camera/camera-camera2-pipe/src/main/java/androidx/camera/camera2/pipe/StreamGraph.kt

/*
 * 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

import androidx.annotation.RequiresApi
import androidx.annotation.RestrictTo

/**
 * This defines a fixed set of inputs and outputs for a single [CameraGraph] instance.
 *
 * [CameraStream]s can be used to build [Request]s that are sent to a [CameraGraph].
 */
@RestrictTo(RestrictTo.Scope.LIBRARY_GROUP)
@RequiresApi(21) // TODO(b/200306659): Remove and replace with annotation on package-info.java
interface StreamGraph {
    val streams: List<CameraStream>
    val streamIds: Set<StreamId>
    val inputs: List<InputStream>
    val outputs: List<OutputStream>

    operator fun get(config: CameraStream.Config): CameraStream?
}