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 3
  77 static XF86ImageRec Images[NUM_IMAGES] = {
  78    XVIMAGE_UYVY,
  79    XVIMAGE_YUY2,
  80    XVIMAGE_YV12,
  81 };
  82
  83 struct xorg_xv_port_priv {
  84    struct xorg_renderer *r;
  85
  86    RegionRec clip;
  87
  88    int brightness;
  89    int contrast;
  90
  91    int current_set;
  92    /* juggle two sets of seperate Y, U and V
  93     * textures */
  94    struct pipe_texture *yuv[2][3];
  95 };
  96
  97
  98 static void
  99 stop_video(ScrnInfoPtr pScrn, pointer data, Bool shutdown)
 100 {
 101    struct xorg_xv_port_priv *priv = (struct xorg_xv_port_priv *)data;
 102
 103    REGION_EMPTY(pScrn->pScreen, &priv->clip);
 104 }
 105
 106 static int
 107 set_port_attribute(ScrnInfoPtr pScrn,
 108                    Atom attribute, INT32 value, pointer data)
 109 {
 110    struct xorg_xv_port_priv *priv = (struct xorg_xv_port_priv *)data;
 111
 112    if (attribute == xvBrightness) {
 113       if ((value < -128) || (value > 127))
 114          return BadValue;
 115       priv->brightness = value;
 116    } else if (attribute == xvContrast) {
 117       if ((value < 0) || (value > 255))
 118          return BadValue;
 119       priv->contrast = value;
 120    } else
 121       return BadMatch;
 122
 123    return Success;
 124 }
 125
 126 static int
 127 get_port_attribute(ScrnInfoPtr pScrn,
 128                    Atom attribute, INT32 * value, pointer data)
 129 {
 130    struct xorg_xv_port_priv *priv = (struct xorg_xv_port_priv *)data;
 131
 132    if (attribute == xvBrightness)
 133       *value = priv->brightness;
 134    else if (attribute == xvContrast)
 135       *value = priv->contrast;
 136    else
 137       return BadMatch;
 138
 139    return Success;
 140 }
 141
 142 static void
 143 query_best_size(ScrnInfoPtr pScrn,
 144                 Bool motion,
 145                 short vid_w, short vid_h,
 146                 short drw_w, short drw_h,
 147                 unsigned int *p_w, unsigned int *p_h, pointer data)
 148 {
 149    if (vid_w > (drw_w << 1))
 150       drw_w = vid_w >> 1;
 151    if (vid_h > (drw_h << 1))
 152       drw_h = vid_h >> 1;
 153
 154    *p_w = drw_w;
 155    *p_h = drw_h;
 156 }
 157
 158 static INLINE struct pipe_texture *
 159 create_component_texture(struct pipe_context *pipe,
 160                          int width, int height)
 161 {
 162    struct pipe_screen *screen = pipe->screen;
 163    struct pipe_texture *tex = 0;
 164    struct pipe_texture templ;
 165
 166    memset(&templ, 0, sizeof(templ));
 167    templ.target = PIPE_TEXTURE_2D;
 168    templ.format = PIPE_FORMAT_L8_UNORM;
 169    templ.last_level = 0;
 170    templ.width0 = width;
 171    templ.height0 = height;
 172    templ.depth0 = 1;
 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]->width0 != width ||
 186        dst[0]->height0 != height) {
 187       pipe_texture_reference(&dst[0], NULL);
 188    }
 189    if (!dst[1] ||
 190        dst[1]->width0 != width ||
 191        dst[1]->height0 != height) {
 192       pipe_texture_reference(&dst[1], NULL);
 193    }
 194    if (!dst[2] ||
 195        dst[2]->width0 != width ||
 196        dst[2]->height0 != 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 int
 216 query_image_attributes(ScrnInfoPtr pScrn,
