sdl_dx5video.c

MPEG-4编解码的实现(包括MPEG4视音频编解码)

static void DX5_VideoQuit(_THIS);

/* Hardware surface functions */
static int DX5_AllocHWSurface(_THIS, SDL_Surface *surface);
static int DX5_CheckHWBlit(_THIS, SDL_Surface *src, SDL_Surface *dst);
static int DX5_FillHWRect(_THIS, SDL_Surface *dst, SDL_Rect *dstrect, Uint32 color);
static int DX5_SetHWColorKey(_THIS, SDL_Surface *surface, Uint32 key);
static int DX5_SetHWAlpha(_THIS, SDL_Surface *surface, Uint8 alpha);
static int DX5_LockHWSurface(_THIS, SDL_Surface *surface);
static void DX5_UnlockHWSurface(_THIS, SDL_Surface *surface);
static int DX5_FlipHWSurface(_THIS, SDL_Surface *surface);
static void DX5_FreeHWSurface(_THIS, SDL_Surface *surface);

static int DX5_AllocDDSurface(_THIS, SDL_Surface *surface, 
				LPDIRECTDRAWSURFACE3 requested, Uint32 flag);

/* Windows message handling functions */
static void DX5_RealizePalette(_THIS);
static void DX5_PaletteChanged(_THIS, HWND window);
static void DX5_WinPAINT(_THIS, HDC hdc);

/* WinDIB driver functions for manipulating gamma ramps */
extern int DIB_SetGammaRamp(_THIS, Uint16 *ramp);
extern int DIB_GetGammaRamp(_THIS, Uint16 *ramp);
extern void DIB_QuitGamma(_THIS);

/* DX5 driver bootstrap functions */

static int DX5_Available(void)
{
	HINSTANCE DInputDLL;
	HINSTANCE DDrawDLL;
	int dinput_ok;
	int ddraw_ok;

	/* Version check DINPUT.DLL and DDRAW.DLL (Is DirectX okay?) */
	dinput_ok = 0;
	DInputDLL = LoadLibrary("DINPUT.DLL");
	if ( DInputDLL != NULL ) {
		dinput_ok = 1;
	  	FreeLibrary(DInputDLL);
	}
	ddraw_ok = 0;
	DDrawDLL = LoadLibrary("DDRAW.DLL");
	if ( DDrawDLL != NULL ) {
	  HRESULT (WINAPI *DDrawCreate)(GUID *,LPDIRECTDRAW *,IUnknown *);
	  LPDIRECTDRAW DDraw;

	  /* Try to create a valid DirectDraw object */
	  DDrawCreate = (void *)GetProcAddress(DDrawDLL, "DirectDrawCreate");
	  if ( (DDrawCreate != NULL)
			&& !FAILED(DDrawCreate(NULL, &DDraw, NULL)) ) {
	    if ( !FAILED(IDirectDraw_SetCooperativeLevel(DDraw,
							NULL, DDSCL_NORMAL)) ) {
	      DDSURFACEDESC desc;
	      LPDIRECTDRAWSURFACE  DDrawSurf;
	      LPDIRECTDRAWSURFACE3 DDrawSurf3;

	      /* Try to create a DirectDrawSurface3 object */
	      memset(&desc, 0, sizeof(desc));
	      desc.dwSize = sizeof(desc);
	      desc.dwFlags = DDSD_CAPS;
	      desc.ddsCaps.dwCaps = DDSCAPS_PRIMARYSURFACE|DDSCAPS_VIDEOMEMORY;
	      if ( !FAILED(IDirectDraw_CreateSurface(DDraw, &desc,
							&DDrawSurf, NULL)) ) {
	        if ( !FAILED(IDirectDrawSurface_QueryInterface(DDrawSurf,
			&IID_IDirectDrawSurface3, (LPVOID *)&DDrawSurf3)) ) {
	          /* Yay! */
		  ddraw_ok = 1;

