fix: 修复镜像逻辑错误

Closes #6

Author: BzCoder

LibMediaPicker/src/main/java/me/bzcoder/mediapicker/cameralibrary/CameraInterface.java

@@ -488,7 +488,7 @@ public void onPictureTaken(byte[] data, Camera camera) {
                 } else if (SELECTED_CAMERA == CAMERA_FRONT_POSITION) {
                     //翻转bitmap (-1,1)左右翻转  (1,-1)上下翻转
                     matrix.setRotate(360 - nowAngle);
-                    if (!isMirror) {
+                    if (isMirror) {
                         matrix.postScale(-1, 1);
                     }
                 }

LibMediaPicker/src/main/java/me/bzcoder/mediapicker/config/MediaPickerConfig.java

@@ -19,7 +19,7 @@ public class MediaPickerConfig {
     private boolean countable;
 
     /**
-     * 前置摄像头拍摄是否启用镜像 默认开启
+     * 前置摄像头拍摄是否启用镜像
      */
     private boolean isMirror;