libavcodec/vaapi_decode.c

   1 /*
   2  * This file is part of Libav.
   3  *
   4  * Libav is free software; you can redistribute it and/or
   5  * modify it under the terms of the GNU Lesser General Public
   6  * License as published by the Free Software Foundation; either
   7  * version 2.1 of the License, or (at your option) any later version.
   8  *
   9  * Libav is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12  * Lesser General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU Lesser General Public
  15  * License along with Libav; if not, write to the Free Software
  16  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  17  */
  18
  19 #include "libavutil/avassert.h"
  20 #include "libavutil/common.h"
  21 #include "libavutil/pixdesc.h"
  22
  23 #include "avcodec.h"
  24 #include "decode.h"
  25 #include "internal.h"
  26 #include "vaapi_decode.h"
  27
  28
  29 int ff_vaapi_decode_make_param_buffer(AVCodecContext *avctx,
  30                                       VAAPIDecodePicture *pic,
  31                                       int type,
  32                                       const void *data,
  33                                       size_t size)
  34 {
  35     VAAPIDecodeContext *ctx = avctx->internal->hwaccel_priv_data;
  36     VAStatus vas;
  37     VABufferID buffer;
  38
  39     av_assert0(pic->nb_param_buffers + 1 <= MAX_PARAM_BUFFERS);
  40
  41     vas = vaCreateBuffer(ctx->hwctx->display, ctx->va_context,
  42                          type, size, 1, (void*)data, &buffer);
  43     if (vas != VA_STATUS_SUCCESS) {
  44         av_log(avctx, AV_LOG_ERROR, "Failed to create parameter "
  45                "buffer (type %d): %d (%s).\n",
  46                type, vas, vaErrorStr(vas));
  47         return AVERROR(EIO);
  48     }
  49
  50     pic->param_buffers[pic->nb_param_buffers++] = buffer;
  51
  52     av_log(avctx, AV_LOG_DEBUG, "Param buffer (type %d, %zu bytes) "
  53            "is %#x.\n", type, size, buffer);
  54     return 0;
  55 }
  56
  57
  58 int ff_vaapi_decode_make_slice_buffer(AVCodecContext *avctx,
  59                                       VAAPIDecodePicture *pic,
  60                                       const void *params_data,
  61                                       size_t params_size,
  62                                       const void *slice_data,
  63                                       size_t slice_size)
  64 {
  65     VAAPIDecodeContext *ctx = avctx->internal->hwaccel_priv_data;
  66     VAStatus vas;
  67     int index;
  68
  69     av_assert0(pic->nb_slices <= pic->slices_allocated);
  70     if (pic->nb_slices == pic->slices_allocated) {
  71         if (pic->slices_allocated > 0)
  72             pic->slices_allocated *= 2;
  73         else
  74             pic->slices_allocated = 64;
  75
  76         pic->slice_buffers =
  77             av_realloc_array(pic->slice_buffers,
  78                              pic->slices_allocated,
  79                              2 * sizeof(*pic->slice_buffers));
  80         if (!pic->slice_buffers)
  81             return AVERROR(ENOMEM);
  82     }
  83     av_assert0(pic->nb_slices + 1 <= pic->slices_allocated);
  84
  85     index = 2 * pic->nb_slices;
  86
  87     vas = vaCreateBuffer(ctx->hwctx->display, ctx->va_context,
  88                          VASliceParameterBufferType,
  89                          params_size, 1, (void*)params_data,
  90                          &pic->slice_buffers[index]);
  91     if (vas != VA_STATUS_SUCCESS) {
  92         av_log(avctx, AV_LOG_ERROR, "Failed to create slice "
  93                "parameter buffer: %d (%s).\n", vas, vaErrorStr(vas));
