| /* |
| * Copyright 2020 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| package androidx.camera.camera2.pipe.testing |
| |
| import androidx.camera.camera2.pipe.GraphState |
| import androidx.camera.camera2.pipe.GraphState.GraphStateError |
| import androidx.camera.camera2.pipe.GraphState.GraphStateStarted |
| import androidx.camera.camera2.pipe.GraphState.GraphStateStarting |
| import androidx.camera.camera2.pipe.GraphState.GraphStateStopped |
| import androidx.camera.camera2.pipe.GraphState.GraphStateStopping |
| import androidx.camera.camera2.pipe.Request |
| import androidx.camera.camera2.pipe.graph.GraphListener |
| import androidx.camera.camera2.pipe.graph.GraphProcessor |
| import androidx.camera.camera2.pipe.graph.GraphRequestProcessor |
| import androidx.camera.camera2.pipe.graph.GraphState3A |
| import androidx.camera.camera2.pipe.putAllMetadata |
| import kotlinx.coroutines.flow.MutableStateFlow |
| import kotlinx.coroutines.flow.StateFlow |
| import kotlinx.coroutines.flow.update |
| |
| /** Fake implementation of a [GraphProcessor] for tests. */ |
| internal class FakeGraphProcessor( |
| val graphState3A: GraphState3A = GraphState3A(), |
| val defaultParameters: Map<*, Any?> = emptyMap<Any, Any?>(), |
| val defaultListeners: List<Request.Listener> = emptyList() |
| ) : GraphProcessor, GraphListener { |
| var active = true |
| private set |
| var closed = false |
| private set |
| var repeatingRequest: Request? = null |
| private set |
| val requestQueue: List<List<Request>> |
| get() = _requestQueue |
| |
| private val _requestQueue = mutableListOf<List<Request>>() |
| private var processor: GraphRequestProcessor? = null |
| |
| private val _graphState = MutableStateFlow<GraphState>(GraphStateStopped) |
| |
| override val graphState: StateFlow<GraphState> |
| get() = _graphState |
| |
| override fun startRepeating(request: Request) { |
| repeatingRequest = request |
| } |
| |
| override fun stopRepeating() { |
| repeatingRequest = null |
| } |
| |
| override fun submit(request: Request) { |
| submit(listOf(request)) |
| } |
| |
| override fun submit(requests: List<Request>) { |
| _requestQueue.add(requests) |
| } |
| |
| override suspend fun trySubmit(parameters: Map<*, Any?>): Boolean { |
| if (closed) { |
| return false |
| } |
| val currProcessor = processor |
| val currRepeatingRequest = repeatingRequest |
| val requiredParameters = mutableMapOf<Any, Any?>() |
| requiredParameters.putAllMetadata(parameters) |
| graphState3A.writeTo(requiredParameters) |
| |
| return when { |
| currProcessor == null || currRepeatingRequest == null -> false |
| else -> |
| currProcessor.submit( |
| isRepeating = false, |
| requests = listOf(currRepeatingRequest), |
| defaultParameters = defaultParameters, |
| requiredParameters = requiredParameters, |
| listeners = defaultListeners |
| ) |
| } |
| } |
| |
| override fun abort() { |
| _requestQueue.clear() |
| // TODO: Invoke abort on the listeners in the queue. |
| } |
| |
| override fun close() { |
| if (closed) { |
| return |
| } |
| closed = true |
| active = false |
| _requestQueue.clear() |
| } |
| |
| override fun onGraphStarting() { |
| _graphState.value = GraphStateStarting |
| } |
| |
| override fun onGraphStarted(requestProcessor: GraphRequestProcessor) { |
| _graphState.value = GraphStateStarted |
| val old = processor |
| processor = requestProcessor |
| old?.close() |
| } |
| |
| override fun onGraphStopping() { |
| _graphState.value = GraphStateStopping |
| } |
| |
| override fun onGraphStopped(requestProcessor: GraphRequestProcessor) { |
| _graphState.value = GraphStateStopped |
| val old = processor |
| if (requestProcessor === old) { |
| processor = null |
| old.close() |
| } |
| } |
| |
| override fun onGraphModified(requestProcessor: GraphRequestProcessor) { |
| invalidate() |
| } |
| |
| override fun onGraphError(graphStateError: GraphStateError) { |
| _graphState.update { graphState -> |
| if (graphState is GraphStateStopping || graphState is GraphStateStopped) { |
| GraphStateStopped |
| } else { |
| graphStateError |
| } |
| } |
| } |
| |
| override fun invalidate() { |
| if (closed) { |
| return |
| } |
| |
| val currProcessor = processor |
| val currRepeatingRequest = repeatingRequest |
| val requiredParameters = graphState3A.readState() |
| |
| if (currProcessor == null || currRepeatingRequest == null) { |
| return |
| } |
| |
| currProcessor.submit( |
| isRepeating = true, |
| requests = listOf(currRepeatingRequest), |
| defaultParameters = defaultParameters, |
| requiredParameters = requiredParameters, |
| listeners = defaultListeners |
| ) |
| } |
| } |
