aboutsummaryrefslogtreecommitdiffstats
path: root/libavcodec/amfenc.c
blob: 0e5117c5a3305f9772e93f5d92e8302a46113bc6 (plain) (blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
/*
 * This file is part of FFmpeg.
 *
 * FFmpeg is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * FFmpeg is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with FFmpeg; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
 */

#include "config.h"

#include "libavutil/avassert.h"
#include "libavutil/imgutils.h"
#include "libavutil/hwcontext.h"
#if CONFIG_D3D11VA
#include "libavutil/hwcontext_d3d11va.h"
#endif
#if CONFIG_DXVA2
#define COBJMACROS
#include "libavutil/hwcontext_dxva2.h"
#endif
#include "libavutil/mem.h"
#include "libavutil/pixdesc.h"
#include "libavutil/time.h"

#include "amfenc.h"
#include "encode.h"
#include "internal.h"

#if CONFIG_D3D11VA
#include <d3d11.h>
#endif

#ifdef _WIN32
#include "compat/w32dlfcn.h"
#else
#include <dlfcn.h>
#endif

#define FFMPEG_AMF_WRITER_ID L"ffmpeg_amf"

#define PTS_PROP L"PtsProp"

const enum AVPixelFormat ff_amf_pix_fmts[] = {
    AV_PIX_FMT_NV12,
    AV_PIX_FMT_YUV420P,
#if CONFIG_D3D11VA
    AV_PIX_FMT_D3D11,
#endif
#if CONFIG_DXVA2
    AV_PIX_FMT_DXVA2_VLD,
#endif
    AV_PIX_FMT_NONE
};

typedef struct FormatMap {
    enum AVPixelFormat       av_format;
    enum AMF_SURFACE_FORMAT  amf_format;
} FormatMap;

static const FormatMap format_map[] =
{
    { AV_PIX_FMT_NONE,       AMF_SURFACE_UNKNOWN },
    { AV_PIX_FMT_NV12,       AMF_SURFACE_NV12 },
    { AV_PIX_FMT_BGR0,       AMF_SURFACE_BGRA },
    { AV_PIX_FMT_RGB0,       AMF_SURFACE_RGBA },
    { AV_PIX_FMT_GRAY8,      AMF_SURFACE_GRAY8 },
    { AV_PIX_FMT_YUV420P,    AMF_SURFACE_YUV420P },
    { AV_PIX_FMT_YUYV422,    AMF_SURFACE_YUY2 },
};

static enum AMF_SURFACE_FORMAT amf_av_to_amf_format(enum AVPixelFormat fmt)
{
    int i;
    for (i = 0; i < amf_countof(format_map); i++) {
        if (format_map[i].av_format == fmt) {
            return format_map[i].amf_format;
        }
    }
    return AMF_SURFACE_UNKNOWN;
}

static void AMF_CDECL_CALL AMFTraceWriter_Write(AMFTraceWriter *pThis,
    const wchar_t *scope, const wchar_t *message)
{
    AmfTraceWriter *tracer = (AmfTraceWriter*)pThis;
    av_log(tracer->avctx, AV_LOG_DEBUG, "%ls: %ls", scope, message); // \n is provided from AMF
}

static void AMF_CDECL_CALL AMFTraceWriter_Flush(AMFTraceWriter *pThis)
{
}

static AMFTraceWriterVtbl tracer_vtbl =
{
    .Write = AMFTraceWriter_Write,
    .Flush = AMFTraceWriter_Flush,
};

static int amf_load_library(AVCodecContext *avctx)
{
    AmfContext        *ctx = avctx->priv_data;
    AMFInit_Fn         init_fun;
    AMFQueryVersion_Fn version_fun;
    AMF_RESULT         res;

    ctx->delayed_frame = av_frame_alloc();
    if (!ctx->delayed_frame) {
        return AVERROR(ENOMEM);
    }
    // hardcoded to current HW queue size - will auto-realloc if too small
    ctx->timestamp_list = av_fifo_alloc2(avctx->max_b_frames + 16, sizeof(int64_t),
                                         AV_FIFO_FLAG_AUTO_GROW);
    if (!ctx->timestamp_list) {
        return AVERROR(ENOMEM);
    }
    ctx->dts_delay = 0;


    ctx->library = dlopen(AMF_DLL_NAMEA, RTLD_NOW | RTLD_LOCAL);
    AMF_RETURN_IF_FALSE(ctx, ctx->library != NULL,
        AVERROR_UNKNOWN, "DLL %s failed to open\n", AMF_DLL_NAMEA);

