src/gallium/state_trackers/xorg/xorg_xv.c

   1 #include "xorg_tracker.h"
   2
   3 #include <xf86xv.h>
   4 #include <X11/extensions/Xv.h>
   5 #include <fourcc.h>
   6
   7 #include "xorg_exa.h"
   8 #include "xorg_renderer.h"
   9 #include "xorg_exa_tgsi.h"
  10
  11 #include "cso_cache/cso_context.h"
  12
  13 #include "pipe/p_screen.h"
  14 #include "pipe/p_inlines.h"
  15
  16 /*XXX get these from pipe's texture limits */
  17 #define IMAGE_MAX_WIDTH         2048
  18 #define IMAGE_MAX_HEIGHT        2048
  19
  20 #define RES_720P_X 1280
  21 #define RES_720P_Y 720
  22
  23
  24 /* The ITU-R BT.601 conversion matrix for SDTV. */
  25 /* original, matrix, but we transpose it to
  26  * make the shader easier
  27 static const float bt_601[] = {
  28     1.0, 0.0, 1.4075,   ,
  29     1.0, -0.3455, -0.7169, 0,
  30     1.0, 1.7790, 0., 0,
  31 };*/
  32 static const float bt_601[] = {
  33     1.0, 1.0, 1.0,        0.5,
  34     0.0, -0.3455, 1.7790, 0,
  35     1.4075, -0.7169, 0.,  0,
  36 };
  37
  38 /* The ITU-R BT.709 conversion matrix for HDTV. */
  39 /* original, but we transpose to make the conversion
  40  * in the shader easier
  41 static const float bt_709[] = {
  42     1.0, 0.0, 1.581, 0,
  43     1.0, -0.1881, -0.47, 0,
  44     1.0, 1.8629, 0., 0,
  45 };*/
  46 static const float bt_709[] = {
  47     1.0,   1.0,     1.0,     0.5,
  48     0.0,  -0.1881,  1.8629,  0,
  49     1.581,-0.47   , 0.0,     0,
  50 };
  51
  52 #define MAKE_ATOM(a) MakeAtom(a, sizeof(a) - 1, TRUE)
  53
  54 static Atom xvBrightness, xvContrast;
  55
  56 #define NUM_TEXTURED_ATTRIBUTES 2
  57 static XF86AttributeRec TexturedAttributes[NUM_TEXTURED_ATTRIBUTES] = {
  58    {XvSettable | XvGettable, -128, 127, "XV_BRIGHTNESS"},
  59    {XvSettable | XvGettable, 0, 255, "XV_CONTRAST"}
  60 };
  61
  62 #define NUM_FORMATS 3
  63 static XF86VideoFormatRec Formats[NUM_FORMATS] = {
  64    {15, TrueColor}, {16, TrueColor}, {24, TrueColor}
  65 };
  66
  67 static XF86VideoEncodingRec DummyEncoding[1] = {
  68    {
  69       0,
  70       "XV_IMAGE",
  71       IMAGE_MAX_WIDTH, IMAGE_MAX_HEIGHT,
  72       {1, 1}
  73    }
  74 };
  75
  76 #define NUM_IMAGES 2
  77 static XF86ImageRec Images[NUM_IMAGES] = {
  78    XVIMAGE_UYVY,
  79    XVIMAGE_YUY2,
  80 };
  81
  82 struct xorg_xv_port_priv {
  83    struct xorg_renderer *r;
  84
  85    RegionRec clip;
  86
  87    int brightness;
  88    int contrast;
  89
  90    int current_set;
  91    /* juggle two sets of seperate Y, U and V
  92     * textures */
  93    struct pipe_texture *yuv[2][3];
  94 };
  95
  96
  97 static void
  98 stop_video(ScrnInfoPtr pScrn, pointer data, Bool shutdown)
  99 {
 100    struct xorg_xv_port_priv *priv = (struct xorg_xv_port_priv *)data;
 101
 102    REGION_EMPTY(pScrn->pScreen, &priv->clip);
 103 }
 104
 105 static int
 106 set_port_attribute(ScrnInfoPtr pScrn,
 107                    Atom attribute, INT32 value, pointer data)
 108 {
 109    struct xorg_xv_port_priv *priv = (struct xorg_xv_port_priv *)data;
 110
 111    if (attribute == xvBrightness) {
 112       if ((value < -128) || (value > 127))
 113          return BadValue;
