Mercurial > sdl-ios-xcode
annotate src/video/windx5/SDL_dx5yuv.c @ 1358:c71e05b4dc2e
More header massaging... works great on Windows. ;-)
| author | Sam Lantinga <slouken@libsdl.org> |
|---|---|
| date | Fri, 10 Feb 2006 06:48:43 +0000 |
| parents | 604d73db6802 |
| children | 19418e4422cb |
| 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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parents:
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15 You should have received a copy of the GNU Lesser General Public |
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parents:
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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 */ |
| 22 | |
| 23 /* This is the DirectDraw implementation of YUV video overlays */ | |
| 24 | |
| 25 #include "SDL_video.h" | |
| 26 #include "SDL_dx5yuv_c.h" | |
| 27 #include "SDL_yuvfuncs.h" | |
| 28 | |
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29 //#define USE_DIRECTX_OVERLAY |
| 0 | 30 |
| 31 /* The functions used to manipulate software video overlays */ | |
| 32 static struct private_yuvhwfuncs dx5_yuvfuncs = { | |
| 33 DX5_LockYUVOverlay, | |
| 34 DX5_UnlockYUVOverlay, | |
| 35 DX5_DisplayYUVOverlay, | |
| 36 DX5_FreeYUVOverlay | |
| 37 }; | |
| 38 | |
| 39 struct private_yuvhwdata { | |
| 40 LPDIRECTDRAWSURFACE3 surface; | |
| 41 | |
| 42 /* These are just so we don't have to allocate them separately */ | |
| 43 Uint16 pitches[3]; | |
| 44 Uint8 *planes[3]; | |
| 45 }; | |
| 46 | |
| 47 | |
| 48 static LPDIRECTDRAWSURFACE3 CreateYUVSurface(_THIS, | |
| 49 int width, int height, Uint32 format) | |
| 50 { | |
| 51 HRESULT result; | |
| 52 LPDIRECTDRAWSURFACE dd_surface1; | |
| 53 LPDIRECTDRAWSURFACE3 dd_surface3; | |
| 54 DDSURFACEDESC ddsd; | |
| 55 | |
| 56 /* Set up the surface description */ | |
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57 SDL_memset(&ddsd, 0, sizeof(ddsd)); |
| 0 | 58 ddsd.dwSize = sizeof(ddsd); |
| 59 ddsd.dwFlags = (DDSD_WIDTH|DDSD_HEIGHT|DDSD_CAPS|DDSD_PIXELFORMAT); | |
| 60 ddsd.dwWidth = width; | |
| 61 ddsd.dwHeight= height; | |
| 62 #ifdef USE_DIRECTX_OVERLAY | |
| 63 ddsd.ddsCaps.dwCaps = (DDSCAPS_OVERLAY|DDSCAPS_VIDEOMEMORY); | |
| 64 #else | |
| 65 ddsd.ddsCaps.dwCaps = (DDSCAPS_OFFSCREENPLAIN|DDSCAPS_VIDEOMEMORY); | |
| 66 #endif | |
| 67 ddsd.ddpfPixelFormat.dwSize = sizeof(ddsd.ddpfPixelFormat); | |
| 68 ddsd.ddpfPixelFormat.dwFlags = DDPF_FOURCC; | |
| 69 ddsd.ddpfPixelFormat.dwFourCC = format; | |
| 70 | |
| 71 /* Create the DirectDraw video surface */ | |
| 72 result = IDirectDraw2_CreateSurface(ddraw2, &ddsd, &dd_surface1, NULL); | |
| 73 if ( result != DD_OK ) { | |
| 74 SetDDerror("DirectDraw2::CreateSurface", result); | |
| 75 return(NULL); | |
| 76 } | |
| 77 result = IDirectDrawSurface_QueryInterface(dd_surface1, | |
| 78 &IID_IDirectDrawSurface3, (LPVOID *)&dd_surface3); | |
| 79 IDirectDrawSurface_Release(dd_surface1); | |
| 80 if ( result != DD_OK ) { | |
| 81 SetDDerror("DirectDrawSurface::QueryInterface", result); | |
| 82 return(NULL); | |
| 83 } | |
| 84 | |
| 85 /* Make sure the surface format was set properly */ | |
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86 SDL_memset(&ddsd, 0, sizeof(ddsd)); |
| 0 | 87 ddsd.dwSize = sizeof(ddsd); |
| 88 result = IDirectDrawSurface3_Lock(dd_surface3, NULL, | |
| 89 &ddsd, DDLOCK_NOSYSLOCK, NULL); | |
| 90 if ( result != DD_OK ) { | |
| 91 SetDDerror("DirectDrawSurface3::Lock", result); | |
| 92 IDirectDrawSurface_Release(dd_surface3); | |