    init_fun = (AMFInit_Fn)dlsym(ctx->library, AMF_INIT_FUNCTION_NAME);
    AMF_RETURN_IF_FALSE(ctx, init_fun != NULL, AVERROR_UNKNOWN, "DLL %s failed to find function %s\n", AMF_DLL_NAMEA, AMF_INIT_FUNCTION_NAME);

    version_fun = (AMFQueryVersion_Fn)dlsym(ctx->library, AMF_QUERY_VERSION_FUNCTION_NAME);
    AMF_RETURN_IF_FALSE(ctx, version_fun != NULL, AVERROR_UNKNOWN, "DLL %s failed to find function %s\n", AMF_DLL_NAMEA, AMF_QUERY_VERSION_FUNCTION_NAME);

    res = version_fun(&ctx->version);
    AMF_RETURN_IF_FALSE(ctx, res == AMF_OK, AVERROR_UNKNOWN, "%s failed with error %d\n", AMF_QUERY_VERSION_FUNCTION_NAME, res);
    res = init_fun(AMF_FULL_VERSION, &ctx->factory);
    AMF_RETURN_IF_FALSE(ctx, res == AMF_OK, AVERROR_UNKNOWN, "%s failed with error %d\n", AMF_INIT_FUNCTION_NAME, res);
    res = ctx->factory->pVtbl->GetTrace(ctx->factory, &ctx->trace);
    AMF_RETURN_IF_FALSE(ctx, res == AMF_OK, AVERROR_UNKNOWN, "GetTrace() failed with error %d\n", res);
    res = ctx->factory->pVtbl->GetDebug(ctx->factory, &ctx->debug);
    AMF_RETURN_IF_FALSE(ctx, res == AMF_OK, AVERROR_UNKNOWN, "GetDebug() failed with error %d\n", res);
    return 0;
}

#if CONFIG_D3D11VA
static int amf_init_from_d3d11_device(AVCodecContext *avctx, AVD3D11VADeviceContext *hwctx)
{
    AmfContext *ctx = avctx->priv_data;
    AMF_RESULT res;

    res = ctx->context->pVtbl->InitDX11(ctx->context, hwctx->device, AMF_DX11_1);
    if (res != AMF_OK) {
        if (res == AMF_NOT_SUPPORTED)
            av_log(avctx, AV_LOG_ERROR, "AMF via D3D11 is not supported on the given device.\n");
        else
            av_log(avctx, AV_LOG_ERROR, "AMF failed to initialise on the given D3D11 device: %d.\n", res);
        return AVERROR(ENODEV);
    }

    return 0;
}
#endif

#if CONFIG_DXVA2
static int amf_init_from_dxva2_device(AVCodecContext *avctx, AVDXVA2DeviceContext *hwctx)
{
    AmfContext *ctx = avctx->priv_data;
    HANDLE device_handle;
    IDirect3DDevice9 *device;
    HRESULT hr;
    AMF_RESULT res;
    int ret;

    hr = IDirect3DDeviceManager9_OpenDeviceHandle(hwctx->devmgr, &device_handle);
    if (FAILED(hr)) {
        av_log(avctx, AV_LOG_ERROR, "Failed to open device handle for Direct3D9 device: %lx.\n", (unsigned long)hr);
        return AVERROR_EXTERNAL;
    }

    hr = IDirect3DDeviceManager9_LockDevice(hwctx->devmgr, device_handle, &device, FALSE);
    if (SUCCEEDED(hr)) {
        IDirect3DDeviceManager9_UnlockDevice(hwctx->devmgr, device_handle, FALSE);
        ret = 0;
    } else {
        av_log(avctx, AV_LOG_ERROR, "Failed to lock device handle for Direct3D9 device: %lx.\n", (unsigned long)hr);
        ret = AVERROR_EXTERNAL;
    }

    IDirect3DDeviceManager9_CloseDeviceHandle(hwctx->devmgr, device_handle);

    if (ret < 0)
        return ret;

    res = ctx->context->pVtbl->InitDX9(ctx->context, device);

