On Friday 19 December 2008 11:41:51 Darron Broad wrote: > In message <200812191127.35952.lawrence@xxxxxxxxxxxxxxxx>, Lawrence Rust > wrote: > > Hiya. > > >On Thursday 18 December 2008 20:17:41 Darron Broad wrote: > >> hi > >> > >> >I have a Hauppauge Nova-S-plus PCI card and it works great with > >> > satellite reception. However, I would also like to use it with an > >> > external DVB-T box that outputs composite video and line audio but > >> > when I select the composite video input I can see a picture but get no > >> > sound. > >> > > >> >I'm using kernel version 2.6.24 so I dug around those sources and I see > >> > in cx88-cards.c that there's no provision for line audio in. However, > >> > the latest v4l top of tree sources have added support for I2S audio > >> > input and 'audioroute's. > >> > > >> >So I modded my 2.6.24 sources to support the external ADC and enable > >> > I2S audio input using the struct cx88_board cx88_boards.extadc flag, > >> > similar to the changes made in the current top of tree. This now > >> > means that I can watch DVB-T :-) I don't believe the changes affect > >> > any other cards. > >> > > >> >I would like to see support added for the Nova-S-Plus audio line input > >> > in the kernel tree asap. What's the best way of achieving this? I > >> > can supply a diff for 2.6.24 or the current top of tree. > >> > >> I would be interested to see what changes you made to achieve this > >> and am able to test. Please share your patch for testing. > >> > >> Thanks > >> darron > > > >Diffs for linux kernel 2.6.24 andcd out/linux.x86/release/bin/src the current v4l tip attached. > > > >The change for the current top of tree is minimal - just a few lines in > > the static configuration data of cx88-cards.c. > > > >The changes for 2.6.24 parallel the changes made for audioroutes in the > >current tip. > > > >Note the changes to cx88_alsa.c to remove the tuner volume control if > > there's no TV tuner and to re-group the switches more logically. I was > > thinking of adding some code to adjust the WM8775 gain - what do you > > think? > > > >HTH. > > Thanks for that Lawrence. I will test this soon. > > With regard to the gain control on the WM8775, perhaps you can > look at this: > > http://hg.kewl.org/v4l-dvb-test/shortlog > > You can find some patches here: > http://hg.kewl.org/v4l-dvb-test/rev/c1d603af3bef > http://hg.kewl.org/v4l-dvb-test/rev/302d51bf2baf > http://hg.kewl.org/v4l-dvb-test/rev/8b24b8211fc9 > > Which sound like they would do what you desire? > > I should rebuild these patches soon to for better testing purposes > but in the meantime please test if you are interested. Yes, these patches look _exactly_ like what I was thinking of. The control of audio overload was my main priority, together with a nice ALSA interface. I'll give them a try and report back. NB I can build current top of tree, but I'm only testing with my Nova card on kernel 2.6.24. I don't have a proper test m/c setup to try anything too bleeding edge. Thanks. -- Lawrence Rust _______________________________________________ linux-dvb mailing list linux-dvb@xxxxxxxxxxx http://www.linuxtv.org/cgi-bin/mailman/listinfo/linux-dvb
