C++ (Cpp) _ggi_x_create_ximage Examples

Example #1

File: vline.c Project: Nekrofage/DoomRPi

int GGI_X_putvline_draw(ggi_visual *vis, int x, int y, int h, const void *data)
{
        XImage *ximg;
	ggi_x_priv *priv;
	priv = GGIX_PRIV(vis);

	GGI_X_LOCK_XLIB(vis);
#warning 1,2,4-bit support needed.
	ximg = _ggi_x_create_ximage( vis, (char*)data, 1, h);
	if (ximg == NULL) return GGI_ENOMEM;

        XPutImage(priv->disp, priv->drawable, priv->gc, ximg,
                  0, 0, x, GGI_X_WRITE_Y, 1, (unsigned)h);
#ifndef HAVE_XINITIMAGE
	XFree(ximg);
#else
	free(ximg);
#endif

	GGI_X_MAYBE_SYNC(vis);
	GGI_X_UNLOCK_XLIB(vis);
        return 0;
}

Example #2

File: buffer.c Project: antrik/libggi

int _ggi_x_createfb(struct ggi_visual *vis)
{
	char target[GGI_MAX_APILEN];
	ggi_mode tm;
	ggi_x_priv *priv;
	int err, i;

	err = GGI_OK;
	priv = GGIX_PRIV(vis);

	DPRINT_MODE("_ggi_x_createfb(%p) called\n", vis);
	DPRINT("viidx = %i\n", priv->viidx);

	_ggi_x_freefb(vis);

	DPRINT_MODE("Creating vanilla XImage client-side buffer\n");

	priv->fb = calloc(1, GT_ByPPP(LIBGGI_VIRTX(vis),LIBGGI_GT(vis))
			* LIBGGI_VIRTY(vis) * LIBGGI_MODE(vis)->frames);
	if (priv->fb == NULL) {
		DPRINT("_ggi_x_createfb: XImage buffer allocation failed.\n");
		err = GGI_ENOMEM;
		goto err0;
	}

	/* We assume LIBGGI_MODE(vis) structure has already been filled out */
	memcpy(&tm, LIBGGI_MODE(vis), sizeof(ggi_mode));


	/* Make sure we do not fail due to physical size constraints,
	 * which are meaningless on a memory visual.
	 */
	tm.size.x = tm.size.y = GGI_AUTO;

	i = 0;
	memset(target, '\0', sizeof(target));
	i += snprintf(target, sizeof(target),
			"display-memory:-noblank:-pixfmt=");

	_ggi_build_pixfmtstr(vis, target + i, sizeof(target) - i, 1);
	i = strlen(target);

	snprintf(target + i, sizeof(target) - i, ":-physz=%i,%i:pointer", 
		LIBGGI_MODE(vis)->size.x, LIBGGI_MODE(vis)->size.y);

	err = _ggi_openslave(vis, target, &tm);
	if (err)
		goto err1;

	priv->ximage = _ggi_x_create_ximage( vis, (char*)priv->fb,
					     LIBGGI_VIRTX(vis), 
					     LIBGGI_VIRTY(vis) );
	if (priv->ximage == NULL) {
		DPRINT("_ggi_x_createfb: _ggi_x_create_ximage() failed\n");
		err = GGI_ENOMEM;
		goto err1;
	}

	err = _ggi_create_dbs(vis);
	if (err)
		goto err1;

	DPRINT_MODE("X: XImage %p and slave visual %p share buffer at %p\n",
		       priv->ximage, priv->slave, priv->fb);

	return GGI_OK;

err1:
	_ggi_x_freefb(vis);
err0:
	return err;
}