 114       priv->brightness = value;
 115    } else if (attribute == xvContrast) {
 116       if ((value < 0) || (value > 255))
 117          return BadValue;
 118       priv->contrast = value;
 119    } else
 120       return BadMatch;
 121
 122    return Success;
 123 }
 124
 125 static int
 126 get_port_attribute(ScrnInfoPtr pScrn,
 127                    Atom attribute, INT32 * value, pointer data)
 128 {
 129    struct xorg_xv_port_priv *priv = (struct xorg_xv_port_priv *)data;
 130
 131    if (attribute == xvBrightness)
 132       *value = priv->brightness;
 133    else if (attribute == xvContrast)
 134       *value = priv->contrast;
 135    else
 136       return BadMatch;
 137
 138    return Success;
 139 }
 140
 141 static void
 142 query_best_size(ScrnInfoPtr pScrn,
 143                 Bool motion,
 144                 short vid_w, short vid_h,
 145                 short drw_w, short drw_h,
 146                 unsigned int *p_w, unsigned int *p_h, pointer data)
 147 {
 148    if (vid_w > (drw_w << 1))
 149       drw_w = vid_w >> 1;
 150    if (vid_h > (drw_h << 1))
 151       drw_h = vid_h >> 1;
 152
 153    *p_w = drw_w;
 154    *p_h = drw_h;
 155 }
 156
 157 static INLINE struct pipe_texture *
 158 create_component_texture(struct pipe_context *pipe,
 159                          int width, int height)
 160 {
 161    struct pipe_screen *screen = pipe->screen;
 162    struct pipe_texture *tex = 0;
 163    struct pipe_texture templ;
 164
 165    memset(&templ, 0, sizeof(templ));
 166    templ.target = PIPE_TEXTURE_2D;
 167    templ.format = PIPE_FORMAT_L8_UNORM;
 168    templ.last_level = 0;
 169    templ.width[0] = width;
 170    templ.height[0] = height;
 171    templ.depth[0] = 1;
 172    pf_get_block(PIPE_FORMAT_L8_UNORM, &templ.block);
 173    templ.tex_usage = PIPE_TEXTURE_USAGE_SAMPLER;
 174
 175    tex = screen->texture_create(screen, &templ);
 176
 177    return tex;
 178 }
 179
 180 static int
 181 check_yuv_textures(struct xorg_xv_port_priv *priv,  int width, int height)
 182 {
 183    struct pipe_texture **dst = priv->yuv[priv->current_set];
 184    if (!dst[0] ||
 185        dst[0]->width[0] != width ||
 186        dst[0]->height[0] != height) {
 187       pipe_texture_reference(&dst[0], NULL);
 188    }
 189    if (!dst[1] ||
 190        dst[1]->width[0] != width ||
 191        dst[1]->height[0] != height) {
 192       pipe_texture_reference(&dst[1], NULL);
 193    }
 194    if (!dst[2] ||
 195        dst[2]->width[0] != width ||
 196        dst[2]->height[0] != height) {
 197       pipe_texture_reference(&dst[2], NULL);
 198    }
 199
 200    if (!dst[0])
 201       dst[0] = create_component_texture(priv->r->pipe, width, height);
 202
 203    if (!dst[1])
 204       dst[1] = create_component_texture(priv->r->pipe, width, height);
 205
 206    if (!dst[2])
 207       dst[2] = create_component_texture(priv->r->pipe, width, height);
 208
 209    if (!dst[0] || !dst[1] || !dst[2])
 210       return BadAlloc;
 211
 212    return Success;
 213 }
 214
 215 static void
 216 copy_packed_data(ScrnInfoPtr pScrn,
 217                  struct xorg_xv_port_priv *port,
 218                  int id,
