1/*
2 * Copyright (c) 2023 Huawei Device Co., Ltd.
3 * Licensed under the Apache License, Version 2.0 (the "License");
4 * you may not use this file except in compliance with the License.
5 * You may obtain a copy of the License at
6 *
7 *     http://www.apache.org/licenses/LICENSE-2.0
8 *
9 * Unless required by applicable law or agreed to in writing, software
10 * distributed under the License is distributed on an "AS IS" BASIS,
11 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12 * See the License for the specific language governing permissions and
13 * limitations under the License.
14 */
15
16package ohos.hdi.display.composer.v1_1;
17
18import ohos.hdi.display.composer.v1_1.DisplayComposerType;
19
20[callback] interface IModeCallback {
21    /**
22     * @brief the callback to be invoked when display mode changes.
23     *
24     * @param modeId display mode id returned by {@link GetDisplaySupportedModes}
25     * @param vBlankPeriod the vblank period indicated by modeId
26     *
27     * @return Returns <b>0</b> if the operation is successful; returns an error code defined
28     * in {@link DispErrCode} otherwise.
29     * @since 4.1
30     * @version 1.1
31     */
32    OnMode([in] unsigned int modeId, [in] unsigned long vBlankPeriod);
33}