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