  94         return AVERROR(EIO);
  95     }
  96
  97     av_log(avctx, AV_LOG_DEBUG, "Slice %d param buffer (%zu bytes) "
  98            "is %#x.\n", pic->nb_slices, params_size,
  99            pic->slice_buffers[index]);
 100
 101     vas = vaCreateBuffer(ctx->hwctx->display, ctx->va_context,
 102                          VASliceDataBufferType,
 103                          slice_size, 1, (void*)slice_data,
 104                          &pic->slice_buffers[index + 1]);
 105     if (vas != VA_STATUS_SUCCESS) {
 106         av_log(avctx, AV_LOG_ERROR, "Failed to create slice "
 107                "data buffer (size %zu): %d (%s).\n",
 108                slice_size, vas, vaErrorStr(vas));
 109         vaDestroyBuffer(ctx->hwctx->display,
 110                         pic->slice_buffers[index]);
 111         return AVERROR(EIO);
 112     }
 113
 114     av_log(avctx, AV_LOG_DEBUG, "Slice %d data buffer (%zu bytes) "
 115            "is %#x.\n", pic->nb_slices, slice_size,
 116            pic->slice_buffers[index + 1]);
 117
 118     ++pic->nb_slices;
 119     return 0;
 120 }
 121
 122 static void ff_vaapi_decode_destroy_buffers(AVCodecContext *avctx,
 123                                             VAAPIDecodePicture *pic)
 124 {
 125     VAAPIDecodeContext *ctx = avctx->internal->hwaccel_priv_data;
 126     VAStatus vas;
 127     int i;
 128
 129     for (i = 0; i < pic->nb_param_buffers; i++) {
 130         vas = vaDestroyBuffer(ctx->hwctx->display,
 131                               pic->param_buffers[i]);
 132         if (vas != VA_STATUS_SUCCESS) {
 133             av_log(avctx, AV_LOG_ERROR, "Failed to destroy "
 134                    "parameter buffer %#x: %d (%s).\n",
 135                    pic->param_buffers[i], vas, vaErrorStr(vas));
 136         }
 137     }
 138
 139     for (i = 0; i < 2 * pic->nb_slices; i++) {
 140         vas = vaDestroyBuffer(ctx->hwctx->display,
 141                               pic->slice_buffers[i]);
 142         if (vas != VA_STATUS_SUCCESS) {
 143             av_log(avctx, AV_LOG_ERROR, "Failed to destroy slice "
 144                    "slice buffer %#x: %d (%s).\n",
 145                    pic->slice_buffers[i], vas, vaErrorStr(vas));
 146         }
 147     }
 148 }
 149
 150 int ff_vaapi_decode_issue(AVCodecContext *avctx,
 151                           VAAPIDecodePicture *pic)
 152 {
 153     VAAPIDecodeContext *ctx = avctx->internal->hwaccel_priv_data;
 154     VAStatus vas;
 155     int err;
 156
 157     av_log(avctx, AV_LOG_DEBUG, "Decode to surface %#x.\n",
 158            pic->output_surface);
 159
 160     vas = vaBeginPicture(ctx->hwctx->display, ctx->va_context,
 161                          pic->output_surface);
 162     if (vas != VA_STATUS_SUCCESS) {
 163         av_log(avctx, AV_LOG_ERROR, "Failed to begin picture decode "
 164                "issue: %d (%s).\n", vas, vaErrorStr(vas));
 165         err = AVERROR(EIO);
 166         goto fail_with_picture;
 167     }
 168
 169     vas = vaRenderPicture(ctx->hwctx->display, ctx->va_context,
 170                           pic->param_buffers, pic->nb_param_buffers);
 171     if (vas != VA_STATUS_SUCCESS) {
 172         av_log(avctx, AV_LOG_ERROR, "Failed to upload decode "
 173                "parameters: %d (%s).\n", vas, vaErrorStr(vas));
 174         err = AVERROR(EIO);
 175         goto fail_with_picture;
 176     }
 177
 178     vas = vaRenderPicture(ctx->hwctx->display, ctx->va_context,
 179                           pic->slice_buffers, 2 * pic->nb_slices);
 180     if (vas != VA_STATUS_SUCCESS) {
 181         av_log(avctx, AV_LOG_ERROR, "Failed to upload slices: "
