subprojects/gst-plugins-bad/sys/va/gstvaav1dec.c

   1 /* GStreamer
   2  *  Copyright (C) 2020 Intel Corporation
   3  *     Author: He Junyan <junyan.he@intel.com>
   4  *
   5  * This library is free software; you can redistribute it and/or
   6  * modify it under the terms of the GNU Library General Public
   7  * License as published by the Free Software Foundation; either
   8  * version 2 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  * Library General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU Library General Public
  16  * License along with this library; if not, write to the0
  17  * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
  18  * Boston, MA 02110-1301, USA.
  19  */
  20
  21 /**
  22  * SECTION:element-vaav1dec
  23  * @title: vaav1dec
  24  * @short_description: A VA-API based AV1 video decoder
  25  *
  26  * vaav1dec decodes AV1 bitstreams to VA surfaces using the
  27  * installed and chosen [VA-API](https://01.org/linuxmedia/vaapi)
  28  * driver.
  29  *
  30  * The decoding surfaces can be mapped onto main memory as video
  31  * frames.
  32  *
  33  * ## Example launch line
  34  * ```
  35  * gst-launch-1.0 filesrc location=sample.av1 ! ivfparse ! av1parse ! vaav1dec ! autovideosink
  36  * ```
  37  *
  38  * Since: 1.20
  39  *
  40  */
  41
  42 #ifdef HAVE_CONFIG_H
  43 #include "config.h"
  44 #endif
  45
  46 #include <gst/va/gstva.h>
  47
  48 #include "gstvaav1dec.h"
  49 #include "gstvabasedec.h"
  50
  51 GST_DEBUG_CATEGORY_STATIC (gst_va_av1dec_debug);
  52 #ifndef GST_DISABLE_GST_DEBUG
  53 #define GST_CAT_DEFAULT gst_va_av1dec_debug
  54 #else
  55 #define GST_CAT_DEFAULT NULL
  56 #endif
  57
  58 #define GST_VA_AV1_DEC(obj)           ((GstVaAV1Dec *) obj)
  59 #define GST_VA_AV1_DEC_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj), G_TYPE_FROM_INSTANCE (obj), GstVaAV1DecClass))
  60 #define GST_VA_AV1_DEC_CLASS(klass)   ((GstVaAV1DecClass *) klass)
  61
  62 typedef struct _GstVaAV1Dec GstVaAV1Dec;
  63 typedef struct _GstVaAV1DecClass GstVaAV1DecClass;
  64
  65 struct _GstVaAV1DecClass
  66 {
  67   GstVaBaseDecClass parent_class;
  68 };
  69
  70 struct _GstVaAV1Dec
  71 {
  72   GstVaBaseDec parent;
  73
  74   GstAV1SequenceHeaderOBU seq;
  75   GstVideoFormat preferred_format;
  76   /* Used for layers not output. */
  77   GstBufferPool *internal_pool;
  78 };
  79
  80 static GstElementClass *parent_class = NULL;
  81
  82 /* *INDENT-OFF* */
  83 static const gchar *src_caps_str =
  84     GST_VIDEO_CAPS_MAKE_WITH_FEATURES (GST_CAPS_FEATURE_MEMORY_VA,
  85         "{ NV12, P010_10LE }") " ;"
  86     GST_VIDEO_CAPS_MAKE ("{ NV12, P010_10LE }");
  87 /* *INDENT-ON* */
  88
  89 static const gchar *sink_caps_str = "video/x-av1";
  90
  91 static gboolean
  92 gst_va_av1_dec_negotiate (GstVideoDecoder * decoder)
  93 {
  94   GstVaAV1Dec *self = GST_VA_AV1_DEC (decoder);
  95   GstVaBaseDec *base = GST_VA_BASE_DEC (decoder);
  96
  97   /* Ignore downstream renegotiation request. */
  98   if (!base->need_negotiation)
  99     return TRUE;
 100
 101   base->need_negotiation = FALSE;
 102
 103   /* Do not re-create the context if only the frame size changes */
 104   if (!gst_va_decoder_config_is_equal (base->decoder, base->profile,
 105           base->rt_format, base->width, base->height)) {
 106     if (gst_va_decoder_is_open (base->decoder)
 107         && !gst_va_decoder_close (base->decoder))
 108       return FALSE;
 109
 110     if (!gst_va_decoder_open (base->decoder, base->profile, base->rt_format))
 111       return FALSE;
 112
 113     if (!gst_va_decoder_set_frame_size (base->decoder, base->width,
 114             base->height))
 115       return FALSE;
 116   }
 117
 118   if (!gst_va_base_dec_set_output_state (base))
 119     return FALSE;
 120
 121   if (self->preferred_format != GST_VIDEO_FORMAT_UNKNOWN &&
 122       self->preferred_format !=
 123       GST_VIDEO_INFO_FORMAT (&base->output_state->info)) {
 124     GST_WARNING_OBJECT (self, "The preferred_format is different from"
 125         " the last result");
 126     return FALSE;
 127   }
 128   self->preferred_format = GST_VIDEO_INFO_FORMAT (&base->output_state->info);
 129
 130   return GST_VIDEO_DECODER_CLASS (parent_class)->negotiate (decoder);
 131 }
 132
 133 static GstCaps *
 134 _complete_sink_caps (GstCaps * sinkcaps)
 135 {
 136   GstCaps *caps = gst_caps_copy (sinkcaps);
 137   GValue val = G_VALUE_INIT;
 138
 139   g_value_init (&val, G_TYPE_STRING);
 140   g_value_set_string (&val, "frame");
 141   gst_caps_set_value (caps, "alignment", &val);
 142   g_value_unset (&val);
 143
 144   return caps;
 145 }
 146
 147 static VAProfile
 148 _get_profile (GstVaAV1Dec * self, const GstAV1SequenceHeaderOBU * seq_hdr)
 149 {
 150   GstVaBaseDec *base = GST_VA_BASE_DEC (self);
 151   VAProfile profile = VAProfileNone;
 152
 153   switch (seq_hdr->seq_profile) {
 154     case GST_AV1_PROFILE_0:
 155       profile = VAProfileAV1Profile0;
 156       break;
 157     case GST_AV1_PROFILE_1:
 158       profile = VAProfileAV1Profile1;
 159       break;
 160     default:
 161       GST_ERROR_OBJECT (self, "Unsupported av1 profile value %d",
 162           seq_hdr->seq_profile);
 163       return VAProfileNone;
 164   }
 165
 166   if (!gst_va_decoder_has_profile (base->decoder, profile)) {
 167     GST_ERROR_OBJECT (self, "Profile %s is not supported by HW",
 168         gst_va_profile_name (profile));
 169     return VAProfileNone;
 170   }
 171
 172   return profile;
 173 }
 174
 175 static guint
 176 _get_rtformat (GstVaAV1Dec * self, VAProfile profile,
