92f3df8464
Core optimization: - Use CGDisplayStream instead of per-frame CGDisplayCreateImage - Push model: CPU sleeps when screen is static (condition_variable wait) - IOSurface capture avoids expensive image creation per frame - ~47% CPU reduction during active remote desktop (45% → 24%) Additional optimizations: - vImageVerticalReflect (SIMD) replaces manual row-by-row flip - Cache CGColorSpaceRef to avoid per-frame creation/release - Cache tempBuffer to avoid per-frame memory allocation - Throttle getCursorTypeIndex to 250ms (Accessibility API is expensive) Bug fixes: - Fix unreliable screen capture permission check (use actual capture test) - Improve permission logging Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
1145 lines
39 KiB
Plaintext
1145 lines
39 KiB
Plaintext
#import "ScreenHandler.h"
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#import "H264Encoder.h"
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#import "InputHandler.h"
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#import "ClipboardHandler.h"
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#import "../client/IOCPClient.h"
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#import "../common/commands.h"
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#import "../common/FileTransferV2.h"
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#import "../common/logger.h"
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#import "Permissions.h"
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#import <Cocoa/Cocoa.h>
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#import <chrono>
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#import <CoreGraphics/CoreGraphics.h>
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#import <ApplicationServices/ApplicationServices.h>
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#import <mach/mach_time.h>
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#import <Accelerate/Accelerate.h>
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// Global client ID (calculated in main.mm)
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extern uint64_t g_myClientID;
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ScreenHandler::ScreenHandler(IOCPClient* client)
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: m_client(client)
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, m_clientID(0)
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, m_running(false)
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, m_width(0)
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, m_height(0)
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, m_logicalWidth(0)
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, m_logicalHeight(0)
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, m_scaleFactor(1.0)
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, m_displayID(CGMainDisplayID())
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, m_algorithm(ALGORITHM_H264)
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, m_maxFPS(15)
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, m_qualityLevel(QUALITY_GOOD) // Use fixed QUALITY_GOOD (H264) for web compatibility
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, m_h264Bitrate(3000000) // 3 Mbps (matches Windows QUALITY_GOOD)
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, m_displayAssertionID(0)
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, m_colorSpace(nullptr)
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, m_displayStream(nullptr)
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, m_streamQueue(nullptr)
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, m_latestSurface(nullptr)
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, m_hasNewFrame(false)
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{
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memset(&m_bmpHeader, 0, sizeof(m_bmpHeader));
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// Cache color space (avoid per-frame creation)
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m_colorSpace = CGColorSpaceCreateDeviceRGB();
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// Initialize input handler for mouse/keyboard control
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m_inputHandler = std::make_unique<InputHandler>();
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if (m_inputHandler->init()) {
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NSLog(@"InputHandler initialized with accessibility permission");
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} else {
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NSLog(@"InputHandler: waiting for accessibility permission");
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}
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}
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ScreenHandler::~ScreenHandler()
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{
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stop();
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cleanupDisplayStream();
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// Release cached color space
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if (m_colorSpace) {
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CGColorSpaceRelease(m_colorSpace);
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m_colorSpace = nullptr;
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}
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}
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bool ScreenHandler::init()
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{
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// Check permissions
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if (!Permissions::checkScreenCapture()) {
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NSLog(@"Screen capture permission not granted");
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return false;
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}
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// Get main display info
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m_displayID = CGMainDisplayID();
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// Get physical pixel dimensions (what we capture and send)
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CGDisplayModeRef mode = CGDisplayCopyDisplayMode(m_displayID);
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if (mode) {
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m_width = (int)CGDisplayModeGetPixelWidth(mode);
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m_height = (int)CGDisplayModeGetPixelHeight(mode);
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CGDisplayModeRelease(mode);
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} else {
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m_width = (int)CGDisplayPixelsWide(m_displayID);
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m_height = (int)CGDisplayPixelsHigh(m_displayID);
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}
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// Get logical point dimensions (what CGEvent uses)
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// NSScreen provides logical dimensions
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NSScreen* mainScreen = [NSScreen mainScreen];
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if (mainScreen) {
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NSRect frame = [mainScreen frame];
