git.sesse.net Git - ffmpeg/blob - libavutil/hwcontext_dxva2.c

   1 /*
   2  * This file is part of FFmpeg.
   3  *
   4  * FFmpeg 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  * FFmpeg 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 FFmpeg; if not, write to the Free Software
  16  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  17  */
  18
  19 #include <windows.h>
  20
  21 #if !defined(_WIN32_WINNT) || _WIN32_WINNT < 0x0600
  22 #undef _WIN32_WINNT
  23 #define _WIN32_WINNT 0x0600
  24 #endif
  25 #define DXVA2API_USE_BITFIELDS
  26 #define COBJMACROS
  27
  28 #include <d3d9.h>
  29 #include <dxva2api.h>
  30 #include <initguid.h>
  31
  32 #include "avassert.h"
  33 #include "common.h"
  34 #include "hwcontext.h"
  35 #include "hwcontext_dxva2.h"
  36 #include "hwcontext_internal.h"
  37 #include "imgutils.h"
  38 #include "pixdesc.h"
  39 #include "pixfmt.h"
  40 #include "compat/w32dlfcn.h"
  41
  42 typedef IDirect3D9* WINAPI pDirect3DCreate9(UINT);
  43 typedef HRESULT WINAPI pDirect3DCreate9Ex(UINT, IDirect3D9Ex **);
  44 typedef HRESULT WINAPI pCreateDeviceManager9(UINT *, IDirect3DDeviceManager9 **);
  45
  46 #define FF_D3DCREATE_FLAGS (D3DCREATE_SOFTWARE_VERTEXPROCESSING | \
  47                             D3DCREATE_MULTITHREADED | \
  48                             D3DCREATE_FPU_PRESERVE)
  49
  50 static const D3DPRESENT_PARAMETERS dxva2_present_params = {
  51     .Windowed         = TRUE,
  52     .BackBufferWidth  = 640,
  53     .BackBufferHeight = 480,
  54     .BackBufferCount  = 0,
  55     .SwapEffect       = D3DSWAPEFFECT_DISCARD,
  56     .Flags            = D3DPRESENTFLAG_VIDEO,
  57 };
  58
  59 typedef struct DXVA2Mapping {
  60     uint32_t palette_dummy[256];
  61 } DXVA2Mapping;
  62
  63 typedef struct DXVA2FramesContext {
  64     IDirect3DSurface9 **surfaces_internal;
  65     int              nb_surfaces_used;
  66
  67     HANDLE  device_handle;
  68     IDirectXVideoAccelerationService *service;
  69
  70     D3DFORMAT format;
  71 } DXVA2FramesContext;
  72
  73 typedef struct DXVA2DevicePriv {
  74     HMODULE d3dlib;
  75     HMODULE dxva2lib;
  76
  77     HANDLE device_handle;
  78
  79     IDirect3D9       *d3d9;
  80     IDirect3DDevice9 *d3d9device;
  81 } DXVA2DevicePriv;
  82
  83 static const struct {
  84     D3DFORMAT d3d_format;
  85     enum AVPixelFormat pix_fmt;
  86 } supported_formats[] = {
  87     { MKTAG('N', 'V', '1', '2'), AV_PIX_FMT_NV12 },
  88     { MKTAG('P', '0', '1', '0'), AV_PIX_FMT_P010 },
  89     { D3DFMT_P8,                 AV_PIX_FMT_PAL8 },
  90 };
  91
  92 DEFINE_GUID(video_decoder_service,   0xfc51a551, 0xd5e7, 0x11d9, 0xaf, 0x55, 0x00, 0x05, 0x4e, 0x43, 0xff, 0x02);
  93 DEFINE_GUID(video_processor_service, 0xfc51a552, 0xd5e7, 0x11d9, 0xaf, 0x55, 0x00, 0x05, 0x4e, 0x43, 0xff, 0x02);
  94
  95 static void dxva2_frames_uninit(AVHWFramesContext *ctx)
  96 {
  97     AVDXVA2DeviceContext *device_hwctx = ctx->device_ctx->hwctx;
  98     AVDXVA2FramesContext *frames_hwctx = ctx->hwctx;
  99     DXVA2FramesContext *s = ctx->internal->priv;
 100     int i;
 101
 102     if (frames_hwctx->decoder_to_release)
 103         IDirectXVideoDecoder_Release(frames_hwctx->decoder_to_release);
 104
 105     if (s->surfaces_internal) {
 106         for (i = 0; i < frames_hwctx->nb_surfaces; i++) {
 107             if (s->surfaces_internal[i])
 108                 IDirect3DSurface9_Release(s->surfaces_internal[i]);
 109         }
 110     }
 111     av_freep(&s->surfaces_internal);
