81 lines
2.2 KiB
C++
81 lines
2.2 KiB
C++
/*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Library General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*
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* Dmx4LinuxPort.cpp
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* The DMX 4 Linux plugin
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* Copyright (C) 2006-2008 Simon Newton
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*/
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#include <string.h>
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#include <errno.h>
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#include <ola/BaseTypes.h>
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#include <ola/Logging.h>
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#include "plugins/dmx4linux/Dmx4LinuxPort.h"
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#include "plugins/dmx4linux/Dmx4LinuxDevice.h"
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namespace ola {
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namespace plugin {
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namespace dmx4linux {
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/*
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* Write operation
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* @param buffer the DmxBuffer to write
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* @return true on success, false on failure
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*/
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bool Dmx4LinuxOutputPort::WriteDMX(const DmxBuffer &buffer,
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uint8_t priority) {
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int offset = DMX_UNIVERSE_SIZE * m_d4l_universe;
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if (lseek(m_socket->WriteDescriptor(), offset, SEEK_SET) == offset) {
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ssize_t r = m_socket->Send(buffer.GetRaw(), buffer.Size());
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if ((uint) r != buffer.Size()) {
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OLA_WARN << "only wrote " << r << "/" << buffer.Size() << " bytes: " <<
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strerror(errno);
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return false;
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}
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} else {
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OLA_WARN << "failed to seek: " << strerror(errno);
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return false;
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}
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return true;
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}
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/*
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* Read operation
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* @return a DmxBufer with the data
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*/
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const DmxBuffer &Dmx4LinuxInputPort::ReadDMX() const {
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return m_read_buffer;
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}
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/*
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* Process new Data
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*/
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bool Dmx4LinuxInputPort::UpdateData(const uint8_t *in_buffer,
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unsigned int length) {
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DmxBuffer tmp_buffer = DmxBuffer(in_buffer, length);
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if (!(tmp_buffer == m_read_buffer)) {
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m_read_buffer.Set(tmp_buffer);
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DmxChanged();
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}
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return true;
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}
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} // dmx4linux
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} // plugin
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} // ola
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