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 "internal.h"
  25 #include "vaapi_decode.h"
  26
  27
  28 int ff_vaapi_decode_make_param_buffer(AVCodecContext *avctx,
  29                                       VAAPIDecodePicture *pic,
  30                                       int type,
  31                                       const void *data,
  32                                       size_t size)
  33 {
  34     VAAPIDecodeContext *ctx = avctx->internal->hwaccel_priv_data;
  35     VAStatus vas;
  36     VABufferID buffer;
  37
  38     av_assert0(pic->nb_param_buffers + 1 <= MAX_PARAM_BUFFERS);
  39
  40     vas = vaCreateBuffer(ctx->hwctx->display, ctx->va_context,
  41                          type, size, 1, (void*)data, &buffer);
  42     if (vas != VA_STATUS_SUCCESS) {
  43         av_log(avctx, AV_LOG_ERROR, "Failed to create parameter "
  44                "buffer (type %d): %d (%s).\n",
  45                type, vas, vaErrorStr(vas));
  46         return AVERROR(EIO);
  47     }
  48
  49     pic->param_buffers[pic->nb_param_buffers++] = buffer;
  50
  51     av_log(avctx, AV_LOG_DEBUG, "Param buffer (type %d, %zu bytes) "
  52            "is %#x.\n", type, size, buffer);
  53     return 0;
  54 }
  55
  56
  57 int ff_vaapi_decode_make_slice_buffer(AVCodecContext *avctx,
  58                                       VAAPIDecodePicture *pic,
  59                                       const void *params_data,
  60                                       size_t params_size,
  61                                       const void *slice_data,
  62                                       size_t slice_size)
  63 {
  64     VAAPIDecodeContext *ctx = avctx->internal->hwaccel_priv_data;
  65     VAStatus vas;
  66     int index;
  67
  68     av_assert0(pic->nb_slices <= pic->slices_allocated);
  69     if (pic->nb_slices == pic->slices_allocated) {
  70         if (pic->slices_allocated > 0)
  71             pic->slices_allocated *= 2;
  72         else
  73             pic->slices_allocated = 64;
  74
  75         pic->slice_buffers =
  76             av_realloc_array(pic->slice_buffers,
  77                              pic->slices_allocated,
  78                              2 * sizeof(*pic->slice_buffers));
  79         if (!pic->slice_buffers)
  80             return AVERROR(ENOMEM);
  81     }
  82     av_assert0(pic->nb_slices + 1 <= pic->slices_allocated);
  83
  84     index = 2 * pic->nb_slices;
  85
  86     vas = vaCreateBuffer(ctx->hwctx->display, ctx->va_context,
  87                          VASliceParameterBufferType,
  88                          params_size, 1, (void*)params_data,
  89                          &pic->slice_buffers[index]);
  90     if (vas != VA_STATUS_SUCCESS) {
  91         av_log(avctx, AV_LOG_ERROR, "Failed to create slice "
  92                "parameter buffer: %d (%s).\n", vas, vaErrorStr(vas));
  93         return AVERROR(EIO);
  94     }
  95
  96     av_log(avctx, AV_LOG_DEBUG, "Slice %d param buffer (%zu bytes) "
  97            "is %#x.\n", pic->nb_slices, params_size,
  98            pic->slice_buffers[index]);
  99
 100     vas = vaCreateBuffer(ctx->hwctx->display, ctx->va_context,
 101                          VASliceDataBufferType,
 102                          slice_size, 1, (void*)slice_data,
 103                          &pic->slice_buffers[index + 1]);
 104     if (vas != VA_STATUS_SUCCESS) {
 105         av_log(avctx, AV_LOG_ERROR, "Failed to create slice "
