OpenShot Library | libopenshot
0.1.2
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This abstract class is the base class, used by all readers in libopenshot. More...
#include <ReaderBase.h>
Public Member Functions | |
virtual void | Close ()=0 |
Close the reader (and any resources it was consuming) More... | |
void | DisplayInfo () |
Display file information in the standard output stream (stdout) More... | |
void | DrawFrameOnScene (string path, long _graphics_scene_address) |
Test method to draw a bitmap on a Qt QGraphicsScene. More... | |
virtual Cache * | GetCache ()=0 |
Get the cache object used by this reader (note: not all readers use cache) More... | |
virtual tr1::shared_ptr< Frame > | GetFrame (long int number)=0 |
virtual bool | IsOpen ()=0 |
A thread safe version of GetFrame. More... | |
virtual string | Json ()=0 |
Get and Set JSON methods. More... | |
virtual Json::Value | JsonValue ()=0 |
Generate Json::JsonValue for this object. More... | |
virtual string | Name ()=0 |
Return the type name of the class. More... | |
virtual void | Open ()=0 |
Open the reader (and start consuming resources, such as images or video files) More... | |
ReaderBase () | |
Constructor for the base reader, where many things are initialized. More... | |
virtual void | SetJson (string value)=0 throw (InvalidJSON) |
Load JSON string into this object. More... | |
virtual void | SetJsonValue (Json::Value root)=0 |
Load Json::JsonValue into this object. More... | |
Public Attributes | |
ReaderInfo | info |
Information about the current media file. More... | |
Protected Attributes | |
CriticalSection | getFrameCriticalSection |
Section lock for multiple threads. More... | |
CriticalSection | processingCriticalSection |
This abstract class is the base class, used by all readers in libopenshot.
Readers are types of classes that read video, audio, and image files, and return openshot::Frame objects. The only requirements for a 'reader', are to derive from this base class, implement the GetFrame method, and call the InitFileInfo() method.
Definition at line 95 of file ReaderBase.h.
ReaderBase::ReaderBase | ( | ) |
Constructor for the base reader, where many things are initialized.
Definition at line 33 of file ReaderBase.cpp.
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pure virtual |
Close the reader (and any resources it was consuming)
Implemented in openshot::FFmpegReader, openshot::Timeline, openshot::FrameMapper, openshot::ChunkReader, openshot::TextReader, openshot::DecklinkReader, openshot::QtImageReader, openshot::ImageReader, and openshot::DummyReader.
void ReaderBase::DisplayInfo | ( | ) |
Display file information in the standard output stream (stdout)
Definition at line 64 of file ReaderBase.cpp.
void ReaderBase::DrawFrameOnScene | ( | string | path, |
long | _graphics_scene_address | ||
) |
Test method to draw a bitmap on a Qt QGraphicsScene.
Definition at line 230 of file ReaderBase.cpp.
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pure virtual |
Get the cache object used by this reader (note: not all readers use cache)
Implemented in openshot::FFmpegReader, openshot::Timeline, openshot::FrameMapper, openshot::ChunkReader, openshot::TextReader, openshot::DecklinkReader, openshot::QtImageReader, openshot::ImageReader, and openshot::DummyReader.
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pure virtual |
This method is required for all derived classes of ReaderBase, and returns the openshot::Frame object, which contains the image and audio information for that frame of video.
[in] | number | The frame number that is requested. |
Implemented in openshot::FFmpegReader, openshot::Timeline, openshot::FrameMapper, openshot::ChunkReader, openshot::TextReader, openshot::DecklinkReader, openshot::QtImageReader, openshot::ImageReader, and openshot::DummyReader.
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pure virtual |
A thread safe version of GetFrame.
Determine if reader is open or closed
Implemented in openshot::FFmpegReader, openshot::Timeline, openshot::FrameMapper, openshot::ChunkReader, openshot::TextReader, openshot::DecklinkReader, openshot::QtImageReader, openshot::ImageReader, and openshot::DummyReader.
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pure virtual |
Get and Set JSON methods.
Generate JSON string of this object
Implemented in openshot::FFmpegReader, openshot::Timeline, openshot::FrameMapper, openshot::ChunkReader, openshot::TextReader, openshot::DecklinkReader, openshot::QtImageReader, openshot::ImageReader, and openshot::DummyReader.
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pure virtual |
Generate Json::JsonValue for this object.
Implemented in openshot::FFmpegReader, openshot::Timeline, openshot::FrameMapper, openshot::ChunkReader, openshot::TextReader, openshot::DecklinkReader, openshot::QtImageReader, openshot::ImageReader, and openshot::DummyReader.
Definition at line 104 of file ReaderBase.cpp.
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pure virtual |
Return the type name of the class.
Implemented in openshot::FFmpegReader, openshot::Timeline, openshot::FrameMapper, openshot::ChunkReader, openshot::TextReader, openshot::DecklinkReader, openshot::QtImageReader, openshot::ImageReader, and openshot::DummyReader.
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pure virtual |
Open the reader (and start consuming resources, such as images or video files)
Implemented in openshot::FFmpegReader, openshot::Timeline, openshot::FrameMapper, openshot::ChunkReader, openshot::TextReader, openshot::DecklinkReader, openshot::QtImageReader, openshot::ImageReader, and openshot::DummyReader.
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pure virtual |
Load JSON string into this object.
Implemented in openshot::FFmpegReader, openshot::Timeline, openshot::FrameMapper, openshot::ChunkReader, openshot::TextReader, openshot::DecklinkReader, openshot::QtImageReader, openshot::ImageReader, and openshot::DummyReader.
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pure virtual |
Load Json::JsonValue into this object.
Implemented in openshot::FFmpegReader, openshot::Timeline, openshot::FrameMapper, openshot::ChunkReader, openshot::TextReader, openshot::DecklinkReader, openshot::QtImageReader, openshot::ImageReader, and openshot::DummyReader.
Definition at line 153 of file ReaderBase.cpp.
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protected |
Section lock for multiple threads.
Definition at line 99 of file ReaderBase.h.
ReaderInfo openshot::ReaderBase::info |
Information about the current media file.
Definition at line 108 of file ReaderBase.h.
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protected |
Definition at line 100 of file ReaderBase.h.