/*
 *  Copyright 2017 The WebRTC project authors. All Rights Reserved.
 *
 *  Use of this source code is governed by a BSD-style license
 *  that can be found in the LICENSE file in the root of the source
 *  tree. An additional intellectual property rights grant can be found
 *  in the file PATENTS.  All contributing project authors may
 *  be found in the AUTHORS file in the root of the source tree.
 */

package org.webrtc;


import android.util.Log;

import java.util.Arrays;
import java.util.LinkedHashSet;

/**
 * Helper class that combines HW and SW encoders.
 */
public class DefaultVideoEncoderFactory implements VideoEncoderFactory {
    private final VideoEncoderFactory hardwareVideoEncoderFactory;
    private final VideoEncoderFactory softwareVideoEncoderFactory = new SoftwareVideoEncoderFactory();

    /**
     * Create encoder factory using default hardware encoder factory.
     */
    public DefaultVideoEncoderFactory(
            EglBase.Context eglContext, boolean enableIntelVp8Encoder, boolean enableH264HighProfile) {
        this.hardwareVideoEncoderFactory = new HardwareVideoEncoderFactory(eglContext, enableIntelVp8Encoder, enableH264HighProfile);
    }

    /**
     * Create encoder factory using explicit hardware encoder factory.
     */
    DefaultVideoEncoderFactory(VideoEncoderFactory hardwareVideoEncoderFactory) {
        this.hardwareVideoEncoderFactory = hardwareVideoEncoderFactory;
    }


    @Override
    public VideoEncoder createEncoder(VideoCodecInfo info) {
        final VideoEncoder softwareEncoder = softwareVideoEncoderFactory.createEncoder(info);
        final VideoEncoder hardwareEncoder = hardwareVideoEncoderFactory.createEncoder(info);


        if (hardwareEncoder != null && softwareEncoder != null) {

            // Both hardware and software supported, wrap it in a software fallback
            return new VideoEncoderFallback(
                    /* fallback= */softwareEncoder, /* primary= */ hardwareEncoder);
        }
        return hardwareEncoder != null ? hardwareEncoder : softwareEncoder;
    }

    @Override
    public VideoCodecInfo[] getSupportedCodecs() {
        LinkedHashSet<VideoCodecInfo> supportedCodecInfos = new LinkedHashSet<>();

        supportedCodecInfos.addAll(Arrays.asList(softwareVideoEncoderFactory.getSupportedCodecs()));
        supportedCodecInfos.addAll(Arrays.asList(hardwareVideoEncoderFactory.getSupportedCodecs()));

        return supportedCodecInfos.toArray(new VideoCodecInfo[supportedCodecInfos.size()]);
    }
}
