igtl_uint64 generate_image_body(image_message_body * body)
{
igtl_uint64 image_size;
igtl_float32 spacing[] = {1.0f, 1.0f, 1.0f};
igtl_float32 origin[] = {46.0531f, 19.4709f, 46.0531f};
igtl_float32 norm_i[] = {-0.954892f, 0.196632f, -0.222525f};
igtl_float32 norm_j[] = {-0.196632f, 0.142857f, 0.970014f};
igtl_float32 norm_k[] = {0.222525f, 0.970014f, -0.0977491f};
/* Set data */
body->iheader.version = 1;
body->iheader.num_components = 1; /* Scalar */
body->iheader.scalar_type = 3; /* uint8 */
body->iheader.endian = 2; /* Little endian */
body->iheader.coord = 1; /* RAS */
body->iheader.size[0] = 50;
body->iheader.size[1] = 50;
body->iheader.size[2] = 1;
/* Dimensions */
body->iheader.subvol_offset[0] = 0;
body->iheader.subvol_offset[1] = 0;
body->iheader.subvol_offset[2] = 0;
body->iheader.subvol_size[0] = 50;
body->iheader.subvol_size[1] = 50;
body->iheader.subvol_size[2] = 1;
igtl_image_set_matrix(spacing, origin, norm_i, norm_j, norm_k, &(body->iheader));
/* Copy image data */
memcpy((void*)body->image, (void*)test_image, TEST_IMAGE_MESSAGE_SIZE);
/* Get image data size -- note that this should be done before byte order swapping. */
image_size = igtl_image_get_data_size(&(body->iheader));
/* Swap byte order if necessary */
igtl_image_convert_byte_order(&(body->iheader));
return image_size;
}
int main( int argc, char * argv [] )
{
struct image_message message;
int r;
igtl_uint64 image_size;
int s;
igtl_float32 spacing[] = {1.0f, 1.0f, 1.0f};
igtl_float32 origin[] = {46.0531f, 19.4709f, 46.0531f};
igtl_float32 norm_i[] = {-0.954892f, 0.196632f, -0.222525f};
igtl_float32 norm_j[] = {-0.196632f, 0.142857f, 0.970014f};
igtl_float32 norm_k[] = {0.222525f, 0.970014f, -0.0977491f};
/* Test structure size */
if (sizeof(message) != IGTL_HEADER_SIZE+IGTL_IMAGE_HEADER_SIZE+TEST_IMAGE_MESSAGE_SIZE)
{
fprintf(stdout, "Invalid size of image message structure.\n");
return EXIT_FAILURE;
}
/* Set data */
message.iheader.version = 1;
message.iheader.num_components = 1; /* Scalar */
message.iheader.scalar_type = 3; /* uint8 */
message.iheader.endian = 2; /* Little endian */
message.iheader.coord = 1; /* RAS */
message.iheader.size[0] = 50;
message.iheader.size[1] = 50;
message.iheader.size[2] = 1;
/* Dimensions */
message.iheader.subvol_offset[0] = 0;
message.iheader.subvol_offset[1] = 0;
message.iheader.subvol_offset[2] = 0;
message.iheader.subvol_size[0] = 50;
message.iheader.subvol_size[1] = 50;
message.iheader.subvol_size[2] = 1;
igtl_image_set_matrix(spacing, origin, norm_i, norm_j, norm_k, &(message.iheader));
/* Copy image data */
memcpy((void*)message.image, (void*)test_image, TEST_IMAGE_MESSAGE_SIZE);
/* Get image data size -- note that this should be done before byte order swapping. */
image_size = igtl_image_get_data_size(&(message.iheader));
/* Swap byte order if necessary */
igtl_image_convert_byte_order(&(message.iheader));
/* Create OpenIGTLink header */
message.header.version = 1;
strncpy( (char*)&(message.header.name), "IMAGE", 12 );
strncpy( (char*)&(message.header.device_name), "DeviceName", 20 );
message.header.timestamp = 1234567892;
message.header.body_size = IGTL_IMAGE_HEADER_SIZE + image_size;
message.header.crc = igtl_image_get_crc(&(message.iheader), message.image);
igtl_header_convert_byte_order( &(message.header) );
/* Dumping data -- for debugging */
/*
FILE *fp;
fp = fopen("image.bin", "w");
fwrite(&(message), IGTL_HEADER_SIZE+IGTL_IMAGE_HEADER_SIZE+image_size, 1, fp);
fclose(fp);
*/
/* Compare the serialized byte array with the gold standard */
r = memcmp((const void*)&message, (const void*)test_image_message,
(size_t)(IGTL_HEADER_SIZE+IGTL_IMAGE_HEADER_SIZE+image_size));
if (r == 0)
{
return EXIT_SUCCESS;
}
else
{
/* Print first 256 bytes as HEX values in STDERR for debug */
s = IGTL_HEADER_SIZE+IGTL_IMAGE_HEADER_SIZE+ (int)image_size;
if (s > 256)
{
s = 256;
}
fprintf(stdout, "\n===== First %d bytes of the test message =====\n", s);
igtl_message_dump_hex(stdout, (const void*)&message, s);
return EXIT_FAILURE;
}
}