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...n/java/com/example/platform/graphics/ultrahdr/display/DisplayingUltraHDRUsing3PLibrary.kt
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| Original file line number | Diff line number | Diff line change |
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| @@ -0,0 +1,260 @@ | ||
| /* | ||
| * Copyright 2023 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 | ||
| * | ||
| * https://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.example.platform.graphics.ultrahdr.display | ||
|
|
||
| import android.content.pm.ActivityInfo | ||
| import android.graphics.Bitmap | ||
| import android.graphics.drawable.BitmapDrawable | ||
| import android.graphics.drawable.Drawable | ||
| import android.net.Uri | ||
| import android.os.Build.VERSION_CODES | ||
| import android.os.Bundle | ||
| import android.view.LayoutInflater | ||
| import android.view.View | ||
| import android.view.ViewGroup | ||
| import android.widget.RadioButton | ||
| import androidx.annotation.RequiresApi | ||
| import androidx.fragment.app.Fragment | ||
| import androidx.lifecycle.lifecycleScope | ||
| import coil.ImageLoader | ||
| import coil.request.ImageRequest | ||
| import com.bumptech.glide.Glide | ||
| import com.bumptech.glide.request.target.CustomTarget | ||
| import com.bumptech.glide.request.target.CustomViewTarget | ||
| import com.bumptech.glide.request.transition.Transition | ||
| import com.example.platform.graphics.ultrahdr.databinding.DisplayingUltrahdrUsing3pLibraryBinding | ||
| import com.facebook.common.executors.CallerThreadExecutor | ||
| import com.facebook.common.references.CloseableReference | ||
| import com.facebook.datasource.DataSource | ||
| import com.facebook.drawee.backends.pipeline.Fresco | ||
| import com.facebook.imagepipeline.datasource.BaseBitmapDataSubscriber | ||
| import com.facebook.imagepipeline.image.CloseableImage | ||
| import com.facebook.imagepipeline.request.ImageRequestBuilder | ||
| import com.google.android.catalog.framework.annotations.Sample | ||
| import kotlinx.coroutines.Dispatchers | ||
| import kotlinx.coroutines.launch | ||
| import kotlinx.coroutines.withContext | ||
|
|
||
| @Sample( | ||
| name = "Displaying UltraHDR (3P Libraries)", | ||
| description = "This sample demonstrates using the various popular image loading library to" + | ||
| " detect the presence of a gainmap to enable HDR mode when displaying an UltraHDR image", | ||
| documentation = "https://github.com/bumptech/glide", | ||
| tags = ["UltraHDR"], | ||
| ) | ||
| @RequiresApi(VERSION_CODES.UPSIDE_DOWN_CAKE) | ||
| class DisplayingUltraHDRUsing3PLibrary : Fragment() { | ||
| private enum class Library(val value: Int) { | ||
| GLIDE(0), | ||
| FRESCO(1), | ||
| COIL(2); | ||
|
|
||
| companion object { | ||
| fun fromInt(value: Int) = Library.values().first { it.value == value } | ||
| } | ||
| } | ||
|
|
||
| /** | ||
| * Android ViewBinding. | ||
| */ | ||
| private var _binding: DisplayingUltrahdrUsing3pLibraryBinding? = null | ||
| private val binding get() = _binding!! | ||
|
|
||
| /** | ||
| * Current 3p library selected. | ||
| */ | ||
| private lateinit var currentLibrary: Library | ||
|
|
||
| override fun onCreate(savedInstanceState: Bundle?) { | ||
