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) {
 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
 295   gst_clear_caps (&caps);
 296   gst_object_unref (allocator);
 297
 298   if (!pool) {
 299     GST_WARNING_OBJECT (self, "Failed to create internal pool");
 300     return NULL;
 301   }
 302
 303   gst_buffer_pool_set_active (pool, TRUE);
 304
 305   return pool;
 306 }
 307
 308 static GstFlowReturn
 309 gst_va_av1_dec_new_sequence (GstAV1Decoder * decoder,
 310     const GstAV1SequenceHeaderOBU * seq_hdr, gint max_dpb_size)
 311 {
 312   GstVaAV1Dec *self = GST_VA_AV1_DEC (decoder);
 313   GstVaBaseDec *base = GST_VA_BASE_DEC (decoder);
 314   GstVideoInfo *info = &base->output_info;
 315   VAProfile profile;
 316   guint rt_format;
 317   gint width, height;
 318
 319   GST_LOG_OBJECT (self, "new sequence");
 320
 321   profile = _get_profile (self, seq_hdr);
 322   if (profile == VAProfileNone)
 323     return GST_FLOW_NOT_NEGOTIATED;
 324
 325   rt_format = _get_rtformat (self, profile, seq_hdr);
 326   if (!rt_format)
 327     return GST_FLOW_NOT_NEGOTIATED;
 328
 329   self->seq = *seq_hdr;
 330
 331   width = seq_hdr->max_frame_width_minus_1 + 1;
 332   height = seq_hdr->max_frame_height_minus_1 + 1;
 333
 334   if (!gst_va_decoder_config_is_equal (base->decoder, profile,
 335           rt_format, width, height)) {
 336     _clear_internal_pool (self);
 337     self->preferred_format = GST_VIDEO_FORMAT_UNKNOWN;
 338
 339     base->profile = profile;
 340     base->rt_format = rt_format;
 341     GST_VIDEO_INFO_WIDTH (info) = base->width = width;
 342     GST_VIDEO_INFO_HEIGHT (info) = base->height = height;
 343     base->need_negotiation = TRUE;
 344     base->min_buffers = 7 + 4;  /* dpb size + scratch surfaces */
 345     base->need_valign = FALSE;
 346   }
 347
 348   g_clear_pointer (&base->input_state, gst_video_codec_state_unref);
 349   base->input_state = gst_video_codec_state_ref (decoder->input_state);
 350
 351   return GST_FLOW_OK;
 352 }
 353
 354 static inline GstFlowReturn
 355 _acquire_internal_buffer (GstVaAV1Dec * self, GstVideoCodecFrame * frame)
 356 {
 357   GstVaBaseDec *base = GST_VA_BASE_DEC (self);
 358   GstFlowReturn ret;
 359
 360   if (!self->internal_pool) {
 361     self->internal_pool =
 362         _create_internal_pool (self, base->width, base->height);
 363     if (!self->internal_pool)
 364       return GST_FLOW_ERROR;
 365   }
 366
 367   if (base->need_negotiation) {
 368     if (!gst_video_decoder_negotiate (GST_VIDEO_DECODER (self)))
 369       return GST_FLOW_NOT_NEGOTIATED;
 370   }
 371
 372   ret = gst_buffer_pool_acquire_buffer (self->internal_pool,
 373       &frame->output_buffer, NULL);
 374   if (ret != GST_FLOW_OK) {
 375     GST_WARNING_OBJECT (self,
 376         "Failed to allocated output buffer from internal pool, return %s",
 377         gst_flow_get_name (ret));
 378   }
 379
 380   return ret;
 381 }
 382
 383 static GstFlowReturn
 384 gst_va_av1_dec_new_picture (GstAV1Decoder * decoder,
 385     GstVideoCodecFrame * frame, GstAV1Picture * picture)
 386 {
 387   GstVaAV1Dec *self = GST_VA_AV1_DEC (decoder);
 388   GstVaBaseDec *base = GST_VA_BASE_DEC (decoder);
 389   GstAV1FrameHeaderOBU *frame_hdr = &picture->frame_hdr;
 390   GstVaDecodePicture *pic;
 391   GstVideoInfo *info = &base->output_info;
 392   GstFlowReturn ret;
 393
 394   /* Only output the highest spatial layer. For non output pictures,
 395      we just use internal pool, then no negotiation needed. */
 396   if (picture->spatial_id < decoder->highest_spatial_layer) {
 397     ret = _acquire_internal_buffer (self, frame);
 398     if (ret != GST_FLOW_OK)
 399       return ret;
 400   } else {
 401     if (frame_hdr->upscaled_width != GST_VIDEO_INFO_WIDTH (info)
 402         || frame_hdr->frame_height != GST_VIDEO_INFO_HEIGHT (info)) {
 403       GST_VIDEO_INFO_WIDTH (info) = frame_hdr->upscaled_width;
 404       GST_VIDEO_INFO_HEIGHT (info) = frame_hdr->frame_height;
 405
 406       if (GST_VIDEO_INFO_WIDTH (info) < base->width
 407           || GST_VIDEO_INFO_HEIGHT (info) < base->height) {
 408         base->need_valign = TRUE;
 409         /* *INDENT-OFF* */
 410         base->valign = (GstVideoAlignment) {
