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#import
#import
@interface NDIWrapper : NSObject
+ (void)initialize;
- (void)start:(NSString *)name;
- (void)stop;
- (void)send:(CMSampleBufferRef)sampleBuffer metadata:(NSString *)metadata;
@end
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- (void)send:(CMSampleBufferRef)sampleBuffer metadata:(NSString *)metadata {
if (!my_ndi_send) {
NSLog(@"ERROR: NDI instance is nil");
return;
}
CVImageBufferRef imageBuffer = CMSampleBufferGetImageBuffer(sampleBuffer);
NDIlib_video_frame_v2_t video_frame;
video_frame.frame_rate_N = 30000;
video_frame.frame_rate_D = 1000;
video_frame.xres = (int)CVPixelBufferGetWidth(imageBuffer);
video_frame.yres = (int)CVPixelBufferGetHeight(imageBuffer);
video_frame.FourCC = NDIlib_FourCC_type_BGRA;
video_frame.frame_format_type = NDIlib_frame_format_type_progressive;
video_frame.picture_aspect_ratio = video_frame.yres / video_frame.xres;
video_frame.line_stride_in_bytes = video_frame.xres * 4;
video_frame.p_metadata = metadata.UTF8String;
CVPixelBufferLockBaseAddress(imageBuffer, kCVPixelBufferLock_ReadOnly);
video_frame.p_data = CVPixelBufferGetBaseAddress(imageBuffer);
CVPixelBufferUnlockBaseAddress(imageBuffer, kCVPixelBufferLock_ReadOnly);
NDIlib_send_send_video_async_v2(my_ndi_send, &video_frame);
}
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- (void)send:(CMSampleBufferRef)sampleBuffer metadata:(NSString *)metadata {
if (!my_ndi_send) {
NSLog(@"ERROR: NDI instance is nil");
return;
}
CVImageBufferRef imageBuffer = CMSampleBufferGetImageBuffer(sampleBuffer);
NDIlib_video_frame_v2_t video_frame;
video_frame.frame_rate_N = 30000;
video_frame.frame_rate_D = 1000;
video_frame.xres = (int)CVPixelBufferGetWidth(imageBuffer);
video_frame.yres = (int)CVPixelBufferGetHeight(imageBuffer);
video_frame.FourCC = NDIlib_FourCC_type_BGRA;
video_frame.frame_format_type = NDIlib_frame_format_type_progressive;
video_frame.picture_aspect_ratio = video_frame.yres / video_frame.xres;
video_frame.line_stride_in_bytes = video_frame.xres * 4;
video_frame.p_metadata = metadata.UTF8String;
CVPixelBufferLockBaseAddress(imageBuffer, kCVPixelBufferLock_ReadOnly);
video_frame.p_data = CVPixelBufferGetBaseAddress(imageBuffer);
CVPixelBufferUnlockBaseAddress(imageBuffer, kCVPixelBufferLock_ReadOnly);
NDIlib_send_send_video_async_v2(my_ndi_send, &video_frame);
}
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- (void)send:(CMSampleBufferRef)sampleBuffer metadata:(NSString *)metadata {
if (!my_ndi_send) {
NSLog(@"ERROR: NDI instance is nil");
return;
}
CVImageBufferRef imageBuffer = CMSampleBufferGetImageBuffer(sampleBuffer);
NDIlib_video_frame_v2_t video_frame;
video_frame.frame_rate_N = 30000;
video_frame.frame_rate_D = 1000;
video_frame.xres = (int)CVPixelBufferGetWidth(imageBuffer);
video_frame.yres = (int)CVPixelBufferGetHeight(imageBuffer);
video_frame.FourCC = NDIlib_FourCC_type_BGRA;
video_frame.frame_format_type = NDIlib_frame_format_type_progressive;
video_frame.picture_aspect_ratio = video_frame.yres / video_frame.xres;
video_frame.line_stride_in_bytes = video_frame.xres * 4;
video_frame.p_metadata = metadata.UTF8String;
CVPixelBufferLockBaseAddress(imageBuffer, kCVPixelBufferLock_ReadOnly);
video_frame.p_data = CVPixelBufferGetBaseAddress(imageBuffer);
CVPixelBufferUnlockBaseAddress(imageBuffer, kCVPixelBufferLock_ReadOnly);
NDIlib_send_send_video_async_v2(my_ndi_send, &video_frame);
}
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- (void)send:(CMSampleBufferRef)sampleBuffer metadata:(NSString *)metadata {
if (!my_ndi_send) {
NSLog(@"ERROR: NDI instance is nil");
return;
}
CVImageBufferRef imageBuffer = CMSampleBufferGetImageBuffer(sampleBuffer);
NDIlib_video_frame_v2_t video_frame;
video_frame.frame_rate_N = 30000;
video_frame.frame_rate_D = 1000;
video_frame.xres = (int)CVPixelBufferGetWidth(imageBuffer);
video_frame.yres = (int)CVPixelBufferGetHeight(imageBuffer);
video_frame.FourCC = NDIlib_FourCC_type_BGRA;
video_frame.frame_format_type = NDIlib_frame_format_type_progressive;
video_frame.picture_aspect_ratio = video_frame.yres / video_frame.xres;
video_frame.line_stride_in_bytes = video_frame.xres * 4;
video_frame.p_metadata = metadata.UTF8String;
CVPixelBufferLockBaseAddress(imageBuffer, kCVPixelBufferLock_ReadOnly);
video_frame.p_data = CVPixelBufferGetBaseAddress(imageBuffer);
CVPixelBufferUnlockBaseAddress(imageBuffer, kCVPixelBufferLock_ReadOnly);
NDIlib_send_send_video_async_v2(my_ndi_send, &video_frame);
}
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class ViewController: UIViewController {
private var ndiWrapper: NDIWrapper?
override func viewDidLoad() {
super.viewDidLoad()
ndiWrapper = NDIWrapper()
...