 106                "data buffer (size %zu): %d (%s).\n",
 107                slice_size, vas, vaErrorStr(vas));
 108         vaDestroyBuffer(ctx->hwctx->display,
 109                         pic->slice_buffers[index]);
 110         return AVERROR(EIO);
 111     }
 112
 113     av_log(avctx, AV_LOG_DEBUG, "Slice %d data buffer (%zu bytes) "
 114            "is %#x.\n", pic->nb_slices, slice_size,
 115            pic->slice_buffers[index + 1]);
 116
 117     ++pic->nb_slices;
 118     return 0;
 119 }
 120
 121 static void ff_vaapi_decode_destroy_buffers(AVCodecContext *avctx,
 122                                             VAAPIDecodePicture *pic)
 123 {
 124     VAAPIDecodeContext *ctx = avctx->internal->hwaccel_priv_data;
 125     VAStatus vas;
 126     int i;
 127
 128     for (i = 0; i < pic->nb_param_buffers; i++) {
 129         vas = vaDestroyBuffer(ctx->hwctx->display,
 130                               pic->param_buffers[i]);
 131         if (vas != VA_STATUS_SUCCESS) {
 132             av_log(avctx, AV_LOG_ERROR, "Failed to destroy "
 133                    "parameter buffer %#x: %d (%s).\n",
 134                    pic->param_buffers[i], vas, vaErrorStr(vas));
 135         }
 136     }
 137
 138     for (i = 0; i < 2 * pic->nb_slices; i++) {
 139         vas = vaDestroyBuffer(ctx->hwctx->display,
 140                               pic->slice_buffers[i]);
 141         if (vas != VA_STATUS_SUCCESS) {
 142             av_log(avctx, AV_LOG_ERROR, "Failed to destroy slice "
 143                    "slice buffer %#x: %d (%s).\n",
 144                    pic->slice_buffers[i], vas, vaErrorStr(vas));
 145         }
 146     }
 147 }
 148
 149 int ff_vaapi_decode_issue(AVCodecContext *avctx,
 150                           VAAPIDecodePicture *pic)
 151 {
 152     VAAPIDecodeContext *ctx = avctx->internal->hwaccel_priv_data;
 153     VAStatus vas;
 154     int err;
 155
 156     av_log(avctx, AV_LOG_DEBUG, "Decode to surface %#x.\n",
 157            pic->output_surface);
 158
 159     vas = vaBeginPicture(ctx->hwctx->display, ctx->va_context,
 160                          pic->output_surface);
 161     if (vas != VA_STATUS_SUCCESS) {
 162         av_log(avctx, AV_LOG_ERROR, "Failed to begin picture decode "
 163                "issue: %d (%s).\n", vas, vaErrorStr(vas));
 164         err = AVERROR(EIO);
 165         goto fail_with_picture;
 166     }
 167
 168     vas = vaRenderPicture(ctx->hwctx->display, ctx->va_context,
 169                           pic->param_buffers, pic->nb_param_buffers);
 170     if (vas != VA_STATUS_SUCCESS) {
 171         av_log(avctx, AV_LOG_ERROR, "Failed to upload decode "
 172                "parameters: %d (%s).\n", vas, vaErrorStr(vas));
 173         err = AVERROR(EIO);
 174         goto fail_with_picture;
 175     }
 176
 177     vas = vaRenderPicture(ctx->hwctx->display, ctx->va_context,
 178                           pic->slice_buffers, 2 * pic->nb_slices);
 179     if (vas != VA_STATUS_SUCCESS) {
 180         av_log(avctx, AV_LOG_ERROR, "Failed to upload slices: "
 181                "%d (%s).\n", vas, vaErrorStr(vas));
 182         err = AVERROR(EIO);
 183         goto fail_with_picture;
 184     }
 185
 186     vas = vaEndPicture(ctx->hwctx->display, ctx->va_context);
 187     if (vas != VA_STATUS_SUCCESS) {
 188         av_log(avctx, AV_LOG_ERROR, "Failed to end picture decode "
 189                "issue: %d (%s).\n", vas, vaErrorStr(vas));
 190         err = AVERROR(EIO);
 191         if (ctx->hwctx->driver_quirks &
