feat(iOS): screensharing extension swift implementation

This commit is contained in:
Alex Bumbu 2021-04-07 11:34:59 +03:00 committed by Saúl Ibarra Corretgé
parent 1898e4a768
commit 9bffe149d3
15 changed files with 617 additions and 704 deletions

View File

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@ -0,0 +1,30 @@
import Foundation
@propertyWrapper
struct Atomic<Value> {
private var value: Value
private let lock = NSLock()
init(wrappedValue value: Value) {
self.value = value
}
var wrappedValue: Value {
get { return load() }
set { store(newValue: newValue) }
}
func load() -> Value {
lock.lock()
defer { lock.unlock() }
return value
}
mutating func store(newValue: Value) {
lock.lock()
defer { lock.unlock() }
value = newValue
}
}

View File

@ -1,31 +0,0 @@
/*
* Copyright @ 2021-present 8x8, Inc.
*
* 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.
*/
#import <Foundation/Foundation.h>
NS_ASSUME_NONNULL_BEGIN
extern NSNotificationName const kBroadcastStartedNotification;
extern NSNotificationName const kBroadcastStoppedNotification;
@interface DarwinNotificationCenter: NSObject
+ (instancetype)sharedInstance;
- (void)postNotificationWithName:(NSNotificationName)name;
@end
NS_ASSUME_NONNULL_END

View File

@ -1,50 +0,0 @@
/*
* Copyright @ 2021-present 8x8, Inc.
*
* 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.
*/
#import "DarwinNotificationCenter.h"
NSNotificationName const kBroadcastStartedNotification = @"iOS_BroadcastStarted";
NSNotificationName const kBroadcastStoppedNotification = @"iOS_BroadcastStopped";
@implementation DarwinNotificationCenter {
CFNotificationCenterRef _notificationCenter;
}
+ (instancetype)sharedInstance {
static DarwinNotificationCenter *sharedInstance = nil;
static dispatch_once_t onceToken;
dispatch_once(&onceToken, ^{
sharedInstance = [[self alloc] init];
});
return sharedInstance;
}
- (instancetype)init {
self = [super init];
if (self) {
_notificationCenter = CFNotificationCenterGetDarwinNotifyCenter();
}
return self;
}
- (void)postNotificationWithName:(NSString*)name {
CFNotificationCenterPostNotification(_notificationCenter, (__bridge CFStringRef)name, NULL, NULL, true);
}
@end

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@ -0,0 +1,37 @@
/*
* Copyright @ 2021-present 8x8, Inc.
*
* 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.
*/
import Foundation
enum DarwinNotification: String {
case broadcastStarted = "iOS_BroadcastStarted"
case broadcastStopped = "iOS_BroadcastStopped"
}
class DarwinNotificationCenter {
static var shared = DarwinNotificationCenter()
private var notificationCenter: CFNotificationCenter
init() {
notificationCenter = CFNotificationCenterGetDarwinNotifyCenter()
}
func postNotification(_ name: DarwinNotification) {
CFNotificationCenterPostNotification(notificationCenter, CFNotificationName(rawValue: name.rawValue as CFString), nil, nil, true)
}
}

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@ -25,7 +25,7 @@
<key>NSExtensionPointIdentifier</key>
<string>com.apple.broadcast-services-upload</string>
<key>NSExtensionPrincipalClass</key>
<string>SampleHandler</string>
<string>$(PRODUCT_MODULE_NAME).SampleHandler</string>
<key>RPBroadcastProcessMode</key>
<string>RPBroadcastProcessModeSampleBuffer</string>
</dict>

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@ -1,21 +0,0 @@
/*
* Copyright @ 2021-present 8x8, Inc.
*
* 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.
*/
#import <ReplayKit/ReplayKit.h>
@interface SampleHandler : RPBroadcastSampleHandler
@end