 182                "%d (%s).\n", vas, vaErrorStr(vas));
 183         err = AVERROR(EIO);
 184         goto fail_with_picture;
 185     }
 186
 187     vas = vaEndPicture(ctx->hwctx->display, ctx->va_context);
 188     if (vas != VA_STATUS_SUCCESS) {
 189         av_log(avctx, AV_LOG_ERROR, "Failed to end picture decode "
 190                "issue: %d (%s).\n", vas, vaErrorStr(vas));
 191         err = AVERROR(EIO);
 192         if (ctx->hwctx->driver_quirks &
 193             AV_VAAPI_DRIVER_QUIRK_RENDER_PARAM_BUFFERS)
 194             goto fail;
 195         else
 196             goto fail_at_end;
 197     }
 198
 199     if (ctx->hwctx->driver_quirks &
 200         AV_VAAPI_DRIVER_QUIRK_RENDER_PARAM_BUFFERS)
 201         ff_vaapi_decode_destroy_buffers(avctx, pic);
 202
 203     pic->nb_param_buffers = 0;
 204     pic->nb_slices        = 0;
 205     pic->slices_allocated = 0;
 206     av_freep(&pic->slice_buffers);
 207
 208     return 0;
 209
 210 fail_with_picture:
 211     vas = vaEndPicture(ctx->hwctx->display, ctx->va_context);
 212     if (vas != VA_STATUS_SUCCESS) {
 213         av_log(avctx, AV_LOG_ERROR, "Failed to end picture decode "
 214                "after error: %d (%s).\n", vas, vaErrorStr(vas));
 215     }
 216 fail:
 217     ff_vaapi_decode_destroy_buffers(avctx, pic);
 218 fail_at_end:
 219     return err;
 220 }
 221
 222 int ff_vaapi_decode_cancel(AVCodecContext *avctx,
 223                            VAAPIDecodePicture *pic)
 224 {
 225     ff_vaapi_decode_destroy_buffers(avctx, pic);
 226
 227     pic->nb_param_buffers = 0;
 228     pic->nb_slices        = 0;
 229     pic->slices_allocated = 0;
 230     av_freep(&pic->slice_buffers);
 231
 232     return 0;
 233 }
 234
 235 static const struct {
 236     enum AVCodecID codec_id;
 237     int codec_profile;
 238     VAProfile va_profile;
 239 } vaapi_profile_map[] = {
 240 #define MAP(c, p, v) { AV_CODEC_ID_ ## c, FF_PROFILE_ ## p, VAProfile ## v }
 241     MAP(MPEG2VIDEO,  MPEG2_SIMPLE,    MPEG2Simple ),
 242     MAP(MPEG2VIDEO,  MPEG2_MAIN,      MPEG2Main   ),
 243     MAP(H263,        UNKNOWN,         H263Baseline),
 244     MAP(MPEG4,       MPEG4_SIMPLE,    MPEG4Simple ),
 245     MAP(MPEG4,       MPEG4_ADVANCED_SIMPLE,
 246                                MPEG4AdvancedSimple),
 247     MAP(MPEG4,       MPEG4_MAIN,      MPEG4Main   ),
 248     MAP(H264,        H264_CONSTRAINED_BASELINE,
 249                            H264ConstrainedBaseline),
 250     MAP(H264,        H264_BASELINE,   H264Baseline),
 251     MAP(H264,        H264_MAIN,       H264Main    ),
 252     MAP(H264,        H264_HIGH,       H264High    ),
 253 #if VA_CHECK_VERSION(0, 37, 0)
 254     MAP(HEVC,        HEVC_MAIN,       HEVCMain    ),
 255     MAP(HEVC,        HEVC_MAIN_10,    HEVCMain10  ),
 256 #endif
 257     MAP(WMV3,        VC1_SIMPLE,      VC1Simple   ),
 258     MAP(WMV3,        VC1_MAIN,        VC1Main     ),
 259     MAP(WMV3,        VC1_COMPLEX,     VC1Advanced ),
 260     MAP(WMV3,        VC1_ADVANCED,    VC1Advanced ),
 261     MAP(VC1,         VC1_SIMPLE,      VC1Simple   ),
 262     MAP(VC1,         VC1_MAIN,        VC1Main     ),
 263     MAP(VC1,         VC1_COMPLEX,     VC1Advanced ),
 264     MAP(VC1,         VC1_ADVANCED,    VC1Advanced ),
 265 #if VA_CHECK_VERSION(0, 35, 0)
 266     MAP(VP8,         UNKNOWN,       VP8Version0_3 ),
 267 #endif
 268 #if VA_CHECK_VERSION(0, 38, 0)
 269     MAP(VP9,         VP9_0,           VP9Profile0 ),
 270 #endif
 271 #undef MAP
 272 };
 273
 274 /*
 275  * Set *va_config and the frames_ref fields from the current codec parameters
 276  * in avctx.