| 93 return(NULL); | |
| 94 } | |
| 95 IDirectDrawSurface3_Unlock(dd_surface3, NULL); | |
| 96 | |
| 97 if ( !(ddsd.ddpfPixelFormat.dwFlags & DDPF_FOURCC) || | |
| 98 (ddsd.ddpfPixelFormat.dwFourCC != format) ) { | |
| 99 SDL_SetError("DDraw didn't use requested FourCC format"); | |
| 100 IDirectDrawSurface_Release(dd_surface3); | |
| 101 return(NULL); | |
| 102 } | |
| 103 | |
| 104 /* We're ready to go! */ | |
| 105 return(dd_surface3); | |
| 106 } | |
| 107 | |
| 108 #ifdef DEBUG_YUV | |
| 109 static char *PrintFOURCC(Uint32 code) | |
| 110 { | |
| 111 static char buf[5]; | |
| 112 | |
| 113 buf[3] = code >> 24; | |
| 114 buf[2] = (code >> 16) & 0xFF; | |
| 115 buf[1] = (code >> 8) & 0xFF; | |
| 116 buf[0] = (code & 0xFF); | |
| 117 return(buf); | |
| 118 } | |
| 119 #endif | |
| 120 | |
| 121 SDL_Overlay *DX5_CreateYUVOverlay(_THIS, int width, int height, Uint32 format, SDL_Surface *display) | |
| 122 { | |
| 123 SDL_Overlay *overlay; | |
| 124 struct private_yuvhwdata *hwdata; | |
| 125 | |
| 126 #ifdef DEBUG_YUV | |
| 127 DWORD numcodes; | |
| 128 DWORD *codes; | |
| 129 | |
| 130 printf("FOURCC format requested: 0x%x\n", PrintFOURCC(format)); | |
| 131 IDirectDraw2_GetFourCCCodes(ddraw2, &numcodes, NULL); | |
| 132 if ( numcodes ) { | |
| 133 DWORD i; | |
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134 codes = SDL_malloc(numcodes*sizeof(*codes)); |
| 0 | 135 if ( codes ) { |
| 136 IDirectDraw2_GetFourCCCodes(ddraw2, &numcodes, codes); | |
| 137 for ( i=0; i<numcodes; ++i ) { | |
| 138 fprintf(stderr, "Code %d: 0x%x\n", i, PrintFOURCC(codes[i])); | |
| 139 } | |
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140 SDL_free(codes); |
| 0 | 141 } |
| 142 } else { | |
| 143 fprintf(stderr, "No FOURCC codes supported\n"); | |
| 144 } | |
| 145 #endif | |
| 146 | |
| 147 /* Create the overlay structure */ | |
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148 overlay = (SDL_Overlay *)SDL_malloc(sizeof *overlay); |
| 0 | 149 if ( overlay == NULL ) { |
| 150 SDL_OutOfMemory(); | |
| 151 return(NULL); | |
| 152 } | |
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153 SDL_memset(overlay, 0, (sizeof *overlay)); |
| 0 | 154 |
| 155 /* Fill in the basic members */ | |
| 156 overlay->format = format; | |
| 157 overlay->w = width; | |
| 158 overlay->h = height; | |
| 159 | |
| 160 /* Set up the YUV surface function structure */ | |
| 161 overlay->hwfuncs = &dx5_yuvfuncs; | |
| 162 | |
| 163 /* Create the pixel data and lookup tables */ | |
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164 hwdata = (struct private_yuvhwdata *)SDL_malloc(sizeof *hwdata); |
| 0 | 165 overlay->hwdata = hwdata; |
| 166 if ( hwdata == NULL ) { | |
| 167 SDL_OutOfMemory(); | |
| 168 SDL_FreeYUVOverlay(overlay); | |
| 169 return(NULL); | |
| 170 } | |
| 171 hwdata->surface = CreateYUVSurface(this, width, height, format); | |
| 172 if ( hwdata->surface == NULL ) { | |
| 173 SDL_FreeYUVOverlay(overlay); | |
| 174 return(NULL); | |
| 175 } | |
| 176 overlay->hw_overlay = 1; | |
| 177 | |
| 178 /* Set up the plane pointers */ | |
| 179 overlay->pitches = hwdata->pitches; | |
| 180 overlay->pixels = hwdata->planes; | |
| 181 switch (format) { | |
| 182 case SDL_YV12_OVERLAY: | |
| 183 case SDL_IYUV_OVERLAY: | |
| 184 overlay->planes = 3; | |
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185 break; |
| 0 | 186 default: |
| 187 overlay->planes = 1; | |
| 188 break; | |
| 189 } | |
| 190 | |
| 191 /* We're all done.. */ | |
| 192 return(overlay); | |
| 193 } | |
| 194 | |
