platform_hardware_interfaces/media/omx/1.0/IOmx.hal

/*
 * Copyright (C) 2016 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.media.omx@1.0;

import android.hardware.graphics.bufferqueue@1.0::IGraphicBufferProducer;
import android.hardware.media@1.0::types;

import IOmxNode;
import IOmxObserver;
import IGraphicBufferSource;

/**
 * Ref: frameworks/av/include/media/IOMX.h: IOMX
 *
 * IOmx is the main entry point for communicating with OMX components.
 */
interface IOmx {

    /**
     * Information for an IOmxNode component.
     */
    struct ComponentInfo {
        string mName;
        vec<string> mRoles;
    };

    /**
     * List available components.
     *
     * @param[out] status The status of the call.
     * @param[out] nodeList The list of ComponentInfo.
     */
    listNodes(
        ) generates (
            Status status,
            vec<ComponentInfo> nodeList
        );

    /**
     * Allocate an IOmxNode instance with the specified component name.
     *
     * @param[in] name The name of the component to create.
     * @param[in] observer An observer object that will receive messages from
     * the created instance.
     * @param[out] status The status of the call.
     * @param[out] omxNode The allocated instance of IOmxNode.
     */
    allocateNode(
            string name,
            IOmxObserver observer
        ) generates (
            Status status,
            IOmxNode omxNode
        );

    /**
     * Create an input surface for recording.
     *
     * @param[out] producer The associated producer end of the buffer queue.
     * @param[out] source The associated `IGraphicBufferSource`.
     */
    createInputSurface(
        ) generates (
            Status status,
            IGraphicBufferProducer producer,
            IGraphicBufferSource source
        );
};