添加字幕的风格设置参数

BFFramework/Classes/PQGPUImage/akfilters/PQSubTitleFilter.swift

@@ -62,35 +62,25 @@ open class PQSubTitleFilter: PQBaseFilter {
             createTexture(currtime: .zero)
         }
     }
-
-    func getWidthWithTitle(text: String, font: UIFont) -> CGFloat {
-        let label = UILabel(frame: CGRect(x: 0, y: 0, width: inputCGSize.width * 0.8, height: 0))
-        label.text = text
-        label.font = font
-        label.sizeToFit()
-        let width = label.frame.size.width
-
-        return width
-    }
-
     func setupLabel(text: String) {
+        
+        if(mSubtitles?.count == 0){
+            BFLog(message: "一个字幕也没有？数据错误！")
+            return
+        }
         var boundingRect: CGRect = .zero
 
+        //字幕风格设置
+        let setting = mSubtitles?.first?.setting
         // 小字幕字号大小
-        var font: Int = 60
-        if inputCGSize.width / inputCGSize.height > 1.5 {
-            font = 68
-        }
-//        if !isBigSubtile {
-        boundingRect = text.boundingRect(with: CGSize(width: inputCGSize.width * 0.8, height: 0), options: .usesLineFragmentOrigin, attributes: [NSAttributedString.Key.font: UIFont.systemFont(ofSize: CGFloat(isBigSubtile ? 114 : font))], context: nil)
-//        }
-
-        let strokeWidth: CGFloat = 6
-        let width = getWidthWithTitle(text: text, font: UIFont.boldSystemFont(ofSize: CGFloat(isBigSubtile ? 114 : font)))
+        let font: Int = setting?.subtitleSize ?? 0
 
+        //根据字号计算高度
+        boundingRect = text.boundingRect(with: CGSize(width: inputCGSize.width * 0.8, height: 0), options: .usesLineFragmentOrigin, attributes: [NSAttributedString.Key.font: UIFont.systemFont(ofSize: CGFloat(isBigSubtile ? 114 : font))], context: nil)
+      
         subtitleLab = PQSubTitleLabel(frame: CGRect(x: 0, y: 0, width: inputCGSize.width * 0.8, height: boundingRect.height > inputCGSize.height - 120 ? inputCGSize.height - 120 : boundingRect.height))
-        subtitleLab.strokeColor = UIColor.black
-        subtitleLab.strokeWidth = strokeWidth
+        subtitleLab.strokeColor = setting?.strokeColor ?? UIColor.black
+        subtitleLab.strokeWidth = setting?.strokeWidth ?? 6
 
         subtitleLab.font = UIFont.boldSystemFont(ofSize: CGFloat(isBigSubtile ? 114 : font))
         subtitleLab.numberOfLines = 0
@@ -98,10 +88,10 @@ open class PQSubTitleFilter: PQBaseFilter {
         BFLog(2, message: "字幕初始化时大小 \(subtitleLab.frame)")
 
         subtitleLab.textAlignment = .center
-        subtitleLab.backgroundColor = UIColor(red: 1, green: 1, blue: 1, alpha: 0.5)
+        subtitleLab.backgroundColor = UIColor(red: setting?.backgroundColor.rgbaf[0] ?? 1, green: setting?.backgroundColor.rgbaf[1] ?? 1, blue: setting?.backgroundColor.rgbaf[2] ?? 1, alpha: CGFloat(setting?.backgroundAlpha ?? 0.5))
 
         subtitleLab.alpha = 1
-        subtitleLab.textColor = UIColor.white
+        subtitleLab.textColor = setting?.fontColor ?? UIColor.white
         subtitleLab.text = text
     }
 
@@ -220,13 +210,23 @@ open class PQSubTitleFilter: PQBaseFilter {
             let texturePropertiesimagetwo = InputTextureProperties(textureCoordinates: inputFramebuffer.orientation.rotationNeededForOrientation(.portrait).textureCoordinates(), texture: subTitleTexture)
 
             BFLog(2, message: "subtitleSize subtitleSize is\(String(describing: subtitleSize)) \(inputCGSize)")
-
-            let size: CGSize = inputCGSize
-            let bounds2: CGRect = CGRect(x: (inputCGSize.width - subtitleSize!.width) / 2, y: inputCGSize.height - subtitleSize!.height - 60, width: subtitleSize!.width, height: subtitleSize!.height)
-            BFLog(2, message: "inputCGSize is \(size)  bounds2\(bounds2)")
+            //根据风格设置不同的Y位置 X 值默认为中间
+          
+            let subtitlePoint = mSubtitles?.first?.setting.subtitlePoint ?? 0
+            var originY:CGFloat = 0.0
+            //下
+            if(subtitlePoint == 0){
+                originY = inputCGSize.height * 0.70 - subtitleSize!.height
+            }else if(subtitlePoint == 1){//中
+                originY = inputCGSize.height / 2.0 - subtitleSize!.height / 2.0
+            }else if(subtitlePoint == 2){//上
+                originY = inputCGSize.height * 0.12
+            }
+            BFLog(2, message: "inputCGSize is \(inputCGSize)  originY:\(originY)")
+ 
             renderQuadWithShader(shader,
                                  uniformSettings: uniformSettings,
-                                 vertexBufferObject: PQGPUImageTools.NXGenerateVBO(for: PQGPUImageTools.computeVertices(viewSize: inputCGSize, _bounds: CGRect(x: (inputCGSize.width - subtitleSize!.width) / 2, y: isBigSubtile ? (inputCGSize.height - subtitleSize!.height - 60) / 2 : inputCGSize.height - subtitleSize!.height - 60, width: subtitleSize!.width, height: subtitleSize!.height))),
+                                 vertexBufferObject: PQGPUImageTools.NXGenerateVBO(for: PQGPUImageTools.computeVertices(viewSize: inputCGSize, _bounds: CGRect(x: (inputCGSize.width - subtitleSize!.width) / 2, y:originY, width: subtitleSize!.width, height: subtitleSize!.height))),
                                  inputTextures: [texturePropertiesimagetwo])
 
             releaseIncomingFramebuffers()