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@ -1,123 +0,0 @@
/*
* Copyright @ 2021-present 8x8, Inc.
*
* 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.
*/
#import "SampleHandler.h"
#import "SocketConnection.h"
#import "SampleUploader.h"
#import "DarwinNotificationCenter.h"
@interface SampleHandler ()
@property (nonatomic, retain) SocketConnection *clientConnection;
@property (nonatomic, retain) SampleUploader *uploader;
@end
@implementation SampleHandler
- (instancetype)init {
self = [super init];
if (self) {
self.clientConnection = [[SocketConnection alloc] initWithFilePath:self.socketFilePath];
[self setupConnection];
self.uploader = [[SampleUploader alloc] initWithConnection:self.clientConnection];
}
return self;
}
- (void)broadcastStartedWithSetupInfo:(NSDictionary<NSString *,NSObject *> *)setupInfo {
// User has requested to start the broadcast. Setup info from the UI extension can be supplied but optional.
NSLog(@"broadcast started");
[[DarwinNotificationCenter sharedInstance] postNotificationWithName:kBroadcastStartedNotification];
[self openConnection];
}
- (void)broadcastPaused {
// User has requested to pause the broadcast. Samples will stop being delivered.
}
- (void)broadcastResumed {
// User has requested to resume the broadcast. Samples delivery will resume.
}
- (void)broadcastFinished {
// User has requested to finish the broadcast.
[[DarwinNotificationCenter sharedInstance] postNotificationWithName:kBroadcastStoppedNotification];
[self.clientConnection close];
}
- (void)processSampleBuffer:(CMSampleBufferRef)sampleBuffer withType:(RPSampleBufferType)sampleBufferType {
static NSUInteger frameCount = 0;
switch (sampleBufferType) {
case RPSampleBufferTypeVideo:
// adjust frame rate by using every third frame
if (++frameCount%3 == 0 && self.uploader.isReady) {
[self.uploader sendSample:sampleBuffer];
}
break;
default:
break;
}
}
// MARK: Private Methods
- (NSString *)socketFilePath {
// the appGroupIdentifier must match the value provided in the app's info.plist for the RTCAppGroupIdentifier key
NSString *appGroupIdentifier = @"group.org.jitsi.meet.appgroup";
NSURL *sharedContainer = [[NSFileManager defaultManager] containerURLForSecurityApplicationGroupIdentifier:appGroupIdentifier];
NSString *socketFilePath = [[sharedContainer URLByAppendingPathComponent:@"rtc_SSFD"] path];
return socketFilePath;
}
- (void)setupConnection {
__weak __typeof(self) weakSelf = self;
self.clientConnection.didClose = ^(NSError *error) {
NSLog(@"client connection did close: %@", error);
if (error) {
[weakSelf finishBroadcastWithError:error];
}
else {
NSInteger JMScreenSharingStopped = 10001;
NSError *customError = [NSError errorWithDomain:RPRecordingErrorDomain
code:JMScreenSharingStopped
userInfo:@{NSLocalizedDescriptionKey: @"Screen sharing stopped"}];
[weakSelf finishBroadcastWithError:customError];
}
};
}
- (void)openConnection {
dispatch_queue_t queue = dispatch_queue_create("org.jitsi.meet.broadcast.connectTimer", 0);
dispatch_source_t timer = dispatch_source_create(DISPATCH_SOURCE_TYPE_TIMER, 0, 0, queue);
dispatch_source_set_timer(timer, dispatch_walltime(NULL, 0), 0.1 * NSEC_PER_SEC, 0.1 * NSEC_PER_SEC);
dispatch_source_set_event_handler(timer, ^{
BOOL success = [self.clientConnection open];
if (success) {
dispatch_source_cancel(timer);
}
});
dispatch_resume(timer);
}
@end