 219                  unsigned char *buf,
 220                  int srcPitch,
 221                  int left,
 222                  int top,
 223                  int w, int h)
 224 {
 225    unsigned char *src;
 226    int i, j;
 227    struct pipe_texture **dst = port->yuv[port->current_set];
 228    struct pipe_transfer *ytrans, *utrans, *vtrans;
 229    struct pipe_screen *screen = port->r->pipe->screen;
 230    char *ymap, *vmap, *umap;
 231    unsigned char y1, y2, u, v;
 232    int yidx, uidx, vidx;
 233    int y_array_size = w * h;
 234
 235    src = buf + (top * srcPitch) + (left << 1);
 236
 237    ytrans = screen->get_tex_transfer(screen, dst[0],
 238                                      0, 0, 0,
 239                                      PIPE_TRANSFER_WRITE,
 240                                      left, top, w, h);
 241    utrans = screen->get_tex_transfer(screen, dst[1],
 242                                      0, 0, 0,
 243                                      PIPE_TRANSFER_WRITE,
 244                                      left, top, w, h);
 245    vtrans = screen->get_tex_transfer(screen, dst[2],
 246                                      0, 0, 0,
 247                                      PIPE_TRANSFER_WRITE,
 248                                      left, top, w, h);
 249
 250    ymap = (char*)screen->transfer_map(screen, ytrans);
 251    umap = (char*)screen->transfer_map(screen, utrans);
 252    vmap = (char*)screen->transfer_map(screen, vtrans);
 253
 254    yidx = uidx = vidx = 0;
 255
 256    switch (id) {
 257    case FOURCC_YV12: {
 258       for (i = 0; i < w; ++i) {
 259          for (j = 0; j < h; ++j) {
 260             /*XXX use src? */
 261             y1  = buf[j*w + i];
 262             u   = buf[(j/2) * (w/2) + i/2 + y_array_size];
 263             v   = buf[(j/2) * (w/2) + i/2 + y_array_size + y_array_size/4];
 264             ymap[yidx++] = y1;
 265             umap[uidx++] = u;
 266             vmap[vidx++] = v;
 267          }
 268       }
 269    }
 270       break;
 271    case FOURCC_UYVY:
 272       for (i = 0; i < y_array_size; i +=2 ) {
 273          /* extracting two pixels */
 274          u  = buf[0];
 275          y1 = buf[1];
 276          v  = buf[2];
 277          y2 = buf[3];
 278          buf += 4;
 279
 280          ymap[yidx++] = y1;
 281          ymap[yidx++] = y2;
 282          umap[uidx++] = u;
 283          umap[uidx++] = u;
 284          vmap[vidx++] = v;
 285          vmap[vidx++] = v;
 286       }
 287       break;
 288    case FOURCC_YUY2:
 289       for (i = 0; i < y_array_size; i +=2 ) {
 290          /* extracting two pixels */
 291          y1 = buf[0];
 292          u  = buf[1];
 293          y2 = buf[2];
 294          v  = buf[3];
 295
 296          buf += 4;
 297
 298          ymap[yidx++] = y1;
 299          ymap[yidx++] = y2;
 300          umap[uidx++] = u;
 301          umap[uidx++] = u;
 302          vmap[vidx++] = v;
 303          vmap[vidx++] = v;
 304       }
 305       break;
 306    default:
 307       debug_assert(!"Unsupported yuv format!");
 308       break;
 309    }
 310
 311    screen->transfer_unmap(screen, ytrans);
 312    screen->transfer_unmap(screen, utrans);
