Framebuffer.cpp@ 76553

Last change on this file since 76553 was 76553, checked in by vboxsync, 6 years ago
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1	/* $Id: Framebuffer.cpp 76553 2019-01-01 01:45:53Z vboxsync $ */
2	/** @file
3	* VBoxSDL - Implementation of VBoxSDLFB (SDL framebuffer) class
4	*/
5
6	/*
7	* Copyright (C) 2006-2019 Oracle Corporation
8	*
9	* This file is part of VirtualBox Open Source Edition (OSE), as
10	* available from http://www.virtualbox.org. This file is free software;
11	* you can redistribute it and/or modify it under the terms of the GNU
12	* General Public License (GPL) as published by the Free Software
13	* Foundation, in version 2 as it comes in the "COPYING" file of the
14	* VirtualBox OSE distribution. VirtualBox OSE is distributed in the
15	* hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
16	*/
17
18	#include <VBox/com/com.h>
19	#include <VBox/com/array.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	# ifdef _MSC_VER
46	# pragma warning(push)
47	# pragma warning(disable: 4121) /* warning C4121: 'SDL_SysWMmsg' : alignment of a member was sensitive to packing*/
48	# endif
49	# include <SDL_syswm.h> /* for SDL_GetWMInfo() */
50	# ifdef _MSC_VER
51	# pragma warning(pop)
52	# endif
53	#endif
54
55	#if defined(VBOX_WITH_XPCOM)
56	NS_IMPL_THREADSAFE_ISUPPORTS1_CI(VBoxSDLFB, IFramebuffer)
57	NS_DECL_CLASSINFO(VBoxSDLFB)
58	NS_IMPL_THREADSAFE_ISUPPORTS2_CI(VBoxSDLFBOverlay, IFramebufferOverlay, IFramebuffer)
59	NS_DECL_CLASSINFO(VBoxSDLFBOverlay)
60	#endif
61
62	#ifdef VBOX_SECURELABEL
63	/* function pointers */
64	extern "C"
65	{
66	DECLSPEC int (SDLCALL *pTTF_Init)(void);
67	DECLSPEC TTF_Font* (SDLCALL pTTF_OpenFont)(const char file, int ptsize);
68	DECLSPEC SDL_Surface* (SDLCALL pTTF_RenderUTF8_Solid)(TTF_Font font, const char *text, SDL_Color fg);
69	DECLSPEC SDL_Surface* (SDLCALL pTTF_RenderUTF8_Blended)(TTF_Font font, const char *text, SDL_Color fg);
70	DECLSPEC void (SDLCALL pTTF_CloseFont)(TTF_Font font);
71	DECLSPEC void (SDLCALL *pTTF_Quit)(void);
72	}
73	#endif /* VBOX_SECURELABEL */
74
75	static bool gfSdlInitialized = false; /*< if SDL was initialized /
76	static SDL_Surface gWMIcon = NULL; /< the application icon /
77	static RTNATIVETHREAD gSdlNativeThread = NIL_RTNATIVETHREAD; /*< the SDL thread /
78
79	//
80	// Constructor / destructor
81	//
82
83	VBoxSDLFB::VBoxSDLFB()
84	{
85	}
86
87	HRESULT VBoxSDLFB::FinalConstruct()
88	{
89	return 0;
90	}
91
92	void VBoxSDLFB::FinalRelease()
93	{
94	return;
95	}
96
97	/**
98	* SDL framebuffer constructor. It is called from the main
99	* (i.e. SDL) thread. Therefore it is safe to use SDL calls
100	* here.
101	* @param fFullscreen flag whether we start in fullscreen mode
102	* @param fResizable flag whether the SDL window should be resizable
103	* @param fShowSDLConfig flag whether we print out SDL settings
104	* @param fKeepHostRes flag whether we switch the host screen resolution
105	* when switching to fullscreen or not
106	* @param iFixedWidth fixed SDL width (-1 means not set)
107	* @param iFixedHeight fixed SDL height (-1 means not set)
108	*/
109	HRESULT VBoxSDLFB::init(uint32_t uScreenId,
110	bool fFullscreen, bool fResizable, bool fShowSDLConfig,
111	bool fKeepHostRes, uint32_t u32FixedWidth,
112	uint32_t u32FixedHeight, uint32_t u32FixedBPP,
113	bool fUpdateImage)
114	{
115	int rc;
116	LogFlow(("VBoxSDLFB::VBoxSDLFB\n"));
117
118	mScreenId = uScreenId;
119	mfUpdateImage = fUpdateImage;
120	mScreen = NULL;
121	#ifdef VBOX_WITH_SDL13
122	mWindow = 0;
123	mTexture = 0;
124	#endif
125	mSurfVRAM = NULL;
126	mfInitialized = false;
127	mfFullscreen = fFullscreen;
128	mfKeepHostRes = fKeepHostRes;
129	mTopOffset = 0;
130	mfResizable = fResizable;
131	mfShowSDLConfig = fShowSDLConfig;
132	mFixedSDLWidth = u32FixedWidth;
133	mFixedSDLHeight = u32FixedHeight;
134	mFixedSDLBPP = u32FixedBPP;
135	mCenterXOffset = 0;
136	mCenterYOffset = 0;
137	/* Start with standard screen dimensions. */
138	mGuestXRes = 640;
139	mGuestYRes = 480;
140	mPtrVRAM = NULL;
141	mBitsPerPixel = 0;
142	mBytesPerLine = 0;
143	mfSameSizeRequested = false;
144	#ifdef VBOX_SECURELABEL
145	mLabelFont = NULL;
146	mLabelHeight = 0;
147	mLabelOffs = 0;
148	#endif
149
150	mfUpdates = false;
151
152	rc = RTCritSectInit(&mUpdateLock);
153	AssertMsg(rc == VINF_SUCCESS, ("Error from RTCritSectInit!\n"));
154
155	resizeGuest();
156	Assert(mScreen);
157	mfInitialized = true;
158	#ifdef RT_OS_WINDOWS
159	HRESULT hr = CoCreateFreeThreadedMarshaler(this, m_pUnkMarshaler.asOutParam());
160	Log(("CoCreateFreeThreadedMarshaler hr %08X\n", hr)); NOREF(hr);
161	#endif
162
163	return 0;
164	}
165
166	VBoxSDLFB::~VBoxSDLFB()
167	{
168	LogFlow(("VBoxSDLFB::~VBoxSDLFB\n"));
169	if (mSurfVRAM)
170	{
171	SDL_FreeSurface(mSurfVRAM);
172	mSurfVRAM = NULL;
173	}
174	mScreen = NULL;
175
176	#ifdef VBOX_SECURELABEL
177	if (mLabelFont)
178	pTTF_CloseFont(mLabelFont);
179	if (pTTF_Quit)
180	pTTF_Quit();
181	#endif
182
183	RTCritSectDelete(&mUpdateLock);
184	}
185
186	bool VBoxSDLFB::init(bool fShowSDLConfig)
187	{
188	LogFlow(("VBoxSDLFB::init\n"));
189
190	/* memorize the thread that inited us, that's the SDL thread */
191	gSdlNativeThread = RTThreadNativeSelf();
192
193	#ifdef RT_OS_WINDOWS
194	/* default to DirectX if nothing else set */
195	if (!RTEnvExist("SDL_VIDEODRIVER"))
196	{
197	_putenv("SDL_VIDEODRIVER=directx");
198	// _putenv("SDL_VIDEODRIVER=windib");
199	}
200	#endif
201	#ifdef VBOXSDL_WITH_X11
202	/* On some X servers the mouse is stuck inside the bottom right corner.
