RobeWidgetDetector.h

/*
 * 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.
 *
 * RobeWidgetDetector.h
 * Runs the Robe discovery routine.
 * Copyright (C) 2011 Simon Newton
 */

#ifndef PLUGINS_USBPRO_ROBEWIDGETDETECTOR_H_
#define PLUGINS_USBPRO_ROBEWIDGETDETECTOR_H_

#include <ola/Callback.h>
#include <ola/rdm/UID.h>
#include <ola/thread/SchedulingExecutorInterface.h>
#include <memory>
#include <map>
#include <string>
#include "plugins/usbpro/BaseRobeWidget.h"
#include "plugins/usbpro/WidgetDetectorInterface.h"

namespace ola {
namespace plugin {
namespace usbpro {

using std::auto_ptr;

/*
 * Contains information about the Robe USB device.
*/
class RobeWidgetInformation {
 public:
 RobeWidgetInformation()
 : uid(0, 0),
 hardware_version(0),
 software_version(0),
 eeprom_version(0) {
 }
 RobeWidgetInformation(const RobeWidgetInformation &other):
 uid(other.uid),
 hardware_version(other.hardware_version),
 software_version(other.software_version),
 eeprom_version(other.eeprom_version) {
 }

 ola::rdm::UID uid;
 uint8_t hardware_version;
 uint8_t software_version;
 uint8_t eeprom_version;
};


/*
 * Handles widget discovery for Robe devices.
 */
class RobeWidgetDetector: public WidgetDetectorInterface {
 public:
 typedef ola::Callback2<void,
 ola::io::ConnectedDescriptor*,
 const RobeWidgetInformation*> SuccessHandler;
 typedef ola::Callback1<void,
 ola::io::ConnectedDescriptor*> FailureHandler;

 RobeWidgetDetector(
 ola::thread::SchedulingExecutorInterface *scheduler,
 SuccessHandler *on_success,
 FailureHandler *on_failure,
 unsigned int timeout = 200);
 ~RobeWidgetDetector();

 bool Discover(ola::io::ConnectedDescriptor *descriptor);

 private:
 // Hold the discovery state for a widget
 class DiscoveryState {
 public:
 DiscoveryState():
 discovery_state(INFO_SENT),
 timeout_id(ola::thread::INVALID_TIMEOUT) {
 }
 ~DiscoveryState() {}

 typedef enum {
 INFO_SENT,
 UID_SENT,
 } widget_state;

 RobeWidgetInformation information;
 widget_state discovery_state;
 ola::thread::timeout_id timeout_id;
 };

 ola::thread::SchedulingExecutorInterface *m_scheduler;
 const unsigned int m_timeout_ms;
 auto_ptr<SuccessHandler> m_callback;
 auto_ptr<FailureHandler> m_failure_callback;

 typedef std::map<DispatchingRobeWidget*, DiscoveryState> WidgetStateMap;
 WidgetStateMap m_widgets;

 void HandleMessage(DispatchingRobeWidget *widget,
 uint8_t label,
 const uint8_t *data,
 unsigned int length);
 void HandleInfoMessage(DispatchingRobeWidget *widget,
 const uint8_t *data,
 unsigned int length);
 void HandleUidMessage(DispatchingRobeWidget *widget,
 const uint8_t *data,
 unsigned int length);
 void WidgetRemoved(DispatchingRobeWidget *widget);
 void FailWidget(DispatchingRobeWidget *widget);
 void CleanupWidget(DispatchingRobeWidget *widget);
 void DispatchWidget(DispatchingRobeWidget *widget,
 const RobeWidgetInformation *info);
 void RemoveTimeout(DiscoveryState *discovery_state);
 void SetupTimeout(DispatchingRobeWidget *widget,
 DiscoveryState *discovery_state);
 bool IsUnlocked(const RobeWidgetInformation &info);

 static const uint32_t MODEL_MASK = 0xffff0000;
 static const uint32_t RUI_DEVICE_PREFIX = 0x01000000;
 static const uint32_t WTX_DEVICE_PREFIX = 0x02000000;
 // 0x14 is good, 0xe is bad. actual version is probably somewhere in
 // between.
 static const uint8_t RUI_MIN_UNLOCKED_SOFTWARE_VERSION = 0x14;
 // we need at least v 11 for decent RDM support
 static const uint8_t WTX_MIN_SOFTWARE_VERSION = 0x0b;
};
} // namespace usbpro
} // namespace plugin
} // namespace ola
#endif // PLUGINS_USBPRO_ROBEWIDGETDETECTOR_H_