 313    screen->transfer_unmap(screen, vtrans);
 314    screen->tex_transfer_destroy(ytrans);
 315    screen->tex_transfer_destroy(utrans);
 316    screen->tex_transfer_destroy(vtrans);
 317 }
 318
 319
 320 static void
 321 setup_fs_video_constants(struct xorg_renderer *r, boolean hdtv)
 322 {
 323    const int param_bytes = 12 * sizeof(float);
 324    const float *video_constants = (hdtv) ? bt_709 : bt_601;
 325
 326    renderer_set_constants(r, PIPE_SHADER_FRAGMENT,
 327                           video_constants, param_bytes);
 328 }
 329
 330 static void
 331 draw_yuv(struct xorg_xv_port_priv *port,
 332          int src_x, int src_y, int src_w, int src_h,
 333          int dst_x, int dst_y, int dst_w, int dst_h)
 334 {
 335    struct pipe_texture **textures = port->yuv[port->current_set];
 336
 337    renderer_draw_yuv(port->r,
 338                      src_x, src_y, src_w, src_h,
 339                      dst_x, dst_y, dst_w, dst_h,
 340                      textures);
 341 }
 342
 343 static void
 344 bind_blend_state(struct xorg_xv_port_priv *port)
 345 {
 346    struct pipe_blend_state blend;
 347
 348    memset(&blend, 0, sizeof(struct pipe_blend_state));
 349    blend.blend_enable = 1;
 350    blend.colormask |= PIPE_MASK_RGBA;
 351
 352    /* porter&duff src */
 353    blend.rgb_src_factor   = PIPE_BLENDFACTOR_ONE;
 354    blend.alpha_src_factor = PIPE_BLENDFACTOR_ONE;
 355    blend.rgb_dst_factor   = PIPE_BLENDFACTOR_ZERO;
 356    blend.alpha_dst_factor = PIPE_BLENDFACTOR_ZERO;
 357
 358    cso_set_blend(port->r->cso, &blend);
 359 }
 360
 361
 362 static void
 363 bind_shaders(struct xorg_xv_port_priv *port)
 364 {
 365    unsigned vs_traits = 0, fs_traits = 0;
 366    struct xorg_shader shader;
 367
 368    vs_traits |= VS_YUV;
 369    fs_traits |= FS_YUV;
 370
 371    shader = xorg_shaders_get(port->r->shaders, vs_traits, fs_traits);
 372    cso_set_vertex_shader_handle(port->r->cso, shader.vs);
 373    cso_set_fragment_shader_handle(port->r->cso, shader.fs);
 374 }
 375
 376 static INLINE void
 377 conditional_flush(struct pipe_context *pipe, struct pipe_texture **tex,
 378                   int num)
 379 {
 380    int i;
 381    for (i = 0; i < num; ++i) {
 382       if (tex[i] && pipe->is_texture_referenced(pipe, tex[i], 0, 0) &
 383           PIPE_REFERENCED_FOR_WRITE) {
 384          pipe->flush(pipe, PIPE_FLUSH_RENDER_CACHE, NULL);
 385          return;
 386       }
 387    }
 388 }
 389
 390 static void
 391 bind_samplers(struct xorg_xv_port_priv *port)
 392 {
 393    struct pipe_sampler_state *samplers[PIPE_MAX_SAMPLERS];
 394    struct pipe_sampler_state sampler;
 395    struct pipe_texture **dst = port->yuv[port->current_set];
 396
 397    memset(&sampler, 0, sizeof(struct pipe_sampler_state));
 398
 399    conditional_flush(port->r->pipe, dst, 3);
 400
 401    sampler.wrap_s = PIPE_TEX_WRAP_CLAMP;
 402    sampler.wrap_t = PIPE_TEX_WRAP_CLAMP;
 403    sampler.min_img_filter = PIPE_TEX_FILTER_LINEAR;
 404    sampler.mag_img_filter = PIPE_TEX_FILTER_LINEAR;
 405    sampler.min_mip_filter = PIPE_TEX_MIPFILTER_NEAREST;
 406    sampler.normalized_coords = 1;
 407
 408    samplers[0] = &sampler;