 411           .padding_bottom = base->height - GST_VIDEO_INFO_HEIGHT (info),
 412           .padding_right = base->width - GST_VIDEO_INFO_WIDTH (info),
 413         };
 414         /* *INDENT-ON* */
 415       }
 416
 417       base->need_negotiation = TRUE;
 418     }
 419
 420     ret = gst_va_base_dec_prepare_output_frame (base, frame);
 421     if (ret != GST_FLOW_OK) {
 422       GST_WARNING_OBJECT (self, "Failed to allocated output buffer, return %s",
 423           gst_flow_get_name (ret));
 424       return ret;
 425     }
 426   }
 427
 428   if (picture->apply_grain) {
 429     if (!gst_va_buffer_create_aux_surface (frame->output_buffer)) {
 430       GST_WARNING_OBJECT (self,
 431           "Failed to allocated aux surface for buffer %p",
 432           frame->output_buffer);
 433       return GST_FLOW_ERROR;
 434     }
 435   }
 436
 437   pic = gst_va_decode_picture_new (base->decoder, frame->output_buffer);
 438
 439   gst_av1_picture_set_user_data (picture, pic,
 440       (GDestroyNotify) gst_va_decode_picture_free);
 441
 442   if (picture->apply_grain) {
 443     GST_LOG_OBJECT (self, "New va decode picture %p - %#x(aux: %#x)", pic,
 444         gst_va_decode_picture_get_surface (pic),
 445         gst_va_decode_picture_get_aux_surface (pic));
 446   } else {
 447     GST_LOG_OBJECT (self, "New va decode picture %p - %#x", pic,
 448         gst_va_decode_picture_get_surface (pic));
 449   }
 450
 451   return GST_FLOW_OK;
 452 }
 453
 454 static GstAV1Picture *
 455 gst_va_av1_dec_duplicate_picture (GstAV1Decoder * decoder,
 456     GstVideoCodecFrame * frame, GstAV1Picture * picture)
 457 {
 458   GstVaAV1Dec *self = GST_VA_AV1_DEC (decoder);
 459   GstVaBaseDec *base = GST_VA_BASE_DEC (decoder);
 460   GstVaDecodePicture *pic;
 461   GstVaDecodePicture *new_pic;
 462   GstAV1Picture *new_picture;
 463
 464   pic = gst_av1_picture_get_user_data (picture);
 465   if (!pic) {
 466     GST_ERROR_OBJECT (self, "Parent picture does not have a va picture");
 467     return NULL;
 468   }
 469
 470   new_picture = gst_av1_picture_new ();
 471   g_assert (pic->gstbuffer);
 472   new_pic = gst_va_decode_picture_new (base->decoder, pic->gstbuffer);
 473
 474   GST_LOG_OBJECT (self, "Duplicate output with buffer %" GST_PTR_FORMAT
 475       " (surface %#x)", pic, gst_va_decode_picture_get_surface (pic));
 476
 477   gst_av1_picture_set_user_data (new_picture, new_pic,
 478       (GDestroyNotify) gst_va_decode_picture_free);
 479
 480   return new_picture;
 481 }
 482
 483 static void
 484 _setup_segment_info (VADecPictureParameterBufferAV1 * pic_param,
 485     GstAV1FrameHeaderOBU * frame_header)
 486 {
 487   guint i, j;
 488   uint8_t feature_mask;
 489
 490   for (i = 0; i < GST_AV1_MAX_SEGMENTS; i++)
 491     for (j = 0; j < GST_AV1_SEG_LVL_MAX; j++)
 492       pic_param->seg_info.feature_data[i][j] =
 493           frame_header->segmentation_params.feature_data[i][j];
 494
 495   for (i = 0; i < GST_AV1_MAX_SEGMENTS; i++) {
 496     feature_mask = 0;
 497     for (j = 0; j < GST_AV1_SEG_LVL_MAX; j++) {
 498       if (frame_header->segmentation_params.feature_enabled[i][j])
 499         feature_mask |= 1 << j;
 500     }
 501     pic_param->seg_info.feature_mask[i] = feature_mask;
 502   }
 503 }
 504
 505 static void
 506 _setup_film_grain_info (VADecPictureParameterBufferAV1 * pic_param,
 507     GstAV1FrameHeaderOBU * frame_header)
 508 {
 509   guint i;
 510
 511   if (!frame_header->film_grain_params.apply_grain)
 512     return;
 513
 514   pic_param->film_grain_info.num_y_points =
 515       frame_header->film_grain_params.num_y_points;
 516   for (i = 0; i < frame_header->film_grain_params.num_y_points; i++) {
 517     pic_param->film_grain_info.point_y_value[i] =
 518         frame_header->film_grain_params.point_y_value[i];
 519     pic_param->film_grain_info.point_y_scaling[i] =
 520         frame_header->film_grain_params.point_y_scaling[i];
 521   }
 522
 523   pic_param->film_grain_info.num_cb_points =
 524       frame_header->film_grain_params.num_cb_points;
 525   for (i = 0; i < frame_header->film_grain_params.num_cb_points; i++) {
 526     pic_param->film_grain_info.point_cb_value[i] =
