1 files changed, 69 insertions, 0 deletions
diff --git a/third_party/libwebrtc/sdk/android/api/org/webrtc/DefaultVideoDecoderFactory.java b/third_party/libwebrtc/sdk/android/api/org/webrtc/DefaultVideoDecoderFactory.java
new file mode 100644
index 0000000000..d7a8694d3d
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+++ b/third_party/libwebrtc/sdk/android/api/org/webrtc/DefaultVideoDecoderFactory.java
@@ -0,0 +1,69 @@
+/*
+ *  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()]);
+  }
+}