 217                        int id,
 218                        unsigned short *w, unsigned short *h,
 219                        int *pitches, int *offsets)
 220 {
 221    int size, tmp;
 222
 223    if (*w > IMAGE_MAX_WIDTH)
 224       *w = IMAGE_MAX_WIDTH;
 225    if (*h > IMAGE_MAX_HEIGHT)
 226       *h = IMAGE_MAX_HEIGHT;
 227
 228    *w = (*w + 1) & ~1;
 229    if (offsets)
 230       offsets[0] = 0;
 231
 232    switch (id) {
 233    case FOURCC_YV12:
 234       *h = (*h + 1) & ~1;
 235       size = (*w + 3) & ~3;
 236       if (pitches) {
 237          pitches[0] = size;
 238       }
 239       size *= *h;
 240       if (offsets) {
 241          offsets[1] = size;
 242       }
 243       tmp = ((*w >> 1) + 3) & ~3;
 244       if (pitches) {
 245          pitches[1] = pitches[2] = tmp;
 246       }
 247       tmp *= (*h >> 1);
 248       size += tmp;
 249       if (offsets) {
 250          offsets[2] = size;
 251       }
 252       size += tmp;
 253       break;
 254    case FOURCC_UYVY:
 255    case FOURCC_YUY2:
 256    default:
 257       size = *w << 1;
 258       if (pitches)
 259          pitches[0] = size;
 260       size *= *h;
 261       break;
 262    }
 263
 264    return size;
 265 }
 266
 267 static void
 268 copy_packed_data(ScrnInfoPtr pScrn,
 269                  struct xorg_xv_port_priv *port,
 270                  int id,
 271                  unsigned char *buf,
 272                  int left,
 273                  int top,
 274                  unsigned short w, unsigned short h)
 275 {
 276    int i, j;
 277    struct pipe_texture **dst = port->yuv[port->current_set];
 278    struct pipe_transfer *ytrans, *utrans, *vtrans;
 279    struct pipe_screen *screen = port->r->pipe->screen;
 280    char *ymap, *vmap, *umap;
 281    unsigned char y1, y2, u, v;
 282    int yidx, uidx, vidx;
 283    int y_array_size = w * h;
 284
 285    ytrans = screen->get_tex_transfer(screen, dst[0],
 286                                      0, 0, 0,
 287                                      PIPE_TRANSFER_WRITE,
 288                                      left, top, w, h);
 289    utrans = screen->get_tex_transfer(screen, dst[1],
 290                                      0, 0, 0,
 291                                      PIPE_TRANSFER_WRITE,
 292                                      left, top, w, h);
 293    vtrans = screen->get_tex_transfer(screen, dst[2],
 294                                      0, 0, 0,
 295                                      PIPE_TRANSFER_WRITE,
 296                                      left, top, w, h);
 297
 298    ymap = (char*)screen->transfer_map(screen, ytrans);
 299    umap = (char*)screen->transfer_map(screen, utrans);
 300    vmap = (char*)screen->transfer_map(screen, vtrans);
 301
 302    yidx = uidx = vidx = 0;
 303
 304    switch (id) {
 305    case FOURCC_YV12: {
 306       int pitches[3], offsets[3];
 307       unsigned char *y, *u, *v;
 308       query_image_attributes(pScrn, FOURCC_YV12,
 309                              &w, &h, pitches, offsets);
 310
 311       y = buf + offsets[0];
 312       v = buf + offsets[1];
 313       u = buf + offsets[2];
 314       for (i = 0; i < h; ++i) {
 315          for (j = 0; j < w; ++j) {
 316             int yoffset = (w*i+j);
 317             int ii = (i|1), jj = (j|1);