 527         frame_header->film_grain_params.point_cb_value[i];
 528     pic_param->film_grain_info.point_cb_scaling[i] =
 529         frame_header->film_grain_params.point_cb_scaling[i];
 530   }
 531
 532   pic_param->film_grain_info.num_cr_points =
 533       frame_header->film_grain_params.num_cr_points;
 534   for (i = 0; i < frame_header->film_grain_params.num_cr_points; i++) {
 535     pic_param->film_grain_info.point_cr_value[i] =
 536         frame_header->film_grain_params.point_cr_value[i];
 537     pic_param->film_grain_info.point_cr_scaling[i] =
 538         frame_header->film_grain_params.point_cr_scaling[i];
 539   }
 540
 541
 542   if (pic_param->film_grain_info.num_y_points) {
 543     for (i = 0; i < 24; i++) {
 544       pic_param->film_grain_info.ar_coeffs_y[i] =
 545           frame_header->film_grain_params.ar_coeffs_y_plus_128[i] - 128;
 546     }
 547   }
 548   if (frame_header->film_grain_params.chroma_scaling_from_luma
 549       || pic_param->film_grain_info.num_cb_points) {
 550     for (i = 0; i < GST_AV1_MAX_NUM_POS_LUMA; i++) {
 551       pic_param->film_grain_info.ar_coeffs_cb[i] =
 552           frame_header->film_grain_params.ar_coeffs_cb_plus_128[i] - 128;
 553     }
 554   }
 555   if (frame_header->film_grain_params.chroma_scaling_from_luma
 556       || pic_param->film_grain_info.num_cr_points) {
 557     for (i = 0; i < GST_AV1_MAX_NUM_POS_LUMA; i++) {
 558       pic_param->film_grain_info.ar_coeffs_cr[i] =
 559           frame_header->film_grain_params.ar_coeffs_cr_plus_128[i] - 128;
 560     }
 561   }
 562 }
 563
 564 static void
 565 _setup_loop_filter_info (VADecPictureParameterBufferAV1 * pic_param,
 566     GstAV1FrameHeaderOBU * frame_header)
 567 {
 568   guint i;
 569
 570   pic_param->filter_level[0] =
 571       frame_header->loop_filter_params.loop_filter_level[0];
 572   pic_param->filter_level[1] =
 573       frame_header->loop_filter_params.loop_filter_level[1];
 574   pic_param->filter_level_u =
 575       frame_header->loop_filter_params.loop_filter_level[2];
 576   pic_param->filter_level_v =
 577       frame_header->loop_filter_params.loop_filter_level[3];
 578
 579   for (i = 0; i < GST_AV1_TOTAL_REFS_PER_FRAME; i++)
 580     pic_param->ref_deltas[i] =
 581         frame_header->loop_filter_params.loop_filter_ref_deltas[i];
 582   for (i = 0; i < 2; i++)
 583     pic_param->mode_deltas[i] =
 584         frame_header->loop_filter_params.loop_filter_mode_deltas[i];
 585 }
 586
 587 static void
 588 _setup_quantization_info (VADecPictureParameterBufferAV1 * pic_param,
 589     GstAV1FrameHeaderOBU * frame_header)
 590 {
 591   pic_param->qmatrix_fields.bits.using_qmatrix =
 592       frame_header->quantization_params.using_qmatrix;
 593   if (frame_header->quantization_params.using_qmatrix) {
 594     pic_param->qmatrix_fields.bits.qm_y =
 595         frame_header->quantization_params.qm_y;
 596     pic_param->qmatrix_fields.bits.qm_u =
 597         frame_header->quantization_params.qm_u;
 598     pic_param->qmatrix_fields.bits.qm_v =
 599         frame_header->quantization_params.qm_v;
 600   } else {
 601     pic_param->qmatrix_fields.bits.qm_y = 0;
 602     pic_param->qmatrix_fields.bits.qm_u = 0;
 603     pic_param->qmatrix_fields.bits.qm_v = 0;
 604   }
 605 }
 606
 607 static void
 608 _setup_cdef_info (VADecPictureParameterBufferAV1 * pic_param,
 609     GstAV1FrameHeaderOBU * frame_header, guint8 num_planes)
 610 {
 611   guint8 sec_strength;
 612   guint i;
 613
 614   pic_param->cdef_damping_minus_3 = frame_header->cdef_params.cdef_damping - 3;
 615   pic_param->cdef_bits = frame_header->cdef_params.cdef_bits;
 616   for (i = 0; i < GST_AV1_CDEF_MAX; i++) {
 617     sec_strength = frame_header->cdef_params.cdef_y_sec_strength[i];
 618     g_assert (sec_strength <= 4);
 619     /* may need to minus 1 in order to merge with primary value. */
 620     if (sec_strength == 4)
 621       sec_strength--;
 622
 623     pic_param->cdef_y_strengths[i] =
 624         ((frame_header->cdef_params.cdef_y_pri_strength[i] & 0xf) << 2) |
 625         (sec_strength & 0x03);
 626   }
 627   if (num_planes > 1) {
 628     for (i = 0; i < GST_AV1_CDEF_MAX; i++) {
 629       sec_strength = frame_header->cdef_params.cdef_uv_sec_strength[i];