	          /* Clean up.. */
	          IDirectDrawSurface3_Release(DDrawSurf3);
	        }
	        IDirectDrawSurface_Release(DDrawSurf);
	      }
	    }
	    IDirectDraw_Release(DDraw);
	  }
	  FreeLibrary(DDrawDLL);
	}
	return(dinput_ok && ddraw_ok);
}

/* Functions for loading the DirectX functions dynamically */
static HINSTANCE DDrawDLL = NULL;
static HINSTANCE DInputDLL = NULL;

static void DX5_Unload(void)
{
	if ( DDrawDLL != NULL ) {
		FreeLibrary(DDrawDLL);
		DDrawCreate = NULL;
		DDrawDLL = NULL;
	}
	if ( DInputDLL != NULL ) {
		FreeLibrary(DInputDLL);
		DInputCreate = NULL;
		DInputDLL = NULL;
	}
}
static int DX5_Load(void)
{
	int status;

	DX5_Unload();
	DDrawDLL = LoadLibrary("DDRAW.DLL");
	if ( DDrawDLL != NULL ) {
		DDrawCreate = (void *)GetProcAddress(DDrawDLL,
					"DirectDrawCreate");
	}
	DInputDLL = LoadLibrary("DINPUT.DLL");
	if ( DInputDLL != NULL ) {
		DInputCreate = (void *)GetProcAddress(DInputDLL,
					"DirectInputCreateA");
	}
	if ( DDrawDLL && DDrawCreate && DInputDLL && DInputCreate ) {
		status = 0;
	} else {
		DX5_Unload();
		status = -1;
	}
	return status;
}

static void DX5_DeleteDevice(SDL_VideoDevice *this)
{
	/* Free DirectDraw object */
	if ( ddraw2 != NULL ) {
		IDirectDraw2_Release(ddraw2);
	}
	DX5_Unload();
	if ( this ) {
		if ( this->hidden ) {
			free(this->hidden);
		}
		if ( this->gl_data ) {
			free(this->gl_data);
		}
		free(this);
	}
}

static SDL_VideoDevice *DX5_CreateDevice(int devindex)
{
	SDL_VideoDevice *device;

	/* Load DirectX */
	if ( DX5_Load() < 0 ) {
		return(NULL);
	}

	/* Initialize all variables that we clean on shutdown */
	device = (SDL_VideoDevice *)malloc(sizeof(SDL_VideoDevice));
	if ( device ) {
		memset(device, 0, (sizeof *device));
		device->hidden = (struct SDL_PrivateVideoData *)
				malloc((sizeof *device->hidden));
		device->gl_data = (struct SDL_PrivateGLData *)
				malloc((sizeof *device->gl_data));
	}
	if ( (device == NULL) || (device->hidden == NULL) ||
		                 (device->gl_data == NULL) ) {
		SDL_OutOfMemory();
		DX5_DeleteDevice(device);
		return(NULL);
	}
	memset(device->hidden, 0, (sizeof *device->hidden));
	memset(device->gl_data, 0, (sizeof *device->gl_data));