 177     const GstAV1SequenceHeaderOBU * seq_header)
 178 {
 179   /* 6.4.1:
 180      seq_profile  Bit depth  Monochrome support  Chroma subsampling
 181      0            8 or 10    Yes                 YUV 4:2:0
 182      1            8 or 10    No                  YUV 4:4:4
 183      2            8 or 10    Yes                 YUV 4:2:2
 184      2            12         Yes                 YUV 4:2:0,YUV 4:2:2,YUV 4:4:4
 185    */
 186
 187   /* TODO: consider Monochrome case. Just return 4:2:0 for Monochrome now. */
 188   switch (profile) {
 189     case VAProfileAV1Profile0:
 190       if (seq_header->bit_depth == 8) {
 191         return VA_RT_FORMAT_YUV420;
 192       } else if (seq_header->bit_depth == 10) {
 193         return VA_RT_FORMAT_YUV420_10;
 194       }
 195       break;
 196     case VAProfileAV1Profile1:
 197       if (seq_header->bit_depth == 8) {
 198         return VA_RT_FORMAT_YUV444;
 199       } else if (seq_header->bit_depth == 10) {
 200         return VA_RT_FORMAT_YUV444_10;
 201       }
 202       break;
 203     default:
 204       break;
 205   }
 206
 207   GST_ERROR_OBJECT (self, "Fail to find rtformat for profile:%s, bit_depth:%d",
 208       gst_va_profile_name (profile), seq_header->bit_depth);
 209   return 0;
 210 }
 211
 212 static GstCaps *
 213 gst_va_av1_dec_getcaps (GstVideoDecoder * decoder, GstCaps * filter)
 214 {
 215   GstCaps *sinkcaps, *caps = NULL, *tmp;
 216   GstVaBaseDec *base = GST_VA_BASE_DEC (decoder);
 217
 218   if (base->decoder)
 219     caps = gst_va_decoder_get_sinkpad_caps (base->decoder);
 220
 221   if (caps) {
 222     sinkcaps = _complete_sink_caps (caps);
 223     gst_caps_unref (caps);
 224     if (filter) {
 225       tmp = gst_caps_intersect_full (filter, sinkcaps,
 226           GST_CAPS_INTERSECT_FIRST);
 227       gst_caps_unref (sinkcaps);
 228       caps = tmp;
 229     } else {
 230       caps = sinkcaps;
 231     }
 232     GST_LOG_OBJECT (base, "Returning caps %" GST_PTR_FORMAT, caps);
 233   } else if (!caps) {
 234     caps = gst_video_decoder_proxy_getcaps (decoder, NULL, filter);
 235   }
 236
 237   return caps;
 238 }
 239
 240 static void
 241 _clear_internal_pool (GstVaAV1Dec * self)
 242 {
 243   if (self->internal_pool)
 244     gst_buffer_pool_set_active (self->internal_pool, FALSE);
 245
 246   gst_clear_object (&self->internal_pool);
 247 }
 248
 249 static GstBufferPool *
 250 _create_internal_pool (GstVaAV1Dec * self, gint width, gint height)
 251 {
 252   GstVaBaseDec *base = GST_VA_BASE_DEC (self);
 253   GstVideoInfo info;
 254   GArray *surface_formats;
 255   GstAllocator *allocator;
 256   GstCaps *caps = NULL;
 257   GstBufferPool *pool;
 258   GstAllocationParams params = { 0, };
 259
 260   gst_allocation_params_init (&params);
 261
 262   /* We may come here before the negotiation, make sure all pools
 263      use the same video format. */
 264   if (self->preferred_format == GST_VIDEO_FORMAT_UNKNOWN) {
 265     GstVideoFormat format;
 266
 267     gst_va_base_dec_get_preferred_format_and_caps_features (base,
 268         &format, NULL);
 269     if (format == GST_VIDEO_FORMAT_UNKNOWN) {
 270       GST_WARNING_OBJECT (self, "Failed to get format for internal pool");
 271       return NULL;
 272     }
 273
 274     self->preferred_format = format;
 275   }
 276
 277   gst_video_info_set_format (&info, self->preferred_format, width, height);
 278
 279   caps = gst_video_info_to_caps (&info);
 280   if (caps == NULL) {
 281     GST_WARNING_OBJECT (self, "Failed to create caps for internal pool");
 282     return NULL;
 283   }
 284
 285   gst_caps_set_features_simple (caps,
 286       gst_caps_features_from_string (GST_CAPS_FEATURE_MEMORY_VA));
 287
 288   surface_formats = gst_va_decoder_get_surface_formats (base->decoder);
 289   allocator = gst_va_allocator_new (base->display, surface_formats);
 290
 291   pool = gst_va_pool_new_with_config (caps, GST_VIDEO_INFO_SIZE (&info),
 292       1, 0, VA_SURFACE_ATTRIB_USAGE_HINT_DECODER, GST_VA_FEATURE_AUTO,
 293       allocator, &params);
 294   gst_clear_caps (&caps);
 295
 296   if (!pool) {
 297     GST_WARNING_OBJECT (self, "Failed to create internal pool");
 298     gst_object_unref (allocator);
 299     return NULL;
 300   }
 301
 302   gst_object_unref (allocator);
 303   gst_caps_unref (caps);
 304
 305   gst_buffer_pool_set_active (pool, TRUE);
 306
 307   return pool;
 308 }
 309
 310 static GstFlowReturn
 311 gst_va_av1_dec_new_sequence (GstAV1Decoder * decoder,
 312     const GstAV1SequenceHeaderOBU * seq_hdr, gint max_dpb_size)
 313 {
 314   GstVaAV1Dec *self = GST_VA_AV1_DEC (decoder);
 315   GstVaBaseDec *base = GST_VA_BASE_DEC (decoder);
 316   GstVideoInfo *info = &base->output_info;
 317   VAProfile profile;
 318   guint rt_format;
 319   gint width, height;
 320
 321   GST_LOG_OBJECT (self, "new sequence");
 322
 323   profile = _get_profile (self, seq_hdr);
 324   if (profile == VAProfileNone)
 325     return GST_FLOW_NOT_NEGOTIATED;
 326
 327   rt_format = _get_rtformat (self, profile, seq_hdr);
 328   if (!rt_format)
 329     return GST_FLOW_NOT_NEGOTIATED;
 330
 331   self->seq = *seq_hdr;
 332
 333   width = seq_hdr->max_frame_width_minus_1 + 1;
 334   height = seq_hdr->max_frame_height_minus_1 + 1;
 335
 336   if (!gst_va_decoder_config_is_equal (base->decoder, profile,
 337           rt_format, width, height)) {
 338     _clear_internal_pool (self);
 339     self->preferred_format = GST_VIDEO_FORMAT_UNKNOWN;
 340
 341     base->profile = profile;
 342     base->rt_format = rt_format;