 630       g_assert (sec_strength <= 4);
 631       /* may need to minus 1 in order to merge with primary value. */
 632       if (sec_strength == 4)
 633         sec_strength--;
 634
 635       pic_param->cdef_uv_strengths[i] =
 636           ((frame_header->cdef_params.cdef_uv_pri_strength[i] & 0xf) << 2) |
 637           (sec_strength & 0x03);
 638     }
 639   } else {
 640     for (i = 0; i < GST_AV1_CDEF_MAX; i++) {
 641       pic_param->cdef_uv_strengths[i] = 0;
 642     }
 643   }
 644 }
 645
 646 static void
 647 _setup_global_motion_info (VADecPictureParameterBufferAV1 * pic_param,
 648     GstAV1FrameHeaderOBU * frame_header)
 649 {
 650   guint i, j;
 651
 652   for (i = 0; i < 7; i++) {
 653     /* assuming VAAV1TransformationType and GstAV1WarpModelType are
 654      * equivalent */
 655     pic_param->wm[i].wmtype = (VAAV1TransformationType)
 656         frame_header->global_motion_params.gm_type[GST_AV1_REF_LAST_FRAME + i];
 657
 658     for (j = 0; j < 6; j++)
 659       pic_param->wm[i].wmmat[j] =
 660           frame_header->global_motion_params.gm_params
 661           [GST_AV1_REF_LAST_FRAME + i][j];
 662
 663     pic_param->wm[i].wmmat[6] = 0;
 664     pic_param->wm[i].wmmat[7] = 0;
 665
 666     pic_param->wm[i].invalid =
 667         frame_header->global_motion_params.invalid[GST_AV1_REF_LAST_FRAME + i];
 668   }
 669 }
 670
 671 static GstFlowReturn
 672 gst_va_av1_dec_start_picture (GstAV1Decoder * decoder, GstAV1Picture * picture,
 673     GstAV1Dpb * dpb)
 674 {
 675   GstVaAV1Dec *self = GST_VA_AV1_DEC (decoder);
 676   GstVaBaseDec *base = GST_VA_BASE_DEC (decoder);
 677   GstAV1FrameHeaderOBU *frame_header = &picture->frame_hdr;
 678   GstAV1SequenceHeaderOBU *seq_header = &self->seq;
 679   VADecPictureParameterBufferAV1 pic_param = { };
 680   GstVaDecodePicture *va_pic;
 681   guint i;
 682
 683   va_pic = gst_av1_picture_get_user_data (picture);
 684   g_assert (va_pic);
 685
 686   /* *INDENT-OFF* */
 687   pic_param = (VADecPictureParameterBufferAV1){
 688     .profile = seq_header->seq_profile,
 689     .order_hint_bits_minus_1 = seq_header->order_hint_bits_minus_1,
 690     .matrix_coefficients = seq_header->color_config.matrix_coefficients,
 691     .seq_info_fields.fields = {
 692       .still_picture = seq_header->still_picture,
 693       .use_128x128_superblock = seq_header->use_128x128_superblock,
 694       .enable_filter_intra = seq_header->enable_filter_intra,
 695       .enable_intra_edge_filter = seq_header->enable_intra_edge_filter,
 696       .enable_interintra_compound = seq_header->enable_interintra_compound,
 697       .enable_masked_compound = seq_header->enable_masked_compound,
 698       .enable_dual_filter = seq_header->enable_dual_filter,
 699       .enable_order_hint = seq_header->enable_order_hint,
 700       .enable_jnt_comp = seq_header->enable_jnt_comp,
 701       .enable_cdef = seq_header->enable_cdef,
 702       .mono_chrome = seq_header->color_config.mono_chrome,
 703       .color_range = seq_header->color_config.color_range,
 704       .subsampling_x = seq_header->color_config.subsampling_x,
 705       .subsampling_y = seq_header->color_config.subsampling_y,
 706       .film_grain_params_present = seq_header->film_grain_params_present,
 707     },
 708     .anchor_frames_num = 0,
 709     .anchor_frames_list = NULL,
 710     .frame_width_minus1 = frame_header->upscaled_width - 1,
 711     .frame_height_minus1 = frame_header->frame_height - 1,
 712     .output_frame_width_in_tiles_minus_1 = 0,
 713     .output_frame_height_in_tiles_minus_1 = 0,
 714     .order_hint = frame_header->order_hint,
 715     /* Segmentation */
 716     .seg_info.segment_info_fields.bits = {
 717       .enabled = frame_header->segmentation_params.segmentation_enabled,
 718       .update_map = frame_header->segmentation_params.segmentation_update_map,
 719       .temporal_update =
 720         frame_header->segmentation_params.segmentation_temporal_update,
 721       .update_data =
 722         frame_header->segmentation_params.segmentation_update_data,
 723     },
 724     /* FilmGrain */
 725     .film_grain_info = {
 726       .film_grain_info_fields.bits = {
