move flutter_filament plugin to federated structure

flutter_filament_federated/flutter_filament/android/.gitignore

@@ -0,0 +1,8 @@
+*.iml
+.gradle
+/local.properties
+/.idea/workspace.xml
+/.idea/libraries
+.DS_Store
+/build
+/captures

flutter_filament_federated/flutter_filament/android/CMakeLists.txt

@@ -0,0 +1,61 @@
+cmake_minimum_required(VERSION 3.10)  
+
+include_directories(../ios/src)
+include_directories(../ios/include)
+include_directories(../ios/include/filament)
+include_directories(src/main/cpp)
+link_directories(src/main/jniLibs/${ANDROID_ABI}) 
+set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=c++17")
+
+add_library(flutter_filament_android SHARED
+  "${CMAKE_CURRENT_SOURCE_DIR}/../ios/src/FlutterFilamentApi.cpp"
+  "${CMAKE_CURRENT_SOURCE_DIR}/../ios/src/FlutterFilamentFFIApi.cpp"
+  "${CMAKE_CURRENT_SOURCE_DIR}/src/main/cpp/FilamentAndroid.cpp"
+  "${CMAKE_CURRENT_SOURCE_DIR}/../ios/src/SceneManager.cpp"
+  "${CMAKE_CURRENT_SOURCE_DIR}/../ios/src/FilamentViewer.cpp"
+  "${CMAKE_CURRENT_SOURCE_DIR}/../ios/src/StreamBufferAdapter.cpp"
+  "${CMAKE_CURRENT_SOURCE_DIR}/../ios/src/TimeIt.cpp"
+  "${CMAKE_CURRENT_SOURCE_DIR}/../ios/src/camutils/Manipulator.cpp"
+  "${CMAKE_CURRENT_SOURCE_DIR}/../ios/src/camutils/Bookmark.cpp"
+)
+
+add_library(FILAMENT_SHADERS SHARED 
+  "${CMAKE_CURRENT_SOURCE_DIR}/../ios/include/material/image.c"
+)
+
+target_link_libraries(
+  flutter_filament_android
+  FILAMENT_SHADERS
+  -landroid
+  -llog
+  -lgltfio_core 
+  -lfilament 
+  -lbackend 
+  -lgeometry 
+  -lfilameshio 
+  -lfilamat 
+  -lfilabridge
+  -lcamutils 
+  -lfilaflat 
+  -ldracodec 
+  -libl 
+  -lktxreader 
+  -limageio
+  -limage
+  -lutils 
+  -ltinyexr
+  -lstb  
+  -lbluevk 
+  -lvkshaders 
+  -luberzlib 
+  -lsmol-v 
+  -luberarchive 
+  -lmeshoptimizer
+  -lgeometry
+  -lbasis_transcoder
+  -lGLESv3
+  -lEGL
+  -lpng
+  -lz
+  -lzstd
+)

flutter_filament_federated/flutter_filament/android/build.gradle

@@ -0,0 +1,63 @@
+group 'app.polyvox.filament'
+version '1.0-SNAPSHOT'
+
+buildscript {
+    ext.kotlin_version = '1.7.10'
+    repositories {
+        google()
+        mavenCentral()
+    }
+
+    dependencies {
+        classpath 'com.android.tools.build:gradle:7.3.0'
+        classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"
+    }
+}
+
+rootProject.allprojects {
+    repositories {
+        google()
+        mavenCentral()
+    }
+}
+
+apply plugin: 'com.android.library'
+apply plugin: 'kotlin-android'
+
+android {
+    compileSdkVersion 33
+    ndkVersion '25.2.9519653'
+    compileOptions {
+        sourceCompatibility JavaVersion.VERSION_1_8
+        targetCompatibility JavaVersion.VERSION_1_8
+    }
+
+    kotlinOptions {
+        jvmTarget = '1.8'
+    }
+
+    sourceSets {
+        main.java.srcDirs += 'src/main/kotlin'
+    }
+
+    defaultConfig {
+        minSdkVersion 22
+        ndk {
+            abiFilters 'arm64-v8a' // 'x86_64' 'armeabi-v7a' 
+        }
+    }
+    
+    externalNativeBuild {
+        cmake {
+            path "CMakeLists.txt"
+            version "3.18.1"
+        }
+    }
+}
+
+dependencies {
+    implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk8:$kotlin_version"
+    implementation 'net.java.dev.jna:jna:5.10.0@aar'
+    implementation "org.jetbrains.kotlinx:kotlinx-coroutines-core:1.5.2"
+    implementation "org.jetbrains.kotlinx:kotlinx-coroutines-android:1.5.2"
+}