 112
 113     if (s->service) {
 114         IDirectXVideoAccelerationService_Release(s->service);
 115         s->service = NULL;
 116     }
 117
 118     if (s->device_handle != INVALID_HANDLE_VALUE) {
 119         IDirect3DDeviceManager9_CloseDeviceHandle(device_hwctx->devmgr, s->device_handle);
 120         s->device_handle = INVALID_HANDLE_VALUE;
 121     }
 122 }
 123
 124 static void dxva2_pool_release_dummy(void *opaque, uint8_t *data)
 125 {
 126     // important not to free anything here--data is a surface object
 127     // associated with the call to CreateSurface(), and these surfaces are
 128     // released in dxva2_frames_uninit()
 129 }
 130
 131 static AVBufferRef *dxva2_pool_alloc(void *opaque, int size)
 132 {
 133     AVHWFramesContext      *ctx = (AVHWFramesContext*)opaque;
 134     DXVA2FramesContext       *s = ctx->internal->priv;
 135     AVDXVA2FramesContext *hwctx = ctx->hwctx;
 136
 137     if (s->nb_surfaces_used < hwctx->nb_surfaces) {
 138         s->nb_surfaces_used++;
 139         return av_buffer_create((uint8_t*)s->surfaces_internal[s->nb_surfaces_used - 1],
 140                                 sizeof(*hwctx->surfaces), dxva2_pool_release_dummy, 0, 0);
 141     }
 142
 143     return NULL;
 144 }
 145
 146 static int dxva2_init_pool(AVHWFramesContext *ctx)
 147 {
 148     AVDXVA2FramesContext *frames_hwctx = ctx->hwctx;
 149     AVDXVA2DeviceContext *device_hwctx = ctx->device_ctx->hwctx;
 150     DXVA2FramesContext              *s = ctx->internal->priv;
 151     int decode = (frames_hwctx->surface_type == DXVA2_VideoDecoderRenderTarget);
 152
 153     int i;
 154     HRESULT hr;
 155
 156     if (ctx->initial_pool_size <= 0)
 157         return 0;
 158
 159     hr = IDirect3DDeviceManager9_OpenDeviceHandle(device_hwctx->devmgr, &s->device_handle);
 160     if (FAILED(hr)) {
 161         av_log(ctx, AV_LOG_ERROR, "Failed to open device handle\n");
 162         return AVERROR_UNKNOWN;
 163     }
 164
 165     hr = IDirect3DDeviceManager9_GetVideoService(device_hwctx->devmgr,
 166                                                  s->device_handle,
 167                                                  decode ? &video_decoder_service : &video_processor_service,
 168                                                  (void **)&s->service);
 169     if (FAILED(hr)) {
 170         av_log(ctx, AV_LOG_ERROR, "Failed to create the video service\n");
 171         return AVERROR_UNKNOWN;
 172     }
 173
 174     for (i = 0; i < FF_ARRAY_ELEMS(supported_formats); i++) {
 175         if (ctx->sw_format == supported_formats[i].pix_fmt) {
 176             s->format = supported_formats[i].d3d_format;
 177             break;
 178         }
 179     }
 180     if (i == FF_ARRAY_ELEMS(supported_formats)) {
 181         av_log(ctx, AV_LOG_ERROR, "Unsupported pixel format: %s\n",
 182                av_get_pix_fmt_name(ctx->sw_format));
 183         return AVERROR(EINVAL);
 184     }
 185
 186     s->surfaces_internal = av_mallocz_array(ctx->initial_pool_size,
 187                                             sizeof(*s->surfaces_internal));
 188     if (!s->surfaces_internal)
 189         return AVERROR(ENOMEM);
 190
 191     hr = IDirectXVideoAccelerationService_CreateSurface(s->service,
 192                                                         ctx->width, ctx->height,
 193                                                         ctx->initial_pool_size - 1,
 194                                                         s->format, D3DPOOL_DEFAULT, 0,