    IDirect3DDevice9_Release(device);

    if (res != AMF_OK) {
        if (res == AMF_NOT_SUPPORTED)
            av_log(avctx, AV_LOG_ERROR, "AMF via D3D9 is not supported on the given device.\n");
        else
            av_log(avctx, AV_LOG_ERROR, "AMF failed to initialise on given D3D9 device: %d.\n", res);
        return AVERROR(ENODEV);
    }

    return 0;
}
#endif

static int amf_init_context(AVCodecContext *avctx)
{
    AmfContext *ctx = avctx->priv_data;
    AMFContext1 *context1 = NULL;
    AMF_RESULT  res;
    av_unused int ret;

    ctx->hwsurfaces_in_queue = 0;
    ctx->hwsurfaces_in_queue_max = 16;

    // configure AMF logger
    // the return of these functions indicates old state and do not affect behaviour
    ctx->trace->pVtbl->EnableWriter(ctx->trace, AMF_TRACE_WRITER_DEBUG_OUTPUT, ctx->log_to_dbg != 0 );
    if (ctx->log_to_dbg)
        ctx->trace->pVtbl->SetWriterLevel(ctx->trace, AMF_TRACE_WRITER_DEBUG_OUTPUT, AMF_TRACE_TRACE);
    ctx->trace->pVtbl->EnableWriter(ctx->trace, AMF_TRACE_WRITER_CONSOLE, 0);
    ctx->trace->pVtbl->SetGlobalLevel(ctx->trace, AMF_TRACE_TRACE);

    // connect AMF logger to av_log
    ctx->tracer.vtbl = &tracer_vtbl;
    ctx->tracer.avctx = avctx;
    ctx->trace->pVtbl->RegisterWriter(ctx->trace, FFMPEG_AMF_WRITER_ID,(AMFTraceWriter*)&ctx->tracer, 1);
    ctx->trace->pVtbl->SetWriterLevel(ctx->trace, FFMPEG_AMF_WRITER_ID, AMF_TRACE_TRACE);

    res = ctx->factory->pVtbl->CreateContext(ctx->factory, &ctx->context);
    AMF_RETURN_IF_FALSE(ctx, res == AMF_OK, AVERROR_UNKNOWN, "CreateContext() failed with error %d\n", res);

    // If a device was passed to the encoder, try to initialise from that.
    if (avctx->hw_frames_ctx) {
        AVHWFramesContext *frames_ctx = (AVHWFramesContext*)avctx->hw_frames_ctx->data;

        if (amf_av_to_amf_format(frames_ctx->sw_format) == AMF_SURFACE_UNKNOWN) {
            av_log(avctx, AV_LOG_ERROR, "Format of input frames context (%s) is not supported by AMF.\n",
                   av_get_pix_fmt_name(frames_ctx->sw_format));
            return AVERROR(EINVAL);
        }

        switch (frames_ctx->device_ctx->type) {
#if CONFIG_D3D11VA
        case AV_HWDEVICE_TYPE_D3D11VA:
            ret = amf_init_from_d3d11_device(avctx, frames_ctx->device_ctx->hwctx);
            if (ret < 0)
                return ret;
            break;
#endif
#if CONFIG_DXVA2
        case AV_HWDEVICE_TYPE_DXVA2:
            ret = amf_init_from_dxva2_device(avctx, frames_ctx->device_ctx->hwctx);
            if (ret < 0)
                return ret;
            break;
#endif
        default:
            av_log(avctx, AV_LOG_ERROR, "AMF initialisation from a %s frames context is not supported.\n",
                   av_hwdevice_get_type_name(frames_ctx->device_ctx->type));
            return AVERROR(ENOSYS);
        }

        ctx->hw_frames_ctx = av_buffer_ref(avctx->hw_frames_ctx);
        if (!ctx->hw_frames_ctx)
            return AVERROR(ENOMEM);

        if (frames_ctx->initial_pool_size > 0)
            ctx->hwsurfaces_in_queue_max = frames_ctx->initial_pool_size - 1;

    } else if (avctx->hw_device_ctx) {
        AVHWDeviceContext *device_ctx = (AVHWDeviceContext*)avctx->hw_device_ctx->data;

        switch (device_ctx->type) {
#if CONFIG_D3D11VA
        case AV_HWDEVICE_TYPE_D3D11VA:
            ret = amf_init_from_d3d11_device(avctx, device_ctx->hwctx);
            if (ret < 0)
                return ret;
            break;
#endif
#if CONFIG_DXVA2
        case AV_HWDEVICE_TYPE_DXVA2:
            ret = amf_init_from_dxva2_device(avctx, device_ctx->hwctx);
            if (ret < 0)
                return ret;
            break;
#endif
        default:
            av_log(avctx, AV_LOG_ERROR, "AMF initialisation from a %s device is not supported.\n",
                   av_hwdevice_get_type_name(device_ctx->type));
            return AVERROR(ENOSYS);
        }

        ctx->hw_device_ctx = av_buffer_ref(avctx->hw_device_ctx);
        if (!ctx->hw_device_ctx)
            return AVERROR(ENOMEM);

