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 /* 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_ModeHEVC_VLD_Main,  0x5b11d51b, 0x2f4c,0x4452,0xbc,0xc3,0x09,0xf2,0xa1,0x16,0x0c,0xc0);
  56 DEFINE_GUID(DXVA2_ModeHEVC_VLD_Main10,0x107af0e0, 0xef1a,0x4d19,0xab,0xa8,0x67,0xa1,0x63,0x07,0x3d,0x13);
  57 DEFINE_GUID(DXVA2_ModeVP9_VLD_Profile0, 0x463707f8, 0xa1d0,0x4585,0x87,0x6d,0x83,0xaa,0x6d,0x60,0xb8,0x9e);
  58 DEFINE_GUID(DXVA2_NoEncrypt,          0x1b81beD0, 0xa0c7,0x11d3,0xb9,0x84,0x00,0xc0,0x4f,0x2e,0x73,0xc5);
  59 DEFINE_GUID(GUID_NULL,                0x00000000, 0x0000,0x0000,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00);
  60
  61 typedef IDirect3D9* WINAPI pDirect3DCreate9(UINT);
  62 typedef HRESULT WINAPI pCreateDeviceManager9(UINT *, IDirect3DDeviceManager9 **);
  63
  64 typedef struct dxva2_mode {
  65   const GUID     *guid;
  66   enum AVCodecID codec;
  67 } dxva2_mode;
  68
  69 static const dxva2_mode dxva2_modes[] = {
  70     /* MPEG-2 */
  71     { &DXVA2_ModeMPEG2_VLD,      AV_CODEC_ID_MPEG2VIDEO },
  72     { &DXVA2_ModeMPEG2and1_VLD,  AV_CODEC_ID_MPEG2VIDEO },
  73
  74     /* H.264 */
  75     { &DXVA2_ModeH264_F,         AV_CODEC_ID_H264 },
  76     { &DXVA2_ModeH264_E,         AV_CODEC_ID_H264 },
  77     /* Intel specific H.264 mode */
  78     { &DXVADDI_Intel_ModeH264_E, AV_CODEC_ID_H264 },
  79
  80     /* VC-1 / WMV3 */
  81     { &DXVA2_ModeVC1_D2010,      AV_CODEC_ID_VC1  },
  82     { &DXVA2_ModeVC1_D2010,      AV_CODEC_ID_WMV3 },
  83     { &DXVA2_ModeVC1_D,          AV_CODEC_ID_VC1  },
  84     { &DXVA2_ModeVC1_D,          AV_CODEC_ID_WMV3 },
  85
  86     /* HEVC/H.265 */
  87     { &DXVA2_ModeHEVC_VLD_Main,  AV_CODEC_ID_HEVC },
  88     { &DXVA2_ModeHEVC_VLD_Main10,AV_CODEC_ID_HEVC },
  89
  90     /* VP8/9 */
  91     { &DXVA2_ModeVP9_VLD_Profile0, AV_CODEC_ID_VP9 },
  92
  93     { NULL,                      0 },
  94 };
  95
  96 typedef struct surface_info {
  97     int used;
  98     uint64_t age;
  99 } surface_info;
 100
 101 typedef struct DXVA2Context {
 102     HMODULE d3dlib;
 103     HMODULE dxva2lib;
 104
 105     HANDLE  deviceHandle;
 106
 107     IDirect3D9                  *d3d9;
 108     IDirect3DDevice9            *d3d9device;
 109     IDirect3DDeviceManager9     *d3d9devmgr;
 110     IDirectXVideoDecoderService *decoder_service;
 111     IDirectXVideoDecoder        *decoder;
 112
 113     GUID                        decoder_guid;
 114     DXVA2_ConfigPictureDecode   decoder_config;
 115
 116     LPDIRECT3DSURFACE9          *surfaces;
 117     surface_info                *surface_infos;
 118     uint32_t                    num_surfaces;
 119     uint64_t                    surface_age;
 120     D3DFORMAT                   surface_format;
 121
 122     AVFrame                     *tmp_frame;
 123 } DXVA2Context;
 124
 125 typedef struct DXVA2SurfaceWrapper {
 126     DXVA2Context         *ctx;
 127     LPDIRECT3DSURFACE9   surface;
 128     IDirectXVideoDecoder *decoder;
 129 } DXVA2SurfaceWrapper;
 130
 131 static void dxva2_destroy_decoder(AVCodecContext *s)
 132 {
 133     InputStream  *ist = s->opaque;
 134     DXVA2Context *ctx = ist->hwaccel_ctx;
 135     int i;