 277  */
 278 static int vaapi_decode_make_config(AVCodecContext *avctx,
 279                                     AVBufferRef *device_ref,
 280                                     VAConfigID *va_config,
 281                                     AVBufferRef *frames_ref)
 282 {
 283     AVVAAPIHWConfig       *hwconfig    = NULL;
 284     AVHWFramesConstraints *constraints = NULL;
 285     VAStatus vas;
 286     int err, i, j;
 287     const AVCodecDescriptor *codec_desc;
 288     VAProfile profile, *profile_list = NULL;
 289     int profile_count, exact_match, alt_profile;
 290     const AVPixFmtDescriptor *sw_desc, *desc;
 291
 292     AVHWDeviceContext    *device = (AVHWDeviceContext*)device_ref->data;
 293     AVVAAPIDeviceContext *hwctx = device->hwctx;
 294
 295     codec_desc = avcodec_descriptor_get(avctx->codec_id);
 296     if (!codec_desc) {
 297         err = AVERROR(EINVAL);
 298         goto fail;
 299     }
 300
 301     profile_count = vaMaxNumProfiles(hwctx->display);
 302     profile_list  = av_malloc_array(profile_count,
 303                                     sizeof(VAProfile));
 304     if (!profile_list) {
 305         err = AVERROR(ENOMEM);
 306         goto fail;
 307     }
 308
 309     vas = vaQueryConfigProfiles(hwctx->display,
 310                                 profile_list, &profile_count);
 311     if (vas != VA_STATUS_SUCCESS) {
 312         av_log(avctx, AV_LOG_ERROR, "Failed to query profiles: "
 313                "%d (%s).\n", vas, vaErrorStr(vas));
 314         err = AVERROR(ENOSYS);
 315         goto fail;
 316     }
 317
 318     profile = VAProfileNone;
 319     exact_match = 0;
 320
 321     for (i = 0; i < FF_ARRAY_ELEMS(vaapi_profile_map); i++) {
 322         int profile_match = 0;
 323         if (avctx->codec_id != vaapi_profile_map[i].codec_id)
 324             continue;
 325         if (avctx->profile == vaapi_profile_map[i].codec_profile ||
 326             vaapi_profile_map[i].codec_profile == FF_PROFILE_UNKNOWN)
 327             profile_match = 1;
 328         profile = vaapi_profile_map[i].va_profile;
 329         for (j = 0; j < profile_count; j++) {
 330             if (profile == profile_list[j]) {
 331                 exact_match = profile_match;
 332                 break;
 333             }
 334         }
 335         if (j < profile_count) {
 336             if (exact_match)
 337                 break;
 338             alt_profile = vaapi_profile_map[i].codec_profile;
 339         }
 340     }
 341     av_freep(&profile_list);
 342
 343     if (profile == VAProfileNone) {
 344         av_log(avctx, AV_LOG_ERROR, "No support for codec %s "
 345                "profile %d.\n", codec_desc->name, avctx->profile);
 346         err = AVERROR(ENOSYS);
 347         goto fail;
 348     }
 349     if (!exact_match) {
 350         if (avctx->hwaccel_flags &
 351             AV_HWACCEL_FLAG_ALLOW_PROFILE_MISMATCH) {
 352             av_log(avctx, AV_LOG_VERBOSE, "Codec %s profile %d not "
 353                    "supported for hardware decode.\n",
 354                    codec_desc->name, avctx->profile);
 355             av_log(avctx, AV_LOG_WARNING, "Using possibly-"
 356                    "incompatible profile %d instead.\n",
 357                    alt_profile);
 358         } else {
 359             av_log(avctx, AV_LOG_VERBOSE, "Codec %s profile %d not "
 360                    "supported for hardware decode.\n",
 361                    codec_desc->name, avctx->profile);