203	* See http://wiki.clug.org.za/wiki/QEMU_mouse_not_working */
204	RTEnvSet("SDL_VIDEO_X11_DGAMOUSE", "0");
205	#endif
206	int rc = SDL_InitSubSystem(SDL_INIT_VIDEO \| SDL_INIT_TIMER \| SDL_INIT_NOPARACHUTE);
207	if (rc != 0)
208	{
209	RTPrintf("SDL Error: '%s'\n", SDL_GetError());
210	return false;
211	}
212	gfSdlInitialized = true;
213
214	const SDL_VideoInfo *videoInfo = SDL_GetVideoInfo();
215	Assert(videoInfo);
216	if (videoInfo)
217	{
218	/* output what SDL is capable of */
219	if (fShowSDLConfig)
220	RTPrintf("SDL capabilities:\n"
221	" Hardware surface support: %s\n"
222	" Window manager available: %s\n"
223	" Screen to screen blits accelerated: %s\n"
224	" Screen to screen colorkey blits accelerated: %s\n"
225	" Screen to screen alpha blits accelerated: %s\n"
226	" Memory to screen blits accelerated: %s\n"
227	" Memory to screen colorkey blits accelerated: %s\n"
228	" Memory to screen alpha blits accelerated: %s\n"
229	" Color fills accelerated: %s\n"
230	" Video memory in kilobytes: %d\n"
231	" Optimal bpp mode: %d\n"
232	"SDL video driver: %s\n",
233	videoInfo->hw_available ? "yes" : "no",
234	videoInfo->wm_available ? "yes" : "no",
235	videoInfo->blit_hw ? "yes" : "no",
236	videoInfo->blit_hw_CC ? "yes" : "no",
237	videoInfo->blit_hw_A ? "yes" : "no",
238	videoInfo->blit_sw ? "yes" : "no",
239	videoInfo->blit_sw_CC ? "yes" : "no",
240	videoInfo->blit_sw_A ? "yes" : "no",
241	videoInfo->blit_fill ? "yes" : "no",
242	videoInfo->video_mem,
243	videoInfo->vfmt->BitsPerPixel,
244	RTEnvGet("SDL_VIDEODRIVER"));
245	}
246
247	if (12320 == g_cbIco64x01)
248	{
249	gWMIcon = SDL_AllocSurface(SDL_SWSURFACE, 64, 64, 24, 0xff, 0xff00, 0xff0000, 0);
250	/** @todo make it as simple as possible. No PNM interpreter here... */
251	if (gWMIcon)
252	{
253	memcpy(gWMIcon->pixels, g_abIco64x01+32, g_cbIco64x01-32);
254	SDL_WM_SetIcon(gWMIcon, NULL);
255	}
256	}
257
258	return true;
259	}
260
261	/**
262	* Terminate SDL
263	*
264	* @remarks must be called from the SDL thread!
265	*/
266	void VBoxSDLFB::uninit()
267	{
268	if (gfSdlInitialized)
269	{
270	AssertMsg(gSdlNativeThread == RTThreadNativeSelf(), ("Wrong thread! SDL is not threadsafe!\n"));
271	SDL_QuitSubSystem(SDL_INIT_VIDEO);
272	if (gWMIcon)
273	{
274	SDL_FreeSurface(gWMIcon);
275	gWMIcon = NULL;
276	}
277	}
278	}
279
280	/**
281	* Returns the current framebuffer width in pixels.
282	*
283	* @returns COM status code
284	* @param width Address of result buffer.
285	*/
286	STDMETHODIMP VBoxSDLFB::COMGETTER(Width)(ULONG *width)
287	{
288	LogFlow(("VBoxSDLFB::GetWidth\n"));
289	if (!width)
290	return E_INVALIDARG;
291	*width = mGuestXRes;
292	return S_OK;
293	}
294
295	/**
296	* Returns the current framebuffer height in pixels.
297	*
298	* @returns COM status code
299	* @param height Address of result buffer.
300	*/
301	STDMETHODIMP VBoxSDLFB::COMGETTER(Height)(ULONG *height)
302	{
303	LogFlow(("VBoxSDLFB::GetHeight\n"));
304	if (!height)
305	return E_INVALIDARG;
306	*height = mGuestYRes;
307	return S_OK;
308	}
309
310	/**
311	* Return the current framebuffer color depth.
312	*
313	* @returns COM status code
314	* @param bitsPerPixel Address of result variable
315	*/
316	STDMETHODIMP VBoxSDLFB::COMGETTER(BitsPerPixel)(ULONG *bitsPerPixel)
317	{
318	LogFlow(("VBoxSDLFB::GetBitsPerPixel\n"));
319	if (!bitsPerPixel)
320	return E_INVALIDARG;
321	/* get the information directly from the surface in use */
322	Assert(mSurfVRAM);
323	*bitsPerPixel = (ULONG)(mSurfVRAM ? mSurfVRAM->format->BitsPerPixel : 0);
324	return S_OK;
325	}
326
327	/**
328	* Return the current framebuffer line size in bytes.
329	*
330	* @returns COM status code.
331	* @param lineSize Address of result variable.
332	*/
333	STDMETHODIMP VBoxSDLFB::COMGETTER(BytesPerLine)(ULONG *bytesPerLine)
334	{
335	LogFlow(("VBoxSDLFB::GetBytesPerLine\n"));
336	if (!bytesPerLine)
337	return E_INVALIDARG;
338	/* get the information directly from the surface */
339	Assert(mSurfVRAM);
340	*bytesPerLine = (ULONG)(mSurfVRAM ? mSurfVRAM->pitch : 0);
341	return S_OK;
342	}
343
344	STDMETHODIMP VBoxSDLFB::COMGETTER(PixelFormat) (BitmapFormat_T *pixelFormat)
345	{
346	if (!pixelFormat)
347	return E_POINTER;
348	*pixelFormat = BitmapFormat_BGR;
349	return S_OK;
350	}
351
352	/**
353	* Returns by how many pixels the guest should shrink its
354	* video mode height values.
355	*
356	* @returns COM status code.
357	* @param heightReduction Address of result variable.
358	*/
359	STDMETHODIMP VBoxSDLFB::COMGETTER(HeightReduction)(ULONG *heightReduction)
360	{
361	if (!heightReduction)
362	return E_POINTER;
363	#ifdef VBOX_SECURELABEL
364	*heightReduction = mLabelHeight;
365	#else
366	*heightReduction = 0;
367	#endif
368	return S_OK;
369	}
370
371	/**
372	* Returns a pointer to an alpha-blended overlay used for displaying status
373	* icons above the framebuffer.
374	*
375	* @returns COM status code.
376	* @param aOverlay The overlay framebuffer.
377	*/
378	STDMETHODIMP VBoxSDLFB::COMGETTER(Overlay)(IFramebufferOverlay **aOverlay)
379	{
380	if (!aOverlay)
381	return E_POINTER;
382	/* Not yet implemented */
383	*aOverlay = 0;
384	return S_OK;
385	}
386
387	/**
388	* Returns handle of window where framebuffer context is being drawn
389	*
390	* @returns COM status code.
391	* @param winId Handle of associated window.
392	*/
393	STDMETHODIMP VBoxSDLFB::COMGETTER(WinId)(LONG64 *winId)
394	{
395	if (!winId)
396	return E_POINTER;
397	#ifdef RT_OS_DARWIN
398	if (mWinId == NULL) /* (In case it failed the first time.) */
399	mWinId = (intptr_t)VBoxSDLGetDarwinWindowId();
400	#endif
401	*winId = mWinId;
402	return S_OK;
403	}
404
405	STDMETHODIMP VBoxSDLFB::COMGETTER(Capabilities)(ComSafeArrayOut(FramebufferCapabilities_T, aCapabilities))
406	{
407	if (ComSafeArrayOutIsNull(aCapabilities))
408	return E_POINTER;
409
410	com::SafeArray<FramebufferCapabilities_T> caps;
411
412	if (mfUpdateImage)
413	{
414	caps.resize(1);
415	caps[0] = FramebufferCapabilities_UpdateImage;
416	}
417	else
418	{
419	/* No caps to return. */
420	}
421
422	caps.detachTo(ComSafeArrayOutArg(aCapabilities));
423	return S_OK;
424	}
425
426	/**
427	* Notify framebuffer of an update.
428	*
429	* @returns COM status code
430	* @param x Update region upper left corner x value.
431	* @param y Update region upper left corner y value.
432	* @param w Update region width in pixels.