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m_logicalWidth = (int)frame.size.width;
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m_logicalHeight = (int)frame.size.height;
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} else {
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// Fallback: use physical dimensions
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m_logicalWidth = m_width;
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m_logicalHeight = m_height;
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}
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// Calculate scale factor (Retina displays have factor > 1.0)
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m_scaleFactor = (double)m_width / (double)m_logicalWidth;
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NSLog(@"Screen dimensions: physical=%dx%d, logical=%dx%d, scale=%.2f",
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m_width, m_height, m_logicalWidth, m_logicalHeight, m_scaleFactor);
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if (m_width <= 0 || m_height <= 0) {
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NSLog(@"Invalid screen dimensions: %dx%d", m_width, m_height);
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return false;
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}
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// Initialize BITMAPINFOHEADER
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m_bmpHeader.biSize = sizeof(BITMAPINFOHEADER_MAC);
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m_bmpHeader.biWidth = m_width;
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m_bmpHeader.biHeight = m_height;
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m_bmpHeader.biPlanes = 1;
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m_bmpHeader.biBitCount = 32;
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m_bmpHeader.biCompression = 0; // BI_RGB
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m_bmpHeader.biSizeImage = m_width * m_height * 4;
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// Allocate frame buffers
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m_prevFrame.resize(m_bmpHeader.biSizeImage, 0);
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m_currFrame.resize(m_bmpHeader.biSizeImage, 0);
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m_diffBuffer.resize(1 + 1 + 8 + 1 + m_bmpHeader.biSizeImage * 2);
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// Wake display if needed (do this early, before sending TOKEN_BITMAPINFO)
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bool wasAsleep = CGDisplayIsAsleep(m_displayID);
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bool isLocked = false;
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CFDictionaryRef sessionInfo = CGSessionCopyCurrentDictionary();
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if (sessionInfo) {
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CFBooleanRef screenLocked = (CFBooleanRef)CFDictionaryGetValue(
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sessionInfo, CFSTR("CGSSessionScreenIsLocked"));
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if (screenLocked && CFBooleanGetValue(screenLocked)) {
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isLocked = true;
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}
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CFRelease(sessionInfo);
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}
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if (wasAsleep || isLocked) {
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NSLog(@"Waking display in init (asleep=%d, locked=%d)...", wasAsleep, isLocked);
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// Create NoDisplaySleep assertion - this wakes the display
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if (m_displayAssertionID == 0) {
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IOReturn result = IOPMAssertionCreateWithName(
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kIOPMAssertionTypeNoDisplaySleep,
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kIOPMAssertionLevelOn,
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CFSTR("SimpleRemoter - remote desktop session active"),
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&m_displayAssertionID
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);
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if (result == kIOReturnSuccess) {
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NSLog(@"Display assertion created (ID: %u)", m_displayAssertionID);
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}
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}
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// Declare user activity to ensure wake
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IOPMAssertionID wakeAssertionID = 0;
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IOPMAssertionDeclareUserActivity(
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CFSTR("SimpleRemoter - waking display"),
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kIOPMUserActiveLocal,
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&wakeAssertionID
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);
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if (wakeAssertionID) {
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IOPMAssertionRelease(wakeAssertionID);
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}
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// Brief wait for loginwindow to render
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std::this_thread::sleep_for(std::chrono::milliseconds(500));
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NSLog(@"Display wake complete");
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}
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// Initialize CGDisplayStream for efficient capture
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if (!initDisplayStream()) {
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NSLog(@"Warning: CGDisplayStream init failed, falling back to legacy capture");
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}
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NSLog(@"ScreenHandler initialized: %dx%d", m_width, m_height);
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return true;
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}
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bool ScreenHandler::initDisplayStream()
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{
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// Create dispatch queue for stream callbacks
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m_streamQueue = dispatch_queue_create("com.ghost.screenstream", DISPATCH_QUEUE_SERIAL);
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if (!m_streamQueue) {
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NSLog(@"Failed to create dispatch queue for display stream");
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return false;
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}
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// Stream properties
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CFMutableDictionaryRef properties = CFDictionaryCreateMutable(
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kCFAllocatorDefault, 0,
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&kCFTypeDictionaryKeyCallBacks,