 318             int vuoffset = (w/2)*(ii/2) + (jj/2);
 319             ymap[yidx++] = y[yoffset];
 320             umap[uidx++] = u[vuoffset];
 321             vmap[vidx++] = v[vuoffset];
 322          }
 323       }
 324    }
 325       break;
 326    case FOURCC_UYVY:
 327       for (i = 0; i < y_array_size; i +=2 ) {
 328          /* extracting two pixels */
 329          u  = buf[0];
 330          y1 = buf[1];
 331          v  = buf[2];
 332          y2 = buf[3];
 333          buf += 4;
 334
 335          ymap[yidx++] = y1;
 336          ymap[yidx++] = y2;
 337          umap[uidx++] = u;
 338          umap[uidx++] = u;
 339          vmap[vidx++] = v;
 340          vmap[vidx++] = v;
 341       }
 342       break;
 343    case FOURCC_YUY2:
 344       for (i = 0; i < y_array_size; i +=2 ) {
 345          /* extracting two pixels */
 346          y1 = buf[0];
 347          u  = buf[1];
 348          y2 = buf[2];
 349          v  = buf[3];
 350
 351          buf += 4;
 352
 353          ymap[yidx++] = y1;
 354          ymap[yidx++] = y2;
 355          umap[uidx++] = u;
 356          umap[uidx++] = u;
 357          vmap[vidx++] = v;
 358          vmap[vidx++] = v;
 359       }
 360       break;
 361    default:
 362       debug_assert(!"Unsupported yuv format!");
 363       break;
 364    }
 365
 366    screen->transfer_unmap(screen, ytrans);
 367    screen->transfer_unmap(screen, utrans);
 368    screen->transfer_unmap(screen, vtrans);
 369    screen->tex_transfer_destroy(ytrans);
 370    screen->tex_transfer_destroy(utrans);
 371    screen->tex_transfer_destroy(vtrans);
 372 }
 373
 374
 375 static void
 376 setup_fs_video_constants(struct xorg_renderer *r, boolean hdtv)
 377 {
 378    const int param_bytes = 12 * sizeof(float);
 379    const float *video_constants = (hdtv) ? bt_709 : bt_601;
 380
 381    renderer_set_constants(r, PIPE_SHADER_FRAGMENT,
 382                           video_constants, param_bytes);
 383 }
 384
 385 static void
 386 draw_yuv(struct xorg_xv_port_priv *port,
 387          int src_x, int src_y, int src_w, int src_h,
 388          int dst_x, int dst_y, int dst_w, int dst_h)
 389 {
 390    struct pipe_texture **textures = port->yuv[port->current_set];
 391
 392    renderer_draw_yuv(port->r,
 393                      src_x, src_y, src_w, src_h,
 394                      dst_x, dst_y, dst_w, dst_h,
 395                      textures);
 396 }
 397
 398 static void
 399 bind_blend_state(struct xorg_xv_port_priv *port)
 400 {
 401    struct pipe_blend_state blend;
 402
 403    memset(&blend, 0, sizeof(struct pipe_blend_state));
 404    blend.blend_enable = 1;
 405    blend.colormask |= PIPE_MASK_RGBA;
 406
 407    /* porter&duff src */
 408    blend.rgb_src_factor   = PIPE_BLENDFACTOR_ONE;
 409    blend.alpha_src_factor = PIPE_BLENDFACTOR_ONE;
 410    blend.rgb_dst_factor   = PIPE_BLENDFACTOR_ZERO;
 411    blend.alpha_dst_factor = PIPE_BLENDFACTOR_ZERO;
 412
 413    cso_set_blend(port->r->cso, &blend);
 414 }
 415
 416
 417 static void
 418 bind_shaders(struct xorg_xv_port_priv *port)
 419 {
 420    unsigned vs_traits = 0, fs_traits = 0;
 421    struct xorg_shader shader;
 422
 423    vs_traits |= VS_YUV;
 424    fs_traits |= FS_YUV;
 425
 426    shader = xorg_shaders_get(port->r->shaders, vs_traits, fs_traits);
