Framebuffer.cpp@ 50406

Last change on this file since 50406 was 50406, checked in by vboxsync, 11 years ago
Some RTEnvGet cleanup, adding todos for the rest.
Property svn:eol-style set to `native` Property svn:keywords set to `Author Date Id Revision`
File size: 47.0 KB

Line
1	/** @file
2	*
3	* VBox frontends: VBoxSDL (simple frontend based on SDL):
4	* Implementation of VBoxSDLFB (SDL framebuffer) class
5	*/
6
7	/*
8	* Copyright (C) 2006-2012 Oracle Corporation
9	*
10	* This file is part of VirtualBox Open Source Edition (OSE), as
11	* available from http://www.virtualbox.org. This file is free software;
12	* you can redistribute it and/or modify it under the terms of the GNU
13	* General Public License (GPL) as published by the Free Software
14	* Foundation, in version 2 as it comes in the "COPYING" file of the
15	* VirtualBox OSE distribution. VirtualBox OSE is distributed in the
16	* hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
17	*/
18
19	#include <VBox/com/com.h>
20	#include <VBox/com/string.h>
21	#include <VBox/com/Guid.h>
22	#include <VBox/com/ErrorInfo.h>
23	#include <VBox/com/VirtualBox.h>
24
25	#include <iprt/stream.h>
26	#include <iprt/env.h>
27
28	#ifdef RT_OS_OS2
29	# undef RT_MAX
30	// from <iprt/cdefs.h>
31	# define RT_MAX(Value1, Value2) ((Value1) >= (Value2) ? (Value1) : (Value2))
32	#endif
33
34	using namespace com;
35
36	#define LOG_GROUP LOG_GROUP_GUI
37	#include <VBox/err.h>
38	#include <VBox/log.h>
39
40	#include "VBoxSDL.h"
41	#include "Framebuffer.h"
42	#include "Ico64x01.h"
43
44	#if defined(RT_OS_WINDOWS) \|\| defined(RT_OS_LINUX)
45	#include <SDL_syswm.h> /* for SDL_GetWMInfo() */
46	#endif
47
48	#if defined(VBOX_WITH_XPCOM)
49	NS_IMPL_THREADSAFE_ISUPPORTS1_CI(VBoxSDLFB, IFramebuffer)
50	NS_DECL_CLASSINFO(VBoxSDLFB)
51	NS_IMPL_THREADSAFE_ISUPPORTS2_CI(VBoxSDLFBOverlay, IFramebufferOverlay, IFramebuffer)
52	NS_DECL_CLASSINFO(VBoxSDLFBOverlay)
53	#endif
54
55	#ifdef VBOX_SECURELABEL
56	/* function pointers */
57	extern "C"
58	{
59	DECLSPEC int (SDLCALL *pTTF_Init)(void);
60	DECLSPEC TTF_Font* (SDLCALL pTTF_OpenFont)(const char file, int ptsize);
61	DECLSPEC SDL_Surface* (SDLCALL pTTF_RenderUTF8_Solid)(TTF_Font font, const char *text, SDL_Color fg);
62	DECLSPEC SDL_Surface* (SDLCALL pTTF_RenderUTF8_Blended)(TTF_Font font, const char *text, SDL_Color fg);
63	DECLSPEC void (SDLCALL pTTF_CloseFont)(TTF_Font font);
64	DECLSPEC void (SDLCALL *pTTF_Quit)(void);
65	}
66	#endif /* VBOX_SECURELABEL */
67
68	static bool gfSdlInitialized = false; /*< if SDL was initialized /
69	static SDL_Surface gWMIcon = NULL; /< the application icon /
70	static RTNATIVETHREAD gSdlNativeThread = NIL_RTNATIVETHREAD; /*< the SDL thread /
71
72	//
73	// Constructor / destructor
74	//
75
76	/**
77	* SDL framebuffer constructor. It is called from the main
78	* (i.e. SDL) thread. Therefore it is safe to use SDL calls
79	* here.
80	* @param fFullscreen flag whether we start in fullscreen mode
81	* @param fResizable flag whether the SDL window should be resizable
82	* @param fShowSDLConfig flag whether we print out SDL settings
83	* @param fKeepHostRes flag whether we switch the host screen resolution
84	* when switching to fullscreen or not
85	* @param iFixedWidth fixed SDL width (-1 means not set)
86	* @param iFixedHeight fixed SDL height (-1 means not set)
87	*/
88	VBoxSDLFB::VBoxSDLFB(uint32_t uScreenId,
89	bool fFullscreen, bool fResizable, bool fShowSDLConfig,
90	bool fKeepHostRes, uint32_t u32FixedWidth,
91	uint32_t u32FixedHeight, uint32_t u32FixedBPP)
92	{
93	int rc;
94	LogFlow(("VBoxSDLFB::VBoxSDLFB\n"));
95
96	#if defined (RT_OS_WINDOWS)
97	refcnt = 0;
98	#endif
99
100	mScreenId = uScreenId;
101	mScreen = NULL;
102	#ifdef VBOX_WITH_SDL13
103	mWindow = 0;
104	mTexture = 0;
105	#endif
106	mSurfVRAM = NULL;
107	mfInitialized = false;
108	mfFullscreen = fFullscreen;
109	mfKeepHostRes = fKeepHostRes;
110	mTopOffset = 0;
111	mfResizable = fResizable;
112	mfShowSDLConfig = fShowSDLConfig;
113	mFixedSDLWidth = u32FixedWidth;
114	mFixedSDLHeight = u32FixedHeight;
115	mFixedSDLBPP = u32FixedBPP;
116	mCenterXOffset = 0;
117	mCenterYOffset = 0;
118	/* Start with standard screen dimensions. */
119	mGuestXRes = 640;
120	mGuestYRes = 480;
121	mPixelFormat = FramebufferPixelFormat_Opaque;
122	mUsesGuestVRAM = FALSE;
123	mPtrVRAM = NULL;
124	mBitsPerPixel = 0;
125	mBytesPerLine = 0;
126	mfSameSizeRequested = false;
127	#ifdef VBOX_SECURELABEL
128	mLabelFont = NULL;
129	mLabelHeight = 0;
130	mLabelOffs = 0;
131	#endif
132
133	rc = RTCritSectInit(&mUpdateLock);
134	AssertMsg(rc == VINF_SUCCESS, ("Error from RTCritSectInit!\n"));
135
136	resizeGuest();
137	Assert(mScreen);
138	mfInitialized = true;
139	}
140
141	VBoxSDLFB::~VBoxSDLFB()
142	{
143	LogFlow(("VBoxSDLFB::~VBoxSDLFB\n"));
144	if (mSurfVRAM)
145	{
146	SDL_FreeSurface(mSurfVRAM);
147	mSurfVRAM = NULL;
148	}
149	mScreen = NULL;
150
151	#ifdef VBOX_SECURELABEL
152	if (mLabelFont)
153	pTTF_CloseFont(mLabelFont);
154	if (pTTF_Quit)
155	pTTF_Quit();
156	#endif
157
158	RTCritSectDelete(&mUpdateLock);
159	}
160
161	bool VBoxSDLFB::init(bool fShowSDLConfig)
162	{
163	LogFlow(("VBoxSDLFB::init\n"));
164
165	/* memorize the thread that inited us, that's the SDL thread */
166	gSdlNativeThread = RTThreadNativeSelf();
167
168	#ifdef RT_OS_WINDOWS
169	/* default to DirectX if nothing else set */
170	if (!RTEnvExist("SDL_VIDEODRIVER"))
171	{
172	_putenv("SDL_VIDEODRIVER=directx");
173	// _putenv("SDL_VIDEODRIVER=windib");
174	}
175	#endif
176	#ifdef VBOXSDL_WITH_X11
177	/* On some X servers the mouse is stuck inside the bottom right corner.