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&kCFTypeDictionaryValueCallBacks
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);
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// Request minimum frame interval based on FPS (e.g., 15 FPS = 1/15 sec)
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int fps = m_maxFPS.load();
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if (fps <= 0) fps = 15;
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double interval = 1.0 / (double)fps;
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CFNumberRef intervalRef = CFNumberCreate(kCFAllocatorDefault, kCFNumberDoubleType, &interval);
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CFDictionarySetValue(properties, kCGDisplayStreamMinimumFrameTime, intervalRef);
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CFRelease(intervalRef);
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// Show cursor in stream
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CFDictionarySetValue(properties, kCGDisplayStreamShowCursor, kCFBooleanFalse);
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// Preserve aspect ratio
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CFDictionarySetValue(properties, kCGDisplayStreamPreserveAspectRatio, kCFBooleanTrue);
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// Create the display stream with BGRA format
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__block ScreenHandler* handler = this;
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m_displayStream = CGDisplayStreamCreateWithDispatchQueue(
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m_displayID,
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m_width,
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m_height,
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'BGRA', // Pixel format
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properties,
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m_streamQueue,
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^(CGDisplayStreamFrameStatus status,
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uint64_t displayTime,
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IOSurfaceRef frameSurface,
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CGDisplayStreamUpdateRef updateRef) {
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(void)displayTime;
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(void)updateRef;
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if (status == kCGDisplayStreamFrameStatusFrameComplete && frameSurface) {
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handler->processIOSurface(frameSurface);
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} else if (status == kCGDisplayStreamFrameStatusFrameIdle) {
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// Screen not changed, still notify for FPS timing
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handler->m_hasNewFrame.store(true);
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handler->m_surfaceCond.notify_one();
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} else if (status == kCGDisplayStreamFrameStatusStopped) {
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NSLog(@"CGDisplayStream stopped");
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}
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}
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);
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CFRelease(properties);
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if (!m_displayStream) {
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NSLog(@"Failed to create CGDisplayStream");
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m_streamQueue = nullptr; // ARC manages dispatch objects
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return false;
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}
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// Start the stream
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CGError err = CGDisplayStreamStart(m_displayStream);
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if (err != kCGErrorSuccess) {
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NSLog(@"Failed to start CGDisplayStream: %d", err);
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CFRelease(m_displayStream);
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m_displayStream = nullptr;
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m_streamQueue = nullptr; // ARC manages dispatch objects
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return false;
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}
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NSLog(@"CGDisplayStream started: %dx%d @ %d FPS", m_width, m_height, fps);
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return true;
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}
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void ScreenHandler::cleanupDisplayStream()
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{
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if (m_displayStream) {
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CGDisplayStreamStop(m_displayStream);
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CFRelease(m_displayStream);
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m_displayStream = nullptr;
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}
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// ARC manages dispatch objects, just nil the pointer
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m_streamQueue = nullptr;
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std::lock_guard<std::mutex> lock(m_surfaceMutex);
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if (m_latestSurface) {
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CFRelease(m_latestSurface);
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m_latestSurface = nullptr;
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}
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}
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void ScreenHandler::processIOSurface(IOSurfaceRef surface)
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{
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// Retain the surface and store it
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std::lock_guard<std::mutex> lock(m_surfaceMutex);
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if (m_latestSurface) {
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CFRelease(m_latestSurface);
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}
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m_latestSurface = (IOSurfaceRef)CFRetain(surface);
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m_hasNewFrame.store(true);
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m_surfaceCond.notify_one();
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}
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bool ScreenHandler::captureFromIOSurface(IOSurfaceRef surface, std::vector<uint8_t>& buffer)
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{
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if (!surface) return false;
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// Lock the surface for CPU read
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IOSurfaceLock(surface, kIOSurfaceLockReadOnly, nullptr);
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size_t width = IOSurfaceGetWidth(surface);
