Mercurial > sdl-ios-xcode
annotate src/video/windx5/SDL_dx5yuv.c @ 1643:51038e80ae59
More general fix for bug #189
The clipping is done at a higher level, and the low level functions are
passed clipped rectangles. Drivers which don't support source clipping
have not been changed, so the image will be squished instead of clipped,
but at least they will no longer crash when the destination rect was out
of bounds.
| author | Sam Lantinga <slouken@libsdl.org> |
|---|---|
| date | Mon, 17 Apr 2006 06:47:23 +0000 |
| parents | d910939febfa |
| 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 |