	/* Set the function pointers */
	device->VideoInit = DX5_VideoInit;
	device->ListModes = DX5_ListModes;
	device->SetVideoMode = DX5_SetVideoMode;
	device->UpdateMouse = WIN_UpdateMouse;
	device->CreateYUVOverlay = DX5_CreateYUVOverlay;
	device->SetColors = DX5_SetColors;
	device->UpdateRects = NULL;
	device->VideoQuit = DX5_VideoQuit;
	device->AllocHWSurface = DX5_AllocHWSurface;
	device->CheckHWBlit = DX5_CheckHWBlit;
	device->FillHWRect = DX5_FillHWRect;
	device->SetHWColorKey = DX5_SetHWColorKey;
	device->SetHWAlpha = DX5_SetHWAlpha;
	device->LockHWSurface = DX5_LockHWSurface;
	device->UnlockHWSurface = DX5_UnlockHWSurface;
	device->FlipHWSurface = DX5_FlipHWSurface;
	device->FreeHWSurface = DX5_FreeHWSurface;
	device->SetGammaRamp = DX5_SetGammaRamp;
	device->GetGammaRamp = DX5_GetGammaRamp;
#ifdef HAVE_OPENGL
        device->GL_LoadLibrary = WIN_GL_LoadLibrary;
        device->GL_GetProcAddress = WIN_GL_GetProcAddress;
        device->GL_GetAttribute = WIN_GL_GetAttribute;
        device->GL_MakeCurrent = WIN_GL_MakeCurrent;
        device->GL_SwapBuffers = WIN_GL_SwapBuffers;
#endif
	device->SetCaption = WIN_SetWMCaption;
	device->SetIcon = WIN_SetWMIcon;
	device->IconifyWindow = WIN_IconifyWindow;
	device->GrabInput = WIN_GrabInput;
	device->GetWMInfo = WIN_GetWMInfo;
	device->FreeWMCursor = WIN_FreeWMCursor;
	device->CreateWMCursor = WIN_CreateWMCursor;
	device->ShowWMCursor = WIN_ShowWMCursor;
	device->WarpWMCursor = WIN_WarpWMCursor;
	device->CheckMouseMode = WIN_CheckMouseMode;
	device->InitOSKeymap = DX5_InitOSKeymap;
	device->PumpEvents = DX5_PumpEvents;

	/* Set up the windows message handling functions */
	WIN_RealizePalette = DX5_RealizePalette;
	WIN_PaletteChanged = DX5_PaletteChanged;
	WIN_WinPAINT = DX5_WinPAINT;
	HandleMessage = DX5_HandleMessage;

	device->free = DX5_DeleteDevice;

	/* We're finally ready */
	return device;
}

VideoBootStrap DIRECTX_bootstrap = {
	"directx", "Win95/98/2000 DirectX",
	DX5_Available, DX5_CreateDevice
};

static HRESULT WINAPI EnumModes2(DDSURFACEDESC *desc, VOID *udata)
{
	SDL_VideoDevice *this = (SDL_VideoDevice *)udata;
	struct DX5EnumRect *enumrect;
#if defined(NONAMELESSUNION)
	int bpp = desc->ddpfPixelFormat.u1.dwRGBBitCount;
#else
	int bpp = desc->ddpfPixelFormat.dwRGBBitCount;
#endif

	switch (bpp)  {
		case 8:
		case 16:
		case 24:
		case 32:
			bpp /= 8; --bpp;
			++SDL_nummodes[bpp];
			enumrect = (struct DX5EnumRect*)malloc(sizeof(struct DX5EnumRect));
			if ( !enumrect ) {
				SDL_OutOfMemory();
				return(DDENUMRET_CANCEL);
			}
			enumrect->r.x = 0;
			enumrect->r.y = 0;
			enumrect->r.w = (Uint16)desc->dwWidth;
			enumrect->r.h = (Uint16)desc->dwHeight;
			enumrect->next = enumlists[bpp];
			enumlists[bpp] = enumrect;
			break;
	}


	return(DDENUMRET_OK);
}

void SetDDerror(const char *function, int code)
{
	static char *error;
	static char  errbuf[BUFSIZ];