433	* @param h Update region height in pixels.
434	* @param finished Address of output flag whether the update
435	* could be fully processed in this call (which
436	* has to return immediately) or VBox should wait
437	* for a call to the update complete API before
438	* continuing with display updates.
439	*/
440	STDMETHODIMP VBoxSDLFB::NotifyUpdate(ULONG x, ULONG y,
441	ULONG w, ULONG h)
442	{
443	/*
444	* The input values are in guest screen coordinates.
445	*/
446	LogFlow(("VBoxSDLFB::NotifyUpdate: x = %d, y = %d, w = %d, h = %d\n",
447	x, y, w, h));
448
449	#ifdef VBOXSDL_WITH_X11
450	/*
451	* SDL does not allow us to make this call from any other thread than
452	* the main SDL thread (which initialized the video mode). So we have
453	* to send an event to the main SDL thread and process it there. For
454	* sake of simplicity, we encode all information in the event parameters.
455	*/
456	SDL_Event event;
457	event.type = SDL_USEREVENT;
458	event.user.code = mScreenId;
459	event.user.type = SDL_USER_EVENT_UPDATERECT;
460	// 16 bit is enough for coordinates
461	event.user.data1 = (void*)(uintptr_t)(x << 16 \| y);
462	event.user.data2 = (void*)(uintptr_t)(w << 16 \| h);
463	PushNotifyUpdateEvent(&event);
464	#else /* !VBOXSDL_WITH_X11 */
465	update(x, y, w, h, true /* fGuestRelative */);
466	#endif /* !VBOXSDL_WITH_X11 */
467
468	return S_OK;
469	}
470
471	STDMETHODIMP VBoxSDLFB::NotifyUpdateImage(ULONG aX,
472	ULONG aY,
473	ULONG aWidth,
474	ULONG aHeight,
475	ComSafeArrayIn(BYTE, aImage))
476	{
477	LogFlow(("NotifyUpdateImage: %d,%d %dx%d\n", aX, aY, aWidth, aHeight));
478
479	com::SafeArray<BYTE> image(ComSafeArrayInArg(aImage));
480
481	/* Copy to mSurfVRAM. */
482	SDL_Rect srcRect;
483	SDL_Rect dstRect;
484	srcRect.x = 0;
485	srcRect.y = 0;
486	srcRect.w = (uint16_t)aWidth;
487	srcRect.h = (uint16_t)aHeight;
488	dstRect.x = (int16_t)aX;
489	dstRect.y = (int16_t)aY;
490	dstRect.w = (uint16_t)aWidth;
491	dstRect.h = (uint16_t)aHeight;
492
493	const uint32_t Rmask = 0x00FF0000, Gmask = 0x0000FF00, Bmask = 0x000000FF, Amask = 0;
494	SDL_Surface surfSrc = SDL_CreateRGBSurfaceFrom(image.raw(), aWidth, aHeight, 32, aWidth 4,
495	Rmask, Gmask, Bmask, Amask);
496	if (surfSrc)
497	{
498	RTCritSectEnter(&mUpdateLock);
499	if (mfUpdates)
500	SDL_BlitSurface(surfSrc, &srcRect, mSurfVRAM, &dstRect);
501	RTCritSectLeave(&mUpdateLock);
502
503	SDL_FreeSurface(surfSrc);
504	}
505
506	return NotifyUpdate(aX, aY, aWidth, aHeight);
507	}
508
509	extern ComPtr<IDisplay> gpDisplay;
510
511	STDMETHODIMP VBoxSDLFB::NotifyChange(ULONG aScreenId,
512	ULONG aXOrigin,
513	ULONG aYOrigin,
514	ULONG aWidth,
515	ULONG aHeight)
516	{
517	LogRel(("NotifyChange: %d %d,%d %dx%d\n",
518	aScreenId, aXOrigin, aYOrigin, aWidth, aHeight));
519
520	ComPtr<IDisplaySourceBitmap> pSourceBitmap;
521	if (!mfUpdateImage)
522	gpDisplay->QuerySourceBitmap(aScreenId, pSourceBitmap.asOutParam());
523
524	RTCritSectEnter(&mUpdateLock);
525
526	/* Disable screen updates. */
527	mfUpdates = false;
528
529	if (mfUpdateImage)
530	{
531	mGuestXRes = aWidth;
532	mGuestYRes = aHeight;
533	mPtrVRAM = NULL;
534	mBitsPerPixel = 0;
535	mBytesPerLine = 0;
536	}
537	else
538	{
539	/* Save the new bitmap. */
540	mpPendingSourceBitmap = pSourceBitmap;
541	}
542
543	RTCritSectLeave(&mUpdateLock);
544
545	SDL_Event event;
546	event.type = SDL_USEREVENT;
547	event.user.type = SDL_USER_EVENT_NOTIFYCHANGE;
548	event.user.code = mScreenId;
549
550	PushSDLEventForSure(&event);
551
552	RTThreadYield();
553
554	return S_OK;
555	}
556
557	/**
558	* Returns whether we like the given video mode.
559	*
560	* @returns COM status code
561	* @param width video mode width in pixels
562	* @param height video mode height in pixels
563	* @param bpp video mode bit depth in bits per pixel
564	* @param supported pointer to result variable
565	*/
566	STDMETHODIMP VBoxSDLFB::VideoModeSupported(ULONG width, ULONG height, ULONG bpp, BOOL *supported)
567	{
568	RT_NOREF(bpp);
569
570	if (!supported)
571	return E_POINTER;
572
573	/* are constraints set? */
574	if ( ( (mMaxScreenWidth != ~(uint32_t)0)
575	&& (width > mMaxScreenWidth))
576	\|\| ( (mMaxScreenHeight != ~(uint32_t)0)
577	&& (height > mMaxScreenHeight)))
578	{
579	/* nope, we don't want that (but still don't freak out if it is set) */
580	#ifdef DEBUG
581	printf("VBoxSDL::VideoModeSupported: we refused mode %dx%dx%d\n", width, height, bpp);
582	#endif
583	*supported = false;
584	}
585	else
586	{
587	/* anything will do */
588	*supported = true;
589	}
590	return S_OK;
591	}
592
593	STDMETHODIMP VBoxSDLFB::GetVisibleRegion(BYTE *aRectangles, ULONG aCount,
594	ULONG *aCountCopied)
595	{
596	PRTRECT rects = (PRTRECT)aRectangles;
597
598	if (!rects)
599	return E_POINTER;
600
601	/// @todo
602
603	NOREF(aCount);
604	NOREF(aCountCopied);
605
606	return S_OK;
607	}
608
609	STDMETHODIMP VBoxSDLFB::SetVisibleRegion(BYTE *aRectangles, ULONG aCount)
610	{
611	PRTRECT rects = (PRTRECT)aRectangles;
612
613	if (!rects)
614	return E_POINTER;
615
616	/// @todo
617
618	NOREF(aCount);
619
620	return S_OK;
621	}
622
623	STDMETHODIMP VBoxSDLFB::ProcessVHWACommand(BYTE *pCommand, LONG enmCmd, BOOL fGuestCmd)
624	{
625	RT_NOREF(pCommand, enmCmd, fGuestCmd);
626	return E_NOTIMPL;
627	}
628
629	STDMETHODIMP VBoxSDLFB::Notify3DEvent(ULONG uType, ComSafeArrayIn(BYTE, aData))
630	{
631	RT_NOREF(uType); ComSafeArrayNoRef(aData);
632	return E_NOTIMPL;
633	}
634
635	//
636	// Internal public methods
637	//
638
639	/* This method runs on the main SDL thread. */
640	void VBoxSDLFB::notifyChange(ULONG aScreenId)
641	{
642	/* Disable screen updates. */
643	RTCritSectEnter(&mUpdateLock);
644
645	if (!mfUpdateImage && mpPendingSourceBitmap.isNull())
646	{
647	/* Do nothing. Change event already processed. */
648	RTCritSectLeave(&mUpdateLock);
649	return;
650	}
651
652	/* Release the current bitmap and keep the pending one. */
653	mpSourceBitmap = mpPendingSourceBitmap;
654	mpPendingSourceBitmap.setNull();
655
656	RTCritSectLeave(&mUpdateLock);
657
658	if (mpSourceBitmap.isNull())
659	{
660	mPtrVRAM = NULL;
661	mBitsPerPixel = 32;
662	mBytesPerLine = mGuestXRes * 4;
663	}
664	else
665	{
666	BYTE *pAddress = NULL;
667	ULONG ulWidth = 0;
668	ULONG ulHeight = 0;
669	ULONG ulBitsPerPixel = 0;
670	ULONG ulBytesPerLine = 0;
671	BitmapFormat_T bitmapFormat = BitmapFormat_Opaque;
672
673	mpSourceBitmap->QueryBitmapInfo(&pAddress,
674	&ulWidth,
675	&ulHeight,
676	&ulBitsPerPixel,
677	&ulBytesPerLine,
678	&bitmapFormat);
679
680	if ( mGuestXRes == ulWidth
681	&& mGuestYRes == ulHeight
682	&& mBitsPerPixel == ulBitsPerPixel
683	&& mBytesPerLine == ulBytesPerLine
684	&& mPtrVRAM == pAddress
685	)
686	{
687	mfSameSizeRequested = true;
688	}
689	else
690	{
691	mfSameSizeRequested = false;
692	}
693
694	mGuestXRes = ulWidth;
695	mGuestYRes = ulHeight;
696	mPtrVRAM = pAddress;
697	mBitsPerPixel = ulBitsPerPixel;
698	mBytesPerLine = ulBytesPerLine;
699	}
700
701	resizeGuest();
702
703	gpDisplay->InvalidateAndUpdateScreen(aScreenId);
704	}
705
706	/**
707	* Method that does the actual resize of the guest framebuffer and
708	* then changes the SDL framebuffer setup.