 192             AV_VAAPI_DRIVER_QUIRK_RENDER_PARAM_BUFFERS)
 193             goto fail;
 194         else
 195             goto fail_at_end;
 196     }
 197
 198     if (ctx->hwctx->driver_quirks &
 199         AV_VAAPI_DRIVER_QUIRK_RENDER_PARAM_BUFFERS)
 200         ff_vaapi_decode_destroy_buffers(avctx, pic);
 201
 202     pic->nb_param_buffers = 0;
 203     pic->nb_slices        = 0;
 204     pic->slices_allocated = 0;
 205     av_freep(&pic->slice_buffers);
 206
 207     return 0;
 208
 209 fail_with_picture:
 210     vas = vaEndPicture(ctx->hwctx->display, ctx->va_context);
 211     if (vas != VA_STATUS_SUCCESS) {
 212         av_log(avctx, AV_LOG_ERROR, "Failed to end picture decode "
 213                "after error: %d (%s).\n", vas, vaErrorStr(vas));
 214     }
 215 fail:
 216     ff_vaapi_decode_destroy_buffers(avctx, pic);
 217 fail_at_end:
 218     return err;
 219 }
 220
 221 int ff_vaapi_decode_cancel(AVCodecContext *avctx,
 222                            VAAPIDecodePicture *pic)
 223 {
 224     ff_vaapi_decode_destroy_buffers(avctx, pic);
 225
 226     pic->nb_param_buffers = 0;
 227     pic->nb_slices        = 0;
 228     pic->slices_allocated = 0;
 229     av_freep(&pic->slice_buffers);
 230
 231     return 0;
 232 }
 233
 234 static const struct {
 235     enum AVCodecID codec_id;
 236     int codec_profile;
 237     VAProfile va_profile;
 238 } vaapi_profile_map[] = {
 239 #define MAP(c, p, v) { AV_CODEC_ID_ ## c, FF_PROFILE_ ## p, VAProfile ## v }
 240     MAP(MPEG2VIDEO,  MPEG2_SIMPLE,    MPEG2Simple ),
 241     MAP(MPEG2VIDEO,  MPEG2_MAIN,      MPEG2Main   ),
 242     MAP(H263,        UNKNOWN,         H263Baseline),
 243     MAP(MPEG4,       MPEG4_SIMPLE,    MPEG4Simple ),
 244     MAP(MPEG4,       MPEG4_ADVANCED_SIMPLE,
 245                                MPEG4AdvancedSimple),
 246     MAP(MPEG4,       MPEG4_MAIN,      MPEG4Main   ),
 247     MAP(H264,        H264_CONSTRAINED_BASELINE,
 248                            H264ConstrainedBaseline),
 249     MAP(H264,        H264_BASELINE,   H264Baseline),
 250     MAP(H264,        H264_MAIN,       H264Main    ),
 251     MAP(H264,        H264_HIGH,       H264High    ),
 252 #if VA_CHECK_VERSION(0, 37, 0)
 253     MAP(HEVC,        HEVC_MAIN,       HEVCMain    ),
 254     MAP(HEVC,        HEVC_MAIN_10,    HEVCMain10  ),
 255 #endif
 256     MAP(WMV3,        VC1_SIMPLE,      VC1Simple   ),
 257     MAP(WMV3,        VC1_MAIN,        VC1Main     ),
 258     MAP(WMV3,        VC1_COMPLEX,     VC1Advanced ),
 259     MAP(WMV3,        VC1_ADVANCED,    VC1Advanced ),
 260     MAP(VC1,         VC1_SIMPLE,      VC1Simple   ),
 261     MAP(VC1,         VC1_MAIN,        VC1Main     ),
 262     MAP(VC1,         VC1_COMPLEX,     VC1Advanced ),
 263     MAP(VC1,         VC1_ADVANCED,    VC1Advanced ),
 264 #if VA_CHECK_VERSION(0, 35, 0)
 265     MAP(VP8,         UNKNOWN,       VP8Version0_3 ),
 266 #endif
 267 #if VA_CHECK_VERSION(0, 38, 0)
 268     MAP(VP9,         VP9_0,           VP9Profile0 ),
 269 #endif
 270 #undef MAP
 271 };
 272
 273 static int vaapi_decode_make_config(AVCodecContext *avctx)
 274 {
 275     VAAPIDecodeContext *ctx = avctx->internal->hwaccel_priv_data;
 276
 277     AVVAAPIHWConfig       *hwconfig    = NULL;
 278     AVHWFramesConstraints *constraints = NULL;
 279     VAStatus vas;
 280     int err, i, j;
 281     const AVCodecDescriptor *codec_desc;
 282     VAProfile profile, *profile_list = NULL;
 283     int profile_count, exact_match, alt_profile;