 136
 137     if (ctx->surfaces) {
 138         for (i = 0; i < ctx->num_surfaces; i++) {
 139             if (ctx->surfaces[i])
 140                 IDirect3DSurface9_Release(ctx->surfaces[i]);
 141         }
 142     }
 143     av_freep(&ctx->surfaces);
 144     av_freep(&ctx->surface_infos);
 145     ctx->num_surfaces = 0;
 146     ctx->surface_age  = 0;
 147
 148     if (ctx->decoder) {
 149         IDirectXVideoDecoder_Release(ctx->decoder);
 150         ctx->decoder = NULL;
 151     }
 152 }
 153
 154 static void dxva2_uninit(AVCodecContext *s)
 155 {
 156     InputStream  *ist = s->opaque;
 157     DXVA2Context *ctx = ist->hwaccel_ctx;
 158
 159     ist->hwaccel_uninit        = NULL;
 160     ist->hwaccel_get_buffer    = NULL;
 161     ist->hwaccel_retrieve_data = NULL;
 162
 163     if (ctx->decoder)
 164         dxva2_destroy_decoder(s);
 165
 166     if (ctx->decoder_service)
 167         IDirectXVideoDecoderService_Release(ctx->decoder_service);
 168
 169     if (ctx->d3d9devmgr && ctx->deviceHandle != INVALID_HANDLE_VALUE)
 170         IDirect3DDeviceManager9_CloseDeviceHandle(ctx->d3d9devmgr, ctx->deviceHandle);
 171
 172     if (ctx->d3d9devmgr)
 173         IDirect3DDeviceManager9_Release(ctx->d3d9devmgr);
 174
 175     if (ctx->d3d9device)
 176         IDirect3DDevice9_Release(ctx->d3d9device);
 177
 178     if (ctx->d3d9)
 179         IDirect3D9_Release(ctx->d3d9);
 180
 181     if (ctx->d3dlib)
 182         FreeLibrary(ctx->d3dlib);
 183
 184     if (ctx->dxva2lib)
 185         FreeLibrary(ctx->dxva2lib);
 186
 187     av_frame_free(&ctx->tmp_frame);
 188
 189     av_freep(&ist->hwaccel_ctx);
 190     av_freep(&s->hwaccel_context);
 191 }
 192
 193 static void dxva2_release_buffer(void *opaque, uint8_t *data)
 194 {
 195     DXVA2SurfaceWrapper *w   = opaque;
 196     DXVA2Context        *ctx = w->ctx;
 197     int i;
 198
 199     for (i = 0; i < ctx->num_surfaces; i++) {
 200         if (ctx->surfaces[i] == w->surface) {
 201             ctx->surface_infos[i].used = 0;
 202             break;
 203         }
 204     }
 205     IDirect3DSurface9_Release(w->surface);
 206     IDirectXVideoDecoder_Release(w->decoder);
 207     av_free(w);
 208 }
 209
 210 static int dxva2_get_buffer(AVCodecContext *s, AVFrame *frame, int flags)
 211 {
 212     InputStream  *ist = s->opaque;
 213     DXVA2Context *ctx = ist->hwaccel_ctx;
 214     int i, old_unused = -1;
 215     LPDIRECT3DSURFACE9 surface;
 216     DXVA2SurfaceWrapper *w = NULL;
 217
 218     av_assert0(frame->format == AV_PIX_FMT_DXVA2_VLD);
 219
 220     for (i = 0; i < ctx->num_surfaces; i++) {
 221         surface_info *info = &ctx->surface_infos[i];
 222         if (!info->used && (old_unused == -1 || info->age < ctx->surface_infos[old_unused].age))
 223             old_unused = i;
 224     }
 225     if (old_unused == -1) {
 226         av_log(NULL, AV_LOG_ERROR, "No free DXVA2 surface!\n");
 227         return AVERROR(ENOMEM);
 228     }
 229     i = old_unused;
 230
 231     surface = ctx->surfaces[i];
 232
 233     w = av_mallocz(sizeof(*w));
 234     if (!w)
 235         return AVERROR(ENOMEM);
 236
 237     frame->buf[0] = av_buffer_create((uint8_t*)surface, 0,
