0012-halium11-libaudioclient-Fix-infinite-loop-in-get_audio_flinger.patch

From 07f97f013d5886bd2ba498797b495c3fefe07565 Mon Sep 17 00:00:00 2001
From: berbascum <berbascum@ticv.cat>
Date: Tue, 3 Mar 2026 19:23:15 +0100
Subject: [PATCH] (halium11) libaudioclient: Fix infinite loop in get_audio_flinger()

Problem:
In Halium environments, AudioFlinger is replaced by CameraRecordService
for audio recording.
However, get_audio_flinger() still attempts to contact AudioFlinger
using an infinite blocking loop:

    do {
        binder = sm->getService(String16("media.audio_flinger"));
        if (binder != 0)
            break;
        ALOGW("AudioFlinger not published, waiting...");
        usleep(500000);
    } while (true);

When AudioFlinger is not started, getService() never succeeds,
and the function remains trapped in the infinite while(true=) loop,
blocking the audio thread indefinitely.

Impact:
Camera video recording with audio in hardware mode might fail
on halium-11 for some devices.

Solution:
Check for CameraRecordService. If running, skip audioflinger wait loop.

- Tested on Xiaomi POCO X3 Pro (vayu) running Droidian-101/Halium-11.
- Camera app: new droidian-camera from 102 (qt6 hybris-compat)
  https://github.com/droidian/droidian-camera/tree/feature/next/hybris-compat
- Camera video recording with audio in hw mode now works.

Signed-off-by: berbascum <berbascum@ticv.cat>
---
 media/libaudioclient/AudioSystem.cpp | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/media/libaudioclient/AudioSystem.cpp b/media/libaudioclient/AudioSystem.cpp
index d84c49e22a..74a68fec46 100644
--- a/media/libaudioclient/AudioSystem.cpp
+++ b/media/libaudioclient/AudioSystem.cpp
@@ -66,6 +66,11 @@ const sp<IAudioFlinger> AudioSystem::get_audio_flinger()
         if (gAudioFlinger == 0) {
             sp<IServiceManager> sm = defaultServiceManager();
             sp<IBinder> binder;
+	    // Check if running in CameraRecordService mode (Halium)
+            if (sm->checkService(String16(CameraRecordService::exported_service_name())) != 0) {
+                ALOGW("CameraRecordService mode: Skipping AudioFlinger");
+                return NULL;
+            }
             do {
                 binder = sm->getService(String16("media.audio_flinger"));
                 if (binder != 0)
---
2.50.0