709	*/
710	void VBoxSDLFB::resizeGuest()
711	{
712	LogFlowFunc (("mGuestXRes: %d, mGuestYRes: %d\n", mGuestXRes, mGuestYRes));
713	AssertMsg(gSdlNativeThread == RTThreadNativeSelf(),
714	("Wrong thread! SDL is not threadsafe!\n"));
715
716	RTCritSectEnter(&mUpdateLock);
717
718	const uint32_t Rmask = 0x00FF0000, Gmask = 0x0000FF00, Bmask = 0x000000FF, Amask = 0;
719
720	/* first free the current surface */
721	if (mSurfVRAM)
722	{
723	SDL_FreeSurface(mSurfVRAM);
724	mSurfVRAM = NULL;
725	}
726
727	if (mPtrVRAM)
728	{
729	/* Create a source surface from the source bitmap. */
730	mSurfVRAM = SDL_CreateRGBSurfaceFrom(mPtrVRAM, mGuestXRes, mGuestYRes, mBitsPerPixel,
731	mBytesPerLine, Rmask, Gmask, Bmask, Amask);
732	LogFlow(("VBoxSDL:: using the source bitmap\n"));
733	}
734	else
735	{
736	mSurfVRAM = SDL_CreateRGBSurface(SDL_SWSURFACE, mGuestXRes, mGuestYRes, mBitsPerPixel,
737	Rmask, Gmask, Bmask, Amask);
738	LogFlow(("VBoxSDL:: using SDL_SWSURFACE\n"));
739	}
740	LogFlow(("VBoxSDL:: created VRAM surface %p\n", mSurfVRAM));
741
742	if (mfSameSizeRequested)
743	{
744	mfSameSizeRequested = false;
745	LogFlow(("VBoxSDL:: the same resolution requested, skipping the resize.\n"));
746	}
747	else
748	{
749	/* now adjust the SDL resolution */
750	resizeSDL();
751	}
752
753	/* Enable screen updates. */
754	mfUpdates = true;
755
756	RTCritSectLeave(&mUpdateLock);
757
758	repaint();
759	}
760
761	/**
762	* Sets SDL video mode. This is independent from guest video
763	* mode changes.
764	*
765	* @remarks Must be called from the SDL thread!
766	*/
767	void VBoxSDLFB::resizeSDL(void)
768	{
769	LogFlow(("VBoxSDL:resizeSDL\n"));
770
771	/*
772	* We request a hardware surface from SDL so that we can perform
773	* accelerated system memory to VRAM blits. The way video handling
774	* works it that on the one hand we have the screen surface from SDL
775	* and on the other hand we have a software surface that we create
776	* using guest VRAM memory for linear modes and using SDL allocated
777	* system memory for text and non linear graphics modes. We never
778	* directly write to the screen surface but always use SDL blitting
779	* functions to blit from our system memory surface to the VRAM.
780	* Therefore, SDL can take advantage of hardware acceleration.
781	*/
782	int sdlFlags = SDL_HWSURFACE \| SDL_ASYNCBLIT \| SDL_HWACCEL;
783	#ifndef RT_OS_OS2 /* doesn't seem to work for some reason... */
784	if (mfResizable)
785	sdlFlags \|= SDL_RESIZABLE;
786	#endif
787	if (mfFullscreen)
788	sdlFlags \|= SDL_FULLSCREEN;
789
790	/*
791	* Now we have to check whether there are video mode restrictions
792	*/
793	SDL_Rect **modes;
794	/* Get available fullscreen/hardware modes */
795	modes = SDL_ListModes(NULL, sdlFlags);
796	Assert(modes != NULL);
797	/* -1 means that any mode is possible (usually non fullscreen) */
798	if (modes != (SDL_Rect **)-1)
799	{
800	/*
801	* according to the SDL documentation, the API guarantees that
802	* the modes are sorted from larger to smaller, so we just
803	* take the first entry as the maximum.
804	*/
805	mMaxScreenWidth = modes[0]->w;
806	mMaxScreenHeight = modes[0]->h;
807	}
808	else
809	{
810	/* no restriction */
811	mMaxScreenWidth = ~(uint32_t)0;
812	mMaxScreenHeight = ~(uint32_t)0;
813	}
814
815	uint32_t newWidth;
816	uint32_t newHeight;
817
818	/* reset the centering offsets */
819	mCenterXOffset = 0;
820	mCenterYOffset = 0;
821
822	/* we either have a fixed SDL resolution or we take the guest's */
823	if (mFixedSDLWidth != ~(uint32_t)0)
824	{
825	newWidth = mFixedSDLWidth;
826	newHeight = mFixedSDLHeight;
827	}
828	else
829	{
830	newWidth = RT_MIN(mGuestXRes, mMaxScreenWidth);
831	#ifdef VBOX_SECURELABEL
832	newHeight = RT_MIN(mGuestYRes + mLabelHeight, mMaxScreenHeight);
833	#else
834	newHeight = RT_MIN(mGuestYRes, mMaxScreenHeight);
835	#endif
836	}
837
838	/* we don't have any extra space by default */
839	mTopOffset = 0;
840
841	#if defined(VBOX_WITH_SDL13)
842	int sdlWindowFlags = SDL_WINDOW_SHOWN;
843	if (mfResizable)
844	sdlWindowFlags \|= SDL_WINDOW_RESIZABLE;
845	if (!mWindow)
846	{
847	SDL_DisplayMode desktop_mode;
848	int x = 40 + mScreenId * 20;
849	int y = 40 + mScreenId * 15;
850
851	SDL_GetDesktopDisplayMode(&desktop_mode);
852	/* create new window */
853
854	char szTitle[64];
855	RTStrPrintf(szTitle, sizeof(szTitle), "SDL window %d", mScreenId);
856	mWindow = SDL_CreateWindow(szTitle, x, y,
857	newWidth, newHeight, sdlWindowFlags);
858	if (SDL_CreateRenderer(mWindow, -1,
859	SDL_RENDERER_SINGLEBUFFER \| SDL_RENDERER_PRESENTDISCARD) < 0)
860	AssertReleaseFailed();
861
862	SDL_GetRendererInfo(&mRenderInfo);
863
864	mTexture = SDL_CreateTexture(desktop_mode.format,
865	SDL_TEXTUREACCESS_STREAMING, newWidth, newHeight);
866	if (!mTexture)
867	AssertReleaseFailed();
868	}
869	else
870	{
871	int w, h;
872	uint32_t format;
873	int access;
874
875	/* resize current window */
876	SDL_GetWindowSize(mWindow, &w, &h);
877
878	if (w != (int)newWidth \|\| h != (int)newHeight)
879	SDL_SetWindowSize(mWindow, newWidth, newHeight);
880
881	SDL_QueryTexture(mTexture, &format, &access, &w, &h);
882	SDL_SelectRenderer(mWindow);
883	SDL_DestroyTexture(mTexture);
884	mTexture = SDL_CreateTexture(format, access, newWidth, newHeight);
885	if (!mTexture)
886	AssertReleaseFailed();
887	}
888
889	void *pixels;
890	int pitch;
891	int w, h, bpp;
892	uint32_t Rmask, Gmask, Bmask, Amask;
893	uint32_t format;
894
895	if (SDL_QueryTexture(mTexture, &format, NULL, &w, &h) < 0)
896	AssertReleaseFailed();
897
898	if (!SDL_PixelFormatEnumToMasks(format, &bpp, &Rmask, &Gmask, &Bmask, &Amask))
899	AssertReleaseFailed();
900
901	if (SDL_QueryTexturePixels(mTexture, &pixels, &pitch) == 0)
902	{
903	mScreen = SDL_CreateRGBSurfaceFrom(pixels, w, h, bpp, pitch,
904	Rmask, Gmask, Bmask, Amask);
905	}
906	else
907	{
908	mScreen = SDL_CreateRGBSurface(0, w, h, bpp, Rmask, Gmask, Bmask, Amask);
909	AssertReleaseFailed();
910	}
911
912	SDL_SetClipRect(mScreen, NULL);
913
914	#else
915	/*
916	* Now set the screen resolution and get the surface pointer
917	* @todo BPP is not supported!
