git.sesse.net Git - ffmpeg/blob - ffmpeg_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 #ifdef _WIN32_WINNT
  22 #undef _WIN32_WINNT
  23 #endif
  24 #define _WIN32_WINNT 0x0600
  25 #define DXVA2API_USE_BITFIELDS
  26 #define COBJMACROS
  27
  28 #include <stdint.h>
  29
  30 #include <d3d9.h>
  31 #include <dxva2api.h>
  32
  33 #include "ffmpeg.h"
  34
  35 #include "libavcodec/dxva2.h"
  36
  37 #include "libavutil/avassert.h"
  38 #include "libavutil/buffer.h"
  39 #include "libavutil/frame.h"
  40 #include "libavutil/imgutils.h"
  41 #include "libavutil/pixfmt.h"
  42
  43 #include "libavutil/hwcontext.h"
  44 #include "libavutil/hwcontext_dxva2.h"
  45
  46 /* define all the GUIDs used directly here,
  47    to avoid problems with inconsistent dxva2api.h versions in mingw-w64 and different MSVC version */
  48 #include <initguid.h>
  49 DEFINE_GUID(IID_IDirectXVideoDecoderService, 0xfc51a551,0xd5e7,0x11d9,0xaf,0x55,0x00,0x05,0x4e,0x43,0xff,0x02);
  50
  51 DEFINE_GUID(DXVA2_ModeMPEG2_VLD,      0xee27417f, 0x5e28,0x4e65,0xbe,0xea,0x1d,0x26,0xb5,0x08,0xad,0xc9);
  52 DEFINE_GUID(DXVA2_ModeMPEG2and1_VLD,  0x86695f12, 0x340e,0x4f04,0x9f,0xd3,0x92,0x53,0xdd,0x32,0x74,0x60);
  53 DEFINE_GUID(DXVA2_ModeH264_E,         0x1b81be68, 0xa0c7,0x11d3,0xb9,0x84,0x00,0xc0,0x4f,0x2e,0x73,0xc5);
  54 DEFINE_GUID(DXVA2_ModeH264_F,         0x1b81be69, 0xa0c7,0x11d3,0xb9,0x84,0x00,0xc0,0x4f,0x2e,0x73,0xc5);
  55 DEFINE_GUID(DXVADDI_Intel_ModeH264_E, 0x604F8E68, 0x4951,0x4C54,0x88,0xFE,0xAB,0xD2,0x5C,0x15,0xB3,0xD6);
  56 DEFINE_GUID(DXVA2_ModeVC1_D,          0x1b81beA3, 0xa0c7,0x11d3,0xb9,0x84,0x00,0xc0,0x4f,0x2e,0x73,0xc5);
  57 DEFINE_GUID(DXVA2_ModeVC1_D2010,      0x1b81beA4, 0xa0c7,0x11d3,0xb9,0x84,0x00,0xc0,0x4f,0x2e,0x73,0xc5);
  58 DEFINE_GUID(DXVA2_ModeHEVC_VLD_Main,  0x5b11d51b, 0x2f4c,0x4452,0xbc,0xc3,0x09,0xf2,0xa1,0x16,0x0c,0xc0);
  59 DEFINE_GUID(DXVA2_ModeHEVC_VLD_Main10,0x107af0e0, 0xef1a,0x4d19,0xab,0xa8,0x67,0xa1,0x63,0x07,0x3d,0x13);
  60 DEFINE_GUID(DXVA2_ModeVP9_VLD_Profile0, 0x463707f8, 0xa1d0,0x4585,0x87,0x6d,0x83,0xaa,0x6d,0x60,0xb8,0x9e);
  61 DEFINE_GUID(DXVA2_NoEncrypt,          0x1b81beD0, 0xa0c7,0x11d3,0xb9,0x84,0x00,0xc0,0x4f,0x2e,0x73,0xc5);
  62 DEFINE_GUID(GUID_NULL,                0x00000000, 0x0000,0x0000,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00);
  63
  64 typedef IDirect3D9* WINAPI pDirect3DCreate9(UINT);
  65 typedef HRESULT WINAPI pCreateDeviceManager9(UINT *, IDirect3DDeviceManager9 **);
  66
  67 typedef struct dxva2_mode {
  68   const GUID     *guid;
  69   enum AVCodecID codec;
  70 } dxva2_mode;
  71
  72 static const dxva2_mode dxva2_modes[] = {
  73     /* MPEG-2 */
  74     { &DXVA2_ModeMPEG2_VLD,      AV_CODEC_ID_MPEG2VIDEO },
  75     { &DXVA2_ModeMPEG2and1_VLD,  AV_CODEC_ID_MPEG2VIDEO },
  76
  77     /* H.264 */
  78     { &DXVA2_ModeH264_F,         AV_CODEC_ID_H264 },
  79     { &DXVA2_ModeH264_E,         AV_CODEC_ID_H264 },
  80     /* Intel specific H.264 mode */
