openshot::WriterBase Class Reference

This abstract class is the base class, used by writers. Writers are types of classes that encode video, audio, and image files. More...

#include <WriterBase.h>

Inheritance diagram for openshot::WriterBase:

Collaboration diagram for openshot::WriterBase:

Public Member Functions
void	CopyReaderInfo (openshot::ReaderBase *reader)
	This method copy's the info struct of a reader, and sets the writer with the same info. More...
void	DisplayInfo (std::ostream *out=&std::cout)
	Display file information in the standard output stream (stdout) More...
virtual bool	IsOpen ()=0
	Determine if writer is open or closed. More...
std::string	Json () const
	Generate JSON string of this object. More...
Json::Value	JsonValue () const
	Generate Json::Value for this object. More...
virtual void	Open ()=0
	Open the writer (and start initializing streams) More...
void	SetJson (const std::string value)
	Load JSON string into this object. More...
void	SetJsonValue (const Json::Value root)
	Load Json::Value into this object. More...
virtual void	WriteFrame (openshot::ReaderBase *reader, int64_t start, int64_t length)=0
	This method is required for all derived classes of WriterBase. Write a block of frames from a reader. More...
virtual void	WriteFrame (std::shared_ptr< openshot::Frame > frame)=0
	This method is required for all derived classes of WriterBase. Write a Frame to the video file. More...
	WriterBase ()
	Constructor for WriterBase class, many things are initialized here. More...
virtual	~WriterBase ()=default

Public Attributes
WriterInfo	info
	Information about the current media file. More...

Detailed Description

This abstract class is the base class, used by writers. Writers are types of classes that encode video, audio, and image files.

The only requirements for a 'writer', are to derive from this base class, and implement the WriteFrame method.

Definition at line 69 of file WriterBase.h.

Constructor & Destructor Documentation

WriterBase()

WriterBase::WriterBase

(

)

Constructor for WriterBase class, many things are initialized here.

Definition at line 25 of file WriterBase.cpp.

~WriterBase()

virtual openshot::WriterBase::~WriterBase ( )

virtualdefault

Member Function Documentation

CopyReaderInfo()

void WriterBase::CopyReaderInfo

(

openshot::ReaderBase *

reader

)

This method copy's the info struct of a reader, and sets the writer with the same info.

Parameters

reader

The source reader to copy

Definition at line 56 of file WriterBase.cpp.

Referenced by openshot::ChunkWriter::ChunkWriter().

DisplayInfo()

void WriterBase::DisplayInfo

(

std::ostream *

out = &std::cout

)

Display file information in the standard output stream (stdout)

Definition at line 91 of file WriterBase.cpp.

IsOpen()

virtual bool openshot::WriterBase::IsOpen ( )

pure virtual

Determine if writer is open or closed.

Implemented in openshot::FFmpegWriter, openshot::ChunkWriter, and openshot::ImageWriter.

Json()

std::string WriterBase::Json

(

)

const

Generate JSON string of this object.

Definition at line 131 of file WriterBase.cpp.

JsonValue()

Json::Value WriterBase::JsonValue

(

)

const

Generate Json::Value for this object.

Definition at line 138 of file WriterBase.cpp.

Referenced by Json().

Open()

virtual void openshot::WriterBase::Open ( )

pure virtual

Open the writer (and start initializing streams)

Implemented in openshot::FFmpegWriter, openshot::ChunkWriter, and openshot::ImageWriter.

SetJson()

void WriterBase::SetJson

(

const std::string

value

)

Load JSON string into this object.

Definition at line 187 of file WriterBase.cpp.

SetJsonValue()

void WriterBase::SetJsonValue

(

const Json::Value

root

)

Load Json::Value into this object.

Definition at line 204 of file WriterBase.cpp.

Referenced by SetJson().

WriteFrame() [1/2]

virtual void openshot::WriterBase::WriteFrame ( openshot::ReaderBase *  reader, int64_t  start, int64_t  length  )

pure virtual

This method is required for all derived classes of WriterBase. Write a block of frames from a reader.

Implemented in openshot::ImageWriter, openshot::FFmpegWriter, and openshot::ChunkWriter.

WriteFrame() [2/2]

virtual void openshot::WriterBase::WriteFrame ( std::shared_ptr< openshot::Frame >  frame )

pure virtual

This method is required for all derived classes of WriterBase. Write a Frame to the video file.

Implemented in openshot::FFmpegWriter, and openshot::ChunkWriter.

Member Data Documentation

info

WriterInfo openshot::WriterBase::info

Information about the current media file.

Definition at line 76 of file WriterBase.h.

Referenced by openshot::ChunkWriter::ChunkWriter(), CopyReaderInfo(), DisplayInfo(), openshot::FFmpegWriter::FFmpegWriter(), openshot::ImageWriter::ImageWriter(), JsonValue(), openshot::FFmpegWriter::Open(), openshot::FFmpegWriter::PrepareStreams(), openshot::FFmpegWriter::SetAudioOptions(), SetJsonValue(), openshot::FFmpegWriter::SetOption(), openshot::ImageWriter::SetVideoOptions(), openshot::FFmpegWriter::SetVideoOptions(), openshot::ImageWriter::WriteFrame(), openshot::ChunkWriter::WriteFrame(), openshot::FFmpegWriter::WriteHeader(), WriterBase(), and openshot::FFmpegWriter::WriteTrailer().

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

• WriterBase.h
• WriterBase.cpp