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/*
* 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 androidx.annotation.Nullable;
import java.util.Arrays;
import java.util.LinkedHashSet;
/**
* Helper class that combines HW and SW decoders.
*/
public class DefaultVideoDecoderFactory implements VideoDecoderFactory {
private final VideoDecoderFactory hardwareVideoDecoderFactory;
private final VideoDecoderFactory softwareVideoDecoderFactory = new SoftwareVideoDecoderFactory();
private final @Nullable VideoDecoderFactory platformSoftwareVideoDecoderFactory;
/**
* Create decoder factory using default hardware decoder factory.
*/
public DefaultVideoDecoderFactory(@Nullable EglBase.Context eglContext) {
this.hardwareVideoDecoderFactory = new HardwareVideoDecoderFactory(eglContext);
this.platformSoftwareVideoDecoderFactory = new PlatformSoftwareVideoDecoderFactory(eglContext);
}
/**
* Create decoder factory using explicit hardware decoder factory.
*/
DefaultVideoDecoderFactory(VideoDecoderFactory hardwareVideoDecoderFactory) {
this.hardwareVideoDecoderFactory = hardwareVideoDecoderFactory;
this.platformSoftwareVideoDecoderFactory = null;
}
@Override
public @Nullable VideoDecoder createDecoder(VideoCodecInfo codecType) {
VideoDecoder softwareDecoder = softwareVideoDecoderFactory.createDecoder(codecType);
final VideoDecoder hardwareDecoder = hardwareVideoDecoderFactory.createDecoder(codecType);
if (softwareDecoder == null && platformSoftwareVideoDecoderFactory != null) {
softwareDecoder = platformSoftwareVideoDecoderFactory.createDecoder(codecType);
}
if (hardwareDecoder != null && softwareDecoder != null) {
// Both hardware and software supported, wrap it in a software fallback
return new VideoDecoderFallback(
/* fallback= */ softwareDecoder, /* primary= */ hardwareDecoder);
}
return hardwareDecoder != null ? hardwareDecoder : softwareDecoder;
}
@Override
public VideoCodecInfo[] getSupportedCodecs() {
LinkedHashSet<VideoCodecInfo> supportedCodecInfos = new LinkedHashSet<VideoCodecInfo>();
supportedCodecInfos.addAll(Arrays.asList(softwareVideoDecoderFactory.getSupportedCodecs()));
supportedCodecInfos.addAll(Arrays.asList(hardwareVideoDecoderFactory.getSupportedCodecs()));
if (platformSoftwareVideoDecoderFactory != null) {
supportedCodecInfos.addAll(
Arrays.asList(platformSoftwareVideoDecoderFactory.getSupportedCodecs()));
}
return supportedCodecInfos.toArray(new VideoCodecInfo[supportedCodecInfos.size()]);
}
}
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