/*
* Calculate the checksum for a packet, and verify
*/
void RDMCommandTest::PackAndVerify(const RDMCommand &command,
const uint8_t *expected,
unsigned int expected_length) {
// now check packing
unsigned int buffer_size = command.Size();
uint8_t *buffer = new uint8_t[buffer_size];
CPPUNIT_ASSERT(command.Pack(buffer, &buffer_size));
for (unsigned int i = 0 ; i < expected_length; i++) {
std::stringstream str;
str << "Offset " << i << ", expected " << static_cast<int>(expected[i]) <<
", got " << static_cast<int>(buffer[i]);
CPPUNIT_ASSERT_MESSAGE(str.str(), buffer[i] == expected[i]);
}
delete[] buffer;
// now check string packing
string str_buffer;
CPPUNIT_ASSERT(command.Pack(&str_buffer));
CPPUNIT_ASSERT_EQUAL((size_t) expected_length, str_buffer.size());
for (unsigned int i = 0 ; i < expected_length; i++) {
std::stringstream str;
uint8_t c = str_buffer[i];
str << "Offset " << i << ", expected " << std::hex <<
static_cast<int>(expected[i]) << ", got " << std::hex <<
static_cast<int>(c);
CPPUNIT_ASSERT_MESSAGE(str.str(), c == expected[i]);
}
}
bool RDMCommand::operator==(const RDMCommand &other) const {
if (SourceUID() == other.SourceUID() &&
DestinationUID() == other.DestinationUID() &&
TransactionNumber() == other.TransactionNumber() &&
MessageCount() == other.MessageCount() &&
SubDevice() == other.SubDevice() &&
CommandClass() == other.CommandClass() &&
ParamId() == other.ParamId() &&
ParamDataSize() == other.ParamDataSize()) {
return 0 == memcmp(ParamData(), other.ParamData(), ParamDataSize());
}
return false;
}
/**
* Populate the RDMCommandHeader struct.
* @param header a pointer to the RDMCommandHeader to populate
* @param command the RDMCommand to use
* @param the length of the packet excluding the start code.
* @param source the source UID.
* @param transaction_number the RDM transaction number
* @param port_id the RDM port id
*/
void RDMCommandSerializer::PopulateHeader(RDMCommandHeader *header,
const RDMCommand &command,
unsigned int packet_length,
const UID &source,
uint8_t transaction_number,
uint8_t port_id) {
// ignore the checksum length for now
packet_length -= CHECKSUM_LENGTH;
header->sub_start_code = SUB_START_CODE;
header->message_length = packet_length + 1; // add in start code as well
command.DestinationUID().Pack(header->destination_uid, UID::UID_SIZE);
source.Pack(header->source_uid, UID::UID_SIZE);
header->transaction_number = transaction_number;
header->port_id = port_id;
header->message_count = command.MessageCount();
header->sub_device[0] = command.SubDevice() >> 8;
header->sub_device[1] = command.SubDevice() & 0xff;
header->command_class = command.CommandClass();
header->param_id[0] = command.ParamId() >> 8;
header->param_id[1] = command.ParamId() & 0xff;
header->param_data_length = command.ParamDataSize();
}
