Move extralibs variables using ldl after ldl definition
[ffmpeg.git] / 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_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     int i;
125
126     if (ctx->surfaces) {
127         for (i = 0; i < ctx->num_surfaces; i++) {
128             if (ctx->surfaces[i])
129                 IDirect3DSurface9_Release(ctx->surfaces[i]);
130         }
131     }
132     av_freep(&ctx->surfaces);
133     av_freep(&ctx->surface_infos);
134     ctx->num_surfaces = 0;
135     ctx->surface_age  = 0;
136
137     if (ctx->decoder) {
138         IDirectXVideoDecoder_Release(ctx->decoder);
139         ctx->decoder = NULL;
140     }
141 }
142
143 static void dxva2_uninit(AVCodecContext *s)
144 {
145     InputStream  *ist = s->opaque;
146     DXVA2Context *ctx = ist->hwaccel_ctx;
147
148     ist->hwaccel_uninit        = NULL;
149     ist->hwaccel_get_buffer    = NULL;
150     ist->hwaccel_retrieve_data = NULL;
151
152     if (ctx->decoder)
153         dxva2_destroy_decoder(s);
154
155     if (ctx->decoder_service)
156         IDirectXVideoDecoderService_Release(ctx->decoder_service);
157
158     if (ctx->d3d9devmgr && ctx->deviceHandle != INVALID_HANDLE_VALUE)
159         IDirect3DDeviceManager9_CloseDeviceHandle(ctx->d3d9devmgr, ctx->deviceHandle);
160
161     if (ctx->d3d9devmgr)
162         IDirect3DDeviceManager9_Release(ctx->d3d9devmgr);
163
164     if (ctx->d3d9device)
165         IDirect3DDevice9_Release(ctx->d3d9device);
166
167     if (ctx->d3d9)
168         IDirect3D9_Release(ctx->d3d9);
169
170     if (ctx->d3dlib)
171         FreeLibrary(ctx->d3dlib);
172
173     if (ctx->dxva2lib)
174         FreeLibrary(ctx->dxva2lib);
175
176     av_frame_free(&ctx->tmp_frame);
177
178     av_freep(&ist->hwaccel_ctx);
179     av_freep(&s->hwaccel_context);
180 }
181
182 static void dxva2_release_buffer(void *opaque, uint8_t *data)
183 {
184     DXVA2SurfaceWrapper *w   = opaque;
185     DXVA2Context        *ctx = w->ctx;
186     int i;
187
188     for (i = 0; i < ctx->num_surfaces; i++) {
189         if (ctx->surfaces[i] == w->surface) {
190             ctx->surface_infos[i].used = 0;
191             break;
192         }
193     }
194     IDirect3DSurface9_Release(w->surface);
195     IDirectXVideoDecoder_Release(w->decoder);
196     av_free(w);
197 }
198
199 static int dxva2_get_buffer(AVCodecContext *s, AVFrame *frame, int flags)
200 {
201     InputStream  *ist = s->opaque;
202     DXVA2Context *ctx = ist->hwaccel_ctx;
203     int i, old_unused = -1;
204     LPDIRECT3DSURFACE9 surface;
205     DXVA2SurfaceWrapper *w = NULL;
206
207     av_assert0(frame->format == AV_PIX_FMT_DXVA2_VLD);
208
209     for (i = 0; i < ctx->num_surfaces; i++) {
210         surface_info *info = &ctx->surface_infos[i];
211         if (!info->used && (old_unused == -1 || info->age < ctx->surface_infos[old_unused].age))
212             old_unused = i;
213     }
214     if (old_unused == -1) {
215         av_log(NULL, AV_LOG_ERROR, "No free DXVA2 surface!\n");
216         return AVERROR(ENOMEM);
217     }
218     i = old_unused;
219
220     surface = ctx->surfaces[i];
221
222     w = av_mallocz(sizeof(*w));
223     if (!w)
224         return AVERROR(ENOMEM);
225
226     frame->buf[0] = av_buffer_create((uint8_t*)surface, 0,
227                                      dxva2_release_buffer, w,
228                                      AV_BUFFER_FLAG_READONLY);
229     if (!frame->buf[0]) {
230         av_free(w);
231         return AVERROR(ENOMEM);
232     }
233
234     w->ctx     = ctx;