 343     GST_VIDEO_INFO_WIDTH (info) = base->width = width;
 344     GST_VIDEO_INFO_HEIGHT (info) = base->height = height;
 345     base->need_negotiation = TRUE;
 346     base->min_buffers = 7 + 4;  /* dpb size + scratch surfaces */
 347     base->need_valign = FALSE;
 348   }
 349
 350   g_clear_pointer (&base->input_state, gst_video_codec_state_unref);
 351   base->input_state = gst_video_codec_state_ref (decoder->input_state);
 352
 353   return GST_FLOW_OK;
 354 }
 355
 356 static inline GstFlowReturn
 357 _acquire_internal_buffer (GstVaAV1Dec * self, GstVideoCodecFrame * frame)
 358 {
 359   GstVaBaseDec *base = GST_VA_BASE_DEC (self);
 360   GstFlowReturn ret;
 361
 362   if (!self->internal_pool) {
 363     self->internal_pool =
 364         _create_internal_pool (self, base->width, base->height);
 365     if (!self->internal_pool)
 366       return GST_FLOW_ERROR;
 367   }
 368
 369   if (base->need_negotiation) {
 370     if (!gst_video_decoder_negotiate (GST_VIDEO_DECODER (self)))
 371       return GST_FLOW_NOT_NEGOTIATED;
 372   }
 373
 374   ret = gst_buffer_pool_acquire_buffer (self->internal_pool,
 375       &frame->output_buffer, NULL);
 376   if (ret != GST_FLOW_OK) {
 377     GST_WARNING_OBJECT (self,
 378         "Failed to allocated output buffer from internal pool, return %s",
 379         gst_flow_get_name (ret));
 380   }
 381
 382   return ret;
 383 }
 384
 385 static GstFlowReturn
 386 gst_va_av1_dec_new_picture (GstAV1Decoder * decoder,
 387     GstVideoCodecFrame * frame, GstAV1Picture * picture)
 388 {
 389   GstVaAV1Dec *self = GST_VA_AV1_DEC (decoder);
 390   GstVaBaseDec *base = GST_VA_BASE_DEC (decoder);
 391   GstAV1FrameHeaderOBU *frame_hdr = &picture->frame_hdr;
 392   GstVaDecodePicture *pic;
 393   GstVideoInfo *info = &base->output_info;
 394   GstFlowReturn ret;
 395
 396   /* Only output the highest spatial layer. For non output pictures,
 397      we just use internal pool, then no negotiation needed. */
 398   if (picture->spatial_id < decoder->highest_spatial_layer) {
 399     ret = _acquire_internal_buffer (self, frame);
 400     if (ret != GST_FLOW_OK)
 401       return ret;
 402   } else {
 403     if (frame_hdr->upscaled_width != GST_VIDEO_INFO_WIDTH (info)
 404         || frame_hdr->frame_height != GST_VIDEO_INFO_HEIGHT (info)) {
 405       GST_VIDEO_INFO_WIDTH (info) = frame_hdr->upscaled_width;
 406       GST_VIDEO_INFO_HEIGHT (info) = frame_hdr->frame_height;
 407
 408       if (GST_VIDEO_INFO_WIDTH (info) < base->width
 409           || GST_VIDEO_INFO_HEIGHT (info) < base->height) {
 410         base->need_valign = TRUE;
 411         /* *INDENT-OFF* */
 412         base->valign = (GstVideoAlignment) {
 413           .padding_bottom = base->height - GST_VIDEO_INFO_HEIGHT (info),
 414           .padding_right = base->width - GST_VIDEO_INFO_WIDTH (info),
 415         };
 416         /* *INDENT-ON* */
 417       }
 418
 419       base->need_negotiation = TRUE;
 420     }
 421
 422     ret = gst_va_base_dec_prepare_output_frame (base, frame);
 423     if (ret != GST_FLOW_OK) {
 424       GST_WARNING_OBJECT (self, "Failed to allocated output buffer, return %s",
 425           gst_flow_get_name (ret));
 426       return ret;
 427     }
 428   }
 429
 430   if (picture->apply_grain) {
 431     if (!gst_va_buffer_create_aux_surface (frame->output_buffer)) {
 432       GST_WARNING_OBJECT (self,
 433           "Failed to allocated aux surface for buffer %p",
 434           frame->output_buffer);
 435       return GST_FLOW_ERROR;
 436     }
 437   }
 438
 439   pic = gst_va_decode_picture_new (base->decoder, frame->output_buffer);
 440
 441   gst_av1_picture_set_user_data (picture, pic,
 442       (GDestroyNotify) gst_va_decode_picture_free);
 443
 444   if (picture->apply_grain) {
 445     GST_LOG_OBJECT (self, "New va decode picture %p - %#x(aux: %#x)", pic,
 446         gst_va_decode_picture_get_surface (pic),
 447         gst_va_decode_picture_get_aux_surface (pic));
 448   } else {
 449     GST_LOG_OBJECT (self, "New va decode picture %p - %#x", pic,
 450         gst_va_decode_picture_get_surface (pic));
 451   }
 452
 453   return GST_FLOW_OK;
 454 }
 455
 456 static GstAV1Picture *
 457 gst_va_av1_dec_duplicate_picture (GstAV1Decoder * decoder,
 458     GstVideoCodecFrame * frame, GstAV1Picture * picture)
 459 {
 460   GstVaAV1Dec *self = GST_VA_AV1_DEC (decoder);
 461   GstVaBaseDec *base = GST_VA_BASE_DEC (decoder);
 462   GstVaDecodePicture *pic;
 463   GstVaDecodePicture *new_pic;
 464   GstAV1Picture *new_picture;
 465
 466   pic = gst_av1_picture_get_user_data (picture);
 467   if (!pic) {
 468     GST_ERROR_OBJECT (self, "Parent picture does not have a va picture");
 469     return NULL;
 470   }
 471
 472   new_picture = gst_av1_picture_new ();
 473   g_assert (pic->gstbuffer);
 474   new_pic = gst_va_decode_picture_new (base->decoder, pic->gstbuffer);
 475
 476   GST_LOG_OBJECT (self, "Duplicate output with buffer %" GST_PTR_FORMAT
 477       " (surface %#x)", pic, gst_va_decode_picture_get_surface (pic));
 478
 479   gst_av1_picture_set_user_data (new_picture, new_pic,
 480       (GDestroyNotify) gst_va_decode_picture_free);
 481
 482   return new_picture;
 483 }
 484
 485 static void
 486 _setup_segment_info (VADecPictureParameterBufferAV1 * pic_param,
 487     GstAV1FrameHeaderOBU * frame_header)
 488 {
 489   guint i, j;
 490   uint8_t feature_mask;
 491
 492   for (i = 0; i < GST_AV1_MAX_SEGMENTS; i++)
 493     for (j = 0; j < GST_AV1_SEG_LVL_MAX; j++)
 494       pic_param->seg_info.feature_data[i][j] =
 495           frame_header->segmentation_params.feature_data[i][j];
