graphics/composer/2.4/IComposerClient.hal

/*
 * Copyright 2019 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 android.hardware.graphics.composer@2.4;

import @2.1::Display;
import @2.1::Error;
import @2.3::IComposerClient;

interface IComposerClient extends @2.3::IComposerClient {

    /**
     * Required capabilities which are supported by the display. The
     * particular set of supported capabilities for a given display may be
     * retrieved using getDisplayCapabilities.
     */
    enum DisplayCapability : uint32_t {
        /**
         * Indicates that the display supports protected contents.
         * When returned, hardware composer must be able to accept client target
         * with protected buffers.
         */
        PROTECTED_CONTENTS = 4,
    };

    /**
     * Provides a list of supported capabilities (as described in the
     * definition of DisplayCapability above). This list must not change after
     * initialization.
     *
     * @return error is NONE upon success. Otherwise,
     *     BAD_DISPLAY when an invalid display handle was passed in.
     * @return capabilities is a list of supported capabilities.
     */
    getDisplayCapabilities_2_4(Display display)
              generates (Error error,
                         vec<DisplayCapability> capabilities);
};