| /* |
| * Copyright (C) 2019 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License |
| */ |
| |
| package com.android.systemui.statusbar |
| |
| import android.content.Context |
| import android.graphics.Bitmap |
| import android.graphics.Canvas |
| import android.graphics.Point |
| import android.graphics.Rect |
| import android.renderscript.Allocation |
| import android.renderscript.Element |
| import android.renderscript.RenderScript |
| import android.renderscript.ScriptIntrinsicBlur |
| import android.util.Log |
| import android.util.MathUtils |
| import com.android.internal.graphics.ColorUtils |
| import com.android.systemui.statusbar.notification.MediaNotificationProcessor |
| |
| import javax.inject.Inject |
| import javax.inject.Singleton |
| |
| private const val TAG = "MediaArtworkProcessor" |
| private const val COLOR_ALPHA = (255 * 0.7f).toInt() |
| private const val BLUR_RADIUS = 25f |
| private const val DOWNSAMPLE = 6 |
| |
| @Singleton |
| class MediaArtworkProcessor @Inject constructor() { |
| |
| private val mTmpSize = Point() |
| private var mArtworkCache: Bitmap? = null |
| |
| fun processArtwork(context: Context, artwork: Bitmap): Bitmap? { |
| if (mArtworkCache != null) { |
| return mArtworkCache |
| } |
| val renderScript = RenderScript.create(context) |
| val blur = ScriptIntrinsicBlur.create(renderScript, Element.U8_4(renderScript)) |
| var input: Allocation? = null |
| var output: Allocation? = null |
| var inBitmap: Bitmap? = null |
| try { |
| @Suppress("DEPRECATION") |
| context.display?.getSize(mTmpSize) |
| val rect = Rect(0, 0, artwork.width, artwork.height) |
| MathUtils.fitRect(rect, Math.max(mTmpSize.x / DOWNSAMPLE, mTmpSize.y / DOWNSAMPLE)) |
| inBitmap = Bitmap.createScaledBitmap(artwork, rect.width(), rect.height(), |
| true /* filter */) |
| // Render script blurs only support ARGB_8888, we need a conversion if we got a |
| // different bitmap config. |
| if (inBitmap.config != Bitmap.Config.ARGB_8888) { |
| val oldIn = inBitmap |
| inBitmap = oldIn.copy(Bitmap.Config.ARGB_8888, false /* isMutable */) |
| oldIn.recycle() |
| } |
| val outBitmap = Bitmap.createBitmap(inBitmap.width, inBitmap.height, |
| Bitmap.Config.ARGB_8888) |
| |
| input = Allocation.createFromBitmap(renderScript, inBitmap, |
| Allocation.MipmapControl.MIPMAP_NONE, Allocation.USAGE_GRAPHICS_TEXTURE) |
| output = Allocation.createFromBitmap(renderScript, outBitmap) |
| |
| blur.setRadius(BLUR_RADIUS) |
| blur.setInput(input) |
| blur.forEach(output) |
| output.copyTo(outBitmap) |
| |
| val swatch = MediaNotificationProcessor.findBackgroundSwatch(artwork) |
| |
| val canvas = Canvas(outBitmap) |
| canvas.drawColor(ColorUtils.setAlphaComponent(swatch.rgb, COLOR_ALPHA)) |
| return outBitmap |
| } catch (ex: IllegalArgumentException) { |
| Log.e(TAG, "error while processing artwork", ex) |
| return null |
| } finally { |
| input?.destroy() |
| output?.destroy() |
| blur.destroy() |
| inBitmap?.recycle() |
| } |
| } |
| |
| fun clearCache() { |
| mArtworkCache?.recycle() |
| mArtworkCache = null |
| } |
| } |