 496
 497   for (i = 0; i < GST_AV1_MAX_SEGMENTS; i++) {
 498     feature_mask = 0;
 499     for (j = 0; j < GST_AV1_SEG_LVL_MAX; j++) {
 500       if (frame_header->segmentation_params.feature_enabled[i][j])
 501         feature_mask |= 1 << j;
 502     }
 503     pic_param->seg_info.feature_mask[i] = feature_mask;
 504   }
 505 }
 506
 507 static void
 508 _setup_film_grain_info (VADecPictureParameterBufferAV1 * pic_param,
 509     GstAV1FrameHeaderOBU * frame_header)
 510 {
 511   guint i;
 512
 513   if (!frame_header->film_grain_params.apply_grain)
 514     return;
 515
 516   pic_param->film_grain_info.num_y_points =
 517       frame_header->film_grain_params.num_y_points;
 518   for (i = 0; i < frame_header->film_grain_params.num_y_points; i++) {
 519     pic_param->film_grain_info.point_y_value[i] =
 520         frame_header->film_grain_params.point_y_value[i];
 521     pic_param->film_grain_info.point_y_scaling[i] =
 522         frame_header->film_grain_params.point_y_scaling[i];
 523   }
 524
 525   pic_param->film_grain_info.num_cb_points =
 526       frame_header->film_grain_params.num_cb_points;
 527   for (i = 0; i < frame_header->film_grain_params.num_cb_points; i++) {
 528     pic_param->film_grain_info.point_cb_value[i] =
 529         frame_header->film_grain_params.point_cb_value[i];
 530     pic_param->film_grain_info.point_cb_scaling[i] =
 531         frame_header->film_grain_params.point_cb_scaling[i];
 532   }
 533
 534   pic_param->film_grain_info.num_cr_points =
 535       frame_header->film_grain_params.num_cr_points;
 536   for (i = 0; i < frame_header->film_grain_params.num_cr_points; i++) {
 537     pic_param->film_grain_info.point_cr_value[i] =
 538         frame_header->film_grain_params.point_cr_value[i];
 539     pic_param->film_grain_info.point_cr_scaling[i] =
 540         frame_header->film_grain_params.point_cr_scaling[i];
 541   }
 542
 543
 544   if (pic_param->film_grain_info.num_y_points) {
 545     for (i = 0; i < 24; i++) {
 546       pic_param->film_grain_info.ar_coeffs_y[i] =
 547           frame_header->film_grain_params.ar_coeffs_y_plus_128[i] - 128;
 548     }
 549   }
 550   if (frame_header->film_grain_params.chroma_scaling_from_luma
 551       || pic_param->film_grain_info.num_cb_points) {
 552     for (i = 0; i < GST_AV1_MAX_NUM_POS_LUMA; i++) {
 553       pic_param->film_grain_info.ar_coeffs_cb[i] =
 554           frame_header->film_grain_params.ar_coeffs_cb_plus_128[i] - 128;
 555     }
 556   }
 557   if (frame_header->film_grain_params.chroma_scaling_from_luma
 558       || pic_param->film_grain_info.num_cr_points) {
 559     for (i = 0; i < GST_AV1_MAX_NUM_POS_LUMA; i++) {
 560       pic_param->film_grain_info.ar_coeffs_cr[i] =
 561           frame_header->film_grain_params.ar_coeffs_cr_plus_128[i] - 128;
 562     }
 563   }
 564 }
 565
 566 static void
 567 _setup_loop_filter_info (VADecPictureParameterBufferAV1 * pic_param,
 568     GstAV1FrameHeaderOBU * frame_header)
 569 {
 570   guint i;
 571
 572   pic_param->filter_level[0] =
 573       frame_header->loop_filter_params.loop_filter_level[0];
 574   pic_param->filter_level[1] =
 575       frame_header->loop_filter_params.loop_filter_level[1];
 576   pic_param->filter_level_u =
 577       frame_header->loop_filter_params.loop_filter_level[2];
 578   pic_param->filter_level_v =
 579       frame_header->loop_filter_params.loop_filter_level[3];
 580
 581   for (i = 0; i < GST_AV1_TOTAL_REFS_PER_FRAME; i++)
 582     pic_param->ref_deltas[i] =
 583         frame_header->loop_filter_params.loop_filter_ref_deltas[i];
 584   for (i = 0; i < 2; i++)
 585     pic_param->mode_deltas[i] =
 586         frame_header->loop_filter_params.loop_filter_mode_deltas[i];
 587 }
 588
 589 static void
 590 _setup_quantization_info (VADecPictureParameterBufferAV1 * pic_param,
 591     GstAV1FrameHeaderOBU * frame_header)
 592 {
 593   pic_param->qmatrix_fields.bits.using_qmatrix =
 594       frame_header->quantization_params.using_qmatrix;
 595   if (frame_header->quantization_params.using_qmatrix) {
 596     pic_param->qmatrix_fields.bits.qm_y =
 597         frame_header->quantization_params.qm_y;
 598     pic_param->qmatrix_fields.bits.qm_u =
 599         frame_header->quantization_params.qm_u;
 600     pic_param->qmatrix_fields.bits.qm_v =
 601         frame_header->quantization_params.qm_v;
 602   } else {
 603     pic_param->qmatrix_fields.bits.qm_y = 0;
 604     pic_param->qmatrix_fields.bits.qm_u = 0;
 605     pic_param->qmatrix_fields.bits.qm_v = 0;
 606   }
 607 }
 608
 609 static void
 610 _setup_cdef_info (VADecPictureParameterBufferAV1 * pic_param,
 611     GstAV1FrameHeaderOBU * frame_header, guint8 num_planes)
 612 {
 613   guint8 sec_strength;
 614   guint i;
 615
 616   pic_param->cdef_damping_minus_3 = frame_header->cdef_params.cdef_damping - 3;
 617   pic_param->cdef_bits = frame_header->cdef_params.cdef_bits;
 618   for (i = 0; i < GST_AV1_CDEF_MAX; i++) {
 619     sec_strength = frame_header->cdef_params.cdef_y_sec_strength[i];
 620     g_assert (sec_strength <= 4);
 621     /* may need to minus 1 in order to merge with primary value. */
 622     if (sec_strength == 4)
 623       sec_strength--;
 624
 625     pic_param->cdef_y_strengths[i] =
 626         ((frame_header->cdef_params.cdef_y_pri_strength[i] & 0xf) << 2) |
 627         (sec_strength & 0x03);
 628   }
 629   if (num_planes > 1) {
 630     for (i = 0; i < GST_AV1_CDEF_MAX; i++) {
 631       sec_strength = frame_header->cdef_params.cdef_uv_sec_strength[i];
 632       g_assert (sec_strength <= 4);
