NSData to NSArray of UInt16 in Objective C

Question

Need Alternative to the below Swift code in Objective-C

let arr = data.withUnsafeBytes {
            Array(UnsafeBufferPointer<UInt16>(start: $0, count: data.count/MemoryLayout<UInt16>.stride))
}

Thanks for your help, the below answer helped, had to do this in C++ as was working on tensorflow-lite pre-processing.

UInt16 *adr = (UInt16 *)data.bytes;

uint16_t req_arr[data.length/sizeof(UInt16)];

for (int i = 0; i<data.length/sizeof(UInt16); ++i) {
    uint16_t num16 = *adr%UINT16_MAX;
    ++adr;
    your_arr[i] = num16;
}

Answer 1

You can't get NSArray with UInt16 elements because NSArray can contain only NSObjects, so you have to wrap UInt16 to NSNumber or use some other container (for example, simple c array). The closest code will be something like this:

// Just preparing some test data
NSMutableData *data = [NSMutableData new];
for (int i = 0; i<10; ++i){
    UInt16 u = (UInt16) arc4random()%UINT16_MAX;
    NSLog(@"%d",u);
    [data appendBytes:&u length:sizeof(u)];
}

// the main code
UInt16 *adr = (UInt16 *)data.bytes;
NSMutableArray *arr = [NSMutableArray new];
for (int i = 0; i<data.length/sizeof(UInt16); ++i) {
    NSNumber *num = [NSNumber numberWithUnsignedShort:*adr];
    ++adr;
    [arr addObject:num];
}