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Diffstat (limited to 'libk3b/tools/k3bdevicehandler.h')
| -rw-r--r-- | libk3b/tools/k3bdevicehandler.h | 237 |
1 files changed, 237 insertions, 0 deletions
diff --git a/libk3b/tools/k3bdevicehandler.h b/libk3b/tools/k3bdevicehandler.h new file mode 100644 index 0000000..d5159a0 --- /dev/null +++ b/libk3b/tools/k3bdevicehandler.h @@ -0,0 +1,237 @@ +/* + * + * $Id: k3bdevicehandler.h 619556 2007-01-03 17:38:12Z trueg $ + * Copyright (C) 2003 Sebastian Trueg <trueg@k3b.org> + * + * This file is part of the K3b project. + * Copyright (C) 1998-2007 Sebastian Trueg <trueg@k3b.org> + * + * 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. + * See the file "COPYING" for the exact licensing terms. + */ + + +#ifndef _K3B_DEVICE_HANDLER_H_ +#define _K3B_DEVICE_HANDLER_H_ + +#include <k3bthreadjob.h> +#include "k3bdevice.h" +#include "k3bdiskinfo.h" +#include "k3bmsf.h" +#include "k3bcdtext.h" +#include "k3b_export.h" +#include <qcstring.h> + +class QCustomEvent; + + +namespace K3bDevice +{ + class Device; + + + /** + * The K3bDevice::Devicehandler is a threaded wrapper around K3bDevice::Device. + * It allows async access to the time comsuming blocking K3bDevice::Device methods. + * Since it's a K3bJob it is very easy to handle. Just use one of the methods and + * connect to the finished signal. + * Be aware that all methods only return valid values if the corresponding info has + * been successfuly requested. + * + * Be aware that multiple requests in a row (without waiting for the job to finish) will + * only result in one finished() signal answering the last request. + */ + class LIBK3B_EXPORT DeviceHandler : public K3bThreadJob + { + Q_OBJECT + + public: + DeviceHandler( Device*, QObject* parent = 0, const char* name = 0 ); + DeviceHandler( QObject* parent = 0, const char* name = 0 ); + + /** + * This constructor is used by the global "quick" methods and should not be used + * otherwise except for the same usage. + */ + DeviceHandler( int command, Device*, const char* name = 0 ); + + ~DeviceHandler(); + + const DiskInfo& diskInfo() const; + const Toc& toc() const; + const CdText& cdText() const; + const QByteArray& cdTextRaw() const; + K3b::Msf diskSize() const; + K3b::Msf remainingSize() const; + int tocType() const; + int numSessions() const; + long long bufferCapacity() const; + long long availableBufferCapacity() const; + + bool success() const; + + /** + * Use this when the command + * returnes some error code. + */ + int errorCode() const; + + enum Command { + /** + * Always successful, even with an empty or no media at all! + */ + NG_DISKINFO = 1, // TODO: rename this into DISKINFO + /** + * Always successful, even with an empty or no media at all! + */ + TOC = 2, + /** + * Successful if the media contains CD-Text. + */ + CD_TEXT = 4, + /** + * Successful if the media contains CD-Text. + */ + CD_TEXT_RAW = 8, + /** + * Always successful, even with an empty or no media at all! + */ + DISKSIZE = 16, + /** + * Always successful, even with an empty or no media at all! + */ + REMAININGSIZE = 32, + /** + * Always successful, even with an empty or no media at all! + */ + TOCTYPE = 64, + /** + * Always successful, even with an empty or no media at all! + */ + NUMSESSIONS = 128, + /** + * Successful if the drive could be blocked. + */ + BLOCK = 256, + /** + * Successful if the drive could be unblocked. + */ + UNBLOCK = 512, + /** + * Successful if the media was ejected. + */ + EJECT = 1024, + /** + * Successful if the media was loaded + */ + LOAD = 2048, + RELOAD = EJECT|LOAD, + /** + * Retrieves NG_DISKINFO, TOC, and CD-Text in case of an audio or mixed + * mode cd. + * The only difference to NG_DISKINFO|TOC|CD_TEXT is that no CD-Text is not + * considered an error. + * + * Always successful, even with an empty or no media at all! + */ + DISKINFO = 4096, // TODO: rename this in somthing like: DISKINFO_COMPLETE + /** + * Determine the device buffer state. + */ + BUFFER_CAPACITY = 8192 + }; + + signals: + void finished( K3bDevice::DeviceHandler* ); + + public slots: + void setDevice( Device* ); + void sendCommand( int command ); + + void getToc(); + void getDiskInfo(); + void getDiskSize(); + void getRemainingSize(); + void getTocType(); + void getNumSessions(); + void block( bool ); + void eject(); + + protected: + /** + * reimplemented from K3bThreadJob for internal reasons + */ + virtual void customEvent( QCustomEvent* ); + + private: + class DeviceHandlerThread; + DeviceHandlerThread* m_thread; + + bool m_selfDelete; + }; + + /** + * Usage: + * \code + * connect( K3bDevice::sendCommand( K3bDevice::DeviceHandler::MOUNT, dev ), + * SIGNAL(finished(DeviceHandler*)), + * this, SLOT(someSlot(DeviceHandler*)) ); + * + * void someSlot( DeviceHandler* dh ) { + * if( dh->success() ) { + * \endcode + * + * Be aware that the DeviceHandler will get destroyed once the signal has been + * emited. + */ + LIBK3B_EXPORT DeviceHandler* sendCommand( int command, Device* ); + + inline DeviceHandler* diskInfo(Device* dev) { + return sendCommand(DeviceHandler::DISKINFO,dev); + } + + inline DeviceHandler* toc(Device* dev) { + return sendCommand(DeviceHandler::TOC,dev); + } + + inline DeviceHandler* diskSize(Device* dev) { + return sendCommand(DeviceHandler::DISKSIZE,dev); + } + + inline DeviceHandler* remainingSize(Device* dev) { + return sendCommand(DeviceHandler::REMAININGSIZE,dev); + } + + inline DeviceHandler* tocType(Device* dev) { + return sendCommand(DeviceHandler::TOCTYPE,dev); + } + + inline DeviceHandler* numSessions(Device* dev) { + return sendCommand(DeviceHandler::NUMSESSIONS,dev); + } + + inline DeviceHandler* block(Device* dev) { + return sendCommand(DeviceHandler::BLOCK,dev); + } + + inline DeviceHandler* unblock(Device* dev) { + return sendCommand(DeviceHandler::UNBLOCK,dev); + } + + inline DeviceHandler* eject(Device* dev) { + return sendCommand(DeviceHandler::EJECT,dev); + } + + inline DeviceHandler* reload(Device* dev) { + return sendCommand(DeviceHandler::RELOAD,dev); + } + + inline DeviceHandler* load(Device* dev) { + return sendCommand(DeviceHandler::LOAD,dev); + } +} + +#endif |