 633       /* may need to minus 1 in order to merge with primary value. */
 634       if (sec_strength == 4)
 635         sec_strength--;
 636
 637       pic_param->cdef_uv_strengths[i] =
 638           ((frame_header->cdef_params.cdef_uv_pri_strength[i] & 0xf) << 2) |
 639           (sec_strength & 0x03);
 640     }
 641   } else {
 642     for (i = 0; i < GST_AV1_CDEF_MAX; i++) {
 643       pic_param->cdef_uv_strengths[i] = 0;
 644     }
 645   }
 646 }
 647
 648 static void
 649 _setup_global_motion_info (VADecPictureParameterBufferAV1 * pic_param,
 650     GstAV1FrameHeaderOBU * frame_header)
 651 {
 652   guint i, j;
 653
 654   for (i = 0; i < 7; i++) {
 655     /* assuming VAAV1TransformationType and GstAV1WarpModelType are
 656      * equivalent */
 657     pic_param->wm[i].wmtype = (VAAV1TransformationType)
 658         frame_header->global_motion_params.gm_type[GST_AV1_REF_LAST_FRAME + i];
 659
 660     for (j = 0; j < 6; j++)
 661       pic_param->wm[i].wmmat[j] =
 662           frame_header->global_motion_params.gm_params
 663           [GST_AV1_REF_LAST_FRAME + i][j];
 664
 665     pic_param->wm[i].wmmat[6] = 0;
 666     pic_param->wm[i].wmmat[7] = 0;
 667
 668     pic_param->wm[i].invalid =
 669         frame_header->global_motion_params.invalid[GST_AV1_REF_LAST_FRAME + i];
 670   }
 671 }
 672
 673 static GstFlowReturn
 674 gst_va_av1_dec_start_picture (GstAV1Decoder * decoder, GstAV1Picture * picture,
 675     GstAV1Dpb * dpb)
 676 {
 677   GstVaAV1Dec *self = GST_VA_AV1_DEC (decoder);
 678   GstVaBaseDec *base = GST_VA_BASE_DEC (decoder);
 679   GstAV1FrameHeaderOBU *frame_header = &picture->frame_hdr;
 680   GstAV1SequenceHeaderOBU *seq_header = &self->seq;
 681   VADecPictureParameterBufferAV1 pic_param = { };
 682   GstVaDecodePicture *va_pic;
 683   guint i;
 684
 685   va_pic = gst_av1_picture_get_user_data (picture);
 686   g_assert (va_pic);
 687
 688   /* *INDENT-OFF* */
 689   pic_param = (VADecPictureParameterBufferAV1){
 690     .profile = seq_header->seq_profile,
 691     .order_hint_bits_minus_1 = seq_header->order_hint_bits_minus_1,
 692     .matrix_coefficients = seq_header->color_config.matrix_coefficients,
 693     .seq_info_fields.fields = {
 694       .still_picture = seq_header->still_picture,
 695       .use_128x128_superblock = seq_header->use_128x128_superblock,
 696       .enable_filter_intra = seq_header->enable_filter_intra,
 697       .enable_intra_edge_filter = seq_header->enable_intra_edge_filter,
 698       .enable_interintra_compound = seq_header->enable_interintra_compound,
 699       .enable_masked_compound = seq_header->enable_masked_compound,
 700       .enable_dual_filter = seq_header->enable_dual_filter,
 701       .enable_order_hint = seq_header->enable_order_hint,
 702       .enable_jnt_comp = seq_header->enable_jnt_comp,
 703       .enable_cdef = seq_header->enable_cdef,
 704       .mono_chrome = seq_header->color_config.mono_chrome,
 705       .color_range = seq_header->color_config.color_range,
 706       .subsampling_x = seq_header->color_config.subsampling_x,
 707       .subsampling_y = seq_header->color_config.subsampling_y,
 708       .film_grain_params_present = seq_header->film_grain_params_present,
 709     },
 710     .anchor_frames_num = 0,
 711     .anchor_frames_list = NULL,
 712     .frame_width_minus1 = frame_header->upscaled_width - 1,
 713     .frame_height_minus1 = frame_header->frame_height - 1,
 714     .output_frame_width_in_tiles_minus_1 = 0,
 715     .output_frame_height_in_tiles_minus_1 = 0,
 716     .order_hint = frame_header->order_hint,
 717     /* Segmentation */
 718     .seg_info.segment_info_fields.bits = {
 719       .enabled = frame_header->segmentation_params.segmentation_enabled,
 720       .update_map = frame_header->segmentation_params.segmentation_update_map,
 721       .temporal_update =
 722         frame_header->segmentation_params.segmentation_temporal_update,
 723       .update_data =
 724         frame_header->segmentation_params.segmentation_update_data,
 725     },
 726     /* FilmGrain */
 727     .film_grain_info = {
 728       .film_grain_info_fields.bits = {
 729         .apply_grain = frame_header->film_grain_params.apply_grain,
 730         .chroma_scaling_from_luma =
 731           frame_header->film_grain_params.chroma_scaling_from_luma,
 732         .grain_scaling_minus_8 =
 733           frame_header->film_grain_params.grain_scaling_minus_8,
 734         .ar_coeff_lag = frame_header->film_grain_params.ar_coeff_lag,
 735         .ar_coeff_shift_minus_6 =
 736           frame_header->film_grain_params.ar_coeff_shift_minus_6,
 737         .grain_scale_shift = frame_header->film_grain_params.grain_scale_shift,
 738         .overlap_flag = frame_header->film_grain_params.overlap_flag,
 739         .clip_to_restricted_range =
 740           frame_header->film_grain_params.clip_to_restricted_range,
 741       },
 742       .grain_seed = frame_header->film_grain_params.grain_seed,
 743       .cb_mult = frame_header->film_grain_params.cb_mult,
 744       .cb_luma_mult = frame_header->film_grain_params.cb_luma_mult,
 745       .cb_offset = frame_header->film_grain_params.cb_offset,
 746       .cr_mult = frame_header->film_grain_params.cr_mult,
 747       .cr_luma_mult = frame_header->film_grain_params.cr_luma_mult,
 748       .cr_offset = frame_header->film_grain_params.cr_offset,
 749     },
 750     .tile_cols = frame_header->tile_info.tile_cols,
 751     .tile_rows = frame_header->tile_info.tile_rows,
 752     .context_update_tile_id = frame_header->tile_info.context_update_tile_id,