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@ -0,0 +1,117 @@
/*
* Copyright @ 2021-present 8x8, Inc.
*
* 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.
*/
import ReplayKit
import JitsiMeetSDK
private enum Constants {
// the App Group ID value that the app and the broadcast extension targets are setup with. It differs for each app.
static let appGroupIdentifier = "group.org.jitsi.meet.appgroup"
}
class SampleHandler: RPBroadcastSampleHandler {
private var clientConnection: SocketConnection?
private var uploader: SampleUploader?
private var frameCount: Int = 0
var socketFilePath: String {
let sharedContainer = FileManager.default.containerURL(forSecurityApplicationGroupIdentifier: Constants.appGroupIdentifier)
return sharedContainer?.appendingPathComponent("rtc_SSFD").path ?? ""
}
override init() {
super.init()
if let connection = SocketConnection(filePath: socketFilePath) {
clientConnection = connection
setupConnection()
uploader = SampleUploader(connection: connection)
}
}
override func broadcastStarted(withSetupInfo setupInfo: [String: NSObject]?) {
// User has requested to start the broadcast. Setup info from the UI extension can be supplied but optional.
print("broadcast started")
frameCount = 0
DarwinNotificationCenter.shared.postNotification(.broadcastStarted)
openConnection()
}
override func broadcastPaused() {
// User has requested to pause the broadcast. Samples will stop being delivered.
}
override func broadcastResumed() {
// User has requested to resume the broadcast. Samples delivery will resume.
}
override func broadcastFinished() {
// User has requested to finish the broadcast.
DarwinNotificationCenter.shared.postNotification(.broadcastStopped)
clientConnection?.close()
}
override func processSampleBuffer(_ sampleBuffer: CMSampleBuffer, with sampleBufferType: RPSampleBufferType) {
switch sampleBufferType {
case RPSampleBufferType.video:
// very simple mechanism for adjusting frame rate by using every third frame
frameCount += 1
if frameCount % 3 == 0 {
uploader?.send(sample: sampleBuffer)
}
default:
break
}
}
}
private extension SampleHandler {
func setupConnection() {
clientConnection?.didClose = { [weak self] error in
print("client connection did close \(String(describing: error))")
if let error = error {
self?.finishBroadcastWithError(error)
} else {
// the displayed failure message is more user friendly when using NSError instead of Error
let JMScreenSharingStopped = 10001
let customError = NSError(domain: RPRecordingErrorDomain, code: JMScreenSharingStopped, userInfo: [NSLocalizedDescriptionKey: "Screen sharing stopped"])
self?.finishBroadcastWithError(customError)
}
}
}
func openConnection() {
let queue = DispatchQueue(label: "broadcast.connectTimer")
let timer = DispatchSource.makeTimerSource(queue: queue)
timer.schedule(deadline: .now(), repeating: .milliseconds(100), leeway: .milliseconds(500))
timer.setEventHandler { [weak self] in
guard self?.clientConnection?.open() == true else {
return
}
timer.cancel()
}
timer.resume()
}
}

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@ -1,33 +0,0 @@
/*
* Copyright @ 2021-present 8x8, Inc.
*
* 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.
*/
#import <Foundation/Foundation.h>
#import <ReplayKit/ReplayKit.h>
NS_ASSUME_NONNULL_BEGIN
@class SocketConnection;
@interface SampleUploader : NSObject
@property (nonatomic, assign, readonly) BOOL isReady;
- (instancetype)initWithConnection:(SocketConnection *)connection;
- (void)sendSample:(CMSampleBufferRef)sampleBuffer;
@end
NS_ASSUME_NONNULL_END

