135 lines
3.6 KiB
C++
135 lines
3.6 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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* WidgetDetector.h
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* Handles creating UsbWidget objects.
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* Copyright (C) 2010 Simon Newton
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*/
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#ifndef PLUGINS_USBPRO_WIDGETDETECTOR_H_
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#define PLUGINS_USBPRO_WIDGETDETECTOR_H_
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#include <string.h>
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#include <map>
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#include <string>
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#include "olad/PluginAdaptor.h"
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#include "plugins/usbpro/UsbWidget.h"
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namespace ola {
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namespace plugin {
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namespace usbpro {
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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 PluginAdaptorSelectServerAdaptor: public SelectServerAdaptor {
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public:
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explicit PluginAdaptorSelectServerAdaptor(
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const ola::PluginAdaptor *plugin_adaptor):
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m_plugin_adaptor(plugin_adaptor) {
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}
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bool AddSocket(ola::network::ConnectedSocket *socket,
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bool delete_on_close = false) const {
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return m_plugin_adaptor->AddSocket(socket, delete_on_close);
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}
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private:
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const ola::PluginAdaptor *m_plugin_adaptor;
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};
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/*
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* Contains information about a usb device.
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*/
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class DeviceInformation {
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public:
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DeviceInformation():
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esta_id(0),
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device_id(0) {
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memset(serial, 0, SERIAL_LENGTH);
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}
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enum {SERIAL_LENGTH = 4};
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uint16_t esta_id;
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uint16_t device_id;
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string manufactuer;
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string device;
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uint8_t serial[SERIAL_LENGTH];
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};
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/*
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* Implement this to respond to widget discovery events
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*/
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class WidgetDetectorListener {
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public:
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virtual ~WidgetDetectorListener() {}
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/*
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* Ownership of the widget is transferred here
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*/
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virtual void NewWidget(class UsbWidget *widget,
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const DeviceInformation &info) = 0;
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};
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/*
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* Handles widget discovery
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*/
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class WidgetDetector: public WidgetListener {
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public:
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explicit WidgetDetector(const ola::PluginAdaptor *plugin_adaptor):
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m_plugin_adaptor(plugin_adaptor),
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m_timeout_id(ola::network::INVALID_TIMEOUT) {
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}
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~WidgetDetector();
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void SetListener(WidgetDetectorListener *listener) {
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m_listener = listener;
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}
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bool Discover(const string &path);
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// called by the widgets
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void HandleMessage(UsbWidget *widget, uint8_t label, unsigned int length,
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const uint8_t *data);
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void DiscoveryTimeout(UsbWidget *widget);
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int DeviceClosed(UsbWidget *widget);
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private:
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typedef struct {
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uint8_t id_low;
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uint8_t id_high;
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uint8_t text[32];
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uint8_t terminator;
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} id_response;
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WidgetDetectorListener *m_listener;
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const ola::PluginAdaptor *m_plugin_adaptor;
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std::map<UsbWidget*, DeviceInformation> m_widgets;
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timeout_id m_timeout_id;
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bool SendDiscoveryMessages(UsbWidget *widget);
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void HandleIdResponse(UsbWidget *widget, unsigned int length,
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const uint8_t *data, bool is_device);
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void HandleSerialResponse(UsbWidget *widget, unsigned int length,
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const uint8_t *data);
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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_WIDGETDETECTOR_H_
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