FFmpeg
amfenc.c
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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 "config.h"
20 #include "config_components.h"
21 
22 #include "libavutil/avassert.h"
23 #include "libavutil/imgutils.h"
24 #include "libavutil/hwcontext.h"
25 #if CONFIG_D3D11VA
27 #endif
28 #if CONFIG_DXVA2
29 #define COBJMACROS
31 #endif
32 #include "libavutil/mem.h"
33 #include "libavutil/pixdesc.h"
34 #include "libavutil/time.h"
35 
36 #include "amfenc.h"
37 #include "encode.h"
38 #include "internal.h"
39 
40 #if CONFIG_D3D11VA
41 #include <d3d11.h>
42 #endif
43 
44 #ifdef _WIN32
45 #include "compat/w32dlfcn.h"
46 #else
47 #include <dlfcn.h>
48 #endif
49 
50 #define FFMPEG_AMF_WRITER_ID L"ffmpeg_amf"
51 
52 #define PTS_PROP L"PtsProp"
53 
57 #if CONFIG_D3D11VA
59 #endif
60 #if CONFIG_DXVA2
62 #endif
64 };
65 
66 typedef struct FormatMap {
68  enum AMF_SURFACE_FORMAT amf_format;
69 } FormatMap;
70 
71 static const FormatMap format_map[] =
72 {
73  { AV_PIX_FMT_NONE, AMF_SURFACE_UNKNOWN },
74  { AV_PIX_FMT_NV12, AMF_SURFACE_NV12 },
75  { AV_PIX_FMT_BGR0, AMF_SURFACE_BGRA },
76  { AV_PIX_FMT_RGB0, AMF_SURFACE_RGBA },
77  { AV_PIX_FMT_GRAY8, AMF_SURFACE_GRAY8 },
78  { AV_PIX_FMT_YUV420P, AMF_SURFACE_YUV420P },
79  { AV_PIX_FMT_YUYV422, AMF_SURFACE_YUY2 },
80 };
81 
82 static enum AMF_SURFACE_FORMAT amf_av_to_amf_format(enum AVPixelFormat fmt)
83 {
84  int i;
85  for (i = 0; i < amf_countof(format_map); i++) {
86  if (format_map[i].av_format == fmt) {
87  return format_map[i].amf_format;
88  }
89  }
90  return AMF_SURFACE_UNKNOWN;
91 }
92 
93 static void AMF_CDECL_CALL AMFTraceWriter_Write(AMFTraceWriter *pThis,
94  const wchar_t *scope, const wchar_t *message)
95 {
96  AmfTraceWriter *tracer = (AmfTraceWriter*)pThis;
97  av_log(tracer->avctx, AV_LOG_DEBUG, "%ls: %ls", scope, message); // \n is provided from AMF
98 }
99 
100 static void AMF_CDECL_CALL AMFTraceWriter_Flush(AMFTraceWriter *pThis)
101 {
102 }
103 
104 static AMFTraceWriterVtbl tracer_vtbl =
105 {
106  .Write = AMFTraceWriter_Write,
107  .Flush = AMFTraceWriter_Flush,
108 };
109 
111 {
112  AmfContext *ctx = avctx->priv_data;
113  AMFInit_Fn init_fun;
114  AMFQueryVersion_Fn version_fun;
115  AMF_RESULT res;
116 
117  ctx->delayed_frame = av_frame_alloc();
118  if (!ctx->delayed_frame) {
119  return AVERROR(ENOMEM);
120  }
121  // hardcoded to current HW queue size - will auto-realloc if too small
122  ctx->timestamp_list = av_fifo_alloc2(avctx->max_b_frames + 16, sizeof(int64_t),
124  if (!ctx->timestamp_list) {
125  return AVERROR(ENOMEM);
126  }
127  ctx->dts_delay = 0;
128 
129 
130  ctx->library = dlopen(AMF_DLL_NAMEA, RTLD_NOW | RTLD_LOCAL);
131  AMF_RETURN_IF_FALSE(ctx, ctx->library != NULL,
132  AVERROR_UNKNOWN, "DLL %s failed to open\n", AMF_DLL_NAMEA);