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size_t height = IOSurfaceGetHeight(surface);
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size_t bytesPerRow = IOSurfaceGetBytesPerRow(surface);
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void* baseAddr = IOSurfaceGetBaseAddress(surface);
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if (!baseAddr || width != (size_t)m_width || height != (size_t)m_height) {
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IOSurfaceUnlock(surface, kIOSurfaceLockReadOnly, nullptr);
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return false;
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}
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// Ensure temp buffer is allocated
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size_t requiredSize = m_width * 4 * m_height;
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if (m_tempBuffer.size() != requiredSize) {
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m_tempBuffer.resize(requiredSize);
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}
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// Copy from IOSurface to temp buffer (handle different bytesPerRow)
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size_t dstBytesPerRow = m_width * 4;
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if (bytesPerRow == dstBytesPerRow) {
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memcpy(m_tempBuffer.data(), baseAddr, requiredSize);
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} else {
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// Row by row copy for different strides
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uint8_t* src = (uint8_t*)baseAddr;
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uint8_t* dst = m_tempBuffer.data();
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for (size_t y = 0; y < height; y++) {
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memcpy(dst + y * dstBytesPerRow, src + y * bytesPerRow, dstBytesPerRow);
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}
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}
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IOSurfaceUnlock(surface, kIOSurfaceLockReadOnly, nullptr);
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// Flip vertically using Accelerate framework (SIMD optimized)
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vImage_Buffer src = {
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.data = m_tempBuffer.data(),
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.height = (vImagePixelCount)height,
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.width = (vImagePixelCount)width,
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.rowBytes = dstBytesPerRow
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};
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vImage_Buffer dst = {
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.data = buffer.data(),
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.height = (vImagePixelCount)height,
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.width = (vImagePixelCount)width,
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.rowBytes = dstBytesPerRow
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};
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vImage_Error err = vImageVerticalReflect_ARGB8888(&src, &dst, kvImageNoFlags);
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if (err != kvImageNoError) {
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// Fallback to manual flip
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for (size_t y = 0; y < height; y++) {
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memcpy(buffer.data() + (height - 1 - y) * dstBytesPerRow,
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m_tempBuffer.data() + y * dstBytesPerRow,
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dstBytesPerRow);
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}
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}
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return true;
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}
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void ScreenHandler::start(IOCPClient* client, uint64_t clientID)
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{
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// If already running, just send TOKEN_BITMAPINFO again
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// This allows server to create additional dialogs (MFC can open while Web is active)
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if (m_running) {
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NSLog(@"ScreenHandler already running, sending TOKEN_BITMAPINFO for new dialog");
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sendBitmapInfo();
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return;
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}
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m_client = client;
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m_clientID = clientID;
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m_running = true;
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// Display wake was already done in init(), just ensure assertion exists
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if (m_displayAssertionID == 0) {
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IOReturn result = IOPMAssertionCreateWithName(
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kIOPMAssertionTypeNoDisplaySleep,
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kIOPMAssertionLevelOn,
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CFSTR("SimpleRemoter - remote desktop session active"),
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&m_displayAssertionID
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);
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if (result == kIOReturnSuccess) {
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NSLog(@"Display sleep disabled (ID: %u)", m_displayAssertionID);
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}
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}
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m_captureThread = std::thread(&ScreenHandler::captureLoop, this);
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}
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void ScreenHandler::stop()
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{
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m_running = false;
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// Wake up capture thread if waiting
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m_surfaceCond.notify_all();
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if (m_captureThread.joinable()) {
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m_captureThread.join();
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}
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// Close H264 encoder if open
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if (m_h264Encoder) {
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m_h264Encoder->close();
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m_h264Encoder.reset();
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}
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// Release display sleep assertion - allow screen to turn off
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if (m_displayAssertionID != 0) {
