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/*
* Copyright (C) 2018 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;
/** A listener for metadata corresponding to video being rendered. */
public interface VideoListener {
/**
* Called each time there's a change in the size 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 android.view.TextureView} can apply the
* rotation by calling {@link android.view.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 each time there's a change in the size of the surface onto which the video is being
* rendered.
*
* @param width The surface width in pixels. May be {@link
* com.google.android.exoplayer2.C#LENGTH_UNSET} if unknown, or 0 if the video is not rendered
* onto a surface.
* @param height The surface height in pixels. May be {@link
* com.google.android.exoplayer2.C#LENGTH_UNSET} if unknown, or 0 if the video is not rendered
* onto a surface.
*/
default void onSurfaceSizeChanged(int width, int height) {}
/**
* 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 a video track was selected.
*/
default void onRenderedFirstFrame() {}
}
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