avconv_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 #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 "avconv.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 /* define all the GUIDs used directly here,
  44    to avoid problems with inconsistent dxva2api.h versions in mingw-w64 and different MSVC version */
  45 #include <initguid.h>
  46 DEFINE_GUID(IID_IDirectXVideoDecoderService, 0xfc51a551,0xd5e7,0x11d9,0xaf,0x55,0x00,0x05,0x4e,0x43,0xff,0x02);
  47
  48 DEFINE_GUID(DXVA2_ModeMPEG2_VLD,      0xee27417f, 0x5e28,0x4e65,0xbe,0xea,0x1d,0x26,0xb5,0x08,0xad,0xc9);
  49 DEFINE_GUID(DXVA2_ModeMPEG2and1_VLD,  0x86695f12, 0x340e,0x4f04,0x9f,0xd3,0x92,0x53,0xdd,0x32,0x74,0x60);
  50 DEFINE_GUID(DXVA2_ModeH264_E,         0x1b81be68, 0xa0c7,0x11d3,0xb9,0x84,0x00,0xc0,0x4f,0x2e,0x73,0xc5);
  51 DEFINE_GUID(DXVA2_ModeH264_F,         0x1b81be69, 0xa0c7,0x11d3,0xb9,0x84,0x00,0xc0,0x4f,0x2e,0x73,0xc5);
  52 DEFINE_GUID(DXVADDI_Intel_ModeH264_E, 0x604F8E68, 0x4951,0x4C54,0x88,0xFE,0xAB,0xD2,0x5C,0x15,0xB3,0xD6);
  53 DEFINE_GUID(DXVA2_ModeVC1_D,          0x1b81beA3, 0xa0c7,0x11d3,0xb9,0x84,0x00,0xc0,0x4f,0x2e,0x73,0xc5);
  54 DEFINE_GUID(DXVA2_ModeVC1_D2010,      0x1b81beA4, 0xa0c7,0x11d3,0xb9,0x84,0x00,0xc0,0x4f,0x2e,0x73,0xc5);
  55 DEFINE_GUID(DXVA2_NoEncrypt,          0x1b81beD0, 0xa0c7,0x11d3,0xb9,0x84,0x00,0xc0,0x4f,0x2e,0x73,0xc5);
  56 DEFINE_GUID(GUID_NULL,                0x00000000, 0x0000,0x0000,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00);
  57
  58 typedef IDirect3D9* WINAPI pDirect3DCreate9(UINT);
  59 typedef HRESULT WINAPI pCreateDeviceManager9(UINT *, IDirect3DDeviceManager9 **);
  60
  61 typedef struct dxva2_mode {
  62   const GUID     *guid;
  63   enum AVCodecID codec;
  64 } dxva2_mode;
  65
  66 static const dxva2_mode dxva2_modes[] = {
  67     /* MPEG-2 */
  68     { &DXVA2_ModeMPEG2_VLD,      AV_CODEC_ID_MPEG2VIDEO },
  69     { &DXVA2_ModeMPEG2and1_VLD,  AV_CODEC_ID_MPEG2VIDEO },
  70
  71     /* H.264 */
  72     { &DXVA2_ModeH264_F,         AV_CODEC_ID_H264 },
  73     { &DXVA2_ModeH264_E,         AV_CODEC_ID_H264 },
  74     /* Intel specific H.264 mode */
  75     { &DXVADDI_Intel_ModeH264_E, AV_CODEC_ID_H264 },
  76
  77     /* VC-1 / WMV3 */
  78     { &DXVA2_ModeVC1_D2010,      AV_CODEC_ID_VC1  },
  79     { &DXVA2_ModeVC1_D2010,      AV_CODEC_ID_WMV3 },
  80     { &DXVA2_ModeVC1_D,          AV_CODEC_ID_VC1  },
  81     { &DXVA2_ModeVC1_D,          AV_CODEC_ID_WMV3 },
  82
  83     { NULL,                      0 },
  84 };
  85
  86 typedef struct surface_info {
  87     int used;
  88     uint64_t age;
  89 } surface_info;
  90
  91 typedef struct DXVA2Context {
  92     HMODULE d3dlib;
  93     HMODULE dxva2lib;
  94
  95     HANDLE  deviceHandle;
  96
  97     IDirect3D9                  *d3d9;
  98     IDirect3DDevice9            *d3d9device;
  99     IDirect3DDeviceManager9     *d3d9devmgr;
 100     IDirectXVideoDecoderService *decoder_service;
 101     IDirectXVideoDecoder        *decoder;
 102
 103     GUID                        decoder_guid;
 104     DXVA2_ConfigPictureDecode   decoder_config;
 105
