76 lines
2.9 KiB
Java
76 lines
2.9 KiB
Java
/*
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* Copyright (C) 2021 pedroSG94.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package com.pedro.encoder.utils;
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import android.graphics.Matrix;
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import android.graphics.PointF;
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import android.graphics.Rect;
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import android.graphics.RectF;
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import android.hardware.Camera;
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import android.hardware.camera2.params.Face;
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import android.os.Build;
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import androidx.annotation.RequiresApi;
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import com.pedro.encoder.input.video.CameraHelper;
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/**
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* Created by pedro on 17/10/18.
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*/
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public class FaceDetectorUtil {
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@RequiresApi(api = Build.VERSION_CODES.LOLLIPOP)
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public static FaceParsed camera2Parse(Face face, Rect scaleSensor, int sensorOrientation, int rotation, CameraHelper.Facing facing) {
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return cameraParse(face.getBounds(), scaleSensor, sensorOrientation, rotation, facing, 100);
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}
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public static FaceParsed camera1Parse(Camera.Face face, Rect scaleSensor, int sensorOrientation, int rotation, CameraHelper.Facing facing) {
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return cameraParse(face.rect, scaleSensor, sensorOrientation, rotation, facing, 50);
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}
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/**
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* Parse bounds from camera1 and camera2 api to scale and position used in OpenGlView filters.
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*/
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private static FaceParsed cameraParse(Rect face, Rect scaleSensor, int sensorOrientation, int streamRotation,
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CameraHelper.Facing facing, float translate) {
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// Face Detection Matrix
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Matrix matrix = new Matrix();
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// Need mirror for front camera.
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matrix.setScale(facing == CameraHelper.Facing.FRONT ? -1 : 1, 1);
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matrix.postRotate(streamRotation);
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// 100f because we are doing scale value by percent to work with filters.
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float s1 = 100f / scaleSensor.width();
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float s2 = 100f / scaleSensor.height();
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// Camera2 sensor could be rotated. We need check it and fix.
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if (sensorOrientation == 90 || sensorOrientation == 270) {
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matrix.postScale(s2, s1);
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} else {
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matrix.postScale(s1, s2);
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}
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matrix.postTranslate(translate, translate);
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Rect uRect = new Rect(face);
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RectF rectF = new RectF(uRect);
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matrix.mapRect(rectF);
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uRect = new Rect((int) rectF.left, (int) rectF.top, (int) rectF.right, (int) rectF.bottom);
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// Filter is draw from top left corner. Move position from center to corner.
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PointF positionParsed = new PointF(uRect.centerX() - uRect.width() / 2f, uRect.centerY() - uRect.height() / 2f);
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PointF sizeParsed = new PointF(uRect.width(), uRect.height());
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return new FaceParsed(positionParsed, sizeParsed);
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}
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}
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