    } else {
        res = ctx->context->pVtbl->InitDX11(ctx->context, NULL, AMF_DX11_1);
        if (res == AMF_OK) {
            av_log(avctx, AV_LOG_VERBOSE, "AMF initialisation succeeded via D3D11.\n");
        } else {
            res = ctx->context->pVtbl->InitDX9(ctx->context, NULL);
            if (res == AMF_OK) {
                av_log(avctx, AV_LOG_VERBOSE, "AMF initialisation succeeded via D3D9.\n");
            } else {
                AMFGuid guid = IID_AMFContext1();
                res = ctx->context->pVtbl->QueryInterface(ctx->context, &guid, (void**)&context1);
                AMF_RETURN_IF_FALSE(ctx, res == AMF_OK, AVERROR_UNKNOWN, "CreateContext1() failed with error %d\n", res);

                res = context1->pVtbl->InitVulkan(context1, NULL);
                context1->pVtbl->Release(context1);
                if (res != AMF_OK) {
                    if (res == AMF_NOT_SUPPORTED)
                        av_log(avctx, AV_LOG_ERROR, "AMF via Vulkan is not supported on the given device.\n");
                    else
                        av_log(avctx, AV_LOG_ERROR, "AMF failed to initialise on the given Vulkan device: %d.\n", res);
                    return AVERROR(ENOSYS);
                }
                av_log(avctx, AV_LOG_VERBOSE, "AMF initialisation succeeded via Vulkan.\n");
            }
        }
    }
    return 0;
}

static int amf_init_encoder(AVCodecContext *avctx)
{
    AmfContext        *ctx = avctx->priv_data;
    const wchar_t     *codec_id = NULL;
    AMF_RESULT         res;
    enum AVPixelFormat pix_fmt;

    switch (avctx->codec->id) {
        case AV_CODEC_ID_H264:
            codec_id = AMFVideoEncoderVCE_AVC;
            break;
        case AV_CODEC_ID_HEVC:
            codec_id = AMFVideoEncoder_HEVC;
            break;
        default:
            break;
    }
    AMF_RETURN_IF_FALSE(ctx, codec_id != NULL, AVERROR(EINVAL), "Codec %d is not supported\n", avctx->codec->id);

    if (ctx->hw_frames_ctx)
        pix_fmt = ((AVHWFramesContext*)ctx->hw_frames_ctx->data)->sw_format;
    else
        pix_fmt = avctx->pix_fmt;

    ctx->format = amf_av_to_amf_format(pix_fmt);
    AMF_RETURN_IF_FALSE(ctx, ctx->format != AMF_SURFACE_UNKNOWN, AVERROR(EINVAL),
                        "Format %s is not supported\n", av_get_pix_fmt_name(pix_fmt));

    res = ctx->factory->pVtbl->CreateComponent(ctx->factory, ctx->context, codec_id, &ctx->encoder);
    AMF_RETURN_IF_FALSE(ctx, res == AMF_OK, AVERROR_ENCODER_NOT_FOUND, "CreateComponent(%ls) failed with error %d\n", codec_id, res);

    return 0;
}

int av_cold ff_amf_encode_close(AVCodecContext *avctx)
{
    AmfContext *ctx = avctx->priv_data;

    if (ctx->delayed_surface) {
        ctx->delayed_surface->pVtbl->Release(ctx->delayed_surface);
        ctx->delayed_surface = NULL;
    }

    if (ctx->encoder) {
        ctx->encoder->pVtbl->Terminate(ctx->encoder);
        ctx->encoder->pVtbl->Release(ctx->encoder);
        ctx->encoder = NULL;
    }

    if (ctx->context) {
        ctx->context->pVtbl->Terminate(ctx->context);
        ctx->context->pVtbl->Release(ctx->context);
        ctx->context = NULL;
    }
    av_buffer_unref(&ctx->hw_device_ctx);
    av_buffer_unref(&ctx->hw_frames_ctx);