  81     { &DXVADDI_Intel_ModeH264_E, AV_CODEC_ID_H264 },
  82
  83     /* VC-1 / WMV3 */
  84     { &DXVA2_ModeVC1_D2010,      AV_CODEC_ID_VC1  },
  85     { &DXVA2_ModeVC1_D2010,      AV_CODEC_ID_WMV3 },
  86     { &DXVA2_ModeVC1_D,          AV_CODEC_ID_VC1  },
  87     { &DXVA2_ModeVC1_D,          AV_CODEC_ID_WMV3 },
  88
  89     /* HEVC/H.265 */
  90     { &DXVA2_ModeHEVC_VLD_Main,  AV_CODEC_ID_HEVC },
  91     { &DXVA2_ModeHEVC_VLD_Main10,AV_CODEC_ID_HEVC },
  92
  93     /* VP8/9 */
  94     { &DXVA2_ModeVP9_VLD_Profile0, AV_CODEC_ID_VP9 },
  95
  96     { NULL,                      0 },
  97 };
  98
  99 typedef struct DXVA2DevicePriv {
 100     HMODULE d3dlib;
 101     HMODULE dxva2lib;
 102
 103     HANDLE  deviceHandle;
 104
 105     IDirect3D9                  *d3d9;
 106     IDirect3DDevice9            *d3d9device;
 107 } DXVA2DevicePriv;
 108
 109 typedef struct DXVA2Context {
 110     IDirectXVideoDecoder        *decoder;
 111
 112     GUID                        decoder_guid;
 113     DXVA2_ConfigPictureDecode   decoder_config;
 114     IDirectXVideoDecoderService *decoder_service;
 115
 116     AVFrame                     *tmp_frame;
 117
 118     AVBufferRef                 *hw_device_ctx;
 119     AVBufferRef                 *hw_frames_ctx;
 120 } DXVA2Context;
 121
 122 static void dxva2_device_uninit(AVHWDeviceContext *ctx)
 123 {
 124     AVDXVA2DeviceContext *hwctx = ctx->hwctx;
 125     DXVA2DevicePriv       *priv = ctx->user_opaque;
 126
 127     if (hwctx->devmgr && priv->deviceHandle != INVALID_HANDLE_VALUE)
 128         IDirect3DDeviceManager9_CloseDeviceHandle(hwctx->devmgr, priv->deviceHandle);
 129
 130     if (hwctx->devmgr)
 131         IDirect3DDeviceManager9_Release(hwctx->devmgr);
 132
 133     if (priv->d3d9device)
 134         IDirect3DDevice9_Release(priv->d3d9device);
 135
 136     if (priv->d3d9)
 137         IDirect3D9_Release(priv->d3d9);
 138
 139     if (priv->d3dlib)
 140         FreeLibrary(priv->d3dlib);
 141
 142     if (priv->dxva2lib)
 143         FreeLibrary(priv->dxva2lib);
 144
 145     av_freep(&ctx->user_opaque);
 146 }
 147
 148 static void dxva2_uninit(AVCodecContext *s)
 149 {
 150     InputStream  *ist = s->opaque;
 151     DXVA2Context *ctx = ist->hwaccel_ctx;
 152
 153     ist->hwaccel_uninit        = NULL;
 154     ist->hwaccel_get_buffer    = NULL;
 155     ist->hwaccel_retrieve_data = NULL;
 156
 157     if (ctx->decoder_service)
 158         IDirectXVideoDecoderService_Release(ctx->decoder_service);
 159
 160     av_buffer_unref(&ctx->hw_frames_ctx);
 161     av_buffer_unref(&ctx->hw_device_ctx);
 162
 163     av_frame_free(&ctx->tmp_frame);
 164
 165     av_freep(&ist->hwaccel_ctx);
 166     av_freep(&s->hwaccel_context);
 167 }
 168
 169 static int dxva2_get_buffer(AVCodecContext *s, AVFrame *frame, int flags)
 170 {
 171     InputStream  *ist = s->opaque;
 172     DXVA2Context *ctx = ist->hwaccel_ctx;
 173
