diff --git a/X. NU/custom/drivers/AppleJPEGDriver_method_1.cpp b/X. NU/custom/drivers/AppleJPEGDriver_method_1.cpp index fb9b98b..b547437 100644 --- a/X. NU/custom/drivers/AppleJPEGDriver_method_1.cpp +++ b/X. NU/custom/drivers/AppleJPEGDriver_method_1.cpp @@ -1,106 +1,166 @@ +// Compile command: // clang++ -framework IOKit -framework CoreFoundation -framework IOSurface AppleJPEGDriver_method_1.cpp -o AppleJPEGDriver_method_1 + #include #include +#include #include #include /** * Creates an IOSurface with JPEG format specifications * IOSurface is a memory buffer that can be shared between processes and hardware - * @return The unique identifier of the created surface + * + * @details This function sets up an IOSurface with specific parameters: + * - 32x32 pixel dimensions + * - 0x10000 bytes allocation size + * - JPEG format specification + * - Global sharing enabled + * + * @return The unique identifier of the created surface, or 0 on failure */ static uint32_t create_surface(void) { // Create a mutable dictionary to hold surface properties CFMutableDictionaryRef dict = CFDictionaryCreateMutable(NULL, 0, &kCFTypeDictionaryKeyCallBacks, &kCFTypeDictionaryValueCallBacks); - // Define basic surface properties - // These values are minimal requirements for JPEG processing - int width = 32, height = 32; // Dimensions of the surface - int size = 32768; // Buffer size in bytes - int format = 'JPEG'; // Surface pixel format + if (!dict) return 0; - // Set required surface properties in the dictionary - // IOSurfaceIsGlobal: Makes surface accessible system-wide + // Define surface parameters + int width = 32; + int height = 32; + int alloc_size = 0x10000; + int format = 'JPEG'; // Using JPEG format identifier + + // Set surface as globally accessible CFDictionarySetValue(dict, CFSTR("IOSurfaceIsGlobal"), kCFBooleanTrue); - // Set surface dimensions - CFDictionarySetValue(dict, CFSTR("IOSurfaceWidth"), - CFNumberCreate(NULL, kCFNumberSInt32Type, &width)); - CFDictionarySetValue(dict, CFSTR("IOSurfaceHeight"), - CFNumberCreate(NULL, kCFNumberSInt32Type, &height)); - // Set buffer size - CFDictionarySetValue(dict, CFSTR("IOSurfaceAllocSize"), - CFNumberCreate(NULL, kCFNumberSInt32Type, &size)); - // Set pixel format - CFDictionarySetValue(dict, CFSTR("IOSurfacePixelFormat"), - CFNumberCreate(NULL, kCFNumberSInt32Type, &format)); - // Create the surface and get its ID + // Create CF numbers for surface properties + CFNumberRef w = CFNumberCreate(NULL, kCFNumberSInt32Type, &width); + CFNumberRef h = CFNumberCreate(NULL, kCFNumberSInt32Type, &height); + CFNumberRef s = CFNumberCreate(NULL, kCFNumberSInt32Type, &alloc_size); + CFNumberRef f = CFNumberCreate(NULL, kCFNumberSInt32Type, &format); + + // Set surface properties in dictionary + CFDictionarySetValue(dict, CFSTR("IOSurfaceWidth"), w); + CFDictionarySetValue(dict, CFSTR("IOSurfaceHeight"), h); + CFDictionarySetValue(dict, CFSTR("IOSurfaceAllocSize"), s); + CFDictionarySetValue(dict, CFSTR("IOSurfacePixelFormat"), f); + + // Create the surface with our specifications IOSurfaceRef surface = IOSurfaceCreate(dict); + if (!surface) { + CFRelease(w); CFRelease(h); CFRelease(s); CFRelease(f); CFRelease(dict); + return 0; + } + + // Get surface ID and retain the surface uint32_t id = IOSurfaceGetID(surface); - CFRelease(dict); // Clean up the dictionary + CFRetain(surface); + + // Clean up allocated resources + CFRelease(w); CFRelease(h); CFRelease(s); CFRelease(f); CFRelease(dict); return id; } /** * Input structure for the AppleJPEGDriver * This structure defines the parameters needed for JPEG processing operations - * Total size: 88 bytes + * + * @note Structure must be exactly 88 bytes (0x58) in size + * @note Fields marked as reserved should not be modified */ struct AppleJPEGDriverIOStruct { - uint32_t src_surface; // Source IOSurface ID - uint32_t input_size; // Size of input buffer - uint32_t dst_surface; // Destination IOSurface ID + uint32_t src_surface; // Source surface ID + uint32_t input_size; // Size of input data + uint32_t dst_surface; // Destination surface ID uint32_t output_size; // Size of output buffer - uint32_t reserved1[2]; // Reserved fields - uint32_t pixelX; // X dimension in pixels - uint32_t pixelY; // Y dimension in pixels + uint32_t reserved1[2]; // Reserved fields (previously input/output