[SilkFX] The very first version of lut demo app (3e1b42cf) · Commits · e / os / android_frameworks_base

tests/graphics/SilkFX/AndroidManifest.xml

+5 −0

Original line number	Diff line number	Diff line
		@@ -70,5 +70,10 @@
		</intent-filter>
		</activity>

		<activity android:name=".hdr.LutTestActivity"
		android:theme="@style/Theme.LutTestTheme"
		android:label="Lut Test Examples"
		android:exported="true"/>

		</application>
		</manifest>

tests/graphics/SilkFX/res/layout/lut_test.xml

0 → 100644

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		<?xml version="1.0" encoding="utf-8"?>
		<!--
		~ Copyright (C) 2025 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.
		-->

		<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
		android:layout_width="match_parent"
		android:layout_height="match_parent"
		android:orientation="vertical">

		<SurfaceView
		android:id="@+id/surfaceView"
		android:layout_width="match_parent"
		android:layout_height="300dp"
		android:layout_weight="1"
		android:layout_marginTop="16dp" />

		<RadioGroup android:id="@+id/lut_option"
		android:layout_width="match_parent"
		android:layout_height="wrap_content"
		android:orientation="horizontal">

		<RadioButton android:id="@+id/lut_1d"
		android:layout_width="wrap_content"
		android:layout_weight="1"
		android:layout_height="wrap_content"
		android:text="1D Lut" />

		<RadioButton android:id="@+id/lut_3d"
		android:layout_width="wrap_content"
		android:layout_weight="1"
		android:layout_height="wrap_content"
		android:text="3D Lut" />

		<RadioButton android:id="@+id/no_lut"
		android:layout_width="wrap_content"
		android:layout_weight="1"
		android:layout_height="wrap_content"
		android:text="Original image" />
		</RadioGroup>

		</LinearLayout>
		No newline at end of file

tests/graphics/SilkFX/res/values/style.xml

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		@@ -24,6 +24,13 @@
		<item name="buttonStyle">@style/AppTheme.Button</item>
		<item name="colorAccent">#bbffffff</item>
		</style>
		<style name="Theme.LutTestTheme" parent="Theme.AppCompat.Dialog">
		<item name="android:windowBlurBehindEnabled">true</item>
		<item name="android:backgroundDimEnabled">false</item>
		<item name="android:windowElevation">0dp</item>
		<item name="buttonStyle">@style/AppTheme.Button</item>
		<item name="colorAccent">#bbffffff</item>
		</style>
		<style name="AppTheme.Button" parent="Widget.AppCompat.Button">
		<item name="android:textColor">#ffffffff</item>
		</style>

tests/graphics/SilkFX/src/com/android/test/silkfx/Main.kt

+3 −1

Original line number	Diff line number	Diff line
		@@ -30,6 +30,7 @@ import com.android.test.silkfx.app.EXTRA_COMMON_CONTROLS
		import com.android.test.silkfx.app.EXTRA_LAYOUT
		import com.android.test.silkfx.app.EXTRA_TITLE
		import com.android.test.silkfx.hdr.GlowActivity
		import com.android.test.silkfx.hdr.LutTestActivity
		import com.android.test.silkfx.materials.GlassActivity
		import com.android.test.silkfx.materials.BackgroundBlurActivity
		import kotlin.reflect.KClass
		@@ -57,7 +58,8 @@ private val AllDemos = listOf(
		Demo("Gainmap Image", R.layout.gainmap_image),
		Demo("Gainmap Decode Test", R.layout.gainmap_decode_test, commonControls = false),
		Demo("Gainmap Transform Test", R.layout.gainmap_transform_test,
		commonControls = false)
		commonControls = false),
		Demo("Lut Test", LutTestActivity::class)
		)),
		DemoGroup("Materials", listOf(
		Demo("Glass", GlassActivity::class),

tests/graphics/SilkFX/src/com/android/test/silkfx/hdr/LutTestActivity.kt

0 → 100644

+206 −0

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		/*
		* Copyright (C) 2025 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.test.silkfx.hdr

		import android.graphics.Bitmap
		import android.graphics.ColorSpace
		import android.graphics.ImageDecoder
		import android.graphics.Matrix
		import android.graphics.HardwareBufferRenderer
		import android.graphics.RenderNode
		import android.hardware.DisplayLuts
		import android.hardware.HardwareBuffer
		import android.hardware.LutProperties
		import android.os.Bundle
		import android.view.SurfaceControl
		import android.view.SurfaceView
		import android.view.SurfaceHolder
		import androidx.appcompat.app.AppCompatActivity
		import android.widget.RadioGroup
		import android.util.Log
		import com.android.test.silkfx.R
		import java.io.IOException
		import java.util.concurrent.CountDownLatch
		import java.util.concurrent.Executors

		class LutTestActivity : AppCompatActivity() {

		private lateinit var surfaceView: SurfaceView
		private var surfaceControl: SurfaceControl? = null
		private var currentBitmap: Bitmap? = null
		private var renderNode = RenderNode("LutRenderNode")
		private var currentLutType: Int = R.id.no_lut // Store current LUT type
		private val TAG = "LutTestActivity"
		private val renderExecutor = Executors.newSingleThreadExecutor()

