SpeedChangeShaderProgram.java
/*
* Copyright 2023 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
*
* https://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.effect;
import android.content.Context;
import androidx.media3.common.GlObjectsProvider;
import androidx.media3.common.GlTextureInfo;
import androidx.media3.common.VideoFrameProcessingException;
import androidx.media3.common.util.UnstableApi;
/** Applies a speed change by updating the frame timestamps. */
@UnstableApi
/* package */ final class SpeedChangeShaderProgram extends FrameCacheGlShaderProgram {
private final float speed;
public SpeedChangeShaderProgram(Context context, float speed, boolean useHdr)
throws VideoFrameProcessingException {
super(context, /* capacity= */ 1, useHdr);
this.speed = speed;
}
@Override
public void queueInputFrame(
GlObjectsProvider glObjectsProvider, GlTextureInfo inputTexture, long presentationTimeUs) {
super.queueInputFrame(glObjectsProvider, inputTexture, (long) (presentationTimeUs / speed));
}
}