| 195 int DX5_LockYUVOverlay(_THIS, SDL_Overlay *overlay) | |
| 196 { | |
| 197 HRESULT result; | |
| 198 LPDIRECTDRAWSURFACE3 surface; | |
| 199 DDSURFACEDESC ddsd; | |
| 200 | |
| 201 surface = overlay->hwdata->surface; | |
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202 SDL_memset(&ddsd, 0, sizeof(ddsd)); |
| 0 | 203 ddsd.dwSize = sizeof(ddsd); |
| 204 result = IDirectDrawSurface3_Lock(surface, NULL, | |
| 205 &ddsd, DDLOCK_NOSYSLOCK, NULL); | |
| 206 if ( result == DDERR_SURFACELOST ) { | |
| 207 result = IDirectDrawSurface3_Restore(surface); | |
| 208 result = IDirectDrawSurface3_Lock(surface, NULL, &ddsd, | |
| 209 (DDLOCK_NOSYSLOCK|DDLOCK_WAIT), NULL); | |
| 210 } | |
| 211 if ( result != DD_OK ) { | |
| 212 SetDDerror("DirectDrawSurface3::Lock", result); | |
| 213 return(-1); | |
| 214 } | |
| 215 | |
| 216 /* Find the pitch and offset values for the overlay */ | |
| 217 #if defined(NONAMELESSUNION) | |
| 218 overlay->pitches[0] = (Uint16)ddsd.u1.lPitch; | |
| 219 #else | |
| 220 overlay->pitches[0] = (Uint16)ddsd.lPitch; | |
| 221 #endif | |
| 222 overlay->pixels[0] = (Uint8 *)ddsd.lpSurface; | |
| 223 switch (overlay->format) { | |
| 224 case SDL_YV12_OVERLAY: | |
| 225 case SDL_IYUV_OVERLAY: | |
| 226 /* Add the two extra planes */ | |
| 227 overlay->pitches[1] = overlay->pitches[0] / 2; | |
| 228 overlay->pitches[2] = overlay->pitches[0] / 2; | |
| 229 overlay->pixels[1] = overlay->pixels[0] + | |
| 230 overlay->pitches[0] * overlay->h; | |
| 231 overlay->pixels[2] = overlay->pixels[1] + | |
| 232 overlay->pitches[1] * overlay->h / 2; | |
| 233 break; | |
| 234 default: | |
| 235 /* Only one plane, no worries */ | |
| 236 break; | |
| 237 } | |
| 238 return(0); | |
| 239 } | |
| 240 | |
| 241 void DX5_UnlockYUVOverlay(_THIS, SDL_Overlay *overlay) | |
| 242 { | |
| 243 LPDIRECTDRAWSURFACE3 surface; | |
| 244 | |
| 245 surface = overlay->hwdata->surface; | |
| 246 IDirectDrawSurface3_Unlock(surface, NULL); | |
| 247 } | |
| 248 | |
| 249 int DX5_DisplayYUVOverlay(_THIS, SDL_Overlay *overlay, SDL_Rect *dstrect) | |
| 250 { | |
| 251 HRESULT result; | |
| 252 LPDIRECTDRAWSURFACE3 surface; | |
| 253 RECT src, dst; | |
| 254 | |
| 255 surface = overlay->hwdata->surface; | |
| 256 src.top = 0; | |
| 257 src.bottom = overlay->h; | |
| 258 src.left = 0; | |
| 259 src.right = overlay->w; | |
| 260 dst.top = SDL_bounds.top+dstrect->y; | |
| 261 dst.left = SDL_bounds.left+dstrect->x; | |
| 262 dst.bottom = dst.top+dstrect->h; | |
| 263 dst.right = dst.left+dstrect->w; | |
| 264 #ifdef USE_DIRECTX_OVERLAY | |
| 265 result = IDirectDrawSurface3_UpdateOverlay(surface, &src, | |
| 266 SDL_primary, &dst, DDOVER_SHOW, NULL); | |
| 267 if ( result != DD_OK ) { | |
| 268 SetDDerror("DirectDrawSurface3::UpdateOverlay", result); | |
| 269 return(-1); | |
| 270 } | |
| 271 #else | |
| 272 result = IDirectDrawSurface3_Blt(SDL_primary, &dst, surface, &src, | |
| 273 DDBLT_WAIT, NULL); | |
| 274 if ( result != DD_OK ) { | |
| 275 SetDDerror("DirectDrawSurface3::Blt", result); | |
| 276 return(-1); | |
| 277 } | |
| 278 #endif | |
| 279 return(0); | |
| 280 } | |
| 281 | |
| 282 void DX5_FreeYUVOverlay(_THIS, SDL_Overlay *overlay) | |
| 283 { | |
| 284 struct private_yuvhwdata *hwdata; | |
| 285 | |
| 286 hwdata = overlay->hwdata; | |
| 287 if ( hwdata ) { | |
| 288 if ( hwdata->surface ) { | |
| 289 IDirectDrawSurface_Release(hwdata->surface); | |
| 290 } | |
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291 SDL_free(hwdata); |
| 0 | 292 } |
| 293 } | |
| 294 |