Merge "prevent preempting overlapping sound trigger audio streams" into oc-dr1-dev (81ccb8fe) · Commits · e / os / android_frameworks_av

services/audiopolicy/managerdefault/AudioPolicyManager.cpp

+46 −1

Original line number	Diff line number	Diff line
		@@ -1815,6 +1815,40 @@ bool AudioPolicyManager::isConcurentCaptureAllowed(const sp<AudioInputDescriptor
		return true;
		}

		// FIXME: remove when concurrent capture is ready. This is a hack to work around bug b/63083537.
		bool AudioPolicyManager::soundTriggerSupportsConcurrentCapture() {
		if (!mHasComputedSoundTriggerSupportsConcurrentCapture) {
		bool soundTriggerSupportsConcurrentCapture = false;
		unsigned int numModules = 0;
		struct sound_trigger_module_descriptor* nModules = NULL;

		status_t status = SoundTrigger::listModules(nModules, &numModules);
		if (status == NO_ERROR && numModules != 0) {
		nModules = (struct sound_trigger_module_descriptor*) calloc(
		numModules, sizeof(struct sound_trigger_module_descriptor));
		if (nModules == NULL) {
		// We failed to malloc the buffer, so just say no for now, and hope that we have more
		// ram the next time this function is called.
		ALOGE("Failed to allocate buffer for module descriptors");
		return false;
		}

		status = SoundTrigger::listModules(nModules, &numModules);
		if (status == NO_ERROR) {
		soundTriggerSupportsConcurrentCapture = true;
		for (size_t i = 0; i < numModules; ++i) {
		soundTriggerSupportsConcurrentCapture &=
		nModules[i].properties.concurrent_capture;
		}
		}
		free(nModules);
		}
		mSoundTriggerSupportsConcurrentCapture = soundTriggerSupportsConcurrentCapture;
		mHasComputedSoundTriggerSupportsConcurrentCapture = true;
		}
		return mSoundTriggerSupportsConcurrentCapture;
		}


		status_t AudioPolicyManager::startInput(audio_io_handle_t input,
		audio_session_t session,
		@@ -1887,6 +1921,12 @@ status_t AudioPolicyManager::startInput(audio_io_handle_t input,
		}
		}

		// We only need to check if the sound trigger session supports concurrent capture if the
		// input is also a sound trigger input. Otherwise, we should preempt any hotword stream
		// that's running.
		const bool allowConcurrentWithSoundTrigger =
		inputDesc->isSoundTrigger() ? soundTriggerSupportsConcurrentCapture() : false;

		// if capture is allowed, preempt currently active HOTWORD captures
		for (size_t i = 0; i < activeInputs.size(); i++) {
		sp<AudioInputDescriptor> activeDesc = activeInputs[i];
		@@ -1895,6 +1935,10 @@ status_t AudioPolicyManager::startInput(audio_io_handle_t input,
		continue;
		}

		if (allowConcurrentWithSoundTrigger && activeDesc->isSoundTrigger()) {
		continue;
		}

		audio_source_t activeSource = activeDesc->inputSource(true);
		if (activeSource == AUDIO_SOURCE_HOTWORD) {
		AudioSessionCollection activeSessions =
		@@ -3491,7 +3535,8 @@ AudioPolicyManager::AudioPolicyManager(AudioPolicyClientInterface *clientInterfa
		mBeaconMuted(false),
		mTtsOutputAvailable(false),
		mMasterMono(false),
		mMusicEffectOutput(AUDIO_IO_HANDLE_NONE)
		mMusicEffectOutput(AUDIO_IO_HANDLE_NONE),
		mHasComputedSoundTriggerSupportsConcurrentCapture(false)
		{
		mUidCached = getuid();
		mpClientInterface = clientInterface;

services/audiopolicy/managerdefault/AudioPolicyManager.h

+4 −0

Original line number	Diff line number	Diff line
		@@ -671,6 +671,10 @@ private:
		param.addInt(String8(AudioParameter::keyMonoOutput), (int)mMasterMono);
		mpClientInterface->setParameters(output, param.toString());
		}

		bool soundTriggerSupportsConcurrentCapture();
		bool mSoundTriggerSupportsConcurrentCapture;
		bool mHasComputedSoundTriggerSupportsConcurrentCapture;
		};

		};