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@ -1,157 +0,0 @@
/*
* Copyright @ 2021-present 8x8, Inc.
*
* 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.
*/
#import <MessageUI/MessageUI.h>
#import <ReplayKit/ReplayKit.h>
#import "SampleUploader.h"
#import "SocketConnection.h"
static const NSInteger kBufferMaxLenght = 10 * 1024;
@interface SampleUploader ()
@property (nonatomic, assign) BOOL isReady;
@property (nonatomic, strong) dispatch_queue_t serialQueue;
@property (nonatomic, strong) SocketConnection *connection;
@property (nonatomic, strong) CIContext *imageContext;
@property (nonatomic, strong) NSData *dataToSend;
@property (nonatomic, assign) NSUInteger byteIndex;
@end
@implementation SampleUploader
- (instancetype)initWithConnection:(SocketConnection *)connection {
self = [super init];
if (self) {
self.serialQueue = dispatch_queue_create("org.jitsi.meet.broadcast.sampleUploader", DISPATCH_QUEUE_SERIAL);
self.connection = connection;
[self setupConnection];
self.imageContext = [[CIContext alloc] initWithOptions:nil];
self.isReady = false;
}
return self;
}
- (void)sendSample:(CMSampleBufferRef)sampleBuffer {
self.isReady = false;
self.dataToSend = [self prepareSample:sampleBuffer];
self.byteIndex = 0;
dispatch_async(self.serialQueue, ^{
[self sendData];
});
}
// MARK: Private Methods
- (void)setupConnection {
__weak __typeof(self) weakSelf = self;
self.connection.didOpen = ^{
weakSelf.isReady = true;
};
self.connection.streamHasSpaceAvailable = ^{
dispatch_async(weakSelf.serialQueue, ^{
weakSelf.isReady = ![weakSelf sendData];
});
};
}
/**
This function downscales and converts to jpeg the provided sample buffer, then wraps the resulted image data into a CFHTTPMessageRef. Returns the serialized CFHTTPMessageRef.
*/
- (NSData *)prepareSample:(CMSampleBufferRef)sampleBuffer {
CVImageBufferRef imageBuffer = CMSampleBufferGetImageBuffer(sampleBuffer);
CVPixelBufferLockBaseAddress(imageBuffer, kCVPixelBufferLock_ReadOnly);
CGFloat scaleFactor = 2;
size_t width = CVPixelBufferGetWidth(imageBuffer)/scaleFactor;
size_t height = CVPixelBufferGetHeight(imageBuffer)/scaleFactor;
CGImagePropertyOrientation orientation = ((__bridge NSNumber*)CMGetAttachment(sampleBuffer, (__bridge CFStringRef)RPVideoSampleOrientationKey , NULL)).unsignedIntValue;
CGAffineTransform scaleTransform = CGAffineTransformMakeScale(1/scaleFactor, 1/scaleFactor);
NSData *bufferData = [self jpegDataFromPixelBuffer:imageBuffer withScaling:scaleTransform];
CVPixelBufferUnlockBaseAddress(imageBuffer, kCVPixelBufferLock_ReadOnly);
if (bufferData) {
CFHTTPMessageRef httpResponse = CFHTTPMessageCreateResponse(kCFAllocatorDefault, 200, NULL, kCFHTTPVersion1_1);
CFHTTPMessageSetHeaderFieldValue(httpResponse, (__bridge CFStringRef)@"Content-Length", (__bridge CFStringRef)[NSString stringWithFormat:@"%ld", bufferData.length]);
CFHTTPMessageSetHeaderFieldValue(httpResponse, (__bridge CFStringRef)@"Buffer-Width", (__bridge CFStringRef)[NSString stringWithFormat:@"%ld", width]);
CFHTTPMessageSetHeaderFieldValue(httpResponse, (__bridge CFStringRef)@"Buffer-Height", (__bridge CFStringRef)[NSString stringWithFormat:@"%ld", height]);
CFHTTPMessageSetHeaderFieldValue(httpResponse, (__bridge CFStringRef)@"Buffer-Orientation", (__bridge CFStringRef)[NSString stringWithFormat:@"%u", orientation]);
CFHTTPMessageSetBody(httpResponse, (__bridge CFDataRef)bufferData);
CFDataRef serializedMessage = CFHTTPMessageCopySerializedMessage(httpResponse);
CFRelease(httpResponse);
return CFBridgingRelease(serializedMessage);
}
return nil;
}
- (BOOL)sendData {
if (!self.dataToSend) {
NSLog(@"no data to send");
return false;
}
NSUInteger bytesLeft = self.dataToSend.length - self.byteIndex;
NSInteger length = bytesLeft > kBufferMaxLenght ? kBufferMaxLenght : bytesLeft;
uint8_t buffer[length];
[self.dataToSend getBytes:&buffer range:NSMakeRange(self.byteIndex, length)];
length = [self.connection writeBufferToStream:buffer maxLength:length];
if (length > 0) {
self.byteIndex += length;
bytesLeft -= length;
if (bytesLeft == 0) {
NSLog(@"video sample processed successfully");
self.dataToSend = nil;
self.byteIndex = 0;
}
}
else {
NSLog(@"writeBufferToStream failure");
}
return true;
}
- (NSData *)jpegDataFromPixelBuffer:(CVPixelBufferRef)pixelBuffer withScaling:(CGAffineTransform)scaleTransform {
CIImage *image = [[CIImage alloc] initWithCVPixelBuffer:pixelBuffer];
image = [image imageByApplyingTransform:scaleTransform];
NSDictionary *options = @{(NSString *)kCGImageDestinationLossyCompressionQuality: [NSNumber numberWithFloat:1.0]};
NSData *imageData = [self.imageContext JPEGRepresentationOfImage:image
colorSpace:image.colorSpace
options:options];
return imageData;
}
@end

