| 1 | /* |
| 2 | SDL - Simple DirectMedia Layer |
| 3 | Copyright (C) 1997-2009 Sam Lantinga |
| 4 | |
| 5 | This library is free software; you can redistribute it and/or |
| 6 | modify it under the terms of the GNU Lesser General Public |
| 7 | License as published by the Free Software Foundation; either |
| 8 | version 2.1 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 | Lesser General Public License for more details. |
| 14 | |
| 15 | You should have received a copy of the GNU Lesser General Public |
| 16 | License along with this library; if not, write to the Free Software |
| 17 | Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA |
| 18 | |
| 19 | Sam Lantinga |
| 20 | slouken@libsdl.org |
| 21 | */ |
| 22 | #include "SDL_config.h" |
| 23 | |
| 24 | /* This is the DirectFB implementation of YUV video overlays */ |
| 25 | |
| 26 | #include "SDL_video.h" |
| 27 | #include "SDL_DirectFB_yuv.h" |
| 28 | #include "../SDL_yuvfuncs.h" |
| 29 | |
| 30 | |
| 31 | /* The functions used to manipulate software video overlays */ |
| 32 | static struct private_yuvhwfuncs directfb_yuvfuncs = { |
| 33 | DirectFB_LockYUVOverlay, |
| 34 | DirectFB_UnlockYUVOverlay, |
| 35 | DirectFB_DisplayYUVOverlay, |
| 36 | DirectFB_FreeYUVOverlay |
| 37 | }; |
| 38 | |
| 39 | struct private_yuvhwdata { |
| 40 | DFBDisplayLayerID layer_id; |
| 41 | |
| 42 | IDirectFBDisplayLayer *layer; |
| 43 | IDirectFBSurface *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 | static DFBEnumerationResult |
| 51 | enum_layers_callback( DFBDisplayLayerID id, |
| 52 | DFBDisplayLayerDescription desc, |
| 53 | void *data ) |
| 54 | { |
| 55 | struct private_yuvhwdata *hwdata = (struct private_yuvhwdata *) data; |
| 56 | |
| 57 | /* we don't want the primary */ |
| 58 | if (id == DLID_PRIMARY) |
| 59 | return DFENUM_OK; |
| 60 | |
| 61 | /* take the one with a surface for video */ |
| 62 | if ((desc.caps & DLCAPS_SURFACE) && (desc.type & DLTF_VIDEO)) |
| 63 | { |
| 64 | hwdata->layer_id = id; |
| 65 | |
| 66 | return DFENUM_CANCEL; |
| 67 | } |
| 68 | |
| 69 | return DFENUM_OK; |
| 70 | } |
| 71 | |
| 72 | |
| 73 | static DFBResult CreateYUVSurface(_THIS, struct private_yuvhwdata *hwdata, |
| 74 | int width, int height, Uint32 format) |
| 75 | { |
| 76 | DFBResult ret; |
| 77 | IDirectFB *dfb = HIDDEN->dfb; |
| 78 | IDirectFBDisplayLayer *layer; |
| 79 | DFBDisplayLayerConfig conf; |
| 80 | |
| 81 | ret = dfb->EnumDisplayLayers (dfb, enum_layers_callback, hwdata); |
| 82 | if (ret) |
| 83 | { |
| 84 | SetDirectFBerror("IDirectFB::EnumDisplayLayers", ret); |
| 85 | return ret; |
| 86 | } |
| 87 | |
| 88 | if (!hwdata->layer_id) |
| 89 | return DFB_UNSUPPORTED; |
| 90 | |
| 91 | ret = dfb->GetDisplayLayer (dfb, hwdata->layer_id, &layer); |
| 92 | if (ret) |
| 93 | { |
| 94 | SetDirectFBerror("IDirectFB::GetDisplayLayer", ret); |
| 95 | return ret; |
| 96 | } |
| 97 | |