 195                                                         frames_hwctx->surface_type,
 196                                                         s->surfaces_internal, NULL);
 197     if (FAILED(hr)) {
 198         av_log(ctx, AV_LOG_ERROR, "Could not create the surfaces\n");
 199         return AVERROR_UNKNOWN;
 200     }
 201
 202     ctx->internal->pool_internal = av_buffer_pool_init2(sizeof(*s->surfaces_internal),
 203                                                         ctx, dxva2_pool_alloc, NULL);
 204     if (!ctx->internal->pool_internal)
 205         return AVERROR(ENOMEM);
 206
 207     frames_hwctx->surfaces    = s->surfaces_internal;
 208     frames_hwctx->nb_surfaces = ctx->initial_pool_size;
 209
 210     return 0;
 211 }
 212
 213 static int dxva2_frames_init(AVHWFramesContext *ctx)
 214 {
 215     AVDXVA2FramesContext *hwctx = ctx->hwctx;
 216     DXVA2FramesContext       *s = ctx->internal->priv;
 217     int ret;
 218
 219     if (hwctx->surface_type != DXVA2_VideoDecoderRenderTarget &&
 220         hwctx->surface_type != DXVA2_VideoProcessorRenderTarget) {
 221         av_log(ctx, AV_LOG_ERROR, "Unknown surface type: %lu\n",
 222                hwctx->surface_type);
 223         return AVERROR(EINVAL);
 224     }
 225
 226     s->device_handle = INVALID_HANDLE_VALUE;
 227
 228     /* init the frame pool if the caller didn't provide one */
 229     if (!ctx->pool) {
 230         ret = dxva2_init_pool(ctx);
 231         if (ret < 0) {
 232             av_log(ctx, AV_LOG_ERROR, "Error creating an internal frame pool\n");
 233             return ret;
 234         }
 235     }
 236
 237     return 0;
 238 }
 239
 240 static int dxva2_get_buffer(AVHWFramesContext *ctx, AVFrame *frame)
 241 {
 242     frame->buf[0] = av_buffer_pool_get(ctx->pool);
 243     if (!frame->buf[0])
 244         return AVERROR(ENOMEM);
 245
 246     frame->data[3] = frame->buf[0]->data;
 247     frame->format  = AV_PIX_FMT_DXVA2_VLD;
 248     frame->width   = ctx->width;
 249     frame->height  = ctx->height;
 250
 251     return 0;
 252 }
 253
 254 static int dxva2_transfer_get_formats(AVHWFramesContext *ctx,
 255                                       enum AVHWFrameTransferDirection dir,
 256                                       enum AVPixelFormat **formats)
 257 {
 258     enum AVPixelFormat *fmts;
 259
 260     fmts = av_malloc_array(2, sizeof(*fmts));
 261     if (!fmts)
 262         return AVERROR(ENOMEM);
 263
 264     fmts[0] = ctx->sw_format;
 265     fmts[1] = AV_PIX_FMT_NONE;
 266
 267     *formats = fmts;
 268
 269     return 0;
 270 }
 271
 272 static void dxva2_unmap_frame(AVHWFramesContext *ctx, HWMapDescriptor *hwmap)
 273 {
 274     IDirect3DSurface9 *surface = (IDirect3DSurface9*)hwmap->source->data[3];
 275     IDirect3DSurface9_UnlockRect(surface);
 276     av_freep(&hwmap->priv);
 277 }
 278
 279 static int dxva2_map_frame(AVHWFramesContext *ctx, AVFrame *dst, const AVFrame *src,
 280                            int flags)
 281 {
 282     IDirect3DSurface9 *surface = (IDirect3DSurface9*)src->data[3];
 283     DXVA2Mapping      *map;
 284     D3DSURFACE_DESC    surfaceDesc;
 285     D3DLOCKED_RECT     LockedRect;
 286     HRESULT            hr;
 287     int i, err, nb_planes;
 288     int lock_flags = 0;
 289
 290     nb_planes = av_pix_fmt_count_planes(dst->format);
 291
 292     hr = IDirect3DSurface9_GetDesc(surface, &surfaceDesc);
 293     if (FAILED(hr)) {
 294         av_log(ctx, AV_LOG_ERROR, "Error getting a surface description\n");