178	* See http://wiki.clug.org.za/wiki/QEMU_mouse_not_working */
179	RTEnvSet("SDL_VIDEO_X11_DGAMOUSE", "0");
180	#endif
181	int rc = SDL_InitSubSystem(SDL_INIT_VIDEO \| SDL_INIT_TIMER \| SDL_INIT_NOPARACHUTE);
182	if (rc != 0)
183	{
184	RTPrintf("SDL Error: '%s'\n", SDL_GetError());
185	return false;
186	}
187	gfSdlInitialized = true;
188
189	const SDL_VideoInfo *videoInfo = SDL_GetVideoInfo();
190	Assert(videoInfo);
191	if (videoInfo)
192	{
193	/* output what SDL is capable of */
194	if (fShowSDLConfig)
195	RTPrintf("SDL capabilities:\n"
196	" Hardware surface support: %s\n"
197	" Window manager available: %s\n"
198	" Screen to screen blits accelerated: %s\n"
199	" Screen to screen colorkey blits accelerated: %s\n"
200	" Screen to screen alpha blits accelerated: %s\n"
201	" Memory to screen blits accelerated: %s\n"
202	" Memory to screen colorkey blits accelerated: %s\n"
203	" Memory to screen alpha blits accelerated: %s\n"
204	" Color fills accelerated: %s\n"
205	" Video memory in kilobytes: %d\n"
206	" Optimal bpp mode: %d\n"
207	"SDL video driver: %s\n",
208	videoInfo->hw_available ? "yes" : "no",
209	videoInfo->wm_available ? "yes" : "no",
210	videoInfo->blit_hw ? "yes" : "no",
211	videoInfo->blit_hw_CC ? "yes" : "no",
212	videoInfo->blit_hw_A ? "yes" : "no",
213	videoInfo->blit_sw ? "yes" : "no",
214	videoInfo->blit_sw_CC ? "yes" : "no",
215	videoInfo->blit_sw_A ? "yes" : "no",
216	videoInfo->blit_fill ? "yes" : "no",
217	videoInfo->video_mem,
218	videoInfo->vfmt->BitsPerPixel,
219	RTEnvGet("SDL_VIDEODRIVER"));
220	}
221
222	if (12320 == g_cbIco64x01)
223	{
224	gWMIcon = SDL_AllocSurface(SDL_SWSURFACE, 64, 64, 24, 0xff, 0xff00, 0xff0000, 0);
225	/** @todo make it as simple as possible. No PNM interpreter here... */
226	if (gWMIcon)
227	{
228	memcpy(gWMIcon->pixels, g_abIco64x01+32, g_cbIco64x01-32);
229	SDL_WM_SetIcon(gWMIcon, NULL);
230	}
231	}
232
233	return true;
234	}
235
236	/**
237	* Terminate SDL
238	*
239	* @remarks must be called from the SDL thread!
240	*/
241	void VBoxSDLFB::uninit()
242	{
243	if (gfSdlInitialized)
244	{
245	AssertMsg(gSdlNativeThread == RTThreadNativeSelf(), ("Wrong thread! SDL is not threadsafe!\n"));
246	SDL_QuitSubSystem(SDL_INIT_VIDEO);
247	if (gWMIcon)
248	{
249	SDL_FreeSurface(gWMIcon);
250	gWMIcon = NULL;
251	}
252	}
253	}
254
255	/**
256	* Returns the current framebuffer width in pixels.
257	*
258	* @returns COM status code
259	* @param width Address of result buffer.
260	*/
261	STDMETHODIMP VBoxSDLFB::COMGETTER(Width)(ULONG *width)
262	{
263	LogFlow(("VBoxSDLFB::GetWidth\n"));
264	if (!width)
265	return E_INVALIDARG;
266	*width = mGuestXRes;
267	return S_OK;
268	}
269
270	/**
271	* Returns the current framebuffer height in pixels.
272	*
273	* @returns COM status code
274	* @param height Address of result buffer.
275	*/
276	STDMETHODIMP VBoxSDLFB::COMGETTER(Height)(ULONG *height)
277	{
278	LogFlow(("VBoxSDLFB::GetHeight\n"));
279	if (!height)
280	return E_INVALIDARG;
281	*height = mGuestYRes;
282	return S_OK;
283	}
284
285	/**
286	* Lock the framebuffer (make its address immutable).
287	*
288	* @returns COM status code
289	*/
290	STDMETHODIMP VBoxSDLFB::Lock()
291	{
292	LogFlow(("VBoxSDLFB::Lock\n"));
293	RTCritSectEnter(&mUpdateLock);
294	return S_OK;
295	}
296
297	/**
298	* Unlock the framebuffer.
299	*
300	* @returns COM status code
301	*/
302	STDMETHODIMP VBoxSDLFB::Unlock()
303	{
304	LogFlow(("VBoxSDLFB::Unlock\n"));
305	RTCritSectLeave(&mUpdateLock);
306	return S_OK;
307	}
308
309	/**
310	* Return the framebuffer start address.
311	*
312	* @returns COM status code.
313	* @param address Pointer to result variable.
314	*/
315	STDMETHODIMP VBoxSDLFB::COMGETTER(Address)(BYTE **address)
316	{
317	LogFlow(("VBoxSDLFB::GetAddress\n"));
318	if (!address)
319	return E_INVALIDARG;
320
321	if (!mSurfVRAM)
322	{
323	/* That's actually rather bad. */
324	AssertMsgFailed(("mSurfVRAM is NULL!\n"));
325	return E_FAIL;
326	}
327
328	address = (BYTE ) mSurfVRAM->pixels;
329	LogFlow(("VBoxSDL::GetAddress returning %p\n", *address));
330	return S_OK;
331	}
332
333	/**
334	* Return the current framebuffer color depth.
335	*
336	* @returns COM status code
337	* @param bitsPerPixel Address of result variable
338	*/
339	STDMETHODIMP VBoxSDLFB::COMGETTER(BitsPerPixel)(ULONG *bitsPerPixel)
340	{
341	LogFlow(("VBoxSDLFB::GetBitsPerPixel\n"));
342	if (!bitsPerPixel)
343	return E_INVALIDARG;
344	/* get the information directly from the surface in use */
345	Assert(mSurfVRAM);
346	*bitsPerPixel = (ULONG)(mSurfVRAM ? mSurfVRAM->format->BitsPerPixel : 0);
347	return S_OK;
348	}
349
350	/**
351	* Return the current framebuffer line size in bytes.
352	*
353	* @returns COM status code.
354	* @param lineSize Address of result variable.
355	*/
356	STDMETHODIMP VBoxSDLFB::COMGETTER(BytesPerLine)(ULONG *bytesPerLine)
357	{
358	LogFlow(("VBoxSDLFB::GetBytesPerLine\n"));
359	if (!bytesPerLine)
360	return E_INVALIDARG;
361	/* get the information directly from the surface */
362	Assert(mSurfVRAM);
363	*bytesPerLine = (ULONG)(mSurfVRAM ? mSurfVRAM->pitch : 0);
364	return S_OK;
365	}
366
367	STDMETHODIMP VBoxSDLFB::COMGETTER(PixelFormat) (ULONG *pixelFormat)
368	{
369	if (!pixelFormat)
370	return E_POINTER;
371	*pixelFormat = mPixelFormat;
372	return S_OK;
373	}
374
375	STDMETHODIMP VBoxSDLFB::COMGETTER(UsesGuestVRAM) (BOOL *usesGuestVRAM)
376	{
377	if (!usesGuestVRAM)
378	return E_POINTER;
379	*usesGuestVRAM = mUsesGuestVRAM;
380	return S_OK;
381	}
382
383	/**
384	* Returns by how many pixels the guest should shrink its
385	* video mode height values.
386	*
387	* @returns COM status code.
388	* @param heightReduction Address of result variable.
