thanks mr bob for your time, can i ask you what job you have? if you don't want don't tell me :)
On Dec 19, 11:53 pm, Bob Kerns <r...@acm.org> wrote: > I'm not about to spend my time on producing an example or even > tracking it down, as I just don't have the time. > > But it looks like Gaz Davidson has tracked one down -- though it's > different than the app on my phone, which appears to have been created > by HTC. This is good news for you, actually, since the one he located > is open source! > > You can't use the bluetooth antenna; that would be vastly too short. > It uses the headset wire as an antenna, which isn't really great as an > antenna, but is adequate if you have a good signal available in your > area. Just plugin in your headset! Phones that support this will have > the necessary connection from the headset wiring to the radio chip. > > What do I think about this? I think it's a cool application of some > cool technology for constructing radios. Not terribly important -- FM > will eventually be supplanted by radio over IP, IMO, and I don't often > listen to it anymore. But cool, nonetheless. > > The HTC radio app is pretty slickly done but basic. The Code Aurora > one I haven't seen, but from glancing at the code appears to have the > ability to record. I've often wanted an "instant replay" button on > radios like you can enable for TiVo (but is disabled/hidden by > default, grr...). Not that I have time to watch TV anymore either... > > On Dec 19, 3:14 am, wolf <wolfy1...@gmail.com> wrote:> do you can make me an > a example code ? and a sketch with a example > > phone how it works ? can i use the bluetooth as an antenna (yes i know > > it's have own API and it's works on 2.4 Ghz and the radio usually 87.5 > > to 108.0 MHz) ? do you know how to use the headphones as antenna or wi- > > fi or whatever ? what do you think about this? do you have το suggest > > me a site ? thanks mr bob for your time, you help me a lot!!!! sorry > > for my bad english ....... p.s. i am search wikipedia and other sites, > > i have make a simple plan. Do you work on FM Radio ? and how it's > > works low level phone access ? hmmm... maybe can help me very > > very ...... > > > On Dec 19, 1:44 am, Bob Kerns <r...@acm.org> wrote: > > > > Me, either. But I'll speculate as to how it works. > > > > Phones are radios. The radio signal is processed and decoded into > > > audio, and fed into the audio streams. The mechanisms for this are > > > open source. > > > > The FM radio signal is a radio signal that is processed and decoded > > > into audio. I bet it works much the same way. > > > > So, if you're serious about figuring it out, I'd start by going and > > > learning how the low level phone access works (i.e. how the audio is > > > routed from radio to audio mixer). That part is open source. > > > > Then I'd start reverse engineering, and find what calls the FM radio > > > app is making that are similar to how the phone works to set up the > > > audio stream for phone callls, and from there, I'd look for what's > > > different, that might be how it tells the radio what stream to route > > > to where. > > > > I doubt there's an easier way to do it, if that's how it's set up to > > > work. If, on the other hand, it's just exposed as a separate device, > > > I'd look at what device drivers are added to the kernel, and look to > > > see how the FM Radio app turns it on and accesses it. (And the FM > > > Radio functionality does have to be specifically turned on by the app. > > > I'm guessing it's normally disabled due to battery consumption, but I > > > don't really know). > > > > On Dec 18, 1:19 pm, Mark Murphy <mmur...@commonsware.com> wrote:> On Sat, > > > Dec 18, 2010 at 4:13 PM, wolf <wolfy1...@gmail.com> wrote: > > > > > thanks again mr bob, and how i can to view the code from FM Radio app? > > > > > I am not aware of any "FM Radio" apps for Android that are open source. -- You received this message because you are subscribed to the Google Groups "Android Developers" group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en
