Class videocomposer::WaylandDisplay

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• #include <WaylandDisplay.h>

Inherits the following classes: videocomposer::DisplayBackend

Public Functions

Type	Name
	WaylandDisplay ()
virtual void	clearCurrent () override
virtual void	closeWindow () override
virtual void *	getContext () override
virtual EGLDisplay	getEGLDisplay () override const
virtual PFNEGLCREATEIMAGEKHRPROC	getEglCreateImageKHR () override const
virtual PFNEGLDESTROYIMAGEKHRPROC	getEglDestroyImageKHR () override const
virtual bool	getFullscreen () override const
virtual PFNGLEGLIMAGETARGETTEXTURE2DOESPROC	getGlEGLImageTargetTexture2DOES () override const
virtual bool	getOnTop () override const
virtual OpenGLRenderer *	getRenderer () override
virtual VADisplay	getVADisplay () override const
virtual void	getWindowPos (int * x, int * y) override const
virtual void	getWindowSize (unsigned int * width, unsigned int * height) override const
virtual void	handleEvents () override
virtual bool	hasVaapiSupport () override const
virtual bool	isWindowOpen () override const
virtual void	makeCurrent () override
virtual bool	openWindow () override
virtual void	render (LayerManager * layerManager, OSDManager * osdManager=nullptr) override
virtual void	resize (unsigned int width, unsigned int height) override
virtual void	setFullscreen (int action) override
virtual void	setOnTop (int action) override
virtual void	setPosition (int x, int y) override
virtual bool	supportsMultiDisplay () override const
virtual void	swapBuffers () override
virtual	~WaylandDisplay ()

Public Functions inherited from videocomposer::DisplayBackend

See videocomposer::DisplayBackend

Type	Name
virtual void	clearCurrent ()
virtual void	closeWindow () = 0
virtual bool	configureOutputBlend (const std::string & outputName, float left, float right, float top, float bottom, float gamma=2.2f)
virtual bool	configureOutputRegion (const std::string & outputName, int canvasX, int canvasY, int canvasWidth=0, int canvasHeight=0)
virtual void *	getContext ()
virtual EGLDisplay	getEGLDisplay () const
virtual PFNEGLCREATEIMAGEKHRPROC	getEglCreateImageKHR () const
virtual PFNEGLDESTROYIMAGEKHRPROC	getEglDestroyImageKHR () const
virtual bool	getFullscreen () const = 0
virtual PFNGLEGLIMAGETARGETTEXSTORAGEEXTPROC	getGlEGLImageTargetTexStorageEXT () const
virtual PFNGLEGLIMAGETARGETTEXTURE2DOESPROC	getGlEGLImageTargetTexture2DOES () const
virtual bool	getOnTop () const = 0
virtual size_t	getOutputCount () const
virtual std::vector< OutputInfo >	getOutputs () const
virtual OpenGLRenderer *	getRenderer ()
virtual VADisplay	getVADisplay () const
virtual void	getWindowPos (int * x, int * y) const = 0
virtual void	getWindowSize (unsigned int * width, unsigned int * height) const = 0
virtual void	handleEvents () = 0
virtual bool	hasFatalError () const
virtual bool	hasVaapiSupport () const
virtual bool	isCaptureEnabled () const
virtual bool	isDesktopGL () const
virtual bool	isWindowOpen () const = 0
virtual bool	loadConfiguration (const std::string & path="")
virtual void	makeCurrent ()
virtual bool	openWindow () = 0
virtual void	render (LayerManager * layerManager, OSDManager * osdManager=nullptr) = 0
virtual void	resize (unsigned int width, unsigned int height) = 0
virtual bool	saveConfiguration (const std::string & path="")
virtual void	setCaptureEnabled (bool enabled, int width=0, int height=0)
virtual void	setFullscreen (int action) = 0
virtual void	setOnTop (int action) = 0
virtual bool	setOutputMode (const std::string & outputName, int width, int height, double refresh=0.0)
virtual void	setOutputSinkManager (class OutputSinkManager * sinkManager)
virtual void	setPosition (int x, int y) = 0
virtual bool	setResolutionMode (const std::string & mode)
virtual void	setVideoFramerate (double fps)
virtual bool	supportsMultiDisplay () const = 0
virtual void	swapBuffers ()
virtual	~DisplayBackend () = default