 284     const AVPixFmtDescriptor *sw_desc, *desc;
 285
 286     codec_desc = avcodec_descriptor_get(avctx->codec_id);
 287     if (!codec_desc) {
 288         err = AVERROR(EINVAL);
 289         goto fail;
 290     }
 291
 292     profile_count = vaMaxNumProfiles(ctx->hwctx->display);
 293     profile_list  = av_malloc_array(profile_count,
 294                                     sizeof(VAProfile));
 295     if (!profile_list) {
 296         err = AVERROR(ENOMEM);
 297         goto fail;
 298     }
 299
 300     vas = vaQueryConfigProfiles(ctx->hwctx->display,
 301                                 profile_list, &profile_count);
 302     if (vas != VA_STATUS_SUCCESS) {
 303         av_log(avctx, AV_LOG_ERROR, "Failed to query profiles: "
 304                "%d (%s).\n", vas, vaErrorStr(vas));
 305         err = AVERROR(ENOSYS);
 306         goto fail;
 307     }
 308
 309     profile = VAProfileNone;
 310     exact_match = 0;
 311
 312     for (i = 0; i < FF_ARRAY_ELEMS(vaapi_profile_map); i++) {
 313         int profile_match = 0;
 314         if (avctx->codec_id != vaapi_profile_map[i].codec_id)
 315             continue;
 316         if (avctx->profile == vaapi_profile_map[i].codec_profile ||
 317             vaapi_profile_map[i].codec_profile == FF_PROFILE_UNKNOWN)
 318             profile_match = 1;
 319         profile = vaapi_profile_map[i].va_profile;
 320         for (j = 0; j < profile_count; j++) {
 321             if (profile == profile_list[j]) {
 322                 exact_match = profile_match;
 323                 break;
 324             }
 325         }
 326         if (j < profile_count) {
 327             if (exact_match)
 328                 break;
 329             alt_profile = vaapi_profile_map[i].codec_profile;
 330         }
 331     }
 332     av_freep(&profile_list);
 333
 334     if (profile == VAProfileNone) {
 335         av_log(avctx, AV_LOG_ERROR, "No support for codec %s "
 336                "profile %d.\n", codec_desc->name, avctx->profile);
 337         err = AVERROR(ENOSYS);
 338         goto fail;
 339     }
 340     if (!exact_match) {
 341         if (avctx->hwaccel_flags &
 342             AV_HWACCEL_FLAG_ALLOW_PROFILE_MISMATCH) {
 343             av_log(avctx, AV_LOG_VERBOSE, "Codec %s profile %d not "
 344                    "supported for hardware decode.\n",
 345                    codec_desc->name, avctx->profile);
 346             av_log(avctx, AV_LOG_WARNING, "Using possibly-"
 347                    "incompatible profile %d instead.\n",
 348                    alt_profile);
 349         } else {
 350             av_log(avctx, AV_LOG_VERBOSE, "Codec %s profile %d not "
 351                    "supported for hardware decode.\n",
 352                    codec_desc->name, avctx->profile);
 353             err = AVERROR(EINVAL);
 354             goto fail;
 355         }
 356     }
 357
 358     ctx->va_profile    = profile;
 359     ctx->va_entrypoint = VAEntrypointVLD;
 360
 361     vas = vaCreateConfig(ctx->hwctx->display, ctx->va_profile,
 362                          ctx->va_entrypoint, NULL, 0,
 363                          &ctx->va_config);
 364     if (vas != VA_STATUS_SUCCESS) {
 365         av_log(avctx, AV_LOG_ERROR, "Failed to create decode "
 366                "configuration: %d (%s).\n", vas, vaErrorStr(vas));
 367         err = AVERROR(EIO);
 368         goto fail;
 369     }
 370
 371     hwconfig = av_hwdevice_hwconfig_alloc(avctx->hw_device_ctx ?
