video.c File Reference

#include "../../SDL_internal.h"
#include "../SDL_sysvideo.h"
#include "sdl_qnx.h"

Include dependency graph for video.c:

Go to the source code of this file.

Functions
static int	videoInit (_THIS)
static void	videoQuit (_THIS)
static int	createWindow (_THIS, SDL_Window *window)
static int	createWindowFramebuffer (_THIS, SDL_Window *window, Uint32 *format, void **pixels, int *pitch)
static int	updateWindowFramebuffer (_THIS, SDL_Window *window, const SDL_Rect *rects, int numrects)
static void	pumpEvents (_THIS)
static void	setWindowSize (_THIS, SDL_Window *window)
static void	showWindow (_THIS, SDL_Window *window)
static void	hideWindow (_THIS, SDL_Window *window)
static void	destroyWindow (_THIS, SDL_Window *window)
static void	deleteDevice (SDL_VideoDevice *device)
static SDL_VideoDevice *	createDevice (int devindex)
static int	available ()

Variables
static screen_context_t	context
static screen_event_t	event
VideoBootStrap	QNX_bootstrap

Function Documentation

static int available ( )

static

Definition at line 356 of file video.c.

Referenced by SDL_VideoInit().

{
    return 1;
}

static SDL_VideoDevice* createDevice ( int  devindex )

static

Creates the QNX video plugin used by SDL.

Parameters

devindex

Unused

Returns

Initialized device if successful, NULL otherwise

Definition at line 321 of file video.c.

References SDL_VideoDevice::CreateSDLWindow, createWindow(), createWindowFramebuffer(), SDL_VideoDevice::CreateWindowFramebuffer, deleteDevice(), SDL_VideoDevice::DestroyWindow, destroyWindow(), device, SDL_VideoDevice::driverdata, SDL_VideoDevice::free, SDL_VideoDevice::GL_CreateContext, SDL_VideoDevice::GL_DeleteContext, SDL_VideoDevice::GL_GetProcAddress, SDL_VideoDevice::GL_LoadLibrary, SDL_VideoDevice::GL_MakeCurrent, SDL_VideoDevice::GL_SetSwapInterval, SDL_VideoDevice::GL_SwapWindow, SDL_VideoDevice::GL_UnloadLibrary, glCreateContext(), glDeleteContext(), glGetProcAddress(), glLoadLibrary(), glMakeCurrent(), glSetSwapInterval(), glSwapWindow(), glUnloadLibrary(), SDL_VideoDevice::HideWindow, hideWindow(), NULL, pumpEvents(), SDL_VideoDevice::PumpEvents, SDL_calloc, SDL_VideoDevice::SetWindowSize, setWindowSize(), SDL_VideoDevice::ShowWindow, showWindow(), updateWindowFramebuffer(), SDL_VideoDevice::UpdateWindowFramebuffer, videoInit(), SDL_VideoDevice::VideoInit, videoQuit(), and SDL_VideoDevice::VideoQuit.

{
    SDL_VideoDevice *device;

    device = (SDL_VideoDevice *)SDL_calloc(1, sizeof(SDL_VideoDevice));
    if (device == NULL) {
        return NULL;
    }

    device->driverdata = NULL;
    device->VideoInit = videoInit;
    device->VideoQuit = videoQuit;
    device->CreateSDLWindow = createWindow;
    device->CreateWindowFramebuffer = createWindowFramebuffer;
    device->UpdateWindowFramebuffer = updateWindowFramebuffer;
    device->SetWindowSize = setWindowSize;
    device->ShowWindow = showWindow;
    device->HideWindow = hideWindow;
    device->PumpEvents = pumpEvents;
    device->DestroyWindow = destroyWindow;

    device->GL_LoadLibrary = glLoadLibrary;
    device->GL_GetProcAddress = glGetProcAddress;
    device->GL_CreateContext = glCreateContext;
    device->GL_SetSwapInterval = glSetSwapInterval;
    device->GL_SwapWindow = glSwapWindow;
    device->GL_MakeCurrent = glMakeCurrent;
    device->GL_DeleteContext = glDeleteContext;
    device->GL_UnloadLibrary = glUnloadLibrary;

    device->free = deleteDevice;
    return device;
}

static int createWindow ( _THIS  , SDL_Window *  window  )

static

Creates a new native Screen window and associates it with the given SDL window.

Parameters

_THIS
window	SDL window to initialize

Returns

0 if successful, -1 on error

Definition at line 71 of file video.c.