Public Static Functions

Type	Name
void	registryHandleGlobal (void * data, struct wl_registry * registry, uint32_t name, const char * interface, uint32_t version)
void	registryHandleGlobalRemove (void * data, struct wl_registry * registry, uint32_t name)
void	xdgSurfaceConfigure (void * data, struct xdg_surface * xdg_surface, uint32_t serial)
void	xdgToplevelClose (void * data, struct xdg_toplevel * xdg_toplevel)
void	xdgToplevelConfigure (void * data, struct xdg_toplevel * xdg_toplevel, int32_t width, int32_t height, ::wl_array * states)
void	xdgWmBasePing (void * data, struct xdg_wm_base * xdg_wm_base, uint32_t serial)

Detailed Description

WaylandDisplay - Wayland-based display backend with EGL/OpenGL (Linux only)

Implements DisplayBackend using Wayland + EGL + OpenGL on Linux. Supports VAAPI zero-copy via DMA-BUF import using zwp_linux_dmabuf_v1 protocol.

Note: This backend uses Wayland for windowing and EGL for OpenGL context. For X11 systems, use X11Display instead.

Public Functions Documentation

function WaylandDisplay

videocomposer::WaylandDisplay::WaylandDisplay () 

---

function clearCurrent

virtual void videocomposer::WaylandDisplay::clearCurrent () override

Clear the current OpenGL context

Implements videocomposer::DisplayBackend::clearCurrent

---

function closeWindow

virtual void videocomposer::WaylandDisplay::closeWindow () override

Close display window

Implements videocomposer::DisplayBackend::closeWindow

---

function getContext

virtual void * videocomposer::WaylandDisplay::getContext () override

Get OpenGL context (for OpenGL backends)

Returns:

Pointer to context, or nullptr if not applicable

Implements videocomposer::DisplayBackend::getContext

---

function getEGLDisplay

inline virtual EGLDisplay videocomposer::WaylandDisplay::getEGLDisplay () override const

Get EGL display (for VAAPI zero-copy interop)

Returns:

EGL display handle, or nullptr if not available

Implements videocomposer::DisplayBackend::getEGLDisplay

---

function getEglCreateImageKHR

inline virtual PFNEGLCREATEIMAGEKHRPROC videocomposer::WaylandDisplay::getEglCreateImageKHR () override const

Get EGL extension function pointers (for VaapiInterop)

Implements videocomposer::DisplayBackend::getEglCreateImageKHR

---

function getEglDestroyImageKHR

inline virtual PFNEGLDESTROYIMAGEKHRPROC videocomposer::WaylandDisplay::getEglDestroyImageKHR () override const

Implements videocomposer::DisplayBackend::getEglDestroyImageKHR

---

function getFullscreen

virtual bool videocomposer::WaylandDisplay::getFullscreen () override const

Get fullscreen state

Returns:

true if fullscreen, false otherwise

Implements videocomposer::DisplayBackend::getFullscreen

---

function getGlEGLImageTargetTexture2DOES

inline virtual PFNGLEGLIMAGETARGETTEXTURE2DOESPROC videocomposer::WaylandDisplay::getGlEGLImageTargetTexture2DOES () override const

Implements videocomposer::DisplayBackend::getGlEGLImageTargetTexture2DOES

---

function getOnTop

virtual bool videocomposer::WaylandDisplay::getOnTop () override const

Get always-on-top state

Returns:

true if on top, false otherwise

Implements videocomposer::DisplayBackend::getOnTop

---

function getRenderer

inline virtual OpenGLRenderer * videocomposer::WaylandDisplay::getRenderer () override

Get the OpenGL renderer

Returns:

Reference to the renderer, or nullptr if not initialized

Implements videocomposer::DisplayBackend::getRenderer

---

function getVADisplay

inline virtual VADisplay videocomposer::WaylandDisplay::getVADisplay () override const

Get VAAPI display (shared between decoder and EGL interop)

Returns:

VAAPI display handle, or nullptr if not available

Implements videocomposer::DisplayBackend::getVADisplay

---

function getWindowPos

virtual void videocomposer::WaylandDisplay::getWindowPos (
    int * x,
    int * y
) override const

Get window position

Parameters:

• x Output X position
• y Output Y position

Implements videocomposer::DisplayBackend::getWindowPos

---

function getWindowSize

virtual void videocomposer::WaylandDisplay::getWindowSize (
    unsigned int * width,
    unsigned int * height
) override const

Get window size

Parameters:

