FakeVideoRenderer.java
/*
* Copyright (C) 2020 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.test.utils;
import android.os.Handler;
import android.os.SystemClock;
import androidx.annotation.Nullable;
import androidx.media3.common.C;
import androidx.media3.common.Format;
import androidx.media3.common.VideoSize;
import androidx.media3.common.util.Assertions;
import androidx.media3.common.util.UnstableApi;
import androidx.media3.exoplayer.DecoderCounters;
import androidx.media3.exoplayer.ExoPlaybackException;
import androidx.media3.exoplayer.Renderer;
import androidx.media3.exoplayer.video.VideoRendererEventListener;
import org.checkerframework.checker.nullness.qual.MonotonicNonNull;
/** A {@link FakeRenderer} that supports {@link C#TRACK_TYPE_VIDEO}. */
@UnstableApi
public class FakeVideoRenderer extends FakeRenderer {
private final VideoRendererEventListener.EventDispatcher eventDispatcher;
private final DecoderCounters decoderCounters;
private @MonotonicNonNull Format format;
@Nullable private Object output;
private long streamOffsetUs;
private boolean renderedFirstFrameAfterReset;
private boolean mayRenderFirstFrameAfterEnableIfNotStarted;
private boolean renderedFirstFrameAfterEnable;
public FakeVideoRenderer(Handler handler, VideoRendererEventListener eventListener) {
super(C.TRACK_TYPE_VIDEO);
eventDispatcher = new VideoRendererEventListener.EventDispatcher(handler, eventListener);
decoderCounters = new DecoderCounters();
}
@Override
protected void onEnabled(boolean joining, boolean mayRenderStartOfStream)
throws ExoPlaybackException {
super.onEnabled(joining, mayRenderStartOfStream);
eventDispatcher.enabled(decoderCounters);
mayRenderFirstFrameAfterEnableIfNotStarted = mayRenderStartOfStream;
renderedFirstFrameAfterEnable = false;
}
@Override
protected void onStreamChanged(Format[] formats, long startPositionUs, long offsetUs)
throws ExoPlaybackException {
super.onStreamChanged(formats, startPositionUs, offsetUs);
streamOffsetUs = offsetUs;
renderedFirstFrameAfterReset = false;
}
@Override
protected void onStopped() {
super.onStopped();
eventDispatcher.droppedFrames(/* droppedFrameCount= */ 0, /* elapsedMs= */ 0);
eventDispatcher.reportVideoFrameProcessingOffset(
/* totalProcessingOffsetUs= */ 400000, /* frameCount= */ 10);
}
@Override
protected void onDisabled() {
super.onDisabled();
eventDispatcher.disabled(decoderCounters);
}
@Override
protected void onPositionReset(long positionUs, boolean joining) throws ExoPlaybackException {
super.onPositionReset(positionUs, joining);
renderedFirstFrameAfterReset = false;
}
@Override
protected void onFormatChanged(Format format) {
eventDispatcher.inputFormatChanged(format, /* decoderReuseEvaluation= */ null);
eventDispatcher.decoderInitialized(
/* decoderName= */ "fake.video.decoder",
/* initializedTimestampMs= */ SystemClock.elapsedRealtime(),
/* initializationDurationMs= */ 0);
this.format = format;
}
@Override
public void handleMessage(@MessageType int messageType, @Nullable Object message)
throws ExoPlaybackException {
switch (messageType) {
case MSG_SET_VIDEO_OUTPUT:
output = message;
renderedFirstFrameAfterReset = false;
break;
case Renderer.MSG_SET_AUDIO_ATTRIBUTES:
case Renderer.MSG_SET_AUDIO_SESSION_ID:
case Renderer.MSG_SET_AUX_EFFECT_INFO:
case Renderer.MSG_SET_CAMERA_MOTION_LISTENER:
case Renderer.MSG_SET_CHANGE_FRAME_RATE_STRATEGY:
case Renderer.MSG_SET_SCALING_MODE:
case Renderer.MSG_SET_SKIP_SILENCE_ENABLED:
case Renderer.MSG_SET_VIDEO_FRAME_METADATA_LISTENER:
case Renderer.MSG_SET_VOLUME:
case Renderer.MSG_SET_WAKEUP_LISTENER:
default:
super.handleMessage(messageType, message);
}
}
@Override
protected boolean shouldProcessBuffer(long bufferTimeUs, long playbackPositionUs) {
boolean shouldProcess = super.shouldProcessBuffer(bufferTimeUs, playbackPositionUs);
boolean shouldRenderFirstFrame =
output != null
&& (!renderedFirstFrameAfterEnable
? (getState() == Renderer.STATE_STARTED
|| mayRenderFirstFrameAfterEnableIfNotStarted)
: !renderedFirstFrameAfterReset);
shouldProcess |= shouldRenderFirstFrame && playbackPositionUs >= streamOffsetUs;
@Nullable Object output = this.output;
if (shouldProcess && !renderedFirstFrameAfterReset && output != null) {
@MonotonicNonNull Format format = Assertions.checkNotNull(this.format);
eventDispatcher.videoSizeChanged(
new VideoSize(
format.width, format.height, format.rotationDegrees, format.pixelWidthHeightRatio));
eventDispatcher.renderedFirstFrame(output);
renderedFirstFrameAfterReset = true;
renderedFirstFrameAfterEnable = true;
}
return shouldProcess;
}
}