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#ifndef VIDEOSURFACEFILTER_H
#define VIDEOSURFACEFILTER_H
#include "directshowglobal.h"
#include "directshowmediatypelist.h"
#include "directshowsamplescheduler.h"
#include "directshowmediatype.h"
#include <QtCore/qbasictimer.h>
#include <QtCore/qcoreevent.h>
#include <QtCore/qmutex.h>
#include <QtCore/qsemaphore.h>
#include <QtCore/qstring.h>
#include <QtCore/qwaitcondition.h>
#include <dshow.h>
QT_BEGIN_NAMESPACE
class QAbstractVideoSurface;
QT_END_NAMESPACE
class DirectShowEventLoop;
class VideoSurfaceFilter
: public QObject
, public DirectShowMediaTypeList
, public IBaseFilter
, public IAMFilterMiscFlags
, public IPin
{
Q_OBJECT
public:
VideoSurfaceFilter(
QAbstractVideoSurface *surface, DirectShowEventLoop *loop, QObject *parent = 0);
~VideoSurfaceFilter();
// IUnknown
HRESULT STDMETHODCALLTYPE QueryInterface(REFIID riid, void **ppvObject);
ULONG STDMETHODCALLTYPE AddRef();
ULONG STDMETHODCALLTYPE Release();
// IPersist
HRESULT STDMETHODCALLTYPE GetClassID(CLSID *pClassID);
// IMediaFilter
HRESULT STDMETHODCALLTYPE Run(REFERENCE_TIME tStart);
HRESULT STDMETHODCALLTYPE Pause();
HRESULT STDMETHODCALLTYPE Stop();
HRESULT STDMETHODCALLTYPE GetState(DWORD dwMilliSecsTimeout, FILTER_STATE *pState);
HRESULT STDMETHODCALLTYPE SetSyncSource(IReferenceClock *pClock);
HRESULT STDMETHODCALLTYPE GetSyncSource(IReferenceClock **ppClock);
// IBaseFilter
HRESULT STDMETHODCALLTYPE EnumPins(IEnumPins **ppEnum);
HRESULT STDMETHODCALLTYPE FindPin(LPCWSTR Id, IPin **ppPin);
HRESULT STDMETHODCALLTYPE JoinFilterGraph(IFilterGraph *pGraph, LPCWSTR pName);
HRESULT STDMETHODCALLTYPE QueryFilterInfo(FILTER_INFO *pInfo);
HRESULT STDMETHODCALLTYPE QueryVendorInfo(LPWSTR *pVendorInfo);
// IAMFilterMiscFlags
ULONG STDMETHODCALLTYPE GetMiscFlags();
// IPin
HRESULT STDMETHODCALLTYPE Connect(IPin *pReceivePin, const AM_MEDIA_TYPE *pmt);
HRESULT STDMETHODCALLTYPE ReceiveConnection(IPin *pConnector, const AM_MEDIA_TYPE *pmt);
HRESULT STDMETHODCALLTYPE Disconnect();
HRESULT STDMETHODCALLTYPE ConnectedTo(IPin **ppPin);
HRESULT STDMETHODCALLTYPE ConnectionMediaType(AM_MEDIA_TYPE *pmt);
HRESULT STDMETHODCALLTYPE QueryPinInfo(PIN_INFO *pInfo);
HRESULT STDMETHODCALLTYPE QueryId(LPWSTR *Id);
HRESULT STDMETHODCALLTYPE QueryAccept(const AM_MEDIA_TYPE *pmt);
HRESULT STDMETHODCALLTYPE EnumMediaTypes(IEnumMediaTypes **ppEnum);
HRESULT STDMETHODCALLTYPE QueryInternalConnections(IPin **apPin, ULONG *nPin);
HRESULT STDMETHODCALLTYPE EndOfStream();
HRESULT STDMETHODCALLTYPE BeginFlush();
HRESULT STDMETHODCALLTYPE EndFlush();
HRESULT STDMETHODCALLTYPE NewSegment(REFERENCE_TIME tStart, REFERENCE_TIME tStop, double dRate);
HRESULT STDMETHODCALLTYPE QueryDirection(PIN_DIRECTION *pPinDir);
int currentMediaTypeToken();
HRESULT nextMediaType(
int token, int *index, ULONG count, AM_MEDIA_TYPE **types, ULONG *fetchedCount);
HRESULT skipMediaType(int token, int *index, ULONG count);
HRESULT cloneMediaType(int token, int index, IEnumMediaTypes **enumeration);
protected:
void customEvent(QEvent *event);
private Q_SLOTS:
void supportedFormatsChanged();
void sampleReady();
private:
HRESULT start();
void stop();
void flush();
enum
{
StartSurface = QEvent::User,
StopSurface,
FlushSurface
};
LONG m_ref;
FILTER_STATE m_state;
QAbstractVideoSurface *m_surface;
DirectShowEventLoop *m_loop;
IFilterGraph *m_graph;
IPin *m_peerPin;
int m_bytesPerLine;
HRESULT m_startResult;
QString m_name;
QString m_pinId;
DirectShowMediaType m_mediaType;
QVideoSurfaceFormat m_surfaceFormat;
QMutex m_mutex;
QWaitCondition m_wait;
DirectShowSampleScheduler m_sampleScheduler;
};
#endif