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      1 /*
      2     SDL - Simple DirectMedia Layer
      3     Copyright (C) 1997-2012 Sam Lantinga
      4 
      5     This library is free software; you can redistribute it and/or
      6     modify it under the terms of the GNU Lesser General Public
      7     License as published by the Free Software Foundation; either
      8     version 2.1 of the License, or (at your option) any later version.
      9 
     10     This library is distributed in the hope that it will be useful,
     11     but WITHOUT ANY WARRANTY; without even the implied warranty of
     12     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
     13     Lesser General Public License for more details.
     14 
     15     You should have received a copy of the GNU Lesser General Public
     16     License along with this library; if not, write to the Free Software
     17     Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
     18 
     19     Sam Lantinga
     20     slouken (at) libsdl.org
     21 */
     22 #include "SDL_config.h"
     23 
     24 /* This is the DirectDraw implementation of YUV video overlays */
     25 #include "directx.h"
     26 #include "SDL_video.h"
     27 #include "SDL_dx5yuv_c.h"
     28 #include "../SDL_yuvfuncs.h"
     29 
     30 //#define USE_DIRECTX_OVERLAY
     31 
     32 /* The functions used to manipulate software video overlays */
     33 static struct private_yuvhwfuncs dx5_yuvfuncs = {
     34 	DX5_LockYUVOverlay,
     35 	DX5_UnlockYUVOverlay,
     36 	DX5_DisplayYUVOverlay,
     37 	DX5_FreeYUVOverlay
     38 };
     39 
     40 struct private_yuvhwdata {
     41 	LPDIRECTDRAWSURFACE3 surface;
     42 
     43 	/* These are just so we don't have to allocate them separately */
     44 	Uint16 pitches[3];
     45 	Uint8 *planes[3];
     46 };
     47 
     48 
     49 static LPDIRECTDRAWSURFACE3 CreateYUVSurface(_THIS,
     50                                          int width, int height, Uint32 format)
     51 {
     52 	HRESULT result;
     53 	LPDIRECTDRAWSURFACE  dd_surface1;
     54 	LPDIRECTDRAWSURFACE3 dd_surface3;
     55 	DDSURFACEDESC ddsd;
     56 
     57 	/* Set up the surface description */
     58 	SDL_memset(&ddsd, 0, sizeof(ddsd));
     59 	ddsd.dwSize = sizeof(ddsd);
     60 	ddsd.dwFlags = (DDSD_WIDTH|DDSD_HEIGHT|DDSD_CAPS|DDSD_PIXELFORMAT);
     61 	ddsd.dwWidth = width;
     62 	ddsd.dwHeight= height;
     63 #ifdef USE_DIRECTX_OVERLAY
     64 	ddsd.ddsCaps.dwCaps = (DDSCAPS_OVERLAY|DDSCAPS_VIDEOMEMORY);
     65 #else
     66 	ddsd.ddsCaps.dwCaps = (DDSCAPS_OFFSCREENPLAIN|DDSCAPS_VIDEOMEMORY);
     67 #endif
     68 	ddsd.ddpfPixelFormat.dwSize = sizeof(ddsd.ddpfPixelFormat);
     69 	ddsd.ddpfPixelFormat.dwFlags = DDPF_FOURCC;
     70 	ddsd.ddpfPixelFormat.dwFourCC = format;
     71 
     72 	/* Create the DirectDraw video surface */
     73 	result = IDirectDraw2_CreateSurface(ddraw2, &ddsd, &dd_surface1, NULL);
     74 	if ( result != DD_OK ) {
     75 		SetDDerror("DirectDraw2::CreateSurface", result);
     76 		return(NULL);
     77 	}
     78 	result = IDirectDrawSurface_QueryInterface(dd_surface1,
     79 			&IID_IDirectDrawSurface3, (LPVOID *)&dd_surface3);
     80 	IDirectDrawSurface_Release(dd_surface1);
     81 	if ( result != DD_OK ) {
     82 		SetDDerror("DirectDrawSurface::QueryInterface", result);
     83 		return(NULL);
     84 	}
     85 
     86 	/* Make sure the surface format was set properly */
     87 	SDL_memset(&ddsd, 0, sizeof(ddsd));