918	*/
919	mScreen = SDL_SetVideoMode(newWidth, newHeight, 0, sdlFlags);
920
921	/*
922	* Set the Window ID. Currently used for OpenGL accelerated guests.
923	*/
924	# if defined (RT_OS_WINDOWS)
925	SDL_SysWMinfo info;
926	SDL_VERSION(&info.version);
927	if (SDL_GetWMInfo(&info))
928	mWinId = (intptr_t) info.window;
929	# elif defined (RT_OS_LINUX)
930	SDL_SysWMinfo info;
931	SDL_VERSION(&info.version);
932	if (SDL_GetWMInfo(&info))
933	mWinId = (LONG64) info.info.x11.wmwindow;
934	# elif defined(RT_OS_DARWIN)
935	mWinId = (intptr_t)VBoxSDLGetDarwinWindowId();
936	# else
937	/* XXX ignore this for other architectures */
938	# endif
939	#endif
940	#ifdef VBOX_SECURELABEL
941	/*
942	* For non fixed SDL resolution, the above call tried to add the label height
943	* to the guest height. If it worked, we have an offset. If it didn't the below
944	* code will try again with the original guest resolution.
945	*/
946	if (mFixedSDLWidth == ~(uint32_t)0)
947	{
948	/* if it didn't work, then we have to go for the original resolution and paint over the guest */
949	if (!mScreen)
950	{
951	mScreen = SDL_SetVideoMode(newWidth, newHeight - mLabelHeight, 0, sdlFlags);
952	}
953	else
954	{
955	/* we now have some extra space */
956	mTopOffset = mLabelHeight;
957	}
958	}
959	else
960	{
961	/* in case the guest resolution is small enough, we do have a top offset */
962	if (mFixedSDLHeight - mGuestYRes >= mLabelHeight)
963	mTopOffset = mLabelHeight;
964
965	/* we also might have to center the guest picture */
966	if (mFixedSDLWidth > mGuestXRes)
967	mCenterXOffset = (mFixedSDLWidth - mGuestXRes) / 2;
968	if (mFixedSDLHeight > mGuestYRes + mLabelHeight)
969	mCenterYOffset = (mFixedSDLHeight - (mGuestYRes + mLabelHeight)) / 2;
970	}
971	#endif
972	AssertMsg(mScreen, ("Error: SDL_SetVideoMode failed!\n"));
973	if (mScreen)
974	{
975	#ifdef VBOX_WIN32_UI
976	/* inform the UI code */
977	resizeUI(mScreen->w, mScreen->h);
978	#endif
979	if (mfShowSDLConfig)
980	RTPrintf("Resized to %dx%d, screen surface type: %s\n", mScreen->w, mScreen->h,
981	((mScreen->flags & SDL_HWSURFACE) == 0) ? "software" : "hardware");
982	}
983	}
984
985	/**
986	* Update specified framebuffer area. The coordinates can either be
987	* relative to the guest framebuffer or relative to the screen.
988	*
989	* @remarks Must be called from the SDL thread on Linux!
990	* @param x left column
991	* @param y top row
992	* @param w width in pixels
993	* @param h height in pixels
994	* @param fGuestRelative flag whether the above values are guest relative or screen relative;
995	*/
996	void VBoxSDLFB::update(int x, int y, int w, int h, bool fGuestRelative)
997	{
998	#ifdef VBOXSDL_WITH_X11
999	AssertMsg(gSdlNativeThread == RTThreadNativeSelf(), ("Wrong thread! SDL is not threadsafe!\n"));
1000	#endif
1001	RTCritSectEnter(&mUpdateLock);
1002	Log(("Updates %d, %d,%d %dx%d\n", mfUpdates, x, y, w, h));
1003	if (!mfUpdates)
1004	{
1005	RTCritSectLeave(&mUpdateLock);
1006	return;
1007	}
1008
1009	Assert(mScreen);
1010	Assert(mSurfVRAM);
1011	if (!mScreen \|\| !mSurfVRAM)
1012	{
1013	RTCritSectLeave(&mUpdateLock);
1014	return;
1015	}
1016
1017	/* the source and destination rectangles */
1018	SDL_Rect srcRect;
1019	SDL_Rect dstRect;
1020
1021	/* this is how many pixels we have to cut off from the height for this specific blit */
1022	int yCutoffGuest = 0;
1023
1024	#ifdef VBOX_SECURELABEL
1025	bool fPaintLabel = false;
1026	/* if we have a label and no space for it, we have to cut off a bit */
1027	if (mLabelHeight && !mTopOffset)
1028	{
1029	if (y < (int)mLabelHeight)
1030	yCutoffGuest = mLabelHeight - y;
1031	}
1032	#endif
1033
1034	/**
1035	* If we get a SDL window relative update, we
1036	* just perform a full screen update to keep things simple.
1037	*
1038	* @todo improve
1039	*/
1040	if (!fGuestRelative)
1041	{
1042	#ifdef VBOX_SECURELABEL
1043	/* repaint the label if necessary */
1044	if (y < (int)mLabelHeight)
1045	fPaintLabel = true;
1046	#endif
1047	x = 0;
1048	w = mGuestXRes;
1049	y = 0;
1050	h = mGuestYRes;
1051	}
1052
1053	srcRect.x = x;
1054	srcRect.y = y + yCutoffGuest;
1055	srcRect.w = w;
1056	srcRect.h = RT_MAX(0, h - yCutoffGuest);
1057
1058	/*
1059	* Destination rectangle is just offset by the label height.