    if (ctx->trace) {
        ctx->trace->pVtbl->UnregisterWriter(ctx->trace, FFMPEG_AMF_WRITER_ID);
    }
    if (ctx->library) {
        dlclose(ctx->library);
        ctx->library = NULL;
    }
    ctx->trace = NULL;
    ctx->debug = NULL;
    ctx->factory = NULL;
    ctx->version = 0;
    ctx->delayed_drain = 0;
    av_frame_free(&ctx->delayed_frame);
    av_fifo_freep2(&ctx->timestamp_list);

    return 0;
}

static int amf_copy_surface(AVCodecContext *avctx, const AVFrame *frame,
    AMFSurface* surface)
{
    AMFPlane *plane;
    uint8_t  *dst_data[4];
    int       dst_linesize[4];
    int       planes;
    int       i;

    planes = surface->pVtbl->GetPlanesCount(surface);
    av_assert0(planes < FF_ARRAY_ELEMS(dst_data));

    for (i = 0; i < planes; i++) {
        plane = surface->pVtbl->GetPlaneAt(surface, i);
        dst_data[i] = plane->pVtbl->GetNative(plane);
        dst_linesize[i] = plane->pVtbl->GetHPitch(plane);
    }
    av_image_copy(dst_data, dst_linesize,
        (const uint8_t**)frame->data, frame->linesize, frame->format,
        avctx->width, avctx->height);

    return 0;
}

static int amf_copy_buffer(AVCodecContext *avctx, AVPacket *pkt, AMFBuffer *buffer)
{
    AmfContext      *ctx = avctx->priv_data;
    int              ret;
    AMFVariantStruct var = {0};
    int64_t          timestamp = AV_NOPTS_VALUE;
    int64_t          size = buffer->pVtbl->GetSize(buffer);

    if ((ret = ff_get_encode_buffer(avctx, pkt, size, 0)) < 0) {
        return ret;
    }
    memcpy(pkt->data, buffer->pVtbl->GetNative(buffer), size);

    switch (avctx->codec->id) {
        case AV_CODEC_ID_H264:
            buffer->pVtbl->GetProperty(buffer, AMF_VIDEO_ENCODER_OUTPUT_DATA_TYPE, &var);
            if(var.int64Value == AMF_VIDEO_ENCODER_OUTPUT_DATA_TYPE_IDR) {
                pkt->flags = AV_PKT_FLAG_KEY;
            }
            break;
        case AV_CODEC_ID_HEVC:
            buffer->pVtbl->GetProperty(buffer, AMF_VIDEO_ENCODER_HEVC_OUTPUT_DATA_TYPE, &var);
            if (var.int64Value == AMF_VIDEO_ENCODER_HEVC_OUTPUT_DATA_TYPE_IDR) {
                pkt->flags = AV_PKT_FLAG_KEY;
            }
            break;
        default:
            break;
    }

    buffer->pVtbl->GetProperty(buffer, PTS_PROP, &var);

    pkt->pts = var.int64Value; // original pts


    AMF_RETURN_IF_FALSE(ctx, av_fifo_read(ctx->timestamp_list, &timestamp, 1) >= 0,
                        AVERROR_UNKNOWN, "timestamp_list is empty\n");

    // calc dts shift if max_b_frames > 0
    if (avctx->max_b_frames > 0 && ctx->dts_delay == 0) {
        int64_t timestamp_last = AV_NOPTS_VALUE;
        size_t can_read = av_fifo_can_read(ctx->timestamp_list);

        AMF_RETURN_IF_FALSE(ctx, can_read > 0, AVERROR_UNKNOWN,
            "timestamp_list is empty while max_b_frames = %d\n", avctx->max_b_frames);
        av_fifo_peek(ctx->timestamp_list, &timestamp_last, 1, can_read - 1);
        if (timestamp < 0 || timestamp_last < AV_NOPTS_VALUE) {
            return AVERROR(ERANGE);
        }
        ctx->dts_delay = timestamp_last - timestamp;
    }
    pkt->dts = timestamp - ctx->dts_delay;
    return 0;
}