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/*
* Copyright @ 2021-present 8x8, Inc.
*
* 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.
*/
import Foundation
import ReplayKit
private enum Constants {
static let bufferMaxLength = 10240
}
class SampleUploader {
private static var imageContext = CIContext(options: nil)
@Atomic private var isReady: Bool = false
private var connection: SocketConnection
private var dataToSend: Data?
private var byteIndex = 0
private let serialQueue: DispatchQueue
init(connection: SocketConnection) {
self.connection = connection
self.serialQueue = DispatchQueue(label: "org.jitsi.meet.broadcast.sampleUploader")
setupConnection()
}
@discardableResult func send(sample buffer: CMSampleBuffer) -> Bool {
guard isReady == true else {
return false
}
isReady = false
dataToSend = prepare(sample: buffer)
byteIndex = 0
serialQueue.async { [weak self] in
self?.sendDataChunk()
}
return true
}
}
private extension SampleUploader {
func setupConnection() {
connection.didOpen = { [weak self] in
self?.isReady = true
}
connection.streamHasSpaceAvailable = { [weak self] in
self?.serialQueue.async {
self?.isReady = !(self?.sendDataChunk() ?? true)
}
}
}
@discardableResult func sendDataChunk() -> Bool {
guard let dataToSend = dataToSend else {
return false
}
var bytesLeft = dataToSend.count - byteIndex
var length = bytesLeft > Constants.bufferMaxLength ? Constants.bufferMaxLength : bytesLeft
length = dataToSend[byteIndex..<(byteIndex + length)].withUnsafeBytes {
guard let ptr = $0.bindMemory(to: UInt8.self).baseAddress else {
return 0
}
return connection.writeToStream(buffer: ptr, maxLength: length)
}
if length > 0 {
byteIndex += length
bytesLeft -= length
if bytesLeft == 0 {
self.dataToSend = nil
byteIndex = 0
}
} else {
print("writeBufferToStream failure")
}
return true
}
func prepare(sample buffer: CMSampleBuffer) -> Data? {
guard let imageBuffer = CMSampleBufferGetImageBuffer(buffer) else {
print("image buffer not available")
return nil
}
CVPixelBufferLockBaseAddress(imageBuffer, .readOnly)
let scaleFactor = 2.0
let width = CVPixelBufferGetWidth(imageBuffer)/Int(scaleFactor)
let height = CVPixelBufferGetHeight(imageBuffer)/Int(scaleFactor)
let orientation = CMGetAttachment(buffer, key: RPVideoSampleOrientationKey as CFString, attachmentModeOut: nil)?.uintValue ?? 0
let scaleTransform = CGAffineTransform(scaleX: CGFloat(1.0/scaleFactor), y: CGFloat(1.0/scaleFactor))
let bufferData = self.jpegData(from: imageBuffer, scale: scaleTransform)
CVPixelBufferUnlockBaseAddress(imageBuffer, .readOnly)
guard let messageData = bufferData else {
print("corrupted image buffer")
return nil
}
let httpResponse = CFHTTPMessageCreateResponse(nil, 200, nil, kCFHTTPVersion1_1).takeRetainedValue()
CFHTTPMessageSetHeaderFieldValue(httpResponse, "Content-Length" as CFString, String(messageData.count) as CFString)
CFHTTPMessageSetHeaderFieldValue(httpResponse, "Buffer-Width" as CFString, String(width) as CFString)
CFHTTPMessageSetHeaderFieldValue(httpResponse, "Buffer-Height" as CFString, String(height) as CFString)
CFHTTPMessageSetHeaderFieldValue(httpResponse, "Buffer-Orientation" as CFString, String(orientation) as CFString)
CFHTTPMessageSetBody(httpResponse, messageData as CFData)
let serializedMessage = CFHTTPMessageCopySerializedMessage(httpResponse)?.takeRetainedValue() as Data?
return serializedMessage
}
func jpegData(from buffer: CVPixelBuffer, scale scaleTransform: CGAffineTransform) -> Data? {
var image = CIImage(cvPixelBuffer: buffer)
image = image.transformed(by: scaleTransform)
guard let colorSpace = image.colorSpace else {
return nil
}
let options: [CIImageRepresentationOption: Float] = [kCGImageDestinationLossyCompressionQuality as CIImageRepresentationOption: 1.0]
let imageData = SampleUploader.imageContext.jpegRepresentation(of: image, colorSpace: colorSpace, options: options)
return imageData
}
}