 238                                      dxva2_release_buffer, w,
 239                                      AV_BUFFER_FLAG_READONLY);
 240     if (!frame->buf[0]) {
 241         av_free(w);
 242         return AVERROR(ENOMEM);
 243     }
 244
 245     w->ctx     = ctx;
 246     w->surface = surface;
 247     IDirect3DSurface9_AddRef(w->surface);
 248     w->decoder = ctx->decoder;
 249     IDirectXVideoDecoder_AddRef(w->decoder);
 250
 251     ctx->surface_infos[i].used = 1;
 252     ctx->surface_infos[i].age  = ctx->surface_age++;
 253
 254     frame->data[3] = (uint8_t *)surface;
 255
 256     return 0;
 257 }
 258
 259 static int dxva2_retrieve_data(AVCodecContext *s, AVFrame *frame)
 260 {
 261     LPDIRECT3DSURFACE9 surface =  (LPDIRECT3DSURFACE9)frame->data[3];
 262     InputStream        *ist = s->opaque;
 263     DXVA2Context       *ctx = ist->hwaccel_ctx;
 264     D3DSURFACE_DESC    surfaceDesc;
 265     D3DLOCKED_RECT     LockedRect;
 266     HRESULT            hr;
 267     int                ret, nbytes;
 268
 269     IDirect3DSurface9_GetDesc(surface, &surfaceDesc);
 270
 271     ctx->tmp_frame->width  = frame->width;
 272     ctx->tmp_frame->height = frame->height;
 273     switch (ctx->surface_format){
 274     case MKTAG('N','V','1','2'):
 275         ctx->tmp_frame->format = AV_PIX_FMT_NV12;
 276         nbytes = 1;
 277         break;
 278     case MKTAG('P','0','1','0'):
 279         ctx->tmp_frame->format = AV_PIX_FMT_P010;
 280         nbytes = 2;
 281         break;
 282     default:
 283         av_assert0(0);
 284     }
 285
 286     ret = av_frame_get_buffer(ctx->tmp_frame, 32);
 287     if (ret < 0)
 288         return ret;
 289
 290     hr = IDirect3DSurface9_LockRect(surface, &LockedRect, NULL, D3DLOCK_READONLY);
 291     if (FAILED(hr)) {
 292         av_log(NULL, AV_LOG_ERROR, "Unable to lock DXVA2 surface\n");
 293         return AVERROR_UNKNOWN;
 294     }
 295
 296     av_image_copy_plane(ctx->tmp_frame->data[0], ctx->tmp_frame->linesize[0],
 297                         (uint8_t*)LockedRect.pBits,
 298                         LockedRect.Pitch, frame->width * nbytes, frame->height);
 299
 300     av_image_copy_plane(ctx->tmp_frame->data[1], ctx->tmp_frame->linesize[1],
 301                         (uint8_t*)LockedRect.pBits + LockedRect.Pitch * surfaceDesc.Height,
 302                         LockedRect.Pitch, frame->width * nbytes, frame->height / 2);
 303
 304     IDirect3DSurface9_UnlockRect(surface);
 305
 306     ret = av_frame_copy_props(ctx->tmp_frame, frame);
 307     if (ret < 0)
 308         goto fail;
 309
 310     av_frame_unref(frame);
 311     av_frame_move_ref(frame, ctx->tmp_frame);
 312
 313     return 0;
 314 fail:
 315     av_frame_unref(ctx->tmp_frame);
 316     return ret;
 317 }
 318
 319 static int dxva2_alloc(AVCodecContext *s)
 320 {
 321     InputStream  *ist = s->opaque;
 322     int loglevel = (ist->hwaccel_id == HWACCEL_AUTO) ? AV_LOG_VERBOSE : AV_LOG_ERROR;
 323     DXVA2Context *ctx;
 324     pDirect3DCreate9      *createD3D = NULL;
 325     pCreateDeviceManager9 *createDeviceManager = NULL;
 326     HRESULT hr;
 327     D3DPRESENT_PARAMETERS d3dpp = {0};
 328     D3DDISPLAYMODE        d3ddm;
