/usr/include/phonon4qt5/phonon/experimental/packet.h is in libphonon4qt5experimental-dev 4:4.8.3-0ubuntu3.
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 | /* This file is part of the KDE project
Copyright (C) 2007-2008 Matthias Kretz <kretz@kde.org>
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public
License version 2 as published by the Free Software Foundation.
This library 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 Library General Public License
along with this library; see the file COPYING.LIB. If not, write to
the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
Boston, MA 02110-1301, USA.
*/
#ifndef PHONON_PACKET_H
#define PHONON_PACKET_H
#include "export.h"
namespace Phonon
{
class PacketPool;
struct PacketPrivate;
/** \class Packet packetpool.h phonon/Packet
* \brief Class to access memory preallocated by PacketPool
*
* \note PacketPool and Packet are threadsafe.
*
* \author Matthias Kretz <kretz@kde.org>
*/
class PHONONEXPERIMENTAL_EXPORT Packet
{
friend class PacketPoolPrivate;
Q_DECLARE_PRIVATE(Packet)
public:
/**
* Constructs a null packet.
*
* \see isNull
*/
Packet();
/**
* Returns a packet with a capacity of pool.packetSize if there is still free data in the
* PacketPool. Returns a null packet otherwise. The size will initially be set to 0.
*/
explicit Packet(PacketPool &pool);
/**
* Returns a shared copy of the object. Note that Packet will not detach (and it can not
* detach as there's a fixed amount of memory preallocated. If you want to copy the actual
* memory data you have to request another packet from the pool and copy the memory
* yourself.)
*/
Packet(const Packet &rhs);
/**
* Assigns a shared copy of the object. Note that Packet will not detach (and it can not
* detach as there's a fixed amount of memory preallocated. If you want to copy the actual
* memory data you have to request another packet from the pool and copy the memory
* yourself.)
*/
Packet &operator=(const Packet &rhs);
/**
* Dereferences the packet data. If this is the last reference that gets released the packet
* becomes available in the PacketPool again automatically.
*/
~Packet();
/**
* Returns whether the packets reference the same data.
*/
bool operator==(const Packet &rhs) const;
/**
* Returns whether the packets reference different data.
*/
bool operator!=(const Packet &rhs) const;
/**
* Returns whether this object is a null packet.
*
* \see Packet()
*/
bool isNull() const;
/**
* Returns a pointer to read the data this packet references.
*
* You may read size() bytes.
*/
const char *data() const;
/**
* Returns a pointer to read and write the data this packet references.
*
* You may read size() bytes.
* You may write capacity() bytes.
* If you write to this pointer do not forget to adjust the size by calling setSize().
*/
char *data();
/**
* Returns the number of bytes that have a defined value.
*/
int size() const;
/**
* Sets how many bytes in the data pointer have a defined value.
*/
void setSize(int size);
/**
* Returns the number of bytes that may be accessed.
*/
int capacity() const;
protected:
explicit Packet(PacketPrivate &dd);
PacketPrivate *d_ptr;
};
} // namespace Phonon
#endif // PHONON_PACKET_H
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