JCResizeTextureView.java

package fm.jiecao.jcvideoplayer_lib;

import android.content.Context;
import android.util.AttributeSet;
import android.view.TextureView;

/**
 * <p>参照Android系统的VideoView的onMeasure方法
 * <br>注意!relativelayout中无法全屏，要嵌套一个linearlayout</p>
 * <p>Referring Android system Video View of onMeasure method
 * <br>NOTE! Can not fullscreen relativelayout, to nest a linearlayout</p>
 *
 * Created by Nathen
 * On 2016/06/02 00:01
 */
public class JCResizeTextureView extends TextureView {
    public JCResizeTextureView(Context context) {
        super(context);
    }

    public JCResizeTextureView(Context context, AttributeSet attrs) {
        super(context, attrs);
    }

    @Override
    protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
        int videoWidth = JCMediaManager.instance().currentVideoWidth;
        int videoHeight = JCMediaManager.instance().currentVideoHeight;

        int width = getDefaultSize(videoWidth, widthMeasureSpec);
        int height = getDefaultSize(videoHeight, heightMeasureSpec);
        if (videoWidth > 0 && videoHeight > 0) {

            int widthSpecMode = MeasureSpec.getMode(widthMeasureSpec);
            int widthSpecSize = MeasureSpec.getSize(widthMeasureSpec);
            int heightSpecMode = MeasureSpec.getMode(heightMeasureSpec);
            int heightSpecSize = MeasureSpec.getSize(heightMeasureSpec);

            if (widthSpecMode == MeasureSpec.EXACTLY && heightSpecMode == MeasureSpec.EXACTLY) {
                // the size is fixed
                width = widthSpecSize;
                height = heightSpecSize;

                // for compatibility, we adjust size based on aspect ratio
                if (videoWidth * height < width * videoHeight) {
                    width = height * videoWidth / videoHeight;
                } else if (videoWidth * height > width * videoHeight) {
                    height = width * videoHeight / videoWidth;
                }
            } else if (widthSpecMode == MeasureSpec.EXACTLY) {
                // only the width is fixed, adjust the height to match aspect ratio if possible
                width = widthSpecSize;
                height = width * videoHeight / videoWidth;
                if (heightSpecMode == MeasureSpec.AT_MOST && height > heightSpecSize) {
                    // couldn't match aspect ratio within the constraints
                    height = heightSpecSize;
                }
            } else if (heightSpecMode == MeasureSpec.EXACTLY) {
                // only the height is fixed, adjust the width to match aspect ratio if possible
                height = heightSpecSize;
                width = height * videoWidth / videoHeight;
                if (widthSpecMode == MeasureSpec.AT_MOST && width > widthSpecSize) {
                    // couldn't match aspect ratio within the constraints
                    width = widthSpecSize;
                }
            } else {
                // neither the width nor the height are fixed, try to use actual video size
                width = videoWidth;
                height = videoHeight;
                if (heightSpecMode == MeasureSpec.AT_MOST && height > heightSpecSize) {
                    // too tall, decrease both width and height
                    height = heightSpecSize;
                    width = height * videoWidth / videoHeight;
                }
                if (widthSpecMode == MeasureSpec.AT_MOST && width > widthSpecSize) {
                    // too wide, decrease both width and height
                    width = widthSpecSize;
                    height = width * videoHeight / videoWidth;
                }
            }
        } else {
            // no size yet, just adopt the given spec sizes
        }
        setMeasuredDimension(width, height);
    }
}