389	*/
390	STDMETHODIMP VBoxSDLFB::COMGETTER(HeightReduction)(ULONG *heightReduction)
391	{
392	if (!heightReduction)
393	return E_POINTER;
394	#ifdef VBOX_SECURELABEL
395	*heightReduction = mLabelHeight;
396	#else
397	*heightReduction = 0;
398	#endif
399	return S_OK;
400	}
401
402	/**
403	* Returns a pointer to an alpha-blended overlay used for displaying status
404	* icons above the framebuffer.
405	*
406	* @returns COM status code.
407	* @param aOverlay The overlay framebuffer.
408	*/
409	STDMETHODIMP VBoxSDLFB::COMGETTER(Overlay)(IFramebufferOverlay **aOverlay)
410	{
411	if (!aOverlay)
412	return E_POINTER;
413	/* Not yet implemented */
414	*aOverlay = 0;
415	return S_OK;
416	}
417
418	/**
419	* Returns handle of window where framebuffer context is being drawn
420	*
421	* @returns COM status code.
422	* @param winId Handle of associated window.
423	*/
424	STDMETHODIMP VBoxSDLFB::COMGETTER(WinId)(int64_t *winId)
425	{
426	if (!winId)
427	return E_POINTER;
428	*winId = mWinId;
429	return S_OK;
430	}
431
432	/**
433	* Notify framebuffer of an update.
434	*
435	* @returns COM status code
436	* @param x Update region upper left corner x value.
437	* @param y Update region upper left corner y value.
438	* @param w Update region width in pixels.
439	* @param h Update region height in pixels.
440	* @param finished Address of output flag whether the update
441	* could be fully processed in this call (which
442	* has to return immediately) or VBox should wait
443	* for a call to the update complete API before
444	* continuing with display updates.
445	*/
446	STDMETHODIMP VBoxSDLFB::NotifyUpdate(ULONG x, ULONG y,
447	ULONG w, ULONG h)
448	{
449	/*
450	* The input values are in guest screen coordinates.
451	*/
452	LogFlow(("VBoxSDLFB::NotifyUpdate: x = %d, y = %d, w = %d, h = %d\n",
453	x, y, w, h));
454
455	#ifdef VBOXSDL_WITH_X11
456	/*
457	* SDL does not allow us to make this call from any other thread than
458	* the main SDL thread (which initialized the video mode). So we have
459	* to send an event to the main SDL thread and process it there. For
460	* sake of simplicity, we encode all information in the event parameters.
461	*/
462	SDL_Event event;
463	event.type = SDL_USEREVENT;
464	event.user.code = mScreenId;
465	event.user.type = SDL_USER_EVENT_UPDATERECT;
466	// 16 bit is enough for coordinates
467	event.user.data1 = (void*)(uintptr_t)(x << 16 \| y);
468	event.user.data2 = (void*)(uintptr_t)(w << 16 \| h);
469	PushNotifyUpdateEvent(&event);
470	#else /* !VBOXSDL_WITH_X11 */
471	update(x, y, w, h, true /* fGuestRelative */);
472	#endif /* !VBOXSDL_WITH_X11 */
473
474	return S_OK;
475	}
476
477	/**
478	* Request a display resize from the framebuffer.
479	*
480	* @returns COM status code.
481	* @param pixelFormat The requested pixel format.
482	* @param vram Pointer to the guest VRAM buffer (can be NULL).
483	* @param bitsPerPixel Color depth in bits.
484	* @param bytesPerLine Size of a scanline in bytes.
485	* @param w New display width in pixels.
486	* @param h New display height in pixels.
487	* @param finished Address of output flag whether the update
488	* could be fully processed in this call (which
489	* has to return immediately) or VBox should wait
490	* for all call to the resize complete API before
491	* continuing with display updates.
492	*/
493	STDMETHODIMP VBoxSDLFB::RequestResize(ULONG aScreenId, ULONG pixelFormat, BYTE *vram,
494	ULONG bitsPerPixel, ULONG bytesPerLine,
495	ULONG w, ULONG h, BOOL *finished)
496	{
497	LogFlowFunc (("w=%d, h=%d, pixelFormat=0x%08lX, vram=%p, "
498	"bpp=%d, bpl=%d\n",
499	w, h, pixelFormat, vram, bitsPerPixel, bytesPerLine));
500
501	/*
502	* SDL does not allow us to make this call from any other thread than
503	* the main thread (the one which initialized the video mode). So we
504	* have to send an event to the main SDL thread and tell VBox to wait.
505	*/
506	if (!finished)
507	{
508	AssertMsgFailed(("RequestResize requires the finished flag!\n"));
509	return E_FAIL;
510	}
511
512	/*
513	* Optimize the case when the guest has changed only the VRAM ptr
514	* and the framebuffer uses the guest VRAM as the source bitmap.
515	*/
516	if ( mGuestXRes == w
517	&& mGuestYRes == h
518	&& mPixelFormat == pixelFormat
519	&& mBitsPerPixel == bitsPerPixel
520	&& mBytesPerLine == bytesPerLine
521	&& mUsesGuestVRAM
522	)
523	{
524	mfSameSizeRequested = true;
525	}
526	else
527	{
528	mfSameSizeRequested = false;
529	}
530
531	mGuestXRes = w;
532	mGuestYRes = h;
533	mPixelFormat = pixelFormat;
534	mPtrVRAM = vram;
535	mBitsPerPixel = bitsPerPixel;
536	mBytesPerLine = bytesPerLine;
537	mUsesGuestVRAM = FALSE; /* yet */
538
539	SDL_Event event;
540	event.type = SDL_USEREVENT;
541	event.user.type = SDL_USER_EVENT_RESIZE;
542	event.user.code = mScreenId;
543
544	/* Try multiple times if necessary */
545	PushSDLEventForSure(&event);
546
547	/* we want this request to be processed quickly, so yield the CPU */
548	RTThreadYield();
549
550	*finished = false;
551
552	return S_OK;
553	}
554
555	/**
556	* Returns whether we like the given video mode.
557	*
558	* @returns COM status code
559	* @param width video mode width in pixels
560	* @param height video mode height in pixels
561	* @param bpp video mode bit depth in bits per pixel
562	* @param supported pointer to result variable
563	*/
564	STDMETHODIMP VBoxSDLFB::VideoModeSupported(ULONG width, ULONG height, ULONG bpp, BOOL *supported)
565	{
566	if (!supported)
567	return E_POINTER;
568
569	/* are constraints set? */
570	if ( ( (mMaxScreenWidth != ~(uint32_t)0)
571	&& (width > mMaxScreenWidth))
572	\|\| ( (mMaxScreenHeight != ~(uint32_t)0)
573	&& (height > mMaxScreenHeight)))
574	{
575	/* nope, we don't want that (but still don't freak out if it is set) */
576	#ifdef DEBUG
577	printf("VBoxSDL::VideoModeSupported: we refused mode %dx%dx%d\n", width, height, bpp);
578	#endif
579	*supported = false;
580	}
581	else
582	{
583	/* anything will do */
584	*supported = true;
585	}
586	return S_OK;
587	}
588
589	STDMETHODIMP VBoxSDLFB::GetVisibleRegion(BYTE *aRectangles, ULONG aCount,
590	ULONG *aCountCopied)
591	{
592	PRTRECT rects = (PRTRECT)aRectangles;
593
594	if (!rects)
595	return E_POINTER;
596
597	/// @todo
598
599	NOREF(aCount);
600	NOREF(aCountCopied);
601
602	return S_OK;
603	}
604
605	STDMETHODIMP VBoxSDLFB::SetVisibleRegion(BYTE *aRectangles, ULONG aCount)
606	{
607	PRTRECT rects = (PRTRECT)aRectangles;
608
609	if (!rects)
610	return E_POINTER;
611
612	/// @todo
613
614	NOREF(aCount);
615
616	return S_OK;
617	}
618
619	STDMETHODIMP VBoxSDLFB::ProcessVHWACommand(BYTE *pCommand)
620	{
621	return E_NOTIMPL;
622	}
623
624	STDMETHODIMP VBoxSDLFB::Notify3DEvent(ULONG uType, BYTE *pReserved)
625	{
626	return E_NOTIMPL;
627	}
628
629	//
630	// Internal public methods
631	//
632
633	/**
634	* Method that does the actual resize of the guest framebuffer and
635	* then changes the SDL framebuffer setup.