1060	* There are two cases though: label height is added to the
1061	* guest resolution (mTopOffset == mLabelHeight; yCutoffGuest == 0)
1062	* or the label cuts off a portion of the guest screen (mTopOffset == 0;
1063	* yCutoffGuest >= 0)
1064	*/
1065	dstRect.x = x + mCenterXOffset;
1066	#ifdef VBOX_SECURELABEL
1067	dstRect.y = RT_MAX(mLabelHeight, y + yCutoffGuest + mTopOffset) + mCenterYOffset;
1068	#else
1069	dstRect.y = y + yCutoffGuest + mTopOffset + mCenterYOffset;
1070	#endif
1071	dstRect.w = w;
1072	dstRect.h = RT_MAX(0, h - yCutoffGuest);
1073
1074	/*
1075	* Now we just blit
1076	*/
1077	SDL_BlitSurface(mSurfVRAM, &srcRect, mScreen, &dstRect);
1078	/* hardware surfaces don't need update notifications */
1079	#if defined(VBOX_WITH_SDL13)
1080	AssertRelease(mScreen->flags & SDL_PREALLOC);
1081	SDL_SelectRenderer(mWindow);
1082	SDL_DirtyTexture(mTexture, 1, &dstRect);
1083	AssertRelease(mRenderInfo.flags & SDL_RENDERER_PRESENTCOPY);
1084	SDL_RenderCopy(mTexture, &dstRect, &dstRect);
1085	SDL_RenderPresent();
1086	#else
1087	if ((mScreen->flags & SDL_HWSURFACE) == 0)
1088	SDL_UpdateRect(mScreen, dstRect.x, dstRect.y, dstRect.w, dstRect.h);
1089	#endif
1090
1091	#ifdef VBOX_SECURELABEL
1092	if (fPaintLabel)
1093	paintSecureLabel(0, 0, 0, 0, false);
1094	#endif
1095	RTCritSectLeave(&mUpdateLock);
1096	}
1097
1098	/**
1099	* Repaint the whole framebuffer
1100	*
1101	* @remarks Must be called from the SDL thread!
1102	*/
1103	void VBoxSDLFB::repaint()
1104	{
1105	AssertMsg(gSdlNativeThread == RTThreadNativeSelf(), ("Wrong thread! SDL is not threadsafe!\n"));
1106	LogFlow(("VBoxSDLFB::repaint\n"));
1107	update(0, 0, mScreen->w, mScreen->h, false /* fGuestRelative */);
1108	}
1109
1110	/**
1111	* Toggle fullscreen mode
1112	*
1113	* @remarks Must be called from the SDL thread!
1114	*/
1115	void VBoxSDLFB::setFullscreen(bool fFullscreen)
1116	{
1117	AssertMsg(gSdlNativeThread == RTThreadNativeSelf(), ("Wrong thread! SDL is not threadsafe!\n"));
1118	LogFlow(("VBoxSDLFB::SetFullscreen: fullscreen: %d\n", fFullscreen));
1119	mfFullscreen = fFullscreen;
1120	/* only change the SDL resolution, do not touch the guest framebuffer */
1121	resizeSDL();
1122	repaint();
1123	}
1124
1125	/**
1126	* Return the geometry of the host. This isn't very well tested but it seems
1127	* to work at least on Linux hosts.
1128	*/
1129	void VBoxSDLFB::getFullscreenGeometry(uint32_t width, uint32_t height)
1130	{
1131	SDL_Rect **modes;
1132
1133	/* Get available fullscreen/hardware modes */
1134	modes = SDL_ListModes(NULL, SDL_FULLSCREEN);
1135	Assert(modes != NULL);
1136	/* -1 means that any mode is possible (usually non fullscreen) */
1137	if (modes != (SDL_Rect **)-1)
1138	{
1139	/*
1140	* According to the SDL documentation, the API guarantees that the modes
1141	* are sorted from larger to smaller, so we just take the first entry as
1142	* the maximum.
1143	*
1144	* XXX Crude Xinerama hack :-/
1145	*/
1146	if ( modes[0]->w > (16*modes[0]->h/9)
1147	&& modes[1]
1148	&& modes[1]->h == modes[0]->h)
1149	{
1150	*width = modes[1]->w;
1151	*height = modes[1]->h;
1152	}
1153	else
1154	{
1155	*width = modes[0]->w;
1156	*height = modes[0]->w;
1157	}
1158	}
1159	}
1160
1161	#ifdef VBOX_SECURELABEL
1162
1163	/**
1164	* Setup the secure labeling parameters
1165	*
1166	* @returns VBox status code
1167	* @param height height of the secure label area in pixels
1168	* @param font file path fo the TrueType font file
1169	* @param pointsize font size in points
1170	*/
1171	int VBoxSDLFB::initSecureLabel(uint32_t height, char *font, uint32_t pointsize, uint32_t labeloffs)
1172	{
1173	LogFlow(("VBoxSDLFB:initSecureLabel: new offset: %d pixels, new font: %s, new pointsize: %d\n",
1174	height, font, pointsize));
1175	mLabelHeight = height;
1176	mLabelOffs = labeloffs;
1177	Assert(font);
1178	pTTF_Init();
1179	mLabelFont = pTTF_OpenFont(font, pointsize);
1180	if (!mLabelFont)
1181	{
1182	AssertMsgFailed(("Failed to open TTF font file %s\n", font));
1183	return VERR_OPEN_FAILED;
1184	}
1185	mSecureLabelColorFG = 0x0000FF00;
1186	mSecureLabelColorBG = 0x00FFFF00;
1187	repaint();
1188	return VINF_SUCCESS;
1189	}
1190
1191	/**
1192	* Set the secure label text and repaint the label
1193	*
1194	* @param text UTF-8 string of new label
1195	* @remarks must be called from the SDL thread!
1196	*/
1197	void VBoxSDLFB::setSecureLabelText(const char *text)
1198	{
1199	mSecureLabelText = text;
1200	paintSecureLabel(0, 0, 0, 0, true);
1201	}
1202
1203	/**
1204	* Sets the secure label background color.
1205	*
1206	* @param colorFG encoded RGB value for text
1207	* @param colorBG encored RGB value for background
1208	* @remarks must be called from the SDL thread!
1209	*/
1210	void VBoxSDLFB::setSecureLabelColor(uint32_t colorFG, uint32_t colorBG)
1211	{
1212	mSecureLabelColorFG = colorFG;
1213	mSecureLabelColorBG = colorBG;
1214	paintSecureLabel(0, 0, 0, 0, true);
1215	}
1216
1217	/**
1218	* Paint the secure label if required
1219	*
1220	* @param fForce Force the repaint
1221	* @remarks must be called from the SDL thread!
1222	*/
1223	void VBoxSDLFB::paintSecureLabel(int x, int y, int w, int h, bool fForce)
1224	{
1225	RT_NOREF(x, w, h);
1226	# ifdef VBOXSDL_WITH_X11
1227	AssertMsg(gSdlNativeThread == RTThreadNativeSelf(), ("Wrong thread! SDL is not threadsafe!\n"));
1228	# endif
1229	/* only when the function is present */
1230	if (!pTTF_RenderUTF8_Solid)
1231	return;
1232	/* check if we can skip the paint */
1233	if (!fForce && ((uint32_t)y > mLabelHeight))
1234	{
1235	return;
1236	}
1237	/* first fill the background */
1238	SDL_Rect rect = {0, 0, (Uint16)mScreen->w, (Uint16)mLabelHeight};
1239	SDL_FillRect(mScreen, &rect, SDL_MapRGB(mScreen->format,
1240	(mSecureLabelColorBG & 0x00FF0000) >> 16, /* red */
1241	(mSecureLabelColorBG & 0x0000FF00) >> 8, /* green */
1242	mSecureLabelColorBG & 0x000000FF)); /* blue */
1243
1244	/* now the text */
1245	if ( mLabelFont != NULL
1246	&& !mSecureLabelText.isEmpty()
1247	)
1248	{
1249	SDL_Color clrFg = {(uint8_t)((mSecureLabelColorFG & 0x00FF0000) >> 16),
1250	(uint8_t)((mSecureLabelColorFG & 0x0000FF00) >> 8),
1251	(uint8_t)( mSecureLabelColorFG & 0x000000FF ), 0};
1252	SDL_Surface *sText = (pTTF_RenderUTF8_Blended != NULL)
1253	? pTTF_RenderUTF8_Blended(mLabelFont, mSecureLabelText.c_str(), clrFg)
1254	: pTTF_RenderUTF8_Solid(mLabelFont, mSecureLabelText.c_str(), clrFg);
1255	rect.x = 10;
1256	rect.y = mLabelOffs;
1257	SDL_BlitSurface(sText, NULL, mScreen, &rect);
1258	SDL_FreeSurface(sText);
1259	}
1260	/* make sure to update the screen */
1261	SDL_UpdateRect(mScreen, 0, 0, mScreen->w, mLabelHeight);
1262	}
1263
1264	#endif /* VBOX_SECURELABEL */
1265
1266	// IFramebufferOverlay
1267	///////////////////////////////////////////////////////////////////////////////////
1268
1269	/**
1270	* Constructor for the VBoxSDLFBOverlay class (IFramebufferOverlay implementation)
1271	*
1272	* @param x Initial X offset for the overlay
1273	* @param y Initial Y offset for the overlay
1274	* @param width Initial width for the overlay
1275	* @param height Initial height for the overlay
1276	* @param visible Whether the overlay is initially visible
1277	* @param alpha Initial alpha channel value for the overlay
1278	*/
1279	VBoxSDLFBOverlay::VBoxSDLFBOverlay(ULONG x, ULONG y, ULONG width, ULONG height,
1280	BOOL visible, VBoxSDLFB *aParent) :
1281	mOverlayX(x), mOverlayY(y), mOverlayWidth(width),
1282	mOverlayHeight(height), mOverlayVisible(visible),
1283	mParent(aParent)
1284	{}
1285
1286	/**
1287	* Destructor for the VBoxSDLFBOverlay class.
