gst-libs/gst/vaapi/gstvaapiimage.c

   1 /*
   2  *  gstvaapiimage.c - VA image abstraction
   3  *
   4  *  gstreamer-vaapi (C) 2010 Splitted-Desktop Systems
   5  *
   6  *  This program is free software; you can redistribute it and/or modify
   7  *  it under the terms of the GNU General Public License as published by
   8  *  the Free Software Foundation; either version 2 of the License, or
   9  *  (at your option) any later version.
  10  *
  11  *  This program is distributed in the hope that it will be useful,
  12  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  *  GNU General Public License for more details.
  15  *
  16  *  You should have received a copy of the GNU General Public License
  17  *  along with this program; if not, write to the Free Software
  18  *  Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA
  19  */
  20
  21 #include "config.h"
  22 #include <string.h>
  23 #include "gstvaapiutils.h"
  24 #include "gstvaapiimage.h"
  25 #include <va/va_backend.h>
  26
  27 #define DEBUG 1
  28 #include "gstvaapidebug.h"
  29
  30 G_DEFINE_TYPE(GstVaapiImage, gst_vaapi_image, G_TYPE_OBJECT);
  31
  32 #define GST_VAAPI_IMAGE_GET_PRIVATE(obj)                \
  33     (G_TYPE_INSTANCE_GET_PRIVATE((obj),                 \
  34                                  GST_VAAPI_TYPE_IMAGE,  \
  35                                  GstVaapiImagePrivate))
  36
  37 struct _GstVaapiImagePrivate {
  38     GstVaapiDisplay    *display;
  39     VAImage             internal_image;
  40     VAImage             image;
  41     guchar             *image_data;
  42     GstVaapiImageFormat internal_format;
  43     GstVaapiImageFormat format;
  44     guint               width;
  45     guint               height;
  46     guint               is_constructed  : 1;
  47     guint               is_linear       : 1;
  48 };
  49
  50 enum {
  51     PROP_0,
  52
  53     PROP_DISPLAY,
  54     PROP_IMAGE_ID,
  55     PROP_FORMAT,
  56     PROP_WIDTH,
  57     PROP_HEIGHT
  58 };
  59
  60 #define SWAP_UINT(a, b) do { \
  61         unsigned int v = a;  \
  62         a = b;               \
  63         b = v;               \
  64     } while (0)
  65
  66 static void
  67 gst_vaapi_image_destroy(GstVaapiImage *image)
  68 {
  69     GstVaapiImagePrivate * const priv = image->priv;
  70     VAStatus status;
  71
  72     gst_vaapi_image_unmap(image);
  73
  74     if (priv->internal_image.image_id != VA_INVALID_ID) {
  75         GST_VAAPI_DISPLAY_LOCK(priv->display);
  76         status = vaDestroyImage(
  77             GST_VAAPI_DISPLAY_VADISPLAY(priv->display),
  78             priv->internal_image.image_id
  79         );
  80         GST_VAAPI_DISPLAY_UNLOCK(priv->display);
  81         if (!vaapi_check_status(status, "vaDestroyImage()"))
  82             g_warning("failed to destroy image 0x%08x\n",
  83                       priv->internal_image.image_id);
  84         priv->internal_image.image_id = VA_INVALID_ID;
  85     }
  86
  87     if (priv->display) {
  88         g_object_unref(priv->display);
  89         priv->display = NULL;
  90     }
  91 }
  92
  93 static gboolean
  94 _gst_vaapi_image_create(GstVaapiImage *image, GstVaapiImageFormat format)
  95 {
  96     GstVaapiImagePrivate * const priv = image->priv;
  97     const VAImageFormat *va_format;
  98     VAStatus status;
  99
 100     if (!gst_vaapi_display_has_image_format(priv->display, format))
 101         return FALSE;
 102
 103     va_format = gst_vaapi_image_format_get_va_format(format);
 104     if (!va_format)
 105         return FALSE;
 106
 107     GST_VAAPI_DISPLAY_LOCK(priv->display);
 108     status = vaCreateImage(
 109         GST_VAAPI_DISPLAY_VADISPLAY(priv->display),
 110         (VAImageFormat *)va_format,
 111         priv->width,
 112         priv->height,
 113         &priv->internal_image
 114     );
