move flutter_filament plugin to federated structure
This commit is contained in:
Nick Fisher
@@ -0,0 +1,102 @@
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import Foundation
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import GLKit
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@objc public class DartFilamentTexture : NSObject {
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public var pixelBuffer: CVPixelBuffer?
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var pixelBufferAttrs = [
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kCVPixelBufferPixelFormatTypeKey: NSNumber(value: kCVPixelFormatType_32ABGR ),
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kCVPixelBufferIOSurfacePropertiesKey: [:] as CFDictionary
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] as [CFString : Any] as CFDictionary
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@objc public var cvMetalTextureCache:CVMetalTextureCache?
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@objc public var cvMetalTexture:CVMetalTexture?
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@objc public var metalTexture:MTLTexture?
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@objc public var metalDevice:MTLDevice?
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@objc public var metalTextureAddress:Int = -1
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@objc override public init() {
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}
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@objc public init(width:Int64, height:Int64) {
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self.metalDevice = MTLCreateSystemDefaultDevice()!
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// create pixel buffer
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if(CVPixelBufferCreate(kCFAllocatorDefault, Int(width), Int(height),
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kCVPixelFormatType_32BGRA, pixelBufferAttrs, &pixelBuffer) != kCVReturnSuccess) {
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print("Error allocating pixel buffer")
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metalTextureAddress = -1;
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return
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}
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var cvret = CVMetalTextureCacheCreate(
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kCFAllocatorDefault,
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nil,
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metalDevice!,
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nil,
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&cvMetalTextureCache);
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if(cvret != 0) {
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print("Error creating Metal texture cache")
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metalTextureAddress = -1
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return
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}
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cvret = CVMetalTextureCacheCreateTextureFromImage(
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kCFAllocatorDefault,
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cvMetalTextureCache!,
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pixelBuffer!, nil,
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MTLPixelFormat.bgra8Unorm,
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Int(width), Int(height),
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0,
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&cvMetalTexture)
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if(cvret != 0) {
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print("Error creating texture from image")
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metalTextureAddress = -1
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return
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}
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metalTexture = CVMetalTextureGetTexture(cvMetalTexture!)
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let metalTexturePtr = Unmanaged.passUnretained(metalTexture!).toOpaque()
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metalTextureAddress = Int(bitPattern:metalTexturePtr)
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print("Created metal texture @ \(metalTextureAddress)")
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// CVPixelBufferLockBaseAddress(pixelBuffer!, CVPixelBufferLockFlags(rawValue: 0))
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// let bufferWidth = Int(CVPixelBufferGetWidth(pixelBuffer!))
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// let bufferHeight = Int(CVPixelBufferGetHeight(pixelBuffer!))
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// let bytesPerRow = CVPixelBufferGetBytesPerRow(pixelBuffer!)
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// guard let baseAddress = CVPixelBufferGetBaseAddress(pixelBuffer!) else {
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// return
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// }
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// for row in 0..<bufferHeight {
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// var pixel = baseAddress + row * bytesPerRow
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// for col in 0..<bufferWidth {
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// let blue = pixel
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// blue.storeBytes(of: 255, as: UInt8.self)
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// let red = pixel + 1
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// red.storeBytes(of: 0, as: UInt8.self)
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// let green = pixel + 2
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// green.storeBytes(of: 0, as: UInt8.self)
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// let alpha = pixel + 3
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// alpha.storeBytes(of: 255, as: UInt8.self)
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// pixel += 4;
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// }
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// }
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// CVPixelBufferUnlockBaseAddress(pixelBuffer!, CVPixelBufferLockFlags(rawValue: 0))
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}
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@objc public func destroyTexture() {
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metalTexture = nil
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}
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}
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@@ -0,0 +1,30 @@
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import Foundation
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import GLKit
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import FlutterMacOS
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public class FlutterFilamentTexture : DartFilamentTexture, FlutterTexture {
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var flutterTextureId: Int64 = -1
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var registry: FlutterTextureRegistry
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init(registry:FlutterTextureRegistry, width:Int64, height:Int64) {
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self.registry = registry
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super.init(width:width, height:height)
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self.flutterTextureId = registry.register(self)
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}
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public func copyPixelBuffer() -> Unmanaged<CVPixelBuffer>? {
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return Unmanaged.passRetained(pixelBuffer!);
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}
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public func onTextureUnregistered(_ texture:FlutterTexture) {
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print("Texture unregistered")
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}
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public func destroy() {
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self.registry.unregisterTexture(self.flutterTextureId)
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self.destroyTexture()
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}
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}
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@@ -0,0 +1,115 @@
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import FlutterMacOS
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import GLKit
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public class SwiftFlutterFilamentPlugin: NSObject, FlutterPlugin {
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var registrar : FlutterPluginRegistrar
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var registry: FlutterTextureRegistry
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var texture: FlutterFilamentTexture?
