src/camera/bin/virtual_camera/virtual_camera.test.fidl

// Copyright 2021 The Fuchsia Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
deprecated_syntax;

library fuchsia.camera.test.virtualcamera;

// Set of possible errors for methods on the |VirtualCameraDevice| protocol.
enum Error {
    // Occurs when |AddToDeviceWatcher| is called and the device has already been added.
    ALREADY_ADDED_TO_DEVICE_WATCHER = 1;
};

// Parameters that can be set for a stream created with |AddStreamConfig|.
table StreamConfig {
    1: uint32 width;
    2: uint32 height;
};

/// This interface provides a way for test clients to set up fake streams
/// using the 'virtual' camera.
[Discoverable]
protocol VirtualCameraDevice {
    // Makes the virtual camera available to the |DeviceWatcher| agent.
    // This allows the fake streams to be picked up by other components
    // in the system. Must be called before proceeding with tests otherwise
    // the virtual camera won't be available to camera clients.
    AddToDeviceWatcher() -> () error Error;

    // Adds a |StreamConfig| at the given |index|. |index| is used to refer
    // to the config in future operations. If this is called multiple times
    // with the same |index|, the older value will be overwritten.
    AddStreamConfig(uint64 index, StreamConfig config);
};