 295         return AVERROR_UNKNOWN;
 296     }
 297
 298     if (!(flags & AV_HWFRAME_MAP_WRITE))
 299         lock_flags |= D3DLOCK_READONLY;
 300     if (flags & AV_HWFRAME_MAP_OVERWRITE)
 301         lock_flags |= D3DLOCK_DISCARD;
 302
 303     hr = IDirect3DSurface9_LockRect(surface, &LockedRect, NULL, lock_flags);
 304     if (FAILED(hr)) {
 305         av_log(ctx, AV_LOG_ERROR, "Unable to lock DXVA2 surface\n");
 306         return AVERROR_UNKNOWN;
 307     }
 308
 309     map = av_mallocz(sizeof(*map));
 310     if (!map) {
 311         err = AVERROR(ENOMEM);
 312         goto fail;
 313     }
 314
 315     err = ff_hwframe_map_create(src->hw_frames_ctx, dst, src,
 316                                 dxva2_unmap_frame, map);
 317     if (err < 0) {
 318         av_freep(&map);
 319         goto fail;
 320     }
 321
 322     for (i = 0; i < nb_planes; i++)
 323         dst->linesize[i] = LockedRect.Pitch;
 324
 325     av_image_fill_pointers(dst->data, dst->format, surfaceDesc.Height,
 326                            (uint8_t*)LockedRect.pBits, dst->linesize);
 327
 328     if (dst->format == AV_PIX_FMT_PAL8)
 329         dst->data[1] = (uint8_t*)map->palette_dummy;
 330
 331     return 0;
 332 fail:
 333     IDirect3DSurface9_UnlockRect(surface);
 334     return err;
 335 }
 336
 337 static int dxva2_transfer_data_to(AVHWFramesContext *ctx, AVFrame *dst,
 338                                   const AVFrame *src)
 339 {
 340     AVFrame *map;
 341     int ret;
 342
 343     if (src->format != ctx->sw_format)
 344         return AVERROR(ENOSYS);
 345
 346     map = av_frame_alloc();
 347     if (!map)
 348         return AVERROR(ENOMEM);
 349     map->format = dst->format;
 350
 351     ret = dxva2_map_frame(ctx, map, dst, AV_HWFRAME_MAP_WRITE | AV_HWFRAME_MAP_OVERWRITE);
 352     if (ret < 0)
 353         goto fail;
 354
 355     av_image_copy(map->data, map->linesize, src->data, src->linesize,
 356                   ctx->sw_format, src->width, src->height);
 357
 358 fail:
 359     av_frame_free(&map);
 360     return ret;
 361 }
 362
 363 static int dxva2_transfer_data_from(AVHWFramesContext *ctx, AVFrame *dst,
 364                                     const AVFrame *src)
 365 {
 366     AVFrame *map;
 367     ptrdiff_t src_linesize[4], dst_linesize[4];
 368     int ret, i;
 369
 370     if (dst->format != ctx->sw_format)
 371         return AVERROR(ENOSYS);
 372
 373     map = av_frame_alloc();
 374     if (!map)
 375         return AVERROR(ENOMEM);
 376     map->format = dst->format;
 377
 378     ret = dxva2_map_frame(ctx, map, src, AV_HWFRAME_MAP_READ);
 379     if (ret < 0)
 380         goto fail;
 381
 382     for (i = 0; i < 4; i++) {
 383         dst_linesize[i] = dst->linesize[i];
 384         src_linesize[i] = map->linesize[i];
 385     }
 386     av_image_copy_uc_from(dst->data, dst_linesize, map->data, src_linesize,
 387                           ctx->sw_format, src->width, src->height);
 388 fail:
 389     av_frame_free(&map);
 390     return ret;
 391 }
 392
 393 static int dxva2_map_from(AVHWFramesContext *ctx,
 394                           AVFrame *dst, const AVFrame *src, int flags)
 395 {
 396     int err;
 397
 398     if (dst->format != AV_PIX_FMT_NONE && dst->format != ctx->sw_format)
 399         return AVERROR(ENOSYS);
 400     dst->format = ctx->sw_format;
 401
 402     err = dxva2_map_frame(ctx, dst, src, flags);
 403     if (err < 0)
 404         return err;
 405
 406     err = av_frame_copy_props(dst, src);
