Using camera, speaker, or microphone

[tcTHEyounger]

Has anyone used the camera, speaker, or microphone in there c++? I just got an A780 and wrote a quick and dirty little program on the phone. My next trick is to record something from the microphone and play it out of the speakers. Anyone have any ideas on how to do this? Headers to look at?

Thanks

[rpconnect]

i haven't used the camera yet but the speakers and mic are pretty easy. Alebm was the guy who helped me out, if you are interested in some source code check out the source for the audanalyzer applet here http://www.motorolafans.com/index.ph...ewtopic&t=2478 .

After you untar the package look through the source file labeled mls_ir_est.cpp, it contains the sound calls that deal with playing back and recording audio. (Note that for recording you can only use the monaural audio device which has Fs limited to 8 or 16 k)

[kosta]

I managed to use microphone and speakers (using c, of course)

The trick is the following:

/dev/dsp can only do stereo, 8000 and 44100 Hz
/dev/dsp16 only mono, 8000 Hz (iirc)

both are 16-bit signed

you can read from /dev/dsp16, you'll get raw audio
you can write to /dev/dsp and dsp16, either in wav or raw.

If you plug in your headphones, it will use them automatically. If you want to change output src, use ioctl:

ioctl(/dev/mixer, SOUND_MIXER_WRITE_OUTSRC, HEADSET_OUT (mono) or LOUDERSPEAKER_OUT or EARPIECE_OUT or HEADJACK_OUT (stereo))

the constants are defined in ezx-common.h in the e680 kernel files

alebm posted an app that inspired me to find out those things...

Kosta

[tcTHEyounger]

Thanks for the information! and the pointers on which headers to look in. Has anyone been able to dial a phone using c++ or answer a call? I was noticing the telephony.h in the include directory.

Thanks

[kosta]

no, but I havent tried either.

You might be interested in this:
http://handhelds.org/moin/moin.cgi/Gomunicator

Also, I read somewhere that you can listen to the communication between the Application Processor (which runs linux) and the Baseband Processor (which makes phone calls). Unfortunately, I cannot find it atm

Kosta

[tcTHEyounger]

"Also, I read somewhere that you can listen to the communication between the Application Processor (which runs linux) and the Baseband Processor (which makes phone calls). Unfortunately, I cannot find it atm "


Looks like what you are talking about is ipclog see http://wiki.openezx.org/index.php/Software::AP::OpenEZX I think this has some promise