 115     GST_VAAPI_DISPLAY_UNLOCK(priv->display);
 116     if (status != VA_STATUS_SUCCESS ||
 117         priv->internal_image.format.fourcc != va_format->fourcc)
 118         return FALSE;
 119
 120     priv->internal_format = format;
 121     return TRUE;
 122 }
 123
 124 static gboolean
 125 _gst_vaapi_image_is_linear(GstVaapiImage *image)
 126 {
 127     GstVaapiImagePrivate * const priv = image->priv;
 128     guint i, width, height, width2, height2, data_size;
 129
 130     for (i = 1; i < priv->image.num_planes; i++)
 131         if (priv->image.offsets[i] < priv->image.offsets[i - 1])
 132             return FALSE;
 133
 134     width   = priv->width;
 135     height  = priv->height;
 136     width2  = (width  + 1) / 2;
 137     height2 = (height + 1) / 2;
 138
 139     switch (priv->internal_format) {
 140     case GST_VAAPI_IMAGE_NV12:
 141     case GST_VAAPI_IMAGE_YV12:
 142     case GST_VAAPI_IMAGE_I420:
 143         data_size = width * height + 2 * width2 * height2;
 144         break;
 145     case GST_VAAPI_IMAGE_ARGB:
 146     case GST_VAAPI_IMAGE_RGBA:
 147     case GST_VAAPI_IMAGE_ABGR:
 148     case GST_VAAPI_IMAGE_BGRA:
 149         data_size = 4 * width * height;
 150         break;
 151     default:
 152         g_error("FIXME: incomplete formats");
 153         break;
 154     }
 155     return priv->image.data_size == data_size;
 156 }
 157
 158 static gboolean
 159 gst_vaapi_image_create(GstVaapiImage *image)
 160 {
 161     GstVaapiImagePrivate * const priv = image->priv;
 162     GstVaapiImageFormat format = priv->format;
 163     const VAImageFormat *va_format;
 164
 165     if (!_gst_vaapi_image_create(image, format)) {
 166         switch (format) {
 167         case GST_VAAPI_IMAGE_I420:
 168             format = GST_VAAPI_IMAGE_YV12;
 169             break;
 170         case GST_VAAPI_IMAGE_YV12:
 171             format = GST_VAAPI_IMAGE_I420;
 172             break;
 173         default:
 174             format = 0;
 175             break;
 176         }
 177         if (!format || !_gst_vaapi_image_create(image, format))
 178             return FALSE;
 179     }
 180     priv->image = priv->internal_image;
 181
 182     if (priv->format != priv->internal_format) {
 183         switch (priv->format) {
 184         case GST_VAAPI_IMAGE_YV12:
 185         case GST_VAAPI_IMAGE_I420:
 186             va_format = gst_vaapi_image_format_get_va_format(priv->format);
 187             if (!va_format)
 188                 return FALSE;
 189             priv->image.format = *va_format;
 190             SWAP_UINT(priv->image.offsets[1], priv->image.offsets[2]);
 191             SWAP_UINT(priv->image.pitches[1], priv->image.pitches[2]);
 192             break;
 193         default:
 194             break;
 195         }
 196     }
 197
 198     GST_DEBUG("image 0x%08x", priv->image.image_id);
 199     priv->is_linear = _gst_vaapi_image_is_linear(image);
 200     return TRUE;
 201 }
 202
 203 static void
 204 gst_vaapi_image_finalize(GObject *object)
 205 {
 206     gst_vaapi_image_destroy(GST_VAAPI_IMAGE(object));
 207
 208     G_OBJECT_CLASS(gst_vaapi_image_parent_class)->finalize(object);
 209 }
 210
 211 static void
 212 gst_vaapi_image_set_property(
 213     GObject      *object,
 214     guint         prop_id,
 215     const GValue *value,
 216     GParamSpec   *pspec
 217 )
 218 {
 219     GstVaapiImage        * const image = GST_VAAPI_IMAGE(object);
 220     GstVaapiImagePrivate * const priv  = image->priv;
 221
 222     switch (prop_id) {
 223     case PROP_DISPLAY:
 224         priv->display = g_object_ref(g_value_get_object(value));
 225         break;
 226     case PROP_FORMAT:
 227         priv->format = g_value_get_uint(value);
 228         break;
 229     case PROP_WIDTH:
 230         priv->width = g_value_get_uint(value);
 231         break;
 232     case PROP_HEIGHT:
