On Sun, Feb 27, 2011 at 10:57 PM, hong zhang <henryzhang62@xxxxxxxxx> wrote: > Alex, > > Thanks for good information. It sounds for transmit side. How about receive side? Assuming you are sending the appropriate packets, the receiver (monitor, amplifier, etc.) should just work. Note that I've only worked on the transmit side, so I'm not that familiar with the receiver side. Alex > > ---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