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IOPMAssertionRelease(m_displayAssertionID);
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NSLog(@"Display sleep re-enabled (released ID: %u)", m_displayAssertionID);
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m_displayAssertionID = 0;
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}
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}
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void ScreenHandler::sendBitmapInfo()
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{
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if (!m_client) return;
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// Build packet: [TOKEN_BITMAPINFO][BITMAPINFOHEADER][clientID][reserved][ScreenSettings]
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// ScreenSettings defined in commands.h (100 bytes), QualityLevel at offset 32
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const uint32_t len = 1 + sizeof(BITMAPINFOHEADER_MAC) + 2 * sizeof(uint64_t) + sizeof(ScreenSettings);
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std::vector<uint8_t> buf(len, 0);
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buf[0] = TOKEN_BITMAPINFO;
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memcpy(&buf[1], &m_bmpHeader, sizeof(BITMAPINFOHEADER_MAC));
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uint64_t clientID = g_myClientID;
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memcpy(&buf[1 + sizeof(BITMAPINFOHEADER_MAC)], &clientID, sizeof(uint64_t));
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ScreenSettings settings = {};
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settings.MaxFPS = m_maxFPS.load();
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settings.QualityLevel = m_qualityLevel; // Fixed quality level (e.g., QUALITY_GOOD = 2)
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memcpy(&buf[1 + sizeof(BITMAPINFOHEADER_MAC) + 2 * sizeof(uint64_t)], &settings, sizeof(ScreenSettings));
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m_client->Send2Server((char*)buf.data(), len);
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NSLog(@"SendBitmapInfo: clientID=%llu, QualityLevel=%d, SettingsSize=%zu",
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clientID, m_qualityLevel, sizeof(ScreenSettings));
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}
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void ScreenHandler::OnReceive(uint8_t* data, ULONG size)
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{
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if (!size) return;
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switch (data[0]) {
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case COMMAND_NEXT:
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// Server ready, handled externally
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NSLog(@"Received COMMAND_NEXT from server");
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if (!m_running) {
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start(m_client, g_myClientID);
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}
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break;
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case COMMAND_SCREEN_CONTROL:
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// Handle mouse/keyboard control commands
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// Protocol: [COMMAND_SCREEN_CONTROL:1][MSG64:48]
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if (size >= 1 + sizeof(MSG64_MAC) && m_inputHandler) {
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MSG64_MAC msg;
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memcpy(&msg, data + 1, sizeof(MSG64_MAC));
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|
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// Convert physical pixel coordinates to logical point coordinates
|
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// Server sends coordinates in physical pixels (matching our captured screen)
|
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// CGEvent expects logical points (for Retina displays, physical/scale)
|
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if (m_scaleFactor > 1.0) {
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// Extract coordinates from lParam (MAKELPARAM format: low=x, high=y)
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int x = (int)(msg.lParam & 0xFFFF);
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int y = (int)((msg.lParam >> 16) & 0xFFFF);
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// Scale down to logical coordinates
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x = (int)(x / m_scaleFactor);
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y = (int)(y / m_scaleFactor);
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|
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// Update lParam with scaled coordinates
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msg.lParam = (uint64_t)x | ((uint64_t)y << 16);
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msg.pt_x = x;
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msg.pt_y = y;
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}
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|
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m_inputHandler->handleInputEvent(&msg);
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}
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break;
|
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|
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case CMD_QUALITY_LEVEL:
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if (size >= 2) {
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int8_t level = (int8_t)data[1];
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bool persist = (size >= 3) ? data[2] : false;
|
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applyQualityLevel(level, persist);
|
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}
|
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break;
|
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|
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case COMMAND_SCREEN_SET_CLIPBOARD:
|
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// 服务端设置剪贴板: [cmd:1][text:N]
|
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if (size > 1) {
|
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if (ClipboardHandler::SetTextRaw((const char*)(data + 1), size - 1)) {
|
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NSLog(@">>> Clipboard SET: %zu bytes", size - 1);
|
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} else {
|
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NSLog(@"*** Clipboard SET failed");
|
||
}
|
||
}
|
||
break;
|
||
|
||
case COMMAND_SCREEN_GET_CLIPBOARD:
|
||
// 服务端请求剪贴板: [cmd:1][hash:64][hmac:16]
|
||
// 返回: [TOKEN_CLIPBOARD_TEXT:1][text:N] 或 [COMMAND_GET_FOLDER:1][files]
|
||
{
|
||
// 优先检查剪贴板中的文件
|
||
auto files = ClipboardHandler::GetFiles();
|
||
if (!files.empty()) {
|
||
// 返回 COMMAND_GET_FOLDER + 文件列表（多字符串格式：file1\0file2\0\0）
|
||
std::vector<uint8_t> buf;
|
||
buf.push_back(COMMAND_GET_FOLDER);
|
||
for (const auto& f : files) {
|
||
// 文件路径需要转换为 GBK 编码（服务端预期）
|
||
std::string gbkPath = FileTransferV2::utf8ToGbk(f);
|
||
buf.insert(buf.end(), gbkPath.begin(), gbkPath.end());
|
||
buf.push_back(0); // 每个路径后的 null 终止符
|
||
}
|
||
buf.push_back(0); // 结束标记
|
||
m_client->Send2Server((char*)buf.data(), buf.size());
|