| 98 | conf.flags = DLCONF_WIDTH | DLCONF_HEIGHT | DLCONF_PIXELFORMAT; |
| 99 | conf.width = width; |
| 100 | conf.height = height; |
| 101 | |
| 102 | switch (format) |
| 103 | { |
| 104 | case SDL_YV12_OVERLAY: |
| 105 | conf.pixelformat = DSPF_YV12; |
| 106 | break; |
| 107 | case SDL_IYUV_OVERLAY: |
| 108 | conf.pixelformat = DSPF_I420; |
| 109 | break; |
| 110 | case SDL_YUY2_OVERLAY: |
| 111 | conf.pixelformat = DSPF_YUY2; |
| 112 | break; |
| 113 | case SDL_UYVY_OVERLAY: |
| 114 | conf.pixelformat = DSPF_UYVY; |
| 115 | break; |
| 116 | default: |
| 117 | fprintf (stderr, "SDL_DirectFB: Unsupported YUV format (0x%08x)!\n", format); |
| 118 | break; |
| 119 | } |
| 120 | |
| 121 | /* Need to set coop level or newer DirectFB versions will fail here. */ |
| 122 | ret = layer->SetCooperativeLevel (layer, DLSCL_ADMINISTRATIVE); |
| 123 | if (ret) |
| 124 | { |
| 125 | SetDirectFBerror("IDirectFBDisplayLayer::SetCooperativeLevel() failed", ret); |
| 126 | layer->Release (layer); |
| 127 | return ret; |
| 128 | } |
| 129 | |
| 130 | ret = layer->SetConfiguration (layer, &conf); |
| 131 | if (ret) |
| 132 | { |
| 133 | SetDirectFBerror("IDirectFBDisplayLayer::SetConfiguration", ret); |
| 134 | layer->Release (layer); |
| 135 | return ret; |
| 136 | } |
| 137 | |
| 138 | ret = layer->GetSurface (layer, &hwdata->surface); |
| 139 | if (ret) |
| 140 | { |
| 141 | SetDirectFBerror("IDirectFBDisplayLayer::GetSurface", ret); |
| 142 | layer->Release (layer); |
| 143 | return ret; |
| 144 | } |
| 145 | |
| 146 | hwdata->layer = layer; |
| 147 | |
| 148 | return DFB_OK; |
| 149 | } |
| 150 | |
| 151 | SDL_Overlay *DirectFB_CreateYUVOverlay(_THIS, int width, int height, Uint32 format, SDL_Surface *display) |
| 152 | { |
| 153 | SDL_Overlay *overlay; |
| 154 | struct private_yuvhwdata *hwdata; |
| 155 | |
| 156 | /* Create the overlay structure */ |
| 157 | overlay = SDL_calloc (1, sizeof(SDL_Overlay)); |
| 158 | if (!overlay) |
| 159 | { |
| 160 | SDL_OutOfMemory(); |
| 161 | return NULL; |
| 162 | } |
| 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 = &directfb_yuvfuncs; |
| 171 | |
| 172 | /* Create the pixel data and lookup tables */ |
| 173 | hwdata = SDL_calloc(1, sizeof(struct private_yuvhwdata)); |
| 174 | overlay->hwdata = hwdata; |
| 175 | if (!hwdata) |
| 176 | { |
| 177 | SDL_OutOfMemory(); |
| 178 | SDL_FreeYUVOverlay (overlay); |
| 179 | return NULL; |
| 180 | } |
| 181 | |
| 182 | if (CreateYUVSurface (this, hwdata, width, height, format)) |
| 183 | { |
| 184 | SDL_FreeYUVOverlay (overlay); |
| 185 | return NULL; |
| 186 | } |
| 187 | |
| 188 | overlay->hw_overlay = 1; |
| 189 | |
| 190 | /* Set up the plane pointers */ |
| 191 | overlay->pitches = hwdata->pitches; |
| 192 | overlay->pixels = hwdata->planes; |
| 193 | switch (format) |
| 194 | { |
| 195 | case SDL_YV12_OVERLAY: |
| 196 | case SDL_IYUV_OVERLAY: |
| 197 | overlay->planes = 3; |