235     w->surface = surface;
236     IDirect3DSurface9_AddRef(w->surface);
237     w->decoder = ctx->decoder;
238     IDirectXVideoDecoder_AddRef(w->decoder);
239
240     ctx->surface_infos[i].used = 1;
241     ctx->surface_infos[i].age  = ctx->surface_age++;
242
243     frame->data[3] = (uint8_t *)surface;
244
245     return 0;
246 }
247
248 static int dxva2_retrieve_data(AVCodecContext *s, AVFrame *frame)
249 {
250     LPDIRECT3DSURFACE9 surface =  (LPDIRECT3DSURFACE9)frame->data[3];
251     InputStream        *ist = s->opaque;
252     DXVA2Context       *ctx = ist->hwaccel_ctx;
253     D3DSURFACE_DESC    surfaceDesc;
254     D3DLOCKED_RECT     LockedRect;
255     HRESULT            hr;
256     int                ret;
257
258     IDirect3DSurface9_GetDesc(surface, &surfaceDesc);
259
260     ctx->tmp_frame->width  = frame->width;
261     ctx->tmp_frame->height = frame->height;
262     ctx->tmp_frame->format = AV_PIX_FMT_NV12;
263
264     ret = av_frame_get_buffer(ctx->tmp_frame, 32);
265     if (ret < 0)
266         return ret;
267
268     hr = IDirect3DSurface9_LockRect(surface, &LockedRect, NULL, D3DLOCK_READONLY);
269     if (FAILED(hr)) {
270         av_log(NULL, AV_LOG_ERROR, "Unable to lock DXVA2 surface\n");
271         return AVERROR_UNKNOWN;
272     }
273
274     av_image_copy_plane(ctx->tmp_frame->data[0], ctx->tmp_frame->linesize[0],
275                         (uint8_t*)LockedRect.pBits,
276                         LockedRect.Pitch, frame->width, frame->height);
277
278     av_image_copy_plane(ctx->tmp_frame->data[1], ctx->tmp_frame->linesize[1],
279                         (uint8_t*)LockedRect.pBits + LockedRect.Pitch * surfaceDesc.Height,
280                         LockedRect.Pitch, frame->width, frame->height / 2);
281
282     IDirect3DSurface9_UnlockRect(surface);
283
284     ret = av_frame_copy_props(ctx->tmp_frame, frame);
285     if (ret < 0)
286         goto fail;
287
288     av_frame_unref(frame);
289     av_frame_move_ref(frame, ctx->tmp_frame);
290
291     return 0;
292 fail:
293     av_frame_unref(ctx->tmp_frame);
294     return ret;
295 }
296
297 static int dxva2_alloc(AVCodecContext *s)
298 {
299     InputStream  *ist = s->opaque;
300     int loglevel = (ist->hwaccel_id == HWACCEL_AUTO) ? AV_LOG_VERBOSE : AV_LOG_ERROR;
301     DXVA2Context *ctx;
302     pDirect3DCreate9      *createD3D = NULL;
303     pCreateDeviceManager9 *createDeviceManager = NULL;
304     HRESULT hr;
305     D3DPRESENT_PARAMETERS d3dpp = {0};
306     D3DDISPLAYMODE        d3ddm;
307     unsigned resetToken = 0;
308     UINT adapter = D3DADAPTER_DEFAULT;
309
310     ctx = av_mallocz(sizeof(*ctx));
311     if (!ctx)
312         return AVERROR(ENOMEM);
313
314     ctx->deviceHandle = INVALID_HANDLE_VALUE;
315
316     ist->hwaccel_ctx           = ctx;
317     ist->hwaccel_uninit        = dxva2_uninit;
318     ist->hwaccel_get_buffer    = dxva2_get_buffer;
319     ist->hwaccel_retrieve_data = dxva2_retrieve_data;
320
321     ctx->d3dlib = LoadLibrary("d3d9.dll");
322     if (!ctx->d3dlib) {
323         av_log(NULL, loglevel, "Failed to load D3D9 library\n");
324         goto fail;
325     }
326     ctx->dxva2lib = LoadLibrary("dxva2.dll");
327     if (!ctx->dxva2lib) {
328         av_log(NULL, loglevel, "Failed to load DXVA2 library\n");
329         goto fail;
330     }
331
332     createD3D = (pDirect3DCreate9 *)GetProcAddress(ctx->d3dlib, "Direct3DCreate9");
333     if (!createD3D) {
334         av_log(NULL, loglevel, "Failed to locate Direct3DCreate9\n");
335         goto fail;
336     }
