屏幕共享fix

Example/ScreenShareUploader/Info.plist

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+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+<dict>
+	<key>NSExtension</key>
+	<dict>
+		<key>NSExtensionPointIdentifier</key>
+		<string>com.apple.broadcast-services-upload</string>
+		<key>NSExtensionPrincipalClass</key>
+		<string>SampleHandler</string>
+		<key>RPBroadcastProcessMode</key>
+		<string>RPBroadcastProcessModeSampleBuffer</string>
+	</dict>
+</dict>
+</plist>

Example/ScreenShareUploader/SampleHandler.h

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+//
+//  SampleHandler.h
+//  ScreenShareUploader
+//
+//  Created by Caleb on 12/8/25.
+//  Copyright © 2025 Caleb. All rights reserved.
+//
+
+#import <ReplayKit/ReplayKit.h>
+#import <SellyCloudSDK/SellyCloudManager.h>
+
+@interface SampleHandler : SellyRTCReplayKitHandler
+
+@end

Example/ScreenShareUploader/SampleHandler.m

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+//
+//  SampleHandler.m
+//  ScreenShareUploader
+//
+//  Created by Caleb on 12/8/25.
+//
+
+#import "SampleHandler.h"
+#import <ReplayKit/ReplayKit.h>
+#import <SellyCloudSDK/SellyCloudManager.h>
+
+#define kSellyRTCMessagePortName CFSTR("com.sellycloud.screenshare.port")
+
+@interface SampleHandler ()
+
+@end
+
+@implementation SampleHandler
+
+#pragma mark - Broadcast lifecycle
+
+- (void)broadcastStartedWithSetupInfo:(NSDictionary<NSString *,NSObject *> *)setupInfo {
+    // User has requested to start the broadcast. Setup info from the UI extension can be supplied but optional.
+    [super broadcastStartedWithSetupInfo:setupInfo];
+}
+
+- (void)broadcastPaused {
+    // User has requested to pause the broadcast. Samples will stop being delivered.
+    NSLog(@"broadcastPaused");
+    [super broadcastPaused];
+}
+
+- (void)broadcastResumed {
+    // User has requested to resume the broadcast. Samples delivery will resume.
+    NSLog(@"broadcastResumed");
+    [super broadcastResumed];
+}
+
+- (void)broadcastFinished {
+    // User has requested to finish the broadcast.
+    NSLog(@"broadcastFinished");
+    [super broadcastFinished];
+}
+
+- (void)processSampleBuffer:(CMSampleBufferRef)sampleBuffer withType:(RPSampleBufferType)sampleBufferType {
+    [super processSampleBuffer:sampleBuffer withType:sampleBufferType];
+}
+
+#pragma mark - Sample Buffer Handling
+
+/// ReplayKit 每来一帧屏幕数据，就会回调这里
+//- (void)processSampleBuffer:(CMSampleBufferRef)sampleBuffer
+//                   withType:(RPSampleBufferType)sampleBufferType {
+//
+//    if (sampleBufferType != RPSampleBufferTypeVideo) {
+//        return; // SellyRTC 目前我们只推视频帧
+//    }
+//
+//    CVPixelBufferRef pixelBuffer = CMSampleBufferGetImageBuffer(sampleBuffer);
+//    if (!pixelBuffer) return;
+//
+//    // 需要 Retain，因为传递给主 App 后需要使用
+//    CVPixelBufferRetain(pixelBuffer);
+//
+//    
+//}
+
+@end