 407     if (err < 0)
 408         return err;
 409
 410     return 0;
 411 }
 412
 413 static void dxva2_device_free(AVHWDeviceContext *ctx)
 414 {
 415     AVDXVA2DeviceContext *hwctx = ctx->hwctx;
 416     DXVA2DevicePriv       *priv = ctx->user_opaque;
 417
 418     if (hwctx->devmgr && priv->device_handle != INVALID_HANDLE_VALUE)
 419         IDirect3DDeviceManager9_CloseDeviceHandle(hwctx->devmgr, priv->device_handle);
 420
 421     if (hwctx->devmgr)
 422         IDirect3DDeviceManager9_Release(hwctx->devmgr);
 423
 424     if (priv->d3d9device)
 425         IDirect3DDevice9_Release(priv->d3d9device);
 426
 427     if (priv->d3d9)
 428         IDirect3D9_Release(priv->d3d9);
 429
 430     if (priv->d3dlib)
 431         dlclose(priv->d3dlib);
 432
 433     if (priv->dxva2lib)
 434         dlclose(priv->dxva2lib);
 435
 436     av_freep(&ctx->user_opaque);
 437 }
 438
 439 static int dxva2_device_create9(AVHWDeviceContext *ctx, UINT adapter)
 440 {
 441     DXVA2DevicePriv *priv = ctx->user_opaque;
 442     D3DPRESENT_PARAMETERS d3dpp = dxva2_present_params;
 443     D3DDISPLAYMODE d3ddm;
 444     HRESULT hr;
 445     pDirect3DCreate9 *createD3D = (pDirect3DCreate9 *)dlsym(priv->d3dlib, "Direct3DCreate9");
 446     if (!createD3D) {
 447         av_log(ctx, AV_LOG_ERROR, "Failed to locate Direct3DCreate9\n");
 448         return AVERROR_UNKNOWN;
 449     }
 450
 451     priv->d3d9 = createD3D(D3D_SDK_VERSION);
 452     if (!priv->d3d9) {
 453         av_log(ctx, AV_LOG_ERROR, "Failed to create IDirect3D object\n");
 454         return AVERROR_UNKNOWN;
 455     }
 456
 457     IDirect3D9_GetAdapterDisplayMode(priv->d3d9, adapter, &d3ddm);
 458
 459     d3dpp.BackBufferFormat = d3ddm.Format;
 460
 461     hr = IDirect3D9_CreateDevice(priv->d3d9, adapter, D3DDEVTYPE_HAL, GetDesktopWindow(),
 462                                  FF_D3DCREATE_FLAGS,
 463                                  &d3dpp, &priv->d3d9device);
 464     if (FAILED(hr)) {
 465         av_log(ctx, AV_LOG_ERROR, "Failed to create Direct3D device\n");
 466         return AVERROR_UNKNOWN;
 467     }
 468
 469     return 0;
 470 }
 471
 472 static int dxva2_device_create9ex(AVHWDeviceContext *ctx, UINT adapter)
 473 {
 474     DXVA2DevicePriv *priv = ctx->user_opaque;
 475     D3DPRESENT_PARAMETERS d3dpp = dxva2_present_params;
 476     D3DDISPLAYMODEEX modeex = {0};
 477     IDirect3D9Ex *d3d9ex = NULL;
 478     IDirect3DDevice9Ex *exdev = NULL;
 479     HRESULT hr;
 480     pDirect3DCreate9Ex *createD3DEx = (pDirect3DCreate9Ex *)dlsym(priv->d3dlib, "Direct3DCreate9Ex");
 481     if (!createD3DEx)
 482         return AVERROR(ENOSYS);
 483
 484     hr = createD3DEx(D3D_SDK_VERSION, &d3d9ex);
 485     if (FAILED(hr))
 486         return AVERROR_UNKNOWN;
 487
 488     modeex.Size = sizeof(D3DDISPLAYMODEEX);
 489     hr = IDirect3D9Ex_GetAdapterDisplayModeEx(d3d9ex, adapter, &modeex, NULL);
 490     if (FAILED(hr)) {
 491         IDirect3D9Ex_Release(d3d9ex);
 492         return AVERROR_UNKNOWN;
 493     }
 494
 495     d3dpp.BackBufferFormat = modeex.Format;
 496
 497     hr = IDirect3D9Ex_CreateDeviceEx(d3d9ex, adapter, D3DDEVTYPE_HAL, GetDesktopWindow(),
 498                                      FF_D3DCREATE_FLAGS,
 499                                      &d3dpp, NULL, &exdev);
 500     if (FAILED(hr)) {
 501         IDirect3D9Ex_Release(d3d9ex);
 502         return AVERROR_UNKNOWN;
 503     }
 504
 505     av_log(ctx, AV_LOG_VERBOSE, "Using D3D9Ex device.\n");