		/** Called when the activity is first created. */
		override fun onCreate(savedInstanceState: Bundle?) {
		super.onCreate(savedInstanceState)
		setContentView(R.layout.lut_test)

		surfaceView = findViewById(R.id.surfaceView)

		surfaceView.holder.addCallback(object : SurfaceHolder.Callback {
		override fun surfaceCreated(holder: SurfaceHolder) {
		createChildSurfaceControl()
		loadImage("gainmaps/sunflower.jpg", holder)
		currentBitmap?.let {
		createAndRenderHardwareBuffer(holder, it, getCurrentLut())
		}
		}

		override fun surfaceChanged(
		holder: SurfaceHolder,
		format: Int,
		width: Int,
		height: Int
		) {
		}

		override fun surfaceDestroyed(holder: SurfaceHolder) {
		}
		})

		var lutOption = findViewById<RadioGroup>(R.id.lut_option)
		// handle RadioGroup selection changes
		lutOption.setOnCheckedChangeListener(
		RadioGroup.OnCheckedChangeListener { _, id ->
		currentLutType = id
		if (surfaceControl != null) {
		applyCurrentLut()
		}
		}
		)
		}

		private fun applyCurrentLut() {
		when (currentLutType) {
		R.id.lut_1d -> {
		currentBitmap?.let {
		createAndRenderHardwareBuffer(surfaceView.holder, it, get1DLut())
		}
		}
		R.id.lut_3d -> {
		currentBitmap?.let {
		createAndRenderHardwareBuffer(surfaceView.holder, it, get3DLut())
		}
		}
		R.id.no_lut -> {
		currentBitmap?.let {
		createAndRenderHardwareBuffer(surfaceView.holder, it, null)
		}
		}
		}
		}

		private fun getCurrentLut(): DisplayLuts {
		when (currentLutType) {
		R.id.lut_1d -> return get1DLut()
		R.id.lut_3d -> return get3DLut()
		R.id.no_lut -> return DisplayLuts()
		}
		return DisplayLuts()
		}

		private fun get3DLut(): DisplayLuts {
		var luts = DisplayLuts()
		val entry = DisplayLuts.Entry(
		floatArrayOf(0.5f, 0.5f, 0.5f, 0.5f, 0.5f, 0.5f, 0.5f, 0.5f,
		0f, 0f, 0f, 0f, 0f, 0f, 0f, 0f,
		1f, 1f, 1f, 1f, 1f, 1f, 1f, 1f),
		LutProperties.THREE_DIMENSION,
		LutProperties.SAMPLING_KEY_RGB
		)
		luts.set(entry)
		return luts
		}

		private fun get1DLut(): DisplayLuts {
		var luts = DisplayLuts()
		val entry = DisplayLuts.Entry(
		floatArrayOf(0.1f, 0.1f, 0.1f, 0.1f, 0.1f, 0.1f, 0.1f, 0.1f),
		LutProperties.ONE_DIMENSION,
		LutProperties.SAMPLING_KEY_RGB
		)
		luts.set(entry)
		return luts
		}

		private fun createChildSurfaceControl() {
		surfaceView.surfaceControl?.let { parentSC ->
		surfaceControl = SurfaceControl.Builder()
		.setParent(parentSC)
		.setBufferSize(surfaceView.width, surfaceView.height)
		.setName("LutTestSurfaceControl")
		.setHidden(false)
		.build()
		}
		}

		private fun loadImage(assetPath: String, holder: SurfaceHolder) {
		try {
		val source = ImageDecoder.createSource(assets, assetPath)
		currentBitmap = ImageDecoder.decodeBitmap(source) { decoder, info, source ->
		decoder.allocator = ImageDecoder.ALLOCATOR_SOFTWARE
		}
		} catch (e: IOException) {
		Log.e(TAG, "Error loading image: ${e.message}")
		e.printStackTrace()
		}
		}

		private fun createAndRenderHardwareBuffer(holder: SurfaceHolder, bitmap: Bitmap, luts: DisplayLuts?) {
		val imageWidth = bitmap.width
		val imageHeight = bitmap.height

		val buffer = HardwareBuffer.create(
		imageWidth,
		imageHeight,
		HardwareBuffer.RGBA_8888,
		1, // layers
		HardwareBuffer.USAGE_GPU_COLOR_OUTPUT or HardwareBuffer.USAGE_GPU_SAMPLED_IMAGE
		)
		val renderer = HardwareBufferRenderer(buffer)
		renderNode.setPosition(0, 0, buffer.width, buffer.height)
		renderer.setContentRoot(renderNode)

		val canvas = renderNode.beginRecording()

		// calculate the scale to match the screen
		val surfaceWidth = holder.surfaceFrame.width()
		val surfaceHeight = holder.surfaceFrame.height()

		val scaleX = surfaceWidth.toFloat() / imageWidth.toFloat()
		val scaleY = surfaceHeight.toFloat() / imageHeight.toFloat()
		val scale = minOf(scaleX, scaleY)

		val matrix = Matrix().apply{ postScale(scale, scale) }
		canvas.drawBitmap(bitmap, matrix, null)
		renderNode.endRecording()

		val colorSpace = ColorSpace.get(ColorSpace.Named.BT2020_HLG)
		val latch = CountDownLatch(1)
		renderer.obtainRenderRequest().setColorSpace(colorSpace).draw(renderExecutor) { renderResult ->
		surfaceControl?.let {
		SurfaceControl.Transaction().setBuffer(it, buffer, renderResult.fence).setLuts(it, luts).apply()
		}
		latch.countDown()
		}
		latch.await() // Wait for the fence to complete.
		buffer.close()
		}
		}
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