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@ -1,34 +0,0 @@
/*
* Copyright @ 2021-present 8x8, Inc.
*
* 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.
*/
#import <Foundation/Foundation.h>
NS_ASSUME_NONNULL_BEGIN
@interface SocketConnection : NSObject
@property (nonatomic, copy, nullable) void (^didOpen)(void);
@property (nonatomic, copy, nullable) void (^didClose)(NSError*);
@property (nonatomic, copy, nullable) void (^streamHasSpaceAvailable)(void);
- (instancetype)initWithFilePath:(nonnull NSString *)filePath;
- (BOOL)open;
- (void)close;
- (NSInteger)writeBufferToStream:(const uint8_t*)buffer maxLength:(NSInteger)length;
@end
NS_ASSUME_NONNULL_END

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@ -1,189 +0,0 @@
/*
* Copyright @ 2021-present 8x8, Inc.
*
* 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.
*/
#include <sys/socket.h>
#include <sys/un.h>
#import "SocketConnection.h"
@interface SocketConnection () <NSStreamDelegate>
@property (nonatomic, copy) NSString *filePath;
@property (nonatomic, strong) NSInputStream *inputStream;
@property (nonatomic, strong) NSOutputStream *outputStream;
@property (nonatomic, strong) NSThread *networkThread;
@end
@implementation SocketConnection {
int _socket;
struct sockaddr_un _socketAddr;
}
- (instancetype)initWithFilePath:(NSString *)path {
self = [super init];
if (self) {
self.filePath = path;
[self setupSocketWithFilePath:path];
[self setupNetworkThread];
}
return self;
}
- (BOOL)open {
NSLog(@"Open socket connection");
if (![[NSFileManager defaultManager] fileExistsAtPath:self.filePath]) {
NSLog(@"failure: socket file missing");
return false;
}
int status = connect(_socket, (struct sockaddr *)&_socketAddr, sizeof(_socketAddr));
if (status < 0) {
NSLog(@"failure: socket connect (%d)", status);
return false;
}
[self.networkThread start];
CFReadStreamRef readStream;
CFWriteStreamRef writeStream;
CFStreamCreatePairWithSocket(kCFAllocatorDefault, _socket, &readStream, &writeStream);
self.inputStream = (__bridge_transfer NSInputStream *)readStream;
self.inputStream.delegate = self;
[self.inputStream setProperty:@"kCFBooleanTrue" forKey:@"kCFStreamPropertyShouldCloseNativeSocket"];
self.outputStream = (__bridge_transfer NSOutputStream *)writeStream;
self.outputStream.delegate = self;
[self.outputStream setProperty:@"kCFBooleanTrue" forKey:@"kCFStreamPropertyShouldCloseNativeSocket"];
[self performSelector:@selector(scheduleStreams) onThread:self.networkThread withObject:nil waitUntilDone:true];
[self.inputStream open];
[self.outputStream open];
NSLog(@"read stream status: %ld", CFReadStreamGetStatus(readStream));
NSLog(@"write stream status: %ld", CFWriteStreamGetStatus(writeStream));