 329     unsigned resetToken = 0;
 330     UINT adapter = D3DADAPTER_DEFAULT;
 331
 332     ctx = av_mallocz(sizeof(*ctx));
 333     if (!ctx)
 334         return AVERROR(ENOMEM);
 335
 336     ctx->deviceHandle = INVALID_HANDLE_VALUE;
 337
 338     ist->hwaccel_ctx           = ctx;
 339     ist->hwaccel_uninit        = dxva2_uninit;
 340     ist->hwaccel_get_buffer    = dxva2_get_buffer;
 341     ist->hwaccel_retrieve_data = dxva2_retrieve_data;
 342
 343     ctx->d3dlib = LoadLibrary("d3d9.dll");
 344     if (!ctx->d3dlib) {
 345         av_log(NULL, loglevel, "Failed to load D3D9 library\n");
 346         goto fail;
 347     }
 348     ctx->dxva2lib = LoadLibrary("dxva2.dll");
 349     if (!ctx->dxva2lib) {
 350         av_log(NULL, loglevel, "Failed to load DXVA2 library\n");
 351         goto fail;
 352     }
 353
 354     createD3D = (pDirect3DCreate9 *)GetProcAddress(ctx->d3dlib, "Direct3DCreate9");
 355     if (!createD3D) {
 356         av_log(NULL, loglevel, "Failed to locate Direct3DCreate9\n");
 357         goto fail;
 358     }
 359     createDeviceManager = (pCreateDeviceManager9 *)GetProcAddress(ctx->dxva2lib, "DXVA2CreateDirect3DDeviceManager9");
 360     if (!createDeviceManager) {
 361         av_log(NULL, loglevel, "Failed to locate DXVA2CreateDirect3DDeviceManager9\n");
 362         goto fail;
 363     }
 364
 365     ctx->d3d9 = createD3D(D3D_SDK_VERSION);
 366     if (!ctx->d3d9) {
 367         av_log(NULL, loglevel, "Failed to create IDirect3D object\n");
 368         goto fail;
 369     }
 370
 371     if (ist->hwaccel_device) {
 372         adapter = atoi(ist->hwaccel_device);
 373         av_log(NULL, AV_LOG_INFO, "Using HWAccel device %d\n", adapter);
 374     }
 375
 376     IDirect3D9_GetAdapterDisplayMode(ctx->d3d9, adapter, &d3ddm);
 377     d3dpp.Windowed         = TRUE;
 378     d3dpp.BackBufferWidth  = 640;
 379     d3dpp.BackBufferHeight = 480;
 380     d3dpp.BackBufferCount  = 0;
 381     d3dpp.BackBufferFormat = d3ddm.Format;
 382     d3dpp.SwapEffect       = D3DSWAPEFFECT_DISCARD;
 383     d3dpp.Flags            = D3DPRESENTFLAG_VIDEO;
 384
 385     hr = IDirect3D9_CreateDevice(ctx->d3d9, adapter, D3DDEVTYPE_HAL, GetDesktopWindow(),
 386                                  D3DCREATE_SOFTWARE_VERTEXPROCESSING | D3DCREATE_MULTITHREADED | D3DCREATE_FPU_PRESERVE,
 387                                  &d3dpp, &ctx->d3d9device);
 388     if (FAILED(hr)) {
 389         av_log(NULL, loglevel, "Failed to create Direct3D device\n");
 390         goto fail;
 391     }
 392
 393     hr = createDeviceManager(&resetToken, &ctx->d3d9devmgr);
 394     if (FAILED(hr)) {
 395         av_log(NULL, loglevel, "Failed to create Direct3D device manager\n");
 396         goto fail;
 397     }
 398
 399     hr = IDirect3DDeviceManager9_ResetDevice(ctx->d3d9devmgr, ctx->d3d9device, resetToken);
 400     if (FAILED(hr)) {
 401         av_log(NULL, loglevel, "Failed to bind Direct3D device to device manager\n");
 402         goto fail;
 403     }
 404
 405     hr = IDirect3DDeviceManager9_OpenDeviceHandle(ctx->d3d9devmgr, &ctx->deviceHandle);
 406     if (FAILED(hr)) {
 407         av_log(NULL, loglevel, "Failed to open device handle\n");
 408         goto fail;
