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mob_audio_capture

0.1.0
0.1.0

Global device-audio capture (Android MediaProjection/AudioPlaybackCapture) for Mob apps — a test-environment probe that meters audio other apps/native players produce, which the in-app Mob.Audio probes cannot reach

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mob_audio_capture src mob_audio_capture_nif.erl
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src/mob_audio_capture_nif.erl 

%% mob_audio_capture_nif — Erlang NIF module for the device-audio-capture plugin.

%%

%% Android: priv/native/jni/mob_audio_capture_nif.zig bridges to the Kotlin

%% io.mob.audiocapture.MobAudioCaptureBridge (MediaProjection consent →

%% AudioPlaybackCaptureConfiguration → AudioRecord; the capture thread computes RMS/peak

%% and start/stop lifecycle + permission outcome are delivered back to the BEAM).

%% iOS: priv/native/ios/mob_audio_capture_nif.m — there is no public inter-app/system

%% output capture API, so every NIF returns :unsupported_on_platform.

%%

%% Both register this module via the plugin nif_init entry point and are statically

%% linked into the host binary on device. On a host dev build neither is linked, so

%% on_load tolerates the failure and the NIFs fall back to nif_error until the native

%% merge links one.

-module(mob_audio_capture_nif).

-export([

    audio_capture_start/1,

    audio_capture_stop/0,

    audio_capture_level/0

]).

-on_load(init/0).



init() ->

    case erlang:load_nif("mob_audio_capture_nif", 0) of

        ok -> ok;

        {error, _} -> ok

    end.



audio_capture_start(_ConfigJson) ->

    erlang:nif_error(nif_not_loaded).



audio_capture_stop() ->

    erlang:nif_error(nif_not_loaded).



audio_capture_level() ->

    erlang:nif_error(nif_not_loaded).