||
NSLog(@">>> Clipboard GET: %zu files", files.size());
|
||
break;
|
||
}
|
||
|
||
// 没有文件，返回文本
|
||
std::string text = ClipboardHandler::GetText();
|
||
if (!text.empty()) {
|
||
std::vector<uint8_t> buf(1 + text.size());
|
||
buf[0] = TOKEN_CLIPBOARD_TEXT;
|
||
memcpy(&buf[1], text.data(), text.size());
|
||
m_client->Send2Server((char*)buf.data(), buf.size());
|
||
NSLog(@">>> Clipboard GET: %zu bytes text", text.size());
|
||
} else {
|
||
// 返回空剪贴板
|
||
uint8_t empty = TOKEN_CLIPBOARD_TEXT;
|
||
m_client->Send2Server((char*)&empty, 1);
|
||
NSLog(@">>> Clipboard GET: empty");
|
||
}
|
||
}
|
||
break;
|
||
|
||
case COMMAND_GET_FILE:
|
||
// Server requests file download: [cmd:1][targetDir\0][file1\0file2\0...\0]
|
||
// Use V2 protocol to upload files
|
||
{
|
||
if (size < 3) break;
|
||
|
||
// Parse target directory (GBK encoding)
|
||
const char* ptr = (const char*)(data + 1);
|
||
const char* end = (const char*)(data + size);
|
||
std::string targetDirGbk = ptr;
|
||
std::string targetDir = FileTransferV2::gbkToUtf8(targetDirGbk);
|
||
ptr += targetDirGbk.length() + 1;
|
||
|
||
// Parse file list
|
||
std::vector<std::string> files;
|
||
while (ptr < end && *ptr != '\0') {
|
||
std::string fileGbk = ptr;
|
||
files.push_back(FileTransferV2::gbkToUtf8(fileGbk));
|
||
ptr += fileGbk.length() + 1;
|
||
}
|
||
|
||
// 如果没有文件列表，从剪贴板获取
|
||
if (files.empty()) {
|
||
files = ClipboardHandler::GetFiles();
|
||
}
|
||
|
||
if (!files.empty() && !targetDir.empty()) {
|
||
NSLog(@">>> COMMAND_GET_FILE: %zu files -> %s", files.size(), targetDir.c_str());
|
||
|
||
// Use V2 protocol to send files
|
||
IOCPClient* client = m_client;
|
||
std::thread([files, targetDir, client]() {
|
||
// Collect all files (expand directories)
|
||
std::vector<std::string> allFiles;
|
||
std::vector<std::string> rootCandidates;
|
||
|
||
for (const auto& path : files) {
|
||
struct stat st;
|
||
if (stat(path.c_str(), &st) != 0) continue;
|
||
|
||
if (S_ISDIR(st.st_mode)) {
|
||
std::string dirPath = path;
|
||
if (dirPath.back() != '/') dirPath += '/';
|
||
size_t pos = dirPath.rfind('/', dirPath.length() - 2);
|
||
std::string parentPath = (pos != std::string::npos) ? dirPath.substr(0, pos + 1) : dirPath;
|
||
rootCandidates.push_back(parentPath);
|
||
FileTransferV2::CollectFiles(dirPath, allFiles);
|
||
} else {
|
||
rootCandidates.push_back(path);
|
||
allFiles.push_back(path);
|
||
}
|
||
}
|
||
|
||
if (allFiles.empty()) {
|
||
NSLog(@"*** No files to send");
|
||
return;
|
||
}
|
||
|
||
std::string commonRoot = FileTransferV2::GetCommonRoot(rootCandidates);
|
||
NSLog(@">>> Sending %zu files, root=%s", allFiles.size(), commonRoot.c_str());
|
||
|
||
FileTransferV2::SendFilesV2(allFiles, targetDir, commonRoot, client, g_myClientID);
|
||
}).detach();
|
||
} else {
|
||
NSLog(@"*** COMMAND_GET_FILE: no files or empty target");
|
||
}
|
||
}
|
||
break;
|
||
|
||
default:
|
||
break;
|
||
}
|
||
}
|
||
|
||
void ScreenHandler::applyQualityLevel(int8_t level, bool persist)
|
||
{
|
||
m_qualityLevel = level;
|
||
|
||
// TODO: persist to config file if needed
|
||
(void)persist;
|
||
|
||
if (level == QUALITY_DISABLED) {
|
||
// Disabled mode: keep current settings
|
||
NSLog(@"Quality: Disabled (keep current)");
|
||
return;
|
||
}
|
||
|
||
if (level >= 0 && level < QUALITY_COUNT) {
|
||
// Get profile from commands.h (shared with Windows/Linux)
|
||
const QualityProfile& profile = GetQualityProfile(level);
|
||
|
||
// Apply FPS
|
||
m_maxFPS.store(profile.maxFPS);
|
||
|
||
// Apply algorithm (macOS supports all algorithms including H264 via VideoToolbox)
|
||
m_algorithm.store(profile.algorithm);
|
||
|
||
// Update H264 bitrate if applicable
|
||
if (profile.algorithm == ALGORITHM_H264 && profile.bitRate > 0) {
|
||
m_h264Bitrate = profile.bitRate * 1000; // kbps -> bps
|
||
}
|
||
|
||
NSLog(@"Quality: Level=%d (%s), FPS=%d, Algo=%d, BitRate=%d kbps",
|
||
level,
|
||
level == QUALITY_ULTRA ? "Ultra" :
|
||
level == QUALITY_HIGH ? "High" :
|
||
level == QUALITY_GOOD ? "Good" :
|
||
level == QUALITY_MEDIUM ? "Medium" :
|
||
level == QUALITY_LOW ? "Low" : "Minimal",
|
||
profile.maxFPS, profile.algorithm, profile.bitRate);
|
||
} else {
|
||
// Adaptive mode (level=-1): server adjusts dynamically
|
||
NSLog(@"Quality: Adaptive mode");
|
||
}
|
||
}
|
||
|
||
bool ScreenHandler::captureScreen(std::vector<uint8_t>& buffer)
|
||
{
|
||
// Try to use IOSurface from display stream (more efficient)
|
||
if (m_displayStream) {
|
||
IOSurfaceRef surface = nullptr;
|
||
{
|
||
std::lock_guard<std::mutex> lock(m_surfaceMutex);
|
||
if (m_latestSurface) {
|
||
surface = (IOSurfaceRef)CFRetain(m_latestSurface);
|
||
}
|
||
}
|
||
|
||
if (surface) {
|
||
bool result = captureFromIOSurface(surface, buffer);
|
||
CFRelease(surface);
|
||
if (result) {
|
||
return true;
|
||
}
|
||
}
|
||
// Fall through to legacy method if IOSurface failed
|
||
}
|
||
|
||
// Legacy method: CGDisplayCreateImage (fallback)
|
||
CGImageRef image = CGDisplayCreateImage(m_displayID);
|
||
if (!image) {
|
||
NSLog(@"Failed to capture screen image");
|
||
return false;
|
||
}
|
||
|
||
size_t width = CGImageGetWidth(image);
|
||
size_t height = CGImageGetHeight(image);
|
||
|
||
if (width != (size_t)m_width || height != (size_t)m_height) {
|
||
CGImageRelease(image);
|
||
NSLog(@"Screen resolution changed: %zux%zu", width, height);
|
||
return false;
|
||
}
|
||
|
||
size_t bytesPerRow = width * 4;
|
||
size_t requiredSize = bytesPerRow * height;
|
||
if (m_tempBuffer.size() != requiredSize) {
|
||
m_tempBuffer.resize(requiredSize);
|
||
}
|
||
|
||
CGContextRef context = CGBitmapContextCreate(
|
||
m_tempBuffer.data(),
|
||
width,
|
||
height,
|
||
8,
|
||
bytesPerRow,
|
||
m_colorSpace,
|
||
kCGImageAlphaPremultipliedFirst | kCGBitmapByteOrder32Little
|
||
);
|
||
|
||
if (!context) {
|
||
CGImageRelease(image);
|
||
NSLog(@"Failed to create bitmap context");
|
||
return false;
|
||
}
|
||
|
||
CGContextDrawImage(context, CGRectMake(0, 0, width, height), image);
|
||
CGContextRelease(context);
|
||
CGImageRelease(image);
|
||
|
||
// Flip vertically using Accelerate framework
|
||
vImage_Buffer src = {
|
||
.data = m_tempBuffer.data(),
|
||
.height = (vImagePixelCount)height,
|
||
.width = (vImagePixelCount)width,
|
||
.rowBytes = bytesPerRow
|
||
};
|
||
vImage_Buffer dst = {
|
||
.data = buffer.data(),
|
||
.height = (vImagePixelCount)height,
|
||
.width = (vImagePixelCount)width,
|
||
.rowBytes = bytesPerRow
|
||
};
|
||
|
||
vImage_Error err = vImageVerticalReflect_ARGB8888(&src, &dst, kvImageNoFlags);
|
||
if (err != kvImageNoError) {
|
||
for (size_t y = 0; y < height; y++) {
|
||
memcpy(buffer.data() + (height - 1 - y) * bytesPerRow,
|
||
m_tempBuffer.data() + y * bytesPerRow,
|
||
bytesPerRow);
|
||
}
|
||
}
|
||
|
||
return true;
|
||
}
|
||
|
||
void ScreenHandler::sendFirstScreen()
|
||
{
|
||
if (!captureScreen(m_currFrame)) return;
|
||
if (!m_client) return;
|
||
|
||
uint32_t imgSize = m_bmpHeader.biSizeImage;
|
||
std::vector<uint8_t> buf(1 + imgSize);
|
||
buf[0] = TOKEN_FIRSTSCREEN;
|
||
memcpy(&buf[1], m_currFrame.data(), imgSize);
|
||
|
||
m_client->Send2Server((char*)buf.data(), buf.size());
|
||
|
||
// Save as previous frame
|
||
m_prevFrame = m_currFrame;
|
||
}
|
||
|
||
void ScreenHandler::sendDiffFrame()
|
||
{
|
||
if (!captureScreen(m_currFrame)) return;
|
||
if (!m_client) return;
|
||
|
||
uint8_t* out = m_diffBuffer.data();
|
||
out[0] = TOKEN_NEXTSCREEN;
|
||
uint8_t* data = out + 1;
|
||
|
||
// Write algorithm type
|
||
uint8_t algo = m_algorithm.load();
|
||