1288	*/
1289	VBoxSDLFBOverlay::~VBoxSDLFBOverlay()
1290	{
1291	SDL_FreeSurface(mBlendedBits);
1292	SDL_FreeSurface(mOverlayBits);
1293	}
1294
1295	/**
1296	* Perform any initialisation of the overlay that can potentially fail
1297	*
1298	* @returns S_OK on success or the reason for the failure
1299	*/
1300	HRESULT VBoxSDLFBOverlay::init()
1301	{
1302	mBlendedBits = SDL_CreateRGBSurface(SDL_ANYFORMAT, mOverlayWidth, mOverlayHeight, 32,
1303	0x00ff0000, 0x0000ff00, 0x000000ff, 0);
1304	AssertMsgReturn(mBlendedBits != NULL, ("Failed to create an SDL surface\n"),
1305	E_OUTOFMEMORY);
1306	mOverlayBits = SDL_CreateRGBSurface(SDL_SWSURFACE \| SDL_SRCALPHA, mOverlayWidth,
1307	mOverlayHeight, 32, 0x00ff0000, 0x0000ff00,
1308	0x000000ff, 0xff000000);
1309	AssertMsgReturn(mOverlayBits != NULL, ("Failed to create an SDL surface\n"),
1310	E_OUTOFMEMORY);
1311	return S_OK;
1312	}
1313
1314	/**
1315	* Returns the current overlay X offset in pixels.
1316	*
1317	* @returns COM status code
1318	* @param x Address of result buffer.
1319	*/
1320	STDMETHODIMP VBoxSDLFBOverlay::COMGETTER(X)(ULONG *x)
1321	{
1322	LogFlow(("VBoxSDLFBOverlay::GetX\n"));
1323	if (!x)
1324	return E_INVALIDARG;
1325	*x = mOverlayX;
1326	return S_OK;
1327	}
1328
1329	/**
1330	* Returns the current overlay height in pixels.
1331	*
1332	* @returns COM status code
1333	* @param height Address of result buffer.
1334	*/
1335	STDMETHODIMP VBoxSDLFBOverlay::COMGETTER(Y)(ULONG *y)
1336	{
1337	LogFlow(("VBoxSDLFBOverlay::GetY\n"));
1338	if (!y)
1339	return E_INVALIDARG;
1340	*y = mOverlayY;
1341	return S_OK;
1342	}
1343
1344	/**
1345	* Returns the current overlay width in pixels. In fact, this returns the line size.
1346	*
1347	* @returns COM status code
1348	* @param width Address of result buffer.
1349	*/
1350	STDMETHODIMP VBoxSDLFBOverlay::COMGETTER(Width)(ULONG *width)
1351	{
1352	LogFlow(("VBoxSDLFBOverlay::GetWidth\n"));
1353	if (!width)
1354	return E_INVALIDARG;
1355	*width = mOverlayBits->pitch;
1356	return S_OK;
1357	}
1358
1359	/**
1360	* Returns the current overlay line size in pixels.
1361	*
1362	* @returns COM status code
1363	* @param lineSize Address of result buffer.
1364	*/
1365	STDMETHODIMP VBoxSDLFBOverlay::COMGETTER(BytesPerLine)(ULONG *bytesPerLine)
1366	{
1367	LogFlow(("VBoxSDLFBOverlay::GetBytesPerLine\n"));
1368	if (!bytesPerLine)
1369	return E_INVALIDARG;
1370	*bytesPerLine = mOverlayBits->pitch;
1371	return S_OK;
1372	}
1373
1374	/**
1375	* Returns the current overlay height in pixels.
1376	*
1377	* @returns COM status code
1378	* @param height Address of result buffer.
1379	*/
1380	STDMETHODIMP VBoxSDLFBOverlay::COMGETTER(Height)(ULONG *height)
1381	{
1382	LogFlow(("VBoxSDLFBOverlay::GetHeight\n"));
1383	if (!height)
1384	return E_INVALIDARG;
1385	*height = mOverlayHeight;
1386	return S_OK;
1387	}
1388
1389	/**
1390	* Returns whether the overlay is currently visible.
1391	*
1392	* @returns COM status code
1393	* @param visible Address of result buffer.
1394	*/
1395	STDMETHODIMP VBoxSDLFBOverlay::COMGETTER(Visible)(BOOL *visible)
1396	{
1397	LogFlow(("VBoxSDLFBOverlay::GetVisible\n"));
1398	if (!visible)
1399	return E_INVALIDARG;
1400	*visible = mOverlayVisible;
1401	return S_OK;
1402	}
1403
1404	/**
1405	* Sets whether the overlay is currently visible.
1406	*
1407	* @returns COM status code
1408	* @param visible New value.
1409	*/
1410	STDMETHODIMP VBoxSDLFBOverlay::COMSETTER(Visible)(BOOL visible)
1411	{
1412	LogFlow(("VBoxSDLFBOverlay::SetVisible\n"));
1413	mOverlayVisible = visible;
1414	return S_OK;
1415	}
1416
1417	/**
1418	* Returns the value of the global alpha channel.
1419	*
1420	* @returns COM status code
1421	* @param alpha Address of result buffer.
1422	*/
1423	STDMETHODIMP VBoxSDLFBOverlay::COMGETTER(Alpha)(ULONG *alpha)
1424	{
1425	RT_NOREF(alpha);
1426	LogFlow(("VBoxSDLFBOverlay::GetAlpha\n"));
1427	return E_NOTIMPL;
1428	}
1429
1430	/**
1431	* Sets whether the overlay is currently visible.
1432	*
1433	* @returns COM status code
1434	* @param alpha new value.
1435	*/
1436	STDMETHODIMP VBoxSDLFBOverlay::COMSETTER(Alpha)(ULONG alpha)
1437	{
1438	RT_NOREF(alpha);
1439	LogFlow(("VBoxSDLFBOverlay::SetAlpha\n"));
1440	return E_NOTIMPL;
1441	}
1442
1443	/**
1444	* Returns the current colour depth. In fact, this is always 32bpp.
1445	*
1446	* @returns COM status code
1447	* @param bitsPerPixel Address of result buffer.
1448	*/
1449	STDMETHODIMP VBoxSDLFBOverlay::COMGETTER(BitsPerPixel)(ULONG *bitsPerPixel)
1450	{
1451	LogFlow(("VBoxSDLFBOverlay::GetBitsPerPixel\n"));
1452	if (!bitsPerPixel)
1453	return E_INVALIDARG;
1454	*bitsPerPixel = 32;
1455	return S_OK;
1456	}
1457
1458	/**
1459	* Returns the current pixel format. In fact, this is always RGB.
1460	*
1461	* @returns COM status code
1462	* @param pixelFormat Address of result buffer.
