Mercurial > sdl-ios-xcode
annotate src/video/windx5/SDL_dx5yuv.c @ 1070:75e8378103a9
Forgot variable declaration
| author | Patrice Mandin <patmandin@gmail.com> |
|---|---|
| date | Mon, 06 Jun 2005 10:45:53 +0000 |
| parents | e06ec825242d |
| children | c9b51268668f |
| rev | line source |
|---|---|
| 0 | 1 /* |
| 2 SDL - Simple DirectMedia Layer | |
|
769
b8d311d90021
Updated copyright information for 2004 (Happy New Year!)
Sam Lantinga <slouken@libsdl.org>
parents:
297
diff
changeset
|
3 Copyright (C) 1997-2004 Sam Lantinga |
| 0 | 4 |
| 5 This library is free software; you can redistribute it and/or | |
| 6 modify it under the terms of the GNU Library General Public | |
| 7 License as published by the Free Software Foundation; either | |
| 8 version 2 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 Library General Public License for more details. | |
| 14 | |
| 15 You should have received a copy of the GNU Library General Public | |
| 16 License along with this library; if not, write to the Free | |
| 17 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
| 18 | |
| 19 Sam Lantinga | |
|
252
e8157fcb3114
Updated the source with the correct e-mail address
Sam Lantinga <slouken@libsdl.org>
parents:
33
diff
changeset
|
20 slouken@libsdl.org |
| 0 | 21 */ |
| 22 | |
| 23 #ifdef SAVE_RCSID | |
| 24 static char rcsid = | |
| 25 "@(#) $Id$"; | |
| 26 #endif | |
| 27 | |
| 28 /* This is the DirectDraw implementation of YUV video overlays */ | |
| 29 | |
| 30 #include <stdlib.h> | |
| 31 #include <string.h> | |
| 32 | |
| 33 #include "SDL_error.h" | |
| 34 #include "SDL_video.h" | |
| 35 #include "SDL_dx5yuv_c.h" | |
| 36 #include "SDL_yuvfuncs.h" | |
| 37 | |
|
811
e06ec825242d
Don't use hardware overlay by default (seems much faster this way)
Sam Lantinga <slouken@libsdl.org>
parents:
769
diff
changeset
|
38 //#define USE_DIRECTX_OVERLAY |
| 0 | 39 |
| 40 /* The functions used to manipulate software video overlays */ | |
| 41 static struct private_yuvhwfuncs dx5_yuvfuncs = { | |
| 42 DX5_LockYUVOverlay, | |
| 43 DX5_UnlockYUVOverlay, | |
| 44 DX5_DisplayYUVOverlay, | |
| 45 DX5_FreeYUVOverlay | |
| 46 }; | |
| 47 | |
| 48 struct private_yuvhwdata { | |
| 49 LPDIRECTDRAWSURFACE3 surface; | |
| 50 | |
| 51 /* These are just so we don't have to allocate them separately */ | |
| 52 Uint16 pitches[3]; | |
| 53 Uint8 *planes[3]; | |
| 54 }; | |
| 55 | |
| 56 | |
| 57 static LPDIRECTDRAWSURFACE3 CreateYUVSurface(_THIS, | |
| 58 int width, int height, Uint32 format) | |
| 59 { | |
| 60 HRESULT result; | |
| 61 LPDIRECTDRAWSURFACE dd_surface1; | |
| 62 LPDIRECTDRAWSURFACE3 dd_surface3; | |
| 63 DDSURFACEDESC ddsd; | |
| 64 | |
| 65 /* Set up the surface description */ | |
| 66 memset(&ddsd, 0, sizeof(ddsd)); | |