 372                                           avctx->hw_device_ctx :
 373                                           ctx->frames->device_ref);
 374     if (!hwconfig) {
 375         err = AVERROR(ENOMEM);
 376         goto fail;
 377     }
 378     hwconfig->config_id = ctx->va_config;
 379
 380     constraints =
 381         av_hwdevice_get_hwframe_constraints(avctx->hw_device_ctx ?
 382                                             avctx->hw_device_ctx :
 383                                             ctx->frames->device_ref,
 384                                             hwconfig);
 385     if (!constraints) {
 386         err = AVERROR(ENOMEM);
 387         goto fail;
 388     }
 389
 390     if (avctx->coded_width  < constraints->min_width  ||
 391         avctx->coded_height < constraints->min_height ||
 392         avctx->coded_width  > constraints->max_width  ||
 393         avctx->coded_height > constraints->max_height) {
 394         av_log(avctx, AV_LOG_ERROR, "Hardware does not support image "
 395                "size %dx%d (constraints: width %d-%d height %d-%d).\n",
 396                avctx->coded_width, avctx->coded_height,
 397                constraints->min_width,  constraints->max_width,
 398                constraints->min_height, constraints->max_height);
 399         err = AVERROR(EINVAL);
 400         goto fail;
 401     }
 402     if (!constraints->valid_sw_formats ||
 403         constraints->valid_sw_formats[0] == AV_PIX_FMT_NONE) {
 404         av_log(avctx, AV_LOG_ERROR, "Hardware does not offer any "
 405                "usable surface formats.\n");
 406         err = AVERROR(EINVAL);
 407         goto fail;
 408     }
 409
 410     // Find the first format in the list which matches the expected
 411     // bit depth and subsampling.  If none are found (this can happen
 412     // when 10-bit streams are decoded to 8-bit surfaces, for example)
 413     // then just take the first format on the list.
 414     ctx->surface_format = constraints->valid_sw_formats[0];
 415     sw_desc = av_pix_fmt_desc_get(avctx->sw_pix_fmt);
 416     for (i = 0; constraints->valid_sw_formats[i] != AV_PIX_FMT_NONE; i++) {
 417         desc = av_pix_fmt_desc_get(constraints->valid_sw_formats[i]);
 418         if (desc->nb_components != sw_desc->nb_components ||
 419             desc->log2_chroma_w != sw_desc->log2_chroma_w ||
 420             desc->log2_chroma_h != sw_desc->log2_chroma_h)
 421             continue;
 422         for (j = 0; j < desc->nb_components; j++) {
 423             if (desc->comp[j].depth != sw_desc->comp[j].depth)
 424                 break;
 425         }
 426         if (j < desc->nb_components)
 427             continue;
 428         ctx->surface_format = constraints->valid_sw_formats[i];
 429         break;
 430     }
 431
 432     // Start with at least four surfaces.
 433     ctx->surface_count = 4;
 434     // Add per-codec number of surfaces used for storing reference frames.
 435     switch (avctx->codec_id) {
 436     case AV_CODEC_ID_H264:
 437     case AV_CODEC_ID_HEVC:
 438         ctx->surface_count += 16;
 439         break;
 440     case AV_CODEC_ID_VP9:
 441         ctx->surface_count += 8;
 442         break;
 443     case AV_CODEC_ID_VP8:
 444         ctx->surface_count += 3;
 445         break;
 446     default:
 447         ctx->surface_count += 2;
 448     }
 449     // Add an additional surface per thread is frame threading is enabled.
