Usage: LoadVideoFile before you want to play any video file. More...

#include <GraphBuilder.h>

Public Member Functions
HRESULT	LoadVideoFile (LPCWSTR wFileName, bool bAudioOn)
	Loads a video file from disk. More...

HRESULT	RunGraph ()
	Start playing the video file This will start playing a stopped video file or a paused video file. More...

HRESULT	PauseGraph ()
	Pause a video file This will pause a playing video file. More...

HRESULT	StopGraph ()
	Stop a video file This will stop a playing video file or a paused video file. More...

HRESULT	Seek (double seekvalue)
	Seek a video file to a given percentage This will not affect the current state of the video file. More...

HRESULT	RestoreDeviceObjects (LPDIRECT3DDEVICE9 pd3dDevice)

HRESULT	InvalidateDeviceObjects ()

double	GetCurrPos ()
	Get the current position of the video file in second. More...

double	GetDuration ()
	Get the length in second of the video file. More...

long	CheckMovieStatus (bool bIsRepeat)
	Check if certain event such as a complete event happens. More...

void	CleanupDShow (void)

int	GetWidth ()
	Get the width of frame size of the video file. More...

int	GetHeight ()
	Get the height of frame size of the video file. More...

LPDIRECT3DTEXTURE9	GetTexture ()
	Update and get the texture of the current frame. More...

bool	IsNeedCreateTexture ()
	Check if the texture has been successfully created. More...

Protected Member Functions
HRESULT	ConnectWMVFile (LPCWSTR wFileName)

HRESULT	ConnectOtherFile (LPCWSTR wFileName)

Protected Attributes
LPDIRECT3DTEXTURE9	m_pTexture

CComPtr< IGraphBuilder >	m_pGB

CComPtr< IMediaControl >	m_pMC

CComPtr< IMediaPosition >	m_pMP

CComPtr< IMediaEvent >	m_pME

IFileSourceFilter *	m_pFileSource

CComPtr< IPin >	m_pPinOut1

CComPtr< IPin >	m_pPinOut0

CComPtr< IBaseFilter >	m_pRenderer1

CTextureRenderer *	m_pRenderer

bool	m_bLocked

bool	m_bAudioOn

Detailed Description

Usage: LoadVideoFile before you want to play any video file.

If you want to load other file, call LoadVideoFile again. When the device gets invalidate or restore, call RestoreDeviceObjects and InvalidateDeviceObjects respectively. The loaded video file will not get lost in this process. So you don't need to reload the file again.

Member Function Documentation

§ CheckMovieStatus()

long CGraphBuilder::CheckMovieStatus ( bool bIsRepeat )

Check if certain event such as a complete event happens.

This will not affect the current state of the video file.

Parameters

bIsRepeat whether to repeat the file from the beginning if it is completed.

Returns: : return the event code if success. If there is no event or an error occurs, this function returns 0;

Remarks: : make sure you have successfully loaded a video file. Otherwise, the function will return 0. If bIsRepeat is set true, this function will automatically reset the playing position to 0.

§ GetCurrPos()

double CGraphBuilder::GetCurrPos ( )

Get the current position of the video file in second.

This will not affect the current state of the video file.

Returns: : return the current second if success, 0 otherwise.

Remarks: : make sure you have successfully loaded a video file. Otherwise, the function will return 0.

§ GetDuration()

double CGraphBuilder::GetDuration ( )

Get the length in second of the video file.

This will not affect the current state of the video file.

Returns: : return the current second if success, 0 otherwise.

Remarks: : make sure you have successfully loaded a video file. Otherwise, the function will return 0.

§ GetHeight()

int CGraphBuilder::GetHeight ( )

Get the height of frame size of the video file.

Returns: : return the height if success. If an error occurs, this function returns 0;

Remarks: : make sure you have successfully loaded a video file. Otherwise, the function will return 0.

§ GetTexture()

LPDIRECT3DTEXTURE9 CGraphBuilder::GetTexture ( )

Update and get the texture of the current frame.

Returns: : return a pointer to the texture. If an error occurs, this function returns NULL.

Remarks: : make sure you have successfully loaded a video file. Otherwise, the function will return NULL.

§ GetWidth()

int CGraphBuilder::GetWidth ( )

Get the width of frame size of the video file.

Returns: : return the width if success. If an error occurs, this function returns 0;

Remarks: : make sure you have successfully loaded a video file. Otherwise, the function will return 0.

§ IsNeedCreateTexture()

bool ParaEngine::CGraphBuilder::IsNeedCreateTexture ( )

inline

Check if the texture has been successfully created.

If not, load the video file again.

Returns: : true if the texture is created, false if not.

§ LoadVideoFile()

HRESULT CGraphBuilder::LoadVideoFile	(	LPCWSTR	wFileName,
		bool	bAudioOn
	)

Loads a video file from disk.

Parameters

wFileName	the input file name, in Unicode
bAudioOn	whether to allow audio output.
pTexMutex	for sharing the texture.

Returns: : return S_OK if success, error code otherwise.

Remarks: : this function will also creates the render texture for the loaded video file.

§ PauseGraph()

HRESULT CGraphBuilder::PauseGraph ( )

Pause a video file This will pause a playing video file.

Returns: : return S_OK if success, error code otherwise.

Remarks: : make sure you have successfully loaded a video file. Otherwise, the function will return E_FAIL or other error codes.

§ RunGraph()

HRESULT CGraphBuilder::RunGraph ( )

Start playing the video file This will start playing a stopped video file or a paused video file.

Returns: : return S_OK if success, error code otherwise.

Remarks: : make sure you have successfully loaded a video file. Otherwise, the function will return E_FAIL or other error codes.

§ Seek()

HRESULT CGraphBuilder::Seek ( double seekvalue )

Seek a video file to a given percentage This will not affect the current state of the video file.

Parameters

seekvalue the percentage of the video file you want to seek to. The range is 0 to 100.

Returns: : return S_OK if success, error code otherwise.

Remarks: : make sure you have successfully loaded a video file. Otherwise, the function will return E_FAIL or other error codes.

§ StopGraph()

HRESULT CGraphBuilder::StopGraph ( )

Stop a video file This will stop a playing video file or a paused video file.

The video position is reset to the beginning.

Returns: : return S_OK if success, error code otherwise.

Remarks: : make sure you have successfully loaded a video file. Otherwise, the function will return E_FAIL or other error codes.

The documentation for this class was generated from the following files:

Client/trunk/ParaEngineClient/Engine/Obsoleted/Video/GraphBuilder.h
Client/trunk/ParaEngineClient/Engine/Obsoleted/Video/GraphBuilder.cpp

Public Member Functions

Protected Member Functions

Protected Attributes

Detailed Description

Member Function Documentation

§ CheckMovieStatus()

§ GetCurrPos()

§ GetDuration()

§ GetHeight()

§ GetTexture()

§ GetWidth()

§ IsNeedCreateTexture()

§ LoadVideoFile()

§ PauseGraph()

§ RunGraph()

§ Seek()

§ StopGraph()