115 lines
3.0 KiB
C++
115 lines
3.0 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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* UsbWidget.h
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* Read and Write to a USB Widget.
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* Copyright (C) 2010 Simon Newton
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*/
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#ifndef PLUGINS_USBPRO_USBWIDGET_H_
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#define PLUGINS_USBPRO_USBWIDGET_H_
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#include <stdint.h>
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#include <string>
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#include "ola/network/Socket.h"
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#include "olad/PluginAdaptor.h"
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namespace ola {
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namespace plugin {
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namespace usbpro {
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class UsbWidget;
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/*
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* Implement this to respond to widget messages.
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*/
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class WidgetListener {
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public:
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virtual ~WidgetListener() {}
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virtual void HandleMessage(UsbWidget *widget,
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uint8_t label,
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unsigned int length,
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const uint8_t *data) = 0;
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};
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/*
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* Abstract away the interface to the select server
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*/
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class SelectServerAdaptor {
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public:
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virtual ~SelectServerAdaptor() {}
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virtual bool AddSocket(ola::network::ConnectedSocket *socket,
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bool delete_on_close = false) const = 0;
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};
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/*
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* The basic representation of a widget. This knows how to send and recieve usb
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* pro messages.
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*/
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class UsbWidget {
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public:
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UsbWidget(const SelectServerAdaptor &ss_adaptor, int fd);
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~UsbWidget();
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void SetMessageHandler(WidgetListener *listener) { m_listener = listener; }
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void SetOnRemove(ola::SingleUseClosure<void> *on_close);
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void SocketReady();
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bool SendMessage(uint8_t label, unsigned int length,
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const uint8_t *data) const;
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static const uint8_t DMX_LABEL = 6;
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static const uint8_t SERIAL_LABEL = 10;
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static const uint8_t MANUFACTURER_LABEL = 77;
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static const uint8_t DEVICE_LABEL = 78;
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private:
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typedef enum {
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PRE_SOM,
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RECV_LABEL,
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RECV_SIZE_LO,
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RECV_SIZE_HI,
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RECV_BODY,
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RECV_EOM,
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} receive_state;
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enum {MAX_DATA_SIZE = 600};
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typedef struct {
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uint8_t som;
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uint8_t label;
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uint8_t len;
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uint8_t len_hi;
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} message_header;
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WidgetListener *m_listener;
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ola::network::DeviceSocket *m_socket;
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receive_state m_state;
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unsigned int m_bytes_received;
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message_header m_header;
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uint8_t m_recv_buffer[MAX_DATA_SIZE];
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void ReceiveMessage();
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static const uint8_t EOM = 0xe7;
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static const uint8_t SOM = 0x7e;
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};
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} // usbpro
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} // plugin
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} // ola
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#endif // PLUGINS_USBPRO_USBWIDGET_H_
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