 233         priv->height = g_value_get_uint(value);
 234         break;
 235     default:
 236         G_OBJECT_WARN_INVALID_PROPERTY_ID(object, prop_id, pspec);
 237         break;
 238     }
 239 }
 240
 241 static void
 242 gst_vaapi_image_get_property(
 243     GObject    *object,
 244     guint       prop_id,
 245     GValue     *value,
 246     GParamSpec *pspec
 247 )
 248 {
 249     GstVaapiImage * const image = GST_VAAPI_IMAGE(object);
 250
 251     switch (prop_id) {
 252     case PROP_DISPLAY:
 253         g_value_set_pointer(value, gst_vaapi_image_get_display(image));
 254         break;
 255     case PROP_IMAGE_ID:
 256         g_value_set_uint(value, gst_vaapi_image_get_id(image));
 257         break;
 258     case PROP_FORMAT:
 259         g_value_set_uint(value, gst_vaapi_image_get_format(image));
 260         break;
 261     case PROP_WIDTH:
 262         g_value_set_uint(value, gst_vaapi_image_get_width(image));
 263         break;
 264     case PROP_HEIGHT:
 265         g_value_set_uint(value, gst_vaapi_image_get_height(image));
 266         break;
 267     default:
 268         G_OBJECT_WARN_INVALID_PROPERTY_ID(object, prop_id, pspec);
 269         break;
 270     }
 271 }
 272
 273 static void
 274 gst_vaapi_image_constructed(GObject *object)
 275 {
 276     GstVaapiImage * const image = GST_VAAPI_IMAGE(object);
 277     GObjectClass *parent_class;
 278
 279     image->priv->is_constructed = gst_vaapi_image_create(image);
 280
 281     parent_class = G_OBJECT_CLASS(gst_vaapi_image_parent_class);
 282     if (parent_class->constructed)
 283         parent_class->constructed(object);
 284 }
 285
 286 static void
 287 gst_vaapi_image_class_init(GstVaapiImageClass *klass)
 288 {
 289     GObjectClass * const object_class = G_OBJECT_CLASS(klass);
 290
 291     g_type_class_add_private(klass, sizeof(GstVaapiImagePrivate));
 292
 293     object_class->finalize     = gst_vaapi_image_finalize;
 294     object_class->set_property = gst_vaapi_image_set_property;
 295     object_class->get_property = gst_vaapi_image_get_property;
 296     object_class->constructed  = gst_vaapi_image_constructed;
 297
 298     g_object_class_install_property
 299         (object_class,
 300          PROP_DISPLAY,
 301          g_param_spec_object("display",
 302                              "display",
 303                              "GStreamer Va display",
 304                              GST_VAAPI_TYPE_DISPLAY,
 305                              G_PARAM_READWRITE|G_PARAM_CONSTRUCT_ONLY));
 306
 307     g_object_class_install_property
 308         (object_class,
 309          PROP_IMAGE_ID,
 310          g_param_spec_uint("id",
 311                            "VA image id",
 312                            "VA image id",
 313                            0, G_MAXUINT32, VA_INVALID_ID,
 314                            G_PARAM_READABLE));
 315
 316     g_object_class_install_property
 317         (object_class,
 318          PROP_WIDTH,
 319          g_param_spec_uint("width",
 320                            "width",
 321                            "Image width",
 322                            0, G_MAXUINT32, 0,
 323                            G_PARAM_READWRITE|G_PARAM_CONSTRUCT_ONLY));
 324
 325     g_object_class_install_property
 326         (object_class,
 327          PROP_HEIGHT,
 328          g_param_spec_uint("height",
 329                            "height",
 330                            "Image height",
 331                            0, G_MAXUINT32, 0,
 332                            G_PARAM_READWRITE|G_PARAM_CONSTRUCT_ONLY));
 333
 334     g_object_class_install_property
 335         (object_class,
 336          PROP_FORMAT,
 337          g_param_spec_uint("format",
 338                            "format",
 339                            "Image format",
 340                            0, G_MAXUINT32, 0,
