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Commit f1a9f303 authored by Hugo Beauzee-Luyssen's avatar Hugo Beauzee-Luyssen
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Added documentation in GenericRenderer.h

parent f1ad9247
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src/Renderer/GenericRenderer.h
View file @ f1a9f303
......@@ -31,6 +31,9 @@
#include "VLCMediaPlayer.h"
#include "MainWorkflow.h"
/**
* \class Common base for every renderer.
*/
class GenericRenderer : public QObject
{
Q_OBJECT
......@@ -48,55 +51,100 @@ public:
delete m_mediaPlayer;
}
virtual void setRenderWidget( QWidget* renderWidget )
/**
* \brief Set the widget used for rendering the output.
* \param renderWidget The widget to use for render.
* \sa setPreviewLabel( QLabel* )
*/
void setRenderWidget( QWidget* renderWidget )
{
m_mediaPlayer->setDrawable( renderWidget->winId() );
m_renderWidget = renderWidget;
}
virtual void setPreviewLabel( QLabel* previewLabel )
/**
* \brief Sets the label on which a preview will be rendered.
*
* A preview is basically a snapshot of the video, to know what's about to beeing
* rendered.
* \param previewLabel The QLabel to use for print the preview.
* \sa setRenderWidget( QWidget* )
*/
void setPreviewLabel( QLabel* previewLabel )
{
m_previewLabel = previewLabel;
}
virtual void togglePlayPause( bool forcePause = false ) = 0;
/**
* \brief Play or pause the media.
*
* This method is renderer dependant. It has to be implemented in the
* underlying renderer implementation.
* When this method is called :
* - if the render has not started and forcePause is false, the render is started
* - if the render has not started and forcePause is true, nothing happens.
* - if the render has started and is not paused, the render will pause
* - if the render has started, and is paused, the render will unpause if
* forcePause is false.
* \param forcePause Will force the pause if true.
* \sa stop()
*/
virtual void togglePlayPause( bool forcePause = false ) = 0;
/**
* \brief Render the next frame
* \brief Render the next frame
* \sa previousFrame()
*/
virtual void nextFrame() = 0;
/**
* \brief Render the previous frame
* \brief Render the previous frame
* \sa nextFrame();
*/
virtual void previousFrame() = 0;
/**
* \brief Stop the renderer
* \brief Stop the renderer.
* \sa togglePlayPause( bool );
*/
virtual void stop() = 0;
/**
* \brief Return the length in milliseconds
* \brief Return the length in milliseconds
* \return The length of the underlying rendered target in milliseconds
* \sa getLength()
*/
virtual qint64 getLengthMs() const = 0;
/**
* \brief Return the current frame number
* \brief Return the current frame number
* \return The current frame
*/
virtual qint64 getCurrentFrame() const = 0;
/**
* \brief Return the number of frames per second
* \brief Return the number of frames per second
* \return The current fps
*/
virtual float getFps() const = 0;
/**
* \brief Returns the currently rendered media.
*
* This method is provided for genericity between renderers, but should never
* beeing called from something else than a ClipRenderer
* \return The currently rendered Media
* \todo This method should not be here, as it is not generic at all.
*/
virtual Media* getMedia() const
{
return 0;
}
/**
* \brief Return the length in frames
* \warning The returned value may not be accurate
* \brief Return the length in frames
* \warning The returned value may not be accurate as it depends on FPS, that
* can be badly computed
* \return The length that has to be rendered in frames
* \sa getLengthMs()
*/
qint64 getLength() const
{
......@@ -104,7 +152,8 @@ public:
}
/**
* \brief Return true if the renderer is paused
* \brief Return true if the renderer is paused
* \return true if the renderer is paused. false otherwise.
*/
bool isPaused() const
{
......@@ -112,7 +161,10 @@ public:
}
/**
* \brief Return true if the renderer is currently rendering
* \brief Return true if the renderer is currently rendering.
* \return true if the renderer is currently rendering. false otherwise.
* Note that a paused renderer is still rendering
* \sa isPaused()
*/
bool isRendering() const
{
......@@ -120,37 +172,102 @@ public:
}
protected:
/**
* \brief The media player that will be used for rendering
*/
LibVLCpp::MediaPlayer* m_mediaPlayer;
/**
* \brief This flag allows us to know if the render is paused
* or not, without using libvlc, especially for the render preview.
* If the video is stopped, then this flag will be equal to false
* \warning This is not thread safe.
* \sa isPaused()
*/
bool m_paused;
/**
* \brief Will be equal to true if a render has been started, even if it paused.
* \brief Will be equal to true if a render has been started, even if it paused.
* \sa isRendering()
*/
bool m_isRendering;
/**
* \brief The QWidget on which we will render.
* \sa setRenderWidget( QWidget* );
*/
QWidget* m_renderWidget;
/**
* \brief The QLabel used for displaying preview
* \sa setPreviewLabel();
*/
QLabel* m_previewLabel;
public slots:
/**
* \brief This SLOT has to be called when the render ends.
*/
virtual void __endReached() = 0;
virtual void setClip( Clip* ) = 0;
virtual void setMedia( Media* ) = 0;
virtual void mediaUnloaded( const QUuid& ) = 0;
virtual void previewWidgetCursorChanged( qint64 ) = 0;
/**
* \brief Set the Clip to render
* \param clip The clip to render
* \warning This must only be called from a ClipRenderer implementation
* \todo This method shouldn't be here, as it is not generic at all.
*/
virtual void setClip( Clip* clip ) = 0;
/**
* \brief Set the Media to render.
* \param media The media to render.
* \warning This must only be called from a ClipRenderer implementation
* \todo This method shouldn't be here, as it is not generic at all.
*/
virtual void setMedia( Media* media ) = 0;
/**
* \brief Handle a media unloading. Mainly, this should stop the render
* using this media if any.
* \param uuid The unloaded media uuid
* \warning This must only be called from a ClipRenderer implementation
* \todo This method shouldn't be here, as it is not generic at all.
*/
virtual void mediaUnloaded( const QUuid& uuid ) = 0;
/**
* \brief This SLOT will be called when the time cursor has changed.
*
* This mainly means that the current rendered frame should change.
* \param newFrame The new frame to render from.
*/
virtual void previewWidgetCursorChanged( qint64 newFrame ) = 0;
signals:
/**
* \brief This signal means the render just finished, and has been stoped.
* \sa endReached()
*/
void stopped();
/**
* \brief Emmited when the render has been paused.
* \sa playing()
*/
void paused();
/**
* \brief Emmited when the renderer has started to render, and has been unpaused.
* \sa paused()
*/
void playing();
void frameChanged( qint64, MainWorkflow::FrameChangedReason );
/**
* \brief Emmited when rendered frame has been changed.
* \param newFrame The new current frame
* \param reason The reason for changing frame
*/
void frameChanged( qint64 newFrame,
MainWorkflow::FrameChangedReason reason );
/**
* \brief Emmited when render end is reached.
*
* This should be emmited just before stopped
* \sa stopped();
*/
void endReached();
};
......
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