return true;
}
- (void)close {
[self performSelector:@selector(unscheduleStreams) onThread:self.networkThread withObject:nil waitUntilDone:true];
self.inputStream.delegate = nil;
self.outputStream.delegate = nil;
[self.inputStream close];
[self.outputStream close];
[self.networkThread cancel];
}
- (NSInteger)writeBufferToStream:(const uint8_t*)buffer maxLength:(NSInteger)length {
return [self.outputStream write:buffer maxLength:length];
}
// MARK: Private Methods
- (BOOL)isOpen {
return self.inputStream.streamStatus == NSStreamStatusOpen && self.outputStream.streamStatus == NSStreamStatusOpen;
}
- (void)setupSocketWithFilePath:(NSString*)path {
_socket = socket(AF_UNIX, SOCK_STREAM, 0);
memset(&_socketAddr, 0, sizeof(_socketAddr));
_socketAddr.sun_family = AF_UNIX;
strncpy(_socketAddr.sun_path, path.UTF8String, sizeof(_socketAddr.sun_path) - 1);
}
- (void)setupNetworkThread {
self.networkThread = [[NSThread alloc] initWithBlock:^{
do {
@autoreleasepool {
[[NSRunLoop currentRunLoop] run];
}
} while (![NSThread currentThread].isCancelled);
}];
self.networkThread.qualityOfService = NSQualityOfServiceUserInitiated;
}
- (void)scheduleStreams {
[self.inputStream scheduleInRunLoop:NSRunLoop.currentRunLoop forMode:NSRunLoopCommonModes];
[self.outputStream scheduleInRunLoop:NSRunLoop.currentRunLoop forMode:NSRunLoopCommonModes];
}
- (void)unscheduleStreams {
[self.inputStream removeFromRunLoop:NSRunLoop.currentRunLoop forMode:NSRunLoopCommonModes];
[self.outputStream removeFromRunLoop:NSRunLoop.currentRunLoop forMode:NSRunLoopCommonModes];
}
- (void)notifyDidClose:(NSError *)error {
if (self.didClose) {
self.didClose(error);
}
}
@end
#pragma mark - NSStreamDelegate
@implementation SocketConnection (NSStreamDelegate)
- (void)stream:(NSStream *)aStream handleEvent:(NSStreamEvent)eventCode {
switch (eventCode) {
case NSStreamEventOpenCompleted:
NSLog(@"client stream open completed");
if (aStream == self.outputStream && self.didOpen) {
self.didOpen();
}
break;
case NSStreamEventHasBytesAvailable:
if (aStream == self.inputStream) {
uint8_t buffer;
NSInteger numberOfBytesRead = [(NSInputStream *)aStream read:&buffer maxLength:sizeof(buffer)];
if (!numberOfBytesRead && aStream.streamStatus == NSStreamStatusAtEnd) {
NSLog(@"server socket closed");
[self close];
[self notifyDidClose:nil];
}
}
break;
case NSStreamEventHasSpaceAvailable:
if (aStream == self.outputStream && self.streamHasSpaceAvailable) {
NSLog(@"client stream has space available");
self.streamHasSpaceAvailable();
}
break;
case NSStreamEventErrorOccurred:
NSLog(@"client stream error occurred: %@", aStream.streamError);
[self close];
[self notifyDidClose:aStream.streamError];
break;
default:
break;
}
}
@end