337     createDeviceManager = (pCreateDeviceManager9 *)GetProcAddress(ctx->dxva2lib, "DXVA2CreateDirect3DDeviceManager9");
338     if (!createDeviceManager) {
339         av_log(NULL, loglevel, "Failed to locate DXVA2CreateDirect3DDeviceManager9\n");
340         goto fail;
341     }
342
343     ctx->d3d9 = createD3D(D3D_SDK_VERSION);
344     if (!ctx->d3d9) {
345         av_log(NULL, loglevel, "Failed to create IDirect3D object\n");
346         goto fail;
347     }
348
349     if (ist->hwaccel_device) {
350         adapter = atoi(ist->hwaccel_device);
351         av_log(NULL, AV_LOG_INFO, "Using HWAccel device %d\n", adapter);
352     }
353
354     IDirect3D9_GetAdapterDisplayMode(ctx->d3d9, adapter, &d3ddm);
355     d3dpp.Windowed         = TRUE;
356     d3dpp.BackBufferWidth  = 640;
357     d3dpp.BackBufferHeight = 480;
358     d3dpp.BackBufferCount  = 0;
359     d3dpp.BackBufferFormat = d3ddm.Format;
360     d3dpp.SwapEffect       = D3DSWAPEFFECT_DISCARD;
361     d3dpp.Flags            = D3DPRESENTFLAG_VIDEO;
362
363     hr = IDirect3D9_CreateDevice(ctx->d3d9, adapter, D3DDEVTYPE_HAL, GetShellWindow(),
364                                  D3DCREATE_SOFTWARE_VERTEXPROCESSING | D3DCREATE_MULTITHREADED | D3DCREATE_FPU_PRESERVE,
365                                  &d3dpp, &ctx->d3d9device);
366     if (FAILED(hr)) {
367         av_log(NULL, loglevel, "Failed to create Direct3D device\n");
368         goto fail;
369     }
370
371     hr = createDeviceManager(&resetToken, &ctx->d3d9devmgr);
372     if (FAILED(hr)) {
373         av_log(NULL, loglevel, "Failed to create Direct3D device manager\n");
374         goto fail;
375     }
376
377     hr = IDirect3DDeviceManager9_ResetDevice(ctx->d3d9devmgr, ctx->d3d9device, resetToken);
378     if (FAILED(hr)) {
379         av_log(NULL, loglevel, "Failed to bind Direct3D device to device manager\n");
380         goto fail;
381     }
382
383     hr = IDirect3DDeviceManager9_OpenDeviceHandle(ctx->d3d9devmgr, &ctx->deviceHandle);
384     if (FAILED(hr)) {
385         av_log(NULL, loglevel, "Failed to open device handle\n");
386         goto fail;
387     }
388
389     hr = IDirect3DDeviceManager9_GetVideoService(ctx->d3d9devmgr, ctx->deviceHandle, &IID_IDirectXVideoDecoderService, (void **)&ctx->decoder_service);
390     if (FAILED(hr)) {
391         av_log(NULL, loglevel, "Failed to create IDirectXVideoDecoderService\n");
392         goto fail;
393     }
394
395     ctx->tmp_frame = av_frame_alloc();
396     if (!ctx->tmp_frame)
397         goto fail;
398
399     s->hwaccel_context = av_mallocz(sizeof(struct dxva_context));
400     if (!s->hwaccel_context)
401         goto fail;
402
403     return 0;
404 fail:
405     dxva2_uninit(s);
406     return AVERROR(EINVAL);
407 }
408
409 static int dxva2_get_decoder_configuration(AVCodecContext *s, const GUID *device_guid,
410                                            const DXVA2_VideoDesc *desc,
411                                            DXVA2_ConfigPictureDecode *config)
412 {
413     InputStream  *ist = s->opaque;
414     int loglevel = (ist->hwaccel_id == HWACCEL_AUTO) ? AV_LOG_VERBOSE : AV_LOG_ERROR;
415     DXVA2Context *ctx = ist->hwaccel_ctx;
416     unsigned cfg_count = 0, best_score = 0;
417     DXVA2_ConfigPictureDecode *cfg_list = NULL;
418     DXVA2_ConfigPictureDecode best_cfg = {{0}};
419     HRESULT hr;
420     int i;
421
422     hr = IDirectXVideoDecoderService_GetDecoderConfigurations(ctx->decoder_service, device_guid, desc, NULL, &cfg_count, &cfg_list);
423     if (FAILED(hr)) {
