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Diffstat (limited to 'mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/video/VideoRendererEventListener.java')
| -rw-r--r-- | mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/video/VideoRendererEventListener.java | 198 |
1 files changed, 198 insertions, 0 deletions
diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/video/VideoRendererEventListener.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/video/VideoRendererEventListener.java new file mode 100644 index 0000000000..6509a353b2 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/video/VideoRendererEventListener.java @@ -0,0 +1,198 @@ +/* + * Copyright (C) 2016 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 org.mozilla.thirdparty.com.google.android.exoplayer2.video; + +import static org.mozilla.thirdparty.com.google.android.exoplayer2.util.Util.castNonNull; + +import android.os.Handler; +import android.os.SystemClock; +import android.view.Surface; +import android.view.TextureView; +import androidx.annotation.Nullable; +import org.mozilla.thirdparty.com.google.android.exoplayer2.Format; +import org.mozilla.thirdparty.com.google.android.exoplayer2.Renderer; +import org.mozilla.thirdparty.com.google.android.exoplayer2.decoder.DecoderCounters; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Assertions; + +/** + * Listener of video {@link Renderer} events. All methods have no-op default implementations to + * allow selective overrides. + */ +public interface VideoRendererEventListener { + + /** + * Called when the renderer is enabled. + * + * @param counters {@link DecoderCounters} that will be updated by the renderer for as long as it + * remains enabled. + */ + default void onVideoEnabled(DecoderCounters counters) {} + + /** + * Called when a decoder is created. + * + * @param decoderName The decoder that was created. + * @param initializedTimestampMs {@link SystemClock#elapsedRealtime()} when initialization + * finished. + * @param initializationDurationMs The time taken to initialize the decoder in milliseconds. + */ + default void onVideoDecoderInitialized( + String decoderName, long initializedTimestampMs, long initializationDurationMs) {} + + /** + * Called when the format of the media being consumed by the renderer changes. + * + * @param format The new format. + */ + default void onVideoInputFormatChanged(Format format) {} + + /** + * Called to report the number of frames dropped by the renderer. Dropped frames are reported + * whenever the renderer is stopped having dropped frames, and optionally, whenever the count + * reaches a specified threshold whilst the renderer is started. + * + * @param count The number of dropped frames. + * @param elapsedMs The duration in milliseconds over which the frames were dropped. This duration + * is timed from when the renderer was started or from when dropped frames were last reported + * (whichever was more recent), and not from when the first of the reported drops occurred. + */ + default void onDroppedFrames(int count, long elapsedMs) {} + + /** + * Called before a frame is rendered for the first time since setting the surface, and each time + * there's a change in the size, rotation or pixel aspect ratio of the video being rendered. + * + * @param width The video width in pixels. + * @param height The video height in pixels. + * @param unappliedRotationDegrees For videos that require a rotation, this is the clockwise + * rotation in degrees that the application should apply for the video for it to be rendered + * in the correct orientation. This value will always be zero on API levels 21 and above, + * since the renderer will apply all necessary rotations internally. On earlier API levels + * this is not possible. Applications that use {@link TextureView} can apply the rotation by + * calling {@link TextureView#setTransform}. Applications that do not expect to encounter + * rotated videos can safely ignore this parameter. + * @param pixelWidthHeightRatio The width to height ratio of each pixel. For the normal case of + * square pixels this will be equal to 1.0. Different values are indicative of anamorphic + * content. + */ + default void onVideoSizeChanged( + int width, int height, int unappliedRotationDegrees, float pixelWidthHeightRatio) {} + + /** + * Called when a frame is rendered for the first time since setting the surface, and when a frame + * is rendered for the first time since the renderer was reset. + * + * @param surface The {@link Surface} to which a first frame has been rendered, or {@code null} if + * the renderer renders to something that isn't a {@link Surface}. + */ + default void onRenderedFirstFrame(@Nullable Surface surface) {} + + /** + * Called when the renderer is disabled. + * + * @param counters {@link DecoderCounters} that were updated by the renderer. + */ + default void onVideoDisabled(DecoderCounters counters) {} + + /** + * Dispatches events to a {@link VideoRendererEventListener}. + */ + final class EventDispatcher { + + @Nullable private final Handler handler; + @Nullable private final VideoRendererEventListener listener; + + /** + * @param handler A handler for dispatching events, or null if creating a dummy instance. + * @param listener The listener to which events should be dispatched, or null if creating a + * dummy instance. + */ + public EventDispatcher(@Nullable Handler handler, + @Nullable VideoRendererEventListener listener) { + this.handler = listener != null ? Assertions.checkNotNull(handler) : null; + this.listener = listener; + } + + /** Invokes {@link VideoRendererEventListener#onVideoEnabled(DecoderCounters)}. */ + public void enabled(DecoderCounters decoderCounters) { + if (handler != null) { + handler.post(() -> castNonNull(listener).onVideoEnabled(decoderCounters)); + } + } + + /** Invokes {@link VideoRendererEventListener#onVideoDecoderInitialized(String, long, long)}. */ + public void decoderInitialized( + String decoderName, long initializedTimestampMs, long initializationDurationMs) { + if (handler != null) { + handler.post( + () -> + castNonNull(listener) + .onVideoDecoderInitialized( + decoderName, initializedTimestampMs, initializationDurationMs)); + } + } + + /** Invokes {@link VideoRendererEventListener#onVideoInputFormatChanged(Format)}. */ + public void inputFormatChanged(Format format) { + if (handler != null) { + handler.post(() -> castNonNull(listener).onVideoInputFormatChanged(format)); + } + } + + /** Invokes {@link VideoRendererEventListener#onDroppedFrames(int, long)}. */ + public void droppedFrames(int droppedFrameCount, long elapsedMs) { + if (handler != null) { + handler.post(() -> castNonNull(listener).onDroppedFrames(droppedFrameCount, elapsedMs)); + } + } + + /** Invokes {@link VideoRendererEventListener#onVideoSizeChanged(int, int, int, float)}. */ + public void videoSizeChanged( + int width, + int height, + final int unappliedRotationDegrees, + final float pixelWidthHeightRatio) { + if (handler != null) { + handler.post( + () -> + castNonNull(listener) + .onVideoSizeChanged( + width, height, unappliedRotationDegrees, pixelWidthHeightRatio)); + } + } + + /** Invokes {@link VideoRendererEventListener#onRenderedFirstFrame(Surface)}. */ + public void renderedFirstFrame(@Nullable Surface surface) { + if (handler != null) { + handler.post(() -> castNonNull(listener).onRenderedFirstFrame(surface)); + } + } + + /** Invokes {@link VideoRendererEventListener#onVideoDisabled(DecoderCounters)}. */ + public void disabled(DecoderCounters counters) { + counters.ensureUpdated(); + if (handler != null) { + handler.post( + () -> { + counters.ensureUpdated(); + castNonNull(listener).onVideoDisabled(counters); + }); + } + } + + } + +} |