636	*/
637	void VBoxSDLFB::resizeGuest()
638	{
639	LogFlowFunc (("mGuestXRes: %d, mGuestYRes: %d\n", mGuestXRes, mGuestYRes));
640	AssertMsg(gSdlNativeThread == RTThreadNativeSelf(),
641	("Wrong thread! SDL is not threadsafe!\n"));
642
643	uint32_t Rmask, Gmask, Bmask, Amask = 0;
644
645	mUsesGuestVRAM = FALSE;
646
647	/* pixel characteristics. if we don't support the format directly, we will
648	* fallback to the indirect 32bpp buffer (mUsesGuestVRAM will remain
649	* FALSE) */
650	if (mPixelFormat == FramebufferPixelFormat_FOURCC_RGB)
651	{
652	switch (mBitsPerPixel)
653	{
654	case 16:
655	case 24:
656	case 32:
657	mUsesGuestVRAM = TRUE;
658	break;
659	default:
660	/* the fallback buffer is always 32bpp */
661	mBitsPerPixel = 32;
662	mBytesPerLine = mGuestXRes * 4;
663	break;
664	}
665	}
666	else
667	{
668	/* the fallback buffer is always RGB, 32bpp */
669	mPixelFormat = FramebufferPixelFormat_FOURCC_RGB;
670	mBitsPerPixel = 32;
671	mBytesPerLine = mGuestXRes * 4;
672	}
673
674	switch (mBitsPerPixel)
675	{
676	case 16: Rmask = 0x0000F800; Gmask = 0x000007E0; Bmask = 0x0000001F; break;
677	default: Rmask = 0x00FF0000; Gmask = 0x0000FF00; Bmask = 0x000000FF; break;
678	}
679
680	/* first free the current surface */
681	if (mSurfVRAM)
682	{
683	SDL_FreeSurface(mSurfVRAM);
684	mSurfVRAM = NULL;
685	}
686
687	/* is the guest in a linear framebuffer mode we support? */
688	if (mUsesGuestVRAM)
689	{
690	/* Create a source surface from guest VRAM. */
691	mSurfVRAM = SDL_CreateRGBSurfaceFrom(mPtrVRAM, mGuestXRes, mGuestYRes, mBitsPerPixel,
692	mBytesPerLine, Rmask, Gmask, Bmask, Amask);
693	LogRel(("mSurfVRAM from guest %d x %d\n", mGuestXRes, mGuestYRes));
694	}
695	else
696	{
697	/* Create a software surface for which SDL allocates the RAM */
698	mSurfVRAM = SDL_CreateRGBSurface(SDL_SWSURFACE, mGuestXRes, mGuestYRes, mBitsPerPixel,
699	Rmask, Gmask, Bmask, Amask);
700	LogRel(("mSurfVRAM from SDL %d x %d\n", mGuestXRes, mGuestYRes));
701	}
702	LogFlow(("VBoxSDL:: created VRAM surface %p\n", mSurfVRAM));
703
704	if (mfSameSizeRequested && mUsesGuestVRAM)
705	{
706	/*
707	* Same size has been requested and the framebuffer still uses the guest VRAM.
708	* Reset the condition and return.
709	*/
710	mfSameSizeRequested = false;
711	LogFlow(("VBoxSDL:: the same resolution requested, skipping the resize.\n"));
712	return;
713	}
714
715	/* now adjust the SDL resolution */
716	resizeSDL();
717	}
718
719	/**
720	* Sets SDL video mode. This is independent from guest video
721	* mode changes.
722	*
723	* @remarks Must be called from the SDL thread!
724	*/
725	void VBoxSDLFB::resizeSDL(void)
726	{
727	LogFlow(("VBoxSDL:resizeSDL\n"));
728
729	/*
730	* We request a hardware surface from SDL so that we can perform
731	* accelerated system memory to VRAM blits. The way video handling
732	* works it that on the one hand we have the screen surface from SDL
733	* and on the other hand we have a software surface that we create
734	* using guest VRAM memory for linear modes and using SDL allocated
735	* system memory for text and non linear graphics modes. We never
736	* directly write to the screen surface but always use SDL blitting
737	* functions to blit from our system memory surface to the VRAM.
738	* Therefore, SDL can take advantage of hardware acceleration.
739	*/
740	int sdlFlags = SDL_HWSURFACE \| SDL_ASYNCBLIT \| SDL_HWACCEL;
741	#ifndef RT_OS_OS2 /* doesn't seem to work for some reason... */
742	if (mfResizable)
743	sdlFlags \|= SDL_RESIZABLE;
744	#endif
745	if (mfFullscreen)
746	sdlFlags \|= SDL_FULLSCREEN;
747
748	/*
749	* Now we have to check whether there are video mode restrictions
750	*/
751	SDL_Rect **modes;
752	/* Get available fullscreen/hardware modes */
753	modes = SDL_ListModes(NULL, sdlFlags);
754	Assert(modes != NULL);
755	/* -1 means that any mode is possible (usually non fullscreen) */
756	if (modes != (SDL_Rect **)-1)
757	{
758	/*
759	* according to the SDL documentation, the API guarantees that
760	* the modes are sorted from larger to smaller, so we just
761	* take the first entry as the maximum.
762	*/
763	mMaxScreenWidth = modes[0]->w;
764	mMaxScreenHeight = modes[0]->h;
765	}
766	else
767	{
768	/* no restriction */
769	mMaxScreenWidth = ~(uint32_t)0;
770	mMaxScreenHeight = ~(uint32_t)0;
771	}
772
773	uint32_t newWidth;
774	uint32_t newHeight;
775
776	/* reset the centering offsets */
777	mCenterXOffset = 0;
778	mCenterYOffset = 0;
779
780	/* we either have a fixed SDL resolution or we take the guest's */
781	if (mFixedSDLWidth != ~(uint32_t)0)
782	{
783	newWidth = mFixedSDLWidth;
784	newHeight = mFixedSDLHeight;
785	}
786	else
787	{
788	newWidth = RT_MIN(mGuestXRes, mMaxScreenWidth);
789	#ifdef VBOX_SECURELABEL
790	newHeight = RT_MIN(mGuestYRes + mLabelHeight, mMaxScreenHeight);
791	#else
792	newHeight = RT_MIN(mGuestYRes, mMaxScreenHeight);
793	#endif
794	}
795
796	/* we don't have any extra space by default */
797	mTopOffset = 0;
798
799	#if defined(VBOX_WITH_SDL13)
800	int sdlWindowFlags = SDL_WINDOW_SHOWN;
801	if (mfResizable)
802	sdlWindowFlags \|= SDL_WINDOW_RESIZABLE;
803	if (!mWindow)
804	{
805	SDL_DisplayMode desktop_mode;
806	int x = 40 + mScreenId * 20;
807	int y = 40 + mScreenId * 15;
808
809	SDL_GetDesktopDisplayMode(&desktop_mode);
810	/* create new window */
811
812	char szTitle[64];
813	RTStrPrintf(szTitle, sizeof(szTitle), "SDL window %d", mScreenId);
814	mWindow = SDL_CreateWindow(szTitle, x, y,
815	newWidth, newHeight, sdlWindowFlags);
816	if (SDL_CreateRenderer(mWindow, -1,
817	SDL_RENDERER_SINGLEBUFFER \| SDL_RENDERER_PRESENTDISCARD) < 0)
818	AssertReleaseFailed();
819
820	SDL_GetRendererInfo(&mRenderInfo);
821
822	mTexture = SDL_CreateTexture(desktop_mode.format,
823	SDL_TEXTUREACCESS_STREAMING, newWidth, newHeight);
824	if (!mTexture)
825	AssertReleaseFailed();
826	}
827	else
828	{
829	int w, h;
830	uint32_t format;
831	int access;
832
833	/* resize current window */
834	SDL_GetWindowSize(mWindow, &w, &h);
835
836	if (w != (int)newWidth \|\| h != (int)newHeight)
837	SDL_SetWindowSize(mWindow, newWidth, newHeight);
838
839	SDL_QueryTexture(mTexture, &format, &access, &w, &h);
840	SDL_SelectRenderer(mWindow);
841	SDL_DestroyTexture(mTexture);
842	mTexture = SDL_CreateTexture(format, access, newWidth, newHeight);
843	if (!mTexture)
844	AssertReleaseFailed();
845	}
846
847	void *pixels;
848	int pitch;
849	int w, h, bpp;
850	uint32_t Rmask, Gmask, Bmask, Amask;
851	uint32_t format;
852
853	if (SDL_QueryTexture(mTexture, &format, NULL, &w, &h) < 0)
854	AssertReleaseFailed();
855
856	if (!SDL_PixelFormatEnumToMasks(format, &bpp, &Rmask, &Gmask, &Bmask, &Amask))
857	AssertReleaseFailed();
858
859	if (SDL_QueryTexturePixels(mTexture, &pixels, &pitch) == 0)
860	{
861	mScreen = SDL_CreateRGBSurfaceFrom(pixels, w, h, bpp, pitch,
862	Rmask, Gmask, Bmask, Amask);
863	}
864	else
865	{
866	mScreen = SDL_CreateRGBSurface(0, w, h, bpp, Rmask, Gmask, Bmask, Amask);
867	AssertReleaseFailed();
868	}
869
870	SDL_SetClipRect(mScreen, NULL);
871
872	#else
873	/*
874	* Now set the screen resolution and get the surface pointer
875	* @todo BPP is not supported!
