新增礼物墙相关内容

SVGAlibrary/src/main/java/com/opensource/svgaplayer/bitmap/SVGABitmapDecoder.kt

@@ -0,0 +1,35 @@
+package com.opensource.svgaplayer.bitmap
+
+import android.graphics.Bitmap
+import android.graphics.BitmapFactory
+
+/**
+ * Bitmap 解码器
+ *
+ * <T> 需要加载的数据类型
+ *
+ * Create by im_dsd 2020/7/7 17:39
+ */
+internal abstract class SVGABitmapDecoder<T> {
+
+    fun decodeBitmapFrom(data: T, reqWidth: Int, reqHeight: Int): Bitmap? {
+        return BitmapFactory.Options().run {
+            // 如果期望的宽高是合法的, 则开启检测尺寸模式
+            inJustDecodeBounds = (reqWidth > 0 && reqHeight > 0)
+            inPreferredConfig = Bitmap.Config.RGB_565
+
+            val bitmap = onDecode(data, this)
+            if (!inJustDecodeBounds) {
+                return bitmap
+            }
+
+            // Calculate inSampleSize
+            inSampleSize = BitmapSampleSizeCalculator.calculate(this, reqWidth, reqHeight)
+            // Decode bitmap with inSampleSize set
+            inJustDecodeBounds = false
+            onDecode(data, this)
+        }
+    }
+
+    abstract fun onDecode(data: T, ops: BitmapFactory.Options): Bitmap?
+}