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var createdAt = Date()
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var resources:[UInt32:NSData] = [:]
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static var messenger : FlutterBinaryMessenger? = nil;
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var loadResource : @convention(c) (UnsafePointer<Int8>?, UnsafeMutableRawPointer?) -> ResourceBuffer = { uri, resourcesPtr in
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let instance:SwiftFlutterFilamentPlugin = Unmanaged<SwiftFlutterFilamentPlugin>.fromOpaque(resourcesPtr!).takeUnretainedValue()
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var uriString = String(cString:uri!)
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var path:String? = nil
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print("Received request to load \(uriString)")
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if(uriString.hasPrefix("file://")) {
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path = String(uriString.dropFirst(7))
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} else {
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if(uriString.hasPrefix("asset://")) {
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uriString = String(uriString.dropFirst(8))
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}
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let bundle = Bundle.init(identifier: "io.flutter.flutter.app")!
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path = bundle.path(forResource:uriString, ofType: nil, inDirectory: "flutter_assets")
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}
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if(path != nil) {
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do {
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let data = try Data(contentsOf: URL(fileURLWithPath:path!))
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let nsData = data as NSData
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let resId = UInt32(instance.resources.count)
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instance.resources[resId] = nsData
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let length = nsData.length
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print("Resolved asset to file of length \(Int32(length)) at path \(path!)")
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return ResourceBuffer(data:nsData.bytes, size:Int32(UInt32(nsData.length)), id:Int32(UInt32(resId)))
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} catch {
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print("ERROR LOADING RESOURCE")
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}
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}
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return ResourceBuffer()
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}
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var freeResource : @convention(c) (ResourceBuffer,UnsafeMutableRawPointer?) -> () = { rbuf, resourcesPtr in
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let instance:SwiftFlutterFilamentPlugin = Unmanaged<SwiftFlutterFilamentPlugin>.fromOpaque(resourcesPtr!).takeUnretainedValue()
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instance.resources.removeValue(forKey:UInt32(rbuf.id))
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}
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var markTextureFrameAvailable : @convention(c) (UnsafeMutableRawPointer?) -> () = { instancePtr in
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let instance:SwiftFlutterFilamentPlugin = Unmanaged<SwiftFlutterFilamentPlugin>.fromOpaque(instancePtr!).takeUnretainedValue()
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if(instance.texture != nil) {
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instance.registry.textureFrameAvailable(instance.texture!.flutterTextureId)
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}
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}
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public static func register(with registrar: FlutterPluginRegistrar) {
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let _messenger = registrar.messenger;
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messenger = _messenger;
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let channel = FlutterMethodChannel(name: "app.polyvox.filament/event", binaryMessenger: _messenger)
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let instance = SwiftFlutterFilamentPlugin(textureRegistry: registrar.textures, registrar:registrar)
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registrar.addMethodCallDelegate(instance, channel: channel)
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}
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init(textureRegistry: FlutterTextureRegistry, registrar:FlutterPluginRegistrar) {
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self.registry = textureRegistry;
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self.registrar = registrar
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}
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public func handle(_ call: FlutterMethodCall, result: @escaping FlutterResult) {
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let methodName = call.method;
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switch methodName {
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case "getResourceLoaderWrapper":
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var resourceLoaderWrapper = make_resource_loader(loadResource, freeResource, Unmanaged.passUnretained(self).toOpaque())
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result(unsafeBitCast(resourceLoaderWrapper, to:Int64.self))
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case "getRenderCallback":
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let renderCallback = markTextureFrameAvailable
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let resultArray:[Any] = [
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unsafeBitCast(renderCallback, to:Int64.self), unsafeBitCast(Unmanaged.passUnretained(self), to:UInt64.self)]
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result(resultArray)
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case "getDriverPlatform":
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result(nil)
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case "getSharedContext":
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result(nil)
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case "createTexture":
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let args = call.arguments as! [Any]
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let width = args[0] as! Int64
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let height = args[1] as! Int64
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self.texture = FlutterFilamentTexture(registry: registry, width: width, height: height)
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if(self.texture?.metalTextureAddress == -1) {
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result(nil)
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} else {
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result([self.texture!.flutterTextureId as Any, self.texture?.metalTextureAddress, nil])
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}
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case "destroyTexture":
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self.texture?.destroy()
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self.texture = nil
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result(true)
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default:
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result(FlutterMethodNotImplemented)
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}
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}
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}
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@@ -0,0 +1,28 @@
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#
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# To learn more about a Podspec see http://guides.cocoapods.org/syntax/podspec.html.
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# Run `pod lib lint flutter_filament.podspec` to validate before publishing.
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#
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Pod::Spec.new do |s|
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s.name = 'flutter_filament'
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s.version = '0.0.1'
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s.summary = 'A new Flutter plugin project.'
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s.description = <<-DESC
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A new Flutter plugin project.