     88 	ddsd.dwSize = sizeof(ddsd);
     89 	result = IDirectDrawSurface3_Lock(dd_surface3, NULL,
     90 					  &ddsd, DDLOCK_NOSYSLOCK, NULL);
     91 	if ( result != DD_OK ) {
     92 		SetDDerror("DirectDrawSurface3::Lock", result);
     93 		IDirectDrawSurface_Release(dd_surface3);
     94 		return(NULL);
     95 	}
     96 	IDirectDrawSurface3_Unlock(dd_surface3, NULL);
     97 
     98 	if ( !(ddsd.ddpfPixelFormat.dwFlags & DDPF_FOURCC) ||
     99 	      (ddsd.ddpfPixelFormat.dwFourCC != format) ) {
    100 		SDL_SetError("DDraw didn't use requested FourCC format");
    101 		IDirectDrawSurface_Release(dd_surface3);
    102 		return(NULL);
    103 	}
    104 
    105 	/* We're ready to go! */
    106 	return(dd_surface3);
    107 }
    108 
    109 #ifdef DEBUG_YUV
    110 static char *PrintFOURCC(Uint32 code)
    111 {
    112 	static char buf[5];
    113 
    114 	buf[3] = code >> 24;
    115 	buf[2] = (code >> 16) & 0xFF;
    116 	buf[1] = (code >> 8) & 0xFF;
    117 	buf[0] = (code & 0xFF);
    118 	return(buf);
    119 }
    120 #endif
    121 
    122 SDL_Overlay *DX5_CreateYUVOverlay(_THIS, int width, int height, Uint32 format, SDL_Surface *display)
    123 {
    124 	SDL_Overlay *overlay;
    125 	struct private_yuvhwdata *hwdata;
    126 
    127 #ifdef DEBUG_YUV
    128 	DWORD numcodes;
    129 	DWORD *codes;
    130 
    131 	printf("FOURCC format requested: 0x%x\n", PrintFOURCC(format));
    132 	IDirectDraw2_GetFourCCCodes(ddraw2, &numcodes, NULL);
    133 	if ( numcodes ) {
    134 		DWORD i;
    135 		codes = SDL_malloc(numcodes*sizeof(*codes));
    136 		if ( codes ) {
    137 			IDirectDraw2_GetFourCCCodes(ddraw2, &numcodes, codes);
    138 			for ( i=0; i<numcodes; ++i ) {
    139 				fprintf(stderr, "Code %d: 0x%x\n", i, PrintFOURCC(codes[i]));
    140 			}
    141 			SDL_free(codes);
    142 		}
    143 	} else {
    144 		fprintf(stderr, "No FOURCC codes supported\n");
    145 	}
    146 #endif
    147 
    148 	/* Create the overlay structure */
    149 	overlay = (SDL_Overlay *)SDL_malloc(sizeof *overlay);
    150 	if ( overlay == NULL ) {
    151 		SDL_OutOfMemory();
    152 		return(NULL);
    153 	}
    154 	SDL_memset(overlay, 0, (sizeof *overlay));
    155 
    156 	/* Fill in the basic members */
    157 	overlay->format = format;
    158 	overlay->w = width;
    159 	overlay->h = height;
    160 
    161 	/* Set up the YUV surface function structure */
    162 	overlay->hwfuncs = &dx5_yuvfuncs;
    163 
    164 	/* Create the pixel data and lookup tables */
    165 	hwdata = (struct private_yuvhwdata *)SDL_malloc(sizeof *hwdata);
    166 	overlay->hwdata = hwdata;
    167 	if ( hwdata == NULL ) {
    168 		SDL_OutOfMemory();
    169 		SDL_FreeYUVOverlay(overlay);
    170 		return(NULL);
    171 	}
    172 	hwdata->surface = CreateYUVSurface(this, width, height, format);
    173 	if ( hwdata->surface == NULL ) {
    174 		SDL_FreeYUVOverlay(overlay);
    175 		return(NULL);
    176 	}
    177 	overlay->hw_overlay = 1;
    178 
    179 	/* Set up the plane pointers */
    180 	overlay->pitches = hwdata->pitches;
    181 	overlay->pixels = hwdata->planes;
    182 	switch (format) {
    183 	    case SDL_YV12_OVERLAY:
    184 	    case SDL_IYUV_OVERLAY:
    185 		overlay->planes = 3;
    186 		break;
    187 	    default:
    188 		overlay->planes = 1;
    189 		break;
    190 	}
    191 
    192 	/* We're all done.. */
    193 	return(overlay);
    194 }
    195 
    196 int DX5_LockYUVOverlay(_THIS, SDL_Overlay *overlay)