| super.onCreate(savedInstanceState) | ||
|
|
||
| // Initialize Fresco Library | ||
| if (!Fresco.hasBeenInitialized()) Fresco.initialize(requireContext()) | ||
| } | ||
|
|
||
| override fun onCreateView( | ||
| inflater: LayoutInflater, | ||
| container: ViewGroup?, | ||
| savedInstanceState: Bundle?, | ||
| ): View { | ||
| _binding = DisplayingUltrahdrUsing3pLibraryBinding.inflate(inflater, container, false) | ||
| return binding.root | ||
| } | ||
|
|
||
| override fun onViewCreated(view: View, savedInstanceState: Bundle?) { | ||
| super.onViewCreated(view, savedInstanceState) | ||
| binding.colorModeControls.setWindow(requireActivity().window) | ||
|
|
||
| // Disable color mode controls to demonstrate 3P libraries enabling hdr mode when a | ||
| // gainmap is is detected. | ||
| binding.colorModeControls.binding.ultrahdrColorModeSdr.isEnabled = false | ||
| binding.colorModeControls.binding.ultrahdrColorModeSdr.text = "SDR (Automatic)" | ||
| binding.colorModeControls.binding.ultrahdrColorModeHdr.isEnabled = false | ||
| binding.colorModeControls.binding.ultrahdrColorModeHdr.text = "HDR (Automatic)" | ||
|
|
||
| binding.librarySelectionGroup.setOnCheckedChangeListener { group, i -> | ||
| val selected = group.findViewById<RadioButton>(i) | ||
| val index = group.indexOfChild(selected) | ||
| currentLibrary = Library.fromInt(index) | ||
| loadWithSelectedLibrary(SDR_IMAGE_URL) | ||
| } | ||
|
|
||
| binding.optionSdrImage.setOnClickListener { loadWithSelectedLibrary(SDR_IMAGE_URL) } | ||
| binding.optionUltrahdrImage.setOnClickListener { loadWithSelectedLibrary(ULTRAHDR_IMAGE) } | ||
|
|
||
| // Initially load using Glide. | ||
| binding.modeGlide.isChecked = true | ||
| } | ||
|
|
||
| /** | ||
| * Load the image with the currently selected library. | ||
| */ | ||
| private fun loadWithSelectedLibrary(url: String) { | ||
| // Initially null out image bitmap | ||
| binding.imageContainer.setImageBitmap(null) | ||
|
|
||
| when (currentLibrary) { | ||
| Library.GLIDE -> loadImageWithGlide(url) | ||
| Library.FRESCO -> loadImageWithFresco(url) | ||
| Library.COIL -> loadImageWithCoil(url) | ||
| } | ||
|
|
||
| // Disable corresponding button. | ||
| when (url) { | ||
| SDR_IMAGE_URL -> { | ||
| binding.optionSdrImage.isEnabled = false | ||
| binding.optionUltrahdrImage.isEnabled = true | ||
| } | ||
|
|
||
| ULTRAHDR_IMAGE -> { | ||
| binding.optionSdrImage.isEnabled = true | ||
| binding.optionUltrahdrImage.isEnabled = false | ||
| } | ||
| } | ||
| } | ||
|
|
||
| /** | ||
| * Load an image using [Glide]. | ||
| */ | ||
| private fun loadImageWithGlide(path: String) { | ||
| Glide.with(this) | ||
| .asBitmap() | ||
| .load(Uri.parse(path)) | ||
| .into(target) | ||
| } | ||
|
|
||
| /** | ||
| * Using [Glide]s [CustomTarget] class, we can access the given [Bitmap] to check for the | ||
| * presence of a gainmap, indicating that we should enable the HDR color mode. | ||
| * | ||
| * The same could be done with [CustomViewTarget] as well. | ||
| */ | ||
| private val target: CustomTarget<Bitmap> = object : CustomTarget<Bitmap>() { | ||
| override fun onResourceReady(resource: Bitmap, transition: Transition<in Bitmap>?) { | ||
| binding.imageContainer.setImageBitmap(resource) | ||
|
|
||