flutter_filament_federated/flutter_filament/android/gradle.properties

@@ -0,0 +1,3 @@
+org.gradle.jvmargs=-Xmx1536M
+android.useAndroidX=true
+android.enableJetifier=true

flutter_filament_federated/flutter_filament/android/gradle/wrapper/gradle-wrapper.properties

@@ -0,0 +1,5 @@
+distributionBase=GRADLE_USER_HOME
+distributionPath=wrapper/dists
+zipStoreBase=GRADLE_USER_HOME
+zipStorePath=wrapper/dists
+distributionUrl=https\://services.gradle.org/distributions/gradle-7.6.3-all.zip

flutter_filament_federated/flutter_filament/android/settings.gradle

@@ -0,0 +1 @@
+rootProject.name = 'flutter_filament'

flutter_filament_federated/flutter_filament/android/src/main/AndroidManifest.xml

@@ -0,0 +1,3 @@
+<manifest xmlns:android="http://schemas.android.com/apk/res/android"
+  package="app.polyvox.filament">
+</manifest>

flutter_filament_federated/flutter_filament/android/src/main/cpp/FilamentAndroid.cpp

@@ -0,0 +1,21 @@
+#include <android/native_window_jni.h>
+#include <android/native_activity.h>
+
+extern "C" {
+
+  #include "FlutterFilamentFFIApi.h"
+
+  void* get_native_window_from_surface(
+    jobject surface,
+    JNIEnv* env
+  ) {
+    void* window = ANativeWindow_fromSurface(env, surface);
+    return window;
+  }
+
+  // this does nothing, but we need it for JNA to return the correct pointer 
+  FilamentRenderCallback make_render_callback_fn_pointer(FilamentRenderCallback callback) {
+    return callback;
+  }
+  
+}

flutter_filament_federated/flutter_filament/android/src/main/kotlin/app/polyvox/filament/FilamentInterop.kt

@@ -0,0 +1,48 @@
+package app.polyvox.filament 
+
+import com.sun.jna.ptr.PointerByReference
+import com.sun.jna.ptr.IntByReference
+
+import android.view.Surface
+
+import android.content.res.AssetManager
+import com.sun.jna.*
+
+open class ResourceBuffer: Structure(), Structure.ByValue {
+    @JvmField var data: Pointer = Pointer(0);
+    @JvmField var size: Int = 0;
+    @JvmField var id: Int = 0;
+    override fun getFieldOrder(): List<String> {
+        return listOf("data", "size", "id")
+    }
+}
+
+interface LoadFilamentResourceFromOwner : Callback {
+    fun loadResourceFromOwner(resourceName: String?, owner: Pointer?): ResourceBuffer
+}
+
+interface FreeFilamentResourceFromOwner : Callback {
+    fun freeResourceFromOwner(rb: ResourceBuffer, owner: Pointer?)
+}
+
+interface RenderCallback : Callback { 
+    fun renderCallback(owner:Pointer?)
+}
+
+interface FilamentInterop : Library {
+
+fun get_native_window_from_surface(surface:Object, env:JNIEnv) : Pointer?;
+fun make_render_callback_fn_pointer(renderCallback:RenderCallback) : Pointer
+fun make_resource_loader(loadResourceFromOwner: LoadFilamentResourceFromOwner, freeResource: FreeFilamentResourceFromOwner, owner:Pointer?) : Pointer;
+fun create_filament_viewer_ffi(context:Pointer, platform:Pointer, loader:Pointer, rc:Pointer, rco:Pointer) : Pointer;
+fun create_swap_chain_ffi(vieer:Pointer?, surface:Pointer?, width:Int, height:Int)
+fun set_background_color_ffi(viewer: Pointer?, r: Float, g: Float, b: Float, a: Float)
+fun update_viewport_and_camera_projection_ffi(viewer: Pointer?, width: Int, height: Int, scale_factor: Float)
+fun render_ffi(viewer: Pointer?)
+fun create_filament_viewer(context:Pointer?, platform:Pointer?, loader:Pointer?) : Pointer;
+fun create_swap_chain(vieer:Pointer?, surface:Pointer?, width:Int, height:Int)
+fun set_background_color(viewer: Pointer?, r: Float, g: Float, b: Float, a: Float)
+fun update_viewport_and_camera_projection(viewer: Pointer?, width: Int, height: Int, scale_factor: Float)
+fun render(viewer: Pointer?, u:Long, a:Pointer?, b:Pointer?, c:Pointer?)
+}
+