 409    samplers[1] = &sampler;
 410    samplers[2] = &sampler;
 411
 412
 413    cso_set_samplers(port->r->cso, 3,
 414                     (const struct pipe_sampler_state **)samplers);
 415    cso_set_sampler_textures(port->r->cso, 3,
 416                             dst);
 417 }
 418
 419 static int
 420 display_video(ScrnInfoPtr pScrn, struct xorg_xv_port_priv *pPriv, int id,
 421               RegionPtr dstRegion,
 422               int src_x, int src_y, int src_w, int src_h,
 423               int dstX, int dstY, int dst_w, int dst_h,
 424               PixmapPtr pPixmap)
 425 {
 426    modesettingPtr ms = modesettingPTR(pScrn);
 427    BoxPtr pbox;
 428    int nbox;
 429    int dxo, dyo;
 430    Bool hdtv;
 431    int x, y, w, h;
 432    struct exa_pixmap_priv *dst = exaGetPixmapDriverPrivate(pPixmap);
 433    struct pipe_surface *dst_surf = xorg_gpu_surface(pPriv->r->pipe->screen, dst);
 434
 435    if (dst && !dst->tex) {
 436         xorg_exa_set_shared_usage(pPixmap);
 437         pScrn->pScreen->ModifyPixmapHeader(pPixmap, 0, 0, 0, 0, 0, NULL);
 438    }
 439
 440    if (!dst || !dst->tex)
 441       XORG_FALLBACK("Xv destination %s", !dst ? "!dst" : "!dst->tex");
 442
 443    hdtv = ((src_w >= RES_720P_X) && (src_h >= RES_720P_Y));
 444
 445    REGION_TRANSLATE(pScrn->pScreen, dstRegion, -pPixmap->screen_x,
 446                     -pPixmap->screen_y);
 447
 448    dxo = dstRegion->extents.x1;
 449    dyo = dstRegion->extents.y1;
 450
 451    pbox = REGION_RECTS(dstRegion);
 452    nbox = REGION_NUM_RECTS(dstRegion);
 453
 454    renderer_bind_destination(pPriv->r, dst_surf,
 455                              dst_surf->width, dst_surf->height);
 456
 457    bind_blend_state(pPriv);
 458    bind_shaders(pPriv);
 459    bind_samplers(pPriv);
 460    setup_fs_video_constants(pPriv->r, hdtv);
 461
 462    exaMoveInPixmap(pPixmap);
 463    DamageDamageRegion(&pPixmap->drawable, dstRegion);
 464
 465    while (nbox--) {
 466       int box_x1 = pbox->x1;
 467       int box_y1 = pbox->y1;
 468       int box_x2 = pbox->x2;
 469       int box_y2 = pbox->y2;
 470       float diff_x = (float)src_w / (float)dst_w;
 471       float diff_y = (float)src_h / (float)dst_h;
 472       int offset_x = box_x1 - dstX + pPixmap->screen_x;
 473       int offset_y = box_y1 - dstY + pPixmap->screen_y;
 474       int offset_w;
 475       int offset_h;
 476
 477       x = box_x1;
 478       y = box_y1;
 479       w = box_x2 - box_x1;
 480       h = box_y2 - box_y1;
 481
 482       offset_w = dst_w - w;
 483       offset_h = dst_h - h;
 484
 485       draw_yuv(pPriv, src_x + offset_x*diff_x, src_y + offset_y*diff_y,
 486                src_w - offset_w*diff_x, src_h - offset_h*diff_x,
 487                x, y, w, h);
 488
 489       pbox++;
 490    }
 491    DamageRegionProcessPending(&pPixmap->drawable);
 492
 493    pipe_surface_reference(&dst_surf, NULL);
 494
 495    return TRUE;
 496 }
 497
 498 static int
 499 put_image(ScrnInfoPtr pScrn,
 500           short src_x, short src_y,
 501           short drw_x, short drw_y,
 502           short src_w, short src_h,
 503           short drw_w, short drw_h,
 504           int id, unsigned char *buf,