View File

@ -0,0 +1,205 @@
/*
* Copyright @ 2021-present 8x8, Inc.
*
* 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.
*/
import Foundation
class SocketConnection: NSObject {
var didOpen: (() -> Void)?
var didClose: ((Error?) -> Void)?
var streamHasSpaceAvailable: (() -> Void)?
private let filePath: String
private var socketHandle: Int32 = -1
private var address: sockaddr_un?
private var inputStream: InputStream?
private var outputStream: OutputStream?
private var networkQueue: DispatchQueue?
private var shouldKeepRunning = false
init?(filePath path: String) {
filePath = path
socketHandle = Darwin.socket(AF_UNIX, SOCK_STREAM, 0)
guard socketHandle != -1 else {
print("failure: create socket")
return nil
}
}
func open() -> Bool {
print("open socket connection")
guard FileManager.default.fileExists(atPath: filePath) else {
print("failure: socket file missing")
return false
}
guard setupAddress() == true else {
return false
}
guard connectSocket() == true else {
return false
}
setupStreams()
inputStream?.open()
outputStream?.open()
return true
}
func close() {
unscheduleStreams()
inputStream?.delegate = nil
outputStream?.delegate = nil
inputStream?.close()
outputStream?.close()
inputStream = nil
outputStream = nil
}
func writeToStream(buffer: UnsafePointer<UInt8>, maxLength length: Int) -> Int {
return outputStream?.write(buffer, maxLength: length) ?? 0
}
}
extension SocketConnection: StreamDelegate {
func stream(_ aStream: Stream, handle eventCode: Stream.Event) {
switch eventCode {
case .openCompleted:
print("client stream open completed")
if aStream == outputStream {
didOpen?()
}
case .hasBytesAvailable:
if aStream == inputStream {
var buffer: UInt8 = 0
let numberOfBytesRead = inputStream?.read(&buffer, maxLength: 1)
if numberOfBytesRead == 0 && aStream.streamStatus == .atEnd {
print("server socket closed")
close()
notifyDidClose(error: nil)
}
}
case .hasSpaceAvailable:
if aStream == outputStream {
streamHasSpaceAvailable?()
}
case .errorOccurred:
print("client stream error occured: \(String(describing: aStream.streamError))")
close()
notifyDidClose(error: aStream.streamError)
default:
break
}
}
}
private extension SocketConnection {
func setupAddress() -> Bool {
var addr = sockaddr_un()
guard filePath.count < MemoryLayout.size(ofValue: addr.sun_path) else {
print("failure: fd path is too long")
return false
}
_ = withUnsafeMutablePointer(to: &addr.sun_path.0) { ptr in
filePath.withCString {
strncpy(ptr, $0, filePath.count)
}
}
address = addr
return true
}
func connectSocket() -> Bool {
guard var addr = address else {
return false
}
let status = withUnsafePointer(to: &addr) { ptr in
ptr.withMemoryRebound(to: sockaddr.self, capacity: 1) {
Darwin.connect(socketHandle, $0, socklen_t(MemoryLayout<sockaddr_un>.size))
}
}
guard status == noErr else {
print("failure: \(status)")
return false
}
return true
}
func setupStreams() {
var readStream: Unmanaged<CFReadStream>?
var writeStream: Unmanaged<CFWriteStream>?
CFStreamCreatePairWithSocket(kCFAllocatorDefault, socketHandle, &readStream, &writeStream)
inputStream = readStream?.takeRetainedValue()
inputStream?.delegate = self
inputStream?.setProperty(kCFBooleanTrue, forKey: Stream.PropertyKey(kCFStreamPropertyShouldCloseNativeSocket as String))
outputStream = writeStream?.takeRetainedValue()
outputStream?.delegate = self
outputStream?.setProperty(kCFBooleanTrue, forKey: Stream.PropertyKey(kCFStreamPropertyShouldCloseNativeSocket as String))
scheduleStreams()
}
func scheduleStreams() {
shouldKeepRunning = true
networkQueue = DispatchQueue.global(qos: .userInitiated)
networkQueue?.async { [weak self] in
self?.inputStream?.schedule(in: .current, forMode: .common)
self?.outputStream?.schedule(in: .current, forMode: .common)
var isRunning = false
repeat {
isRunning = self?.shouldKeepRunning ?? false && RunLoop.current.run(mode: .default, before: .distantFuture)
} while (isRunning)
}
}
func unscheduleStreams() {
networkQueue?.sync { [weak self] in
self?.inputStream?.remove(from: .current, forMode: .common)
self?.outputStream?.remove(from: .current, forMode: .common)
}
shouldKeepRunning = false
}
func notifyDidClose(error: Error?) {
if didClose != nil {
didClose?(error)
}
}
}