	errbuf[0] = 0;
	switch (code) {
		case DDERR_GENERIC:
			error = "Undefined error!";
			break;
		case DDERR_EXCEPTION:
			error = "Exception encountered";
			break;
		case DDERR_INVALIDOBJECT:
			error = "Invalid object";
			break;
		case DDERR_INVALIDPARAMS:
			error = "Invalid parameters";
			break;
		case DDERR_NOTFOUND:
			error = "Object not found";
			break;
		case DDERR_INVALIDRECT:
			error = "Invalid rectangle";
			break;
		case DDERR_INVALIDCAPS:
			error = "Invalid caps member";
			break;
		case DDERR_INVALIDPIXELFORMAT:
			error = "Invalid pixel format";
			break;
		case DDERR_OUTOFMEMORY:
			error = "Out of memory";
			break;
		case DDERR_OUTOFVIDEOMEMORY:
			error = "Out of video memory";
			break;
		case DDERR_SURFACEBUSY:
			error = "Surface busy";
			break;
		case DDERR_SURFACELOST:
			error = "Surface was lost";
			break;
		case DDERR_WASSTILLDRAWING:
			error = "DirectDraw is still drawing";
			break;
		case DDERR_INVALIDSURFACETYPE:
			error = "Invalid surface type";
			break;
		case DDERR_NOEXCLUSIVEMODE:
			error = "Not in exclusive access mode";
			break;
		case DDERR_NOPALETTEATTACHED:
			error = "No palette attached";
			break;
		case DDERR_NOPALETTEHW:
			error = "No palette hardware";
			break;
		case DDERR_NOT8BITCOLOR:
			error = "Not 8-bit color";
			break;
		case DDERR_EXCLUSIVEMODEALREADYSET:
			error = "Exclusive mode was already set";
			break;
		case DDERR_HWNDALREADYSET:
			error = "Window handle already set";
			break;
		case DDERR_HWNDSUBCLASSED:
			error = "Window handle is subclassed";
			break;
		case DDERR_NOBLTHW:
			error = "No blit hardware";
			break;
		case DDERR_IMPLICITLYCREATED:
			error = "Surface was implicitly created";
			break;
		case DDERR_INCOMPATIBLEPRIMARY:
			error = "Incompatible primary surface";
			break;
		case DDERR_NOCOOPERATIVELEVELSET:
			error = "No cooperative level set";
			break;
		case DDERR_NODIRECTDRAWHW:
			error = "No DirectDraw hardware";
			break;
		case DDERR_NOEMULATION:
			error = "No emulation available";
			break;
		case DDERR_NOFLIPHW:
			error = "No flip hardware";
			break;
		case DDERR_NOTFLIPPABLE:
			error = "Surface not flippable";
			break;
		case DDERR_PRIMARYSURFACEALREADYEXISTS:
			error = "Primary surface already exists";
			break;
		case DDERR_UNSUPPORTEDMODE:
			error = "Unsupported mode";
			break;
		case DDERR_WRONGMODE:
			error = "Surface created in different mode";
			break;
		case DDERR_UNSUPPORTED:
			error = "Operation not supported";
			break;
		case E_NOINTERFACE:
			error = "Interface not present";
			break;
		default:
			sprintf(errbuf, "%s: Unknown DirectDraw error: 0x%x",
								function, code);
			break;
	}
	if ( ! errbuf[0] ) {
		sprintf(errbuf, "%s: %s", function, error);
	}
	SDL_SetError("%s", errbuf);
	return;
}


static int DX5_UpdateVideoInfo(_THIS)
{
	/* This needs to be DDCAPS_DX5 for the DirectDraw2 interface */
#if DIRECTDRAW_VERSION <= 0x300
#error Your version of DirectX must be greater than or equal to 5.0
#endif
#ifndef IDirectDrawGammaControl_SetGammaRamp
	/*if gamma is undefined then we really have directx <= 0x500*/
	DDCAPS DDCaps;
#else
	DDCAPS_DX5 DDCaps;
#endif
	HRESULT result;

	/* Fill in our hardware acceleration capabilities */
	memset(&DDCaps, 0, sizeof(DDCaps));
	DDCaps.dwSize = sizeof(DDCaps);
	result = IDirectDraw2_GetCaps(ddraw2, (DDCAPS *)&DDCaps, NULL);
	if ( result != DD_OK ) {
		SetDDerror("DirectDraw2::GetCaps", result);
		return(-1);
	}
	this->info.hw_available = 1;
	if ( (DDCaps.dwCaps & DDCAPS_BLT) == DDCAPS_BLT ) {
		this->info.blit_hw = 1;