如何在Android的Kotlin中为webrtc SurfaceViewRenderer帧大小以及视图大小设置动画？

时间：2018-12-14 02:24:25

标签： android kotlin webrtc surfaceview android-motionlayout

我正在为Android应用程序开发一个webrtc。关于webrtc连接的一切都按预期工作，但是现在我给SurfaceViewRenderer设置了动画，因此远程视频从填充整个屏幕过渡到右上角的小矩形，反之亦然（从小到大） 。

我正在使用MotionLayout和MotionScene来实现这一目标，其中SurfaceViewRenderer带有几个定义SurfaceViewRenderer属性的状态，这些属性会随着时间的变化而变化，从而获得良好而平滑的调整大小效果。 / p>

视图本身会随着时间的推移适当调整大小，但是动画播放期间视频会停止播放，因此，从小到大时，最后一个视频帧会保持很小，而视图会增大其大小。在动画结束时，当视频播放恢复时，将出现一个新的大视频帧并填充视图。因此，我得到的不是像从小到大的平滑调整大小效果，而是变得更像 skip 效果，在这里，小视频播放停止，然后在几毫秒后恢复播放并变大。

我尝试过的事情

  • 要深入研究涉及的类（VideoRenderer，VideoTrack，<android.support.constraint.motion.MotionLayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:app="http://schemas.android.com/apk/res-auto" android:layout_width="match_parent" android:layout_height="match_parent" android:layout_alignParentEnd="true" android:layout_alignParentRight="true" android:orientation="vertical" app:layoutDescription="@xml/motion_master_view_scene" android:id="@+id/webRtcViewsLayout"> <org.webrtc.SurfaceViewRenderer android:id="@+id/slaveVideoView" android:layout_width="300dp" android:layout_height="169dp" android:layout_alignParentEnd="true" android:layout_alignParentRight="true" android:layout_marginEnd="84dp" app:layout_constraintEnd_toEndOf="parent" app:layout_constraintTop_toTopOf="parent" /> <org.webrtc.SurfaceViewRenderer android:id="@+id/masterVideoView" android:layout_width="match_parent" android:layout_height="match_parent" /> </android.support.constraint.motion.MotionLayout> ），以找到一种方法来获取当前视频帧并调整其大小，但没有找到方法< / li>

复制步骤

要重现确切的场景将非常困难，因为您将需要与信令服务器一起设置一个webrtc环境，但是我将共享我正在使用的代码段。我的主要布局如下：

MotionScene

然后我的motion_master_view_scene.xml <?xml version="1.0" encoding="utf-8"?> <MotionScene xmlns:motion="http://schemas.android.com/apk/res-auto" xmlns:android="http://schemas.android.com/apk/res/android" xmlns:app="http://schemas.android.com/apk/res-auto"> <Transition motion:duration="500"> </Transition> <StateSet motion:defaultState="@id/localMasterState"> <State android:id="@+id/bothMinimizedState" motion:constraints="@id/bothMinimizedConstraintSet"></State> <State android:id="@+id/localMasterState" motion:constraints="@id/localMasterConstraintSet"></State> </StateSet> <ConstraintSet android:id="@+id/bothMinimizedConstraintSet"> <Constraint android:id="@+id/masterVideoView" android:layout_width="300dp" android:layout_height="169dp" android:layout_alignParentEnd="true" android:layout_alignParentRight="true" android:layout_marginTop="196dp" android:layout_marginRight="10dp" app:layout_constraintEnd_toEndOf="parent" app:layout_constraintTop_toTopOf="parent" /> <Constraint android:id="@+id/slaveVideoView" android:layout_width="300dp" android:layout_height="169dp" android:layout_alignParentEnd="true" android:layout_alignParentRight="true" android:layout_marginTop="10dp" android:layout_marginRight="10dp" app:layout_constraintEnd_toEndOf="parent" app:layout_constraintTop_toTopOf="parent" /> </ConstraintSet> <ConstraintSet android:id="@+id/localMasterConstraintSet"> <Constraint android:id="@+id/masterVideoView" android:layout_width="match_parent" android:layout_height="match_parent" /> <Constraint android:id="@+id/slaveVideoView" android:layout_width="300dp" android:layout_height="169dp" android:layout_alignParentEnd="true" android:layout_alignParentRight="true" android:layout_marginTop="10dp" android:layout_marginRight="10dp" app:layout_constraintEnd_toEndOf="parent" app:layout_constraintTop_toTopOf="parent" /> </ConstraintSet> </MotionScene> 看起来像这样：

webRtcViewsLayout.transitionToState(newState)