 106     LPDIRECT3DSURFACE9          *surfaces;
 107     surface_info                *surface_infos;
 108     uint32_t                    num_surfaces;
 109     uint64_t                    surface_age;
 110
 111     AVFrame                     *tmp_frame;
 112 } DXVA2Context;
 113
 114 typedef struct DXVA2SurfaceWrapper {
 115     DXVA2Context         *ctx;
 116     LPDIRECT3DSURFACE9   surface;
 117     IDirectXVideoDecoder *decoder;
 118 } DXVA2SurfaceWrapper;
 119
 120 static void dxva2_destroy_decoder(AVCodecContext *s)
 121 {
 122     InputStream  *ist = s->opaque;
 123     DXVA2Context *ctx = ist->hwaccel_ctx;
 124
 125     if (ctx->surfaces) {
 126         for (int i = 0; i < ctx->num_surfaces; i++) {
 127             if (ctx->surfaces[i])
 128                 IDirect3DSurface9_Release(ctx->surfaces[i]);
 129         }
 130     }
 131     av_freep(&ctx->surfaces);
 132     av_freep(&ctx->surface_infos);
 133     ctx->num_surfaces = 0;
 134     ctx->surface_age  = 0;
 135
 136     if (ctx->decoder) {
 137         IDirectXVideoDecoder_Release(ctx->decoder);
 138         ctx->decoder = NULL;
 139     }
 140 }
 141
 142 static void dxva2_uninit(AVCodecContext *s)
 143 {
 144     InputStream  *ist = s->opaque;
 145     DXVA2Context *ctx = ist->hwaccel_ctx;
 146
 147     ist->hwaccel_uninit        = NULL;
 148     ist->hwaccel_get_buffer    = NULL;
 149     ist->hwaccel_retrieve_data = NULL;
 150
 151     if (ctx->decoder)
 152         dxva2_destroy_decoder(s);
 153
 154     if (ctx->decoder_service)
 155         IDirectXVideoDecoderService_Release(ctx->decoder_service);
 156
 157     if (ctx->d3d9devmgr && ctx->deviceHandle != INVALID_HANDLE_VALUE)
 158         IDirect3DDeviceManager9_CloseDeviceHandle(ctx->d3d9devmgr, ctx->deviceHandle);
 159
 160     if (ctx->d3d9devmgr)
 161         IDirect3DDeviceManager9_Release(ctx->d3d9devmgr);
 162
 163     if (ctx->d3d9device)
 164         IDirect3DDevice9_Release(ctx->d3d9device);
 165
 166     if (ctx->d3d9)
 167         IDirect3D9_Release(ctx->d3d9);
 168
 169     if (ctx->d3dlib)
 170         FreeLibrary(ctx->d3dlib);
 171
 172     if (ctx->dxva2lib)
 173         FreeLibrary(ctx->dxva2lib);
 174
 175     av_frame_free(&ctx->tmp_frame);
 176
 177     av_freep(&ist->hwaccel_ctx);
 178     av_freep(&s->hwaccel_context);
 179 }
 180
 181 static void dxva2_release_buffer(void *opaque, uint8_t *data)
 182 {
 183     DXVA2SurfaceWrapper *w   = opaque;
 184     DXVA2Context        *ctx = w->ctx;
 185     int i;
 186
 187     for (i = 0; i < ctx->num_surfaces; i++) {
 188         if (ctx->surfaces[i] == w->surface) {
 189             ctx->surface_infos[i].used = 0;
 190             break;
 191         }
 192     }
 193     IDirect3DSurface9_Release(w->surface);
 194     IDirectXVideoDecoder_Release(w->decoder);
 195     av_free(w);
 196 }
 197
 198 static int dxva2_get_buffer(AVCodecContext *s, AVFrame *frame, int flags)
 199 {
 200     InputStream  *ist = s->opaque;
 201     DXVA2Context *ctx = ist->hwaccel_ctx;
 202     int i, old_unused = -1;
 203     LPDIRECT3DSURFACE9 surface;
 204     DXVA2SurfaceWrapper *w = NULL;
 205
