115 lines
3.0 KiB
C
115 lines
3.0 KiB
C
|
/*
|
||
|
|
* This program is free software; you can redistribute it and/or modify
|
||
|
|
* it under the terms of the GNU General Public License as published by
|
||
|
|
* the Free Software Foundation; either version 2 of the License, or
|
||
|
|
* (at your option) any later version.
|
||
|
|
*
|
||
|
|
* This program is distributed in the hope that it will be useful,
|
||
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||
|
|
* GNU Library General Public License for more details.
|
||
|
|
*
|
||
|
|
* You should have received a copy of the GNU General Public License
|
||
|
|
* along with this program; if not, write to the Free Software
|
||
|
|
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
|
||
|
|
*
|
||
|
|
* UsbWidget.h
|
||
|
|
* Read and Write to a USB Widget.
|
||
|
|
* Copyright (C) 2010 Simon Newton
|
||
|
|
*/
|
||
|
|
|
||
|
|
#ifndef PLUGINS_USBPRO_USBWIDGET_H_
|
||
|
|
#define PLUGINS_USBPRO_USBWIDGET_H_
|
||
|
|
|
||
|
|
#include <stdint.h>
|
||
|
|
#include <string>
|
||
|
|
#include "ola/network/Socket.h"
|
||
|
|
#include "olad/PluginAdaptor.h"
|
||
|
|
|
||
|
|
namespace ola {
|
||
|
|
namespace plugin {
|
||
|
|
namespace usbpro {
|
||
|
|
|
||
|
|
class UsbWidget;
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Implement this to respond to widget messages.
|
||
|
|
*/
|
||
|
|
class WidgetListener {
|
||
|
|
public:
|
||
|
|
virtual ~WidgetListener() {}
|
||
|
|
virtual void HandleMessage(UsbWidget *widget,
|
||
|
|
uint8_t label,
|
||
|
|
unsigned int length,
|
||
|
|
const uint8_t *data) = 0;
|
||
|
|
};
|
||
|
|
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Abstract away the interface to the select server
|
||
|
|
*/
|
||
|
|
class SelectServerAdaptor {
|
||
|
|
public:
|
||
|
|
virtual ~SelectServerAdaptor() {}
|
||
|
|
virtual bool AddSocket(ola::network::ConnectedSocket *socket,
|
||
|
|
bool delete_on_close = false) const = 0;
|
||
|
|
};
|
||
|
|
|
||
|
|
|
||
|
|
/*
|
||
|
|
* The basic representation of a widget. This knows how to send and recieve usb
|
||
|
|
* pro messages.
|
||
|
|
*/
|
||
|
|
class UsbWidget {
|
||
|
|
public:
|
||
|
|
UsbWidget(const SelectServerAdaptor &ss_adaptor, int fd);
|
||
|
|
~UsbWidget();
|
||
|
|
void SetMessageHandler(WidgetListener *listener) { m_listener = listener; }
|
||
|
|
void SetOnRemove(ola::SingleUseClosure<void> *on_close);
|
||
|
|
|
||
|
|
void SocketReady();
|
||
|
|
|
||
|
|
bool SendMessage(uint8_t label, unsigned int length,
|
||
|
|
const uint8_t *data) const;
|
||
|
|
|
||
|
|
static const uint8_t DMX_LABEL = 6;
|
||
|
|
static const uint8_t SERIAL_LABEL = 10;
|
||
|
|
static const uint8_t MANUFACTURER_LABEL = 77;
|
||
|
|
static const uint8_t DEVICE_LABEL = 78;
|
||
|
|
|
||
|
|
private:
|
||
|
|
typedef enum {
|
||
|
|
PRE_SOM,
|
||
|
|
RECV_LABEL,
|
||
|
|
RECV_SIZE_LO,
|
||
|
|
RECV_SIZE_HI,
|
||
|
|
RECV_BODY,
|
||
|
|
RECV_EOM,
|
||
|
|
} receive_state;
|
||
|
|
|
||
|
|
enum {MAX_DATA_SIZE = 600};
|
||
|
|
|
||
|
|
typedef struct {
|
||
|
|
uint8_t som;
|
||
|
|
uint8_t label;
|
||
|
|
uint8_t len;
|
||
|
|
uint8_t len_hi;
|
||
|
|
} message_header;
|
||
|
|
|
||
|
|
WidgetListener *m_listener;
|
||
|
|
ola::network::DeviceSocket *m_socket;
|
||
|
|
receive_state m_state;
|
||
|
|
unsigned int m_bytes_received;
|
||
|
|
message_header m_header;
|
||
|
|
uint8_t m_recv_buffer[MAX_DATA_SIZE];
|
||
|
|
|
||
|
|
void ReceiveMessage();
|
||
|
|
|
||
|
|
static const uint8_t EOM = 0xe7;
|
||
|
|
static const uint8_t SOM = 0x7e;
|
||
|
|
};
|
||
|
|
} // usbpro
|
||
|
|
} // plugin
|
||
|
|
} // ola
|
||
|
|
#endif // PLUGINS_USBPRO_USBWIDGET_H_
|