length) + uint32_t pixelX; // X dimension in pixels + uint32_t pixelY; // Y dimension in pixels uint32_t reserved2; // Reserved field - uint32_t xOffset; // X offset for processing - uint32_t yOffset; // Y offset for processing - uint32_t subsampling; // Subsampling mode - uint32_t callback; // Callback function pointer + uint32_t xOffset; // X offset for processing + uint32_t yOffset; // Y offset for processing + uint32_t subsampling; // Subsampling mode (must be 0-4) + uint32_t callback; // Callback address uint32_t reserved3[3]; // Reserved fields - uint32_t value100; // Configuration value + uint32_t value100; // Value set to 100 uint32_t reserved4[2]; // Reserved fields - uint32_t decodeWidth; // Width for decoding - uint32_t decodeHeight; // Height for decoding + uint32_t decodeWidth; // Width for decoding + uint32_t decodeHeight; // Height for decoding uint32_t reserved5; // Reserved field -} __attribute__((packed)); // Ensure tight packing of structure +} __attribute__((packed)); int main() { - // Create two IOSurfaces: one for input, one for output + // Create source and destination surfaces uint32_t src = create_surface(); uint32_t dst = create_surface(); - // Establish connection with AppleJPEGDriver + // Connect to the AppleJPEGDriver io_connect_t conn; - IOServiceOpen(IOServiceGetMatchingService(kIOMainPortDefault, - IOServiceMatching("AppleJPEGDriver")), mach_task_self(), 1, &conn); + io_service_t service = IOServiceGetMatchingService(kIOMainPortDefault, + IOServiceMatching("AppleJPEGDriver")); + if (!service) { + printf("Driver not found\n"); + return 1; + } - // Initialize the driver input structure with desired parameters - struct AppleJPEGDriverIOStruct input = { - .src_surface = src, // Source surface ID - .dst_surface = dst, // Destination surface ID - .input_size = 2000, // Input buffer size - .output_size = 0x1000, // Output buffer size - .pixelX = 100, // X dimension - .pixelY = 3, // Y dimension - .xOffset = 0xd, // X offset - .yOffset = 0xff, // Y offset - .value100 = 100, // Configuration value - .decodeWidth = 5, // Decode width - .decodeHeight = 10 // Decode height - }; + // Open a connection to the driver + kern_return_t kr = IOServiceOpen(service, mach_task_self(), 1, &conn); + if (kr != KERN_SUCCESS) { + printf("Open failed: %x\n", kr); + return 1; + } - // Prepare output buffer for driver response - char output[65536]; + // Initialize driver input structure + struct AppleJPEGDriverIOStruct input = {}; + memset(&input, 0, sizeof(input)); + + // Configure input parameters + input.src_surface = src; + input.input_size = 2000; + input.dst_surface = dst; + input.output_size = 0x1000; + input.pixelX = 100; + input.pixelY = 3; + input.xOffset = 0xd; + input.yOffset = 0xff; + input.subsampling = 0; + input.callback = 0x41414141; + input.value100 = 100; + input.decodeWidth = 5; + input.decodeHeight = 10; + + // Verify structure size and print configuration + printf("Structure size: %zu (should be 88)\n", sizeof(input)); + printf("Surface IDs: src=0x%x dst=0x%x\n", src, dst); + printf("Input params:\n" + " sizes: %u/%u\n" + " pixels: %u/%u\n" + " decode: %u/%u\n" + " offset: %u/%u\n", + input.input_size, input.output_size, + input.pixelX, input.pixelY, + input.decodeWidth, input.decodeHeight, + input.xOffset, input.yOffset); + + // Prepare output buffer and call driver + char output[88] = {0}; size_t output_size = sizeof(output); + // Call IOKit method #1 on the connection, passing input/output buffers + // kr: stores kernel return code (KERN_SUCCESS = 0 on success) + // conn: connection to IOKit driver/service + // 1: selector/method number to call + // &input: pointer to input structure + // sizeof(input): size of input buffer in bytes + // output: buffer to receive output data + // &output_size: pointer to size of output buffer (updated with actual bytes written) + kr = IOConnectCallStructMethod(conn, 1, &input, sizeof(input), output, &output_size); - // Call the driver's method 1 with our input structure - kern_return_t kr = IOConnectCallStructMethod(conn, 1, &input, - sizeof(input), output, &output_size); - - // Print the result of the operation + // Print result and clean up printf("Result: 0x%x (%s)\n", kr, mach_error_string(kr)); + + IOServiceClose(conn); + IOObjectRelease(service); + return 0; } \ No newline at end of file