优化

app/build.gradle

@@ -246,6 +246,8 @@ dependencies {
     //加解密类库
     implementation('cn.hutool:hutool-crypto:5.7.22')
 
+    implementation('com.github.android:renderscript-intrinsics-replacement-toolkit:b6363490c3')
+
     //代码编辑com.github.AmrDeveloper:CodeView已集成到应用内
     //epubLib集成到应用内
 

app/src/main/java/io/legado/app/help/BlurTransformation.kt

@@ -1,75 +0,0 @@
-package io.legado.app.help
-
-import android.annotation.TargetApi
-import android.content.Context
-import android.graphics.Bitmap
-import android.os.Build
-import android.renderscript.Allocation
-import android.renderscript.Element
-import android.renderscript.RenderScript
-import android.renderscript.ScriptIntrinsicBlur
-import androidx.annotation.IntRange
-import com.bumptech.glide.load.engine.bitmap_recycle.BitmapPool
-import com.bumptech.glide.load.resource.bitmap.CenterCrop
-import java.security.MessageDigest
-import kotlin.math.min
-import kotlin.math.roundToInt
-
-
-/**
- * 模糊
- * @radius: 0..25
- */
-class BlurTransformation(
-    context: Context,
-    @IntRange(from = 0, to = 25) private val radius: Int
-) : CenterCrop() {
-
-    private val rs: RenderScript = RenderScript.create(context)
-
-    @TargetApi(Build.VERSION_CODES.JELLY_BEAN_MR1)
-    override fun transform(
-        pool: BitmapPool,
-        toTransform: Bitmap,
-        outWidth: Int,
-        outHeight: Int
-    ): Bitmap {
-        val transform = super.transform(pool, toTransform, outWidth, outHeight)
-        //图片缩小1/2
-        val width = (min(outWidth, transform.width) / 2f).roundToInt()
-        val height = (min(outHeight, transform.height) / 2f).roundToInt()
-        val blurredBitmap = Bitmap.createScaledBitmap(transform, width, height, false)
-        // Allocate memory for Renderscript to work with
-        //分配用于渲染脚本的内存
-        val input = Allocation.createFromBitmap(
-            rs,
-            blurredBitmap,
-            Allocation.MipmapControl.MIPMAP_FULL,
-            Allocation.USAGE_SHARED
-        )
-        val output = Allocation.createTyped(rs, input.type)
-
-        // Load up an instance of the specific script that we want to use.
-        //加载我们想要使用的特定脚本的实例。
-        val script = ScriptIntrinsicBlur.create(rs, Element.U8_4(rs))
-        script.setInput(input)
-
-        // Set the blur radius
-        //设置模糊半径0..25
-        script.setRadius(radius.toFloat())
-
-        // Start the ScriptIntrinsicBlur
-        //启动 ScriptIntrinsicBlur,
-        script.forEach(output)
-
-        // Copy the output to the blurred bitmap
-        //将输出复制到模糊的位图
-        output.copyTo(blurredBitmap)
-
-        return blurredBitmap
-    }
-
-    override fun updateDiskCacheKey(messageDigest: MessageDigest) {
-        messageDigest.update("blur transformation".toByteArray())
-    }
-}

app/src/main/java/io/legado/app/help/config/ThemeConfig.kt

@@ -73,7 +73,7 @@ object ThemeConfig {
         if (bgCfg.second == 0) {
             return bgImage
         }
-        return bgImage.stackBlur(bgCfg.second.toFloat())
+        return bgImage.stackBlur(bgCfg.second)
     }
 