| 67 ddsd.dwSize = sizeof(ddsd); | |
| 68 ddsd.dwFlags = (DDSD_WIDTH|DDSD_HEIGHT|DDSD_CAPS|DDSD_PIXELFORMAT); | |
| 69 ddsd.dwWidth = width; | |
| 70 ddsd.dwHeight= height; | |
| 71 #ifdef USE_DIRECTX_OVERLAY | |
| 72 ddsd.ddsCaps.dwCaps = (DDSCAPS_OVERLAY|DDSCAPS_VIDEOMEMORY); | |
| 73 #else | |
| 74 ddsd.ddsCaps.dwCaps = (DDSCAPS_OFFSCREENPLAIN|DDSCAPS_VIDEOMEMORY); | |
| 75 #endif | |
| 76 ddsd.ddpfPixelFormat.dwSize = sizeof(ddsd.ddpfPixelFormat); | |
| 77 ddsd.ddpfPixelFormat.dwFlags = DDPF_FOURCC; | |
| 78 ddsd.ddpfPixelFormat.dwFourCC = format; | |
| 79 | |
| 80 /* Create the DirectDraw video surface */ | |
| 81 result = IDirectDraw2_CreateSurface(ddraw2, &ddsd, &dd_surface1, NULL); | |
| 82 if ( result != DD_OK ) { | |
| 83 SetDDerror("DirectDraw2::CreateSurface", result); | |
| 84 return(NULL); | |
| 85 } | |
| 86 result = IDirectDrawSurface_QueryInterface(dd_surface1, | |
| 87 &IID_IDirectDrawSurface3, (LPVOID *)&dd_surface3); | |
| 88 IDirectDrawSurface_Release(dd_surface1); | |
| 89 if ( result != DD_OK ) { | |
| 90 SetDDerror("DirectDrawSurface::QueryInterface", result); | |
| 91 return(NULL); | |
| 92 } | |
| 93 | |
| 94 /* Make sure the surface format was set properly */ | |
| 95 memset(&ddsd, 0, sizeof(ddsd)); | |
| 96 ddsd.dwSize = sizeof(ddsd); | |
| 97 result = IDirectDrawSurface3_Lock(dd_surface3, NULL, | |
| 98 &ddsd, DDLOCK_NOSYSLOCK, NULL); | |
| 99 if ( result != DD_OK ) { | |
| 100 SetDDerror("DirectDrawSurface3::Lock", result); | |
| 101 IDirectDrawSurface_Release(dd_surface3); | |
| 102 return(NULL); | |
| 103 } | |
| 104 IDirectDrawSurface3_Unlock(dd_surface3, NULL); | |
| 105 | |
| 106 if ( !(ddsd.ddpfPixelFormat.dwFlags & DDPF_FOURCC) || | |
| 107 (ddsd.ddpfPixelFormat.dwFourCC != format) ) { | |
| 108 SDL_SetError("DDraw didn't use requested FourCC format"); | |
| 109 IDirectDrawSurface_Release(dd_surface3); | |
| 110 return(NULL); | |
| 111 } | |
| 112 | |
| 113 /* We're ready to go! */ | |
| 114 return(dd_surface3); | |
| 115 } | |
| 116 | |
| 117 #ifdef DEBUG_YUV | |
| 118 static char *PrintFOURCC(Uint32 code) | |
| 119 { | |
| 120 static char buf[5]; | |
| 121 | |
| 122 buf[3] = code >> 24; | |
| 123 buf[2] = (code >> 16) & 0xFF; | |
| 124 buf[1] = (code >> 8) & 0xFF; | |
| 125 buf[0] = (code & 0xFF); | |
| 126 return(buf); | |
| 127 } | |
| 128 #endif | |
| 129 | |
| 130 SDL_Overlay *DX5_CreateYUVOverlay(_THIS, int width, int height, Uint32 format, SDL_Surface *display) | |
| 131 { | |
| 132 SDL_Overlay *overlay; | |
| 133 struct private_yuvhwdata *hwdata; | |
| 134 | |
| 135 #ifdef DEBUG_YUV | |
| 136 DWORD numcodes; | |
| 137 DWORD *codes; | |
| 138 | |
| 139 printf("FOURCC format requested: 0x%x\n", PrintFOURCC(format)); | |
| 140 IDirectDraw2_GetFourCCCodes(ddraw2, &numcodes, NULL); | |