flutter_filament_federated/flutter_filament/android/src/main/kotlin/app/polyvox/filament/FlutterFilamentPlugin.kt

@@ -0,0 +1,226 @@
+package app.polyvox.filament
+
+
+import HotReloadPathHelper
+import android.app.Activity
+import android.content.res.AssetManager
+import android.graphics.*
+import android.os.Build
+import android.util.Log
+import android.view.Choreographer
+import android.view.Surface
+import androidx.annotation.NonNull
+import androidx.annotation.RequiresApi
+import androidx.lifecycle.Lifecycle
+import com.sun.jna.*
+import io.flutter.FlutterInjector
+import io.flutter.embedding.engine.FlutterJNI
+import io.flutter.embedding.engine.plugins.FlutterPlugin
+import io.flutter.embedding.engine.plugins.activity.ActivityAware
+import io.flutter.embedding.engine.plugins.activity.ActivityPluginBinding
+import io.flutter.embedding.engine.plugins.lifecycle.HiddenLifecycleReference
+import io.flutter.plugin.common.MethodCall
+import io.flutter.plugin.common.MethodChannel
+import io.flutter.plugin.common.MethodChannel.MethodCallHandler
+import io.flutter.view.TextureRegistry.SurfaceTextureEntry
+import java.io.File
+import java.util.*
+
+class LoadFilamentResourceFromOwnerImpl(plugin:FlutterFilamentPlugin) : LoadFilamentResourceFromOwner {
+  var plugin = plugin
+  override fun loadResourceFromOwner(path: String?, owner: Pointer?): ResourceBuffer {
+    return plugin.loadResourceFromOwner(path, owner)
+  }
+} 
+
+class FreeFilamentResourceFromOwnerImpl(plugin:FlutterFilamentPlugin) : FreeFilamentResourceFromOwner {
+  var plugin = plugin
+  override fun freeResourceFromOwner(rb: ResourceBuffer, owner: Pointer?) {
+    plugin.freeResourceFromOwner(rb, owner)
+  }
+} 
+
+class RenderCallbackImpl(plugin:FlutterFilamentPlugin) : RenderCallback {
+  var plugin = plugin
+  override fun renderCallback(owner:Pointer?) {
+    plugin.renderCallback();
+
+    if(!plugin._surface!!.isValid) {
+      Log.e("ERR", "ERR", null)
+    }
+  }
+}
+
+/** FlutterFilamentPlugin */
+class FlutterFilamentPlugin: FlutterPlugin, MethodCallHandler, ActivityAware, LoadFilamentResourceFromOwner, FreeFilamentResourceFromOwner {
+
+  companion object {
+      const val CHANNEL_NAME = "app.polyvox.filament/event"
+      const val TAG = "FilamentPlugin"
+  }
+
+  private lateinit var channel : MethodChannel
+
+  private lateinit var flutterPluginBinding : FlutterPlugin.FlutterPluginBinding
+
+  private var lifecycle: Lifecycle? = null
+
+  private lateinit var _lib : FilamentInterop
+  
+  var _surfaceTexture: SurfaceTexture? = null
+  private var _surfaceTextureEntry: SurfaceTextureEntry? = null
+  var _surface: Surface? = null
+      
+  private lateinit var activity:Activity
+
+  private var loadResourceWrapper:LoadFilamentResourceFromOwnerImpl = LoadFilamentResourceFromOwnerImpl(this)
+  private var freeResourceWrapper:FreeFilamentResourceFromOwnerImpl = FreeFilamentResourceFromOwnerImpl(this)
+
+  override fun onAttachedToEngine(@NonNull flutterPluginBinding: FlutterPlugin.FlutterPluginBinding) {
+    this.flutterPluginBinding = flutterPluginBinding
+    channel = MethodChannel(flutterPluginBinding.binaryMessenger, CHANNEL_NAME)
+    channel.setMethodCallHandler(this)
