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