 174     return av_hwframe_get_buffer(ctx->hw_frames_ctx, frame, 0);
 175 }
 176
 177 static int dxva2_retrieve_data(AVCodecContext *s, AVFrame *frame)
 178 {
 179     InputStream        *ist = s->opaque;
 180     DXVA2Context       *ctx = ist->hwaccel_ctx;
 181     int                ret;
 182
 183     ret = av_hwframe_transfer_data(ctx->tmp_frame, frame, 0);
 184     if (ret < 0)
 185         return ret;
 186
 187     ret = av_frame_copy_props(ctx->tmp_frame, frame);
 188     if (ret < 0) {
 189         av_frame_unref(ctx->tmp_frame);
 190         return ret;
 191     }
 192
 193     av_frame_unref(frame);
 194     av_frame_move_ref(frame, ctx->tmp_frame);
 195
 196     return 0;
 197 }
 198
 199 static int dxva2_alloc(AVCodecContext *s)
 200 {
 201     InputStream  *ist = s->opaque;
 202     int loglevel = (ist->hwaccel_id == HWACCEL_AUTO) ? AV_LOG_VERBOSE : AV_LOG_ERROR;
 203     DXVA2Context *ctx;
 204     pDirect3DCreate9      *createD3D = NULL;
 205     pCreateDeviceManager9 *createDeviceManager = NULL;
 206     HRESULT hr;
 207     D3DPRESENT_PARAMETERS d3dpp = {0};
 208     D3DDISPLAYMODE        d3ddm;
 209     unsigned resetToken = 0;
 210     UINT adapter = D3DADAPTER_DEFAULT;
 211
 212     AVHWDeviceContext    *device_ctx;
 213     AVDXVA2DeviceContext *device_hwctx;
 214     DXVA2DevicePriv      *device_priv;
 215     int ret;
 216
 217     ctx = av_mallocz(sizeof(*ctx));
 218     if (!ctx)
 219         return AVERROR(ENOMEM);
 220
 221     ist->hwaccel_ctx           = ctx;
 222     ist->hwaccel_uninit        = dxva2_uninit;
 223     ist->hwaccel_get_buffer    = dxva2_get_buffer;
 224     ist->hwaccel_retrieve_data = dxva2_retrieve_data;
 225
 226     ctx->hw_device_ctx = av_hwdevice_ctx_alloc(AV_HWDEVICE_TYPE_DXVA2);
 227     if (!ctx->hw_device_ctx)
 228         goto fail;
 229
 230     device_ctx   = (AVHWDeviceContext*)ctx->hw_device_ctx->data;
 231     device_hwctx = device_ctx->hwctx;
 232
 233     device_priv = av_mallocz(sizeof(*device_priv));
 234     if (!device_priv)
 235         goto fail;
 236
 237     device_ctx->user_opaque = device_priv;
 238     device_ctx->free        = dxva2_device_uninit;
 239
 240     device_priv->deviceHandle = INVALID_HANDLE_VALUE;
 241
 242     device_priv->d3dlib = LoadLibrary("d3d9.dll");
 243     if (!device_priv->d3dlib) {
 244         av_log(NULL, loglevel, "Failed to load D3D9 library\n");
 245         goto fail;
 246     }
 247     device_priv->dxva2lib = LoadLibrary("dxva2.dll");
 248     if (!device_priv->dxva2lib) {
 249         av_log(NULL, loglevel, "Failed to load DXVA2 library\n");
 250         goto fail;
 251     }
 252
 253     createD3D = (pDirect3DCreate9 *)GetProcAddress(device_priv->d3dlib, "Direct3DCreate9");
 254     if (!createD3D) {
 255         av_log(NULL, loglevel, "Failed to locate Direct3DCreate9\n");
 256         goto fail;
 257     }
 258     createDeviceManager = (pCreateDeviceManager9 *)GetProcAddress(device_priv->dxva2lib, "DXVA2CreateDirect3DDeviceManager9");
