mirror of
https://github.com/hyperion-project/hyperion.ng.git
synced 2023-10-10 13:36:59 +02:00
85e3f154d6
* Started on support for sACN/E1.31/DMX512 Just a clone of udpraw for now * It's ALIVE!! This adds somewhat working DMX512/sACN/E1.31 support. I've tested it against an ESPixelStick but have no other "real" hardware TODO: configure universe# configure universe and led offset configure source names (all hard coded now...) * oops.... forgot that dmx element 0 isnt rgb data but needs to be zero * added universe support in the config assorted code cleanups
78 lines
2.3 KiB
C++
78 lines
2.3 KiB
C++
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// STL includes
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#include <cstring>
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#include <cstdio>
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#include <iostream>
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// Linux includes
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#include <fcntl.h>
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#include <sys/ioctl.h>
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#include <arpa/inet.h>
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// hyperion local includes
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#include "LedDeviceUdpE131.h"
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LedDeviceUdpE131::LedDeviceUdpE131(const std::string& outputDevice, const unsigned latchTime, const unsigned universe)
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: LedUdpDevice(outputDevice, latchTime)
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, _e131_universe(universe)
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{
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// empty
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}
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#define CID "hyperion!\0"
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#define SOURCE_NAME "hyperion on hostname\0"
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int LedDeviceUdpE131::write(const std::vector<ColorRgb> &ledValues)
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{
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_ledCount = ledValues.size();
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int _dmxChannelCount = 3 * std::min(_ledCount,170); // DMX512 has max 512 channels == 170 RGB leds
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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+_dmxChannelCount) );
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e131_packet.root_vector = htonl(VECTOR_ROOT_E131_DATA);
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memcpy (e131_packet.cid, CID, sizeof(CID) );
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/* Frame Layer */
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e131_packet.frame_flength = htons(0x7000 | (88+_dmxChannelCount));
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e131_packet.frame_vector = htonl(VECTOR_E131_DATA_PACKET);
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memcpy (e131_packet.source_name, SOURCE_NAME, sizeof(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.sequence_number = _e131_seq++;
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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(_e131_universe);
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/* DMX Layer */
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e131_packet.dmp_flength = htons(0x7000 | (11+_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+_dmxChannelCount);
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int led_idx=0;
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e131_packet.property_values[0] = 0; // start code
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for (int _dmxIdx=1; _dmxIdx <= _dmxChannelCount; )
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{
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e131_packet.property_values[_dmxIdx++] = ledValues[led_idx].red;
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e131_packet.property_values[_dmxIdx++] = ledValues[led_idx].green;
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e131_packet.property_values[_dmxIdx++] = ledValues[led_idx].blue;
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led_idx ++;
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}
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return writeBytes(E131_DMP_DATA + 1 + _dmxChannelCount, e131_packet.raw);
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}
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int LedDeviceUdpE131::switchOff()
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{
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return write(std::vector<ColorRgb>(_ledCount, ColorRgb{0,0,0}));
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}
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