 727         .apply_grain = frame_header->film_grain_params.apply_grain,
 728         .chroma_scaling_from_luma =
 729           frame_header->film_grain_params.chroma_scaling_from_luma,
 730         .grain_scaling_minus_8 =
 731           frame_header->film_grain_params.grain_scaling_minus_8,
 732         .ar_coeff_lag = frame_header->film_grain_params.ar_coeff_lag,
 733         .ar_coeff_shift_minus_6 =
 734           frame_header->film_grain_params.ar_coeff_shift_minus_6,
 735         .grain_scale_shift = frame_header->film_grain_params.grain_scale_shift,
 736         .overlap_flag = frame_header->film_grain_params.overlap_flag,
 737         .clip_to_restricted_range =
 738           frame_header->film_grain_params.clip_to_restricted_range,
 739       },
 740       .grain_seed = frame_header->film_grain_params.grain_seed,
 741       .cb_mult = frame_header->film_grain_params.cb_mult,
 742       .cb_luma_mult = frame_header->film_grain_params.cb_luma_mult,
 743       .cb_offset = frame_header->film_grain_params.cb_offset,
 744       .cr_mult = frame_header->film_grain_params.cr_mult,
 745       .cr_luma_mult = frame_header->film_grain_params.cr_luma_mult,
 746       .cr_offset = frame_header->film_grain_params.cr_offset,
 747     },
 748     .tile_cols = frame_header->tile_info.tile_cols,
 749     .tile_rows = frame_header->tile_info.tile_rows,
 750     .context_update_tile_id = frame_header->tile_info.context_update_tile_id,
 751     .pic_info_fields.bits = {
 752       .frame_type = frame_header->frame_type,
 753       .show_frame = frame_header->show_frame,
 754       .showable_frame = frame_header->showable_frame,
 755       .error_resilient_mode = frame_header->error_resilient_mode,
 756       .disable_cdf_update = frame_header->disable_cdf_update,
 757       .allow_screen_content_tools = frame_header->allow_screen_content_tools,
 758       .force_integer_mv = frame_header->force_integer_mv,
 759       .allow_intrabc = frame_header->allow_intrabc,
 760       .use_superres = frame_header->use_superres,
 761       .allow_high_precision_mv = frame_header->allow_high_precision_mv,
 762       .is_motion_mode_switchable = frame_header->is_motion_mode_switchable,
 763       .use_ref_frame_mvs = frame_header->use_ref_frame_mvs,
 764       .disable_frame_end_update_cdf =
 765         frame_header->disable_frame_end_update_cdf,
 766       .uniform_tile_spacing_flag =
 767         frame_header->tile_info.uniform_tile_spacing_flag,
 768       .allow_warped_motion = frame_header->allow_warped_motion,
 769     },
 770     .superres_scale_denominator = frame_header->superres_denom,
 771     .interp_filter = frame_header->interpolation_filter,
 772     /* loop filter */
 773     .loop_filter_info_fields.bits = {
 774       .sharpness_level =
 775         frame_header->loop_filter_params.loop_filter_sharpness,
 776       .mode_ref_delta_enabled =
 777         frame_header->loop_filter_params.loop_filter_delta_enabled,
 778       .mode_ref_delta_update =
 779         frame_header->loop_filter_params.loop_filter_delta_update,
 780     },
 781     .mode_control_fields.bits = {
 782       .delta_lf_present_flag =
 783         frame_header->loop_filter_params.delta_lf_present,
 784       .log2_delta_lf_res = frame_header->loop_filter_params.delta_lf_res,
 785       .delta_lf_multi = frame_header->loop_filter_params.delta_lf_multi,
 786       .delta_q_present_flag =
 787         frame_header->quantization_params.delta_q_present,
 788       .log2_delta_q_res = frame_header->quantization_params.delta_q_res,
 789       .tx_mode = frame_header->tx_mode,
 790       .reference_select = frame_header->reference_select,
 791       .reduced_tx_set_used = frame_header->reduced_tx_set,
 792       .skip_mode_present = frame_header->skip_mode_present,
 793     },
 794     /* quantization */
 795     .base_qindex = frame_header->quantization_params.base_q_idx,
 796     .y_dc_delta_q = frame_header->quantization_params.delta_q_y_dc,
 797     .u_dc_delta_q = frame_header->quantization_params.delta_q_u_dc,
 798     .u_ac_delta_q = frame_header->quantization_params.delta_q_u_ac,
 799     .v_dc_delta_q = frame_header->quantization_params.delta_q_v_dc,