 506     priv->d3d9 = (IDirect3D9 *)d3d9ex;
 507     priv->d3d9device = (IDirect3DDevice9 *)exdev;
 508     return 0;
 509 }
 510
 511 static int dxva2_device_create(AVHWDeviceContext *ctx, const char *device,
 512                                AVDictionary *opts, int flags)
 513 {
 514     AVDXVA2DeviceContext *hwctx = ctx->hwctx;
 515     DXVA2DevicePriv *priv;
 516     pCreateDeviceManager9 *createDeviceManager = NULL;
 517     unsigned resetToken = 0;
 518     UINT adapter = D3DADAPTER_DEFAULT;
 519     HRESULT hr;
 520     int err;
 521
 522     if (device)
 523         adapter = atoi(device);
 524
 525     priv = av_mallocz(sizeof(*priv));
 526     if (!priv)
 527         return AVERROR(ENOMEM);
 528
 529     ctx->user_opaque = priv;
 530     ctx->free        = dxva2_device_free;
 531
 532     priv->device_handle = INVALID_HANDLE_VALUE;
 533
 534     priv->d3dlib = dlopen("d3d9.dll", 0);
 535     if (!priv->d3dlib) {
 536         av_log(ctx, AV_LOG_ERROR, "Failed to load D3D9 library\n");
 537         return AVERROR_UNKNOWN;
 538     }
 539     priv->dxva2lib = dlopen("dxva2.dll", 0);
 540     if (!priv->dxva2lib) {
 541         av_log(ctx, AV_LOG_ERROR, "Failed to load DXVA2 library\n");
 542         return AVERROR_UNKNOWN;
 543     }
 544
 545     createDeviceManager = (pCreateDeviceManager9 *)dlsym(priv->dxva2lib,
 546                                                          "DXVA2CreateDirect3DDeviceManager9");
 547     if (!createDeviceManager) {
 548         av_log(ctx, AV_LOG_ERROR, "Failed to locate DXVA2CreateDirect3DDeviceManager9\n");
 549         return AVERROR_UNKNOWN;
 550     }
 551
 552     if (dxva2_device_create9ex(ctx, adapter) < 0) {
 553         // Retry with "classic" d3d9
 554         err = dxva2_device_create9(ctx, adapter);
 555         if (err < 0)
 556             return err;
 557     }
 558
 559     hr = createDeviceManager(&resetToken, &hwctx->devmgr);
 560     if (FAILED(hr)) {
 561         av_log(ctx, AV_LOG_ERROR, "Failed to create Direct3D device manager\n");
 562         return AVERROR_UNKNOWN;
 563     }
 564
 565     hr = IDirect3DDeviceManager9_ResetDevice(hwctx->devmgr, priv->d3d9device, resetToken);
 566     if (FAILED(hr)) {
 567         av_log(ctx, AV_LOG_ERROR, "Failed to bind Direct3D device to device manager\n");
 568         return AVERROR_UNKNOWN;
 569     }
 570
 571     hr = IDirect3DDeviceManager9_OpenDeviceHandle(hwctx->devmgr, &priv->device_handle);
 572     if (FAILED(hr)) {
 573         av_log(ctx, AV_LOG_ERROR, "Failed to open device handle\n");
 574         return AVERROR_UNKNOWN;
 575     }
 576
 577     return 0;
 578 }
 579
 580 const HWContextType ff_hwcontext_type_dxva2 = {
 581     .type                 = AV_HWDEVICE_TYPE_DXVA2,
 582     .name                 = "DXVA2",
 583
 584     .device_hwctx_size    = sizeof(AVDXVA2DeviceContext),
 585     .frames_hwctx_size    = sizeof(AVDXVA2FramesContext),
 586     .frames_priv_size     = sizeof(DXVA2FramesContext),
 587
 588     .device_create        = dxva2_device_create,
 589     .frames_init          = dxva2_frames_init,
 590     .frames_uninit        = dxva2_frames_uninit,
 591     .frames_get_buffer    = dxva2_get_buffer,
 592     .transfer_get_formats = dxva2_transfer_get_formats,
 593     .transfer_data_to     = dxva2_transfer_data_to,
 594     .transfer_data_from   = dxva2_transfer_data_from,
 595     .map_from             = dxva2_map_from,
 596
 597     .pix_fmts             = (const enum AVPixelFormat[]){ AV_PIX_FMT_DXVA2_VLD, AV_PIX_FMT_NONE },
 598 };