 409     }
 410
 411     hr = IDirect3DDeviceManager9_GetVideoService(ctx->d3d9devmgr, ctx->deviceHandle, &IID_IDirectXVideoDecoderService, (void **)&ctx->decoder_service);
 412     if (FAILED(hr)) {
 413         av_log(NULL, loglevel, "Failed to create IDirectXVideoDecoderService\n");
 414         goto fail;
 415     }
 416
 417     ctx->tmp_frame = av_frame_alloc();
 418     if (!ctx->tmp_frame)
 419         goto fail;
 420
 421     s->hwaccel_context = av_mallocz(sizeof(struct dxva_context));
 422     if (!s->hwaccel_context)
 423         goto fail;
 424
 425     return 0;
 426 fail:
 427     dxva2_uninit(s);
 428     return AVERROR(EINVAL);
 429 }
 430
 431 static int dxva2_get_decoder_configuration(AVCodecContext *s, const GUID *device_guid,
 432                                            const DXVA2_VideoDesc *desc,
 433                                            DXVA2_ConfigPictureDecode *config)
 434 {
 435     InputStream  *ist = s->opaque;
 436     int loglevel = (ist->hwaccel_id == HWACCEL_AUTO) ? AV_LOG_VERBOSE : AV_LOG_ERROR;
 437     DXVA2Context *ctx = ist->hwaccel_ctx;
 438     unsigned cfg_count = 0, best_score = 0;
 439     DXVA2_ConfigPictureDecode *cfg_list = NULL;
 440     DXVA2_ConfigPictureDecode best_cfg = {{0}};
 441     HRESULT hr;
 442     int i;
 443
 444     hr = IDirectXVideoDecoderService_GetDecoderConfigurations(ctx->decoder_service, device_guid, desc, NULL, &cfg_count, &cfg_list);
 445     if (FAILED(hr)) {
 446         av_log(NULL, loglevel, "Unable to retrieve decoder configurations\n");
 447         return AVERROR(EINVAL);
 448     }
 449
 450     for (i = 0; i < cfg_count; i++) {
 451         DXVA2_ConfigPictureDecode *cfg = &cfg_list[i];
 452
 453         unsigned score;
 454         if (cfg->ConfigBitstreamRaw == 1)
 455             score = 1;
 456         else if (s->codec_id == AV_CODEC_ID_H264 && cfg->ConfigBitstreamRaw == 2)
 457             score = 2;
 458         else
 459             continue;
 460         if (IsEqualGUID(&cfg->guidConfigBitstreamEncryption, &DXVA2_NoEncrypt))
 461             score += 16;
 462         if (score > best_score) {
 463             best_score = score;
 464             best_cfg   = *cfg;
 465         }
 466     }
 467     CoTaskMemFree(cfg_list);
 468
 469     if (!best_score) {
 470         av_log(NULL, loglevel, "No valid decoder configuration available\n");
 471         return AVERROR(EINVAL);
 472     }
 473
 474     *config = best_cfg;
 475     return 0;
 476 }
 477
 478 static int dxva2_create_decoder(AVCodecContext *s)
 479 {
 480     InputStream  *ist = s->opaque;
 481     int loglevel = (ist->hwaccel_id == HWACCEL_AUTO) ? AV_LOG_VERBOSE : AV_LOG_ERROR;
 482     DXVA2Context *ctx = ist->hwaccel_ctx;
 483     struct dxva_context *dxva_ctx = s->hwaccel_context;
 484     GUID *guid_list = NULL;
 485     unsigned guid_count = 0, i, j;
 486     GUID device_guid = GUID_NULL;
 487     const D3DFORMAT surface_format = (s->sw_pix_fmt == AV_PIX_FMT_YUV420P10) ? MKTAG('P','0','1','0') : MKTAG('N','V','1','2');
 488     D3DFORMAT target_format = 0;
 489     DXVA2_VideoDesc desc = { 0 };
 490     DXVA2_ConfigPictureDecode config;
 491     HRESULT hr;
 492     int surface_alignment;
