//
//  FUCamera.h
//  FUAPIDemo
//
//  Created by liuyang on 2016/12/26.
//  Copyright © 2016年 liuyang. All rights reserved.
//

#import <Foundation/Foundation.h>
#import <AVFoundation/AVFoundation.h>
@class FUCamera;
typedef NS_ENUM( NSInteger, FUCameraFocusModel) {
    /* 先找人脸对焦模式 */
    FUCameraModelAutoFace,
    /* 固定点对焦模式 */
    FUCameraModelChangeless
};


@protocol FUCameraDelegate <NSObject>

- (void)didOutputVideoSampleBuffer:(CMSampleBufferRef)sampleBuffer;

@end

@protocol FUCameraDataSource <NSObject>

- (CGPoint)faceCenterInImage:(FUCamera *)camera ;

@end


@interface FUCamera : NSObject
@property (nonatomic, weak) id<FUCameraDelegate> delegate;
@property (nonatomic, weak) id<FUCameraDataSource> dataSource;
@property (nonatomic, assign, readonly) BOOL isFrontCamera;
@property (assign, nonatomic) int captureFormat; //采集格式
@property (copy  , nonatomic) dispatch_queue_t  videoCaptureQueue;//视频采集的队列
@property (copy  , nonatomic) dispatch_queue_t  audioCaptureQueue;//音频采集队列
@property (copy  , nonatomic) dispatch_queue_t  tmpCaptureQueue;//视频采集的队列


- (instancetype)initWithCameraPosition:(AVCaptureDevicePosition)cameraPosition captureFormat:(int)captureFormat;

- (void)startCapture;

- (void)stopCapture;

- (void)changeCameraInputDeviceisFront:(BOOL)isFront;

- (void)takePhotoAndSave;

- (void)startRecord;

- (void)stopRecordWithCompletionHandler:(void (^)(NSString *videoPath))handler;

- (void)addAudio;

- (void)removeAudio;

/* 当前分辨率是否支持前后置 */
-(BOOL)supportsAVCaptureSessionPreset:(BOOL)isFront;

/**
 设置采集方向

 @param orientation 方向
 */
- (void)setCaptureVideoOrientation:(AVCaptureVideoOrientation)orientation;

/**
 查询当前相机最大曝光补偿信息

 @param current 当前
 @param max 最大
 @param min 最小
 */
- (void)getCurrentExposureValue:(float *)current max:(float *)max min:(float *)min;

/**
 恢复以屏幕中心自动连续对焦和曝光
 */
- (void)resetFocusAndExposureModes;

/**
 修改采集分辨率

 @param sessionPreset string constants
 */
-(BOOL)changeSessionPreset:(AVCaptureSessionPreset)sessionPreset;


/**
 修改采集视频镜像关系

 @param videoMirrored  videoMirrore
 */
-(void)changeVideoMirrored:(BOOL)videoMirrored;

/**
 修改帧率
 
 在iOS上，使用AvCaptureDevice的setActiveFormat:和AvCaptureSession的setSessionPreset:是互斥的。
 如果 frameRate <= 30 setActiveFormat 则该设备所连接的会话将其预设更改为avCaptureSessionPresetinputPriority
 */
-(void)changeVideoFrameRate:(int)frameRate;


- (void)setExposureValue:(float)value;

/// 设置曝光模式和兴趣点
/// @param focusMode 对焦模式
/// @param exposureMode 曝光模式
/// @param point 兴趣点
/// @param monitorSubjectAreaChange   是否监听主题变化
- (void)focusWithMode:(AVCaptureFocusMode)focusMode exposeWithMode:(AVCaptureExposureMode)exposureMode atDevicePoint:(CGPoint)point monitorSubjectAreaChange:(BOOL)monitorSubjectAreaChange;


///  修改对焦模式
/// @param modle 对焦模式
-(void)cameraChangeModle:(FUCameraFocusModel)modle;

//  缩放
//  可用于模拟对焦
- (void)setZoomValue:(CGFloat)zoomValue;

@end