 450     if (avctx->active_thread_type & FF_THREAD_FRAME)
 451         ctx->surface_count += avctx->thread_count;
 452
 453     av_hwframe_constraints_free(&constraints);
 454     av_freep(&hwconfig);
 455
 456     return 0;
 457
 458 fail:
 459     av_hwframe_constraints_free(&constraints);
 460     av_freep(&hwconfig);
 461     if (ctx->va_config != VA_INVALID_ID) {
 462         vaDestroyConfig(ctx->hwctx->display, ctx->va_config);
 463         ctx->va_config = VA_INVALID_ID;
 464     }
 465     av_freep(&profile_list);
 466     return err;
 467 }
 468
 469 int ff_vaapi_decode_init(AVCodecContext *avctx)
 470 {
 471     VAAPIDecodeContext *ctx = avctx->internal->hwaccel_priv_data;
 472     VAStatus vas;
 473     int err;
 474
 475     ctx->va_config  = VA_INVALID_ID;
 476     ctx->va_context = VA_INVALID_ID;
 477
 478 #if FF_API_VAAPI_CONTEXT
 479     if (avctx->hwaccel_context) {
 480         av_log(avctx, AV_LOG_WARNING, "Using deprecated struct "
 481                "vaapi_context in decode.\n");
 482
 483         ctx->have_old_context = 1;
 484         ctx->old_context = avctx->hwaccel_context;
 485
 486         // Really we only want the VAAPI device context, but this
 487         // allocates a whole generic device context because we don't
 488         // have any other way to determine how big it should be.
 489         ctx->device_ref =
 490             av_hwdevice_ctx_alloc(AV_HWDEVICE_TYPE_VAAPI);
 491         if (!ctx->device_ref) {
 492             err = AVERROR(ENOMEM);
 493             goto fail;
 494         }
 495         ctx->device = (AVHWDeviceContext*)ctx->device_ref->data;
 496         ctx->hwctx  = ctx->device->hwctx;
 497
 498         ctx->hwctx->display = ctx->old_context->display;
 499
 500         // The old VAAPI decode setup assumed this quirk was always
 501         // present, so set it here to avoid the behaviour changing.
 502         ctx->hwctx->driver_quirks =
 503             AV_VAAPI_DRIVER_QUIRK_RENDER_PARAM_BUFFERS;
 504
 505     } else
 506 #endif
 507     if (avctx->hw_frames_ctx) {
 508         // This structure has a shorter lifetime than the enclosing
 509         // AVCodecContext, so we inherit the references from there
 510         // and do not need to make separate ones.
 511
 512         ctx->frames = (AVHWFramesContext*)avctx->hw_frames_ctx->data;
 513         ctx->hwfc   = ctx->frames->hwctx;
 514         ctx->device = ctx->frames->device_ctx;
 515         ctx->hwctx  = ctx->device->hwctx;
 516
 517     } else if (avctx->hw_device_ctx) {
 518         ctx->device = (AVHWDeviceContext*)avctx->hw_device_ctx->data;
 519         ctx->hwctx  = ctx->device->hwctx;
 520
 521         if (ctx->device->type != AV_HWDEVICE_TYPE_VAAPI) {
 522             av_log(avctx, AV_LOG_ERROR, "Device supplied for VAAPI "
 523                    "decoding must be a VAAPI device (not %d).\n",
 524                    ctx->device->type);
 525             err = AVERROR(EINVAL);
 526             goto fail;
 527         }
 528
 529     } else {
 530         av_log(avctx, AV_LOG_ERROR, "A hardware device or frames context "
 531                "is required for VAAPI decoding.\n");
 532         err = AVERROR(EINVAL);
 533         goto fail;
 534     }
 535
 536 #if FF_API_VAAPI_CONTEXT
 537     if (ctx->have_old_context) {
 538         ctx->va_config  = ctx->old_context->config_id;
