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@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
CreateYUVSurface(_THIS,int width,int height,Uint32 format)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
PrintFOURCC(Uint32 code)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
DX5_CreateYUVOverlay(_THIS,int width,int height,Uint32 format,SDL_Surface * display)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
DX5_LockYUVOverlay(_THIS,SDL_Overlay * overlay)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
DX5_UnlockYUVOverlay(_THIS,SDL_Overlay * overlay)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
DX5_DisplayYUVOverlay(_THIS,SDL_Overlay * overlay,SDL_Rect * src,SDL_Rect * dst)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
DX5_FreeYUVOverlay(_THIS,SDL_Overlay * overlay)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