References window_impl_t::conf, context, SDL_Window::driverdata, SDL_Window::flags, glGetConfig(), SDL_Window::h, NULL, SDL_calloc, SDL_free, SDL_WINDOW_OPENGL, SDL_Window::w, and window_impl_t::window.

Referenced by createDevice().

{
    window_impl_t   *impl;
    int             size[2];
    int             numbufs;
    int             format;
    int             usage;

    impl = SDL_calloc(1, sizeof(*impl));
    if (impl == NULL) {
        return -1;
    }

    // Create a native window.
    if (screen_create_window(&impl->window, context) < 0) {
        goto fail;
    }

    // Set the native window's size to match the SDL window.
    size[0] = window->w;
    size[1] = window->h;

    if (screen_set_window_property_iv(impl->window, SCREEN_PROPERTY_SIZE,
                                      size) < 0) {
        goto fail;
    }

    if (screen_set_window_property_iv(impl->window, SCREEN_PROPERTY_SOURCE_SIZE,
                                      size) < 0) {
        goto fail;
    }

    // Create window buffer(s).
    if (window->flags & SDL_WINDOW_OPENGL) {
        if (glGetConfig(&impl->conf, &format) < 0) {
            goto fail;
        }
        numbufs = 2;

        usage = SCREEN_USAGE_OPENGL_ES2;
        if (screen_set_window_property_iv(impl->window, SCREEN_PROPERTY_USAGE,
                                          &usage) < 0) {
            return -1;
        }
    } else {
        format = SCREEN_FORMAT_RGBX8888;
        numbufs = 1;
    }

    // Set pixel format.
    if (screen_set_window_property_iv(impl->window, SCREEN_PROPERTY_FORMAT,
                                      &format) < 0) {
        goto fail;
    }

    // Create buffer(s).
    if (screen_create_window_buffers(impl->window, numbufs) < 0) {
        goto fail;
    }

    window->driverdata = impl;
    return 0;

fail:
    if (impl->window) {
        screen_destroy_window(impl->window);
    }

    SDL_free(impl);
    return -1;
}

static int createWindowFramebuffer ( _THIS  , SDL_Window *  window, Uint32 *  format, void **  pixels, int *  pitch  )

static

Gets a pointer to the Screen buffer associated with the given window. Note that the buffer is actually created in createWindow().

Parameters

	_THIS
	window	SDL window to get the buffer for
[out]	pixles	Holds a pointer to the window's buffer
[out]	format	Holds the pixel format for the buffer
[out]	pitch	Holds the number of bytes per line

Returns

0 if successful, -1 on error

Definition at line 154 of file video.c.

References SDL_Window::driverdata, SDL_PIXELFORMAT_RGB888, and window_impl_t::window.

Referenced by createDevice().

{
    window_impl_t   *impl = (window_impl_t *)window->driverdata;
    screen_buffer_t buffer;

    // Get a pointer to the buffer's memory.
    if (screen_get_window_property_pv(impl->window, SCREEN_PROPERTY_BUFFERS,
                                      (void **)&buffer) < 0) {
        return -1;
    }

    if (screen_get_buffer_property_pv(buffer, SCREEN_PROPERTY_POINTER,
                                      pixels) < 0) {
        return -1;
    }

    // Set format and pitch.
    if (screen_get_buffer_property_iv(buffer, SCREEN_PROPERTY_STRIDE,
                                      pitch) < 0) {
        return -1;
    }

    *format = SDL_PIXELFORMAT_RGB888;
    return 0;
}

static void deleteDevice ( SDL_VideoDevice *  device )

static

Frees the plugin object created by createDevice().

Parameters

device

Plugin object to free

Definition at line 310 of file video.c.

References SDL_free.

Referenced by createDevice().

{
    SDL_free(device);
}

static void destroyWindow ( _THIS  , SDL_Window *  window  )

static

Destroys the native window associated with the given SDL window.

Parameters

_THIS
window	SDL window that is being destroyed

Definition at line 295 of file video.c.

References SDL_Window::driverdata, NULL, and window_impl_t::window.

Referenced by createDevice().

{
    window_impl_t   *impl = (window_impl_t *)window->driverdata;

    if (impl) {
        screen_destroy_window(impl->window);
        window->driverdata = NULL;
    }
}

static void hideWindow ( _THIS  , SDL_Window *  window  )

static

Makes the native window associated with the given SDL window invisible.

Parameters

_THIS
window	SDL window to update

Definition at line 280 of file video.c.