 362             err = AVERROR(EINVAL);
 363             goto fail;
 364         }
 365     }
 366
 367     vas = vaCreateConfig(hwctx->display, profile,
 368                          VAEntrypointVLD, NULL, 0,
 369                          va_config);
 370     if (vas != VA_STATUS_SUCCESS) {
 371         av_log(avctx, AV_LOG_ERROR, "Failed to create decode "
 372                "configuration: %d (%s).\n", vas, vaErrorStr(vas));
 373         err = AVERROR(EIO);
 374         goto fail;
 375     }
 376
 377     hwconfig = av_hwdevice_hwconfig_alloc(device_ref);
 378     if (!hwconfig) {
 379         err = AVERROR(ENOMEM);
 380         goto fail;
 381     }
 382     hwconfig->config_id = *va_config;
 383
 384     constraints =
 385         av_hwdevice_get_hwframe_constraints(device_ref, hwconfig);
 386     if (!constraints) {
 387         err = AVERROR(ENOMEM);
 388         goto fail;
 389     }
 390
 391     if (avctx->coded_width  < constraints->min_width  ||
 392         avctx->coded_height < constraints->min_height ||
 393         avctx->coded_width  > constraints->max_width  ||
 394         avctx->coded_height > constraints->max_height) {
 395         av_log(avctx, AV_LOG_ERROR, "Hardware does not support image "
 396                "size %dx%d (constraints: width %d-%d height %d-%d).\n",
 397                avctx->coded_width, avctx->coded_height,
 398                constraints->min_width,  constraints->max_width,
 399                constraints->min_height, constraints->max_height);
 400         err = AVERROR(EINVAL);
 401         goto fail;
 402     }
 403     if (!constraints->valid_sw_formats ||
 404         constraints->valid_sw_formats[0] == AV_PIX_FMT_NONE) {
 405         av_log(avctx, AV_LOG_ERROR, "Hardware does not offer any "
 406                "usable surface formats.\n");
 407         err = AVERROR(EINVAL);
 408         goto fail;
 409     }
 410
 411     if (frames_ref) {
 412         AVHWFramesContext *frames = (AVHWFramesContext *)frames_ref->data;
 413
 414         frames->format = AV_PIX_FMT_VAAPI;
 415         frames->width = avctx->coded_width;
 416         frames->height = avctx->coded_height;
 417
 418         // Find the first format in the list which matches the expected
 419         // bit depth and subsampling.  If none are found (this can happen
 420         // when 10-bit streams are decoded to 8-bit surfaces, for example)
 421         // then just take the first format on the list.
 422         frames->sw_format = constraints->valid_sw_formats[0];
 423         sw_desc = av_pix_fmt_desc_get(avctx->sw_pix_fmt);
 424         for (i = 0; constraints->valid_sw_formats[i] != AV_PIX_FMT_NONE; i++) {
 425             desc = av_pix_fmt_desc_get(constraints->valid_sw_formats[i]);
 426             if (desc->nb_components != sw_desc->nb_components ||
 427                 desc->log2_chroma_w != sw_desc->log2_chroma_w ||
 428                 desc->log2_chroma_h != sw_desc->log2_chroma_h)
 429                 continue;
 430             for (j = 0; j < desc->nb_components; j++) {
 431                 if (desc->comp[j].depth != sw_desc->comp[j].depth)
 432                     break;
 433             }
 434             if (j < desc->nb_components)
 435                 continue;
 436             frames->sw_format = constraints->valid_sw_formats[i];
 437             break;
 438         }
 439
 440         frames->initial_pool_size = 1;
 441         // Add per-codec number of surfaces used for storing reference frames.
