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#pragma once
#include "stdafx.h"
class SimpleMediaSource;
class SimpleMediaStream : public RuntimeClass<
RuntimeClassFlags<ClassicCom>,
IMFMediaEventGenerator,
IMFMediaStream,
IMFMediaStream2>
{
friend class SimpleMediaSource;
public:
// IMFMediaEventGenerator
IFACEMETHOD(BeginGetEvent)(IMFAsyncCallback *pCallback, IUnknown *punkState);
IFACEMETHOD(EndGetEvent)(IMFAsyncResult *pResult, IMFMediaEvent **ppEvent);
IFACEMETHOD(GetEvent)(DWORD dwFlags, IMFMediaEvent **ppEvent);
IFACEMETHOD(QueueEvent)(MediaEventType met, REFGUID guidExtendedType, HRESULT hrStatus, const PROPVARIANT *pvValue);
// IMFMediaStream
IFACEMETHOD(GetMediaSource)(IMFMediaSource **ppMediaSource);
IFACEMETHOD(GetStreamDescriptor)(IMFStreamDescriptor **ppStreamDescriptor);
IFACEMETHOD(RequestSample)(IUnknown *pToken);
// IMFMediaStream2
IFACEMETHOD(SetStreamState)(MF_STREAM_STATE state);
IFACEMETHOD(GetStreamState)(_Out_ MF_STREAM_STATE *pState);
// Non-interface methods.
HRESULT RuntimeClassInitialize(_In_ SimpleMediaSource* pSource);
HRESULT Shutdown();
protected:
HRESULT _CheckShutdownRequiresLock();
HRESULT _SetStreamAttributes(IMFAttributes* pAttributeStore);
HRESULT _SetStreamDescriptorAttributes(IMFAttributes* pAttributeStore);
CriticalSection _critSec;
ComPtr<IMFMediaSource> _parent;
ComPtr<IMFMediaEventQueue> _spEventQueue;
ComPtr<IMFAttributes> _spAttributes;
ComPtr<IMFMediaType> _spMediaType;
ComPtr<IMFStreamDescriptor> _spStreamDesc;
bool _isShutdown = false;
bool _isSelected = false;
const DWORD STREAMINDEX = 0; // since there is only one stream
};
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