 206     av_assert0(frame->format == AV_PIX_FMT_DXVA2_VLD);
 207
 208     for (i = 0; i < ctx->num_surfaces; i++) {
 209         surface_info *info = &ctx->surface_infos[i];
 210         if (!info->used && (old_unused == -1 || info->age < ctx->surface_infos[old_unused].age))
 211             old_unused = i;
 212     }
 213     if (old_unused == -1) {
 214         av_log(NULL, AV_LOG_ERROR, "No free DXVA2 surface!\n");
 215         return AVERROR(ENOMEM);
 216     }
 217     i = old_unused;
 218
 219     surface = ctx->surfaces[i];
 220
 221     w = av_mallocz(sizeof(*w));
 222     if (!w)
 223         return AVERROR(ENOMEM);
 224
 225     frame->buf[0] = av_buffer_create((uint8_t*)surface, 0,
 226                                      dxva2_release_buffer, w,
 227                                      AV_BUFFER_FLAG_READONLY);
 228     if (!frame->buf[0]) {
 229         av_free(w);
 230         return AVERROR(ENOMEM);
 231     }
 232
 233     w->ctx     = ctx;
 234     w->surface = surface;
 235     IDirect3DSurface9_AddRef(w->surface);
 236     w->decoder = ctx->decoder;
 237     IDirectXVideoDecoder_AddRef(w->decoder);
 238
 239     ctx->surface_infos[i].used = 1;
 240     ctx->surface_infos[i].age  = ctx->surface_age++;
 241
 242     frame->data[3] = (uint8_t *)surface;
 243
 244     return 0;
 245 }
 246
 247 static int dxva2_retrieve_data(AVCodecContext *s, AVFrame *frame)
 248 {
 249     LPDIRECT3DSURFACE9 surface =  (LPDIRECT3DSURFACE9)frame->data[3];
 250     InputStream        *ist = s->opaque;
 251     DXVA2Context       *ctx = ist->hwaccel_ctx;
 252     D3DSURFACE_DESC    surfaceDesc;
 253     D3DLOCKED_RECT     LockedRect;
 254     HRESULT            hr;
 255     int                ret;
 256
 257     IDirect3DSurface9_GetDesc(surface, &surfaceDesc);
 258
 259     ctx->tmp_frame->width  = frame->width;
 260     ctx->tmp_frame->height = frame->height;
 261     ctx->tmp_frame->format = AV_PIX_FMT_NV12;
 262
 263     ret = av_frame_get_buffer(ctx->tmp_frame, 32);
 264     if (ret < 0)
 265         return ret;
 266
 267     hr = IDirect3DSurface9_LockRect(surface, &LockedRect, NULL, D3DLOCK_READONLY);
 268     if (FAILED(hr)) {
 269         av_log(NULL, AV_LOG_ERROR, "Unable to lock DXVA2 surface\n");
 270         return AVERROR_UNKNOWN;
 271     }
 272
 273     av_image_copy_plane(ctx->tmp_frame->data[0], ctx->tmp_frame->linesize[0],
 274                         (uint8_t*)LockedRect.pBits,
 275                         LockedRect.Pitch, frame->width, frame->height);
 276
 277     av_image_copy_plane(ctx->tmp_frame->data[1], ctx->tmp_frame->linesize[1],
 278                         (uint8_t*)LockedRect.pBits + LockedRect.Pitch * surfaceDesc.Height,
 279                         LockedRect.Pitch, frame->width, frame->height / 2);
 280
 281     IDirect3DSurface9_UnlockRect(surface);
 282
 283     ret = av_frame_copy_props(ctx->tmp_frame, frame);
 284     if (ret < 0)
 285         goto fail;
 286
 287     av_frame_unref(frame);
 288     av_frame_move_ref(frame, ctx->tmp_frame);
 289
 290     return 0;
 291 fail:
 292     av_frame_unref(ctx->tmp_frame);
 293     return ret;
