FaceTrackDemo
使用虹软的FreeSDK做了个打开相机跟踪人脸画框的demo，适配屏幕方向和前后置相机。 FaceCameraHelper提供了相关回调和一些配置属性。
//FaceTrackListener回调接口
public interface FaceTrackListener {
/**
* 回传相机预览数据和人脸框位置
*
* @param nv21 相机预览数据
* @param ftFaceList 待处理的人脸列表
*/
void onPreviewData(byte[] nv21, List<AFT_FSDKFace> ftFaceList);
/**
* 当出现异常时执行
*
* @param e 异常信息
*/
void onFail(Exception e);
/**
* 当相机打开时执行
*
* @param camera 相机实例
*/
void onCameraOpened(Camera camera);
/**
* 根据自己的需要可以删除部分人脸，比如指定区域、留下最大人脸等
*
* @param ftFaceList 人脸列表
*/
void adjustFaceRectList(List<AFT_FSDKFace> ftFaceList);
/**
* 请求人脸特征后的回调
*
* @param frFace 人脸特征数据
* @param requestId 请求码
*/
void onFaceFeatureInfoGet(@Nullable AFR_FSDKFace frFace, Integer requestId);
}
//功能属性设置
faceCameraHelper = new FaceCameraHelper.Builder()
.activity(this)
.specificCameraId(Camera.CameraInfo.CAMERA_FACING_FRONT)
.isMirror(true) //是否镜像显示，只有TextureView支持此选项
.faceRectColor(Color.YELLOW) // 人脸框颜色
.faceRectThickness(5) //人脸框厚度
.previewOn(previewView) //预览画面显示控件，支持SurfaceView和TextureView
.faceTrackListener(this) //监听回调设置
.frEngine(frEngine)
.ftEngine(ftEngine)
.faceRectView(faceRectView) //人脸框绘制的控件
.frThreadNum(5) //FR线程队列的数量
.currentTrackId(1) // 设置一个初始的trackID,后续在此增加
.build();
//根据屏幕方向和CameraID调整绘制的人脸框
/**
* @param ftRect FT人脸框
* @param previewWidth 相机预览的宽度
* @param previewHeight 相机预览高度
* @param canvasWidth 画布的宽度
* @param canvasHeight 画布的高度
* @param cameraOri 相机预览方向
* @param mCameraId 相机ID
* @return
*/
public static Rect adjustRect(Rect ftRect, int previewWidth, int previewHeight, int canvasWidth, int canvasHeight, int cameraOri, int mCameraId,boolean isMirror) {
if (ftRect == null) {
return null;
}
Rect rect = new Rect(ftRect);
if (canvasWidth < canvasHeight) {
int t = previewHeight;
previewHeight = previewWidth;
previewWidth = t;
}
float horizontalRatio;
float verticalRatio;
if (cameraOri == 0 || cameraOri == 180) {
horizontalRatio = (float) canvasWidth / (float) previewWidth;
verticalRatio = (float) canvasHeight / (float) previewHeight;
} else {
horizontalRatio = (float) canvasHeight / (float) previewHeight;
verticalRatio = (float) canvasWidth / (float) previewWidth;
}
rect.left *= horizontalRatio;
rect.right *= horizontalRatio;
rect.top *= verticalRatio;
rect.bottom *= verticalRatio;
Rect newRect = new Rect();
switch (cameraOri) {
case 0:
if (mCameraId == Camera.CameraInfo.CAMERA_FACING_FRONT) {
newRect.left = canvasWidth - rect.right;
newRect.right = canvasWidth - rect.left;
} else {
newRect.left = rect.left;
newRect.right = rect.right;
}
newRect.top = rect.top;
newRect.bottom = rect.bottom;
break;
case 90:
newRect.right = canvasWidth - rect.top;
newRect.left = canvasWidth - rect.bottom;
if (mCameraId == Camera.CameraInfo.CAMERA_FACING_FRONT) {
newRect.top = canvasHeight - rect.right;
newRect.bottom = canvasHeight - rect.left;
} else {
newRect.top = rect.left;
newRect.bottom = rect.right;
}
break;
case 180:
newRect.top = canvasHeight - rect.bottom;
newRect.bottom = canvasHeight - rect.top;
if (mCameraId == Camera.CameraInfo.CAMERA_FACING_FRONT) {
newRect.left = rect.left;
newRect.right = rect.right;
} else {
newRect.left = canvasWidth - rect.right;
newRect.right = canvasWidth - rect.left;
}
break;
case 270:
newRect.left = rect.top;
newRect.right = rect.bottom;
if (mCameraId == Camera.CameraInfo.CAMERA_FACING_FRONT) {
newRect.top = rect.left;
newRect.bottom = rect.right;
} else {
newRect.top = canvasHeight - rect.right;
newRect.bottom = canvasHeight - rect.left;
}
break;
default:
break;
}
if (isMirror){
int left = newRect.left;
int right = newRect.right;
newRect.left = canvasWidth - right;
newRect.right = canvasWidth - left;
}
return newRect;
}
//FR数据获取
/**
* 请求获取人脸特征数据，需要传入FR的参数，以下参数同 AFR_FSDKEngine.AFR_FSDK_ExtractFRFeature
*
* @param nv21 NV21格式的图像数据
* @param faceRect 人脸框
* @param width 图像宽度
* @param height 图像高度
* @param format 图像格式
* @param ori 人脸在图像中的朝向
* @param requestId 请求人脸特征的请求码
*/
public void requestFaceFeature(byte[] nv21, Rect faceRect, int width, int height, int format, int ori, Integer requestId) {
if (faceTrackListener != null) {
if (frEngine != null && nv21Data == null) {
nv21Data = new byte[nv21.length];
System.arraycopy(nv21, 0, nv21Data, 0, nv21.length);
executor.execute(new FaceRecognizeRunnable(faceRect, width, height, format, ori, requestId));
}
//下面这个回调根据需求选择是否需要添加
else if (frEngine!=null){
faceTrackListener.onFaceFeatureInfoGet(null,requestId);
}
}
}
//demo截图