133 
134  init_fun = (AMFInit_Fn)dlsym(ctx->library, AMF_INIT_FUNCTION_NAME);
135  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);
136 
137  version_fun = (AMFQueryVersion_Fn)dlsym(ctx->library, AMF_QUERY_VERSION_FUNCTION_NAME);
138  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);
139 
140  res = version_fun(&ctx->version);
141  AMF_RETURN_IF_FALSE(ctx, res == AMF_OK, AVERROR_UNKNOWN, "%s failed with error %d\n", AMF_QUERY_VERSION_FUNCTION_NAME, res);
142  res = init_fun(AMF_FULL_VERSION, &ctx->factory);
143  AMF_RETURN_IF_FALSE(ctx, res == AMF_OK, AVERROR_UNKNOWN, "%s failed with error %d\n", AMF_INIT_FUNCTION_NAME, res);
144  res = ctx->factory->pVtbl->GetTrace(ctx->factory, &ctx->trace);
145  AMF_RETURN_IF_FALSE(ctx, res == AMF_OK, AVERROR_UNKNOWN, "GetTrace() failed with error %d\n", res);
146  res = ctx->factory->pVtbl->GetDebug(ctx->factory, &ctx->debug);
147  AMF_RETURN_IF_FALSE(ctx, res == AMF_OK, AVERROR_UNKNOWN, "GetDebug() failed with error %d\n", res);
148  return 0;
149 }
150 
151 #if CONFIG_D3D11VA
152 static int amf_init_from_d3d11_device(AVCodecContext *avctx, AVD3D11VADeviceContext *hwctx)
153 {
154  AmfContext *ctx = avctx->priv_data;
155  AMF_RESULT res;
156 
157  res = ctx->context->pVtbl->InitDX11(ctx->context, hwctx->device, AMF_DX11_1);
158  if (res != AMF_OK) {
159  if (res == AMF_NOT_SUPPORTED)
160  av_log(avctx, AV_LOG_ERROR, "AMF via D3D11 is not supported on the given device.\n");
161  else
162  av_log(avctx, AV_LOG_ERROR, "AMF failed to initialise on the given D3D11 device: %d.\n", res);
163  return AVERROR(ENODEV);
164  }
165 
166  return 0;
167 }
168 #endif
169 
170 #if CONFIG_DXVA2
171 static int amf_init_from_dxva2_device(AVCodecContext *avctx, AVDXVA2DeviceContext *hwctx)
172 {
173  AmfContext *ctx = avctx->priv_data;
174  HANDLE device_handle;
175  IDirect3DDevice9 *device;
176  HRESULT hr;
177  AMF_RESULT res;
178  int ret;
179 
180  hr = IDirect3DDeviceManager9_OpenDeviceHandle(hwctx->devmgr, &device_handle);
181  if (FAILED(hr)) {
182  av_log(avctx, AV_LOG_ERROR, "Failed to open device handle for Direct3D9 device: %lx.\n", (unsigned long)hr);
183  return AVERROR_EXTERNAL;
184  }
185 
186  hr = IDirect3DDeviceManager9_LockDevice(hwctx->devmgr, device_handle, &device, FALSE);
187  if (SUCCEEDED(hr)) {
188  IDirect3DDeviceManager9_UnlockDevice(hwctx->devmgr, device_handle, FALSE);
189  ret = 0;
190  } else {
191  av_log(avctx, AV_LOG_ERROR, "Failed to lock device handle for Direct3D9 device: %lx.\n", (unsigned long)hr);
193  }
194 
195  IDirect3DDeviceManager9_CloseDeviceHandle(hwctx->devmgr, device_handle);
196 
197  if (ret < 0)
198  return ret;
199 
200  res = ctx->context->pVtbl->InitDX9(ctx->context, device);
201 
202  IDirect3DDevice9_Release(device);
203 
204  if (res != AMF_OK) {