References SDL_Window::driverdata, and window_impl_t::window.

Referenced by createDevice().

{
    window_impl_t   *impl = (window_impl_t *)window->driverdata;
    const int       visible = 0;

    screen_set_window_property_iv(impl->window, SCREEN_PROPERTY_VISIBLE,
        &visible);
}

static void pumpEvents ( _THIS  )

static

Runs the main event loop.

Parameters

_THIS

Definition at line 211 of file video.c.

References context, and handleKeyboardEvent().

Referenced by createDevice().

{
    int             type;

    for (;;) {
        if (screen_get_event(context, event, 0) < 0) {
            break;
        }

        if (screen_get_event_property_iv(event, SCREEN_PROPERTY_TYPE, &type)
            < 0) {
            break;
        }

        if (type == SCREEN_EVENT_NONE) {
            break;
        }

        switch (type) {
        case SCREEN_EVENT_KEYBOARD:
            handleKeyboardEvent(event);
            break;

        default:
            break;
        }
    }
}

static void setWindowSize ( _THIS  , SDL_Window *  window  )

static

Updates the size of the native window using the geometry of the SDL window.

Parameters

_THIS
window	SDL window to update

Definition at line 246 of file video.c.

References SDL_Window::driverdata, SDL_Window::h, SDL_Window::w, and window_impl_t::window.

Referenced by createDevice().

{
    window_impl_t   *impl = (window_impl_t *)window->driverdata;
    int             size[2];

    size[0] = window->w;
    size[1] = window->h;

    screen_set_window_property_iv(impl->window, SCREEN_PROPERTY_SIZE, size);
    screen_set_window_property_iv(impl->window, SCREEN_PROPERTY_SOURCE_SIZE,
                                  size);
}

static void showWindow ( _THIS  , SDL_Window *  window  )

static

Makes the native window associated with the given SDL window visible.

Parameters

_THIS
window	SDL window to update

Definition at line 265 of file video.c.

References SDL_Window::driverdata, and window_impl_t::window.

Referenced by createDevice().

{
    window_impl_t   *impl = (window_impl_t *)window->driverdata;
    const int       visible = 1;

    screen_set_window_property_iv(impl->window, SCREEN_PROPERTY_VISIBLE,
                                  &visible);
}

static int updateWindowFramebuffer ( _THIS  , SDL_Window *  window, const SDL_Rect *  rects, int  numrects  )

static

Informs the window manager that the window needs to be updated.

Parameters

_THIS
window	The window to update
rects	An array of reectangular areas to update
numrects	Rect array length

Returns

0 if successful, -1 on error

Definition at line 190 of file video.c.

References context, SDL_Window::driverdata, and window_impl_t::window.

Referenced by createDevice().

{
    window_impl_t   *impl = (window_impl_t *)window->driverdata;
    screen_buffer_t buffer;

    if (screen_get_window_property_pv(impl->window, SCREEN_PROPERTY_BUFFERS,
                                      (void **)&buffer) < 0) {
        return -1;
    }

    screen_post_window(impl->window, buffer, numrects, (int *)rects, 0);
    screen_flush_context(context, 0);
    return 0;
}

static int videoInit ( _THIS  )

static

Initializes the QNX video plugin. Creates the Screen context and event handles used for all window operations by the plugin.

Parameters

_THIS

Returns

0 if successful, -1 on error

Definition at line 36 of file video.c.

References _this, context, SDL_VideoDevice::num_displays, SDL_AddVideoDisplay(), and SDL_zero.

Referenced by createDevice().

{
    SDL_VideoDisplay display;

    if (screen_create_context(&context, 0) < 0) {
        return -1;
    }

    if (screen_create_event(&event) < 0) {
        return -1;
    }

    SDL_zero(display);

    if (SDL_AddVideoDisplay(&display) < 0) {
        return -1;
    }

    _this->num_displays = 1;
    return 0;
}

static void videoQuit ( _THIS  )

static

Definition at line 59 of file video.c.

Referenced by createDevice().

{
}

Variable Documentation

screen_context_t context

static

Definition at line 25 of file video.c.

Referenced by createWindow(), glCreateContext(), pumpEvents(), SDL_TrackAllocation(), ShouldUseTextureFramebuffer(), updateWindowFramebuffer(), and videoInit().

screen_event_t event

static

Definition at line 26 of file video.c.

VideoBootStrap QNX_bootstrap

Initial value:

 {
    "qnx", "QNX Screen",
    available, createDevice
}

Definition at line 361 of file video.c.