最后，我通过执行此操作在MainActivity中的状态之间进行更改

java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example.calculator/com.example.calculator.MainActivity}: android.view.InflateException: Binary XML file line #15: Failed to resolve attribute at index 1: TypedValue{t=0x2/d=0x7f030003 a=-1}
    at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:3037)
    at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:3172)
    at android.app.servertransaction.LaunchActivityItem.execute(LaunchActivityItem.java:78)
    at android.app.servertransaction.TransactionExecutor.executeCallbacks(TransactionExecutor.java:108)
    at android.app.servertransaction.TransactionExecutor.execute(TransactionExecutor.java:68)
    at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1906)
    at android.os.Handler.dispatchMessage(Handler.java:106)
    at android.os.Looper.loop(Looper.java:193)
    at android.app.ActivityThread.main(ActivityThread.java:6863)
    at java.lang.reflect.Method.invoke(Native Method)
    at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:537)
    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:858)
 Caused by: android.view.InflateException: Binary XML file line #15: Failed to resolve attribute at index 1: TypedValue{t=0x2/d=0x7f030003 a=-1}
 Caused by: java.lang.UnsupportedOperationException: Failed to resolve attribute at index 1: TypedValue{t=0x2/d=0x7f030003 a=-1}
    at android.content.res.TypedArray.getLayoutDimension(TypedArray.java:794)
    at android.view.ViewGroup$LayoutParams.setBaseAttributes(ViewGroup.java:7767)
    at android.view.ViewGroup$MarginLayoutParams.<init>(ViewGroup.java:7958)
    at android.widget.LinearLayout$LayoutParams.<init>(LinearLayout.java:1997)
    at android.support.design.widget.AppBarLayout$LayoutParams.<init>(AppBarLayout.java:743)
    at android.support.design.widget.AppBarLayout.generateLayoutParams(AppBarLayout.java:366)
    at android.support.design.widget.AppBarLayout.generateLayoutParams(AppBarLayout.java:110)
    at android.view.LayoutInflater.rInflate(LayoutInflater.java:865)
    at android.view.LayoutInflater.rInflateChildren(LayoutInflater.java:824)
    at android.view.LayoutInflater.rInflate(LayoutInflater.java:866)
    at android.view.LayoutInflater.rInflateChildren(LayoutInflater.java:824)
    at android.view.LayoutInflater.inflate(LayoutInflater.java:515)
    at android.view.LayoutInflater.inflate(LayoutInflater.java:423)
    at android.view.LayoutInflater.inflate(LayoutInflater.java:374)
    at android.support.v7.app.AppCompatDelegateImpl.setContentView(AppCompatDelegateImpl.java:469)
    at android.support.v7.app.AppCompatActivity.setContentView(AppCompatActivity.java:140)
    at android.databinding.DataBindingUtil.setContentView(DataBindingUtil.java:303)
    at android.databinding.DataBindingUtil.setContentView(DataBindingUtil.java:284)
    at com.example.calculator.MainActivity.onCreate(MainActivity.java:26)
    at android.app.Activity.performCreate(Activity.java:7149)
    at android.app.Activity.performCreate(Activity.java:7140)
    at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1288)
    at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:3017)
    at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:3172)
    at android.app.servertransaction.LaunchActivityItem.execute(LaunchActivityItem.java:78)
    at android.app.servertransaction.TransactionExecutor.executeCallbacks(TransactionExecutor.java:108)
    at android.app.servertransaction.TransactionExecutor.execute(TransactionExecutor.java:68)
    at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1906)
    at android.os.Handler.dispatchMessage(Handler.java:106)
    at android.os.Looper.loop(Looper.java:193)
    at android.app.ActivityThread.main(ActivityThread.java:6863)
    at java.lang.reflect.Method.invoke(Native Method)
    at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:537)
    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:858)

有关如何解决这种情况的任何线索？

0 个答案:

没有答案
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