267040e29a
Is useful for app that has parts in java and parts in native, that can pass down native pointer rather than java object, and get the native pointer using up-call. Many/most other objects expose their native pointer for these use cases. BUG=None Change-Id: I352d4de388525abb09733d38b6af6651770d0498 Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/307460 Reviewed-by: Xavier Lepaul <xalep@webrtc.org> Commit-Queue: Jonas Oreland <jonaso@webrtc.org> Cr-Commit-Position: refs/heads/main@{#40203}
77 lines
2.5 KiB
Java
77 lines
2.5 KiB
Java
/*
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* Copyright 2013 The WebRTC project authors. All Rights Reserved.
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*
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* Use of this source code is governed by a BSD-style license
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* that can be found in the LICENSE file in the root of the source
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* tree. An additional intellectual property rights grant can be found
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* in the file PATENTS. All contributing project authors may
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* be found in the AUTHORS file in the root of the source tree.
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*/
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package org.webrtc;
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import java.util.IdentityHashMap;
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/** Java version of VideoTrackInterface. */
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public class VideoTrack extends MediaStreamTrack {
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private final IdentityHashMap<VideoSink, Long> sinks = new IdentityHashMap<VideoSink, Long>();
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public VideoTrack(long nativeTrack) {
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super(nativeTrack);
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}
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/**
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* Adds a VideoSink to the track.
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*
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* A track can have any number of VideoSinks. VideoSinks will replace
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* renderers. However, converting old style texture frames will involve costly
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* conversion to I420 so it is not recommended to upgrade before all your
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* sources produce VideoFrames.
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*/
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public void addSink(VideoSink sink) {
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if (sink == null) {
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throw new IllegalArgumentException("The VideoSink is not allowed to be null");
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}
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// We allow calling addSink() with the same sink multiple times. This is similar to the C++
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// VideoTrack::AddOrUpdateSink().
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if (!sinks.containsKey(sink)) {
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final long nativeSink = nativeWrapSink(sink);
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sinks.put(sink, nativeSink);
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nativeAddSink(getNativeMediaStreamTrack(), nativeSink);
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}
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}
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/**
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* Removes a VideoSink from the track.
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*
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* If the VideoSink was not attached to the track, this is a no-op.
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*/
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public void removeSink(VideoSink sink) {
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final Long nativeSink = sinks.remove(sink);
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if (nativeSink != null) {
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nativeRemoveSink(getNativeMediaStreamTrack(), nativeSink);
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nativeFreeSink(nativeSink);
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}
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}
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@Override
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public void dispose() {
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for (long nativeSink : sinks.values()) {
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nativeRemoveSink(getNativeMediaStreamTrack(), nativeSink);
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nativeFreeSink(nativeSink);
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}
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sinks.clear();
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super.dispose();
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}
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/** Returns a pointer to webrtc::VideoTrackInterface. */
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public long getNativeVideoTrack() {
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return getNativeMediaStreamTrack();
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}
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private static native void nativeAddSink(long track, long nativeSink);
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private static native void nativeRemoveSink(long track, long nativeSink);
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private static native long nativeWrapSink(VideoSink sink);
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private static native void nativeFreeSink(long sink);
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}
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