| 141 if ( numcodes ) { | |
| 142 DWORD i; | |
| 143 codes = malloc(numcodes*sizeof(*codes)); | |
| 144 if ( codes ) { | |
| 145 IDirectDraw2_GetFourCCCodes(ddraw2, &numcodes, codes); | |
| 146 for ( i=0; i<numcodes; ++i ) { | |
| 147 fprintf(stderr, "Code %d: 0x%x\n", i, PrintFOURCC(codes[i])); | |
| 148 } | |
| 149 free(codes); | |
| 150 } | |
| 151 } else { | |
| 152 fprintf(stderr, "No FOURCC codes supported\n"); | |
| 153 } | |
| 154 #endif | |
| 155 | |
| 156 /* Create the overlay structure */ | |
| 157 overlay = (SDL_Overlay *)malloc(sizeof *overlay); | |
| 158 if ( overlay == NULL ) { | |
| 159 SDL_OutOfMemory(); | |
| 160 return(NULL); | |
| 161 } | |
| 162 memset(overlay, 0, (sizeof *overlay)); | |
| 163 | |
| 164 /* Fill in the basic members */ | |
| 165 overlay->format = format; | |
| 166 overlay->w = width; | |
| 167 overlay->h = height; | |
| 168 | |
| 169 /* Set up the YUV surface function structure */ | |
| 170 overlay->hwfuncs = &dx5_yuvfuncs; | |
| 171 | |
| 172 /* Create the pixel data and lookup tables */ | |
| 173 hwdata = (struct private_yuvhwdata *)malloc(sizeof *hwdata); | |
| 174 overlay->hwdata = hwdata; | |
| 175 if ( hwdata == NULL ) { | |
| 176 SDL_OutOfMemory(); | |
| 177 SDL_FreeYUVOverlay(overlay); | |
| 178 return(NULL); | |
| 179 } | |
| 180 hwdata->surface = CreateYUVSurface(this, width, height, format); | |
| 181 if ( hwdata->surface == NULL ) { | |
| 182 SDL_FreeYUVOverlay(overlay); | |
| 183 return(NULL); | |
| 184 } | |
| 185 overlay->hw_overlay = 1; | |
| 186 | |
| 187 /* Set up the plane pointers */ | |
| 188 overlay->pitches = hwdata->pitches; | |
| 189 overlay->pixels = hwdata->planes; | |
| 190 switch (format) { | |
| 191 case SDL_YV12_OVERLAY: | |
| 192 case SDL_IYUV_OVERLAY: | |
| 193 overlay->planes = 3; | |
|
33
81a7158fa836
Silly bug fix from Billy Biggs
Sam Lantinga <slouken@lokigames.com>
parents:
0
diff
changeset
|
194 break; |
| 0 | 195 default: |
| 196 overlay->planes = 1; | |
| 197 break; | |
| 198 } | |
| 199 | |
| 200 /* We're all done.. */ | |
| 201 return(overlay); | |
| 202 } | |
| 203 | |
| 204 int DX5_LockYUVOverlay(_THIS, SDL_Overlay *overlay) | |
| 205 { | |
| 206 HRESULT result; | |
| 207 LPDIRECTDRAWSURFACE3 surface; | |
| 208 DDSURFACEDESC ddsd; | |
| 209 | |
| 210 surface = overlay->hwdata->surface; | |
| 211 memset(&ddsd, 0, sizeof(ddsd)); | |
| 212 ddsd.dwSize = sizeof(ddsd); | |
| 213 result = IDirectDrawSurface3_Lock(surface, NULL, | |
| 214 &ddsd, DDLOCK_NOSYSLOCK, NULL); | |
| 215 if ( result == DDERR_SURFACELOST ) { | |
| 216 result = IDirectDrawSurface3_Restore(surface); | |
| 217 result = IDirectDrawSurface3_Lock(surface, NULL, &ddsd, | |
| 218 (DDLOCK_NOSYSLOCK|DDLOCK_WAIT), NULL); | |
| 219 } | |
| 220 if ( result != DD_OK ) { | |