 442         switch (avctx->codec_id) {
 443         case AV_CODEC_ID_H264:
 444         case AV_CODEC_ID_HEVC:
 445             frames->initial_pool_size += 16;
 446             break;
 447         case AV_CODEC_ID_VP9:
 448             frames->initial_pool_size += 8;
 449             break;
 450         case AV_CODEC_ID_VP8:
 451             frames->initial_pool_size += 3;
 452             break;
 453         default:
 454             frames->initial_pool_size += 2;
 455         }
 456     }
 457
 458     av_hwframe_constraints_free(&constraints);
 459     av_freep(&hwconfig);
 460
 461     return 0;
 462
 463 fail:
 464     av_hwframe_constraints_free(&constraints);
 465     av_freep(&hwconfig);
 466     if (*va_config != VA_INVALID_ID) {
 467         vaDestroyConfig(hwctx->display, *va_config);
 468         *va_config = VA_INVALID_ID;
 469     }
 470     av_freep(&profile_list);
 471     return err;
 472 }
 473
 474 int ff_vaapi_common_frame_params(AVCodecContext *avctx,
 475                                  AVBufferRef *hw_frames_ctx)
 476 {
 477     AVHWFramesContext *hw_frames = (AVHWFramesContext *)hw_frames_ctx->data;
 478     AVHWDeviceContext *device_ctx = hw_frames->device_ctx;
 479     AVVAAPIDeviceContext *hwctx;
 480     VAConfigID va_config = VA_INVALID_ID;
 481     int err;
 482
 483     if (device_ctx->type != AV_HWDEVICE_TYPE_VAAPI)
 484         return AVERROR(EINVAL);
 485     hwctx = device_ctx->hwctx;
 486
 487     err = vaapi_decode_make_config(avctx, hw_frames->device_ref, &va_config,
 488                                    hw_frames_ctx);
 489     if (err)
 490         return err;
 491
 492     if (va_config != VA_INVALID_ID)
 493         vaDestroyConfig(hwctx->display, va_config);
 494
 495     return 0;
 496 }
 497
 498 int ff_vaapi_decode_init(AVCodecContext *avctx)
 499 {
 500     VAAPIDecodeContext *ctx = avctx->internal->hwaccel_priv_data;
 501     VAStatus vas;
 502     int err;
 503
 504     ctx->va_config  = VA_INVALID_ID;
 505     ctx->va_context = VA_INVALID_ID;
 506
 507 #if FF_API_VAAPI_CONTEXT
 508     if (avctx->hwaccel_context) {
 509         av_log(avctx, AV_LOG_WARNING, "Using deprecated struct "
 510                "vaapi_context in decode.\n");
 511
 512         ctx->have_old_context = 1;
 513         ctx->old_context = avctx->hwaccel_context;
 514
 515         // Really we only want the VAAPI device context, but this
 516         // allocates a whole generic device context because we don't
 517         // have any other way to determine how big it should be.
 518         ctx->device_ref =
 519             av_hwdevice_ctx_alloc(AV_HWDEVICE_TYPE_VAAPI);
 520         if (!ctx->device_ref) {
 521             err = AVERROR(ENOMEM);
 522             goto fail;
 523         }
 524         ctx->device = (AVHWDeviceContext*)ctx->device_ref->data;
 525         ctx->hwctx  = ctx->device->hwctx;
 526
 527         ctx->hwctx->display = ctx->old_context->display;
 528
 529         // The old VAAPI decode setup assumed this quirk was always
 530         // present, so set it here to avoid the behaviour changing.