 505           short width, short height,
 506           Bool sync, RegionPtr clipBoxes, pointer data,
 507           DrawablePtr pDraw)
 508 {
 509    struct xorg_xv_port_priv *pPriv = (struct xorg_xv_port_priv *) data;
 510    ScreenPtr pScreen = screenInfo.screens[pScrn->scrnIndex];
 511    PixmapPtr pPixmap;
 512    INT32 x1, x2, y1, y2;
 513    int srcPitch;
 514    BoxRec dstBox;
 515    int ret;
 516
 517    /* Clip */
 518    x1 = src_x;
 519    x2 = src_x + src_w;
 520    y1 = src_y;
 521    y2 = src_y + src_h;
 522
 523    dstBox.x1 = drw_x;
 524    dstBox.x2 = drw_x + drw_w;
 525    dstBox.y1 = drw_y;
 526    dstBox.y2 = drw_y + drw_h;
 527
 528    if (!xf86XVClipVideoHelper(&dstBox, &x1, &x2, &y1, &y2, clipBoxes,
 529                               width, height))
 530       return Success;
 531
 532    switch (id) {
 533    case FOURCC_UYVY:
 534    case FOURCC_YUY2:
 535    default:
 536       srcPitch = width << 1;
 537       break;
 538    }
 539
 540    ret = check_yuv_textures(pPriv, width, height);
 541
 542    if (ret)
 543       return ret;
 544
 545    copy_packed_data(pScrn, pPriv, id, buf, srcPitch,
 546                     src_x, src_y, width, height);
 547
 548    if (pDraw->type == DRAWABLE_WINDOW) {
 549       pPixmap = (*pScreen->GetWindowPixmap)((WindowPtr)pDraw);
 550    } else {
 551       pPixmap = (PixmapPtr)pDraw;
 552    }
 553
 554    display_video(pScrn, pPriv, id, clipBoxes,
 555                  src_x, src_y, src_w, src_h,
 556                  drw_x, drw_y,
 557                  drw_w, drw_h, pPixmap);
 558
 559    pPriv->current_set = (pPriv->current_set + 1) & 1;
 560    return Success;
 561 }
 562
 563 static int
 564 query_image_attributes(ScrnInfoPtr pScrn,
 565                        int id,
 566                        unsigned short *w, unsigned short *h,
 567                        int *pitches, int *offsets)
 568 {
 569    int size;
 570
 571    if (*w > IMAGE_MAX_WIDTH)
 572       *w = IMAGE_MAX_WIDTH;
 573    if (*h > IMAGE_MAX_HEIGHT)
 574       *h = IMAGE_MAX_HEIGHT;
 575
 576    *w = (*w + 1) & ~1;
 577    if (offsets)
 578       offsets[0] = 0;
 579
 580    switch (id) {
 581    case FOURCC_UYVY:
 582    case FOURCC_YUY2:
 583    default:
 584       size = *w << 1;
 585       if (pitches)
 586          pitches[0] = size;
 587       size *= *h;
 588       break;
 589    }
 590
 591    return size;
 592 }
 593
 594 static struct xorg_xv_port_priv *
 595 port_priv_create(struct xorg_renderer *r)
 596 {
 597    struct xorg_xv_port_priv *priv = NULL;
 598
 599    priv = calloc(1, sizeof(struct xorg_xv_port_priv));
 600
 601    if (!priv)
 602       return NULL;
 603
 604    priv->r = r;
 605
 606    REGION_NULL(pScreen, &priv->clip);
 607
 608    debug_assert(priv && priv->r);
 609
 610    return priv;
 611 }
 612
 613 static XF86VideoAdaptorPtr
 614 xorg_setup_textured_adapter(ScreenPtr pScreen)
 615 {
 616    ScrnInfoPtr pScrn = xf86Screens[pScreen->myNum];
 617    modesettingPtr ms = modesettingPTR(pScrn);
 618    XF86VideoAdaptorPtr adapt;
 619    XF86AttributePtr attrs;
 620    DevUnion *dev_unions;
 621    int nports = 16, i;
 622    int nattributes;
