] drm/i915: pass ELD to HDMI/DP audio driver Wu Fengguang
2011-09-02 8:29 ` Wu Fengguang
2011-09-03 21:15 ` [PATCH v5] " Wu Fengguang
2011-09-04 10:57 ` James Cloos [this message]
2011-09-05 1:19 ` Wu Fengguang
2011-09-04 11:11 ` [Intel-gfx] " Paul Menzel
2011-09-05 1:06 ` Wu Fengguang
2011-09-04 12:08 ` Chris Wilson
2011-09-05 1:14 ` Wu Fengguang
2011-09-05 11:04 ` Chris Wilson
2011-09-05 12:31 ` Wu Fengguang
[not found] ` <4E64C41B.5090309@pulseforce.com>
[not found] ` <20110905124730.GB794@localhost>
[not found] ` <4EA82DBD.9020301@pulseforce.com>
2011-10-27 19:57 ` Christopher White
2011-11-09 6:59 ` Wu Fengguang
2011-11-09 9:00 ` Christopher White
2011-11-09 9:30 ` Christopher White
2011-11-09 13:01 ` Wu Fengguang
[not found] ` <4EA9B6EF.9040305@pulseforce.com>
2011-11-01 11:36 ` Wu Fengguang
2011-11-01 17:00 ` Christopher White
2011-11-02 1:45 ` Wu Fengguang
2011-11-02 6:10 ` Sander Jansen
2011-11-02 7:35 ` Paul Menzel
2011-11-02 11:17 ` Sander Jansen
2011-11-02 14:26 ` Sander Jansen
2011-11-02 8:52 ` Wu Fengguang
2011-11-02 17:41 ` Keith Packard
2011-11-04 0:21 ` Tony Olivo
2011-11-05 0:20 ` Christopher White
2011-11-09 13:12 ` Wu Fengguang
2011-11-10 2:25 ` Christopher White
2011-11-10 3:27 ` Wu Fengguang
2011-11-10 4:10 ` Christopher White
2011-11-10 7:06 ` Wu Fengguang
2011-11-10 7:33 ` Wu Fengguang
2011-11-10 7:55 ` Wu Fengguang
2011-11-10 8:50 ` Wu Fengguang
2011-11-10 8:55 ` Christopher White
2011-11-10 11:00 ` Christopher White
2011-11-10 11:22 ` Takashi Iwai
2011-11-10 11:50 ` Christopher White
2011-11-10 11:53 ` Takashi Iwai
2011-11-10 12:39 ` Christopher White
2011-11-10 13:01 ` Takashi Iwai
2011-11-10 12:56 ` Wu Fengguang
2011-11-10 13:01 ` Christopher White
2011-11-10 13:17 ` Wu Fengguang
2011-11-10 13:34 ` Christopher White
2011-11-10 13:47 ` Wu Fengguang
2011-11-10 14:12 ` Wu Fengguang
2011-11-10 13:41 ` Takashi Iwai
2011-11-10 13:51 ` Wu Fengguang
2011-11-10 13:53 ` Wu Fengguang
2011-11-10 14:28 ` Takashi Iwai
2011-11-11 2:29 ` Wu Fengguang
2011-11-11 7:40 ` Takashi Iwai
2011-11-11 8:22 ` Wu Fengguang
2011-11-11 8:49 ` Takashi Iwai
2011-11-11 9:24 ` Wu Fengguang
2011-11-11 10:17 ` Takashi Iwai
2011-11-11 11:12 ` Wu Fengguang
2011-11-11 11:23 ` Takashi Iwai
2011-11-11 11:32 ` Wu Fengguang
2011-11-12 2:27 ` Wu Fengguang
2011-11-14 9:45 ` Takashi Iwai
2011-11-14 13:25 ` Wu Fengguang
2011-11-15 17:18 ` Purushothaman, Vijay A
2011-11-10 6:59 ` Wu Fengguang
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