sourceresolver_p.h

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// Copyright (C) 2016 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
 
#ifndef SOURCERESOLVER_H
#define SOURCERESOLVER_H
 
//
//  W A R N I N G
//  -------------
//
// This file is not part of the Qt API.  It exists purely as an
// implementation detail.  This header file may change from version to
// version without notice, or even be removed.
//
// We mean it.
//
 
#include "mfstream_p.h"
#include <QUrl>
 
QT_BEGIN_NAMESPACE
 
class SourceResolver: public QObject, public IMFAsyncCallback
{
    Q_OBJECT
public:
    SourceResolver();
 
    ~SourceResolver();
 
    STDMETHODIMP QueryInterface(REFIID riid, LPVOID *ppvObject) override;
    STDMETHODIMP_(ULONG) AddRef(void) override;
    STDMETHODIMP_(ULONG) Release(void) override;
 
    HRESULT STDMETHODCALLTYPE Invoke(IMFAsyncResult *pAsyncResult) override;
 
    HRESULT STDMETHODCALLTYPE GetParameters(DWORD*, DWORD*) override;
 
    void load(const QUrl &url, QIODevice* stream);
 
    void cancel();
 
    void shutdown();
 
    IMFMediaSource* mediaSource() const;
 
Q_SIGNALS:
    void error(long hr);
    void mediaSourceReady();
 
private:
    class State : public IUnknown
    {
    public:
        State(IMFSourceResolver *sourceResolver, bool fromStream);
        virtual ~State();
 
        STDMETHODIMP QueryInterface(REFIID riid, LPVOID *ppvObject) override;
 
        STDMETHODIMP_(ULONG) AddRef(void) override;
 
        STDMETHODIMP_(ULONG) Release(void) override;
 
        IMFSourceResolver* sourceResolver() const;
        bool fromStream() const;
 
    private:
        long m_cRef;
        IMFSourceResolver *m_sourceResolver;
        bool m_fromStream;
    };
 
    long              m_cRef;
    IUnknown          *m_cancelCookie;
    IMFSourceResolver *m_sourceResolver;
    IMFMediaSource    *m_mediaSource;
    MFStream          *m_stream;
    QMutex            m_mutex;
};
 
QT_END_NAMESPACE
 
#endif