AudioSystem: new audioflinger restart detection
Add a specific method to AudioSystem for AudioService to poll
for AudioFlinger service restart instead of relying on current
callback mechanism which is flaky.
Bug: 9693068.
Change-Id: Ie88bc9d25033503bc5cd2fa9d8c754d0f8045b8f
diff --git a/include/media/AudioSystem.h b/include/media/AudioSystem.h
index 006af08..225ef76 100644
--- a/include/media/AudioSystem.h
+++ b/include/media/AudioSystem.h
@@ -252,6 +252,9 @@
// bit rate, duration, video and streaming or offload property is enabled
static bool isOffloadSupported(const audio_offload_info_t& info);
+ // check presence of audio flinger service.
+ // returns NO_ERROR if binding to service succeeds, DEAD_OBJECT otherwise
+ static status_t checkAudioFlinger();
// ----------------------------------------------------------------------------
private:
diff --git a/media/libmedia/AudioSystem.cpp b/media/libmedia/AudioSystem.cpp
index a571fe4..8033c2c 100644
--- a/media/libmedia/AudioSystem.cpp
+++ b/media/libmedia/AudioSystem.cpp
@@ -76,6 +76,14 @@
return gAudioFlinger;
}
+/* static */ status_t AudioSystem::checkAudioFlinger()
+{
+ if (defaultServiceManager()->checkService(String16("media.audio_flinger")) != 0) {
+ return NO_ERROR;
+ }
+ return DEAD_OBJECT;
+}
+
status_t AudioSystem::muteMicrophone(bool state) {
const sp<IAudioFlinger>& af = AudioSystem::get_audio_flinger();
if (af == 0) return PERMISSION_DENIED;