 800     .v_ac_delta_q = frame_header->quantization_params.delta_q_v_ac,
 801     /* loop restoration */
 802     .loop_restoration_fields.bits = {
 803       .yframe_restoration_type =
 804         frame_header->loop_restoration_params.frame_restoration_type[0],
 805       .cbframe_restoration_type =
 806         frame_header->loop_restoration_params.frame_restoration_type[1],
 807       .crframe_restoration_type =
 808         frame_header->loop_restoration_params.frame_restoration_type[2],
 809       .lr_unit_shift = frame_header->loop_restoration_params.lr_unit_shift,
 810       .lr_uv_shift = frame_header->loop_restoration_params.lr_uv_shift,
 811     },
 812   };
 813   /* *INDENT-ON* */
 814
 815   if (seq_header->bit_depth == 8) {
 816     pic_param.bit_depth_idx = 0;
 817   } else if (seq_header->bit_depth == 10) {
 818     pic_param.bit_depth_idx = 1;
 819   } else if (seq_header->bit_depth == 12) {
 820     pic_param.bit_depth_idx = 2;
 821   } else {
 822     g_assert_not_reached ();
 823   }
 824
 825   if (frame_header->film_grain_params.apply_grain) {
 826     pic_param.current_frame = gst_va_decode_picture_get_aux_surface (va_pic);
 827     pic_param.current_display_picture =
 828         gst_va_decode_picture_get_surface (va_pic);
 829   } else {
 830     pic_param.current_frame = gst_va_decode_picture_get_surface (va_pic);
 831     pic_param.current_display_picture = VA_INVALID_SURFACE;
 832   }
 833
 834   for (i = 0; i < GST_AV1_NUM_REF_FRAMES; i++) {
 835     if (dpb->pic_list[i]) {
 836       if (dpb->pic_list[i]->apply_grain) {
 837         pic_param.ref_frame_map[i] = gst_va_decode_picture_get_aux_surface
 838             (gst_av1_picture_get_user_data (dpb->pic_list[i]));
 839       } else {
 840         pic_param.ref_frame_map[i] = gst_va_decode_picture_get_surface
 841             (gst_av1_picture_get_user_data (dpb->pic_list[i]));
 842       }
 843     } else {
 844       pic_param.ref_frame_map[i] = VA_INVALID_SURFACE;
 845     }
 846   }
 847   for (i = 0; i < GST_AV1_REFS_PER_FRAME; i++) {
 848     pic_param.ref_frame_idx[i] = frame_header->ref_frame_idx[i];
 849   }
 850   pic_param.primary_ref_frame = frame_header->primary_ref_frame;
 851
 852   _setup_segment_info (&pic_param, frame_header);
 853   _setup_film_grain_info (&pic_param, frame_header);
 854
 855   for (i = 0; i < 63; i++) {
 856     pic_param.width_in_sbs_minus_1[i] =
 857         frame_header->tile_info.width_in_sbs_minus_1[i];
 858     pic_param.height_in_sbs_minus_1[i] =
 859         frame_header->tile_info.height_in_sbs_minus_1[i];
 860   }
 861
 862   _setup_loop_filter_info (&pic_param, frame_header);
 863   _setup_quantization_info (&pic_param, frame_header);
 864   _setup_cdef_info (&pic_param, frame_header, seq_header->num_planes);
 865   _setup_global_motion_info (&pic_param, frame_header);
 866
 867   if (!gst_va_decoder_add_param_buffer (base->decoder, va_pic,
 868           VAPictureParameterBufferType, &pic_param, sizeof (pic_param)))
 869     return GST_FLOW_ERROR;
 870
 871   return GST_FLOW_OK;
 872 }
 873
 874 static GstFlowReturn
 875 gst_va_av1_dec_decode_tile (GstAV1Decoder * decoder, GstAV1Picture * picture,
 876     GstAV1Tile * tile)
 877 {
 878   GstVaAV1Dec *self = GST_VA_AV1_DEC (decoder);
 879   GstVaBaseDec *base = GST_VA_BASE_DEC (decoder);
 880   GstAV1TileGroupOBU *tile_group = &tile->tile_group;
 881   GstVaDecodePicture *va_pic;
 882   guint i;
 883   VASliceParameterBufferAV1 slice_param[GST_AV1_MAX_TILE_COUNT];
 884
 885   GST_TRACE_OBJECT (self, "-");
 886
 887   for (i = 0; i < tile_group->tg_end - tile_group->tg_start + 1; i++) {
 888     slice_param[i] = (VASliceParameterBufferAV1) {
 889     };
 890     slice_param[i].slice_data_size =
 891         tile_group->entry[tile_group->tg_start + i].tile_size;
 892     slice_param[i].slice_data_offset =
 893         tile_group->entry[tile_group->tg_start + i].tile_offset;
 894     slice_param[i].tile_row =
 895         tile_group->entry[tile_group->tg_start + i].tile_row;
 896     slice_param[i].tile_column =
 897         tile_group->entry[tile_group->tg_start + i].tile_col;
 898     slice_param[i].slice_data_flag = 0;
 899   }
 900
 901   va_pic = gst_av1_picture_get_user_data (picture);
 902