// amfenc API implementation
int ff_amf_encode_init(AVCodecContext *avctx)
{
    int ret;

    if ((ret = amf_load_library(avctx)) == 0) {
        if ((ret = amf_init_context(avctx)) == 0) {
            if ((ret = amf_init_encoder(avctx)) == 0) {
                return 0;
            }
        }
    }
    ff_amf_encode_close(avctx);
    return ret;
}

static AMF_RESULT amf_set_property_buffer(AMFSurface *object, const wchar_t *name, AMFBuffer *val)
{
    AMF_RESULT res;
    AMFVariantStruct var;
    res = AMFVariantInit(&var);
    if (res == AMF_OK) {
        AMFGuid guid_AMFInterface = IID_AMFInterface();
        AMFInterface *amf_interface;
        res = val->pVtbl->QueryInterface(val, &guid_AMFInterface, (void**)&amf_interface);

        if (res == AMF_OK) {
            res = AMFVariantAssignInterface(&var, amf_interface);
            amf_interface->pVtbl->Release(amf_interface);
        }
        if (res == AMF_OK) {
            res = object->pVtbl->SetProperty(object, name, var);
        }
        AMFVariantClear(&var);
    }
    return res;
}

static AMF_RESULT amf_get_property_buffer(AMFData *object, const wchar_t *name, AMFBuffer **val)
{
    AMF_RESULT res;
    AMFVariantStruct var;
    res = AMFVariantInit(&var);
    if (res == AMF_OK) {
        res = object->pVtbl->GetProperty(object, name, &var);
        if (res == AMF_OK) {
            if (var.type == AMF_VARIANT_INTERFACE) {
                AMFGuid guid_AMFBuffer = IID_AMFBuffer();
                AMFInterface *amf_interface = AMFVariantInterface(&var);
                res = amf_interface->pVtbl->QueryInterface(amf_interface, &guid_AMFBuffer, (void**)val);
            } else {
                res = AMF_INVALID_DATA_TYPE;
            }
        }
        AMFVariantClear(&var);
    }
    return res;
}

static AMFBuffer *amf_create_buffer_with_frame_ref(const AVFrame *frame, AMFContext *context)
{
    AVFrame *frame_ref;
    AMFBuffer *frame_ref_storage_buffer = NULL;
    AMF_RESULT res;

    res = context->pVtbl->AllocBuffer(context, AMF_MEMORY_HOST, sizeof(frame_ref), &frame_ref_storage_buffer);
    if (res == AMF_OK) {
        frame_ref = av_frame_clone(frame);
        if (frame_ref) {
            memcpy(frame_ref_storage_buffer->pVtbl->GetNative(frame_ref_storage_buffer), &frame_ref, sizeof(frame_ref));
        } else {
            frame_ref_storage_buffer->pVtbl->Release(frame_ref_storage_buffer);
            frame_ref_storage_buffer = NULL;
        }
    }
    return frame_ref_storage_buffer;
}

static void amf_release_buffer_with_frame_ref(AMFBuffer *frame_ref_storage_buffer)
{
    AVFrame *frame_ref;
    memcpy(&frame_ref, frame_ref_storage_buffer->pVtbl->GetNative(frame_ref_storage_buffer), sizeof(frame_ref));
    av_frame_free(&frame_ref);
    frame_ref_storage_buffer->pVtbl->Release(frame_ref_storage_buffer);
}

int ff_amf_receive_packet(AVCodecContext *avctx, AVPacket *avpkt)
{
    AmfContext *ctx = avctx->priv_data;
    AMFSurface *surface;
    AMF_RESULT  res;
    int         ret;
    AMF_RESULT  res_query;
    AMFData    *data = NULL;
    AVFrame    *frame = ctx->delayed_frame;
    int         block_and_wait;

    if (!ctx->encoder)
        return AVERROR(EINVAL);

    if (!frame->buf[0]) {
        ret = ff_encode_get_frame(avctx, frame);
        if (ret < 0 && ret != AVERROR_EOF)
            return ret;
    }

    if (!frame->buf[0]) { // submit drain
        if (!ctx->eof) { // submit drain one time only
            if (ctx->delayed_surface != NULL) {
                ctx->delayed_drain = 1; // input queue is full: resubmit Drain() in ff_amf_receive_packet
            } else if(!ctx->delayed_drain) {
                res = ctx->encoder->pVtbl->Drain(ctx->encoder);
                if (res == AMF_INPUT_FULL) {
                    ctx->delayed_drain = 1; // input queue is full: resubmit Drain() in ff_amf_receive_packet
                } else {
                    if (res == AMF_OK) {
                        ctx->eof = 1; // drain started
                    }
                    AMF_RETURN_IF_FALSE(ctx, res == AMF_OK, AVERROR_UNKNOWN, "Drain() failed with error %d\n", res);
                }
            }
        }
    } else if (!ctx->delayed_surface) { // submit frame
        int hw_surface = 0;