 294 }
 295
 296 static int dxva2_alloc(AVCodecContext *s)
 297 {
 298     InputStream  *ist = s->opaque;
 299     int loglevel = (ist->hwaccel_id == HWACCEL_AUTO) ? AV_LOG_VERBOSE : AV_LOG_ERROR;
 300     DXVA2Context *ctx;
 301     pDirect3DCreate9      *createD3D = NULL;
 302     pCreateDeviceManager9 *createDeviceManager = NULL;
 303     HRESULT hr;
 304     D3DPRESENT_PARAMETERS d3dpp = {0};
 305     D3DDISPLAYMODE        d3ddm;
 306     unsigned resetToken = 0;
 307     UINT adapter = D3DADAPTER_DEFAULT;
 308
 309     ctx = av_mallocz(sizeof(*ctx));
 310     if (!ctx)
 311         return AVERROR(ENOMEM);
 312
 313     ctx->deviceHandle = INVALID_HANDLE_VALUE;
 314
 315     ist->hwaccel_ctx           = ctx;
 316     ist->hwaccel_uninit        = dxva2_uninit;
 317     ist->hwaccel_get_buffer    = dxva2_get_buffer;
 318     ist->hwaccel_retrieve_data = dxva2_retrieve_data;
 319
 320     ctx->d3dlib = LoadLibrary("d3d9.dll");
 321     if (!ctx->d3dlib) {
 322         av_log(NULL, loglevel, "Failed to load D3D9 library\n");
 323         goto fail;
 324     }
 325     ctx->dxva2lib = LoadLibrary("dxva2.dll");
 326     if (!ctx->dxva2lib) {
 327         av_log(NULL, loglevel, "Failed to load DXVA2 library\n");
 328         goto fail;
 329     }
 330
 331     createD3D = (pDirect3DCreate9 *)GetProcAddress(ctx->d3dlib, "Direct3DCreate9");
 332     if (!createD3D) {
 333         av_log(NULL, loglevel, "Failed to locate Direct3DCreate9\n");
 334         goto fail;
 335     }
 336     createDeviceManager = (pCreateDeviceManager9 *)GetProcAddress(ctx->dxva2lib, "DXVA2CreateDirect3DDeviceManager9");
 337     if (!createDeviceManager) {
 338         av_log(NULL, loglevel, "Failed to locate DXVA2CreateDirect3DDeviceManager9\n");
 339         goto fail;
 340     }
 341
 342     ctx->d3d9 = createD3D(D3D_SDK_VERSION);
 343     if (!ctx->d3d9) {
 344         av_log(NULL, loglevel, "Failed to create IDirect3D object\n");
 345         goto fail;
 346     }
 347
 348     if (ist->hwaccel_device) {
 349         adapter = atoi(ist->hwaccel_device);
 350         av_log(NULL, AV_LOG_INFO, "Using HWAccel device %d\n", adapter);
 351     }
 352
 353     IDirect3D9_GetAdapterDisplayMode(ctx->d3d9, adapter, &d3ddm);
 354     d3dpp.Windowed         = TRUE;
 355     d3dpp.BackBufferWidth  = 640;
 356     d3dpp.BackBufferHeight = 480;
 357     d3dpp.BackBufferCount  = 0;
 358     d3dpp.BackBufferFormat = d3ddm.Format;
 359     d3dpp.SwapEffect       = D3DSWAPEFFECT_DISCARD;
 360     d3dpp.Flags            = D3DPRESENTFLAG_VIDEO;
 361
 362     hr = IDirect3D9_CreateDevice(ctx->d3d9, adapter, D3DDEVTYPE_HAL, GetShellWindow(),
 363                                  D3DCREATE_SOFTWARE_VERTEXPROCESSING | D3DCREATE_MULTITHREADED | D3DCREATE_FPU_PRESERVE,
 364                                  &d3dpp, &ctx->d3d9device);
 365     if (FAILED(hr)) {
 366         av_log(NULL, loglevel, "Failed to create Direct3D device\n");
 367         goto fail;
 368     }
 369
 370     hr = createDeviceManager(&resetToken, &ctx->d3d9devmgr);
 371     if (FAILED(hr)) {