424         av_log(NULL, loglevel, "Unable to retrieve decoder configurations\n");
425         return AVERROR(EINVAL);
426     }
427
428     for (i = 0; i < cfg_count; i++) {
429         DXVA2_ConfigPictureDecode *cfg = &cfg_list[i];
430
431         unsigned score;
432         if (cfg->ConfigBitstreamRaw == 1)
433             score = 1;
434         else if (s->codec_id == AV_CODEC_ID_H264 && cfg->ConfigBitstreamRaw == 2)
435             score = 2;
436         else
437             continue;
438         if (IsEqualGUID(&cfg->guidConfigBitstreamEncryption, &DXVA2_NoEncrypt))
439             score += 16;
440         if (score > best_score) {
441             best_score = score;
442             best_cfg   = *cfg;
443         }
444     }
445     CoTaskMemFree(cfg_list);
446
447     if (!best_score) {
448         av_log(NULL, loglevel, "No valid decoder configuration available\n");
449         return AVERROR(EINVAL);
450     }
451
452     *config = best_cfg;
453     return 0;
454 }
455
456 static int dxva2_create_decoder(AVCodecContext *s)
457 {
458     InputStream  *ist = s->opaque;
459     int loglevel = (ist->hwaccel_id == HWACCEL_AUTO) ? AV_LOG_VERBOSE : AV_LOG_ERROR;
460     DXVA2Context *ctx = ist->hwaccel_ctx;
461     struct dxva_context *dxva_ctx = s->hwaccel_context;
462     GUID *guid_list = NULL;
463     unsigned guid_count = 0, i, j;
464     GUID device_guid = GUID_NULL;
465     D3DFORMAT target_format = 0;
466     DXVA2_VideoDesc desc = { 0 };
467     DXVA2_ConfigPictureDecode config;
468     HRESULT hr;
469     int surface_alignment;
470     int ret;
471
472     hr = IDirectXVideoDecoderService_GetDecoderDeviceGuids(ctx->decoder_service, &guid_count, &guid_list);
473     if (FAILED(hr)) {
474         av_log(NULL, loglevel, "Failed to retrieve decoder device GUIDs\n");
475         goto fail;
476     }
477
478     for (i = 0; dxva2_modes[i].guid; i++) {
479         D3DFORMAT *target_list = NULL;
480         unsigned target_count = 0;
481         const dxva2_mode *mode = &dxva2_modes[i];
482         if (mode->codec != s->codec_id)
483             continue;
484
485         for (j = 0; j < guid_count; j++) {
486             if (IsEqualGUID(mode->guid, &guid_list[j]))
487                 break;
488         }
489         if (j == guid_count)
490             continue;
491
492         hr = IDirectXVideoDecoderService_GetDecoderRenderTargets(ctx->decoder_service, mode->guid, &target_count, &target_list);
493         if (FAILED(hr)) {
494             continue;
495         }
496         for (j = 0; j < target_count; j++) {
497             const D3DFORMAT format = target_list[j];
498             if (format == MKTAG('N','V','1','2')) {
499                 target_format = format;
500                 break;
501             }
502         }
503         CoTaskMemFree(target_list);
504         if (target_format) {
505             device_guid = *mode->guid;
506             break;
507         }
508     }
509     CoTaskMemFree(guid_list);
510
511     if (IsEqualGUID(&device_guid, &GUID_NULL)) {
512         av_log(NULL, loglevel, "No decoder device for codec found\n");
513         goto fail;
514     }
515
516     desc.SampleWidth  = s->coded_width;
517     desc.SampleHeight = s->coded_height;
518     desc.Format       = target_format;
519
520     ret = dxva2_get_decoder_configuration(s, &device_guid, &desc, &config);
521     if (ret < 0) {
522         goto fail;
523     }
524
525     /* decoding MPEG-2 requires additional alignment on some Intel GPUs,
526        but it causes issues for H.264 on certain AMD GPUs..... */