 341                            G_PARAM_READWRITE|G_PARAM_CONSTRUCT_ONLY));
 342 }
 343
 344 static void
 345 gst_vaapi_image_init(GstVaapiImage *image)
 346 {
 347     GstVaapiImagePrivate *priv = GST_VAAPI_IMAGE_GET_PRIVATE(image);
 348
 349     image->priv                   = priv;
 350     priv->display                 = NULL;
 351     priv->image_data              = NULL;
 352     priv->width                   = 0;
 353     priv->height                  = 0;
 354     priv->internal_format         = 0;
 355     priv->format                  = 0;
 356     priv->is_constructed          = FALSE;
 357     priv->is_linear               = FALSE;
 358
 359     memset(&priv->internal_image, 0, sizeof(priv->internal_image));
 360     priv->internal_image.image_id = VA_INVALID_ID;
 361     priv->internal_image.buf      = VA_INVALID_ID;
 362
 363     memset(&priv->image, 0, sizeof(priv->image));
 364     priv->image.image_id          = VA_INVALID_ID;
 365     priv->image.buf               = VA_INVALID_ID;
 366 }
 367
 368 GstVaapiImage *
 369 gst_vaapi_image_new(
 370     GstVaapiDisplay    *display,
 371     GstVaapiImageFormat format,
 372     guint               width,
 373     guint               height
 374 )
 375 {
 376     g_return_val_if_fail(GST_VAAPI_IS_DISPLAY(display), NULL);
 377     g_return_val_if_fail(width > 0, NULL);
 378     g_return_val_if_fail(height > 0, NULL);
 379
 380     GST_DEBUG("format %" GST_FOURCC_FORMAT ", size %ux%u",
 381               GST_FOURCC_ARGS(format), width, height);
 382
 383     return g_object_new(GST_VAAPI_TYPE_IMAGE,
 384                         "display", display,
 385                         "format",  format,
 386                         "width",   width,
 387                         "height",  height,
 388                         NULL);
 389 }
 390
 391 VAImageID
 392 gst_vaapi_image_get_id(GstVaapiImage *image)
 393 {
 394     g_return_val_if_fail(GST_VAAPI_IS_IMAGE(image), VA_INVALID_ID);
 395     g_return_val_if_fail(image->priv->is_constructed, VA_INVALID_ID);
 396
 397     return image->priv->image.image_id;
 398 }
 399
 400 gboolean
 401 gst_vaapi_image_get_image(GstVaapiImage *image, VAImage *va_image)
 402 {
 403     g_return_val_if_fail(GST_VAAPI_IS_IMAGE(image), FALSE);
 404     g_return_val_if_fail(image->priv->is_constructed, FALSE);
 405
 406     if (va_image)
 407         *va_image = image->priv->image;
 408
 409     return TRUE;
 410 }
 411
 412 GstVaapiDisplay *
 413 gst_vaapi_image_get_display(GstVaapiImage *image)
 414 {
 415     g_return_val_if_fail(GST_VAAPI_IS_IMAGE(image), NULL);
 416     g_return_val_if_fail(image->priv->is_constructed, FALSE);
 417
 418     return image->priv->display;
 419 }
 420
 421 GstVaapiImageFormat
 422 gst_vaapi_image_get_format(GstVaapiImage *image)
 423 {
 424     g_return_val_if_fail(GST_VAAPI_IS_IMAGE(image), 0);
 425     g_return_val_if_fail(image->priv->is_constructed, FALSE);
 426
 427     return image->priv->format;
 428 }
 429
 430 guint
 431 gst_vaapi_image_get_width(GstVaapiImage *image)
 432 {
 433     g_return_val_if_fail(GST_VAAPI_IS_IMAGE(image), 0);
 434     g_return_val_if_fail(image->priv->is_constructed, FALSE);
 435
 436     return image->priv->width;
 437 }
 438
 439 guint
 440 gst_vaapi_image_get_height(GstVaapiImage *image)
 441 {
 442     g_return_val_if_fail(GST_VAAPI_IS_IMAGE(image), 0);
 443     g_return_val_if_fail(image->priv->is_constructed, FALSE);
 444
 445     return image->priv->height;
 446 }
 447
 448 void
 449 gst_vaapi_image_get_size(GstVaapiImage *image, guint *pwidth, guint *pheight)
 450 {
 451     g_return_if_fail(GST_VAAPI_IS_IMAGE(image));
 452     g_return_if_fail(image->priv->is_constructed);
 453
 454     if (pwidth)
 455         *pwidth = image->priv->width;
 456
 457     if (pheight)
 458         *pheight = image->priv->height;
 459 }
 460
 461 gboolean
 462 gst_vaapi_image_is_linear(GstVaapiImage *image)
