Mercurial > sdl-ios-xcode
annotate src/video/windx5/SDL_dx5yuv.c @ 1338:604d73db6802
Removed uses of stdlib.h and string.h
| author | Sam Lantinga <slouken@libsdl.org> |
|---|---|
| date | Tue, 07 Feb 2006 09:29:18 +0000 |
| parents | 3692456e7b0f |
| children | c71e05b4dc2e |
| 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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Updated copyright information and removed rcs id lines (problematic in branch merges)
Sam Lantinga <slouken@libsdl.org>
parents:
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15 You should have received a copy of the GNU Lesser General Public |
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c9b51268668f
Updated copyright information and removed rcs id lines (problematic in branch merges)
Sam Lantinga <slouken@libsdl.org>
parents:
811
diff
changeset
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16 License along with this library; if not, write to the Free Software |
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Updated copyright information and removed rcs id lines (problematic in branch merges)
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parents:
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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 | |
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25 #include "SDL_stdlib.h" |
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26 #include "SDL_string.h" |
| 0 | 27 #include "SDL_error.h" |
| 28 #include "SDL_video.h" | |
| 29 #include "SDL_dx5yuv_c.h" | |
| 30 #include "SDL_yuvfuncs.h" | |
| 31 | |
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Don't use hardware overlay by default (seems much faster this way)
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32 //#define USE_DIRECTX_OVERLAY |
| 0 | 33 |
| 34 /* The functions used to manipulate software video overlays */ | |
| 35 static struct private_yuvhwfuncs dx5_yuvfuncs = { | |
| 36 DX5_LockYUVOverlay, | |
| 37 DX5_UnlockYUVOverlay, | |
| 38 DX5_DisplayYUVOverlay, | |
| 39 DX5_FreeYUVOverlay | |
| 40 }; | |
| 41 | |
| 42 struct private_yuvhwdata { | |
| 43 LPDIRECTDRAWSURFACE3 surface; | |
| 44 | |
| 45 /* These are just so we don't have to allocate them separately */ | |
| 46 Uint16 pitches[3]; | |
| 47 Uint8 *planes[3]; | |
| 48 }; | |
| 49 | |
| 50 | |
| 51 static LPDIRECTDRAWSURFACE3 CreateYUVSurface(_THIS, | |
| 52 int width, int height, Uint32 format) | |
| 53 { | |
| 54 HRESULT result; | |
| 55 LPDIRECTDRAWSURFACE dd_surface1; | |
| 56 LPDIRECTDRAWSURFACE3 dd_surface3; | |
| 57 DDSURFACEDESC ddsd; | |
| 58 | |
| 59 /* Set up the surface description */ | |
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60 SDL_memset(&ddsd, 0, sizeof(ddsd)); |
| 0 | 61 ddsd.dwSize = sizeof(ddsd); |
| 62 ddsd.dwFlags = (DDSD_WIDTH|DDSD_HEIGHT|DDSD_CAPS|DDSD_PIXELFORMAT); | |
| 63 ddsd.dwWidth = width; | |
| 64 ddsd.dwHeight= height; | |
| 65 #ifdef USE_DIRECTX_OVERLAY | |
| 66 ddsd.ddsCaps.dwCaps = (DDSCAPS_OVERLAY|DDSCAPS_VIDEOMEMORY); | |
| 67 #else | |
| 68 ddsd.ddsCaps.dwCaps = (DDSCAPS_OFFSCREENPLAIN|DDSCAPS_VIDEOMEMORY); | |
| 69 #endif | |
| 70 ddsd.ddpfPixelFormat.dwSize = sizeof(ddsd.ddpfPixelFormat); | |
| 71 ddsd.ddpfPixelFormat.dwFlags = DDPF_FOURCC; | |
| 72 ddsd.ddpfPixelFormat.dwFourCC = format; | |
| 73 | |
| 74 /* Create the DirectDraw video surface */ | |
| 75 result = IDirectDraw2_CreateSurface(ddraw2, &ddsd, &dd_surface1, NULL); | |
| 76 if ( result != DD_OK ) { | |
| 77 SetDDerror("DirectDraw2::CreateSurface", result); | |
| 78 return(NULL); | |
| 79 } | |
| 80 result = IDirectDrawSurface_QueryInterface(dd_surface1, | |
| 81 &IID_IDirectDrawSurface3, (LPVOID *)&dd_surface3); | |
| 82 IDirectDrawSurface_Release(dd_surface1); | |
| 83 if ( result != DD_OK ) { | |
| 84 SetDDerror("DirectDrawSurface::QueryInterface", result); | |
