e14743d1 |
1 | /* |
2 | SDL - Simple DirectMedia Layer |
3 | Copyright (C) 1997-2009 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 | |
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 | |