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Audio stream
Added by Alex Ivanov over 11 years ago
Hello!
I'am interesting in the possibility to modify an audio stream during the call (any phone model is acceptable).
I can't figure out is it possible to do in Android with proprietary drivers which working with GSM-module (without reverse engineering of particular protocols). Can your project be helpful in this task?
Replies (5)
RE: Audio stream - Added by Paul Kocialkowski over 11 years ago
In most phones (and all of the ones we support), the audio stream is routed from the CODEC (which is the chip that deals with the microphone and the audio outputs) to the modem directly by hardware, not through the CPU. It means that you won't be able to modify the audio stream by software.
RE: Audio stream - Added by Alex Ivanov over 11 years ago
Thanks for reply!
But what about making data-calls (i want to send data through CSD-channel)? Does libsamsung-ipc have appropriate interface to transmit data during data-call?
RE: Audio stream - Added by Paul Kocialkowski over 11 years ago
If you mean direct data connection between 2 phones using the GSM network, I don't think this is implemented at all in Android (and not in libsamsung-ipc anyway). The only type of data that works is mobile data such as 3G/GPRS/EDGE/whatever.
RE: Audio stream - Added by Alex Ivanov over 11 years ago
As i know, atd0**** can make data call throuh CSD-channel (old analog of GPRS with TDMA). And we can send AT-commands to mobile GSM-modem using adb shell.
So, i suggest we can use ril to send AT-commands from phone. Am i right?
RE: Audio stream - Added by Paul Kocialkowski over 11 years ago
Samsung phones don't use AT, so this won't work, sorry.