memcpy(data, &algo, sizeof(uint8_t));
|
||
|
||
// Write cursor position
|
||
int32_t cursorX, cursorY;
|
||
getCursorPosition(cursorX, cursorY);
|
||
memcpy(data + 1, &cursorX, sizeof(int32_t));
|
||
memcpy(data + 1 + sizeof(int32_t), &cursorY, sizeof(int32_t));
|
||
|
||
// Write cursor type
|
||
uint8_t cursorType = getCursorTypeIndex();
|
||
memcpy(data + 1 + 2 * sizeof(int32_t), &cursorType, sizeof(uint8_t));
|
||
|
||
uint32_t headerSize = 1 + 2 * sizeof(int32_t) + 1;
|
||
uint8_t* diffData = data + headerSize;
|
||
uint32_t diffLen = compareBitmap(m_currFrame.data(), m_prevFrame.data(),
|
||
diffData, m_bmpHeader.biSizeImage, algo);
|
||
|
||
uint32_t totalLen = 1 + headerSize + diffLen;
|
||
m_client->Send2Server((char*)out, totalLen);
|
||
|
||
// Update previous frame
|
||
std::swap(m_prevFrame, m_currFrame);
|
||
}
|
||
|
||
void ScreenHandler::sendH264Frame(bool keyframe)
|
||
{
|
||
if (!captureScreen(m_currFrame)) return;
|
||
if (!m_client) return;
|
||
|
||
// Initialize encoder if needed
|
||
if (!m_h264Encoder) {
|
||
m_h264Encoder = std::make_unique<H264Encoder>();
|
||
int fps = m_maxFPS.load();
|
||
if (fps <= 0) fps = 30;
|
||
if (!m_h264Encoder->open(m_width, m_height, fps, m_h264Bitrate)) {
|
||
NSLog(@"Failed to initialize H264 encoder: %s", m_h264Encoder->getLastError());
|
||
m_h264Encoder.reset();
|
||
return;
|
||
}
|
||
NSLog(@"H264 encoder initialized: %dx%d @ %d fps", m_width, m_height, fps);
|
||
}
|
||
|
||
// Force keyframe if requested
|
||
if (keyframe) {
|
||
m_h264Encoder->forceKeyframe();
|
||
}
|
||
|
||
// Encode frame
|
||
uint8_t* encodedData = nullptr;
|
||
uint32_t encodedSize = 0;
|
||
uint32_t stride = m_width * 4;
|
||
|
||
int result = m_h264Encoder->encode(
|
||
m_currFrame.data(),
|
||
32, // bpp
|
||
stride,
|
||
m_width,
|
||
m_height,
|
||
&encodedData,
|
||
&encodedSize,
|
||
false // Don't flip - keep bottom-up format like Windows client
|
||
);
|
||
|
||
if (result <= 0 || !encodedData || encodedSize == 0) {
|
||
return;
|
||
}
|
||
|
||
// Build packet: [TOKEN_NEXTSCREEN][ALGORITHM_H264][CursorX][CursorY][CursorType][H264Data]
|
||
// Note: H264 always uses TOKEN_NEXTSCREEN because:
|
||
// - Server's TOKEN_KEYFRAME handler does nothing for H264 (just break)
|
||
// - Server's TOKEN_NEXTSCREEN handler calls Decode() for H264
|
||
// - H264 encoder manages keyframes (I-frames) internally
|
||
// - FFmpeg decoder auto-detects I-frames vs P-frames
|
||
uint32_t headerSize = 1 + 1 + 2 * sizeof(int32_t) + 1;
|
||
std::vector<uint8_t> packet(headerSize + encodedSize);
|
||
|
||
packet[0] = TOKEN_NEXTSCREEN;
|
||
packet[1] = ALGORITHM_H264;
|
||
|
||
// Cursor position
|
||
int32_t cursorX, cursorY;
|
||
getCursorPosition(cursorX, cursorY);
|
||
memcpy(&packet[2], &cursorX, sizeof(int32_t));
|
||
memcpy(&packet[2 + sizeof(int32_t)], &cursorY, sizeof(int32_t));
|
||
|
||
// Cursor type
|
||
packet[2 + 2 * sizeof(int32_t)] = getCursorTypeIndex();
|
||
|
||
// H264 data
|
||
memcpy(&packet[headerSize], encodedData, encodedSize);
|
||
|
||
m_client->Send2Server((char*)packet.data(), packet.size());
|
||
}
|
||
|
||
uint32_t ScreenHandler::compareBitmap(const uint8_t* curr, const uint8_t* prev,
|
||
uint8_t* outBuf, uint32_t totalBytes, uint8_t algo)
|
||
{
|
||
const uint32_t bytesPerPixel = 4;
|
||
const uint32_t totalPixels = totalBytes / bytesPerPixel;
|
||
const uint32_t gapThreshold = 8;
|
||
const uint32_t ratio = (algo == ALGORITHM_GRAY || algo == ALGORITHM_RGB565) ? 4 : 1;
|
||
|
||
uint32_t outOffset = 0;
|
||
uint32_t i = 0;
|
||
|
||
while (i < totalPixels) {
|
||
// Skip identical pixels
|
||
while (i < totalPixels &&
|
||
*(uint32_t*)(curr + i * 4) == *(uint32_t*)(prev + i * 4)) {
|
||
i++;
|
||
}
|
||
if (i >= totalPixels) break;
|
||
|
||
uint32_t start = i;
|
||
uint32_t lastDiff = i;
|
||
|
||
while (i < totalPixels) {
|
||
if (*(uint32_t*)(curr + i * 4) != *(uint32_t*)(prev + i * 4)) {
|
||
lastDiff = i;
|
||
} else if (i - lastDiff > gapThreshold) {
|
||
break;
|
||
}
|
||
i++;
|
||
}
|
||
|
||
uint32_t end = lastDiff + 1;
|
||
uint32_t count = end - start;
|
||
uint32_t byteOffset = start * bytesPerPixel;
|
||
uint32_t byteCount = count * bytesPerPixel;
|
||
|
||
// Write byteOffset
|
||
memcpy(outBuf + outOffset, &byteOffset, sizeof(uint32_t));
|
||
outOffset += sizeof(uint32_t);
|
||
|
||
// Write length
|
||
uint32_t lengthField = byteCount / ratio;
|
||
memcpy(outBuf + outOffset, &lengthField, sizeof(uint32_t));
|
||
outOffset += sizeof(uint32_t);
|
||
|
||
// Write pixel data
|
||
const uint8_t* srcData = curr + byteOffset;
|
||
if (algo == ALGORITHM_RGB565) {
|
||
convertBGRAtoRGB565(srcData, (uint16_t*)(outBuf + outOffset), count);
|
||
outOffset += count * 2;
|
||
} else if (algo == ALGORITHM_GRAY) {
|
||
convertBGRAtoGray(srcData, outBuf + outOffset, count);
|
||
outOffset += count;
|
||
} else {
|
||
memcpy(outBuf + outOffset, srcData, byteCount);
|
||
outOffset += byteCount;
|
||
}
|
||
}
|
||
|
||
return outOffset;
|
||
}
|
||
|
||
void ScreenHandler::convertBGRAtoGray(const uint8_t* src, uint8_t* dst, uint32_t pixelCount)
|
||
{
|
||
for (uint32_t i = 0; i < pixelCount; i++) {
|
||
uint8_t b = src[i * 4 + 0];
|
||
uint8_t g = src[i * 4 + 1];
|
||
uint8_t r = src[i * 4 + 2];
|
||
dst[i] = (uint8_t)((306 * r + 601 * g + 117 * b) >> 10);
|
||
}
|
||
}
|
||
|
||
void ScreenHandler::convertBGRAtoRGB565(const uint8_t* src, uint16_t* dst, uint32_t pixelCount)
|
||
{
|
||
for (uint32_t i = 0; i < pixelCount; i++) {
|
||
uint8_t b = src[i * 4 + 0];
|
||
uint8_t g = src[i * 4 + 1];
|
||
uint8_t r = src[i * 4 + 2];
|
||
uint16_t r5 = (r >> 3) & 0x1F;
|
||
uint16_t g6 = (g >> 2) & 0x3F;
|
||
uint16_t b5 = (b >> 3) & 0x1F;
|
||
dst[i] = (r5 << 11) | (g6 << 5) | b5;
|
||
}
|
||
}
|
||
|
||
uint64_t ScreenHandler::getTickMs()
|
||
{
|
||
static mach_timebase_info_data_t timebase = {0, 0};
|
||
if (timebase.denom == 0) {
|
||
mach_timebase_info(&timebase);
|
||
}
|
||
uint64_t now = mach_absolute_time();
|
||
return (now * timebase.numer / timebase.denom) / 1000000;
|
||
}
|
||
|
||
// Cached logical cursor position (shared between getCursorPosition and getCursorTypeIndex)
|
||
static CGPoint s_cachedLogicalPos = {0, 0};
|
||
|
||
void ScreenHandler::getCursorPosition(int32_t& x, int32_t& y)
|
||
{
|
||
// Get cursor position in logical (point) coordinates
|
||
CGEventRef event = CGEventCreate(nullptr);
|
||
s_cachedLogicalPos = CGEventGetLocation(event);
|
||
CFRelease(event);
|
||
|
||
// Convert to physical pixel coordinates (for Retina displays)
|
||
x = (int32_t)(s_cachedLogicalPos.x * m_scaleFactor);
|
||
y = (int32_t)(s_cachedLogicalPos.y * m_scaleFactor);
|
||
|
||
// Clamp to screen bounds
|
||
if (x < 0) x = 0;
|
||
if (y < 0) y = 0;
|
||
if (x >= m_width) x = m_width - 1;
|
||
if (y >= m_height) y = m_height - 1;
|
||
}
|
||
|
||
uint8_t ScreenHandler::getCursorTypeIndex()
|
||
{
|
||
// Windows cursor type indices (from CursorInfo.h):
|
||
// 0: IDC_APPSTARTING, 1: IDC_ARROW, 2: IDC_CROSS, 3: IDC_HAND,
|
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// 4: IDC_HELP, 5: IDC_IBEAM, 6: IDC_ICON, 7: IDC_NO,
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// 8: IDC_SIZE, 9: IDC_SIZEALL, 10: IDC_SIZENESW, 11: IDC_SIZENS,
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// 12: IDC_SIZENWSE, 13: IDC_SIZEWE, 14: IDC_UPARROW, 15: IDC_WAIT
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// NSCursor.currentSystemCursor doesn't work for background daemons.
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// Use Accessibility API to infer cursor type from the UI element under cursor.