876	*/
877	mScreen = SDL_SetVideoMode(newWidth, newHeight, 0, sdlFlags);
878
879	/*
880	* Set the Window ID. Currently used for OpenGL accelerated guests.
881	*/
882	# if defined (RT_OS_WINDOWS)
883	SDL_SysWMinfo info;
884	SDL_VERSION(&info.version);
885	if (SDL_GetWMInfo(&info))
886	mWinId = (LONG64) info.window;
887	# elif defined (RT_OS_LINUX)
888	SDL_SysWMinfo info;
889	SDL_VERSION(&info.version);
890	if (SDL_GetWMInfo(&info))
891	mWinId = (LONG64) info.info.x11.wmwindow;
892	# else
893	/* XXX ignore this for other architectures */
894	# endif
895	#endif
896	#ifdef VBOX_SECURELABEL
897	/*
898	* For non fixed SDL resolution, the above call tried to add the label height
899	* to the guest height. If it worked, we have an offset. If it didn't the below
900	* code will try again with the original guest resolution.
901	*/
902	if (mFixedSDLWidth == ~(uint32_t)0)
903	{
904	/* if it didn't work, then we have to go for the original resolution and paint over the guest */
905	if (!mScreen)
906	{
907	mScreen = SDL_SetVideoMode(newWidth, newHeight - mLabelHeight, 0, sdlFlags);
908	}
909	else
910	{
911	/* we now have some extra space */
912	mTopOffset = mLabelHeight;
913	}
914	}
915	else
916	{
917	/* in case the guest resolution is small enough, we do have a top offset */
918	if (mFixedSDLHeight - mGuestYRes >= mLabelHeight)
919	mTopOffset = mLabelHeight;
920
921	/* we also might have to center the guest picture */
922	if (mFixedSDLWidth > mGuestXRes)
923	mCenterXOffset = (mFixedSDLWidth - mGuestXRes) / 2;
924	if (mFixedSDLHeight > mGuestYRes + mLabelHeight)
925	mCenterYOffset = (mFixedSDLHeight - (mGuestYRes + mLabelHeight)) / 2;
926	}
927	#endif
928	AssertMsg(mScreen, ("Error: SDL_SetVideoMode failed!\n"));
929	if (mScreen)
930	{
931	#ifdef VBOX_WIN32_UI
932	/* inform the UI code */
933	resizeUI(mScreen->w, mScreen->h);
934	#endif
935	if (mfShowSDLConfig)
936	RTPrintf("Resized to %dx%d, screen surface type: %s\n", mScreen->w, mScreen->h,
937	((mScreen->flags & SDL_HWSURFACE) == 0) ? "software" : "hardware");
938	}
939	repaint();
940	}
941
942	/**
943	* Update specified framebuffer area. The coordinates can either be
944	* relative to the guest framebuffer or relative to the screen.
945	*
946	* @remarks Must be called from the SDL thread on Linux!
947	* @param x left column
948	* @param y top row
949	* @param w width in pixels
950	* @param h height in pixels
951	* @param fGuestRelative flag whether the above values are guest relative or screen relative;
952	*/
953	void VBoxSDLFB::update(int x, int y, int w, int h, bool fGuestRelative)
954	{
955	#ifdef VBOXSDL_WITH_X11
956	AssertMsg(gSdlNativeThread == RTThreadNativeSelf(), ("Wrong thread! SDL is not threadsafe!\n"));
957	#endif
958	Assert(mScreen);
959	Assert(mSurfVRAM);
960	if (!mScreen \|\| !mSurfVRAM)
961	return;
962
963	/* the source and destination rectangles */
964	SDL_Rect srcRect;
965	SDL_Rect dstRect;
966
967	/* this is how many pixels we have to cut off from the height for this specific blit */
968	int yCutoffGuest = 0;
969
970	#ifdef VBOX_SECURELABEL
971	bool fPaintLabel = false;
972	/* if we have a label and no space for it, we have to cut off a bit */
973	if (mLabelHeight && !mTopOffset)
974	{
975	if (y < (int)mLabelHeight)
976	yCutoffGuest = mLabelHeight - y;
977	}
978	#endif
979
980	/**
981	* If we get a SDL window relative update, we
982	* just perform a full screen update to keep things simple.
983	*
984	* @todo improve
985	*/
986	if (!fGuestRelative)
987	{
988	#ifdef VBOX_SECURELABEL
989	/* repaint the label if necessary */
990	if (y < (int)mLabelHeight)
991	fPaintLabel = true;
992	#endif
993	x = 0;
994	w = mGuestXRes;
995	y = 0;
996	h = mGuestYRes;
997	}
998
999	srcRect.x = x;
1000	srcRect.y = y + yCutoffGuest;
1001	srcRect.w = w;
1002	srcRect.h = RT_MAX(0, h - yCutoffGuest);
1003
1004	/*
1005	* Destination rectangle is just offset by the label height.
1006	* There are two cases though: label height is added to the
1007	* guest resolution (mTopOffset == mLabelHeight; yCutoffGuest == 0)
1008	* or the label cuts off a portion of the guest screen (mTopOffset == 0;
1009	* yCutoffGuest >= 0)
1010	*/
1011	dstRect.x = x + mCenterXOffset;
1012	#ifdef VBOX_SECURELABEL
1013	dstRect.y = RT_MAX(mLabelHeight, y + yCutoffGuest + mTopOffset) + mCenterYOffset;
1014	#else
1015	dstRect.y = y + yCutoffGuest + mTopOffset + mCenterYOffset;
1016	#endif
1017	dstRect.w = w;
1018	dstRect.h = RT_MAX(0, h - yCutoffGuest);
1019
1020	/*
1021	* Now we just blit
1022	*/
1023	SDL_BlitSurface(mSurfVRAM, &srcRect, mScreen, &dstRect);
1024	/* hardware surfaces don't need update notifications */
1025	#if defined(VBOX_WITH_SDL13)
1026	AssertRelease(mScreen->flags & SDL_PREALLOC);
1027	SDL_SelectRenderer(mWindow);
1028	SDL_DirtyTexture(mTexture, 1, &dstRect);
1029	AssertRelease(mRenderInfo.flags & SDL_RENDERER_PRESENTCOPY);
1030	SDL_RenderCopy(mTexture, &dstRect, &dstRect);
1031	SDL_RenderPresent();
1032	#else
1033	if ((mScreen->flags & SDL_HWSURFACE) == 0)
1034	SDL_UpdateRect(mScreen, dstRect.x, dstRect.y, dstRect.w, dstRect.h);
1035	#endif
1036
1037	#ifdef VBOX_SECURELABEL
1038	if (fPaintLabel)
1039	paintSecureLabel(0, 0, 0, 0, false);
1040	#endif
1041	}
1042
1043	/**
1044	* Repaint the whole framebuffer
1045	*
1046	* @remarks Must be called from the SDL thread!