 463 {
 464     g_return_val_if_fail(GST_VAAPI_IS_IMAGE(image), FALSE);
 465     g_return_val_if_fail(image->priv->is_constructed, FALSE);
 466
 467     return image->priv->is_linear;
 468 }
 469
 470 static inline gboolean
 471 _gst_vaapi_image_is_mapped(GstVaapiImage *image)
 472 {
 473     return image->priv->image_data != NULL;
 474 }
 475
 476 gboolean
 477 gst_vaapi_image_is_mapped(GstVaapiImage *image)
 478 {
 479     g_return_val_if_fail(GST_VAAPI_IS_IMAGE(image), FALSE);
 480     g_return_val_if_fail(image->priv->is_constructed, FALSE);
 481
 482     return _gst_vaapi_image_is_mapped(image);
 483 }
 484
 485 gboolean
 486 gst_vaapi_image_map(GstVaapiImage *image)
 487 {
 488     void *image_data;
 489     VAStatus status;
 490
 491     g_return_val_if_fail(GST_VAAPI_IS_IMAGE(image), FALSE);
 492     g_return_val_if_fail(image->priv->is_constructed, FALSE);
 493
 494     if (_gst_vaapi_image_is_mapped(image))
 495         return TRUE;
 496
 497     GST_VAAPI_DISPLAY_LOCK(image->priv->display);
 498     status = vaMapBuffer(
 499         GST_VAAPI_DISPLAY_VADISPLAY(image->priv->display),
 500         image->priv->image.buf,
 501         &image_data
 502     );
 503     GST_VAAPI_DISPLAY_UNLOCK(image->priv->display);
 504     if (!vaapi_check_status(status, "vaMapBuffer()"))
 505         return FALSE;
 506
 507     image->priv->image_data = image_data;
 508     return TRUE;
 509 }
 510
 511 gboolean
 512 gst_vaapi_image_unmap(GstVaapiImage *image)
 513 {
 514     VAStatus status;
 515
 516     g_return_val_if_fail(GST_VAAPI_IS_IMAGE(image), FALSE);
 517     g_return_val_if_fail(image->priv->is_constructed, FALSE);
 518
 519     if (!_gst_vaapi_image_is_mapped(image))
 520         return FALSE;
 521
 522     GST_VAAPI_DISPLAY_LOCK(image->priv->display);
 523     status = vaUnmapBuffer(
 524         GST_VAAPI_DISPLAY_VADISPLAY(image->priv->display),
 525         image->priv->image.buf
 526     );
 527     GST_VAAPI_DISPLAY_UNLOCK(image->priv->display);
 528     if (!vaapi_check_status(status, "vaUnmapBuffer()"))
 529         return FALSE;
 530
 531     image->priv->image_data = NULL;
 532     return TRUE;
 533 }
 534
 535 guint
 536 gst_vaapi_image_get_plane_count(GstVaapiImage *image)
 537 {
 538     g_return_val_if_fail(GST_VAAPI_IS_IMAGE(image), 0);
 539     g_return_val_if_fail(image->priv->is_constructed, FALSE);
 540     g_return_val_if_fail(_gst_vaapi_image_is_mapped(image), 0);
 541
 542     return image->priv->image.num_planes;
 543 }
 544
 545 guchar *
 546 gst_vaapi_image_get_plane(GstVaapiImage *image, guint plane)
 547 {
 548     g_return_val_if_fail(GST_VAAPI_IS_IMAGE(image), NULL);
 549     g_return_val_if_fail(image->priv->is_constructed, FALSE);
 550     g_return_val_if_fail(_gst_vaapi_image_is_mapped(image), NULL);
 551     g_return_val_if_fail(plane < image->priv->image.num_planes, NULL);
 552
 553     return image->priv->image_data + image->priv->image.offsets[plane];
 554 }
 555
 556 guint
 557 gst_vaapi_image_get_pitch(GstVaapiImage *image, guint plane)
 558 {
 559     g_return_val_if_fail(GST_VAAPI_IS_IMAGE(image), 0);
 560     g_return_val_if_fail(image->priv->is_constructed, FALSE);
 561     g_return_val_if_fail(_gst_vaapi_image_is_mapped(image), 0);
 562     g_return_val_if_fail(plane < image->priv->image.num_planes, 0);
 563
 564     return image->priv->image.pitches[plane];
 565 }
 566
 567 guint
 568 gst_vaapi_image_get_data_size(GstVaapiImage *image)
 569 {
 570     g_return_val_if_fail(GST_VAAPI_IS_IMAGE(image), 0);
 571     g_return_val_if_fail(image->priv->is_constructed, FALSE);
 572
 573     return image->priv->image.data_size;
 574 }
 575
 576 gboolean
 577 gst_vaapi_image_update_from_buffer(GstVaapiImage *image, GstBuffer *buffer)
 578 {
 579     GstVaapiImagePrivate *priv;
 580     GstStructure *structure;
 581     GstCaps *caps;
 582     GstVaapiImageFormat format;