 259     if (!createDeviceManager) {
 260         av_log(NULL, loglevel, "Failed to locate DXVA2CreateDirect3DDeviceManager9\n");
 261         goto fail;
 262     }
 263
 264     device_priv->d3d9 = createD3D(D3D_SDK_VERSION);
 265     if (!device_priv->d3d9) {
 266         av_log(NULL, loglevel, "Failed to create IDirect3D object\n");
 267         goto fail;
 268     }
 269
 270     if (ist->hwaccel_device) {
 271         adapter = atoi(ist->hwaccel_device);
 272         av_log(NULL, AV_LOG_INFO, "Using HWAccel device %d\n", adapter);
 273     }
 274
 275     IDirect3D9_GetAdapterDisplayMode(device_priv->d3d9, adapter, &d3ddm);
 276     d3dpp.Windowed         = TRUE;
 277     d3dpp.BackBufferWidth  = 640;
 278     d3dpp.BackBufferHeight = 480;
 279     d3dpp.BackBufferCount  = 0;
 280     d3dpp.BackBufferFormat = d3ddm.Format;
 281     d3dpp.SwapEffect       = D3DSWAPEFFECT_DISCARD;
 282     d3dpp.Flags            = D3DPRESENTFLAG_VIDEO;
 283
 284     hr = IDirect3D9_CreateDevice(device_priv->d3d9, adapter, D3DDEVTYPE_HAL, GetDesktopWindow(),
 285                                  D3DCREATE_SOFTWARE_VERTEXPROCESSING | D3DCREATE_MULTITHREADED | D3DCREATE_FPU_PRESERVE,
 286                                  &d3dpp, &device_priv->d3d9device);
 287     if (FAILED(hr)) {
 288         av_log(NULL, loglevel, "Failed to create Direct3D device\n");
 289         goto fail;
 290     }
 291
 292     hr = createDeviceManager(&resetToken, &device_hwctx->devmgr);
 293     if (FAILED(hr)) {
 294         av_log(NULL, loglevel, "Failed to create Direct3D device manager\n");
 295         goto fail;
 296     }
 297
 298     hr = IDirect3DDeviceManager9_ResetDevice(device_hwctx->devmgr, device_priv->d3d9device, resetToken);
 299     if (FAILED(hr)) {
 300         av_log(NULL, loglevel, "Failed to bind Direct3D device to device manager\n");
 301         goto fail;
 302     }
 303
 304     hr = IDirect3DDeviceManager9_OpenDeviceHandle(device_hwctx->devmgr, &device_priv->deviceHandle);
 305     if (FAILED(hr)) {
 306         av_log(NULL, loglevel, "Failed to open device handle\n");
 307         goto fail;
 308     }
 309
 310     hr = IDirect3DDeviceManager9_GetVideoService(device_hwctx->devmgr, device_priv->deviceHandle, &IID_IDirectXVideoDecoderService, (void **)&ctx->decoder_service);
 311     if (FAILED(hr)) {
 312         av_log(NULL, loglevel, "Failed to create IDirectXVideoDecoderService\n");
 313         goto fail;
 314     }
 315
 316     ret = av_hwdevice_ctx_init(ctx->hw_device_ctx);
 317     if (ret < 0) {
 318         av_log(NULL, loglevel, "Failed to initialize the HW device context\n");
 319         goto fail;
 320     }
 321
 322     ctx->tmp_frame = av_frame_alloc();
 323     if (!ctx->tmp_frame)
 324         goto fail;
 325
 326     s->hwaccel_context = av_mallocz(sizeof(struct dxva_context));
 327     if (!s->hwaccel_context)
 328         goto fail;
 329
 330     return 0;
 331 fail:
 332     dxva2_uninit(s);