 753     .pic_info_fields.bits = {
 754       .frame_type = frame_header->frame_type,
 755       .show_frame = frame_header->show_frame,
 756       .showable_frame = frame_header->showable_frame,
 757       .error_resilient_mode = frame_header->error_resilient_mode,
 758       .disable_cdf_update = frame_header->disable_cdf_update,
 759       .allow_screen_content_tools = frame_header->allow_screen_content_tools,
 760       .force_integer_mv = frame_header->force_integer_mv,
 761       .allow_intrabc = frame_header->allow_intrabc,
 762       .use_superres = frame_header->use_superres,
 763       .allow_high_precision_mv = frame_header->allow_high_precision_mv,
 764       .is_motion_mode_switchable = frame_header->is_motion_mode_switchable,
 765       .use_ref_frame_mvs = frame_header->use_ref_frame_mvs,
 766       .disable_frame_end_update_cdf =
 767         frame_header->disable_frame_end_update_cdf,
 768       .uniform_tile_spacing_flag =
 769         frame_header->tile_info.uniform_tile_spacing_flag,
 770       .allow_warped_motion = frame_header->allow_warped_motion,
 771     },
 772     .superres_scale_denominator = frame_header->superres_denom,
 773     .interp_filter = frame_header->interpolation_filter,
 774     /* loop filter */
 775     .loop_filter_info_fields.bits = {
 776       .sharpness_level =
 777         frame_header->loop_filter_params.loop_filter_sharpness,
 778       .mode_ref_delta_enabled =
 779         frame_header->loop_filter_params.loop_filter_delta_enabled,
 780       .mode_ref_delta_update =
 781         frame_header->loop_filter_params.loop_filter_delta_update,
 782     },
 783     .mode_control_fields.bits = {
 784       .delta_lf_present_flag =
 785         frame_header->loop_filter_params.delta_lf_present,
 786       .log2_delta_lf_res = frame_header->loop_filter_params.delta_lf_res,
 787       .delta_lf_multi = frame_header->loop_filter_params.delta_lf_multi,
 788       .delta_q_present_flag =
 789         frame_header->quantization_params.delta_q_present,
 790       .log2_delta_q_res = frame_header->quantization_params.delta_q_res,
 791       .tx_mode = frame_header->tx_mode,
 792       .reference_select = frame_header->reference_select,
 793       .reduced_tx_set_used = frame_header->reduced_tx_set,
 794       .skip_mode_present = frame_header->skip_mode_present,
 795     },
 796     /* quantization */
 797     .base_qindex = frame_header->quantization_params.base_q_idx,
 798     .y_dc_delta_q = frame_header->quantization_params.delta_q_y_dc,
 799     .u_dc_delta_q = frame_header->quantization_params.delta_q_u_dc,
 800     .u_ac_delta_q = frame_header->quantization_params.delta_q_u_ac,
 801     .v_dc_delta_q = frame_header->quantization_params.delta_q_v_dc,
 802     .v_ac_delta_q = frame_header->quantization_params.delta_q_v_ac,
 803     /* loop restoration */
 804     .loop_restoration_fields.bits = {
 805       .yframe_restoration_type =
 806         frame_header->loop_restoration_params.frame_restoration_type[0],
 807       .cbframe_restoration_type =
 808         frame_header->loop_restoration_params.frame_restoration_type[1],
 809       .crframe_restoration_type =
 810         frame_header->loop_restoration_params.frame_restoration_type[2],
 811       .lr_unit_shift = frame_header->loop_restoration_params.lr_unit_shift,
 812       .lr_uv_shift = frame_header->loop_restoration_params.lr_uv_shift,
 813     },
 814   };
 815   /* *INDENT-ON* */
 816
 817   if (seq_header->bit_depth == 8) {
 818     pic_param.bit_depth_idx = 0;
 819   } else if (seq_header->bit_depth == 10) {
 820     pic_param.bit_depth_idx = 1;
 821   } else if (seq_header->bit_depth == 12) {
 822     pic_param.bit_depth_idx = 2;
 823   } else {
 824     g_assert_not_reached ();
 825   }
 826
 827   if (frame_header->film_grain_params.apply_grain) {
 828     pic_param.current_frame = gst_va_decode_picture_get_aux_surface (va_pic);
 829     pic_param.current_display_picture =
 830         gst_va_decode_picture_get_surface (va_pic);
 831   } else {
 832     pic_param.current_frame = gst_va_decode_picture_get_surface (va_pic);
 833     pic_param.current_display_picture = VA_INVALID_SURFACE;
 834   }
 835
 836   for (i = 0; i < GST_AV1_NUM_REF_FRAMES; i++) {
 837     if (dpb->pic_list[i]) {
 838       if (dpb->pic_list[i]->apply_grain) {
 839         pic_param.ref_frame_map[i] = gst_va_decode_picture_get_aux_surface
 840             (gst_av1_picture_get_user_data (dpb->pic_list[i]));
 841       } else {
 842         pic_param.ref_frame_map[i] = gst_va_decode_picture_get_surface
 843             (gst_av1_picture_get_user_data (dpb->pic_list[i]));
 844       }
 845     } else {
 846       pic_param.ref_frame_map[i] = VA_INVALID_SURFACE;
 847     }
 848   }
 849   for (i = 0; i < GST_AV1_REFS_PER_FRAME; i++) {
 850     pic_param.ref_frame_idx[i] = frame_header->ref_frame_idx[i];
 851   }
 852   pic_param.primary_ref_frame = frame_header->primary_ref_frame;
 853
 854   _setup_segment_info (&pic_param, frame_header);
 855   _setup_film_grain_info (&pic_param, frame_header);
 856
 857   for (i = 0; i < 63; i++) {
 858     pic_param.width_in_sbs_minus_1[i] =
 859         frame_header->tile_info.width_in_sbs_minus_1[i];
 860     pic_param.height_in_sbs_minus_1[i] =
 861         frame_header->tile_info.height_in_sbs_minus_1[i];
 862   }
 863
 864   _setup_loop_filter_info (&pic_param, frame_header);
 865   _setup_quantization_info (&pic_param, frame_header);
 866   _setup_cdef_info (&pic_param, frame_header, seq_header->num_planes);
 867   _setup_global_motion_info (&pic_param, frame_header);
 868
