Alex, Thanks for good information. It sounds for transmit side. How about receive side? ---henry --- On Sun, 2/27/11, Alex Deucher <alexdeucher@xxxxxxxxx> wrote: > From: Alex Deucher <alexdeucher@xxxxxxxxx> > Subject: Re: audio utility could not detect hdmi device but codec device > To: "hong zhang" <henryzhang62@xxxxxxxxx> > Cc: devel@xxxxxxxxxxxxxxxxxxxxxx > Date: Sunday, February 27, 2011, 4:29 PM > On Sun, Feb 27, 2011 at 4:17 PM, hong > zhang <henryzhang62@xxxxxxxxx> > wrote: > > List, > > > > My TI SoC reference board lacks functionality of audio > over HDMI but does have video over HDMI. > > > > ALSA utility "aplay -l" does not display HDMI but does > display codec device. > > > > I am wondering if hdmi audio is not registered. If > yes, how to register it to make hdmi audio device displayed > by "aplay -l" > > > > Any help will be appreciated! > > > > To support audio over hdmi, you need to read back the hdmi > edid > extensions from the monitor to determine what it's audio > capabilities > are and then you need to generate the hdmi infoframe > packets and mix > the sound data into the hdmi data stream. You need > hdmi hardware that > is capable of generating the packets and mixing the audio > stream. > > Alex > > > --henry > > > > > > > > _______________________________________________ > > devel mailing list > > devel@xxxxxxxxxxxxxxxxxxxxxx > > http://driverdev.linuxdriverproject.org/mailman/listinfo/devel > > > _______________________________________________ devel mailing list devel@xxxxxxxxxxxxxxxxxxxxxx http://driverdev.linuxdriverproject.org/mailman/listinfo/devel