1047	*/
1048	void VBoxSDLFB::repaint()
1049	{
1050	AssertMsg(gSdlNativeThread == RTThreadNativeSelf(), ("Wrong thread! SDL is not threadsafe!\n"));
1051	LogFlow(("VBoxSDLFB::repaint\n"));
1052	update(0, 0, mScreen->w, mScreen->h, false /* fGuestRelative */);
1053	}
1054
1055	/**
1056	* Toggle fullscreen mode
1057	*
1058	* @remarks Must be called from the SDL thread!
1059	*/
1060	void VBoxSDLFB::setFullscreen(bool fFullscreen)
1061	{
1062	AssertMsg(gSdlNativeThread == RTThreadNativeSelf(), ("Wrong thread! SDL is not threadsafe!\n"));
1063	LogFlow(("VBoxSDLFB::SetFullscreen: fullscreen: %d\n", fFullscreen));
1064	mfFullscreen = fFullscreen;
1065	/* only change the SDL resolution, do not touch the guest framebuffer */
1066	resizeSDL();
1067	}
1068
1069	/**
1070	* Return the geometry of the host. This isn't very well tested but it seems
1071	* to work at least on Linux hosts.
1072	*/
1073	void VBoxSDLFB::getFullscreenGeometry(uint32_t width, uint32_t height)
1074	{
1075	SDL_Rect **modes;
1076
1077	/* Get available fullscreen/hardware modes */
1078	modes = SDL_ListModes(NULL, SDL_FULLSCREEN);
1079	Assert(modes != NULL);
1080	/* -1 means that any mode is possible (usually non fullscreen) */
1081	if (modes != (SDL_Rect **)-1)
1082	{
1083	/*
1084	* According to the SDL documentation, the API guarantees that the modes
1085	* are sorted from larger to smaller, so we just take the first entry as
1086	* the maximum.
1087	*
1088	* XXX Crude Xinerama hack :-/
1089	*/
1090	if ( modes[0]->w > (16*modes[0]->h/9)
1091	&& modes[1]
1092	&& modes[1]->h == modes[0]->h)
1093	{
1094	*width = modes[1]->w;
1095	*height = modes[1]->h;
1096	}
1097	else
1098	{
1099	*width = modes[0]->w;
1100	*height = modes[0]->w;
1101	}
1102	}
1103	}
1104
1105	#ifdef VBOX_SECURELABEL
1106	/**
1107	* Setup the secure labeling parameters
1108	*
1109	* @returns VBox status code
1110	* @param height height of the secure label area in pixels
1111	* @param font file path fo the TrueType font file
1112	* @param pointsize font size in points
1113	*/
1114	int VBoxSDLFB::initSecureLabel(uint32_t height, char *font, uint32_t pointsize, uint32_t labeloffs)
1115	{
1116	LogFlow(("VBoxSDLFB:initSecureLabel: new offset: %d pixels, new font: %s, new pointsize: %d\n",
1117	height, font, pointsize));
1118	mLabelHeight = height;
1119	mLabelOffs = labeloffs;
1120	Assert(font);
1121	pTTF_Init();
1122	mLabelFont = pTTF_OpenFont(font, pointsize);
1123	if (!mLabelFont)
1124	{
1125	AssertMsgFailed(("Failed to open TTF font file %s\n", font));
1126	return VERR_OPEN_FAILED;
1127	}
1128	mSecureLabelColorFG = 0x0000FF00;
1129	mSecureLabelColorBG = 0x00FFFF00;
1130	repaint();
1131	return VINF_SUCCESS;
1132	}
1133
1134	/**
1135	* Set the secure label text and repaint the label
1136	*
1137	* @param text UTF-8 string of new label
1138	* @remarks must be called from the SDL thread!
1139	*/
1140	void VBoxSDLFB::setSecureLabelText(const char *text)
1141	{
1142	mSecureLabelText = text;
1143	paintSecureLabel(0, 0, 0, 0, true);
1144	}
1145
1146	/**
1147	* Sets the secure label background color.
1148	*
1149	* @param colorFG encoded RGB value for text
1150	* @param colorBG encored RGB value for background
1151	* @remarks must be called from the SDL thread!
1152	*/
1153	void VBoxSDLFB::setSecureLabelColor(uint32_t colorFG, uint32_t colorBG)
1154	{
1155	mSecureLabelColorFG = colorFG;
1156	mSecureLabelColorBG = colorBG;
1157	paintSecureLabel(0, 0, 0, 0, true);
1158	}
1159
1160	/**
1161	* Paint the secure label if required
1162	*
1163	* @param fForce Force the repaint
1164	* @remarks must be called from the SDL thread!
1165	*/
1166	void VBoxSDLFB::paintSecureLabel(int x, int y, int w, int h, bool fForce)
1167	{
1168	#ifdef VBOXSDL_WITH_X11
1169	AssertMsg(gSdlNativeThread == RTThreadNativeSelf(), ("Wrong thread! SDL is not threadsafe!\n"));
1170	#endif
1171	/* only when the function is present */
1172	if (!pTTF_RenderUTF8_Solid)
1173	return;
1174	/* check if we can skip the paint */
1175	if (!fForce && ((uint32_t)y > mLabelHeight))
1176	{
1177	return;
1178	}
1179	/* first fill the background */
1180	SDL_Rect rect = {0, 0, (Uint16)mScreen->w, (Uint16)mLabelHeight};
1181	SDL_FillRect(mScreen, &rect, SDL_MapRGB(mScreen->format,
1182	(mSecureLabelColorBG & 0x00FF0000) >> 16, /* red */
1183	(mSecureLabelColorBG & 0x0000FF00) >> 8, /* green */
1184	mSecureLabelColorBG & 0x000000FF)); /* blue */
1185
1186	/* now the text */
1187	if ( mLabelFont != NULL
1188	&& !mSecureLabelText.isEmpty()
1189	)
1190	{
1191	SDL_Color clrFg = {(uint8_t)((mSecureLabelColorFG & 0x00FF0000) >> 16),
1192	(uint8_t)((mSecureLabelColorFG & 0x0000FF00) >> 8),
1193	(uint8_t)( mSecureLabelColorFG & 0x000000FF ), 0};
1194	SDL_Surface *sText = (pTTF_RenderUTF8_Blended != NULL)
1195	? pTTF_RenderUTF8_Blended(mLabelFont, mSecureLabelText.c_str(), clrFg)
1196	: pTTF_RenderUTF8_Solid(mLabelFont, mSecureLabelText.c_str(), clrFg);
1197	rect.x = 10;
1198	rect.y = mLabelOffs;
1199	SDL_BlitSurface(sText, NULL, mScreen, &rect);
1200	SDL_FreeSurface(sText);
1201	}
1202	/* make sure to update the screen */
1203	SDL_UpdateRect(mScreen, 0, 0, mScreen->w, mLabelHeight);
1204	}
1205	#endif /* VBOX_SECURELABEL */
1206
1207	// IFramebufferOverlay
1208	///////////////////////////////////////////////////////////////////////////////////
1209
1210	/**
1211	* Constructor for the VBoxSDLFBOverlay class (IFramebufferOverlay implementation)
1212	*
1213	* @param x Initial X offset for the overlay
1214	* @param y Initial Y offset for the overlay
1215	* @param width Initial width for the overlay
1216	* @param height Initial height for the overlay
1217	* @param visible Whether the overlay is initially visible
1218	* @param alpha Initial alpha channel value for the overlay
1219	*/
1220	VBoxSDLFBOverlay::VBoxSDLFBOverlay(ULONG x, ULONG y, ULONG width, ULONG height,
1221	BOOL visible, VBoxSDLFB *aParent) :
1222	mOverlayX(x), mOverlayY(y), mOverlayWidth(width),
1223	mOverlayHeight(height), mOverlayVisible(visible),
1224	mParent(aParent)
1225	{}
1226
1227	/**
1228	* Destructor for the VBoxSDLFBOverlay class.
