1 /* 2 * Copyright 2017 The WebRTC project authors. All Rights Reserved. 3 * 4 * Use of this source code is governed by a BSD-style license 5 * that can be found in the LICENSE file in the root of the source 6 * tree. An additional intellectual property rights grant can be found 7 * in the file PATENTS. All contributing project authors may 8 * be found in the AUTHORS file in the root of the source tree. 9 */ 10 11 package org.webrtc; 12 13 import androidx.annotation.Nullable; 14 import java.util.Arrays; 15 import java.util.LinkedHashSet; 16 17 /** 18 * Helper class that combines HW and SW decoders. 19 */ 20 public class DefaultVideoDecoderFactory implements VideoDecoderFactory { 21 private final VideoDecoderFactory hardwareVideoDecoderFactory; 22 private final VideoDecoderFactory softwareVideoDecoderFactory = new SoftwareVideoDecoderFactory(); 23 private final @Nullable VideoDecoderFactory platformSoftwareVideoDecoderFactory; 24 25 /** 26 * Create decoder factory using default hardware decoder factory. 27 */ DefaultVideoDecoderFactory(@ullable EglBase.Context eglContext)28 public DefaultVideoDecoderFactory(@Nullable EglBase.Context eglContext) { 29 this.hardwareVideoDecoderFactory = new HardwareVideoDecoderFactory(eglContext); 30 this.platformSoftwareVideoDecoderFactory = new PlatformSoftwareVideoDecoderFactory(eglContext); 31 } 32 33 /** 34 * Create decoder factory using explicit hardware decoder factory. 35 */ DefaultVideoDecoderFactory(VideoDecoderFactory hardwareVideoDecoderFactory)36 DefaultVideoDecoderFactory(VideoDecoderFactory hardwareVideoDecoderFactory) { 37 this.hardwareVideoDecoderFactory = hardwareVideoDecoderFactory; 38 this.platformSoftwareVideoDecoderFactory = null; 39 } 40 41 @Override createDecoder(VideoCodecInfo codecType)42 public @Nullable VideoDecoder createDecoder(VideoCodecInfo codecType) { 43 VideoDecoder softwareDecoder = softwareVideoDecoderFactory.createDecoder(codecType); 44 final VideoDecoder hardwareDecoder = hardwareVideoDecoderFactory.createDecoder(codecType); 45 if (softwareDecoder == null && platformSoftwareVideoDecoderFactory != null) { 46 softwareDecoder = platformSoftwareVideoDecoderFactory.createDecoder(codecType); 47 } 48 if (hardwareDecoder != null && softwareDecoder != null) { 49 // Both hardware and software supported, wrap it in a software fallback 50 return new VideoDecoderFallback( 51 /* fallback= */ softwareDecoder, /* primary= */ hardwareDecoder); 52 } 53 return hardwareDecoder != null ? hardwareDecoder : softwareDecoder; 54 } 55 56 @Override getSupportedCodecs()57 public VideoCodecInfo[] getSupportedCodecs() { 58 LinkedHashSet<VideoCodecInfo> supportedCodecInfos = new LinkedHashSet<VideoCodecInfo>(); 59 60 supportedCodecInfos.addAll(Arrays.asList(softwareVideoDecoderFactory.getSupportedCodecs())); 61 supportedCodecInfos.addAll(Arrays.asList(hardwareVideoDecoderFactory.getSupportedCodecs())); 62 if (platformSoftwareVideoDecoderFactory != null) { 63 supportedCodecInfos.addAll( 64 Arrays.asList(platformSoftwareVideoDecoderFactory.getSupportedCodecs())); 65 } 66 67 return supportedCodecInfos.toArray(new VideoCodecInfo[supportedCodecInfos.size()]); 68 } 69 } 70