/**
* Allocates a surface and an OpenGL context for video output.
*/
static int Open (vlc_object_t *obj)
{
vout_display_t *vd = (vout_display_t *)obj;
vout_display_sys_t *sys = malloc (sizeof (*sys));
if (unlikely(sys == NULL))
return VLC_ENOMEM;
sys->gl = NULL;
sys->pool = NULL;
sys->window = MakeWindow (vd);
if (sys->window == NULL)
goto error;
sys->gl = vlc_gl_Create (sys->window, API, "$" MODULE_VARNAME);
if (sys->gl == NULL)
goto error;
if (vlc_gl_MakeCurrent (sys->gl))
goto error;
/* Initialize video display */
sys->vgl = vout_display_opengl_New (&vd->fmt, NULL, sys->gl);
if (!sys->vgl)
goto error;
vd->sys = sys;
vd->info.has_pictures_invalid = false;
vd->info.has_event_thread = false;
vd->pool = Pool;
vd->prepare = PictureRender;
vd->display = PictureDisplay;
vd->control = Control;
vd->manage = NULL;
return VLC_SUCCESS;
error:
if (sys->gl != NULL)
vlc_gl_Destroy (sys->gl);
if (sys->window != NULL)
vout_display_DeleteWindow (vd, sys->window);
free (sys);
return VLC_EGENERIC;
}
/**
* It creates an OpenGL vout display.
*/
static int Open(vlc_object_t *object)
{
vout_display_t *vd = (vout_display_t *)object;
vout_display_sys_t *sys;
/* Allocate structure */
vd->sys = sys = calloc(1, sizeof(*sys));
if (!sys)
return VLC_ENOMEM;
/* */
if (CommonInit(vd))
goto error;
EventThreadUpdateTitle(sys->event, VOUT_TITLE " (OpenGL output)");
/* */
sys->hGLDC = GetDC(sys->hvideownd);
/* Set the pixel format for the DC */
PIXELFORMATDESCRIPTOR pfd;
memset(&pfd, 0, sizeof(pfd));
pfd.nSize = sizeof(pfd);
pfd.nVersion = 1;
pfd.dwFlags = PFD_DRAW_TO_WINDOW | PFD_SUPPORT_OPENGL | PFD_DOUBLEBUFFER;
pfd.iPixelType = PFD_TYPE_RGBA;
pfd.cColorBits = 24;
pfd.cDepthBits = 16;
pfd.iLayerType = PFD_MAIN_PLANE;
SetPixelFormat(sys->hGLDC,
ChoosePixelFormat(sys->hGLDC, &pfd), &pfd);
/* Create and enable the render context */
sys->hGLRC = wglCreateContext(sys->hGLDC);
wglMakeCurrent(sys->hGLDC, sys->hGLRC);
const char *extensions = (const char*)glGetString(GL_EXTENSIONS);
#ifdef WGL_EXT_swap_control
if (HasExtension(extensions, "WGL_EXT_swap_control")) {
PFNWGLSWAPINTERVALEXTPROC SwapIntervalEXT = (PFNWGLSWAPINTERVALEXTPROC)wglGetProcAddress("wglSwapIntervalEXT");
if (SwapIntervalEXT)
SwapIntervalEXT(1);
}
#endif
/* */
sys->gl.lock = NULL;
sys->gl.unlock = NULL;
sys->gl.swap = Swap;
sys->gl.getProcAddress = OurGetProcAddress;
sys->gl.sys = vd;
video_format_t fmt = vd->fmt;
const vlc_fourcc_t *subpicture_chromas;
sys->vgl = vout_display_opengl_New(&fmt, &subpicture_chromas, &sys->gl);
if (!sys->vgl)
goto error;
vout_display_info_t info = vd->info;
info.has_double_click = true;
info.has_hide_mouse = false;
info.has_event_thread = true;
info.subpicture_chromas = subpicture_chromas;
/* Setup vout_display now that everything is fine */
vd->fmt = fmt;
vd->info = info;
vd->pool = Pool;
vd->prepare = Prepare;
vd->display = Display;
vd->control = Control;
vd->manage = Manage;
return VLC_SUCCESS;
error:
Close(object);
return VLC_EGENERIC;
}