1229	*/
1230	VBoxSDLFBOverlay::~VBoxSDLFBOverlay()
1231	{
1232	SDL_FreeSurface(mBlendedBits);
1233	SDL_FreeSurface(mOverlayBits);
1234	}
1235
1236	/**
1237	* Perform any initialisation of the overlay that can potentially fail
1238	*
1239	* @returns S_OK on success or the reason for the failure
1240	*/
1241	HRESULT VBoxSDLFBOverlay::init()
1242	{
1243	mBlendedBits = SDL_CreateRGBSurface(SDL_ANYFORMAT, mOverlayWidth, mOverlayHeight, 32,
1244	0x00ff0000, 0x0000ff00, 0x000000ff, 0);
1245	AssertMsgReturn(mBlendedBits != NULL, ("Failed to create an SDL surface\n"),
1246	E_OUTOFMEMORY);
1247	mOverlayBits = SDL_CreateRGBSurface(SDL_SWSURFACE \| SDL_SRCALPHA, mOverlayWidth,
1248	mOverlayHeight, 32, 0x00ff0000, 0x0000ff00,
1249	0x000000ff, 0xff000000);
1250	AssertMsgReturn(mOverlayBits != NULL, ("Failed to create an SDL surface\n"),
1251	E_OUTOFMEMORY);
1252	return S_OK;
1253	}
1254
1255	/**
1256	* Returns the current overlay X offset in pixels.
1257	*
1258	* @returns COM status code
1259	* @param x Address of result buffer.
1260	*/
1261	STDMETHODIMP VBoxSDLFBOverlay::COMGETTER(X)(ULONG *x)
1262	{
1263	LogFlow(("VBoxSDLFBOverlay::GetX\n"));
1264	if (!x)
1265	return E_INVALIDARG;
1266	*x = mOverlayX;
1267	return S_OK;
1268	}
1269
1270	/**
1271	* Returns the current overlay height in pixels.
1272	*
1273	* @returns COM status code
1274	* @param height Address of result buffer.
1275	*/
1276	STDMETHODIMP VBoxSDLFBOverlay::COMGETTER(Y)(ULONG *y)
1277	{
1278	LogFlow(("VBoxSDLFBOverlay::GetY\n"));
1279	if (!y)
1280	return E_INVALIDARG;
1281	*y = mOverlayY;
1282	return S_OK;
1283	}
1284
1285	/**
1286	* Returns the current overlay width in pixels. In fact, this returns the line size.
1287	*
1288	* @returns COM status code
1289	* @param width Address of result buffer.
1290	*/
1291	STDMETHODIMP VBoxSDLFBOverlay::COMGETTER(Width)(ULONG *width)
1292	{
1293	LogFlow(("VBoxSDLFBOverlay::GetWidth\n"));
1294	if (!width)
1295	return E_INVALIDARG;
1296	*width = mOverlayBits->pitch;
1297	return S_OK;
1298	}
1299
1300	/**
1301	* Returns the current overlay line size in pixels.
1302	*
1303	* @returns COM status code
1304	* @param lineSize Address of result buffer.
1305	*/
1306	STDMETHODIMP VBoxSDLFBOverlay::COMGETTER(BytesPerLine)(ULONG *bytesPerLine)
1307	{
1308	LogFlow(("VBoxSDLFBOverlay::GetBytesPerLine\n"));
1309	if (!bytesPerLine)
1310	return E_INVALIDARG;
1311	*bytesPerLine = mOverlayBits->pitch;
1312	return S_OK;
1313	}
1314
1315	/**
1316	* Returns the current overlay height in pixels.
1317	*
1318	* @returns COM status code
1319	* @param height Address of result buffer.
1320	*/
1321	STDMETHODIMP VBoxSDLFBOverlay::COMGETTER(Height)(ULONG *height)
1322	{
1323	LogFlow(("VBoxSDLFBOverlay::GetHeight\n"));
1324	if (!height)
1325	return E_INVALIDARG;
1326	*height = mOverlayHeight;
1327	return S_OK;
1328	}
1329
1330	/**
1331	* Returns whether the overlay is currently visible.
1332	*
1333	* @returns COM status code
1334	* @param visible Address of result buffer.
1335	*/
1336	STDMETHODIMP VBoxSDLFBOverlay::COMGETTER(Visible)(BOOL *visible)
1337	{
1338	LogFlow(("VBoxSDLFBOverlay::GetVisible\n"));
1339	if (!visible)
1340	return E_INVALIDARG;
1341	*visible = mOverlayVisible;
1342	return S_OK;
1343	}
1344
1345	/**
1346	* Sets whether the overlay is currently visible.
1347	*
1348	* @returns COM status code
1349	* @param visible New value.
1350	*/
1351	STDMETHODIMP VBoxSDLFBOverlay::COMSETTER(Visible)(BOOL visible)
1352	{
1353	LogFlow(("VBoxSDLFBOverlay::SetVisible\n"));
1354	mOverlayVisible = visible;
1355	return S_OK;
1356	}
1357
1358	/**
1359	* Returns the value of the global alpha channel.
1360	*
1361	* @returns COM status code
1362	* @param alpha Address of result buffer.
1363	*/
1364	STDMETHODIMP VBoxSDLFBOverlay::COMGETTER(Alpha)(ULONG *alpha)
1365	{
1366	LogFlow(("VBoxSDLFBOverlay::GetAlpha\n"));
1367	return E_NOTIMPL;
1368	}
1369
1370	/**
1371	* Sets whether the overlay is currently visible.
1372	*
1373	* @returns COM status code
1374	* @param alpha new value.
1375	*/
1376	STDMETHODIMP VBoxSDLFBOverlay::COMSETTER(Alpha)(ULONG alpha)
1377	{
1378	LogFlow(("VBoxSDLFBOverlay::SetAlpha\n"));
1379	return E_NOTIMPL;
1380	}
1381
1382	/**
1383	* Returns the address of the framebuffer bits for writing to.
1384	*
1385	* @returns COM status code
1386	* @param alpha Address of result buffer.
1387	*/
1388	STDMETHODIMP VBoxSDLFBOverlay::COMGETTER(Address)(ULONG *address)
1389	{
1390	LogFlow(("VBoxSDLFBOverlay::GetAddress\n"));
1391	if (!address)
1392	return E_INVALIDARG;
1393	*address = (uintptr_t) mOverlayBits->pixels;
1394	return S_OK;
1395	}
1396
1397	/**
1398	* Returns the current colour depth. In fact, this is always 32bpp.
1399	*
1400	* @returns COM status code
1401	* @param bitsPerPixel Address of result buffer.
1402	*/
1403	STDMETHODIMP VBoxSDLFBOverlay::COMGETTER(BitsPerPixel)(ULONG *bitsPerPixel)
1404	{
1405	LogFlow(("VBoxSDLFBOverlay::GetBitsPerPixel\n"));
1406	if (!bitsPerPixel)
1407	return E_INVALIDARG;
1408	*bitsPerPixel = 32;
1409	return S_OK;
1410	}
1411
1412	/**
1413	* Returns the current pixel format. In fact, this is always RGB.
1414	*
1415	* @returns COM status code
1416	* @param pixelFormat Address of result buffer.