 869   if (!gst_va_decoder_add_param_buffer (base->decoder, va_pic,
 870           VAPictureParameterBufferType, &pic_param, sizeof (pic_param)))
 871     return GST_FLOW_ERROR;
 872
 873   return GST_FLOW_OK;
 874 }
 875
 876 static GstFlowReturn
 877 gst_va_av1_dec_decode_tile (GstAV1Decoder * decoder, GstAV1Picture * picture,
 878     GstAV1Tile * tile)
 879 {
 880   GstVaAV1Dec *self = GST_VA_AV1_DEC (decoder);
 881   GstVaBaseDec *base = GST_VA_BASE_DEC (decoder);
 882   GstAV1TileGroupOBU *tile_group = &tile->tile_group;
 883   GstVaDecodePicture *va_pic;
 884   guint i;
 885   VASliceParameterBufferAV1 slice_param[GST_AV1_MAX_TILE_COUNT];
 886
 887   GST_TRACE_OBJECT (self, "-");
 888
 889   for (i = 0; i < tile_group->tg_end - tile_group->tg_start + 1; i++) {
 890     slice_param[i] = (VASliceParameterBufferAV1) {
 891     };
 892     slice_param[i].slice_data_size =
 893         tile_group->entry[tile_group->tg_start + i].tile_size;
 894     slice_param[i].slice_data_offset =
 895         tile_group->entry[tile_group->tg_start + i].tile_offset;
 896     slice_param[i].tile_row =
 897         tile_group->entry[tile_group->tg_start + i].tile_row;
 898     slice_param[i].tile_column =
 899         tile_group->entry[tile_group->tg_start + i].tile_col;
 900     slice_param[i].slice_data_flag = 0;
 901   }
 902
 903   va_pic = gst_av1_picture_get_user_data (picture);
 904
 905   if (!gst_va_decoder_add_slice_buffer_with_n_params (base->decoder, va_pic,
 906           slice_param, sizeof (VASliceParameterBufferAV1), i, tile->obu.data,
 907           tile->obu.obu_size)) {
 908     return GST_FLOW_ERROR;
 909   }
 910
 911   return GST_FLOW_OK;
 912 }
 913
 914 static GstFlowReturn
 915 gst_va_av1_dec_end_picture (GstAV1Decoder * decoder, GstAV1Picture * picture)
 916 {
 917   GstVaAV1Dec *self = GST_VA_AV1_DEC (decoder);
 918   GstVaBaseDec *base = GST_VA_BASE_DEC (decoder);
 919   GstVaDecodePicture *va_pic;
 920
 921   GST_LOG_OBJECT (self, "end picture %p, (system_frame_number %d)",
 922       picture, picture->system_frame_number);
 923
 924   va_pic = gst_av1_picture_get_user_data (picture);
 925
 926   if (!gst_va_decoder_decode_with_aux_surface (base->decoder, va_pic,
 927           picture->apply_grain)) {
 928     return GST_FLOW_ERROR;
 929   }
 930
 931   return GST_FLOW_OK;
 932 }
 933
 934 static GstFlowReturn
 935 gst_va_av1_dec_output_picture (GstAV1Decoder * decoder,
 936     GstVideoCodecFrame * frame, GstAV1Picture * picture)
 937 {
 938   GstVaAV1Dec *self = GST_VA_AV1_DEC (decoder);
 939   GstVaBaseDec *base = GST_VA_BASE_DEC (decoder);
 940   GstVideoDecoder *vdec = GST_VIDEO_DECODER (decoder);
 941   gboolean ret;
 942
 943   g_assert (picture->frame_hdr.show_frame ||
 944       picture->frame_hdr.show_existing_frame);
 945
 946   GST_LOG_OBJECT (self,
 947       "Outputting picture %p (system_frame_number %d)",
 948       picture, picture->system_frame_number);
 949
 950   if (picture->frame_hdr.show_existing_frame) {
 951     GstVaDecodePicture *pic;
 952
 953     g_assert (!frame->output_buffer);
 954     pic = gst_av1_picture_get_user_data (picture);
 955     frame->output_buffer = gst_buffer_ref (pic->gstbuffer);
 956   }
 957
 958   ret = gst_va_base_dec_process_output (base, frame, 0);
 959   gst_av1_picture_unref (picture);
 960
 961   if (ret)
 962     return gst_video_decoder_finish_frame (vdec, frame);
 963   return GST_FLOW_ERROR;
 964 }
 965
 966 static gboolean
 967 gst_va_av1_dec_start (GstVideoDecoder * decoder)
 968 {
 969   GstVaAV1Dec *self = GST_VA_AV1_DEC (decoder);
 970
 971   self->preferred_format = GST_VIDEO_FORMAT_UNKNOWN;
 972
 973   return GST_VIDEO_DECODER_CLASS (parent_class)->start (decoder);
 974 }
 975
 976 static gboolean
 977 gst_va_av1_dec_close (GstVideoDecoder * decoder)
 978 {
 979   GstVaAV1Dec *self = GST_VA_AV1_DEC (decoder);
 980
 981   _clear_internal_pool (self);
 982
 983   return gst_va_base_dec_close (GST_VIDEO_DECODER (decoder));
 984 }
 985
 986 static void
 987 gst_va_av1_dec_init (GTypeInstance * instance, gpointer g_class)
 988 {
 989   gst_va_base_dec_init (GST_VA_BASE_DEC (instance), GST_CAT_DEFAULT);
 990 }
 991
 992 static void
 993 gst_va_av1_dec_dispose (GObject * object)
 994 {
 995   gst_va_base_dec_close (GST_VIDEO_DECODER (object));
 996   G_OBJECT_CLASS (parent_class)->dispose (object);
 997 }
 998
 999 static void
1000 gst_va_av1_dec_class_init (gpointer g_class, gpointer class_data)
1001 {
1002   GstCaps *src_doc_caps, *sink_doc_caps;
1003   GObjectClass *gobject_class = G_OBJECT_CLASS (g_class);
1004   GstElementClass *element_class = GST_ELEMENT_CLASS (g_class);
1005   GstAV1DecoderClass *av1decoder_class = GST_AV1_DECODER_CLASS (g_class);
1006   GstVideoDecoderClass *decoder_class = GST_VIDEO_DECODER_CLASS (g_class);
1007   struct CData *cdata = class_data;
1008   gchar *long_name;
1009
1010   if (cdata->description) {
1011     long_name = g_strdup_printf ("VA-API AV1 Decoder in %s",
1012         cdata->description);
1013   } else {
1014     long_name = g_strdup ("VA-API AV1 Decoder");
1015   }
1016
1017   gst_element_class_set_metadata (element_class, long_name,
1018       "Codec/Decoder/Video/Hardware",
1019       "VA-API based AV1 video decoder", "He Junyan <junyan.he@intel.com>");
1020
1021   sink_doc_caps = gst_caps_from_string (sink_caps_str);
1022   src_doc_caps = gst_caps_from_string (src_caps_str);
1023
1024   parent_class = g_type_class_peek_parent (g_class);
1025
1026   /**
1027    * GstVaAV1Dec:device-path:
1028    *
1029    * It shows the DRM device path used for the VA operation, if any.
