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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;
+
+/** Factory for creating VideoEncoders. */
+public interface VideoEncoderFactory {
+ public interface VideoEncoderSelector {
+ /** Called with the VideoCodecInfo of the currently used encoder. */
+ @CalledByNative("VideoEncoderSelector") void onCurrentEncoder(VideoCodecInfo info);
+
+ /**
+ * Called with the current available bitrate. Returns null if the encoder selector prefers to
+ * keep the current encoder or a VideoCodecInfo if a new encoder is preferred.
+ */
+ @Nullable @CalledByNative("VideoEncoderSelector") VideoCodecInfo onAvailableBitrate(int kbps);
+
+ /**
+ * Called every time the encoder input resolution change. Returns null if the encoder selector
+ * prefers to keep the current encoder or a VideoCodecInfo if a new encoder is preferred.
+ */
+ @Nullable
+ @CalledByNative("VideoEncoderSelector")
+ default VideoCodecInfo onResolutionChange(int widht, int height) {
+ return null;
+ }
+
+ /**
+ * Called when the currently used encoder signal itself as broken. Returns null if the encoder
+ * selector prefers to keep the current encoder or a VideoCodecInfo if a new encoder is
+ * preferred.
+ */
+ @Nullable @CalledByNative("VideoEncoderSelector") VideoCodecInfo onEncoderBroken();
+ }
+
+ /** Creates an encoder for the given video codec. */
+ @Nullable @CalledByNative VideoEncoder createEncoder(VideoCodecInfo info);
+
+ /**
+ * Enumerates the list of supported video codecs. This method will only be called once and the
+ * result will be cached.
+ */
+ @CalledByNative VideoCodecInfo[] getSupportedCodecs();
+
+ /**
+ * Enumerates the list of supported video codecs that can also be tagged with
+ * implementation information. This method will only be called once and the
+ * result will be cached.
+ */
+ @CalledByNative
+ default VideoCodecInfo[] getImplementations() {
+ return getSupportedCodecs();
+ }
+
+ /**
+ * Returns a VideoEncoderSelector if implemented by the VideoEncoderFactory,
+ * null otherwise.
+ */
+ @CalledByNative
+ default VideoEncoderSelector getEncoderSelector() {
+ return null;
+ }
+}