 427    cso_set_vertex_shader_handle(port->r->cso, shader.vs);
 428    cso_set_fragment_shader_handle(port->r->cso, shader.fs);
 429 }
 430
 431 static INLINE void
 432 conditional_flush(struct pipe_context *pipe, struct pipe_texture **tex,
 433                   int num)
 434 {
 435    int i;
 436    for (i = 0; i < num; ++i) {
 437       if (tex[i] && pipe->is_texture_referenced(pipe, tex[i], 0, 0) &
 438           PIPE_REFERENCED_FOR_WRITE) {
 439          pipe->flush(pipe, PIPE_FLUSH_RENDER_CACHE, NULL);
 440          return;
 441       }
 442    }
 443 }
 444
 445 static void
 446 bind_samplers(struct xorg_xv_port_priv *port)
 447 {
 448    struct pipe_sampler_state *samplers[PIPE_MAX_SAMPLERS];
 449    struct pipe_sampler_state sampler;
 450    struct pipe_texture **dst = port->yuv[port->current_set];
 451
 452    memset(&sampler, 0, sizeof(struct pipe_sampler_state));
 453
 454    conditional_flush(port->r->pipe, dst, 3);
 455
 456    sampler.wrap_s = PIPE_TEX_WRAP_CLAMP;
 457    sampler.wrap_t = PIPE_TEX_WRAP_CLAMP;
 458    sampler.min_img_filter = PIPE_TEX_FILTER_LINEAR;
 459    sampler.mag_img_filter = PIPE_TEX_FILTER_LINEAR;
 460    sampler.min_mip_filter = PIPE_TEX_MIPFILTER_NEAREST;
 461    sampler.normalized_coords = 1;
 462
 463    samplers[0] = &sampler;
 464    samplers[1] = &sampler;
 465    samplers[2] = &sampler;
 466
 467
 468    cso_set_samplers(port->r->cso, 3,
 469                     (const struct pipe_sampler_state **)samplers);
 470    cso_set_sampler_textures(port->r->cso, 3,
 471                             dst);
 472 }
 473
 474 static int
 475 display_video(ScrnInfoPtr pScrn, struct xorg_xv_port_priv *pPriv, int id,
 476               RegionPtr dstRegion,
 477               int src_x, int src_y, int src_w, int src_h,
 478               int dstX, int dstY, int dst_w, int dst_h,
 479               PixmapPtr pPixmap)
 480 {
 481    modesettingPtr ms = modesettingPTR(pScrn);
 482    BoxPtr pbox;
 483    int nbox;
 484    int dxo, dyo;
 485    Bool hdtv;
 486    int x, y, w, h;
 487    struct exa_pixmap_priv *dst = exaGetPixmapDriverPrivate(pPixmap);
 488    struct pipe_surface *dst_surf = xorg_gpu_surface(pPriv->r->pipe->screen, dst);
 489
 490    if (dst && !dst->tex) {
 491         xorg_exa_set_shared_usage(pPixmap);
 492         pScrn->pScreen->ModifyPixmapHeader(pPixmap, 0, 0, 0, 0, 0, NULL);
 493    }
 494
 495    if (!dst || !dst->tex)
 496       XORG_FALLBACK("Xv destination %s", !dst ? "!dst" : "!dst->tex");
 497
 498    hdtv = ((src_w >= RES_720P_X) && (src_h >= RES_720P_Y));
 499
 500    REGION_TRANSLATE(pScrn->pScreen, dstRegion, -pPixmap->screen_x,
 501                     -pPixmap->screen_y);
 502
 503    dxo = dstRegion->extents.x1;
 504    dyo = dstRegion->extents.y1;
 505
 506    pbox = REGION_RECTS(dstRegion);
 507    nbox = REGION_NUM_RECTS(dstRegion);
 508
 509    renderer_bind_destination(pPriv->r, dst_surf,
 510                              dst_surf->width, dst_surf->height);
 511
 512    bind_blend_state(pPriv);
 513    bind_shaders(pPriv);
 514    bind_samplers(pPriv);
 515    setup_fs_video_constants(pPriv->r, hdtv);
 516
 517    exaMoveInPixmap(pPixmap);
 518    DamageDamageRegion(&pPixmap->drawable, dstRegion);
 519
 520    while (nbox--) {
 521       int box_x1 = pbox->x1;