 333     return AVERROR(EINVAL);
 334 }
 335
 336 static int dxva2_get_decoder_configuration(AVCodecContext *s, const GUID *device_guid,
 337                                            const DXVA2_VideoDesc *desc,
 338                                            DXVA2_ConfigPictureDecode *config)
 339 {
 340     InputStream  *ist = s->opaque;
 341     int loglevel = (ist->hwaccel_id == HWACCEL_AUTO) ? AV_LOG_VERBOSE : AV_LOG_ERROR;
 342     DXVA2Context *ctx = ist->hwaccel_ctx;
 343     unsigned cfg_count = 0, best_score = 0;
 344     DXVA2_ConfigPictureDecode *cfg_list = NULL;
 345     DXVA2_ConfigPictureDecode best_cfg = {{0}};
 346     HRESULT hr;
 347     int i;
 348
 349     hr = IDirectXVideoDecoderService_GetDecoderConfigurations(ctx->decoder_service, device_guid, desc, NULL, &cfg_count, &cfg_list);
 350     if (FAILED(hr)) {
 351         av_log(NULL, loglevel, "Unable to retrieve decoder configurations\n");
 352         return AVERROR(EINVAL);
 353     }
 354
 355     for (i = 0; i < cfg_count; i++) {
 356         DXVA2_ConfigPictureDecode *cfg = &cfg_list[i];
 357
 358         unsigned score;
 359         if (cfg->ConfigBitstreamRaw == 1)
 360             score = 1;
 361         else if (s->codec_id == AV_CODEC_ID_H264 && cfg->ConfigBitstreamRaw == 2)
 362             score = 2;
 363         else
 364             continue;
 365         if (IsEqualGUID(&cfg->guidConfigBitstreamEncryption, &DXVA2_NoEncrypt))
 366             score += 16;
 367         if (score > best_score) {
 368             best_score = score;
 369             best_cfg   = *cfg;
 370         }
 371     }
 372     CoTaskMemFree(cfg_list);
 373
 374     if (!best_score) {
 375         av_log(NULL, loglevel, "No valid decoder configuration available\n");
 376         return AVERROR(EINVAL);
 377     }
 378
 379     *config = best_cfg;
 380     return 0;
 381 }
 382
 383 static int dxva2_create_decoder(AVCodecContext *s)
 384 {
 385     InputStream  *ist = s->opaque;
 386     int loglevel = (ist->hwaccel_id == HWACCEL_AUTO) ? AV_LOG_VERBOSE : AV_LOG_ERROR;
 387     DXVA2Context *ctx = ist->hwaccel_ctx;
 388     struct dxva_context *dxva_ctx = s->hwaccel_context;
 389     GUID *guid_list = NULL;
 390     unsigned guid_count = 0, i, j;
 391     GUID device_guid = GUID_NULL;
 392     const D3DFORMAT surface_format = (s->sw_pix_fmt == AV_PIX_FMT_YUV420P10) ? MKTAG('P','0','1','0') : MKTAG('N','V','1','2');
 393     D3DFORMAT target_format = 0;
 394     DXVA2_VideoDesc desc = { 0 };
 395     DXVA2_ConfigPictureDecode config;
 396     HRESULT hr;
 397     int surface_alignment, num_surfaces;
 398     int ret;
 399
 400     AVDXVA2FramesContext *frames_hwctx;
 401     AVHWFramesContext *frames_ctx;
 402
 403     hr = IDirectXVideoDecoderService_GetDecoderDeviceGuids(ctx->decoder_service, &guid_count, &guid_list);
 404     if (FAILED(hr)) {
 405         av_log(NULL, loglevel, "Failed to retrieve decoder device GUIDs\n");
 406         goto fail;
 407     }
 408
