Mercurial > sdl-ios-xcode
annotate src/video/windx5/SDL_dx5yuv.c @ 3954:649fba69eccd SDL-1.2
Set supervisor as volatile as it is modified from an interrupt
| author | Patrice Mandin <patmandin@gmail.com> |
|---|---|
| date | Fri, 08 Jun 2007 21:44:40 +0000 |
| parents | 51038e80ae59 |
| children | 782fd950bd46 c121d94672cb 96ce26f24b01 |
| rev | line source |
|---|---|
| 0 | 1 /* |
| 2 SDL - Simple DirectMedia Layer | |
|
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3 Copyright (C) 1997-2006 Sam Lantinga |
| 0 | 4 |
| 5 This library is free software; you can redistribute it and/or | |
|
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6 modify it under the terms of the GNU Lesser General Public |
| 0 | 7 License as published by the Free Software Foundation; either |
|
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8 version 2.1 of the License, or (at your option) any later version. |
| 0 | 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 | |
|
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13 Lesser General Public License for more details. |
| 0 | 14 |
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15 You should have received a copy of the GNU Lesser General Public |
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16 License along with this library; if not, write to the Free Software |
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17 Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA |
| 0 | 18 |
| 19 Sam Lantinga | |
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20 slouken@libsdl.org |
| 0 | 21 */ |
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22 #include "SDL_config.h" |
| 0 | 23 |
| 24 /* This is the DirectDraw implementation of YUV video overlays */ | |
| 25 | |
| 26 #include "SDL_video.h" | |
| 27 #include "SDL_dx5yuv_c.h" | |
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28 #include "../SDL_yuvfuncs.h" |
| 0 | 29 |
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30 //#define USE_DIRECTX_OVERLAY |
| 0 | 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 */ | |
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58 SDL_memset(&ddsd, 0, sizeof(ddsd)); |
| 0 | 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 */ | |
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87 SDL_memset(&ddsd, 0, sizeof(ddsd)); |
| 0 | 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; | |
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135 codes = SDL_malloc(numcodes*sizeof(*codes)); |
| 0 | 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 } | |
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141 SDL_free(codes); |
| 0 | 142 } |
| 143 } else { | |
| 144 fprintf(stderr, "No FOURCC codes supported\n"); | |
| 145 } | |
| 146 #endif | |
| 147 | |
| 148 /* Create the overlay structure */ | |
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149 overlay = (SDL_Overlay *)SDL_malloc(sizeof *overlay); |
| 0 | 150 if ( overlay == NULL ) { |
| 151 SDL_OutOfMemory(); | |
| 152 return(NULL); | |
| 153 } | |
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154 SDL_memset(overlay, 0, (sizeof *overlay)); |
| 0 | 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 */ | |
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165 hwdata = (struct private_yuvhwdata *)SDL_malloc(sizeof *hwdata); |
| 0 | 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; | |
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186 break; |
| 0 | 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; | |
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203 SDL_memset(&ddsd, 0, sizeof(ddsd)); |
| 0 | 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 | |
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250 int DX5_DisplayYUVOverlay(_THIS, SDL_Overlay *overlay, SDL_Rect *src, SDL_Rect *dst) |
| 0 | 251 { |
| 252 HRESULT result; | |
| 253 LPDIRECTDRAWSURFACE3 surface; | |
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254 RECT srcrect, dstrect; |
| 0 | 255 |
| 256 surface = overlay->hwdata->surface; | |
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257 srcrect.top = src->y; |
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258 srcrect.bottom = srcrect.top+src->h; |
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259 srcrect.left = src->x; |
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260 srcrect.right = srcrect.left+src->w; |
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261 dstrect.top = SDL_bounds.top+dst->y; |
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262 dstrect.left = SDL_bounds.left+dst->x; |
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263 dstrect.bottom = dstrect.top+dst->h; |
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264 dstrect.right = dstrect.left+dst->w; |
| 0 | 265 #ifdef USE_DIRECTX_OVERLAY |
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266 result = IDirectDrawSurface3_UpdateOverlay(surface, &srcrect, |
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267 SDL_primary, &dstrect, DDOVER_SHOW, NULL); |
| 0 | 268 if ( result != DD_OK ) { |
| 269 SetDDerror("DirectDrawSurface3::UpdateOverlay", result); | |
| 270 return(-1); | |
| 271 } | |
| 272 #else | |
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273 result = IDirectDrawSurface3_Blt(SDL_primary, &dstrect, surface, &srcrect, |
| 0 | 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 } | |
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292 SDL_free(hwdata); |
| 0 | 293 } |
| 294 } | |
| 295 |