 522       int box_y1 = pbox->y1;
 523       int box_x2 = pbox->x2;
 524       int box_y2 = pbox->y2;
 525       float diff_x = (float)src_w / (float)dst_w;
 526       float diff_y = (float)src_h / (float)dst_h;
 527       int offset_x = box_x1 - dstX + pPixmap->screen_x;
 528       int offset_y = box_y1 - dstY + pPixmap->screen_y;
 529       int offset_w;
 530       int offset_h;
 531
 532       x = box_x1;
 533       y = box_y1;
 534       w = box_x2 - box_x1;
 535       h = box_y2 - box_y1;
 536
 537       offset_w = dst_w - w;
 538       offset_h = dst_h - h;
 539
 540       draw_yuv(pPriv, src_x + offset_x*diff_x, src_y + offset_y*diff_y,
 541                src_w - offset_w*diff_x, src_h - offset_h*diff_x,
 542                x, y, w, h);
 543
 544       pbox++;
 545    }
 546    DamageRegionProcessPending(&pPixmap->drawable);
 547
 548    pipe_surface_reference(&dst_surf, NULL);
 549
 550    return TRUE;
 551 }
 552
 553 static int
 554 put_image(ScrnInfoPtr pScrn,
 555           short src_x, short src_y,
 556           short drw_x, short drw_y,
 557           short src_w, short src_h,
 558           short drw_w, short drw_h,
 559           int id, unsigned char *buf,
 560           short width, short height,
 561           Bool sync, RegionPtr clipBoxes, pointer data,
 562           DrawablePtr pDraw)
 563 {
 564    struct xorg_xv_port_priv *pPriv = (struct xorg_xv_port_priv *) data;
 565    ScreenPtr pScreen = screenInfo.screens[pScrn->scrnIndex];
 566    PixmapPtr pPixmap;
 567    INT32 x1, x2, y1, y2;
 568    BoxRec dstBox;
 569    int ret;
 570
 571    /* Clip */
 572    x1 = src_x;
 573    x2 = src_x + src_w;
 574    y1 = src_y;
 575    y2 = src_y + src_h;
 576
 577    dstBox.x1 = drw_x;
 578    dstBox.x2 = drw_x + drw_w;
 579    dstBox.y1 = drw_y;
 580    dstBox.y2 = drw_y + drw_h;
 581
 582    if (!xf86XVClipVideoHelper(&dstBox, &x1, &x2, &y1, &y2, clipBoxes,
 583                               width, height))
 584       return Success;
 585
 586    ret = check_yuv_textures(pPriv, width, height);
 587
 588    if (ret)
 589       return ret;
 590
 591    copy_packed_data(pScrn, pPriv, id, buf,
 592                     src_x, src_y, width, height);
 593
 594    if (pDraw->type == DRAWABLE_WINDOW) {
 595       pPixmap = (*pScreen->GetWindowPixmap)((WindowPtr)pDraw);
 596    } else {
 597       pPixmap = (PixmapPtr)pDraw;
 598    }
 599
 600    display_video(pScrn, pPriv, id, clipBoxes,
 601                  src_x, src_y, src_w, src_h,
 602                  drw_x, drw_y,
 603                  drw_w, drw_h, pPixmap);
 604
 605    pPriv->current_set = (pPriv->current_set + 1) & 1;
 606    return Success;
 607 }
 608
 609 static struct xorg_xv_port_priv *
 610 port_priv_create(struct xorg_renderer *r)
 611 {
 612    struct xorg_xv_port_priv *priv = NULL;
 613
 614    priv = calloc(1, sizeof(struct xorg_xv_port_priv));
 615
 616    if (!priv)
 617       return NULL;
 618
 619    priv->r = r;
 620
 621    REGION_NULL(pScreen, &priv->clip);
 622
 623    debug_assert(priv && priv->r);
 624
 625    return priv;
 626 }
 627
 628 static XF86VideoAdaptorPtr
 629 xorg_setup_textured_adapter(ScreenPtr pScreen)
 630 {
 631    ScrnInfoPtr pScrn = xf86Screens[pScreen->myNum];
 632    modesettingPtr ms = modesettingPTR(pScrn);
 633    XF86VideoAdaptorPtr adapt;
