119 lines
3.6 KiB
C++
119 lines
3.6 KiB
C++
#include <arpa/inet.h>
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#include <QHostInfo>
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// hyperion local includes
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#include "LedDeviceUdpE131.h"
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LedDeviceUdpE131::LedDeviceUdpE131(const QJsonObject &deviceConfig)
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: ProviderUdp()
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{
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_devConfig = deviceConfig;
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_deviceReady = false;
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}
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bool LedDeviceUdpE131::init(const QJsonObject &deviceConfig)
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{
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_port = E131_DEFAULT_PORT;
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bool isInitOK = ProviderUdp::init(deviceConfig);
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if ( isInitOK )
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{
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_e131_universe = deviceConfig["universe"].toInt(1);
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_e131_source_name = deviceConfig["source-name"].toString("hyperion on "+QHostInfo::localHostName());
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QString _json_cid = deviceConfig["cid"].toString("");
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if (_json_cid.isEmpty())
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{
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_e131_cid = QUuid::createUuid();
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Debug( _log, "e131 no cid found, generated %s", QSTRING_CSTR(_e131_cid.toString()));
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}
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else
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{
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_e131_cid = QUuid(_json_cid);
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Debug( _log, "e131 cid found, using %s", QSTRING_CSTR(_e131_cid.toString()));
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}
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}
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return isInitOK;
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}
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LedDevice* LedDeviceUdpE131::construct(const QJsonObject &deviceConfig)
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{
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return new LedDeviceUdpE131(deviceConfig);
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}
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// populates the headers
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void LedDeviceUdpE131::prepare(const unsigned this_universe, const unsigned this_dmxChannelCount)
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{
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memset(e131_packet.raw, 0, sizeof(e131_packet.raw));
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/* Root Layer */
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e131_packet.preamble_size = htons(16);
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e131_packet.postamble_size = 0;
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memcpy (e131_packet.acn_id, _acn_id, 12);
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e131_packet.root_flength = htons(0x7000 | (110+this_dmxChannelCount) );
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e131_packet.root_vector = htonl(VECTOR_ROOT_E131_DATA);
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memcpy (e131_packet.cid, _e131_cid.toRfc4122().constData() , sizeof(e131_packet.cid) );
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/* Frame Layer */
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e131_packet.frame_flength = htons(0x7000 | (88+this_dmxChannelCount));
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e131_packet.frame_vector = htonl(VECTOR_E131_DATA_PACKET);
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snprintf (e131_packet.source_name, sizeof(e131_packet.source_name), "%s", QSTRING_CSTR(_e131_source_name) );
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e131_packet.priority = 100;
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e131_packet.reserved = htons(0);
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e131_packet.options = 0; // Bit 7 = Preview_Data
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// Bit 6 = Stream_Terminated
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// Bit 5 = Force_Synchronization
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e131_packet.universe = htons(this_universe);
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/* DMX Layer */
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e131_packet.dmp_flength = htons(0x7000 | (11+this_dmxChannelCount));
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e131_packet.dmp_vector = VECTOR_DMP_SET_PROPERTY;
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e131_packet.type = 0xa1;
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e131_packet.first_address = htons(0);
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e131_packet.address_increment = htons(1);
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e131_packet.property_value_count = htons(1+this_dmxChannelCount);
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e131_packet.property_values[0] = 0; // start code
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}
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int LedDeviceUdpE131::write(const std::vector<ColorRgb> &ledValues)
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{
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int retVal = 0;
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int thisChannelCount = 0;
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int dmxChannelCount = _ledRGBCount;
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const uint8_t * rawdata = reinterpret_cast<const uint8_t *>(ledValues.data());
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_e131_seq++;
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for (int rawIdx = 0; rawIdx < dmxChannelCount; rawIdx++)
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{
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if (rawIdx % DMX_MAX == 0) // start of new packet
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{
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thisChannelCount = (dmxChannelCount - rawIdx < DMX_MAX) ? dmxChannelCount % DMX_MAX : DMX_MAX;
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// is this the last packet? ? ^^ last packet : ^^ earlier packets
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prepare(_e131_universe + rawIdx / DMX_MAX, thisChannelCount);
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e131_packet.sequence_number = _e131_seq;
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}
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e131_packet.property_values[1 + rawIdx%DMX_MAX] = rawdata[rawIdx];
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// is this the last byte of last packet || last byte of other packets
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if ( (rawIdx == dmxChannelCount-1) || (rawIdx %DMX_MAX == DMX_MAX-1) )
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{
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#undef e131debug
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#if e131debug
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Debug (_log, "send packet: rawidx %d dmxchannelcount %d universe: %d, packetsz %d"
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, rawIdx
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, dmxChannelCount
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, _e131_universe + rawIdx / DMX_MAX
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, E131_DMP_DATA + 1 + thisChannelCount
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);
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#endif
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retVal &= writeBytes(E131_DMP_DATA + 1 + thisChannelCount, e131_packet.raw);
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}
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}
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return retVal;
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}
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