| 85 return(NULL); | |
| 86 } | |
| 87 | |
| 88 /* Make sure the surface format was set properly */ | |
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89 SDL_memset(&ddsd, 0, sizeof(ddsd)); |
| 0 | 90 ddsd.dwSize = sizeof(ddsd); |
| 91 result = IDirectDrawSurface3_Lock(dd_surface3, NULL, | |
| 92 &ddsd, DDLOCK_NOSYSLOCK, NULL); | |
| 93 if ( result != DD_OK ) { | |
| 94 SetDDerror("DirectDrawSurface3::Lock", result); | |
| 95 IDirectDrawSurface_Release(dd_surface3); | |
| 96 return(NULL); | |
| 97 } | |
| 98 IDirectDrawSurface3_Unlock(dd_surface3, NULL); | |
| 99 | |
| 100 if ( !(ddsd.ddpfPixelFormat.dwFlags & DDPF_FOURCC) || | |
| 101 (ddsd.ddpfPixelFormat.dwFourCC != format) ) { | |
| 102 SDL_SetError("DDraw didn't use requested FourCC format"); | |
| 103 IDirectDrawSurface_Release(dd_surface3); | |
| 104 return(NULL); | |
| 105 } | |
| 106 | |
| 107 /* We're ready to go! */ | |
| 108 return(dd_surface3); | |
| 109 } | |
| 110 | |
| 111 #ifdef DEBUG_YUV | |
| 112 static char *PrintFOURCC(Uint32 code) | |
| 113 { | |
| 114 static char buf[5]; | |
| 115 | |
| 116 buf[3] = code >> 24; | |
| 117 buf[2] = (code >> 16) & 0xFF; | |
| 118 buf[1] = (code >> 8) & 0xFF; | |
| 119 buf[0] = (code & 0xFF); | |
| 120 return(buf); | |
| 121 } | |
| 122 #endif | |
| 123 | |
| 124 SDL_Overlay *DX5_CreateYUVOverlay(_THIS, int width, int height, Uint32 format, SDL_Surface *display) | |
| 125 { | |
| 126 SDL_Overlay *overlay; | |
| 127 struct private_yuvhwdata *hwdata; | |
| 128 | |
| 129 #ifdef DEBUG_YUV | |
| 130 DWORD numcodes; | |
| 131 DWORD *codes; | |
| 132 | |
| 133 printf("FOURCC format requested: 0x%x\n", PrintFOURCC(format)); | |
| 134 IDirectDraw2_GetFourCCCodes(ddraw2, &numcodes, NULL); | |
| 135 if ( numcodes ) { | |
| 136 DWORD i; | |
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137 codes = SDL_malloc(numcodes*sizeof(*codes)); |
| 0 | 138 if ( codes ) { |
| 139 IDirectDraw2_GetFourCCCodes(ddraw2, &numcodes, codes); | |
| 140 for ( i=0; i<numcodes; ++i ) { | |
| 141 fprintf(stderr, "Code %d: 0x%x\n", i, PrintFOURCC(codes[i])); | |
| 142 } | |
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143 SDL_free(codes); |
| 0 | 144 } |
| 145 } else { | |
| 146 fprintf(stderr, "No FOURCC codes supported\n"); | |
| 147 } | |
| 148 #endif | |
| 149 | |
| 150 /* Create the overlay structure */ | |
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151 overlay = (SDL_Overlay *)SDL_malloc(sizeof *overlay); |
| 0 | 152 if ( overlay == NULL ) { |
| 153 SDL_OutOfMemory(); | |
| 154 return(NULL); | |
| 155 } | |
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156 SDL_memset(overlay, 0, (sizeof *overlay)); |
| 0 | 157 |
| 158 /* Fill in the basic members */ | |
| 159 overlay->format = format; | |
| 160 overlay->w = width; | |
| 161 overlay->h = height; | |
| 162 | |
| 163 /* Set up the YUV surface function structure */ | |
| 164 overlay->hwfuncs = &dx5_yuvfuncs; | |
| 165 | |
| 166 /* Create the pixel data and lookup tables */ | |
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167 hwdata = (struct private_yuvhwdata *)SDL_malloc(sizeof *hwdata); |
| 0 | 168 overlay->hwdata = hwdata; |
| 169 if ( hwdata == NULL ) { | |
| 170 SDL_OutOfMemory(); | |
| 171 SDL_FreeYUVOverlay(overlay); | |
| 172 return(NULL); | |
| 173 } | |
| 174 hwdata->surface = CreateYUVSurface(this, width, height, format); | |
| 175 if ( hwdata->surface == NULL ) { | |
| 176 SDL_FreeYUVOverlay(overlay); | |
| 177 return(NULL); | |
| 178 } | |
| 179 overlay->hw_overlay = 1; | |
| 180 | |
| 181 /* Set up the plane pointers */ | |
| 182 overlay->pitches = hwdata->pitches; | |
| 183 overlay->pixels = hwdata->planes; | |
| 184 switch (format) { | |
| 185 case SDL_YV12_OVERLAY: | |
| 186 case SDL_IYUV_OVERLAY: | |
| 187 overlay->planes = 3; | |
