我正在使用Google官方sample使用Camera API 2来处理视频录制。但问题是我无法全屏显示,因为我将屏幕方向仅限于肖像。这是我编辑的xml和official xml。
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent">
<AutoFitTextureView
android:id="@+id/texture"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:layout_alignParentStart="true"
android:layout_alignParentTop="true" />
<FrameLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"
android:layout_alignParentLeft="true"
android:layout_alignParentStart="true">
<Button
android:id="@+id/video"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:text="@string/label_record" />
<ImageView
android:id="@+id/info"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center_vertical|right"
android:contentDescription="Description"
android:padding="20dp"
android:src="@drawable/ic_more" />
</FrameLayout>
</RelativeLayout>
我认为这里将视频屏幕大小按宽高比设置为TextureView
,但我无法全屏显示。非常感谢任何帮助。
mVideoSize = chooseVideoSize(map.getOutputSizes(MediaRecorder.class));
mPreviewSize = chooseOptimalSize(map.getOutputSizes(SurfaceTexture.class), width, height, mVideoSize);
int orientation = getResources().getConfiguration().orientation;
if (orientation == Configuration.ORIENTATION_LANDSCAPE) {
mTextureView.setAspectRatio(mPreviewSize.getWidth(), mPreviewSize.getHeight());
} else {
mTextureView.setAspectRatio(mPreviewSize.getHeight(), mPreviewSize.getWidth());
}
答案 0 :(得分:2)
您需要处理预览尺寸以控制录制的屏幕尺寸。使用相同的chooseVideoSize
方法,通过获取SurfaceTexture
类的输出大小来全屏预览。
private static Size chooseVideoSize(Size[] choices) {
for (Size size : choices) {
if (size.getWidth() == size.getHeight() * 4 / 3 && size.getWidth() <= 1080) {
return size;
}
}
Log.e(TAG, "Couldn't find any suitable video size");
return choices[choices.length - 1];
}
即
mPreviewSize = chooseVideoSize(map.getOutputSizes(SurfaceTexture.class));
答案 1 :(得分:1)
也许您可以实现一种缩放方法,将TextureView
缩放并旋转到正确的方向。
private void transformImage(int width, int height) {
if (mPreviewSize == null || mTextureView == null) {
return;
}
Matrix matrix = new Matrix();
int rotation = getWindowManager().getDefaultDisplay().getRotation();
RectF textureRectF = new RectF(0, 0, width, height);
RectF previewRectF = new RectF(0, 0, mPreviewSize.getHeight(), mPreviewSize.getWidth());
float centerX = textureRectF.centerX();
float centerY = textureRectF.centerY();
if (rotation == Surface.ROTATION_90 || rotation == Surface.ROTATION_270) {
previewRectF.offset(centerX - previewRectF.centerX(),
centerY - previewRectF.centerY());
matrix.setRectToRect(textureRectF, previewRectF, Matrix.ScaleToFit.FILL);
float scale = Math.max((float) width / mPreviewSize.getWidth(),
(float) height / mPreviewSize.getHeight());
matrix.postScale(scale, scale, centerX, centerY);
matrix.postRotate(90 * (rotation - 2), centerX, centerY);
}
mTextureView.setTransform(matrix);
}
之后你应该从onResume
调用transform方法:
public void onResume() {
super.onResume();
if (mTextureView.isAvailable()) {
transformImage(mTextureView.getWidth(), mTextureView.getHeight());
} else {
mTextureView.setSurfaceTextureListener(mSurfaceTextureListener);
}
}
并SurfaceTextureListener.Callback
:
private TextureView.SurfaceTextureListener mSurfaceTextureListener =
new TextureView.SurfaceTextureListener() {
@Override
public void onSurfaceTextureAvailable(SurfaceTexture surface, int width, int height) {
transformImage(width, height);
}
@Override
public void onSurfaceTextureSizeChanged(SurfaceTexture surface, int width, int height) {
}
@Override
public boolean onSurfaceTextureDestroyed(SurfaceTexture surface) {
return false;
}
@Override
public void onSurfaceTextureUpdated(SurfaceTexture surface) {
}
};