 409     for (i = 0; dxva2_modes[i].guid; i++) {
 410         D3DFORMAT *target_list = NULL;
 411         unsigned target_count = 0;
 412         const dxva2_mode *mode = &dxva2_modes[i];
 413         if (mode->codec != s->codec_id)
 414             continue;
 415
 416         for (j = 0; j < guid_count; j++) {
 417             if (IsEqualGUID(mode->guid, &guid_list[j]))
 418                 break;
 419         }
 420         if (j == guid_count)
 421             continue;
 422
 423         hr = IDirectXVideoDecoderService_GetDecoderRenderTargets(ctx->decoder_service, mode->guid, &target_count, &target_list);
 424         if (FAILED(hr)) {
 425             continue;
 426         }
 427         for (j = 0; j < target_count; j++) {
 428             const D3DFORMAT format = target_list[j];
 429             if (format == surface_format) {
 430                 target_format = format;
 431                 break;
 432             }
 433         }
 434         CoTaskMemFree(target_list);
 435         if (target_format) {
 436             device_guid = *mode->guid;
 437             break;
 438         }
 439     }
 440     CoTaskMemFree(guid_list);
 441
 442     if (IsEqualGUID(&device_guid, &GUID_NULL)) {
 443         av_log(NULL, loglevel, "No decoder device for codec found\n");
 444         goto fail;
 445     }
 446
 447     desc.SampleWidth  = s->coded_width;
 448     desc.SampleHeight = s->coded_height;
 449     desc.Format       = target_format;
 450
 451     ret = dxva2_get_decoder_configuration(s, &device_guid, &desc, &config);
 452     if (ret < 0) {
 453         goto fail;
 454     }
 455
 456     /* decoding MPEG-2 requires additional alignment on some Intel GPUs,
 457        but it causes issues for H.264 on certain AMD GPUs..... */
 458     if (s->codec_id == AV_CODEC_ID_MPEG2VIDEO)
 459         surface_alignment = 32;
 460     /* the HEVC DXVA2 spec asks for 128 pixel aligned surfaces to ensure
 461        all coding features have enough room to work with */
 462     else if  (s->codec_id == AV_CODEC_ID_HEVC)
 463         surface_alignment = 128;
 464     else
 465         surface_alignment = 16;
 466
 467     /* 4 base work surfaces */
 468     num_surfaces = 4;
 469
 470     /* add surfaces based on number of possible refs */
 471     if (s->codec_id == AV_CODEC_ID_H264 || s->codec_id == AV_CODEC_ID_HEVC)
 472         num_surfaces += 16;
 473     else if (s->codec_id == AV_CODEC_ID_VP9)
 474         num_surfaces += 8;
 475     else
 476         num_surfaces += 2;
 477
 478     /* add extra surfaces for frame threading */
 479     if (s->active_thread_type & FF_THREAD_FRAME)
 480         num_surfaces += s->thread_count;
 481
 482     ctx->hw_frames_ctx = av_hwframe_ctx_alloc(ctx->hw_device_ctx);
 483     if (!ctx->hw_frames_ctx)
 484         goto fail;
 485     frames_ctx   = (AVHWFramesContext*)ctx->hw_frames_ctx->data;
 486     frames_hwctx = frames_ctx->hwctx;
 487
 488     frames_ctx->format            = AV_PIX_FMT_DXVA2_VLD;