 372         av_log(NULL, loglevel, "Failed to create Direct3D device manager\n");
 373         goto fail;
 374     }
 375
 376     hr = IDirect3DDeviceManager9_ResetDevice(ctx->d3d9devmgr, ctx->d3d9device, resetToken);
 377     if (FAILED(hr)) {
 378         av_log(NULL, loglevel, "Failed to bind Direct3D device to device manager\n");
 379         goto fail;
 380     }
 381
 382     hr = IDirect3DDeviceManager9_OpenDeviceHandle(ctx->d3d9devmgr, &ctx->deviceHandle);
 383     if (FAILED(hr)) {
 384         av_log(NULL, loglevel, "Failed to open device handle\n");
 385         goto fail;
 386     }
 387
 388     hr = IDirect3DDeviceManager9_GetVideoService(ctx->d3d9devmgr, ctx->deviceHandle, &IID_IDirectXVideoDecoderService, (void **)&ctx->decoder_service);
 389     if (FAILED(hr)) {
 390         av_log(NULL, loglevel, "Failed to create IDirectXVideoDecoderService\n");
 391         goto fail;
 392     }
 393
 394     ctx->tmp_frame = av_frame_alloc();
 395     if (!ctx->tmp_frame)
 396         goto fail;
 397
 398     s->hwaccel_context = av_mallocz(sizeof(struct dxva_context));
 399     if (!s->hwaccel_context)
 400         goto fail;
 401
 402     return 0;
 403 fail:
 404     dxva2_uninit(s);
 405     return AVERROR(EINVAL);
 406 }
 407
 408 static int dxva2_get_decoder_configuration(AVCodecContext *s, const GUID *device_guid,
 409                                            const DXVA2_VideoDesc *desc,
 410                                            DXVA2_ConfigPictureDecode *config)
 411 {
 412     InputStream  *ist = s->opaque;
 413     int loglevel = (ist->hwaccel_id == HWACCEL_AUTO) ? AV_LOG_VERBOSE : AV_LOG_ERROR;
 414     DXVA2Context *ctx = ist->hwaccel_ctx;
 415     unsigned cfg_count = 0, best_score = 0;
 416     DXVA2_ConfigPictureDecode *cfg_list = NULL;
 417     DXVA2_ConfigPictureDecode best_cfg = {{0}};
 418     HRESULT hr;
 419     int i;
 420
 421     hr = IDirectXVideoDecoderService_GetDecoderConfigurations(ctx->decoder_service, device_guid, desc, NULL, &cfg_count, &cfg_list);
 422     if (FAILED(hr)) {
 423         av_log(NULL, loglevel, "Unable to retrieve decoder configurations\n");
 424         return AVERROR(EINVAL);
 425     }
 426
 427     for (i = 0; i < cfg_count; i++) {
 428         DXVA2_ConfigPictureDecode *cfg = &cfg_list[i];
 429
 430         unsigned score;
 431         if (cfg->ConfigBitstreamRaw == 1)
 432             score = 1;
 433         else if (s->codec_id == AV_CODEC_ID_H264 && cfg->ConfigBitstreamRaw == 2)
 434             score = 2;
 435         else
 436             continue;
 437         if (IsEqualGUID(&cfg->guidConfigBitstreamEncryption, &DXVA2_NoEncrypt))
 438             score += 16;
 439         if (score > best_score) {
 440             best_score = score;
 441             best_cfg   = *cfg;
 442         }
 443     }
 444     CoTaskMemFree(cfg_list);
 445
 446     if (!best_score) {
 447         av_log(NULL, loglevel, "No valid decoder configuration available\n");
 448         return AVERROR(EINVAL);
 449     }
 450
 451     *config = best_cfg;
 452     return 0;
 453 }
 454
 455 static int dxva2_create_decoder(AVCodecContext *s)
 456 {