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// Throttle to avoid performance impact (check every 100ms)
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static uint8_t cachedIndex = 1;
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static uint64_t lastCheckTime = 0;
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static CGPoint lastPos = {-1, -1};
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// Reuse cursor position from getCursorPosition (called before this)
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CGPoint pos = s_cachedLogicalPos;
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// Throttle: only check if cursor moved significantly or 250ms elapsed
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// (Accessibility API is expensive, cursor type is just a visual hint)
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uint64_t now = getTickMs();
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bool posChanged = (fabs(pos.x - lastPos.x) > 10 || fabs(pos.y - lastPos.y) > 10);
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if (!posChanged && (now - lastCheckTime) < 250) {
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return cachedIndex;
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}
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lastCheckTime = now;
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lastPos = pos;
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uint8_t index = 1; // Default to arrow
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// Get the UI element at cursor position using Accessibility API
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AXUIElementRef systemWide = AXUIElementCreateSystemWide();
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AXUIElementRef element = nullptr;
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AXError err = AXUIElementCopyElementAtPosition(systemWide, (float)pos.x, (float)pos.y, &element);
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CFRelease(systemWide);
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if (err == kAXErrorSuccess && element) {
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// Get the role of the element
|
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CFTypeRef roleRef = nullptr;
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if (AXUIElementCopyAttributeValue(element, kAXRoleAttribute, &roleRef) == kAXErrorSuccess && roleRef) {
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NSString* role = (__bridge NSString*)roleRef;
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// Map UI element roles to cursor types
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if ([role isEqualToString:NSAccessibilityTextFieldRole] ||
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[role isEqualToString:NSAccessibilityTextAreaRole] ||
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[role isEqualToString:NSAccessibilityStaticTextRole] ||
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[role isEqualToString:@"AXWebArea"]) {
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// Check if text is editable
|
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CFTypeRef editableRef = nullptr;
|
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if (AXUIElementCopyAttributeValue(element, CFSTR("AXEditable"), &editableRef) == kAXErrorSuccess) {
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if (editableRef && CFBooleanGetValue((CFBooleanRef)editableRef)) {
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index = 5; // IDC_IBEAM for editable text
|
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}
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if (editableRef) CFRelease(editableRef);
|
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} else if ([role isEqualToString:NSAccessibilityTextFieldRole] ||
|
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[role isEqualToString:NSAccessibilityTextAreaRole]) {
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index = 5; // IDC_IBEAM for text input fields
|
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}
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} else if ([role isEqualToString:NSAccessibilityLinkRole] ||
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[role isEqualToString:@"AXLink"]) {
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index = 3; // IDC_HAND for links
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} else if ([role isEqualToString:NSAccessibilityButtonRole]) {
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index = 3; // IDC_HAND for buttons (clickable)
|
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} else if ([role isEqualToString:NSAccessibilitySplitterRole] ||
|
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[role isEqualToString:@"AXSplitGroup"]) {
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// Check orientation for resize cursor
|
||
CFTypeRef orientRef = nullptr;
|
||
if (AXUIElementCopyAttributeValue(element, CFSTR("AXOrientation"), &orientRef) == kAXErrorSuccess && orientRef) {
|
||
NSString* orient = (__bridge NSString*)orientRef;
|
||
if ([orient isEqualToString:@"AXHorizontalOrientation"]) {
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||
index = 11; // IDC_SIZENS (vertical resize)
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} else {
|
||
index = 13; // IDC_SIZEWE (horizontal resize)
|
||
}
|
||
CFRelease(orientRef);
|
||
} else {
|
||
index = 13; // IDC_SIZEWE default for splitters
|
||
}
|
||
} else if ([role isEqualToString:NSAccessibilityGrowAreaRole]) {
|
||
index = 12; // IDC_SIZENWSE for resize corners
|
||
}
|
||
|
||
CFRelease(roleRef);
|
||
}
|
||
CFRelease(element);
|
||
}
|
||
|
||
// Cache the result
|
||
cachedIndex = index;
|
||
return index;
|
||
}
|
||
|
||
void ScreenHandler::captureLoop()
|
||
{
|
||
NSLog(@"ScreenHandler CaptureLoop started (%dx%d)%s", m_width, m_height,
|
||
m_displayStream ? " [CGDisplayStream]" : " [Legacy]");
|
||
|
||
uint8_t currentAlgo = m_algorithm.load();
|
||
|
||
// Always send raw first frame (TOKEN_FIRSTSCREEN) to initialize server display
|
||
sendFirstScreen();
|
||
|
||
// Small delay to ensure first frame is processed before H264 stream starts
|
||
usleep(50000); // 50ms, same as Windows client
|
||
|
||
while (m_running) {
|
||
uint64_t start = getTickMs();
|
||
|
||
// Wait for new frame from display stream (push model)
|
||
// This is key optimization: CPU sleeps when screen is static
|
||
if (m_displayStream) {
|
||
std::unique_lock<std::mutex> lock(m_surfaceMutex);
|
||
int fps = m_maxFPS.load();
|
||
if (fps <= 0) fps = 15;
|
||
int waitMs = 1000 / fps;
|
||
|
||
// Wait for new frame or timeout (maintains FPS even if no change)
|
||
m_surfaceCond.wait_for(lock, std::chrono::milliseconds(waitMs), [this] {
|
||
return m_hasNewFrame.load() || !m_running;
|
||
});
|
||
m_hasNewFrame.store(false);
|
||
|
||
if (!m_running) break;
|
||
}
|
||
|
||
uint8_t algo = m_algorithm.load();
|
||
|
||
// Check if algorithm changed
|
||
if (algo != currentAlgo) {
|
||
NSLog(@"Algorithm changed: %d -> %d", currentAlgo, algo);
|
||
currentAlgo = algo;
|
||
|
||
if (algo == ALGORITHM_H264) {
|
||
sendH264Frame(true); // First H264 frame is keyframe
|
||
} else if (m_h264Encoder) {
|
||
m_h264Encoder->close();
|
||
m_h264Encoder.reset();
|
||
sendFirstScreen();
|
||
}
|
||
} else {
|
||
if (algo == ALGORITHM_H264) {
|
||
sendH264Frame(false);
|
||
} else {
|
||
sendDiffFrame();
|
||
}
|
||
}
|
||
|
||
// Only use sleep-based FPS control for legacy mode
|
||
if (!m_displayStream) {
|
||
int fps = m_maxFPS.load();
|
||
if (fps <= 0) fps = 10;
|
||
int sleepMs = 1000 / fps;
|
||
|
||
int elapsed = (int)(getTickMs() - start);
|
||
int wait = sleepMs - elapsed;
|
||
if (wait > 0) {
|
||
usleep(wait * 1000);
|
||
}
|
||
}
|
||
}
|
||
|
||
NSLog(@"ScreenHandler CaptureLoop stopped");
|
||
}
|