}
}
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class ViewController: UIViewController {
private var ndiWrapper: NDIWrapper?
...
override func viewDidLoad() {
super.viewDidLoad()
ndiWrapper = NDIWrapper()
...
}
}
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func captureOutput(_ output: AVCaptureOutput,
didOutput sampleBuffer: CMSampleBuffer, from connection: AVCaptureConnection) {
guard let ndiWrapper = self.ndiWrapper, isSending else { return }
ndiWrapper.send(sampleBuffer, metadata: makeMetadata().serialize())
}
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func captureOutput(_ output: AVCaptureOutput,
didOutput sampleBuffer: CMSampleBuffer, from connection: AVCaptureConnection) {
guard let ndiWrapper = self.ndiWrapper, isSending else { return }
ndiWrapper.send(sampleBuffer, metadata: makeMetadata().serialize())
}
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public struct Metadata {
public let cameraPosition: simd_float3
public let cameraRotation: CMQuaternion
public let projectionMatrix: matrix_float4x4
public let depthRange: simd_float2
public let inputState: InputState
}
public struct InputState {
public let buttons: [UInt8] // 2
public let toggles: [UInt8] // 2
public let knobs: [UInt8] // 32
}
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// Debug
func makeMetadata() -> Metadata {
var knobs = Array(repeating: 0, count: 32)
knobs[1] = UInt8(slider.value)
let inputState = InputState(buttons: [0, 0],
toggles: [0, 0],
knobs: knobs)
let metadata = Metadata(cameraPosition: simd_float3(0, 0, 0),
cameraRotation: CMQuaternion(x: 0, y: 0, z: 0, w: 0),
projectionMatrix: matrix_float4x4(SIMD4(0, 0, 0, 0),
SIMD4(0, 0, 0, 0),
SIMD4(0, 0, 0, 0),
SIMD4(0, 0, 0, 0)),
depthRange: simd_float2(0, 1),
inputState: inputState)
return metadata
}
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// Debug
func makeMetadata() -> Metadata {
var knobs = Array(repeating: 0, count: 32)
knobs[1] = UInt8(slider.value)
let inputState = InputState(buttons: [0, 0],
toggles: [0, 0],
knobs: knobs)
let metadata = Metadata(cameraPosition: simd_float3(0, 0, 0),
cameraRotation: CMQuaternion(x: 0, y: 0, z: 0, w: 0),
projectionMatrix: matrix_float4x4(SIMD4(0, 0, 0, 0),
SIMD4(0, 0, 0, 0),
SIMD4(0, 0, 0, 0),
SIMD4(0, 0, 0, 0)),
depthRange: simd_float2(0, 1),
inputState: inputState)
return metadata
}
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override func viewWillAppear(_ animated: Bool) {
super.viewWillAppear(animated)
let configuration = ARWorldTrackingConfiguration()
configuration.frameSemantics = .personSegmentationWithDepth
session.run(configuration)
}
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override func viewWillAppear(_ animated: Bool) {
super.viewWillAppear(animated)
let configuration = ARWorldTrackingConfiguration()
configuration.frameSemantics = .personSegmentationWithDepth
session.run(configuration)
}
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class Renderer {
let session: ARSession
let matteGenerator: ARMatteGenerator
let device: MTLDevice
let inFlightSemaphore = DispatchSemaphore(value: kMaxBuffersInFlight)
var renderDestination: RenderDestinationProvider
...
}
func updateMatteTextures(commandBuffer: MTLCommandBuffer) {
guard let currentFrame = session.currentFrame else {
return
}
alphaTexture = matteGenerator.generateMatte(from: currentFrame, commandBuffer: commandBuffer)
dilatedDepthTexture = matteGenerator.generateDilatedDepth(from: currentFrame, commandBuffer: commandBuffer)
}
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void UpdateMetadata()
{
// Deserialization
var xml = _ndiReceiver.metadata;
if (xml == null || xml.Length == 0) return;
_metadata = Metadata.Deserialize(xml);
// Input state update with the metadata
Singletons.InputHandle.InputState = _metadata.InputState;
}
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void UpdateMetadata()
{
// Deserialization
var xml = _ndiReceiver.metadata;
if (xml == null || xml.Length == 0) return;
_metadata = Metadata.Deserialize(xml);
// Input state update with the metadata
Singletons.InputHandle.InputState = _metadata.InputState;
}
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void UpdateMetadata()
{
// Deserialization
var xml = _ndiReceiver.metadata;
if (xml == null || xml.Length == 0) return;
_metadata = Metadata.Deserialize(xml);
// Input state update with the metadata
Singletons.InputHandle.InputState = _metadata.InputState;
}
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