        // prepare surface from frame
        switch (frame->format) {
#if CONFIG_D3D11VA
        case AV_PIX_FMT_D3D11:
            {
                static const GUID AMFTextureArrayIndexGUID = { 0x28115527, 0xe7c3, 0x4b66, { 0x99, 0xd3, 0x4f, 0x2a, 0xe6, 0xb4, 0x7f, 0xaf } };
                ID3D11Texture2D *texture = (ID3D11Texture2D*)frame->data[0]; // actual texture
                int index = (intptr_t)frame->data[1]; // index is a slice in texture array is - set to tell AMF which slice to use

                av_assert0(frame->hw_frames_ctx       && ctx->hw_frames_ctx &&
                           frame->hw_frames_ctx->data == ctx->hw_frames_ctx->data);

                texture->lpVtbl->SetPrivateData(texture, &AMFTextureArrayIndexGUID, sizeof(index), &index);

                res = ctx->context->pVtbl->CreateSurfaceFromDX11Native(ctx->context, texture, &surface, NULL); // wrap to AMF surface
                AMF_RETURN_IF_FALSE(ctx, res == AMF_OK, AVERROR(ENOMEM), "CreateSurfaceFromDX11Native() failed  with error %d\n", res);

                hw_surface = 1;
            }
            break;
#endif
#if CONFIG_DXVA2
        case AV_PIX_FMT_DXVA2_VLD:
            {
                IDirect3DSurface9 *texture = (IDirect3DSurface9 *)frame->data[3]; // actual texture

                res = ctx->context->pVtbl->CreateSurfaceFromDX9Native(ctx->context, texture, &surface, NULL); // wrap to AMF surface
                AMF_RETURN_IF_FALSE(ctx, res == AMF_OK, AVERROR(ENOMEM), "CreateSurfaceFromDX9Native() failed  with error %d\n", res);

                hw_surface = 1;
            }
            break;
#endif
        default:
            {
                res = ctx->context->pVtbl->AllocSurface(ctx->context, AMF_MEMORY_HOST, ctx->format, avctx->width, avctx->height, &surface);
                AMF_RETURN_IF_FALSE(ctx, res == AMF_OK, AVERROR(ENOMEM), "AllocSurface() failed  with error %d\n", res);
                amf_copy_surface(avctx, frame, surface);
            }
            break;
        }

        if (hw_surface) {
            AMFBuffer *frame_ref_storage_buffer;

            // input HW surfaces can be vertically aligned by 16; tell AMF the real size
            surface->pVtbl->SetCrop(surface, 0, 0, frame->width, frame->height);

            frame_ref_storage_buffer = amf_create_buffer_with_frame_ref(frame, ctx->context);
            AMF_RETURN_IF_FALSE(ctx, frame_ref_storage_buffer != NULL, AVERROR(ENOMEM), "create_buffer_with_frame_ref() returned NULL\n");

            res = amf_set_property_buffer(surface, L"av_frame_ref", frame_ref_storage_buffer);
            AMF_RETURN_IF_FALSE(ctx, res == AMF_OK, AVERROR_UNKNOWN, "SetProperty failed for \"av_frame_ref\" with error %d\n", res);
            ctx->hwsurfaces_in_queue++;
            frame_ref_storage_buffer->pVtbl->Release(frame_ref_storage_buffer);
        }

        surface->pVtbl->SetPts(surface, frame->pts);
        AMF_ASSIGN_PROPERTY_INT64(res, surface, PTS_PROP, frame->pts);

        switch (avctx->codec->id) {
        case AV_CODEC_ID_H264:
            AMF_ASSIGN_PROPERTY_INT64(res, surface, AMF_VIDEO_ENCODER_INSERT_AUD, !!ctx->aud);
            break;
        case AV_CODEC_ID_HEVC:
            AMF_ASSIGN_PROPERTY_INT64(res, surface, AMF_VIDEO_ENCODER_HEVC_INSERT_AUD, !!ctx->aud);
            break;
        default:
            break;
        }