 489     frames_ctx->sw_format         = (target_format == MKTAG('P','0','1','0') ? AV_PIX_FMT_P010 : AV_PIX_FMT_NV12);
 490     frames_ctx->width             = FFALIGN(s->coded_width, surface_alignment);
 491     frames_ctx->height            = FFALIGN(s->coded_height, surface_alignment);
 492     frames_ctx->initial_pool_size = num_surfaces;
 493
 494     frames_hwctx->surface_type = DXVA2_VideoDecoderRenderTarget;
 495
 496     ret = av_hwframe_ctx_init(ctx->hw_frames_ctx);
 497     if (ret < 0) {
 498         av_log(NULL, loglevel, "Failed to initialize the HW frames context\n");
 499         goto fail;
 500     }
 501
 502     hr = IDirectXVideoDecoderService_CreateVideoDecoder(ctx->decoder_service, &device_guid,
 503                                                         &desc, &config, frames_hwctx->surfaces,
 504                                                         frames_hwctx->nb_surfaces, &frames_hwctx->decoder_to_release);
 505     if (FAILED(hr)) {
 506         av_log(NULL, loglevel, "Failed to create DXVA2 video decoder\n");
 507         goto fail;
 508     }
 509
 510     ctx->decoder_guid   = device_guid;
 511     ctx->decoder_config = config;
 512
 513     dxva_ctx->cfg           = &ctx->decoder_config;
 514     dxva_ctx->decoder       = frames_hwctx->decoder_to_release;
 515     dxva_ctx->surface       = frames_hwctx->surfaces;
 516     dxva_ctx->surface_count = frames_hwctx->nb_surfaces;
 517
 518     if (IsEqualGUID(&ctx->decoder_guid, &DXVADDI_Intel_ModeH264_E))
 519         dxva_ctx->workaround |= FF_DXVA2_WORKAROUND_INTEL_CLEARVIDEO;
 520
 521     return 0;
 522 fail:
 523     av_buffer_unref(&ctx->hw_frames_ctx);
 524     return AVERROR(EINVAL);
 525 }
 526
 527 int dxva2_init(AVCodecContext *s)
 528 {
 529     InputStream *ist = s->opaque;
 530     int loglevel = (ist->hwaccel_id == HWACCEL_AUTO) ? AV_LOG_VERBOSE : AV_LOG_ERROR;
 531     DXVA2Context *ctx;
 532     int ret;
 533
 534     if (!ist->hwaccel_ctx) {
 535         ret = dxva2_alloc(s);
 536         if (ret < 0)
 537             return ret;
 538     }
 539     ctx = ist->hwaccel_ctx;
 540
 541     if (s->codec_id == AV_CODEC_ID_H264 &&
 542         (s->profile & ~FF_PROFILE_H264_CONSTRAINED) > FF_PROFILE_H264_HIGH) {
 543         av_log(NULL, loglevel, "Unsupported H.264 profile for DXVA2 HWAccel: %d\n", s->profile);
 544         return AVERROR(EINVAL);
 545     }
 546
 547     if (s->codec_id == AV_CODEC_ID_HEVC &&
 548         s->profile != FF_PROFILE_HEVC_MAIN && s->profile != FF_PROFILE_HEVC_MAIN_10) {
 549         av_log(NULL, loglevel, "Unsupported HEVC profile for DXVA2 HWAccel: %d\n", s->profile);
 550         return AVERROR(EINVAL);
 551     }
 552
 553     av_buffer_unref(&ctx->hw_frames_ctx);
 554
 555     ret = dxva2_create_decoder(s);
 556     if (ret < 0) {
 557         av_log(NULL, loglevel, "Error creating the DXVA2 decoder\n");
 558         return ret;
 559     }
 560
 561     return 0;
 562 }