+     _lib = Native.loadLibrary("flutter_filament_android", FilamentInterop::class.java, Collections.singletonMap(Library.OPTION_ALLOW_OBJECTS, true))
+  }
+
+  override fun onAttachedToActivity(binding: ActivityPluginBinding) {
+    lifecycle = (binding.lifecycle as? HiddenLifecycleReference)?.lifecycle
+    activity = binding.activity
+    activity.window.setFormat(PixelFormat.RGBA_8888)
+  }
+
+  val _resources:MutableMap<ResourceBuffer,Memory> = mutableMapOf();
+  var _lastId = 1
+
+  override fun loadResourceFromOwner(path: String?, owner: Pointer?): ResourceBuffer {
+      Log.i("flutter_filament", "Loading resource from path $path")
+      var data:ByteArray? = null
+      if(path!!.startsWith("file://")) {
+          data = File(path!!.substring(6)).readBytes()
+      } else {
+          var assetPath = path
+          if(assetPath.startsWith("asset://")) {
+            assetPath = assetPath!!.substring(8)
+          }
+          val loader = FlutterInjector.instance().flutterLoader()
+          val key = loader.getLookupKeyForAsset(assetPath)
+          val hotReloadPath = HotReloadPathHelper.getAssetPath(key, activity.getPackageName())
+          if (hotReloadPath != null) {
+              data = File(hotReloadPath).readBytes()
+          } else {
+              Log.i("flutter_filament", "Loading resource from main asset bundle at ${assetPath}")
+
+              val assetManager: AssetManager = activity.assets
+              try {
+                  data = assetManager.open(key).readBytes()
+                  Log.i("flutter_filament", "Loaded ${data.size} bytes")
+              } catch (e:Exception) {
+                  Log.e("flutter_filament", "Failed to open asset at ${assetPath}", null)
+              }
+          }
+      }
+      val rb = ResourceBuffer();
+      try {
+          if (data != null) {
+              val dataPtr = Memory(data.size.toLong())
+              dataPtr.write(0, data, 0, data.size)
+              rb.data = dataPtr
+              rb.size = data.size
+              rb.id = _lastId
+              _resources[rb] = dataPtr;
+              _lastId++
+          } else {
+              rb.id = 0
+              rb.size = 0
+              rb.data = Pointer(0)
+          }
+      } catch(e:Exception) {
+          Log.e("flutter_filament", "Error setting resource buffer : $e", null);
+      }
+      rb.write();
+      return rb;
+
+  }
+
+  override fun freeResourceFromOwner(rb: ResourceBuffer, owner: Pointer?) {
+    _resources.remove(rb)
+  }
+
+  fun renderCallback() {
+    // noop, log or check surface.valid() is you want 
+  }
+
+
+  @RequiresApi(Build.VERSION_CODES.M)
+  override fun onMethodCall(call: MethodCall, result: MethodChannel.Result) {
+    Log.e("flutter_filament", call.method, null)
+    when (call.method) {
+        "createTexture" -> {
+          if(_surfaceTextureEntry != null) {
+            result.error("TEXTURE_EXISTS", "Texture already exist. Make sure you call destroyTexture first", null)
+            return
+          }
+          val args = call.arguments as List<*>
+          val width = args[0] as Double
+          val height = args[1] as Double
+          if(width <1 || height < 1) {
+              result.error("DIMENSION_MISMATCH","Both dimensions must be greater than zero (you provided $width x $height)", null);