 903   if (!gst_va_decoder_add_slice_buffer_with_n_params (base->decoder, va_pic,
 904           slice_param, sizeof (VASliceParameterBufferAV1), i, tile->obu.data,
 905           tile->obu.obu_size)) {
 906     return GST_FLOW_ERROR;
 907   }
 908
 909   return GST_FLOW_OK;
 910 }
 911
 912 static GstFlowReturn
 913 gst_va_av1_dec_end_picture (GstAV1Decoder * decoder, GstAV1Picture * picture)
 914 {
 915   GstVaAV1Dec *self = GST_VA_AV1_DEC (decoder);
 916   GstVaBaseDec *base = GST_VA_BASE_DEC (decoder);
 917   GstVaDecodePicture *va_pic;
 918
 919   GST_LOG_OBJECT (self, "end picture %p, (system_frame_number %d)",
 920       picture, picture->system_frame_number);
 921
 922   va_pic = gst_av1_picture_get_user_data (picture);
 923
 924   if (!gst_va_decoder_decode_with_aux_surface (base->decoder, va_pic,
 925           picture->apply_grain)) {
 926     return GST_FLOW_ERROR;
 927   }
 928
 929   return GST_FLOW_OK;
 930 }
 931
 932 static GstFlowReturn
 933 gst_va_av1_dec_output_picture (GstAV1Decoder * decoder,
 934     GstVideoCodecFrame * frame, GstAV1Picture * picture)
 935 {
 936   GstVaAV1Dec *self = GST_VA_AV1_DEC (decoder);
 937   GstVaBaseDec *base = GST_VA_BASE_DEC (decoder);
 938   GstVideoDecoder *vdec = GST_VIDEO_DECODER (decoder);
 939   gboolean ret;
 940
 941   g_assert (picture->frame_hdr.show_frame ||
 942       picture->frame_hdr.show_existing_frame);
 943
 944   GST_LOG_OBJECT (self,
 945       "Outputting picture %p (system_frame_number %d)",
 946       picture, picture->system_frame_number);
 947
 948   if (picture->frame_hdr.show_existing_frame) {
 949     GstVaDecodePicture *pic;
 950
 951     g_assert (!frame->output_buffer);
 952     pic = gst_av1_picture_get_user_data (picture);
 953     frame->output_buffer = gst_buffer_ref (pic->gstbuffer);
 954   }
 955
 956   ret = gst_va_base_dec_process_output (base, frame, picture->discont_state, 0);
 957   gst_av1_picture_unref (picture);
 958
 959   if (ret)
 960     return gst_video_decoder_finish_frame (vdec, frame);
 961   return GST_FLOW_ERROR;
 962 }
 963
 964 static gboolean
 965 gst_va_av1_dec_start (GstVideoDecoder * decoder)
 966 {
 967   GstVaAV1Dec *self = GST_VA_AV1_DEC (decoder);
 968
 969   self->preferred_format = GST_VIDEO_FORMAT_UNKNOWN;
 970
 971   return GST_VIDEO_DECODER_CLASS (parent_class)->start (decoder);
 972 }
 973
 974 static gboolean
 975 gst_va_av1_dec_close (GstVideoDecoder * decoder)
 976 {
 977   GstVaAV1Dec *self = GST_VA_AV1_DEC (decoder);
 978
 979   _clear_internal_pool (self);
 980
 981   return gst_va_base_dec_close (GST_VIDEO_DECODER (decoder));
 982 }
 983
 984 static void
 985 gst_va_av1_dec_init (GTypeInstance * instance, gpointer g_class)
 986 {
 987   gst_va_base_dec_init (GST_VA_BASE_DEC (instance), GST_CAT_DEFAULT);
 988 }
 989
 990 static void
 991 gst_va_av1_dec_dispose (GObject * object)
 992 {
 993   gst_va_base_dec_close (GST_VIDEO_DECODER (object));
 994   G_OBJECT_CLASS (parent_class)->dispose (object);
 995 }
 996
 997 static void
 998 gst_va_av1_dec_class_init (gpointer g_class, gpointer class_data)
 999 {
1000   GstCaps *src_doc_caps, *sink_doc_caps;
1001   GObjectClass *gobject_class = G_OBJECT_CLASS (g_class);
1002   GstElementClass *element_class = GST_ELEMENT_CLASS (g_class);
1003   GstAV1DecoderClass *av1decoder_class = GST_AV1_DECODER_CLASS (g_class);
1004   GstVideoDecoderClass *decoder_class = GST_VIDEO_DECODER_CLASS (g_class);
1005   struct CData *cdata = class_data;
1006   gchar *long_name;
1007
1008   if (cdata->description) {
1009     long_name = g_strdup_printf ("VA-API AV1 Decoder in %s",
1010         cdata->description);
1011   } else {
1012     long_name = g_strdup ("VA-API AV1 Decoder");
1013   }
1014
1015   gst_element_class_set_metadata (element_class, long_name,
1016       "Codec/Decoder/Video/Hardware",
1017       "VA-API based AV1 video decoder", "He Junyan <junyan.he@intel.com>");
1018
1019   sink_doc_caps = gst_caps_from_string (sink_caps_str);
1020   src_doc_caps = gst_caps_from_string (src_caps_str);
1021
1022   parent_class = g_type_class_peek_parent (g_class);
1023
1024   /**
1025    * GstVaAV1Dec:device-path:
1026    *
1027    * It shows the DRM device path used for the VA operation, if any.