527     if (s->codec_id == AV_CODEC_ID_MPEG2VIDEO)
528         surface_alignment = 32;
529     else
530         surface_alignment = 16;
531
532     /* 4 base work surfaces */
533     ctx->num_surfaces = 4;
534
535     /* add surfaces based on number of possible refs */
536     if (s->codec_id == AV_CODEC_ID_H264)
537         ctx->num_surfaces += 16;
538     else
539         ctx->num_surfaces += 2;
540
541     /* add extra surfaces for frame threading */
542     if (s->active_thread_type & FF_THREAD_FRAME)
543         ctx->num_surfaces += s->thread_count;
544
545     ctx->surfaces      = av_mallocz(ctx->num_surfaces * sizeof(*ctx->surfaces));
546     ctx->surface_infos = av_mallocz(ctx->num_surfaces * sizeof(*ctx->surface_infos));
547
548     if (!ctx->surfaces || !ctx->surface_infos) {
549         av_log(NULL, loglevel, "Unable to allocate surface arrays\n");
550         goto fail;
551     }
552
553     hr = IDirectXVideoDecoderService_CreateSurface(ctx->decoder_service,
554                                                    FFALIGN(s->coded_width, surface_alignment),
555                                                    FFALIGN(s->coded_height, surface_alignment),
556                                                    ctx->num_surfaces - 1,
557                                                    target_format, D3DPOOL_DEFAULT, 0,
558                                                    DXVA2_VideoDecoderRenderTarget,
559                                                    ctx->surfaces, NULL);
560     if (FAILED(hr)) {
561         av_log(NULL, loglevel, "Failed to create %d video surfaces\n", ctx->num_surfaces);
562         goto fail;
563     }
564
565     hr = IDirectXVideoDecoderService_CreateVideoDecoder(ctx->decoder_service, &device_guid,
566                                                         &desc, &config, ctx->surfaces,
567                                                         ctx->num_surfaces, &ctx->decoder);
568     if (FAILED(hr)) {
569         av_log(NULL, loglevel, "Failed to create DXVA2 video decoder\n");
570         goto fail;
571     }
572
573     ctx->decoder_guid   = device_guid;
574     ctx->decoder_config = config;
575
576     dxva_ctx->cfg           = &ctx->decoder_config;
577     dxva_ctx->decoder       = ctx->decoder;
578     dxva_ctx->surface       = ctx->surfaces;
579     dxva_ctx->surface_count = ctx->num_surfaces;
580
581     if (IsEqualGUID(&ctx->decoder_guid, &DXVADDI_Intel_ModeH264_E))
582         dxva_ctx->workaround |= FF_DXVA2_WORKAROUND_INTEL_CLEARVIDEO;
583
584     return 0;
585 fail:
586     dxva2_destroy_decoder(s);
587     return AVERROR(EINVAL);
588 }
589
590 int dxva2_init(AVCodecContext *s)
591 {
592     InputStream *ist = s->opaque;
593     int loglevel = (ist->hwaccel_id == HWACCEL_AUTO) ? AV_LOG_VERBOSE : AV_LOG_ERROR;
594     DXVA2Context *ctx;
595     int ret;
596
597     if (!ist->hwaccel_ctx) {
598         ret = dxva2_alloc(s);
599         if (ret < 0)
600             return ret;
601     }
602     ctx = ist->hwaccel_ctx;
603
604     if (s->codec_id == AV_CODEC_ID_H264 &&
605         (s->profile & ~FF_PROFILE_H264_CONSTRAINED) > FF_PROFILE_H264_HIGH) {
606         av_log(NULL, loglevel, "Unsupported H.264 profile for DXVA2 HWAccel: %d\n", s->profile);
607         return AVERROR(EINVAL);
608     }
609
610     if (ctx->decoder)
611         dxva2_destroy_decoder(s);
612
613     ret = dxva2_create_decoder(s);
614     if (ret < 0) {
615         av_log(NULL, loglevel, "Error creating the DXVA2 decoder\n");
616         return ret;
617     }
618
619     return 0;
620 }