导出时支持是否添加水印

BFFramework/Classes/PQGPUImage/akfilters/Tools/PQCompositionExporter.swift

@@ -44,6 +44,9 @@ public class PQCompositionExporter {
   
     /// Use serial queue to ensure that the picture is smooth
     var createFiltersQueue: DispatchQueue!
+    
+    //导出时是否添加水印
+    var isAddWatermark:Bool = false
 
     public init(asset: AVAsset, videoComposition: AVVideoComposition? = nil, audioMix: AVAudioMix? = nil, filters: [ImageProcessingOperation]? = nil,stickers:[PQEditVisionTrackMaterialsModel]? = nil, animationTool: AVVideoCompositionCoreAnimationTool? = nil, exportURL: URL) {
         self.asset = asset
@@ -191,6 +194,46 @@ public class PQCompositionExporter {
             }
             input!.removeAllTargets()
             let currentTarget: ImageSource = input!
+            
+            //是否添加水印
+            var weatMaskFilter:PQBaseFilter?
+            if(isAddWatermark){
+                //创建水印filter
+                let  weatMaskSticker:PQEditVisionTrackMaterialsModel = PQEditVisionTrackMaterialsModel.init()
+                weatMaskSticker.locationPath = "watermark"
+                weatMaskSticker.timelineIn = mStickers?.first?.timelineIn ?? 0.0
+                weatMaskSticker.timelineOut =  mStickers?.last?.timelineIn ?? 0.0
+                /*
+                1080P        最短的一边 ≥1080    100%     距右40，距下30
+                720P         最短的一边 ≥720，＜1080    66.60%    距右27，距下20
+                480P及以下    最短的一边＜720    44.40%    距右18，距下14
+                */
+                let postion:PQEditMaterialPositionModel = PQEditMaterialPositionModel.init()
+                let minSlider = min(input?.mShowVidoSize.width ?? 0, input?.mShowVidoSize.height ?? 0)
+                postion.width = 350 
+                postion.height = 100
+                if(minSlider >= 1080){
+                    postion.x = Int(input?.mShowVidoSize.width ?? 0) - 40 - postion.width
+                    postion.y = Int(input?.mShowVidoSize.height ?? 0) - 30 - postion.height
+                }else if(minSlider >= 720 && minSlider < 1080){
+                    postion.width = Int(Float(postion.width) * 0.666)
+                    postion.height = Int(Float(postion.height) * 0.666)
+                    postion.x = Int(input?.mShowVidoSize.width ?? 0) - 27 - postion.width
+                    postion.y = Int(input?.mShowVidoSize.height ?? 0) - 20 - postion.height
+                
+                }else if(minSlider < 720){
+                    postion.width = Int(Float(postion.width) * 0.444)
+                    postion.height = Int(Float(postion.height) * 0.444)
+                    postion.x = Int(input?.mShowVidoSize.width ?? 0) - 18 - postion.width
+                    postion.y = Int(input?.mShowVidoSize.height ?? 0) - 14 - postion.height
+                    
+                }
+                weatMaskSticker.materialPosition = postion
+               
+                weatMaskFilter = PQImageFilter(sticker: weatMaskSticker, isExport: true)
+                
+            }
+            
             if(currentSticker?.type == StickerType.IMAGE.rawValue && showGaussianBlur){
                 //高斯层
                 let json = currentSticker?.toJSONString(prettyPrint: false)
@@ -209,12 +252,25 @@ public class PQCompositionExporter {
                 currentTarget.addTarget(showGaussianFitler, atTargetIndex: 0)
                 
                 iosb.addTarget(showFitler!)
-     
-                showFitler?.addTarget(output!, atTargetIndex: 0)
+                
+                if(weatMaskFilter != nil){
+                    showFitler?.addTarget(weatMaskFilter!, atTargetIndex: 0)
+                    weatMaskFilter?.addTarget(output!,atTargetIndex: 0)
+                }else{
+                    showFitler?.addTarget(output!, atTargetIndex: 0)
+                }
+              
             }else{
-                currentTarget.addTarget(showFitler!, atTargetIndex: 0)
-                showFitler?.addTarget(output!, atTargetIndex: 0)
-
+                if(weatMaskFilter != nil){
+                    
+                    currentTarget.addTarget(showFitler!, atTargetIndex: 0)
+                    showFitler?.addTarget(weatMaskFilter!, atTargetIndex: 0)
+                    weatMaskFilter?.addTarget(output!, atTargetIndex: 0)
+                }else{
+                    currentTarget.addTarget(showFitler!, atTargetIndex: 0)
+                    showFitler?.addTarget(output!, atTargetIndex: 0)
+                }
+ 
             }
 
             lastshowSticker = currentSticker