• width Output width
• height Output height

Implements videocomposer::DisplayBackend::getWindowSize

---

function handleEvents

virtual void videocomposer::WaylandDisplay::handleEvents () override

Handle window/display events Should be called regularly from main loop

Implements videocomposer::DisplayBackend::handleEvents

---

function hasVaapiSupport

inline virtual bool videocomposer::WaylandDisplay::hasVaapiSupport () override const

Check if backend supports VAAPI hardware decode

Returns:

true if VAAPI is supported

Implements videocomposer::DisplayBackend::hasVaapiSupport

---

function isWindowOpen

virtual bool videocomposer::WaylandDisplay::isWindowOpen () override const

Check if window is open

Returns:

true if open, false otherwise

Implements videocomposer::DisplayBackend::isWindowOpen

---

function makeCurrent

virtual void videocomposer::WaylandDisplay::makeCurrent () override

Make this display's OpenGL context current Required for backends that support OpenGL rendering

Implements videocomposer::DisplayBackend::makeCurrent

---

function openWindow

virtual bool videocomposer::WaylandDisplay::openWindow () override

Open/create display window

Returns:

true on success, false on failure

Implements videocomposer::DisplayBackend::openWindow

---

function render

virtual void videocomposer::WaylandDisplay::render (
    LayerManager * layerManager,
    OSDManager * osdManager=nullptr
) override

Render layers to display

Parameters:

• layerManager Layer manager containing all layers to render
• osdManager Optional OSD manager for on-screen display (can be nullptr)

Implements videocomposer::DisplayBackend::render

---

function resize

virtual void videocomposer::WaylandDisplay::resize (
    unsigned int width,
    unsigned int height
) override

Resize window

Parameters:

• width New width
• height New height

Implements videocomposer::DisplayBackend::resize

---

function setFullscreen

virtual void videocomposer::WaylandDisplay::setFullscreen (
    int action
) override

Set fullscreen mode

Parameters:

• action 0=windowed, 1=fullscreen, 2=toggle

Implements videocomposer::DisplayBackend::setFullscreen

---

function setOnTop

virtual void videocomposer::WaylandDisplay::setOnTop (
    int action
) override

Set always-on-top

Parameters:

• action 0=normal, 1=ontop, 2=toggle

Implements videocomposer::DisplayBackend::setOnTop

---

function setPosition

virtual void videocomposer::WaylandDisplay::setPosition (
    int x,
    int y
) override

Set window position

Parameters:

• x X position
• y Y position

Implements videocomposer::DisplayBackend::setPosition

---

function supportsMultiDisplay

inline virtual bool videocomposer::WaylandDisplay::supportsMultiDisplay () override const

Check if backend supports multi-display

Returns:

true if supported, false otherwise

Implements videocomposer::DisplayBackend::supportsMultiDisplay

---

function swapBuffers

virtual void videocomposer::WaylandDisplay::swapBuffers () override

Swap/present buffers (for startup splash on X11/Wayland). Default no-op; DRM uses per-surface page flips.

Implements videocomposer::DisplayBackend::swapBuffers

---

function ~WaylandDisplay

virtual videocomposer::WaylandDisplay::~WaylandDisplay () 

---

Public Static Functions Documentation

function registryHandleGlobal

static void videocomposer::WaylandDisplay::registryHandleGlobal (
    void * data,
    struct wl_registry * registry,
    uint32_t name,
    const char * interface,
    uint32_t version
) 

---

function registryHandleGlobalRemove

static void videocomposer::WaylandDisplay::registryHandleGlobalRemove (
    void * data,
    struct wl_registry * registry,
    uint32_t name
) 

---

function xdgSurfaceConfigure

static void videocomposer::WaylandDisplay::xdgSurfaceConfigure (
    void * data,
    struct xdg_surface * xdg_surface,
    uint32_t serial
) 

---

function xdgToplevelClose

static void videocomposer::WaylandDisplay::xdgToplevelClose (
    void * data,
    struct xdg_toplevel * xdg_toplevel
) 

---

function xdgToplevelConfigure

static void videocomposer::WaylandDisplay::xdgToplevelConfigure (
    void * data,
    struct xdg_toplevel * xdg_toplevel,
    int32_t width,
    int32_t height,
    ::wl_array * states
) 

---

function xdgWmBasePing

static void videocomposer::WaylandDisplay::xdgWmBasePing (
    void * data,
    struct xdg_wm_base * xdg_wm_base,
    uint32_t serial
) 

---

---

The documentation for this class was generated from the following file src/cuems_videocomposer/cpp/display/WaylandDisplay.h