 493     int ret;
 494
 495     hr = IDirectXVideoDecoderService_GetDecoderDeviceGuids(ctx->decoder_service, &guid_count, &guid_list);
 496     if (FAILED(hr)) {
 497         av_log(NULL, loglevel, "Failed to retrieve decoder device GUIDs\n");
 498         goto fail;
 499     }
 500
 501     for (i = 0; dxva2_modes[i].guid; i++) {
 502         D3DFORMAT *target_list = NULL;
 503         unsigned target_count = 0;
 504         const dxva2_mode *mode = &dxva2_modes[i];
 505         if (mode->codec != s->codec_id)
 506             continue;
 507
 508         for (j = 0; j < guid_count; j++) {
 509             if (IsEqualGUID(mode->guid, &guid_list[j]))
 510                 break;
 511         }
 512         if (j == guid_count)
 513             continue;
 514
 515         hr = IDirectXVideoDecoderService_GetDecoderRenderTargets(ctx->decoder_service, mode->guid, &target_count, &target_list);
 516         if (FAILED(hr)) {
 517             continue;
 518         }
 519         for (j = 0; j < target_count; j++) {
 520             const D3DFORMAT format = target_list[j];
 521             if (format == surface_format) {
 522                 target_format = format;
 523                 break;
 524             }
 525         }
 526         CoTaskMemFree(target_list);
 527         if (target_format) {
 528             device_guid = *mode->guid;
 529             break;
 530         }
 531     }
 532     CoTaskMemFree(guid_list);
 533
 534     if (IsEqualGUID(&device_guid, &GUID_NULL)) {
 535         av_log(NULL, loglevel, "No decoder device for codec found\n");
 536         goto fail;
 537     }
 538
 539     desc.SampleWidth  = s->coded_width;
 540     desc.SampleHeight = s->coded_height;
 541     desc.Format       = target_format;
 542
 543     ret = dxva2_get_decoder_configuration(s, &device_guid, &desc, &config);
 544     if (ret < 0) {
 545         goto fail;
 546     }
 547
 548     /* decoding MPEG-2 requires additional alignment on some Intel GPUs,
 549        but it causes issues for H.264 on certain AMD GPUs..... */
 550     if (s->codec_id == AV_CODEC_ID_MPEG2VIDEO)
 551         surface_alignment = 32;
 552     /* the HEVC DXVA2 spec asks for 128 pixel aligned surfaces to ensure
 553        all coding features have enough room to work with */
 554     else if  (s->codec_id == AV_CODEC_ID_HEVC)
 555         surface_alignment = 128;
 556     else
 557         surface_alignment = 16;
 558
 559     /* 4 base work surfaces */
 560     ctx->num_surfaces = 4;
 561
 562     /* add surfaces based on number of possible refs */
 563     if (s->codec_id == AV_CODEC_ID_H264 || s->codec_id == AV_CODEC_ID_HEVC)
 564         ctx->num_surfaces += 16;
 565     else if (s->codec_id == AV_CODEC_ID_VP9)
 566         ctx->num_surfaces += 8;
 567     else
 568         ctx->num_surfaces += 2;
 569
 570     /* add extra surfaces for frame threading */
 571     if (s->active_thread_type & FF_THREAD_FRAME)
 572         ctx->num_surfaces += s->thread_count;
 573
 574     ctx->surfaces      = av_mallocz(ctx->num_surfaces * sizeof(*ctx->surfaces));
 575     ctx->surface_infos = av_mallocz(ctx->num_surfaces * sizeof(*ctx->surface_infos));
 576     ctx->surface_format = target_format;