205  if (res == AMF_NOT_SUPPORTED)
206  av_log(avctx, AV_LOG_ERROR, "AMF via D3D9 is not supported on the given device.\n");
207  else
208  av_log(avctx, AV_LOG_ERROR, "AMF failed to initialise on given D3D9 device: %d.\n", res);
209  return AVERROR(ENODEV);
210  }
211 
212  return 0;
213 }
214 #endif
215 
217 {
218  AmfContext *ctx = avctx->priv_data;
219  AMFContext1 *context1 = NULL;
220  AMF_RESULT res;
221  av_unused int ret;
222 
223  ctx->hwsurfaces_in_queue = 0;
224  ctx->hwsurfaces_in_queue_max = 16;
225 
226  // configure AMF logger
227  // the return of these functions indicates old state and do not affect behaviour
228  ctx->trace->pVtbl->EnableWriter(ctx->trace, AMF_TRACE_WRITER_DEBUG_OUTPUT, ctx->log_to_dbg != 0 );
229  if (ctx->log_to_dbg)
230  ctx->trace->pVtbl->SetWriterLevel(ctx->trace, AMF_TRACE_WRITER_DEBUG_OUTPUT, AMF_TRACE_TRACE);
231  ctx->trace->pVtbl->EnableWriter(ctx->trace, AMF_TRACE_WRITER_CONSOLE, 0);
232  ctx->trace->pVtbl->SetGlobalLevel(ctx->trace, AMF_TRACE_TRACE);
233 
234  // connect AMF logger to av_log
235  ctx->tracer.vtbl = &tracer_vtbl;
236  ctx->tracer.avctx = avctx;
237  ctx->trace->pVtbl->RegisterWriter(ctx->trace, FFMPEG_AMF_WRITER_ID,(AMFTraceWriter*)&ctx->tracer, 1);
238  ctx->trace->pVtbl->SetWriterLevel(ctx->trace, FFMPEG_AMF_WRITER_ID, AMF_TRACE_TRACE);
239 
240  res = ctx->factory->pVtbl->CreateContext(ctx->factory, &ctx->context);
241  AMF_RETURN_IF_FALSE(ctx, res == AMF_OK, AVERROR_UNKNOWN, "CreateContext() failed with error %d\n", res);
242 
243  // If a device was passed to the encoder, try to initialise from that.
244  if (avctx->hw_frames_ctx) {
245  AVHWFramesContext *frames_ctx = (AVHWFramesContext*)avctx->hw_frames_ctx->data;
246 
247  if (amf_av_to_amf_format(frames_ctx->sw_format) == AMF_SURFACE_UNKNOWN) {
248  av_log(avctx, AV_LOG_ERROR, "Format of input frames context (%s) is not supported by AMF.\n",
249  av_get_pix_fmt_name(frames_ctx->sw_format));
250  return AVERROR(EINVAL);
251  }
252 
253  switch (frames_ctx->device_ctx->type) {
254 #if CONFIG_D3D11VA
256  ret = amf_init_from_d3d11_device(avctx, frames_ctx->device_ctx->hwctx);
257  if (ret < 0)
258  return ret;
259  break;
260 #endif
261 #if CONFIG_DXVA2
263  ret = amf_init_from_dxva2_device(avctx, frames_ctx->device_ctx->hwctx);
264  if (ret < 0)
265  return ret;
266  break;
267 #endif
268  default:
269  av_log(avctx, AV_LOG_ERROR, "AMF initialisation from a %s frames context is not supported.\n",
271  return AVERROR(ENOSYS);
272  }
273 
274  ctx->hw_frames_ctx = av_buffer_ref(avctx->hw_frames_ctx);
275  if (!ctx->hw_frames_ctx)
276  return AVERROR(ENOMEM);
277 
278  if (frames_ctx->initial_pool_size > 0)
279  ctx->hwsurfaces_in_queue_max = frames_ctx->initial_pool_size - 1;
280 
281  } else if (avctx->hw_device_ctx) {
