Linphone Rebrand & Audio Integration

I need a seasoned Android engineer to fork the open-source Linphone project, apply my brand, and extend its audio capabilities. The visual refresh will cover the usual touch-points—logo, colours, name, icon and splash—so the finished APK feels fully ours rather than a generic Linphone build. The bigger change lies under the hood: during an active SIP call the user must be able to stream audio from different sources, with the microphone taking precedence. A bespoke in-call panel should let the user tap once to keep the mic live, or switch to an audio file or even the device’s system sound in future iterations. Please design this selector from scratch so it blends with the new look instead of relying on Linphone’s stock UI elements. Key deliverables • Branded Linphone Android source + signed release APK • Custom audio-input selector UI wired to Linphone’s core (mic working, hooks ready for file/system sound) • Clear build & deployment instructions for Android Studio Acceptance I will install the APK, place a SIP call, toggle to each available input and verify that the far side receives the chosen stream without glitches. Once that passes and the visual assets match the brand guide, the milestone is complete.