399500f87e
Change-Id: Ia8c1c38aba1544603fada8c414cc856f365fd15b Reviewed-by: Akseli Salovaara <akseli.salovaara@digia.com> Reviewed-by: Sergio Ahumada <sergio.ahumada@digia.com>
151 lines
4.2 KiB
C++
151 lines
4.2 KiB
C++
/****************************************************************************
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**
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** Copyright (C) 2013 Digia Plc and/or its subsidiary(-ies).
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** Contact: http://www.qt-project.org/legal
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**
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** This file is part of the Qt Mobility Components.
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**
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** $QT_BEGIN_LICENSE:LGPL$
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** Commercial License Usage
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** Licensees holding valid commercial Qt licenses may use this file in
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** accordance with the commercial license agreement provided with the
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** Software or, alternatively, in accordance with the terms contained in
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** a written agreement between you and Digia. For licensing terms and
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** conditions see http://qt.digia.com/licensing. For further information
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** use the contact form at http://qt.digia.com/contact-us.
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**
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** GNU Lesser General Public License Usage
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** Alternatively, this file may be used under the terms of the GNU Lesser
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** General Public License version 2.1 as published by the Free Software
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** Foundation and appearing in the file LICENSE.LGPL included in the
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** packaging of this file. Please review the following information to
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** ensure the GNU Lesser General Public License version 2.1 requirements
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** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
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**
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** In addition, as a special exception, Digia gives you certain additional
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** rights. These rights are described in the Digia Qt LGPL Exception
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** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
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**
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** GNU General Public License Usage
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** Alternatively, this file may be used under the terms of the GNU
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** General Public License version 3.0 as published by the Free Software
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** Foundation and appearing in the file LICENSE.GPL included in the
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** packaging of this file. Please review the following information to
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** ensure the GNU General Public License version 3.0 requirements will be
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** met: http://www.gnu.org/copyleft/gpl.html.
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**
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**
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** $QT_END_LICENSE$
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**
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****************************************************************************/
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#ifndef MFSTREAM_H
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#define MFSTREAM_H
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#include <mfapi.h>
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#include <mfidl.h>
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#include <QtCore/qmutex.h>
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#include <QtCore/qiodevice.h>
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#include <QtCore/qcoreevent.h>
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QT_USE_NAMESPACE
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class MFStream : public QObject, public IMFByteStream
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{
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Q_OBJECT
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public:
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MFStream(QIODevice *stream, bool ownStream);
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~MFStream();
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//from IUnknown
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STDMETHODIMP QueryInterface(REFIID riid, LPVOID *ppvObject);
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STDMETHODIMP_(ULONG) AddRef(void);
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STDMETHODIMP_(ULONG) Release(void);
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//from IMFByteStream
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STDMETHODIMP GetCapabilities(DWORD *pdwCapabilities);
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STDMETHODIMP GetLength(QWORD *pqwLength);
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STDMETHODIMP SetLength(QWORD);
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STDMETHODIMP GetCurrentPosition(QWORD *pqwPosition);
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STDMETHODIMP SetCurrentPosition(QWORD qwPosition);
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STDMETHODIMP IsEndOfStream(BOOL *pfEndOfStream);
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STDMETHODIMP Read(BYTE *pb, ULONG cb, ULONG *pcbRead);
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STDMETHODIMP BeginRead(BYTE *pb, ULONG cb, IMFAsyncCallback *pCallback,
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IUnknown *punkState);
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STDMETHODIMP EndRead(IMFAsyncResult* pResult, ULONG *pcbRead);
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STDMETHODIMP Write(const BYTE *, ULONG, ULONG *);
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STDMETHODIMP BeginWrite(const BYTE *, ULONG ,
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IMFAsyncCallback *,
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IUnknown *);
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STDMETHODIMP EndWrite(IMFAsyncResult *,
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ULONG *);
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STDMETHODIMP Seek(
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MFBYTESTREAM_SEEK_ORIGIN SeekOrigin,
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LONGLONG llSeekOffset,
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DWORD,
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QWORD *pqwCurrentPosition);
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STDMETHODIMP Flush();
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STDMETHODIMP Close();
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private:
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class AsyncReadState : public IUnknown
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{
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public:
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AsyncReadState(BYTE *pb, ULONG cb);
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//from IUnknown
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STDMETHODIMP QueryInterface(REFIID riid, LPVOID *ppvObject);
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STDMETHODIMP_(ULONG) AddRef(void);
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STDMETHODIMP_(ULONG) Release(void);
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BYTE* pb() const;
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ULONG cb() const;
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ULONG bytesRead() const;
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void setBytesRead(ULONG cbRead);
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private:
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long m_cRef;
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BYTE *m_pb;
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ULONG m_cb;
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ULONG m_cbRead;
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};
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long m_cRef;
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QIODevice *m_stream;
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bool m_ownStream;
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DWORD m_workQueueId;
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QMutex m_mutex;
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void doRead();
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private Q_SLOTS:
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void handleReadyRead();
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protected:
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void customEvent(QEvent *event);
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IMFAsyncResult *m_currentReadResult;
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};
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#endif
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