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fix(audio): defer MODE_IN_COMMUNICATION to call start, restore on end

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Root cause: MainActivity set MODE_IN_COMMUNICATION at app launch,
hijacking system audio routing immediately — BT A2DP music dropped to
earpiece, and the pre-existing communication mode confused subsequent
setCommunicationDevice calls for BT SCO.

Fix: MainActivity now only sets volumes. MODE_IN_COMMUNICATION is set
via JNI right before Oboe audio_start() in CallEngine, and MODE_NORMAL
is restored after audio_stop() when the call ends.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
This commit is contained in:
Siavash Sameni
2026-04-12 17:29:59 +04:00
parent a37c8b30fe
commit 15c237ceea
3 changed files with 55 additions and 11 deletions
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16
desktop/src-tauri/src/engine.rs
View File

@@ -436,6 +436,16 @@ impl CallEngine {
// hitting a "device busy" on some HALs.
tokio::time::sleep(std::time::Duration::from_millis(50)).await;
// Set MODE_IN_COMMUNICATION right before audio starts — NOT at
// app launch. Setting it early hijacks system audio routing
// (music drops from BT A2DP to earpiece, etc.).
#[cfg(target_os = "android")]
{
if let Err(e) = crate::android_audio::set_audio_mode_communication() {
warn!("set_audio_mode_communication failed: {e}");
}
}
let t_pre_audio = call_t0.elapsed().as_millis();
if let Err(code) = crate::wzp_native::audio_start() {
return Err(anyhow::anyhow!("wzp_native_audio_start failed: code {code}"));
@@ -1490,6 +1500,12 @@ impl CallEngine {
#[cfg(target_os = "android")]
{
crate::wzp_native::audio_stop();
// Restore MODE_NORMAL so other apps' audio (music, etc.)
// routes normally again. Without this, the system stays in
// communication mode and BT A2DP music goes to earpiece.
if let Err(e) = crate::android_audio::set_audio_mode_normal() {
tracing::warn!("set_audio_mode_normal failed: {e}");
}
}
}
}