SpeedProvider.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.common.audio;
import androidx.media3.common.C;
import androidx.media3.common.util.UnstableApi;
/** A custom interface that determines the speed for media at specific timestamps. */
@UnstableApi
public interface SpeedProvider {
/**
* Returns the media speed from the provided timestamp.
*
* <p>The media speed will stay the same until {@linkplain #getNextSpeedChangeTimeUs the next
* specified speed change}.
*
* @param timeUs The timestamp of the media.
* @return The speed that the media should be played at.
*/
float getSpeed(long timeUs);
/**
* Returns the timestamp of the next speed change, if there is any.
*
* @param timeUs A timestamp, in microseconds.
* @return The timestamp of the next speed change, in microseconds, or {@link C#TIME_UNSET} if
* there is no next speed change. If {@code timeUs} corresponds to a speed change, the
* returned value corresponds to the following speed change.
*/
long getNextSpeedChangeTimeUs(long timeUs);
}