 457     InputStream  *ist = s->opaque;
 458     int loglevel = (ist->hwaccel_id == HWACCEL_AUTO) ? AV_LOG_VERBOSE : AV_LOG_ERROR;
 459     DXVA2Context *ctx = ist->hwaccel_ctx;
 460     struct dxva_context *dxva_ctx = s->hwaccel_context;
 461     GUID *guid_list = NULL;
 462     unsigned guid_count = 0, i, j;
 463     GUID device_guid = GUID_NULL;
 464     D3DFORMAT target_format = 0;
 465     DXVA2_VideoDesc desc = { 0 };
 466     DXVA2_ConfigPictureDecode config;
 467     HRESULT hr;
 468     int surface_alignment;
 469     int ret;
 470
 471     hr = IDirectXVideoDecoderService_GetDecoderDeviceGuids(ctx->decoder_service, &guid_count, &guid_list);
 472     if (FAILED(hr)) {
 473         av_log(NULL, loglevel, "Failed to retrieve decoder device GUIDs\n");
 474         goto fail;
 475     }
 476
 477     for (i = 0; dxva2_modes[i].guid; i++) {
 478         D3DFORMAT *target_list = NULL;
 479         unsigned target_count = 0;
 480         const dxva2_mode *mode = &dxva2_modes[i];
 481         if (mode->codec != s->codec_id)
 482             continue;
 483
 484         for (j = 0; j < guid_count; j++) {
 485             if (IsEqualGUID(mode->guid, &guid_list[j]))
 486                 break;
 487         }
 488         if (j == guid_count)
 489             continue;
 490
 491         hr = IDirectXVideoDecoderService_GetDecoderRenderTargets(ctx->decoder_service, mode->guid, &target_count, &target_list);
 492         if (FAILED(hr)) {
 493             continue;
 494         }
 495         for (j = 0; j < target_count; j++) {
 496             const D3DFORMAT format = target_list[j];
 497             if (format == MKTAG('N','V','1','2')) {
 498                 target_format = format;
 499                 break;
 500             }
 501         }
 502         CoTaskMemFree(target_list);
 503         if (target_format) {
 504             device_guid = *mode->guid;
 505             break;
 506         }
 507     }
 508     CoTaskMemFree(guid_list);
 509
 510     if (IsEqualGUID(&device_guid, &GUID_NULL)) {
 511         av_log(NULL, loglevel, "No decoder device for codec found\n");
 512         goto fail;
 513     }
 514
 515     desc.SampleWidth  = s->coded_width;
 516     desc.SampleHeight = s->coded_height;
 517     desc.Format       = target_format;
 518
 519     ret = dxva2_get_decoder_configuration(s, &device_guid, &desc, &config);
 520     if (ret < 0) {
 521         goto fail;
 522     }
 523
 524     /* decoding MPEG-2 requires additional alignment on some Intel GPUs,
 525        but it causes issues for H.264 on certain AMD GPUs..... */
 526     if (s->codec_id == AV_CODEC_ID_MPEG2VIDEO)
 527         surface_alignment = 32;
 528     else
 529         surface_alignment = 16;
 530
 531     /* 4 base work surfaces */
 532     ctx->num_surfaces = 4;
 533
 534     /* add surfaces based on number of possible refs */
 535     if (s->codec_id == AV_CODEC_ID_H264)
 536         ctx->num_surfaces += 16;
 537     else
 538         ctx->num_surfaces += 2;
 539
 540     /* add extra surfaces for frame threading */
 541     if (s->active_thread_type & FF_THREAD_FRAME)