282  AVHWDeviceContext *device_ctx = (AVHWDeviceContext*)avctx->hw_device_ctx->data;
283 
284  switch (device_ctx->type) {
285 #if CONFIG_D3D11VA
287  ret = amf_init_from_d3d11_device(avctx, device_ctx->hwctx);
288  if (ret < 0)
289  return ret;
290  break;
291 #endif
292 #if CONFIG_DXVA2
294  ret = amf_init_from_dxva2_device(avctx, device_ctx->hwctx);
295  if (ret < 0)
296  return ret;
297  break;
298 #endif
299  default:
300  av_log(avctx, AV_LOG_ERROR, "AMF initialisation from a %s device is not supported.\n",
301  av_hwdevice_get_type_name(device_ctx->type));
302  return AVERROR(ENOSYS);
303  }
304 
305  ctx->hw_device_ctx = av_buffer_ref(avctx->hw_device_ctx);
306  if (!ctx->hw_device_ctx)
307  return AVERROR(ENOMEM);
308 
309  } else {
310  res = ctx->context->pVtbl->InitDX11(ctx->context, NULL, AMF_DX11_1);
311  if (res == AMF_OK) {
312  av_log(avctx, AV_LOG_VERBOSE, "AMF initialisation succeeded via D3D11.\n");
313  } else {
314  res = ctx->context->pVtbl->InitDX9(ctx->context, NULL);
315  if (res == AMF_OK) {
316  av_log(avctx, AV_LOG_VERBOSE, "AMF initialisation succeeded via D3D9.\n");
317  } else {
318  AMFGuid guid = IID_AMFContext1();
319  res = ctx->context->pVtbl->QueryInterface(ctx->context, &guid, (void**)&context1);
320  AMF_RETURN_IF_FALSE(ctx, res == AMF_OK, AVERROR_UNKNOWN, "CreateContext1() failed with error %d\n", res);
321 
322  res = context1->pVtbl->InitVulkan(context1, NULL);
323  context1->pVtbl->Release(context1);
324  if (res != AMF_OK) {
325  if (res == AMF_NOT_SUPPORTED)
326  av_log(avctx, AV_LOG_ERROR, "AMF via Vulkan is not supported on the given device.\n");
327  else
328  av_log(avctx, AV_LOG_ERROR, "AMF failed to initialise on the given Vulkan device: %d.\n", res);
329  return AVERROR(ENOSYS);
330  }
331  av_log(avctx, AV_LOG_VERBOSE, "AMF initialisation succeeded via Vulkan.\n");
332  }
333  }
334  }
335  return 0;
336 }
337 
339 {
340  AmfContext *ctx = avctx->priv_data;
341  const wchar_t *codec_id = NULL;
342  AMF_RESULT res;
343  enum AVPixelFormat pix_fmt;
344 
345  switch (avctx->codec->id) {
346  case AV_CODEC_ID_H264:
347  codec_id = AMFVideoEncoderVCE_AVC;
348  break;
349  case AV_CODEC_ID_HEVC:
350  codec_id = AMFVideoEncoder_HEVC;
351  break;
352  default:
353  break;
354  }
355  AMF_RETURN_IF_FALSE(ctx, codec_id != NULL, AVERROR(EINVAL), "Codec %d is not supported\n", avctx->codec->id);
356 
357  if (ctx->hw_frames_ctx)
358  pix_fmt = ((AVHWFramesContext*)ctx->hw_frames_ctx->data)->sw_format;
359  else
360  pix_fmt = avctx->pix_fmt;
361 
362  ctx->format = amf_av_to_amf_format(pix_fmt);
363  AMF_RETURN_IF_FALSE(ctx, ctx->format != AMF_SURFACE_UNKNOWN, AVERROR(EINVAL),
364  "Format %s is not supported\n", av_get_pix_fmt_name(pix_fmt));
365 
366  res = ctx->factory->pVtbl->CreateComponent(ctx->factory, ctx->context, codec_id, &ctx->encoder);