| 221 SetDDerror("DirectDrawSurface3::Lock", result); | |
| 222 return(-1); | |
| 223 } | |
| 224 | |
| 225 /* Find the pitch and offset values for the overlay */ | |
| 226 #if defined(NONAMELESSUNION) | |
| 227 overlay->pitches[0] = (Uint16)ddsd.u1.lPitch; | |
| 228 #else | |
| 229 overlay->pitches[0] = (Uint16)ddsd.lPitch; | |
| 230 #endif | |
| 231 overlay->pixels[0] = (Uint8 *)ddsd.lpSurface; | |
| 232 switch (overlay->format) { | |
| 233 case SDL_YV12_OVERLAY: | |
| 234 case SDL_IYUV_OVERLAY: | |
| 235 /* Add the two extra planes */ | |
| 236 overlay->pitches[1] = overlay->pitches[0] / 2; | |
| 237 overlay->pitches[2] = overlay->pitches[0] / 2; | |
| 238 overlay->pixels[1] = overlay->pixels[0] + | |
| 239 overlay->pitches[0] * overlay->h; | |
| 240 overlay->pixels[2] = overlay->pixels[1] + | |
| 241 overlay->pitches[1] * overlay->h / 2; | |
| 242 break; | |
| 243 default: | |
| 244 /* Only one plane, no worries */ | |
| 245 break; | |
| 246 } | |
| 247 return(0); | |
| 248 } | |
| 249 | |
| 250 void DX5_UnlockYUVOverlay(_THIS, SDL_Overlay *overlay) | |
| 251 { | |
| 252 LPDIRECTDRAWSURFACE3 surface; | |
| 253 | |
| 254 surface = overlay->hwdata->surface; | |
| 255 IDirectDrawSurface3_Unlock(surface, NULL); | |
| 256 } | |
| 257 | |
| 258 int DX5_DisplayYUVOverlay(_THIS, SDL_Overlay *overlay, SDL_Rect *dstrect) | |
| 259 { | |
| 260 HRESULT result; | |
| 261 LPDIRECTDRAWSURFACE3 surface; | |
| 262 RECT src, dst; | |
| 263 | |
| 264 surface = overlay->hwdata->surface; | |
| 265 src.top = 0; | |
| 266 src.bottom = overlay->h; | |
| 267 src.left = 0; | |
| 268 src.right = overlay->w; | |
| 269 dst.top = SDL_bounds.top+dstrect->y; | |
| 270 dst.left = SDL_bounds.left+dstrect->x; | |
| 271 dst.bottom = dst.top+dstrect->h; | |
| 272 dst.right = dst.left+dstrect->w; | |
| 273 #ifdef USE_DIRECTX_OVERLAY | |
| 274 result = IDirectDrawSurface3_UpdateOverlay(surface, &src, | |
| 275 SDL_primary, &dst, DDOVER_SHOW, NULL); | |
| 276 if ( result != DD_OK ) { | |
| 277 SetDDerror("DirectDrawSurface3::UpdateOverlay", result); | |
| 278 return(-1); | |
| 279 } | |
| 280 #else | |
| 281 result = IDirectDrawSurface3_Blt(SDL_primary, &dst, surface, &src, | |
| 282 DDBLT_WAIT, NULL); | |
| 283 if ( result != DD_OK ) { | |
| 284 SetDDerror("DirectDrawSurface3::Blt", result); | |
| 285 return(-1); | |
| 286 } | |
| 287 #endif | |
| 288 return(0); | |
| 289 } | |
| 290 | |
| 291 void DX5_FreeYUVOverlay(_THIS, SDL_Overlay *overlay) | |
| 292 { | |
| 293 struct private_yuvhwdata *hwdata; | |
| 294 | |
| 295 hwdata = overlay->hwdata; | |
| 296 if ( hwdata ) { | |
| 297 if ( hwdata->surface ) { | |
| 298 IDirectDrawSurface_Release(hwdata->surface); | |
| 299 } | |
| 300 free(hwdata); | |
| 301 } | |
| 302 } | |
| 303 |