| 198 | break; |
| 199 | default: |
| 200 | overlay->planes = 1; |
| 201 | break; |
| 202 | } |
| 203 | |
| 204 | /* We're all done.. */ |
| 205 | return overlay; |
| 206 | } |
| 207 | |
| 208 | int DirectFB_LockYUVOverlay(_THIS, SDL_Overlay *overlay) |
| 209 | { |
| 210 | DFBResult ret; |
| 211 | void *data; |
| 212 | int pitch; |
| 213 | IDirectFBSurface *surface = overlay->hwdata->surface; |
| 214 | |
| 215 | ret = surface->Lock (surface, DSLF_READ | DSLF_WRITE, &data, &pitch); |
| 216 | if (ret) |
| 217 | { |
| 218 | SetDirectFBerror("IDirectFBSurface::Lock", ret); |
| 219 | return -1; |
| 220 | } |
| 221 | |
| 222 | /* Find the pitch and offset values for the overlay */ |
| 223 | overlay->pitches[0] = (Uint16) pitch; |
| 224 | overlay->pixels[0] = (Uint8*) data; |
| 225 | |
| 226 | switch (overlay->format) |
| 227 | { |
| 228 | case SDL_YV12_OVERLAY: |
| 229 | case SDL_IYUV_OVERLAY: |
| 230 | /* Add the two extra planes */ |
| 231 | overlay->pitches[1] = overlay->pitches[0] / 2; |
| 232 | overlay->pitches[2] = overlay->pitches[0] / 2; |
| 233 | overlay->pixels[1] = overlay->pixels[0] + overlay->pitches[0] * overlay->h; |
| 234 | overlay->pixels[2] = overlay->pixels[1] + overlay->pitches[1] * overlay->h / 2; |
| 235 | break; |
| 236 | default: |
| 237 | /* Only one plane, no worries */ |
| 238 | break; |
| 239 | } |
| 240 | |
| 241 | return 0; |
| 242 | } |
| 243 | |
| 244 | void DirectFB_UnlockYUVOverlay(_THIS, SDL_Overlay *overlay) |
| 245 | { |
| 246 | IDirectFBSurface *surface = overlay->hwdata->surface; |
| 247 | |
| 248 | overlay->pixels[0] = overlay->pixels[1] = overlay->pixels[2] = NULL; |
| 249 | |
| 250 | surface->Unlock (surface); |
| 251 | } |
| 252 | |
| 253 | int DirectFB_DisplayYUVOverlay(_THIS, SDL_Overlay *overlay, SDL_Rect *src, SDL_Rect *dst) |
| 254 | { |
| 255 | DFBResult ret; |
| 256 | DFBDisplayLayerConfig conf; |
| 257 | IDirectFBDisplayLayer *primary = HIDDEN->layer; |
| 258 | IDirectFBDisplayLayer *layer = overlay->hwdata->layer; |
| 259 | |
| 260 | primary->GetConfiguration (primary, &conf); |
| 261 | |
| 262 | ret = layer->SetScreenLocation (layer, |
| 263 | dst->x / (float) conf.width, dst->y / (float) conf.height, |
| 264 | dst->w / (float) conf.width, dst->h / (float) conf.height ); |
| 265 | if (ret) |
| 266 | { |
| 267 | SetDirectFBerror("IDirectFBDisplayLayer::SetScreenLocation", ret); |
| 268 | return -1; |
| 269 | } |
| 270 | |
| 271 | return 0; |
| 272 | } |
| 273 | |
| 274 | void DirectFB_FreeYUVOverlay(_THIS, SDL_Overlay *overlay) |
| 275 | { |
| 276 | struct private_yuvhwdata *hwdata; |
| 277 | |
| 278 | hwdata = overlay->hwdata; |
| 279 | if (hwdata) |
| 280 | { |
| 281 | if (hwdata->surface) |
| 282 | hwdata->surface->Release (hwdata->surface); |
| 283 | |
| 284 | if (hwdata->layer) |
| 285 | hwdata->layer->Release (hwdata->layer); |
| 286 | |
| 287 | free (hwdata); |
| 288 | } |
| 289 | } |
| 290 | |