1417	*/
1418	STDMETHODIMP VBoxSDLFBOverlay::COMGETTER(PixelFormat)(ULONG *pixelFormat)
1419	{
1420	LogFlow(("VBoxSDLFBOverlay::GetPixelFormat\n"));
1421	if (!pixelFormat)
1422	return E_INVALIDARG;
1423	*pixelFormat = FramebufferPixelFormat_FOURCC_RGB;
1424	return S_OK;
1425	}
1426
1427	/**
1428	* Returns whether the guest VRAM is used directly. In fact, this is always FALSE.
1429	*
1430	* @returns COM status code
1431	* @param usesGuestVRAM Address of result buffer.
1432	*/
1433	STDMETHODIMP VBoxSDLFBOverlay::COMGETTER(UsesGuestVRAM)(BOOL *usesGuestVRAM)
1434	{
1435	LogFlow(("VBoxSDLFBOverlay::GetUsesGuestVRAM\n"));
1436	if (!usesGuestVRAM)
1437	return E_INVALIDARG;
1438	*usesGuestVRAM = FALSE;
1439	return S_OK;
1440	}
1441
1442	/**
1443	* Returns the height reduction. In fact, this is always 0.
1444	*
1445	* @returns COM status code
1446	* @param heightReduction Address of result buffer.
1447	*/
1448	STDMETHODIMP VBoxSDLFBOverlay::COMGETTER(HeightReduction)(ULONG *heightReduction)
1449	{
1450	LogFlow(("VBoxSDLFBOverlay::GetHeightReduction\n"));
1451	if (!heightReduction)
1452	return E_INVALIDARG;
1453	*heightReduction = 0;
1454	return S_OK;
1455	}
1456
1457	/**
1458	* Returns the overlay for this framebuffer. Obviously, we return NULL here.
1459	*
1460	* @returns COM status code
1461	* @param overlay Address of result buffer.
1462	*/
1463	STDMETHODIMP VBoxSDLFBOverlay::COMGETTER(Overlay)(IFramebufferOverlay **aOverlay)
1464	{
1465	LogFlow(("VBoxSDLFBOverlay::GetOverlay\n"));
1466	if (!aOverlay)
1467	return E_INVALIDARG;
1468	*aOverlay = 0;
1469	return S_OK;
1470	}
1471
1472	/**
1473	* Returns associated window handle. We return NULL here.
1474	*
1475	* @returns COM status code
1476	* @param winId Address of result buffer.
1477	*/
1478	STDMETHODIMP VBoxSDLFBOverlay::COMGETTER(WinId)(LONG64 *winId)
1479	{
1480	LogFlow(("VBoxSDLFBOverlay::GetWinId\n"));
1481	if (!winId)
1482	return E_INVALIDARG;
1483	*winId = 0;
1484	return S_OK;
1485	}
1486
1487
1488	/**
1489	* Lock the overlay. This should not be used - lock the parent IFramebuffer instead.
1490	*
1491	* @returns COM status code
1492	*/
1493	STDMETHODIMP VBoxSDLFBOverlay::Lock()
1494	{
1495	LogFlow(("VBoxSDLFBOverlay::Lock\n"));
1496	AssertMsgFailed(("You should not attempt to lock an IFramebufferOverlay object -\n"
1497	"lock the parent IFramebuffer object instead.\n"));
1498	return E_NOTIMPL;
1499	}
1500
1501	/**
1502	* Unlock the overlay.
1503	*
1504	* @returns COM status code
1505	*/
1506	STDMETHODIMP VBoxSDLFBOverlay::Unlock()
1507	{
1508	LogFlow(("VBoxSDLFBOverlay::Unlock\n"));
1509	AssertMsgFailed(("You should not attempt to lock an IFramebufferOverlay object -\n"
1510	"lock the parent IFramebuffer object instead.\n"));
1511	return E_NOTIMPL;
1512	}
1513
1514	/**
1515	* Change the X and Y co-ordinates of the overlay area.
1516	*
1517	* @returns COM status code
1518	* @param x New X co-ordinate.
1519	* @param y New Y co-ordinate.
1520	*/
1521	STDMETHODIMP VBoxSDLFBOverlay::Move(ULONG x, ULONG y)
1522	{
1523	mOverlayX = x;
1524	mOverlayY = y;
1525	return S_OK;
1526	}
1527
1528	/**
1529	* Notify the overlay that a section of the framebuffer has been redrawn.
1530	*
1531	* @returns COM status code
1532	* @param x X co-ordinate of upper left corner of modified area.
1533	* @param y Y co-ordinate of upper left corner of modified area.
1534	* @param w Width of modified area.
1535	* @param h Height of modified area.
1536	* @retval finished Set if the operation has completed.
1537	*
1538	* All we do here is to send a request to the parent to update the affected area,
1539	* translating between our co-ordinate system and the parent's. It would be have
1540	* been better to call the parent directly, but such is life. We leave bounds
1541	* checking to the parent.
1542	*/
1543	STDMETHODIMP VBoxSDLFBOverlay::NotifyUpdate(ULONG x, ULONG y,
1544	ULONG w, ULONG h)
1545	{
1546	return mParent->NotifyUpdate(x + mOverlayX, y + mOverlayY, w, h);
1547	}
1548
1549	/**
1550	* Change the dimensions of the overlay.
1551	*
1552	* @returns COM status code
1553	* @param pixelFormat Must be FramebufferPixelFormat_PixelFormatRGB32.
1554	* @param vram Must be NULL.
1555	* @param lineSize Ignored.
1556	* @param w New overlay width.
1557	* @param h New overlay height.
1558	* @retval finished Set if the operation has completed.
1559	*/
1560	STDMETHODIMP VBoxSDLFBOverlay::RequestResize(ULONG aScreenId, ULONG pixelFormat, ULONG vram,
1561	ULONG bitsPerPixel, ULONG bytesPerLine,
1562	ULONG w, ULONG h, BOOL *finished)
1563	{
1564	AssertReturn(pixelFormat == FramebufferPixelFormat_FOURCC_RGB, E_INVALIDARG);
1565	AssertReturn(vram == 0, E_INVALIDARG);
1566	AssertReturn(bitsPerPixel == 32, E_INVALIDARG);
1567	mOverlayWidth = w;
1568	mOverlayHeight = h;
1569	SDL_FreeSurface(mOverlayBits);
1570	mBlendedBits = SDL_CreateRGBSurface(SDL_ANYFORMAT, mOverlayWidth, mOverlayHeight, 32,
1571	0x00ff0000, 0x0000ff00, 0x000000ff, 0);
1572	AssertMsgReturn(mBlendedBits != NULL, ("Failed to create an SDL surface\n"),
1573	E_OUTOFMEMORY);
1574	mOverlayBits = SDL_CreateRGBSurface(SDL_SWSURFACE \| SDL_SRCALPHA, mOverlayWidth,
1575	mOverlayHeight, 32, 0x00ff0000, 0x0000ff00,
1576	0x000000ff, 0xff000000);
1577	AssertMsgReturn(mOverlayBits != NULL, ("Failed to create an SDL surface\n"),
1578	E_OUTOFMEMORY);
1579	return S_OK;
1580	}
1581
1582	/**
1583	* Returns whether we like the given video mode.
1584	*
1585	* @returns COM status code
1586	* @param width video mode width in pixels
1587	* @param height video mode height in pixels
1588	* @param bpp video mode bit depth in bits per pixel
1589	* @retval supported pointer to result variable
1590	*
1591	* Basically, we support anything with 32bpp.
1592	*/
1593	STDMETHODIMP VBoxSDLFBOverlay::VideoModeSupported(ULONG width, ULONG height, ULONG bpp,
1594	BOOL *supported)
1595	{
1596	if (!supported)
1597	return E_POINTER;
1598	if (bpp == 32)
1599	*supported = true;
1600	else
1601	*supported = false;
1602	return S_OK;
1603	}

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source: vbox/trunk/src/VBox/Frontends/VBoxSDL/Framebuffer.cpp@ 50406

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