| /**************************************************************************** |
| ** |
| ** Copyright (C) 2016 The Qt Company Ltd. |
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| ** |
| ** This file is part of the Qt Mobility Components. |
| ** |
| ** $QT_BEGIN_LICENSE:LGPL$ |
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| ** |
| ** GNU General Public License Usage |
| ** Alternatively, this file may be used under the terms of the GNU |
| ** General Public License version 2.0 or (at your option) the GNU General |
| ** Public license version 3 or any later version approved by the KDE Free |
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| ****************************************************************************/ |
| |
| #ifndef MFSTREAM_H |
| #define MFSTREAM_H |
| |
| #include <mfapi.h> |
| #include <mfidl.h> |
| #include <QtCore/qmutex.h> |
| #include <QtCore/qiodevice.h> |
| #include <QtCore/qcoreevent.h> |
| |
| QT_USE_NAMESPACE |
| |
| class MFStream : public QObject, public IMFByteStream |
| { |
| Q_OBJECT |
| public: |
| MFStream(QIODevice *stream, bool ownStream); |
| |
| ~MFStream(); |
| |
| //from IUnknown |
| STDMETHODIMP QueryInterface(REFIID riid, LPVOID *ppvObject); |
| |
| STDMETHODIMP_(ULONG) AddRef(void); |
| |
| STDMETHODIMP_(ULONG) Release(void); |
| |
| |
| //from IMFByteStream |
| STDMETHODIMP GetCapabilities(DWORD *pdwCapabilities); |
| |
| STDMETHODIMP GetLength(QWORD *pqwLength); |
| |
| STDMETHODIMP SetLength(QWORD); |
| |
| STDMETHODIMP GetCurrentPosition(QWORD *pqwPosition); |
| |
| STDMETHODIMP SetCurrentPosition(QWORD qwPosition); |
| |
| STDMETHODIMP IsEndOfStream(BOOL *pfEndOfStream); |
| |
| STDMETHODIMP Read(BYTE *pb, ULONG cb, ULONG *pcbRead); |
| |
| STDMETHODIMP BeginRead(BYTE *pb, ULONG cb, IMFAsyncCallback *pCallback, |
| IUnknown *punkState); |
| |
| STDMETHODIMP EndRead(IMFAsyncResult* pResult, ULONG *pcbRead); |
| |
| STDMETHODIMP Write(const BYTE *, ULONG, ULONG *); |
| |
| STDMETHODIMP BeginWrite(const BYTE *, ULONG , |
| IMFAsyncCallback *, |
| IUnknown *); |
| |
| STDMETHODIMP EndWrite(IMFAsyncResult *, |
| ULONG *); |
| |
| STDMETHODIMP Seek( |
| MFBYTESTREAM_SEEK_ORIGIN SeekOrigin, |
| LONGLONG llSeekOffset, |
| DWORD, |
| QWORD *pqwCurrentPosition); |
| |
| STDMETHODIMP Flush(); |
| |
| STDMETHODIMP Close(); |
| |
| private: |
| class AsyncReadState : public IUnknown |
| { |
| public: |
| AsyncReadState(BYTE *pb, ULONG cb); |
| |
| //from IUnknown |
| STDMETHODIMP QueryInterface(REFIID riid, LPVOID *ppvObject); |
| |
| STDMETHODIMP_(ULONG) AddRef(void); |
| |
| STDMETHODIMP_(ULONG) Release(void); |
| |
| BYTE* pb() const; |
| ULONG cb() const; |
| ULONG bytesRead() const; |
| |
| void setBytesRead(ULONG cbRead); |
| |
| private: |
| long m_cRef; |
| BYTE *m_pb; |
| ULONG m_cb; |
| ULONG m_cbRead; |
| }; |
| |
| long m_cRef; |
| QIODevice *m_stream; |
| bool m_ownStream; |
| DWORD m_workQueueId; |
| QMutex m_mutex; |
| |
| void doRead(); |
| |
| private Q_SLOTS: |
| void handleReadyRead(); |
| |
| protected: |
| void customEvent(QEvent *event); |
| IMFAsyncResult *m_currentReadResult; |
| }; |
| |
| #endif |