Open CASCADE Technology  7.4.1.dev
Public Member Functions | Protected Attributes
Media_CodecContext Class Reference

AVCodecContext wrapper - the coder/decoder holder. More...

#include <Media_CodecContext.hxx>

Inheritance diagram for Media_CodecContext:
Inheritance graph
[legend]

Public Member Functions

 Media_CodecContext ()
 Constructor. More...
 
virtual ~Media_CodecContext ()
 Destructor. More...
 
AVCodecContext * Context () const
 Return context. More...
 
bool Init (const AVStream &theStream, double thePtsStartBase, int theNbThreads=-1)
 Open codec specified within the stream. More...
 
bool Init (const AVStream &theStream, double thePtsStartBase, int theNbThreads, int theCodecId)
 Open codec. More...
 
void Close ()
 Close input. More...
 
int SizeX () const
 
int SizeY () const
 
int StreamIndex () const
 Return stream index. More...
 
void Flush ()
 avcodec_flush_buffers() wrapper. More...
 
bool CanProcessPacket (const Handle< Media_Packet > &thePacket) const
 Return true if packet belongs to this stream. More...
 
bool SendPacket (const Handle< Media_Packet > &thePacket)
 avcodec_send_packet() wrapper. More...
 
bool ReceiveFrame (const Handle< Media_Frame > &theFrame)
 avcodec_receive_frame() wrapper. More...
 
- Public Member Functions inherited from Standard_Transient
 Standard_Transient ()
 Empty constructor. More...
 
 Standard_Transient (const Standard_Transient &)
 Copy constructor – does nothing. More...
 
Standard_Transientoperator= (const Standard_Transient &)
 Assignment operator, needed to avoid copying reference counter. More...
 
virtual ~Standard_Transient ()
 Destructor must be virtual. More...
 
virtual void Delete () const
 Memory deallocator for transient classes. More...
 
virtual const opencascade::handle< Standard_Type > & DynamicType () const
 Returns a type descriptor about this object. More...
 
Standard_Boolean IsInstance (const opencascade::handle< Standard_Type > &theType) const
 Returns a true value if this is an instance of Type. More...
 
Standard_Boolean IsInstance (const Standard_CString theTypeName) const
 Returns a true value if this is an instance of TypeName. More...
 
Standard_Boolean IsKind (const opencascade::handle< Standard_Type > &theType) const
 Returns true if this is an instance of Type or an instance of any class that inherits from Type. Note that multiple inheritance is not supported by OCCT RTTI mechanism. More...
 
Standard_Boolean IsKind (const Standard_CString theTypeName) const
 Returns true if this is an instance of TypeName or an instance of any class that inherits from TypeName. Note that multiple inheritance is not supported by OCCT RTTI mechanism. More...
 
Standard_TransientThis () const
 Returns non-const pointer to this object (like const_cast). For protection against creating handle to objects allocated in stack or call from constructor, it will raise exception Standard_ProgramError if reference counter is zero. More...
 
Standard_Integer GetRefCount () const
 Get the reference counter of this object. More...
 
void IncrementRefCounter () const
 Increments the reference counter of this object. More...
 
Standard_Integer DecrementRefCounter () const
 Decrements the reference counter of this object; returns the decremented value. More...
 

Protected Attributes

AVCodecContext * myCodecCtx
 codec context More...
 
AVCodec * myCodec
 opened codec More...
 
double myPtsStartBase
 starting PTS in context More...
 
double myPtsStartStream
 starting PTS in the stream More...
 
double myTimeBase
 stream timebase More...
 
int myStreamIndex
 stream index More...
 
float myPixelAspectRatio
 pixel aspect ratio More...
 

Additional Inherited Members

- Public Types inherited from Standard_Transient
typedef void base_type
 Returns a type descriptor about this object. More...
 
- Static Public Member Functions inherited from Standard_Transient
static const char * get_type_name ()
 Returns a type descriptor about this object. More...
 
static const opencascade::handle< Standard_Type > & get_type_descriptor ()
 Returns type descriptor of Standard_Transient class. More...
 

Detailed Description

AVCodecContext wrapper - the coder/decoder holder.

Constructor & Destructor Documentation

◆ Media_CodecContext()

Media_CodecContext::Media_CodecContext ( )

Constructor.

◆ ~Media_CodecContext()

virtual Media_CodecContext::~Media_CodecContext ( )
virtual

Destructor.

Member Function Documentation

◆ CanProcessPacket()

bool Media_CodecContext::CanProcessPacket ( const Handle< Media_Packet > &  thePacket) const

Return true if packet belongs to this stream.

◆ Close()

void Media_CodecContext::Close ( )

Close input.

◆ Context()

AVCodecContext* Media_CodecContext::Context ( ) const
inline

Return context.

◆ Flush()

void Media_CodecContext::Flush ( )

avcodec_flush_buffers() wrapper.

◆ Init() [1/2]

bool Media_CodecContext::Init ( const AVStream &  theStream,
double  thePtsStartBase,
int  theNbThreads = -1 
)

Open codec specified within the stream.

Parameters
theStreamstream to open
thePtsStartBasePTS start in seconds
theNbThreadsamount of threads to use for AVMEDIA_TYPE_VIDEO stream; -1 means OSD_Parallel::NbLogicalProcessors(), 0 means auto by FFmpeg itself >0 means specified number of threads (decoder should support multi-threading to take effect)

◆ Init() [2/2]

bool Media_CodecContext::Init ( const AVStream &  theStream,
double  thePtsStartBase,
int  theNbThreads,
int  theCodecId 
)

Open codec.

Parameters
theStreamstream to open
thePtsStartBasePTS start in seconds
theNbThreadsamount of threads to use for AVMEDIA_TYPE_VIDEO stream; -1 means OSD_Parallel::NbLogicalProcessors(), 0 means auto by FFmpeg itself >0 means specified number of threads (decoder should support multi-threading to take effect)
theCodecIdcodec (AVCodecID) to open

◆ ReceiveFrame()

bool Media_CodecContext::ReceiveFrame ( const Handle< Media_Frame > &  theFrame)

avcodec_receive_frame() wrapper.

◆ SendPacket()

bool Media_CodecContext::SendPacket ( const Handle< Media_Packet > &  thePacket)

avcodec_send_packet() wrapper.

◆ SizeX()

int Media_CodecContext::SizeX ( ) const
Returns
source frame width

◆ SizeY()

int Media_CodecContext::SizeY ( ) const
Returns
source frame height

◆ StreamIndex()

int Media_CodecContext::StreamIndex ( ) const
inline

Return stream index.

Field Documentation

◆ myCodec

AVCodec* Media_CodecContext::myCodec
protected

opened codec

◆ myCodecCtx

AVCodecContext* Media_CodecContext::myCodecCtx
protected

codec context

◆ myPixelAspectRatio

float Media_CodecContext::myPixelAspectRatio
protected

pixel aspect ratio

◆ myPtsStartBase

double Media_CodecContext::myPtsStartBase
protected

starting PTS in context

◆ myPtsStartStream

double Media_CodecContext::myPtsStartStream
protected

starting PTS in the stream

◆ myStreamIndex

int Media_CodecContext::myStreamIndex
protected

stream index

◆ myTimeBase

double Media_CodecContext::myTimeBase
protected

stream timebase


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