 634    XF86AttributePtr attrs;
 635    DevUnion *dev_unions;
 636    int nports = 16, i;
 637    int nattributes;
 638
 639    nattributes = NUM_TEXTURED_ATTRIBUTES;
 640
 641    debug_assert(ms->exa);
 642    debug_assert(ms->exa->renderer);
 643
 644    adapt = calloc(1, sizeof(XF86VideoAdaptorRec));
 645    dev_unions = calloc(nports, sizeof(DevUnion));
 646    attrs = calloc(nattributes, sizeof(XF86AttributeRec));
 647    if (adapt == NULL || dev_unions == NULL || attrs == NULL) {
 648       free(adapt);
 649       free(dev_unions);
 650       free(attrs);
 651       return NULL;
 652    }
 653
 654    adapt->type = XvWindowMask | XvInputMask | XvImageMask;
 655    adapt->flags = 0;
 656    adapt->name = "Gallium3D Textured Video";
 657    adapt->nEncodings = 1;
 658    adapt->pEncodings = DummyEncoding;
 659    adapt->nFormats = NUM_FORMATS;
 660    adapt->pFormats = Formats;
 661    adapt->nPorts = 0;
 662    adapt->pPortPrivates = dev_unions;
 663    adapt->nAttributes = nattributes;
 664    adapt->pAttributes = attrs;
 665    memcpy(attrs, TexturedAttributes, nattributes * sizeof(XF86AttributeRec));
 666    adapt->nImages = NUM_IMAGES;
 667    adapt->pImages = Images;
 668    adapt->PutVideo = NULL;
 669    adapt->PutStill = NULL;
 670    adapt->GetVideo = NULL;
 671    adapt->GetStill = NULL;
 672    adapt->StopVideo = stop_video;
 673    adapt->SetPortAttribute = set_port_attribute;
 674    adapt->GetPortAttribute = get_port_attribute;
 675    adapt->QueryBestSize = query_best_size;
 676    adapt->PutImage = put_image;
 677    adapt->QueryImageAttributes = query_image_attributes;
 678
 679    for (i = 0; i < nports; i++) {
 680       struct xorg_xv_port_priv *priv =
 681          port_priv_create(ms->exa->renderer);
 682
 683       adapt->pPortPrivates[i].ptr = (pointer) (priv);
 684       adapt->nPorts++;
 685    }
 686
 687    return adapt;
 688 }
 689
 690 void
 691 xorg_xv_init(ScreenPtr pScreen)
 692 {
 693    ScrnInfoPtr pScrn = xf86Screens[pScreen->myNum];
 694    /*modesettingPtr ms = modesettingPTR(pScrn);*/
 695    XF86VideoAdaptorPtr *adaptors, *new_adaptors = NULL;
 696    XF86VideoAdaptorPtr textured_adapter;
 697    int num_adaptors;
 698
 699    num_adaptors = xf86XVListGenericAdaptors(pScrn, &adaptors);
 700    new_adaptors = malloc((num_adaptors + 1) * sizeof(XF86VideoAdaptorPtr *));
 701    if (new_adaptors == NULL)
 702       return;
 703
 704    memcpy(new_adaptors, adaptors, num_adaptors * sizeof(XF86VideoAdaptorPtr));
 705    adaptors = new_adaptors;
 706
 707    /* Add the adaptors supported by our hardware.  First, set up the atoms
 708     * that will be used by both output adaptors.
 709     */
 710    xvBrightness = MAKE_ATOM("XV_BRIGHTNESS");
 711    xvContrast = MAKE_ATOM("XV_CONTRAST");
 712
 713    textured_adapter = xorg_setup_textured_adapter(pScreen);
 714
 715    debug_assert(textured_adapter);
 716
 717    if (textured_adapter) {
 718       adaptors[num_adaptors++] = textured_adapter;
 719    }
 720
 721    if (num_adaptors) {
 722       xf86XVScreenInit(pScreen, adaptors, num_adaptors);
 723    } else {
 724       xf86DrvMsg(pScrn->scrnIndex, X_WARNING,
 725                  "Disabling Xv because no adaptors could be initialized.\n");
 726    }
 727
 728    free(adaptors);
 729 }