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#include <arpa/inet.h>
#include <QHostInfo>
// hyperion local includes
#include "LedDeviceUdpE131.h"
LedDeviceUdpE131::LedDeviceUdpE131(const QJsonObject &deviceConfig)
: ProviderUdp()
{
_deviceReady = init(deviceConfig);
}
bool LedDeviceUdpE131::init(const QJsonObject &deviceConfig)
{
_port = 5568;
ProviderUdp::init(deviceConfig);
_e131_universe = deviceConfig["universe"].toInt(1);
_e131_source_name = deviceConfig["source-name"].toString("hyperion on "+QHostInfo::localHostName());
QString _json_cid = deviceConfig["cid"].toString("");
if (_json_cid.isEmpty())
{
_e131_cid = QUuid::createUuid();
Debug( _log, "e131 no cid found, generated %s", QSTRING_CSTR(_e131_cid.toString()));
} else {
_e131_cid = QUuid(_json_cid);
Debug( _log, "e131 cid found, using %s", QSTRING_CSTR(_e131_cid.toString()));
}
return true;
}
LedDevice* LedDeviceUdpE131::construct(const QJsonObject &deviceConfig)
{
return new LedDeviceUdpE131(deviceConfig);
}
// populates the headers
void LedDeviceUdpE131::prepare(const unsigned this_universe, const unsigned this_dmxChannelCount)
{
memset(e131_packet.raw, 0, sizeof(e131_packet.raw));
/* Root Layer */
e131_packet.preamble_size = htons(16);
e131_packet.postamble_size = 0;
memcpy (e131_packet.acn_id, _acn_id, 12);
e131_packet.root_flength = htons(0x7000 | (110+this_dmxChannelCount) );
e131_packet.root_vector = htonl(VECTOR_ROOT_E131_DATA);
memcpy (e131_packet.cid, _e131_cid.toRfc4122().constData() , sizeof(e131_packet.cid) );
/* Frame Layer */
e131_packet.frame_flength = htons(0x7000 | (88+this_dmxChannelCount));
e131_packet.frame_vector = htonl(VECTOR_E131_DATA_PACKET);
snprintf (e131_packet.source_name, sizeof(e131_packet.source_name), "%s", QSTRING_CSTR(_e131_source_name) );
e131_packet.priority = 100;
e131_packet.reserved = htons(0);
e131_packet.options = 0; // Bit 7 = Preview_Data
// Bit 6 = Stream_Terminated
// Bit 5 = Force_Synchronization
e131_packet.universe = htons(this_universe);
/* DMX Layer */
e131_packet.dmp_flength = htons(0x7000 | (11+this_dmxChannelCount));
e131_packet.dmp_vector = VECTOR_DMP_SET_PROPERTY;
e131_packet.type = 0xa1;
e131_packet.first_address = htons(0);
e131_packet.address_increment = htons(1);
e131_packet.property_value_count = htons(1+this_dmxChannelCount);
e131_packet.property_values[0] = 0; // start code
}
int LedDeviceUdpE131::write(const std::vector<ColorRgb> &ledValues)
{
int retVal = 0;
int thisChannelCount = 0;
int dmxChannelCount = _ledRGBCount;
const uint8_t * rawdata = reinterpret_cast<const uint8_t *>(ledValues.data());
_e131_seq++;
for (int rawIdx = 0; rawIdx < dmxChannelCount; rawIdx++)
{
if (rawIdx % DMX_MAX == 0) // start of new packet
{
thisChannelCount = (dmxChannelCount - rawIdx < DMX_MAX) ? dmxChannelCount % DMX_MAX : DMX_MAX;
// is this the last packet? ? ^^ last packet : ^^ earlier packets
prepare(_e131_universe + rawIdx / DMX_MAX, thisChannelCount);
e131_packet.sequence_number = _e131_seq;
}
e131_packet.property_values[1 + rawIdx%DMX_MAX] = rawdata[rawIdx];
// is this the last byte of last packet || last byte of other packets
if ( (rawIdx == dmxChannelCount-1) || (rawIdx %DMX_MAX == DMX_MAX-1) )
{
#undef e131debug
#if e131debug
Debug (_log, "send packet: rawidx %d dmxchannelcount %d universe: %d, packetsz %d"
, rawIdx
, dmxChannelCount
, _e131_universe + rawIdx / DMX_MAX
, E131_DMP_DATA + 1 + thisChannelCount
);
#endif
retVal &= writeBytes(E131_DMP_DATA + 1 + thisChannelCount, e131_packet.raw);
}
}
return retVal;
}