    197 {
    198 	HRESULT result;
    199 	LPDIRECTDRAWSURFACE3 surface;
    200 	DDSURFACEDESC ddsd;
    201 
    202 	surface = overlay->hwdata->surface;
    203 	SDL_memset(&ddsd, 0, sizeof(ddsd));
    204 	ddsd.dwSize = sizeof(ddsd);
    205 	result = IDirectDrawSurface3_Lock(surface, NULL,
    206 					  &ddsd, DDLOCK_NOSYSLOCK, NULL);
    207 	if ( result == DDERR_SURFACELOST ) {
    208 		result = IDirectDrawSurface3_Restore(surface);
    209 		result = IDirectDrawSurface3_Lock(surface, NULL, &ddsd,
    210 					(DDLOCK_NOSYSLOCK|DDLOCK_WAIT), NULL);
    211 	}
    212 	if ( result != DD_OK ) {
    213 		SetDDerror("DirectDrawSurface3::Lock", result);
    214 		return(-1);
    215 	}
    216 
    217 	/* Find the pitch and offset values for the overlay */
    218 #if defined(NONAMELESSUNION)
    219 	overlay->pitches[0] = (Uint16)ddsd.u1.lPitch;
    220 #else
    221 	overlay->pitches[0] = (Uint16)ddsd.lPitch;
    222 #endif
    223 	overlay->pixels[0] = (Uint8 *)ddsd.lpSurface;
    224 	switch (overlay->format) {
    225 	    case SDL_YV12_OVERLAY:
    226 	    case SDL_IYUV_OVERLAY:
    227 		/* Add the two extra planes */
    228 		overlay->pitches[1] = overlay->pitches[0] / 2;
    229 		overlay->pitches[2] = overlay->pitches[0] / 2;
    230 	        overlay->pixels[1] = overlay->pixels[0] +
    231 		                     overlay->pitches[0] * overlay->h;
    232 	        overlay->pixels[2] = overlay->pixels[1] +
    233 		                     overlay->pitches[1] * overlay->h / 2;
    234 	        break;
    235 	    default:
    236 		/* Only one plane, no worries */
    237 		break;
    238 	}
    239 	return(0);
    240 }
    241 
    242 void DX5_UnlockYUVOverlay(_THIS, SDL_Overlay *overlay)
    243 {
    244 	LPDIRECTDRAWSURFACE3 surface;
    245 
    246 	surface = overlay->hwdata->surface;
    247 	IDirectDrawSurface3_Unlock(surface, NULL);
    248 }
    249 
    250 int DX5_DisplayYUVOverlay(_THIS, SDL_Overlay *overlay, SDL_Rect *src, SDL_Rect *dst)
    251 {
    252 	HRESULT result;
    253 	LPDIRECTDRAWSURFACE3 surface;
    254 	RECT srcrect, dstrect;
    255 
    256 	surface = overlay->hwdata->surface;
    257 	srcrect.top = src->y;
    258 	srcrect.bottom = srcrect.top+src->h;
    259 	srcrect.left = src->x;
    260 	srcrect.right = srcrect.left+src->w;
    261 	dstrect.top = SDL_bounds.top+dst->y;
    262 	dstrect.left = SDL_bounds.left+dst->x;
    263 	dstrect.bottom = dstrect.top+dst->h;
    264 	dstrect.right = dstrect.left+dst->w;
    265 #ifdef USE_DIRECTX_OVERLAY
    266 	result = IDirectDrawSurface3_UpdateOverlay(surface, &srcrect,
    267 				SDL_primary, &dstrect, DDOVER_SHOW, NULL);
    268 	if ( result != DD_OK ) {
    269 		SetDDerror("DirectDrawSurface3::UpdateOverlay", result);
    270 		return(-1);
    271 	}
    272 #else
    273 	result = IDirectDrawSurface3_Blt(SDL_primary, &dstrect, surface, &srcrect,
    274 							DDBLT_WAIT, NULL);
    275 	if ( result != DD_OK ) {
    276 		SetDDerror("DirectDrawSurface3::Blt", result);
    277 		return(-1);
    278 	}
    279 #endif
    280 	return(0);
    281 }
    282 
    283 void DX5_FreeYUVOverlay(_THIS, SDL_Overlay *overlay)
    284 {
    285 	struct private_yuvhwdata *hwdata;
    286 
    287 	hwdata = overlay->hwdata;
    288 	if ( hwdata ) {
    289 		if ( hwdata->surface ) {
    290 			IDirectDrawSurface_Release(hwdata->surface);
    291 		}
    292 		SDL_free(hwdata);
    293 		overlay->hwdata = NULL;
    294 	}
    295 }
    296 
    297