+              return;
+          }
+          Log.i("flutter_filament", "Creating Surface Texture of size ${width}x${height}");
+          
+          _surfaceTextureEntry = flutterPluginBinding.textureRegistry.createSurfaceTexture()
+          _surfaceTexture = _surfaceTextureEntry!!.surfaceTexture();
+          _surfaceTexture!!.setDefaultBufferSize(width.toInt(), height.toInt())
+
+          _surface = Surface(_surfaceTexture)
+
+          if(!_surface!!.isValid) {
+              Log.e("ERR", "ERR", null)
+          }
+
+          val nativeWindow = _lib.get_native_window_from_surface(_surface!! as Object, JNIEnv.CURRENT)
+        
+          val resultList = listOf(_surfaceTextureEntry!!.id(), Pointer.nativeValue(nativeWindow), null, null )
+          
+          result.success(resultList)
+        }
+        "getResourceLoaderWrapper" -> { 
+          val resourceLoader = _lib.make_resource_loader(loadResourceWrapper, freeResourceWrapper, Pointer(0))
+          result.success(Pointer.nativeValue(resourceLoader))
+        }
+        "getRenderCallback" -> {
+          val renderCallbackFnPointer = _lib.make_render_callback_fn_pointer(RenderCallbackImpl(this))
+          result.success(listOf(Pointer.nativeValue(renderCallbackFnPointer), 0))
+        }
+        "destroyTexture" -> {
+          _surface!!.release();
+          _surfaceTextureEntry!!.release();
+          _surface = null
+          _surfaceTextureEntry = null
+          result.success(true)
+        }
+        else -> {
+          result.notImplemented()
+        }
+    }
+}
+
+  override fun onDetachedFromEngine(@NonNull binding: FlutterPlugin.FlutterPluginBinding) {
+    channel.setMethodCallHandler(null)
+  }
+
+  
+  override fun onReattachedToActivityForConfigChanges(binding: ActivityPluginBinding) {
+    onAttachedToActivity(binding)
+  }
+
+  override fun onDetachedFromActivityForConfigChanges() {
+    onDetachedFromActivity()
+  }
+
+  override fun onDetachedFromActivity() {
+    lifecycle = null
+  }
+
+}

flutter_filament_federated/flutter_filament/android/src/main/kotlin/app/polyvox/filament/HotReloadPathHelper.kt

@@ -0,0 +1,28 @@
+import java.io.*
+import java.nio.file.FileSystems
+import java.nio.file.Files
+import java.nio.file.Path
+import kotlin.io.path.absolutePathString
+import kotlin.io.path.listDirectoryEntries
+import android.util.Log
+
+
+class HotReloadPathHelper {
+    companion object {
+        fun getAssetPath(path: String, packageName: String): String? {
+            val packagePath = "/data/user/0/${packageName}/code_cache/"
+            Log.v("flutter_filament", "Looking for hot reloaded asset ${path} under package path ${packagePath}")
+            val files = File(packagePath).walkBottomUp().filter {
+              it.path.endsWith(path)
+            }.sortedBy {
+              it.lastModified()
+            }.toList()
+            if(files.size > 0) {
+              Log.v("flutter_filament", "Using hot reloaded asset at ${files.last().path}")
+              return files.last().path;
+            }
+            Log.v("flutter_filament", "No hot reloaded asset found.")
+            return null;
+          }
+    }
+}