     fun upConfig() {

app/src/main/java/io/legado/app/help/glide/BlurTransformation.kt

@@ -0,0 +1,41 @@
+package io.legado.app.help.glide
+
+import android.annotation.TargetApi
+import android.graphics.Bitmap
+import android.os.Build
+import androidx.annotation.IntRange
+import com.bumptech.glide.load.engine.bitmap_recycle.BitmapPool
+import com.bumptech.glide.load.resource.bitmap.CenterCrop
+import io.legado.app.utils.stackBlur
+import java.security.MessageDigest
+import kotlin.math.min
+import kotlin.math.roundToInt
+
+
+/**
+ * 模糊
+ * @radius: 0..25
+ */
+class BlurTransformation(
+    @IntRange(from = 0, to = 25) private val radius: Int
+) : CenterCrop() {
+
+    @TargetApi(Build.VERSION_CODES.JELLY_BEAN_MR1)
+    override fun transform(
+        pool: BitmapPool,
+        toTransform: Bitmap,
+        outWidth: Int,
+        outHeight: Int
+    ): Bitmap {
+        val transform = super.transform(pool, toTransform, outWidth, outHeight)
+        //图片缩小1/2
+        val width = (min(outWidth, transform.width) / 5f).roundToInt()
+        val height = (min(outHeight, transform.height) / 5f).roundToInt()
+        val blurredBitmap = Bitmap.createScaledBitmap(transform, width, height, false)
+        return blurredBitmap.stackBlur(radius)
+    }
+
+    override fun updateDiskCacheKey(messageDigest: MessageDigest) {
+        messageDigest.update("blur transformation".toByteArray())
+    }
+}

app/src/main/java/io/legado/app/model/BookCover.kt

@@ -11,10 +11,10 @@ import io.legado.app.R
 import io.legado.app.constant.PreferKey
 import io.legado.app.data.entities.BaseSource
 import io.legado.app.data.entities.Book
-import io.legado.app.help.BlurTransformation
 import io.legado.app.help.CacheManager
 import io.legado.app.help.DefaultData
 import io.legado.app.help.config.AppConfig
+import io.legado.app.help.glide.BlurTransformation
 import io.legado.app.help.glide.ImageLoader
 import io.legado.app.help.glide.OkHttpModelLoader
 import io.legado.app.model.analyzeRule.AnalyzeRule
@@ -86,7 +86,7 @@ object BookCover {
         loadOnlyWifi: Boolean = false
     ): RequestBuilder<Drawable> {
         val loadBlur = ImageLoader.load(context, defaultDrawable)
-            .apply(RequestOptions.bitmapTransform(BlurTransformation(context, 25)))
+            .apply(RequestOptions.bitmapTransform(BlurTransformation(25)))
         return if (AppConfig.useDefaultCover) {
             loadBlur.centerCrop()
         } else {
@@ -95,7 +95,7 @@ object BookCover {
                 .apply(options)
                 .transition(DrawableTransitionOptions.withCrossFade(1500))
                 .thumbnail(loadBlur)
-                .apply(RequestOptions.bitmapTransform(BlurTransformation(context, 25)))
+                .apply(RequestOptions.bitmapTransform(BlurTransformation(25)))
                 .centerCrop()
         }
     }

app/src/main/java/io/legado/app/utils/BitmapUtils.kt

@@ -5,12 +5,8 @@ package io.legado.app.utils
 import android.content.Context
 import android.graphics.*
 import android.graphics.Bitmap.Config
-import android.renderscript.Allocation
-import android.renderscript.Element
-import android.renderscript.RenderScript
-import android.renderscript.ScriptIntrinsicBlur
 import android.view.View
-import splitties.init.appCtx
+import com.google.android.renderscript.Toolkit
 import java.io.FileInputStream
 import java.io.IOException
 import kotlin.math.*
@@ -250,33 +246,9 @@ fun Bitmap.changeSize(newWidth: Int, newHeight: Int): Bitmap {
 /**
  * 高斯模糊
  */
-fun Bitmap.stackBlur(radius: Float = 8f): Bitmap? {
+fun Bitmap.stackBlur(radius: Int = 8): Bitmap {
-    val rs = RenderScript.create(appCtx)
     val blurredBitmap = this.copy(Config.ARGB_8888, true)
-
+    return Toolkit.blur(blurredBitmap, radius)
-    //分配用于渲染脚本的内存
-    val input = Allocation.createFromBitmap(
-        rs,
-        blurredBitmap,
-        Allocation.MipmapControl.MIPMAP_FULL,
-        Allocation.USAGE_SHARED
-    )
-    val output = Allocation.createTyped(rs, input.type)
-
-    //加载我们想要使用的特定脚本的实例。
-    val script = ScriptIntrinsicBlur.create(rs, Element.U8_4(rs))
-    script.setInput(input)
-
-    //设置模糊半径
-    script.setRadius(radius)
-
-    //启动 ScriptIntrinsicBlur
-    script.forEach(output)
-
-    //将输出复制到模糊的位图
-    output.copyTo(blurredBitmap)
-
-    return blurredBitmap
 }
 
 /**