 583     gint width, height;
 584     guint offsets[3], pitches[3], widths[3], heights[3];
 585     guint i, j;
 586     guchar *data;
 587     guint32 data_size;
 588
 589     g_return_val_if_fail(GST_VAAPI_IS_IMAGE(image), FALSE);
 590     g_return_val_if_fail(image->priv->is_constructed, FALSE);
 591     g_return_val_if_fail(GST_IS_BUFFER(buffer), FALSE);
 592
 593     priv      = image->priv;
 594     data      = GST_BUFFER_DATA(buffer);
 595     data_size = GST_BUFFER_SIZE(buffer);
 596     caps      = GST_BUFFER_CAPS(buffer);
 597
 598     if (!caps)
 599         return FALSE;
 600
 601     format = gst_vaapi_image_format_from_caps(caps);
 602     if (format != priv->format)
 603         return FALSE;
 604
 605     structure = gst_caps_get_structure(caps, 0);
 606     gst_structure_get_int(structure, "width",  &width);
 607     gst_structure_get_int(structure, "height", &height);
 608     if (width != priv->width || height != priv->height)
 609         return FALSE;
 610
 611     if (!gst_vaapi_image_map(image))
 612         return FALSE;
 613
 614     if (priv->is_linear && data_size == priv->image.data_size)
 615         memcpy(priv->image_data, data, data_size);
 616     else {
 617         /* XXX: copied from gst_video_format_get_row_stride() -- no NV12? */
 618         const guint width2  = (width  + 1) / 2;
 619         const guint height2 = (height + 1) / 2;
 620         guint size2;
 621         switch (format) {
 622         case GST_VAAPI_IMAGE_NV12:
 623             offsets[0] = 0;
 624             pitches[0] = GST_ROUND_UP_4(width);
 625             widths [0] = width;
 626             heights[0] = height;
 627             offsets[1] = offsets[0] + height * pitches[0];
 628             pitches[1] = pitches[0];
 629             widths [1] = width2 * 2;
 630             heights[1] = height2;
 631             size2      = offsets[1] + height2 * pitches[1];
 632             break;
 633         case GST_VAAPI_IMAGE_YV12:
 634         case GST_VAAPI_IMAGE_I420:
 635             offsets[0] = 0;
 636             pitches[0] = GST_ROUND_UP_4(width);
 637             widths [0] = width;
 638             heights[0] = height;
 639             offsets[1] = offsets[0] + height * pitches[0];
 640             pitches[1] = GST_ROUND_UP_4(GST_ROUND_UP_2(width) / 2);
 641             widths [1] = width2;
 642             heights[1] = height2;
 643             offsets[2] = offsets[1] + height2 * pitches[1];
 644             pitches[2] = pitches[1];
 645             widths [2] = width2;
 646             heights[2] = height2;
 647             size2      = offsets[2] + height2 * pitches[2];
 648             break;
 649         case GST_VAAPI_IMAGE_ARGB:
 650         case GST_VAAPI_IMAGE_RGBA:
 651         case GST_VAAPI_IMAGE_ABGR:
 652         case GST_VAAPI_IMAGE_BGRA:
 653             offsets[0] = 0;
 654             pitches[0] = width * 4;
 655             widths [0] = width * 4;
 656             heights[0] = height;
 657             size2      = offsets[0] + height * pitches[0];
 658             break;
 659         default:
 660             g_error("could not compute row-stride for %" GST_FOURCC_FORMAT,
 661                     GST_FOURCC_ARGS(format));
 662             break;
 663         }
 664         if (size2 != data_size)
 665             g_error("data_size mismatch %d / %u", size2, data_size);
 666         for (i = 0; i < priv->image.num_planes; i++) {
 667             guchar *src = data + offsets[i];
 668             guchar *dst = priv->image_data + priv->image.offsets[i];
 669             for (j = 0; j < heights[i]; j++) {
 670                 memcpy(dst, src, widths[i]);
 671                 src += pitches[i];
 672                 dst += priv->image.pitches[i];
 673             }
 674         }
 675     }
 676
 677     if (!gst_vaapi_image_unmap(image))
 678         return FALSE;
 679
 680     return TRUE;
 681 }