Rx::FileIO::CFFmpegDec_Impl Class Reference

Detailed Description

Video Decode Codec.

Inherits Rx::FileIO::IVideoDecode, and Rx::FileIO::IParameterVideoDecode.

Public Member Functions
	CFFmpegDec_Impl ()
	Default constructor. More...
	~CFFmpegDec_Impl ()
	Destructor. More...
virtual void	Close ()
	Frees all memory allocated by Open() and finalizes the FFMpeg libraries. More...
virtual void	Destroy ()
	Destroys this object. More...
virtual bool	GetNextImage (Interop::Runtime28::IImage *pTrgImg)
	Get the next frame from the video stream as IImage. More...
virtual void	Open (const CRxString &sxInputVideoPath)
	Opens the video file and initialize/load the FFMpeg libraries. Registers all needed formats and setups the video decoder. More...

Protected Member Functions
void	ConvertToRxImageFormat (CRxImageFormat &xImageFormat, const AVCodecContext *pxAVCodecContext)
	Converts a AVPixelFormat to a raytrix pixel format and stores it with its related data type inside a ImageFormat. More...
int	Decode (AVCodecContext *xAVCodecContext, AVFrame *xAVOrgFrame, AVPacket *xAVPkt, Interop::Runtime28::IImage *pTrgImg, int &iGotFrame)
	Tries to decode a frame from the video stream. iGotFrame indicates if a frame was decoded (1 = frame decoded, 0 = no frame found/decoded). More...
int	OpenCodecContext (int &iStreamIndex, AVFormatContext *pxAVFormatContext)
	Finds the best video stream in the video file and opens the codec used for the decoding. More...

Constructor & Destructor Documentation

Rx::FileIO::CFFmpegDec_Impl::CFFmpegDec_Impl

(

)

Default constructor.

Rx::FileIO::CFFmpegDec_Impl::~CFFmpegDec_Impl

(

)

Destructor.

Member Function Documentation

virtual void Rx::FileIO::CFFmpegDec_Impl::Close ( )

virtual

Frees all memory allocated by Open() and finalizes the FFMpeg libraries.

Implements Rx::FileIO::IVideoDecode.

void Rx::FileIO::CFFmpegDec_Impl::ConvertToRxImageFormat ( CRxImageFormat &  xImageFormat, const AVCodecContext *  pxAVCodecContext  )

protected

Converts a AVPixelFormat to a raytrix pixel format and stores it with its related data type inside a ImageFormat.

Parameters

xImageFormat	[out] The image format describing the format of the output images.
pxAVCodecContext	[in] The AVCodecContext containing the pixel format.

int Rx::FileIO::CFFmpegDec_Impl::Decode ( AVCodecContext *  xAVCodecContext, AVFrame *  xAVOrgFrame, AVPacket *  xAVPkt, Interop::Runtime28::IImage *  pTrgImg, int &  iGotFrame  )

protected

Tries to decode a frame from the video stream. iGotFrame indicates if a frame was decoded (1 = frame decoded, 0 = no frame found/decoded).

Parameters

xAVCodecContext	[in] The AVCodecContext.
xAVOrgFrame	[in] AVFrame for the orginal non scaled data.
xAVPkt	[in] AVPacket containg the frame data.
pTrgImg	[out] Target memory.
iGotFrame	[out] Identifier if a frame was decoded.

Returns

The length of the decoded frame on success or -1 when the frame was not part of the video stream.

virtual void Rx::FileIO::CFFmpegDec_Impl::Destroy ( )

virtual

Destroys this object.

Implements Rx::FileIO::IVideoDecode.

virtual bool Rx::FileIO::CFFmpegDec_Impl::GetNextImage ( Interop::Runtime28::IImage *  pTrgImg )

virtual

Get the next frame from the video stream as IImage.

Parameters

pTrgImg

[out] The target memory.

Returns

True if the next frame was found and decoded, false otherwise.

Implements Rx::FileIO::IVideoDecode.

virtual void Rx::FileIO::CFFmpegDec_Impl::Open ( const CRxString &  sxInputVideoPath )

virtual

Opens the video file and initialize/load the FFMpeg libraries. Registers all needed formats and setups the video decoder.

Parameters

sxInputVideoPath

[in] The path to the input video file.

Implements Rx::FileIO::IVideoDecode.

int Rx::FileIO::CFFmpegDec_Impl::OpenCodecContext ( int &  iStreamIndex, AVFormatContext *  pxAVFormatContext  )

protected

Finds the best video stream in the video file and opens the codec used for the decoding.

Parameters

iStreamIndex	[out] The index of the best video stream, if found.
pxAVFormatContext	[in] The AVFormatContext.

Returns

0 on success, -1 if no stream was found.