1028    *
1029    * Since: 1.22
1030    */
1031   gst_va_base_dec_class_init (GST_VA_BASE_DEC_CLASS (g_class), AV1,
1032       cdata->render_device_path, cdata->sink_caps, cdata->src_caps,
1033       src_doc_caps, sink_doc_caps);
1034
1035   gobject_class->dispose = gst_va_av1_dec_dispose;
1036
1037   decoder_class->getcaps = GST_DEBUG_FUNCPTR (gst_va_av1_dec_getcaps);
1038   decoder_class->negotiate = GST_DEBUG_FUNCPTR (gst_va_av1_dec_negotiate);
1039   decoder_class->close = GST_DEBUG_FUNCPTR (gst_va_av1_dec_close);
1040   decoder_class->start = GST_DEBUG_FUNCPTR (gst_va_av1_dec_start);
1041
1042   av1decoder_class->new_sequence =
1043       GST_DEBUG_FUNCPTR (gst_va_av1_dec_new_sequence);
1044   av1decoder_class->new_picture =
1045       GST_DEBUG_FUNCPTR (gst_va_av1_dec_new_picture);
1046   av1decoder_class->duplicate_picture =
1047       GST_DEBUG_FUNCPTR (gst_va_av1_dec_duplicate_picture);
1048   av1decoder_class->start_picture =
1049       GST_DEBUG_FUNCPTR (gst_va_av1_dec_start_picture);
1050   av1decoder_class->decode_tile =
1051       GST_DEBUG_FUNCPTR (gst_va_av1_dec_decode_tile);
1052   av1decoder_class->end_picture =
1053       GST_DEBUG_FUNCPTR (gst_va_av1_dec_end_picture);
1054   av1decoder_class->output_picture =
1055       GST_DEBUG_FUNCPTR (gst_va_av1_dec_output_picture);
1056
1057   g_free (long_name);
1058   g_free (cdata->description);
1059   g_free (cdata->render_device_path);
1060   gst_caps_unref (cdata->src_caps);
1061   gst_caps_unref (cdata->sink_caps);
1062   g_free (cdata);
1063 }
1064
1065 static gpointer
1066 _register_debug_category (gpointer data)
1067 {
1068   GST_DEBUG_CATEGORY_INIT (gst_va_av1dec_debug, "vaav1dec", 0,
1069       "VA AV1 decoder");
1070
1071   return NULL;
1072 }
1073
1074 gboolean
1075 gst_va_av1_dec_register (GstPlugin * plugin, GstVaDevice * device,
1076     GstCaps * sink_caps, GstCaps * src_caps, guint rank)
1077 {
1078   static GOnce debug_once = G_ONCE_INIT;
1079   GType type;
1080   GTypeInfo type_info = {
1081     .class_size = sizeof (GstVaAV1DecClass),
1082     .class_init = gst_va_av1_dec_class_init,
1083     .instance_size = sizeof (GstVaAV1Dec),
1084     .instance_init = gst_va_av1_dec_init,
1085   };
1086   struct CData *cdata;
1087   gboolean ret;
1088   gchar *type_name, *feature_name;
1089
1090   g_return_val_if_fail (GST_IS_PLUGIN (plugin), FALSE);
1091   g_return_val_if_fail (GST_IS_VA_DEVICE (device), FALSE);
1092   g_return_val_if_fail (GST_IS_CAPS (sink_caps), FALSE);
1093   g_return_val_if_fail (GST_IS_CAPS (src_caps), FALSE);
1094
1095   cdata = g_new (struct CData, 1);
1096   cdata->description = NULL;
1097   cdata->render_device_path = g_strdup (device->render_device_path);
1098   cdata->sink_caps = _complete_sink_caps (sink_caps);
1099   cdata->src_caps = gst_caps_ref (src_caps);
1100
1101   /* class data will be leaked if the element never gets instantiated */
1102   GST_MINI_OBJECT_FLAG_SET (cdata->sink_caps,
1103       GST_MINI_OBJECT_FLAG_MAY_BE_LEAKED);
1104   GST_MINI_OBJECT_FLAG_SET (src_caps, GST_MINI_OBJECT_FLAG_MAY_BE_LEAKED);
1105
1106   type_info.class_data = cdata;
1107
1108   /* The first decoder to be registered should use a constant name,
1109    * like vaav1dec, for any additional decoders, we create unique
1110    * names, using inserting the render device name. */
1111   if (device->index == 0) {
1112     type_name = g_strdup ("GstVaAV1Dec");
1113     feature_name = g_strdup ("vaav1dec");
1114   } else {
1115     gchar *basename = g_path_get_basename (device->render_device_path);
1116     type_name = g_strdup_printf ("GstVa%sAV1Dec", basename);
1117     feature_name = g_strdup_printf ("va%sav1dec", basename);
1118     cdata->description = basename;
1119
1120     /* lower rank for non-first device */
1121     if (rank > 0)
1122       rank--;
1123   }
1124
1125   g_once (&debug_once, _register_debug_category, NULL);
1126
1127   type = g_type_register_static (GST_TYPE_AV1_DECODER,
1128       type_name, &type_info, 0);
1129
1130   ret = gst_element_register (plugin, feature_name, rank, type);
1131
1132   g_free (type_name);
1133   g_free (feature_name);
1134
1135   return ret;
1136 }