 531         ctx->hwctx->driver_quirks =
 532             AV_VAAPI_DRIVER_QUIRK_RENDER_PARAM_BUFFERS;
 533
 534     }
 535 #endif
 536
 537 #if FF_API_VAAPI_CONTEXT
 538     if (ctx->have_old_context) {
 539         ctx->va_config  = ctx->old_context->config_id;
 540         ctx->va_context = ctx->old_context->context_id;
 541
 542         av_log(avctx, AV_LOG_DEBUG, "Using user-supplied decoder "
 543                "context: %#x/%#x.\n", ctx->va_config, ctx->va_context);
 544     } else {
 545 #endif
 546
 547     err = ff_decode_get_hw_frames_ctx(avctx, AV_HWDEVICE_TYPE_VAAPI);
 548     if (err < 0)
 549         goto fail;
 550
 551     ctx->frames = (AVHWFramesContext*)avctx->hw_frames_ctx->data;
 552     ctx->hwfc   = ctx->frames->hwctx;
 553     ctx->device = ctx->frames->device_ctx;
 554     ctx->hwctx  = ctx->device->hwctx;
 555
 556     err = vaapi_decode_make_config(avctx, ctx->frames->device_ref,
 557                                    &ctx->va_config, avctx->hw_frames_ctx);
 558     if (err)
 559         goto fail;
 560
 561     vas = vaCreateContext(ctx->hwctx->display, ctx->va_config,
 562                           avctx->coded_width, avctx->coded_height,
 563                           VA_PROGRESSIVE,
 564                           ctx->hwfc->surface_ids,
 565                           ctx->hwfc->nb_surfaces,
 566                           &ctx->va_context);
 567     if (vas != VA_STATUS_SUCCESS) {
 568         av_log(avctx, AV_LOG_ERROR, "Failed to create decode "
 569                "context: %d (%s).\n", vas, vaErrorStr(vas));
 570         err = AVERROR(EIO);
 571         goto fail;
 572     }
 573
 574     av_log(avctx, AV_LOG_DEBUG, "Decode context initialised: "
 575            "%#x/%#x.\n", ctx->va_config, ctx->va_context);
 576 #if FF_API_VAAPI_CONTEXT
 577     }
 578 #endif
 579
 580     return 0;
 581
 582 fail:
 583     ff_vaapi_decode_uninit(avctx);
 584     return err;
 585 }
 586
 587 int ff_vaapi_decode_uninit(AVCodecContext *avctx)
 588 {
 589     VAAPIDecodeContext *ctx = avctx->internal->hwaccel_priv_data;
 590     VAStatus vas;
 591
 592 #if FF_API_VAAPI_CONTEXT
 593     if (ctx->have_old_context) {
 594         av_buffer_unref(&ctx->device_ref);
 595     } else {
 596 #endif
 597
 598     if (ctx->va_context != VA_INVALID_ID) {
 599         vas = vaDestroyContext(ctx->hwctx->display, ctx->va_context);
 600         if (vas != VA_STATUS_SUCCESS) {
 601             av_log(avctx, AV_LOG_ERROR, "Failed to destroy decode "
 602                    "context %#x: %d (%s).\n",
 603                    ctx->va_context, vas, vaErrorStr(vas));
 604         }
 605     }
 606     if (ctx->va_config != VA_INVALID_ID) {
 607         vas = vaDestroyConfig(ctx->hwctx->display, ctx->va_config);
 608         if (vas != VA_STATUS_SUCCESS) {
 609             av_log(avctx, AV_LOG_ERROR, "Failed to destroy decode "
 610                    "configuration %#x: %d (%s).\n",
 611                    ctx->va_config, vas, vaErrorStr(vas));
 612         }
 613     }
 614
 615 #if FF_API_VAAPI_CONTEXT
 616     }
 617 #endif
 618
 619     return 0;
 620 }