 577
 578     if (!ctx->surfaces || !ctx->surface_infos) {
 579         av_log(NULL, loglevel, "Unable to allocate surface arrays\n");
 580         goto fail;
 581     }
 582
 583     hr = IDirectXVideoDecoderService_CreateSurface(ctx->decoder_service,
 584                                                    FFALIGN(s->coded_width, surface_alignment),
 585                                                    FFALIGN(s->coded_height, surface_alignment),
 586                                                    ctx->num_surfaces - 1,
 587                                                    target_format, D3DPOOL_DEFAULT, 0,
 588                                                    DXVA2_VideoDecoderRenderTarget,
 589                                                    ctx->surfaces, NULL);
 590     if (FAILED(hr)) {
 591         av_log(NULL, loglevel, "Failed to create %d video surfaces\n", ctx->num_surfaces);
 592         goto fail;
 593     }
 594
 595     hr = IDirectXVideoDecoderService_CreateVideoDecoder(ctx->decoder_service, &device_guid,
 596                                                         &desc, &config, ctx->surfaces,
 597                                                         ctx->num_surfaces, &ctx->decoder);
 598     if (FAILED(hr)) {
 599         av_log(NULL, loglevel, "Failed to create DXVA2 video decoder\n");
 600         goto fail;
 601     }
 602
 603     ctx->decoder_guid   = device_guid;
 604     ctx->decoder_config = config;
 605
 606     dxva_ctx->cfg           = &ctx->decoder_config;
 607     dxva_ctx->decoder       = ctx->decoder;
 608     dxva_ctx->surface       = ctx->surfaces;
 609     dxva_ctx->surface_count = ctx->num_surfaces;
 610
 611     if (IsEqualGUID(&ctx->decoder_guid, &DXVADDI_Intel_ModeH264_E))
 612         dxva_ctx->workaround |= FF_DXVA2_WORKAROUND_INTEL_CLEARVIDEO;
 613
 614     return 0;
 615 fail:
 616     dxva2_destroy_decoder(s);
 617     return AVERROR(EINVAL);
 618 }
 619
 620 int dxva2_init(AVCodecContext *s)
 621 {
 622     InputStream *ist = s->opaque;
 623     int loglevel = (ist->hwaccel_id == HWACCEL_AUTO) ? AV_LOG_VERBOSE : AV_LOG_ERROR;
 624     DXVA2Context *ctx;
 625     int ret;
 626
 627     if (!ist->hwaccel_ctx) {
 628         ret = dxva2_alloc(s);
 629         if (ret < 0)
 630             return ret;
 631     }
 632     ctx = ist->hwaccel_ctx;
 633
 634     if (s->codec_id == AV_CODEC_ID_H264 &&
 635         (s->profile & ~FF_PROFILE_H264_CONSTRAINED) > FF_PROFILE_H264_HIGH) {
 636         av_log(NULL, loglevel, "Unsupported H.264 profile for DXVA2 HWAccel: %d\n", s->profile);
 637         return AVERROR(EINVAL);
 638     }
 639
 640     if (s->codec_id == AV_CODEC_ID_HEVC &&
 641         s->profile != FF_PROFILE_HEVC_MAIN && s->profile != FF_PROFILE_HEVC_MAIN_10) {
 642         av_log(NULL, loglevel, "Unsupported HEVC profile for DXVA2 HWAccel: %d\n", s->profile);
 643         return AVERROR(EINVAL);
 644     }
 645
 646     if (ctx->decoder)
 647         dxva2_destroy_decoder(s);
 648
 649     ret = dxva2_create_decoder(s);
 650     if (ret < 0) {
 651         av_log(NULL, loglevel, "Error creating the DXVA2 decoder\n");
 652         return ret;
 653     }
 654
 655     return 0;
 656 }