        // submit surface
        res = ctx->encoder->pVtbl->SubmitInput(ctx->encoder, (AMFData*)surface);
        if (res == AMF_INPUT_FULL) { // handle full queue
            //store surface for later submission
            ctx->delayed_surface = surface;
        } else {
            int64_t pts = frame->pts;
            surface->pVtbl->Release(surface);
            AMF_RETURN_IF_FALSE(ctx, res == AMF_OK, AVERROR_UNKNOWN, "SubmitInput() failed with error %d\n", res);

            av_frame_unref(frame);
            ret = av_fifo_write(ctx->timestamp_list, &pts, 1);
            if (ret < 0)
                return ret;
        }
    }


    do {
        block_and_wait = 0;
        // poll data
        res_query = ctx->encoder->pVtbl->QueryOutput(ctx->encoder, &data);
        if (data) {
            // copy data to packet
            AMFBuffer* buffer;
            AMFGuid guid = IID_AMFBuffer();
            data->pVtbl->QueryInterface(data, &guid, (void**)&buffer); // query for buffer interface
            ret = amf_copy_buffer(avctx, avpkt, buffer);

            buffer->pVtbl->Release(buffer);

            if (data->pVtbl->HasProperty(data, L"av_frame_ref")) {
                AMFBuffer *frame_ref_storage_buffer;
                res = amf_get_property_buffer(data, L"av_frame_ref", &frame_ref_storage_buffer);
                AMF_RETURN_IF_FALSE(ctx, res == AMF_OK, AVERROR_UNKNOWN, "GetProperty failed for \"av_frame_ref\" with error %d\n", res);
                amf_release_buffer_with_frame_ref(frame_ref_storage_buffer);
                ctx->hwsurfaces_in_queue--;
            }

            data->pVtbl->Release(data);

            AMF_RETURN_IF_FALSE(ctx, ret >= 0, ret, "amf_copy_buffer() failed with error %d\n", ret);

            if (ctx->delayed_surface != NULL) { // try to resubmit frame
                res = ctx->encoder->pVtbl->SubmitInput(ctx->encoder, (AMFData*)ctx->delayed_surface);
                if (res != AMF_INPUT_FULL) {
                    int64_t pts = ctx->delayed_surface->pVtbl->GetPts(ctx->delayed_surface);
                    ctx->delayed_surface->pVtbl->Release(ctx->delayed_surface);
                    ctx->delayed_surface = NULL;
                    av_frame_unref(ctx->delayed_frame);
                    AMF_RETURN_IF_FALSE(ctx, res == AMF_OK, AVERROR_UNKNOWN, "Repeated SubmitInput() failed with error %d\n", res);

                    ret = av_fifo_write(ctx->timestamp_list, &pts, 1);
                    if (ret < 0)
                        return ret;
                } else {
                    av_log(avctx, AV_LOG_WARNING, "Data acquired but delayed frame submission got AMF_INPUT_FULL- should not happen\n");
                }
            } else if (ctx->delayed_drain) { // try to resubmit drain
                res = ctx->encoder->pVtbl->Drain(ctx->encoder);
                if (res != AMF_INPUT_FULL) {
                    ctx->delayed_drain = 0;
                    ctx->eof = 1; // drain started
                    AMF_RETURN_IF_FALSE(ctx, res == AMF_OK, AVERROR_UNKNOWN, "Repeated Drain() failed with error %d\n", res);
                } else {
                    av_log(avctx, AV_LOG_WARNING, "Data acquired but delayed drain submission got AMF_INPUT_FULL- should not happen\n");
                }
            }
        } else if (ctx->delayed_surface != NULL || ctx->delayed_drain || (ctx->eof && res_query != AMF_EOF) || (ctx->hwsurfaces_in_queue >= ctx->hwsurfaces_in_queue_max)) {
            block_and_wait = 1;
            av_usleep(1000); // wait and poll again
        }
    } while (block_and_wait);

    if (res_query == AMF_EOF) {
        ret = AVERROR_EOF;
    } else if (data == NULL) {
        ret = AVERROR(EAGAIN);
    } else {
        ret = 0;
    }
    return ret;
}

const AVCodecHWConfigInternal *const ff_amfenc_hw_configs[] = {
#if CONFIG_D3D11VA
    HW_CONFIG_ENCODER_FRAMES(D3D11, D3D11VA),
    HW_CONFIG_ENCODER_DEVICE(NONE,  D3D11VA),
#endif
#if CONFIG_DXVA2
    HW_CONFIG_ENCODER_FRAMES(DXVA2_VLD, DXVA2),
    HW_CONFIG_ENCODER_DEVICE(NONE,      DXVA2),
#endif
    NULL,
};