Mercurial > sdl-ios-xcode
annotate src/video/windx5/SDL_dx5yuv.c @ 1585:980d2a0dc2a3
Date: Tue, 4 Mar 2003 15:05:31 -0800
From: "Jim"
Subject: [SDL] Frame Buffer patches...
Okay I'm new at patch generation - so please tell me if there's a better way
I could have done this.
Attached are two patch files generated with 'cvs diff -u'
SDL-fb-open-lock.patch applies to SDL_fbvideo.c
Modifies the open loop to check /dev/fb/0 found on devfs...
Modifies the lock code to return failure if the current virtual terminal
is not the one opened for frame buffer writing...
Lock would hang forever if switched away (ctrl-alt-F1) ...
SDL-fb-mousedrv-screensave.patch applies to SDL_fbevents.c
Switches default mouse mode based on SDL_MOUSEDRV - currently only
accepts PS2 - otherwise default is MS Mouse.
When the screen is switched - exisiting code (wrapped in ifdef
SAVE_SCREEN_COTENTS) would save the wrong bit of the screen....
( I run frame buffer 1600x1200, the size I requested was 800x600 - the
save would save the top 800 lines (non biased) and restore them... Adding
screen->offset fixed that )
However, if that option is not set, then a call to SDL_UpdateRect (full
screen) is made. (which may have had it's contents changed since the screen
is not entirely locked because of lock-failure patch)
Jim
[patches slightly tweaked for SDL 1.2.10]
| author | Sam Lantinga <slouken@libsdl.org> |
|---|---|
| date | Wed, 22 Mar 2006 07:48:22 +0000 |
| parents | d910939febfa |
| children | 51038e80ae59 |
| 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 | |
| 250 int DX5_DisplayYUVOverlay(_THIS, SDL_Overlay *overlay, SDL_Rect *dstrect) | |
| 251 { | |
| 252 HRESULT result; | |
| 253 LPDIRECTDRAWSURFACE3 surface; | |
| 254 RECT src, dst; | |
| 255 | |
| 256 surface = overlay->hwdata->surface; | |
| 257 src.top = 0; | |
| 258 src.bottom = overlay->h; | |
| 259 src.left = 0; | |
| 260 src.right = overlay->w; | |
| 261 dst.top = SDL_bounds.top+dstrect->y; | |
| 262 dst.left = SDL_bounds.left+dstrect->x; | |
| 263 dst.bottom = dst.top+dstrect->h; | |
| 264 dst.right = dst.left+dstrect->w; | |
| 265 #ifdef USE_DIRECTX_OVERLAY | |
| 266 result = IDirectDrawSurface3_UpdateOverlay(surface, &src, | |
| 267 SDL_primary, &dst, DDOVER_SHOW, NULL); | |
| 268 if ( result != DD_OK ) { | |
| 269 SetDDerror("DirectDrawSurface3::UpdateOverlay", result); | |
| 270 return(-1); | |
| 271 } | |
| 272 #else | |
| 273 result = IDirectDrawSurface3_Blt(SDL_primary, &dst, surface, &src, | |
| 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 |