 623
 624    nattributes = NUM_TEXTURED_ATTRIBUTES;
 625
 626    debug_assert(ms->exa);
 627    debug_assert(ms->exa->renderer);
 628
 629    adapt = calloc(1, sizeof(XF86VideoAdaptorRec));
 630    dev_unions = calloc(nports, sizeof(DevUnion));
 631    attrs = calloc(nattributes, sizeof(XF86AttributeRec));
 632    if (adapt == NULL || dev_unions == NULL || attrs == NULL) {
 633       free(adapt);
 634       free(dev_unions);
 635       free(attrs);
 636       return NULL;
 637    }
 638
 639    adapt->type = XvWindowMask | XvInputMask | XvImageMask;
 640    adapt->flags = 0;
 641    adapt->name = "Gallium3D Textured Video";
 642    adapt->nEncodings = 1;
 643    adapt->pEncodings = DummyEncoding;
 644    adapt->nFormats = NUM_FORMATS;
 645    adapt->pFormats = Formats;
 646    adapt->nPorts = 0;
 647    adapt->pPortPrivates = dev_unions;
 648    adapt->nAttributes = nattributes;
 649    adapt->pAttributes = attrs;
 650    memcpy(attrs, TexturedAttributes, nattributes * sizeof(XF86AttributeRec));
 651    adapt->nImages = NUM_IMAGES;
 652    adapt->pImages = Images;
 653    adapt->PutVideo = NULL;
 654    adapt->PutStill = NULL;
 655    adapt->GetVideo = NULL;
 656    adapt->GetStill = NULL;
 657    adapt->StopVideo = stop_video;
 658    adapt->SetPortAttribute = set_port_attribute;
 659    adapt->GetPortAttribute = get_port_attribute;
 660    adapt->QueryBestSize = query_best_size;
 661    adapt->PutImage = put_image;
 662    adapt->QueryImageAttributes = query_image_attributes;
 663
 664    for (i = 0; i < nports; i++) {
 665       struct xorg_xv_port_priv *priv =
 666          port_priv_create(ms->exa->renderer);
 667
 668       adapt->pPortPrivates[i].ptr = (pointer) (priv);
 669       adapt->nPorts++;
 670    }
 671
 672    return adapt;
 673 }
 674
 675 void
 676 xorg_xv_init(ScreenPtr pScreen)
 677 {
 678    ScrnInfoPtr pScrn = xf86Screens[pScreen->myNum];
 679    /*modesettingPtr ms = modesettingPTR(pScrn);*/
 680    XF86VideoAdaptorPtr *adaptors, *new_adaptors = NULL;
 681    XF86VideoAdaptorPtr textured_adapter;
 682    int num_adaptors;
 683
 684    num_adaptors = xf86XVListGenericAdaptors(pScrn, &adaptors);
 685    new_adaptors = malloc((num_adaptors + 1) * sizeof(XF86VideoAdaptorPtr *));
 686    if (new_adaptors == NULL)
 687       return;
 688
 689    memcpy(new_adaptors, adaptors, num_adaptors * sizeof(XF86VideoAdaptorPtr));
 690    adaptors = new_adaptors;
 691
 692    /* Add the adaptors supported by our hardware.  First, set up the atoms
 693     * that will be used by both output adaptors.
 694     */
 695    xvBrightness = MAKE_ATOM("XV_BRIGHTNESS");
 696    xvContrast = MAKE_ATOM("XV_CONTRAST");
 697
 698    textured_adapter = xorg_setup_textured_adapter(pScreen);
 699
 700    debug_assert(textured_adapter);
 701
 702    if (textured_adapter) {
 703       adaptors[num_adaptors++] = textured_adapter;
 704    }
 705
 706    if (num_adaptors) {
 707       xf86XVScreenInit(pScreen, adaptors, num_adaptors);
 708    } else {
 709       xf86DrvMsg(pScrn->scrnIndex, X_WARNING,
 710                  "Disabling Xv because no adaptors could be initialized.\n");
 711    }
 712
 713    free(adaptors);
 714 }