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188 break; |
| 0 | 189 default: |
| 190 overlay->planes = 1; | |
| 191 break; | |
| 192 } | |
| 193 | |
| 194 /* We're all done.. */ | |
| 195 return(overlay); | |
| 196 } | |
| 197 | |
| 198 int DX5_LockYUVOverlay(_THIS, SDL_Overlay *overlay) | |
| 199 { | |
| 200 HRESULT result; | |
| 201 LPDIRECTDRAWSURFACE3 surface; | |
| 202 DDSURFACEDESC ddsd; | |
| 203 | |
| 204 surface = overlay->hwdata->surface; | |
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changeset
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205 SDL_memset(&ddsd, 0, sizeof(ddsd)); |
| 0 | 206 ddsd.dwSize = sizeof(ddsd); |
| 207 result = IDirectDrawSurface3_Lock(surface, NULL, | |
| 208 &ddsd, DDLOCK_NOSYSLOCK, NULL); | |
| 209 if ( result == DDERR_SURFACELOST ) { | |
| 210 result = IDirectDrawSurface3_Restore(surface); | |
| 211 result = IDirectDrawSurface3_Lock(surface, NULL, &ddsd, | |
| 212 (DDLOCK_NOSYSLOCK|DDLOCK_WAIT), NULL); | |
| 213 } | |
| 214 if ( result != DD_OK ) { | |
| 215 SetDDerror("DirectDrawSurface3::Lock", result); | |
| 216 return(-1); | |
| 217 } | |
| 218 | |
| 219 /* Find the pitch and offset values for the overlay */ | |
| 220 #if defined(NONAMELESSUNION) | |
| 221 overlay->pitches[0] = (Uint16)ddsd.u1.lPitch; | |
| 222 #else | |
| 223 overlay->pitches[0] = (Uint16)ddsd.lPitch; | |
| 224 #endif | |
| 225 overlay->pixels[0] = (Uint8 *)ddsd.lpSurface; | |
| 226 switch (overlay->format) { | |
| 227 case SDL_YV12_OVERLAY: | |
| 228 case SDL_IYUV_OVERLAY: | |
| 229 /* Add the two extra planes */ | |
| 230 overlay->pitches[1] = overlay->pitches[0] / 2; | |
| 231 overlay->pitches[2] = overlay->pitches[0] / 2; | |
| 232 overlay->pixels[1] = overlay->pixels[0] + | |
| 233 overlay->pitches[0] * overlay->h; | |
| 234 overlay->pixels[2] = overlay->pixels[1] + | |
| 235 overlay->pitches[1] * overlay->h / 2; | |
| 236 break; | |
| 237 default: | |
| 238 /* Only one plane, no worries */ | |
| 239 break; | |
| 240 } | |
| 241 return(0); | |
| 242 } | |
| 243 | |
| 244 void DX5_UnlockYUVOverlay(_THIS, SDL_Overlay *overlay) | |
| 245 { | |
| 246 LPDIRECTDRAWSURFACE3 surface; | |
| 247 | |
| 248 surface = overlay->hwdata->surface; | |
| 249 IDirectDrawSurface3_Unlock(surface, NULL); | |
| 250 } | |
| 251 | |
| 252 int DX5_DisplayYUVOverlay(_THIS, SDL_Overlay *overlay, SDL_Rect *dstrect) | |
| 253 { | |
| 254 HRESULT result; | |
| 255 LPDIRECTDRAWSURFACE3 surface; | |
| 256 RECT src, dst; | |
| 257 | |
| 258 surface = overlay->hwdata->surface; | |
| 259 src.top = 0; | |
| 260 src.bottom = overlay->h; | |
| 261 src.left = 0; | |
| 262 src.right = overlay->w; | |
| 263 dst.top = SDL_bounds.top+dstrect->y; | |
| 264 dst.left = SDL_bounds.left+dstrect->x; | |
| 265 dst.bottom = dst.top+dstrect->h; | |
| 266 dst.right = dst.left+dstrect->w; | |
| 267 #ifdef USE_DIRECTX_OVERLAY | |
| 268 result = IDirectDrawSurface3_UpdateOverlay(surface, &src, | |
| 269 SDL_primary, &dst, DDOVER_SHOW, NULL); | |
| 270 if ( result != DD_OK ) { | |
| 271 SetDDerror("DirectDrawSurface3::UpdateOverlay", result); | |
| 272 return(-1); | |
| 273 } | |
| 274 #else | |
| 275 result = IDirectDrawSurface3_Blt(SDL_primary, &dst, surface, &src, | |
| 276 DDBLT_WAIT, NULL); | |
| 277 if ( result != DD_OK ) { | |
| 278 SetDDerror("DirectDrawSurface3::Blt", result); | |
| 279 return(-1); | |
| 280 } | |
| 281 #endif | |
| 282 return(0); | |
| 283 } | |
| 284 | |
| 285 void DX5_FreeYUVOverlay(_THIS, SDL_Overlay *overlay) | |
| 286 { | |
| 287 struct private_yuvhwdata *hwdata; | |
| 288 | |
| 289 hwdata = overlay->hwdata; | |
| 290 if ( hwdata ) { | |
| 291 if ( hwdata->surface ) { | |
| 292 IDirectDrawSurface_Release(hwdata->surface); | |
| 293 } | |
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294 SDL_free(hwdata); |
| 0 | 295 } |
| 296 } | |
| 297 |