Resolve device selector on detach and add YuvStimProducer state tests.

Detach finds the shared producer via lcameraDev_resolveDeviceSelectorCReq
then removes buffers by attach identity; unit tests cover quale guards.

Co-authored-by: Cursor <cursoragent@cursor.com>

stimBuffApis/lcameraBuff/lcameraBuff.cpp

@@ -28,6 +28,7 @@ LcameraDevDllState::LcameraDevDllState()
 	lcameraDev_main(nullptr),
 	lcameraDev_exit(nullptr),
 	lcameraDev_getOrCreateDeviceCReq(nullptr),
+	lcameraDev_resolveDeviceSelectorCReq(nullptr),
 	lcameraDev_releaseDeviceCReq(nullptr),
 	lcameraDev_configureSessionModeCReq(nullptr)
 {}
@@ -47,23 +48,6 @@ std::shared_ptr<YuvStimProducer> findStimProducerByCameraId(
 	return nullptr;
 }
 
-std::shared_ptr<YuvStimProducer> findStimProducerWithAttachedBuffer(
-	const std::shared_ptr<device::DeviceAttachmentSpec>& desc)
-{
-	for (const std::shared_ptr<YuvStimProducer>& producer :
-		attachedStimulusProducers)
-	{
-		assert(producer != nullptr);
-		if (producer->getAttachedStimulusBufferByAttachIdentity(
-				desc->deviceIdentifier, desc->qualeIfaceApi))
-		{
-			return producer;
-		}
-	}
-
-	return nullptr;
-}
-
 bool validateAttachRequest(
 	const std::shared_ptr<device::DeviceAttachmentSpec>& spec)
 {
@@ -110,6 +94,11 @@ void loadLcameraDevSymbols()
 			dlsym(
 				lcameraDevDll.dlopenHandle.get(),
 				"lcameraDev_getOrCreateDeviceCReq"));
+	lcameraDevDll.lcameraDev_resolveDeviceSelectorCReq = reinterpret_cast<
+		lcameraDev_resolveDeviceSelectorCReqFn *>(
+			dlsym(
+				lcameraDevDll.dlopenHandle.get(),
+				"lcameraDev_resolveDeviceSelectorCReq"));
 	lcameraDevDll.lcameraDev_releaseDeviceCReq = reinterpret_cast<
 		lcameraDev_releaseDeviceCReqFn *>(
 			dlsym(
@@ -124,6 +113,7 @@ void loadLcameraDevSymbols()
 	if (!lcameraDevDll.lcameraDev_main
 		|| !lcameraDevDll.lcameraDev_exit
 		|| !lcameraDevDll.lcameraDev_getOrCreateDeviceCReq
+		|| !lcameraDevDll.lcameraDev_resolveDeviceSelectorCReq
 		|| !lcameraDevDll.lcameraDev_releaseDeviceCReq
 		|| !lcameraDevDll.lcameraDev_configureSessionModeCReq)
 	{
@@ -276,7 +266,11 @@ lcameraBuff_detachDeviceCReq(
 		co_return StimBuffDeviceOpResult{false, desc};
 	}
 
-	auto producer = findStimProducerWithAttachedBuffer(desc);
+	const lcamera_dev::CameraIdentityRecord resolvedIdentity =
+		co_await (*lcameraDevDll.lcameraDev_resolveDeviceSelectorCReq)(
+			desc->deviceSelector);
+
+	auto producer = findStimProducerByCameraId(resolvedIdentity.id);
 	if (!producer) {
 		co_return StimBuffDeviceOpResult{true, desc};
 	}