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DESC
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s.homepage = 'http://example.com'
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s.license = { :file => '../LICENSE' }
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s.author = { 'Your Company' => 'email@example.com' }
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s.source = { :path => '.' }
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s.source_files = 'Classes/*', 'include/ResourceBuffer.hpp','include/SwiftFlutterFilamentPlugin-Bridging-Header.h'
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s.public_header_files = 'include/SwiftFlutterFilamentPlugin-Bridging-Header.h', 'include/ResourceBuffer.hpp'
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s.dependency 'FlutterMacOS'
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s.platform = :osx, '13'
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s.pod_target_xcconfig = {
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'DEFINES_MODULE' => 'YES',
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'OTHER_CFLAGS' => '"-fvisibility=default" "$(inherited)"',
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}
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s.swift_version = '5.0'
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end
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@@ -0,0 +1,117 @@
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#ifndef RESOURCE_BUFFER_H
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#define RESOURCE_BUFFER_H
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#include <stdint.h>
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#include <stdlib.h>
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//
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// A ResourceBuffer is a unified interface for working with
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// binary assets across various platforms.
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// This is simply:
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// 1) a pointer to some data
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// 2) the length of the data
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// 3) an ID that can be passed back to the native platform to release the underlying asset when needed.
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//
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struct ResourceBuffer
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{
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const void *const data;
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const int32_t size;
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const int32_t id;
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};
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typedef struct ResourceBuffer ResourceBuffer;
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typedef ResourceBuffer (*LoadFilamentResource)(const char *uri);
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typedef ResourceBuffer (*LoadFilamentResourceFromOwner)(const char *const, void *const owner);
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typedef void (*FreeFilamentResource)(ResourceBuffer);
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typedef void (*FreeFilamentResourceFromOwner)(ResourceBuffer, void *const owner);
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struct ResourceLoaderWrapper
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{
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LoadFilamentResource loadResource;
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FreeFilamentResource freeResource;
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LoadFilamentResourceFromOwner loadFromOwner;
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FreeFilamentResourceFromOwner freeFromOwner;
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void *owner;
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};
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typedef struct ResourceLoaderWrapper ResourceLoaderWrapper;
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#if defined(__cplusplus)
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namespace flutter_filament {
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// struct ResourceBufferImpl : public ResourceBuffer
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// {
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// ResourceBufferImpl(const void *const mData, const int32_t mSize, const int32_t mId)
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// {
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// data = mData;
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// size = mSize;
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// id = mId;
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// };
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// ResourceBufferImpl(const ResourceBufferImpl &rb)
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// {
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// (void *)data = rb.data;
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// size = rb.size;
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// id = rb.id;
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// };
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// ResourceBufferImpl(const ResourceBufferImpl &&rb) noexcept
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// {
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// data = rb.data;
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// size = rb.size;
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// id = rb.id;
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// };
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// ResourceBufferImpl &operator=(const ResourceBufferImpl &other) = delete;
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// };
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struct ResourceLoaderWrapperImpl : public ResourceLoaderWrapper
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{
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ResourceLoaderWrapperImpl(LoadFilamentResource loader, FreeFilamentResource freeResource)
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{
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loadFromOwner = nullptr;
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freeFromOwner = nullptr;
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loadResource = loader;
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freeResource = freeResource;
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owner = nullptr;
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}
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ResourceLoaderWrapperImpl(LoadFilamentResourceFromOwner loader, FreeFilamentResourceFromOwner freeResource, void * owner)
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{
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loadResource = nullptr;
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freeResource = nullptr;
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loadFromOwner = loader;
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freeFromOwner = freeResource;
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owner = owner;
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}
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ResourceBuffer load(const char *uri) const
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{
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if (loadFromOwner)
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{
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auto rb = loadFromOwner(uri, owner);
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return rb;
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}
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auto rb = loadResource(uri);
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return rb;
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}
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void free(ResourceBuffer rb) const
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{
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if (freeFromOwner)
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{
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freeFromOwner(rb, owner);
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}
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else
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{
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freeResource(rb);
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}
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}
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};
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}
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#endif
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#endif
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@@ -0,0 +1,17 @@
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#ifndef SwiftFlutterFilamentPlugin_Bridging_Header_h
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#define SwiftFlutterFilamentPlugin_Bridging_Header_h
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#include <stdint.h>
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#include "ResourceBuffer.hpp"
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ResourceLoaderWrapper *make_resource_loader(LoadFilamentResourceFromOwner loadFn, FreeFilamentResourceFromOwner freeFn, void *const owner)
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{
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ResourceLoaderWrapper *rlw = (ResourceLoaderWrapper *)malloc(sizeof(ResourceLoaderWrapper));
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rlw->loadFromOwner = loadFn;
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rlw->freeFromOwner = freeFn;
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rlw->owner = owner;
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return rlw;
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}
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#endif
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