1463	*/
1464	STDMETHODIMP VBoxSDLFBOverlay::COMGETTER(PixelFormat)(ULONG *pixelFormat)
1465	{
1466	LogFlow(("VBoxSDLFBOverlay::GetPixelFormat\n"));
1467	if (!pixelFormat)
1468	return E_INVALIDARG;
1469	*pixelFormat = BitmapFormat_BGR;
1470	return S_OK;
1471	}
1472
1473	/**
1474	* Returns whether the guest VRAM is used directly. In fact, this is always FALSE.
1475	*
1476	* @returns COM status code
1477	* @param usesGuestVRAM Address of result buffer.
1478	*/
1479	STDMETHODIMP VBoxSDLFBOverlay::COMGETTER(UsesGuestVRAM)(BOOL *usesGuestVRAM)
1480	{
1481	LogFlow(("VBoxSDLFBOverlay::GetUsesGuestVRAM\n"));
1482	if (!usesGuestVRAM)
1483	return E_INVALIDARG;
1484	*usesGuestVRAM = FALSE;
1485	return S_OK;
1486	}
1487
1488	/**
1489	* Returns the height reduction. In fact, this is always 0.
1490	*
1491	* @returns COM status code
1492	* @param heightReduction Address of result buffer.
1493	*/
1494	STDMETHODIMP VBoxSDLFBOverlay::COMGETTER(HeightReduction)(ULONG *heightReduction)
1495	{
1496	LogFlow(("VBoxSDLFBOverlay::GetHeightReduction\n"));
1497	if (!heightReduction)
1498	return E_INVALIDARG;
1499	*heightReduction = 0;
1500	return S_OK;
1501	}
1502
1503	/**
1504	* Returns the overlay for this framebuffer. Obviously, we return NULL here.
1505	*
1506	* @returns COM status code
1507	* @param overlay Address of result buffer.
1508	*/
1509	STDMETHODIMP VBoxSDLFBOverlay::COMGETTER(Overlay)(IFramebufferOverlay **aOverlay)
1510	{
1511	LogFlow(("VBoxSDLFBOverlay::GetOverlay\n"));
1512	if (!aOverlay)
1513	return E_INVALIDARG;
1514	*aOverlay = 0;
1515	return S_OK;
1516	}
1517
1518	/**
1519	* Returns associated window handle. We return NULL here.
1520	*
1521	* @returns COM status code
1522	* @param winId Address of result buffer.
1523	*/
1524	STDMETHODIMP VBoxSDLFBOverlay::COMGETTER(WinId)(LONG64 *winId)
1525	{
1526	LogFlow(("VBoxSDLFBOverlay::GetWinId\n"));
1527	if (!winId)
1528	return E_INVALIDARG;
1529	*winId = 0;
1530	return S_OK;
1531	}
1532
1533
1534	/**
1535	* Lock the overlay. This should not be used - lock the parent IFramebuffer instead.
1536	*
1537	* @returns COM status code
1538	*/
1539	STDMETHODIMP VBoxSDLFBOverlay::Lock()
1540	{
1541	LogFlow(("VBoxSDLFBOverlay::Lock\n"));
1542	AssertMsgFailed(("You should not attempt to lock an IFramebufferOverlay object -\n"
1543	"lock the parent IFramebuffer object instead.\n"));
1544	return E_NOTIMPL;
1545	}
1546
1547	/**
1548	* Unlock the overlay.
1549	*
1550	* @returns COM status code
1551	*/
1552	STDMETHODIMP VBoxSDLFBOverlay::Unlock()
1553	{
1554	LogFlow(("VBoxSDLFBOverlay::Unlock\n"));
1555	AssertMsgFailed(("You should not attempt to lock an IFramebufferOverlay object -\n"
1556	"lock the parent IFramebuffer object instead.\n"));
1557	return E_NOTIMPL;
1558	}
1559
1560	/**
1561	* Change the X and Y co-ordinates of the overlay area.
1562	*
1563	* @returns COM status code
1564	* @param x New X co-ordinate.
1565	* @param y New Y co-ordinate.
1566	*/
1567	STDMETHODIMP VBoxSDLFBOverlay::Move(ULONG x, ULONG y)
1568	{
1569	mOverlayX = x;
1570	mOverlayY = y;
1571	return S_OK;
1572	}
1573
1574	/**
1575	* Notify the overlay that a section of the framebuffer has been redrawn.
1576	*
1577	* @returns COM status code
1578	* @param x X co-ordinate of upper left corner of modified area.
1579	* @param y Y co-ordinate of upper left corner of modified area.
1580	* @param w Width of modified area.
1581	* @param h Height of modified area.
1582	* @retval finished Set if the operation has completed.
1583	*
1584	* All we do here is to send a request to the parent to update the affected area,
1585	* translating between our co-ordinate system and the parent's. It would be have
1586	* been better to call the parent directly, but such is life. We leave bounds
1587	* checking to the parent.
1588	*/
1589	STDMETHODIMP VBoxSDLFBOverlay::NotifyUpdate(ULONG x, ULONG y,
1590	ULONG w, ULONG h)
1591	{
1592	return mParent->NotifyUpdate(x + mOverlayX, y + mOverlayY, w, h);
1593	}
1594
1595	/**
1596	* Change the dimensions of the overlay.
1597	*
1598	* @returns COM status code
1599	* @param pixelFormat Must be BitmapFormat_BGR.
1600	* @param vram Must be NULL.
1601	* @param lineSize Ignored.
1602	* @param w New overlay width.
1603	* @param h New overlay height.
1604	* @retval finished Set if the operation has completed.
1605	*/
1606	STDMETHODIMP VBoxSDLFBOverlay::RequestResize(ULONG aScreenId, ULONG pixelFormat, ULONG vram,
1607	ULONG bitsPerPixel, ULONG bytesPerLine,
1608	ULONG w, ULONG h, BOOL *finished)
1609	{
1610	RT_NOREF(aScreenId, bytesPerLine, finished);
1611	AssertReturn(pixelFormat == BitmapFormat_BGR, E_INVALIDARG);
1612	AssertReturn(vram == 0, E_INVALIDARG);
1613	AssertReturn(bitsPerPixel == 32, E_INVALIDARG);
1614	mOverlayWidth = w;
1615	mOverlayHeight = h;
1616	SDL_FreeSurface(mOverlayBits);
1617	mBlendedBits = SDL_CreateRGBSurface(SDL_ANYFORMAT, mOverlayWidth, mOverlayHeight, 32,
1618	0x00ff0000, 0x0000ff00, 0x000000ff, 0);
1619	AssertMsgReturn(mBlendedBits != NULL, ("Failed to create an SDL surface\n"),
1620	E_OUTOFMEMORY);
1621	mOverlayBits = SDL_CreateRGBSurface(SDL_SWSURFACE \| SDL_SRCALPHA, mOverlayWidth,
1622	mOverlayHeight, 32, 0x00ff0000, 0x0000ff00,
1623	0x000000ff, 0xff000000);
1624	AssertMsgReturn(mOverlayBits != NULL, ("Failed to create an SDL surface\n"),
1625	E_OUTOFMEMORY);
1626	return S_OK;
1627	}
1628
1629	/**
1630	* Returns whether we like the given video mode.
1631	*
1632	* @returns COM status code
1633	* @param width video mode width in pixels
1634	* @param height video mode height in pixels
1635	* @param bpp video mode bit depth in bits per pixel
1636	* @retval supported pointer to result variable
1637	*
1638	* Basically, we support anything with 32bpp.
1639	*/
1640	STDMETHODIMP VBoxSDLFBOverlay::VideoModeSupported(ULONG width, ULONG height, ULONG bpp, BOOL *supported)
1641	{
1642	RT_NOREF(width, height);
1643	if (!supported)
1644	return E_POINTER;
1645	if (bpp == 32)
1646	*supported = true;
1647	else
1648	*supported = false;
1649	return S_OK;
1650	}

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source: vbox/trunk/src/VBox/Frontends/VBoxSDL/Framebuffer.cpp@ 76553

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