 542         ctx->num_surfaces += s->thread_count;
 543
 544     ctx->surfaces      = av_mallocz(ctx->num_surfaces * sizeof(*ctx->surfaces));
 545     ctx->surface_infos = av_mallocz(ctx->num_surfaces * sizeof(*ctx->surface_infos));
 546
 547     if (!ctx->surfaces || !ctx->surface_infos) {
 548         av_log(NULL, loglevel, "Unable to allocate surface arrays\n");
 549         goto fail;
 550     }
 551
 552     hr = IDirectXVideoDecoderService_CreateSurface(ctx->decoder_service,
 553                                                    FFALIGN(s->coded_width, surface_alignment),
 554                                                    FFALIGN(s->coded_height, surface_alignment),
 555                                                    ctx->num_surfaces - 1,
 556                                                    target_format, D3DPOOL_DEFAULT, 0,
 557                                                    DXVA2_VideoDecoderRenderTarget,
 558                                                    ctx->surfaces, NULL);
 559     if (FAILED(hr)) {
 560         av_log(NULL, loglevel, "Failed to create %d video surfaces\n", ctx->num_surfaces);
 561         goto fail;
 562     }
 563
 564     hr = IDirectXVideoDecoderService_CreateVideoDecoder(ctx->decoder_service, &device_guid,
 565                                                         &desc, &config, ctx->surfaces,
 566                                                         ctx->num_surfaces, &ctx->decoder);
 567     if (FAILED(hr)) {
 568         av_log(NULL, loglevel, "Failed to create DXVA2 video decoder\n");
 569         goto fail;
 570     }
 571
 572     ctx->decoder_guid   = device_guid;
 573     ctx->decoder_config = config;
 574
 575     dxva_ctx->cfg           = &ctx->decoder_config;
 576     dxva_ctx->decoder       = ctx->decoder;
 577     dxva_ctx->surface       = ctx->surfaces;
 578     dxva_ctx->surface_count = ctx->num_surfaces;
 579
 580     if (IsEqualGUID(&ctx->decoder_guid, &DXVADDI_Intel_ModeH264_E))
 581         dxva_ctx->workaround |= FF_DXVA2_WORKAROUND_INTEL_CLEARVIDEO;
 582
 583     return 0;
 584 fail:
 585     dxva2_destroy_decoder(s);
 586     return AVERROR(EINVAL);
 587 }
 588
 589 int dxva2_init(AVCodecContext *s)
 590 {
 591     InputStream *ist = s->opaque;
 592     int loglevel = (ist->hwaccel_id == HWACCEL_AUTO) ? AV_LOG_VERBOSE : AV_LOG_ERROR;
 593     DXVA2Context *ctx;
 594     int ret;
 595
 596     if (!ist->hwaccel_ctx) {
 597         ret = dxva2_alloc(s);
 598         if (ret < 0)
 599             return ret;
 600     }
 601     ctx = ist->hwaccel_ctx;
 602
 603     if (s->codec_id == AV_CODEC_ID_H264 &&
 604         (s->profile & ~FF_PROFILE_H264_CONSTRAINED) > FF_PROFILE_H264_HIGH) {
 605         av_log(NULL, loglevel, "Unsupported H.264 profile for DXVA2 HWAccel: %d\n", s->profile);
 606         return AVERROR(EINVAL);
 607     }
 608
 609     if (ctx->decoder)
 610         dxva2_destroy_decoder(s);
 611
 612     ret = dxva2_create_decoder(s);
 613     if (ret < 0) {
 614         av_log(NULL, loglevel, "Error creating the DXVA2 decoder\n");
 615         return ret;
 616     }
 617
 618     return 0;
 619 }