C ++ fread和python实现中的不同行为

Question

我正在尝试在python中实现以下c ++代码。但是，当我打印出来时，两者的数据有所不同。我阅读了这篇文章Receiving 16-bit integers in Python，并尝试了“> h”和“

int16_t* loadDepthImageCompressed( const char* fname ){

//now read the depth image
FILE* pFile = fopen(fname, "rb");
if(!pFile){
    std::cerr << "could not open file " << fname << std::endl;
    return NULL;
}

int im_width = 0;
int im_height = 0;
bool success = true;

std::cout << sizeof(int) << std::endl;
std::cout << sizeof(int16_t) << std::endl;

success &= ( fread(&im_width,sizeof(int),1,pFile) == 1 ); // read width of depthmap
success &= ( fread(&im_height,sizeof(int),1,pFile) == 1 ); // read height of depthmap

int16_t* depth_img = new int16_t[im_width*im_height];

std::cout << im_width << std::endl;
std::cout << im_height << std::endl;

int numempty;
int numfull;
int p = 0;

while(p < im_width*im_height ){

    success &= ( fread( &numempty,sizeof(int),1,pFile) == 1 );

    for(int i = 0; i < numempty; i++)
        depth_img[ p + i ] = 0;

    success &= ( fread( &numfull,sizeof(int), 1, pFile) == 1 );
    success &= ( fread( &depth_img[ p + numempty ], sizeof(int16_t), numfull, pFile) == (unsigned int) numfull );
    p += numempty+numfull;

}

fclose(pFile);

if(success)
    return depth_img;
else{
    delete [] depth_img;
    return NULL;
}
}

python代码

def loadDepthImageCompressed(fname):

    with open(fname,'rb') as depth_file:

        im_width = struct.unpack('i',depth_file.read(4))[0]
        im_height = struct.unpack('i',depth_file.read(4))[0]

        depth_img = [None] * (im_width * im_height)
        p = 0
        while(p < im_width * im_height):
            numempty = struct.unpack('i',depth_file.read(4))[0]
            for i in range(numempty):
                depth_img[p + i] = 0;
            numfull = struct.unpack('i',depth_file.read(4))[0]

            for i in range(numfull):
                depth_img[p+numempty + i] = struct.unpack('>h',depth_file.read(2))[0]

            p += numempty+numfull

    return depth_img