1030    *
1031    * Since: 1.22
1032    */
1033   gst_va_base_dec_class_init (GST_VA_BASE_DEC_CLASS (g_class), AV1,
1034       cdata->render_device_path, cdata->sink_caps, cdata->src_caps,
1035       src_doc_caps, sink_doc_caps);
1036
1037   gobject_class->dispose = gst_va_av1_dec_dispose;
1038
1039   decoder_class->getcaps = GST_DEBUG_FUNCPTR (gst_va_av1_dec_getcaps);
1040   decoder_class->negotiate = GST_DEBUG_FUNCPTR (gst_va_av1_dec_negotiate);
1041   decoder_class->close = GST_DEBUG_FUNCPTR (gst_va_av1_dec_close);
1042   decoder_class->start = GST_DEBUG_FUNCPTR (gst_va_av1_dec_start);
1043
1044   av1decoder_class->new_sequence =
1045       GST_DEBUG_FUNCPTR (gst_va_av1_dec_new_sequence);
1046   av1decoder_class->new_picture =
1047       GST_DEBUG_FUNCPTR (gst_va_av1_dec_new_picture);
1048   av1decoder_class->duplicate_picture =
1049       GST_DEBUG_FUNCPTR (gst_va_av1_dec_duplicate_picture);
1050   av1decoder_class->start_picture =
1051       GST_DEBUG_FUNCPTR (gst_va_av1_dec_start_picture);
1052   av1decoder_class->decode_tile =
1053       GST_DEBUG_FUNCPTR (gst_va_av1_dec_decode_tile);
1054   av1decoder_class->end_picture =
1055       GST_DEBUG_FUNCPTR (gst_va_av1_dec_end_picture);
1056   av1decoder_class->output_picture =
1057       GST_DEBUG_FUNCPTR (gst_va_av1_dec_output_picture);
1058
1059   g_free (long_name);
1060   g_free (cdata->description);
1061   g_free (cdata->render_device_path);
1062   gst_caps_unref (cdata->src_caps);
1063   gst_caps_unref (cdata->sink_caps);
1064   g_free (cdata);
1065 }
1066
1067 static gpointer
1068 _register_debug_category (gpointer data)
1069 {
1070   GST_DEBUG_CATEGORY_INIT (gst_va_av1dec_debug, "vaav1dec", 0,
1071       "VA AV1 decoder");
1072
1073   return NULL;
1074 }
1075
1076 gboolean
1077 gst_va_av1_dec_register (GstPlugin * plugin, GstVaDevice * device,
1078     GstCaps * sink_caps, GstCaps * src_caps, guint rank)
1079 {
1080   static GOnce debug_once = G_ONCE_INIT;
1081   GType type;
1082   GTypeInfo type_info = {
1083     .class_size = sizeof (GstVaAV1DecClass),
1084     .class_init = gst_va_av1_dec_class_init,
1085     .instance_size = sizeof (GstVaAV1Dec),
1086     .instance_init = gst_va_av1_dec_init,
1087   };
1088   struct CData *cdata;
1089   gboolean ret;
1090   gchar *type_name, *feature_name;
1091
1092   g_return_val_if_fail (GST_IS_PLUGIN (plugin), FALSE);
1093   g_return_val_if_fail (GST_IS_VA_DEVICE (device), FALSE);
1094   g_return_val_if_fail (GST_IS_CAPS (sink_caps), FALSE);
1095   g_return_val_if_fail (GST_IS_CAPS (src_caps), FALSE);
1096
1097   cdata = g_new (struct CData, 1);
1098   cdata->description = NULL;
1099   cdata->render_device_path = g_strdup (device->render_device_path);
1100   cdata->sink_caps = _complete_sink_caps (sink_caps);
1101   cdata->src_caps = gst_caps_ref (src_caps);
1102
1103   /* class data will be leaked if the element never gets instantiated */
1104   GST_MINI_OBJECT_FLAG_SET (cdata->sink_caps,
1105       GST_MINI_OBJECT_FLAG_MAY_BE_LEAKED);
1106   GST_MINI_OBJECT_FLAG_SET (src_caps, GST_MINI_OBJECT_FLAG_MAY_BE_LEAKED);
1107
1108   type_info.class_data = cdata;
1109
1110   /* The first decoder to be registered should use a constant name,
1111    * like vaav1dec, for any additional decoders, we create unique
1112    * names, using inserting the render device name. */
1113   if (device->index == 0) {
1114     type_name = g_strdup ("GstVaAV1Dec");
1115     feature_name = g_strdup ("vaav1dec");
1116   } else {
1117     gchar *basename = g_path_get_basename (device->render_device_path);
1118     type_name = g_strdup_printf ("GstVa%sAV1Dec", basename);
1119     feature_name = g_strdup_printf ("va%sav1dec", basename);
1120     cdata->description = basename;
1121
1122     /* lower rank for non-first device */
1123     if (rank > 0)
1124       rank--;
1125   }
1126
1127   g_once (&debug_once, _register_debug_category, NULL);
1128
1129   type = g_type_register_static (GST_TYPE_AV1_DECODER,
1130       type_name, &type_info, 0);
1131
1132   ret = gst_element_register (plugin, feature_name, rank, type);
1133
1134   g_free (type_name);
1135   g_free (feature_name);
1136
1137   return ret;
1138 }