 539         ctx->va_context = ctx->old_context->context_id;
 540
 541         av_log(avctx, AV_LOG_DEBUG, "Using user-supplied decoder "
 542                "context: %#x/%#x.\n", ctx->va_config, ctx->va_context);
 543     } else {
 544 #endif
 545
 546     err = vaapi_decode_make_config(avctx);
 547     if (err)
 548         goto fail;
 549
 550     if (!avctx->hw_frames_ctx) {
 551         avctx->hw_frames_ctx = av_hwframe_ctx_alloc(avctx->hw_device_ctx);
 552         if (!avctx->hw_frames_ctx) {
 553             err = AVERROR(ENOMEM);
 554             goto fail;
 555         }
 556         ctx->frames = (AVHWFramesContext*)avctx->hw_frames_ctx->data;
 557
 558         ctx->frames->format = AV_PIX_FMT_VAAPI;
 559         ctx->frames->width  = avctx->coded_width;
 560         ctx->frames->height = avctx->coded_height;
 561
 562         ctx->frames->sw_format         = ctx->surface_format;
 563         ctx->frames->initial_pool_size = ctx->surface_count;
 564
 565         err = av_hwframe_ctx_init(avctx->hw_frames_ctx);
 566         if (err < 0) {
 567             av_log(avctx, AV_LOG_ERROR, "Failed to initialise internal "
 568                    "frames context: %d.\n", err);
 569             goto fail;
 570         }
 571
 572         ctx->hwfc = ctx->frames->hwctx;
 573     }
 574
 575     vas = vaCreateContext(ctx->hwctx->display, ctx->va_config,
 576                           avctx->coded_width, avctx->coded_height,
 577                           VA_PROGRESSIVE,
 578                           ctx->hwfc->surface_ids,
 579                           ctx->hwfc->nb_surfaces,
 580                           &ctx->va_context);
 581     if (vas != VA_STATUS_SUCCESS) {
 582         av_log(avctx, AV_LOG_ERROR, "Failed to create decode "
 583                "context: %d (%s).\n", vas, vaErrorStr(vas));
 584         err = AVERROR(EIO);
 585         goto fail;
 586     }
 587
 588     av_log(avctx, AV_LOG_DEBUG, "Decode context initialised: "
 589            "%#x/%#x.\n", ctx->va_config, ctx->va_context);
 590 #if FF_API_VAAPI_CONTEXT
 591     }
 592 #endif
 593
 594     return 0;
 595
 596 fail:
 597     ff_vaapi_decode_uninit(avctx);
 598     return err;
 599 }
 600
 601 int ff_vaapi_decode_uninit(AVCodecContext *avctx)
 602 {
 603     VAAPIDecodeContext *ctx = avctx->internal->hwaccel_priv_data;
 604     VAStatus vas;
 605
 606 #if FF_API_VAAPI_CONTEXT
 607     if (ctx->have_old_context) {
 608         av_buffer_unref(&ctx->device_ref);
 609     } else {
 610 #endif
 611
 612     if (ctx->va_context != VA_INVALID_ID) {
 613         vas = vaDestroyContext(ctx->hwctx->display, ctx->va_context);
 614         if (vas != VA_STATUS_SUCCESS) {
 615             av_log(avctx, AV_LOG_ERROR, "Failed to destroy decode "
 616                    "context %#x: %d (%s).\n",
 617                    ctx->va_context, vas, vaErrorStr(vas));
 618         }
 619     }
 620     if (ctx->va_config != VA_INVALID_ID) {
 621         vas = vaDestroyConfig(ctx->hwctx->display, ctx->va_config);
 622         if (vas != VA_STATUS_SUCCESS) {
 623             av_log(avctx, AV_LOG_ERROR, "Failed to destroy decode "
 624                    "configuration %#x: %d (%s).\n",
 625                    ctx->va_config, vas, vaErrorStr(vas));
 626         }
 627     }
 628
 629 #if FF_API_VAAPI_CONTEXT
 630     }
 631 #endif
 632
 633     return 0;
 634 }