| // Set color mode of the activity to the correct color mode. | ||
| requireActivity().window.colorMode = when (resource.hasGainmap()) { | ||
| true -> ActivityInfo.COLOR_MODE_HDR | ||
| else -> ActivityInfo.COLOR_MODE_DEFAULT | ||
| } | ||
| } | ||
|
|
||
| override fun onLoadCleared(placeholder: Drawable?) { | ||
| // clear resources if need be. | ||
| } | ||
| } | ||
|
|
||
| /** | ||
| * Load an image using [Fresco]. | ||
| */ | ||
| private fun loadImageWithFresco(path: String) { | ||
| val imageRequest = ImageRequestBuilder | ||
| .newBuilderWithSource(Uri.parse(path)) | ||
| .build() | ||
|
|
||
| // Use Fresco's ImagePipeline to fetch and decode image into Bitmap subscriber. | ||
| Fresco.getImagePipeline() | ||
| .fetchDecodedImage(imageRequest, this) | ||
| .apply { subscribe(subscriber, CallerThreadExecutor.getInstance()) } | ||
| } | ||
|
|
||
| /** | ||
| * Using [Fresco]'s [BaseBitmapDataSubscriber] class so we can access the given [Bitmap] to | ||
| * check for the, presence of a gainmap, indicating that we should enable the HDR color mode. | ||
| */ | ||
| private val subscriber = object : BaseBitmapDataSubscriber() { | ||
| override fun onNewResultImpl(bitmap: Bitmap?) { | ||
| binding.imageContainer.setImageBitmap(bitmap) | ||
| lifecycleScope.launch { | ||
| // Set color mode of the activity to the correct color mode. | ||
| requireActivity().window.colorMode = when (bitmap?.hasGainmap()) { | ||
| true -> ActivityInfo.COLOR_MODE_HDR | ||
| else -> ActivityInfo.COLOR_MODE_DEFAULT | ||
| } | ||
| } | ||
| } | ||
|
|
||
| override fun onFailureImpl(dataSource: DataSource<CloseableReference<CloseableImage>>) { | ||
| dataSource.close() | ||
| } | ||
| } | ||
|
|
||
| /** | ||
| * Load an image using [ImageLoader] & [ImageRequest] from Coil. | ||
| */ | ||
| private fun loadImageWithCoil(url: String) { | ||
| lifecycleScope.launch(Dispatchers.IO) { | ||
| val loader = ImageLoader(requireContext()) | ||
| val request = ImageRequest.Builder(requireContext()) | ||
| .data(url) | ||
| .crossfade(true) | ||
| .crossfade(100) | ||
| .build() | ||
|
|
||
| val result = loader.execute(request) | ||
|
|
||
| // convert bitmap from drawable. | ||
| val bitmap = (result.drawable as BitmapDrawable).bitmap | ||
|
|
||
| // Activate HDR mode if bitmap has gain map | ||
| withContext(Dispatchers.Main) { | ||
| binding.imageContainer.setImageBitmap(bitmap) | ||
| requireActivity().window.colorMode = when (bitmap.hasGainmap()) { | ||
| true -> ActivityInfo.COLOR_MODE_HDR | ||
| else -> ActivityInfo.COLOR_MODE_DEFAULT | ||
| } | ||
| } | ||
| } | ||
| } | ||
|
|
||
| override fun onDetach() { | ||
| super.onDetach() | ||
| binding.colorModeControls.detach() | ||
| } | ||
|
|
||
| companion object { | ||
| /** | ||
| * Sample UltraHDR images paths | ||
| */ | ||
| private const val SDR_IMAGE_URL = | ||
| "https://raw.githubusercontent.com/android/platform-samples/main/samples/graphics/" + | ||
| "ultrahdr/src/main/assets/sdr/night_highrise.jpg" | ||
| private const val ULTRAHDR_IMAGE = | ||
| "https://raw.githubusercontent.com/android/platform-samples/main/samples/graphics/" + | ||
| "ultrahdr/src/main/assets/gainmaps/night_highrise.jpg" | ||
| } | ||
| } |
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