RtpDataChannel.java
/*
* Copyright 2021 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package androidx.media3.exoplayer.rtsp;
import androidx.annotation.Nullable;
import androidx.media3.common.C;
import androidx.media3.common.util.UnstableApi;
import androidx.media3.datasource.DataSource;
import androidx.media3.exoplayer.rtsp.RtspMessageChannel.InterleavedBinaryDataListener;
import java.io.IOException;
/** An RTP {@link DataSource}. */
@UnstableApi
/* package */ interface RtpDataChannel extends DataSource {
/** Creates {@link RtpDataChannel} for RTSP streams. */
interface Factory {
/**
* Creates a new {@link RtpDataChannel} instance for RTP data transfer.
*
* @param trackId The track ID.
* @throws IOException If the data channels failed to open.
*/
RtpDataChannel createAndOpenDataChannel(int trackId) throws IOException;
/** Returns a fallback {@code Factory}, {@code null} when there is no fallback available. */
@Nullable
default Factory createFallbackDataChannelFactory() {
return null;
}
}
/** Returns the RTSP transport header for this {@link RtpDataChannel} */
String getTransport();
/**
* Returns the receiving port or channel used by the underlying transport protocol, {@link
* C#INDEX_UNSET} if the data channel is not opened.
*/
int getLocalPort();
/**
* Returns a {@link InterleavedBinaryDataListener} if the implementation supports receiving RTP
* packets on a side-band protocol, for example RTP-over-RTSP; otherwise {@code null}.
*/
@Nullable
InterleavedBinaryDataListener getInterleavedBinaryDataListener();
}