367  AMF_RETURN_IF_FALSE(ctx, res == AMF_OK, AVERROR_ENCODER_NOT_FOUND, "CreateComponent(%ls) failed with error %d\n", codec_id, res);
368 
369  return 0;
370 }
371 
373 {
374  AmfContext *ctx = avctx->priv_data;
375 
376  if (ctx->delayed_surface) {
377  ctx->delayed_surface->pVtbl->Release(ctx->delayed_surface);
378  ctx->delayed_surface = NULL;
379  }
380 
381  if (ctx->encoder) {
382  ctx->encoder->pVtbl->Terminate(ctx->encoder);
383  ctx->encoder->pVtbl->Release(ctx->encoder);
384  ctx->encoder = NULL;
385  }
386 
387  if (ctx->context) {
388  ctx->context->pVtbl->Terminate(ctx->context);
389  ctx->context->pVtbl->Release(ctx->context);
390  ctx->context = NULL;
391  }
392  av_buffer_unref(&ctx->hw_device_ctx);
393  av_buffer_unref(&ctx->hw_frames_ctx);
394 
395  if (ctx->trace) {
396  ctx->trace->pVtbl->UnregisterWriter(ctx->trace, FFMPEG_AMF_WRITER_ID);
397  }
398  if (ctx->library) {
399  dlclose(ctx->library);
400  ctx->library = NULL;
401  }
402  ctx->trace = NULL;
403  ctx->debug = NULL;
404  ctx->factory = NULL;
405  ctx->version = 0;
406  ctx->delayed_drain = 0;
407  av_frame_free(&ctx->delayed_frame);
408  av_fifo_freep2(&ctx->timestamp_list);
409 
410  return 0;
411 }
412 
413 static int amf_copy_surface(AVCodecContext *avctx, const AVFrame *frame,
414  AMFSurface* surface)
415 {
416  AMFPlane *plane;
417  uint8_t *dst_data[4];
418  int dst_linesize[4];
419  int planes;
420  int i;
421 
422  planes = surface->pVtbl->GetPlanesCount(surface);
423  av_assert0(planes < FF_ARRAY_ELEMS(dst_data));
424 
425  for (i = 0; i < planes; i++) {
426  plane = surface->pVtbl->GetPlaneAt(surface, i);
427  dst_data[i] = plane->pVtbl->GetNative(plane);
428  dst_linesize[i] = plane->pVtbl->GetHPitch(plane);
429  }
430  av_image_copy(dst_data, dst_linesize,
431  (const uint8_t**)frame->data, frame->linesize, frame->format,
432  avctx->width, avctx->height);
433 
434  return 0;
435 }
436 
437 static int amf_copy_buffer(AVCodecContext *avctx, AVPacket *pkt, AMFBuffer *buffer)
438 {
439  AmfContext *ctx = avctx->priv_data;
440  int ret;
441  AMFVariantStruct var = {0};
442  int64_t timestamp = AV_NOPTS_VALUE;
443  int64_t size = buffer->pVtbl->GetSize(buffer);
444 
445  if ((ret = ff_get_encode_buffer(avctx, pkt, size, 0)) < 0) {
446  return ret;
447  }
448  memcpy(pkt->data, buffer->pVtbl->GetNative(buffer), size);
449 
450  switch (avctx->codec->id) {
451  case AV_CODEC_ID_H264:
452  buffer->pVtbl->GetProperty(buffer, AMF_VIDEO_ENCODER_OUTPUT_DATA_TYPE, &var);
453  if(var.int64Value == AMF_VIDEO_ENCODER_OUTPUT_DATA_TYPE_IDR) {
455  }
456  break;
457  case AV_CODEC_ID_HEVC:
458  buffer->pVtbl->GetProperty(buffer, AMF_VIDEO_ENCODER_HEVC_OUTPUT_DATA_TYPE, &var);
459  if (var.int64Value == AMF_VIDEO_ENCODER_HEVC_OUTPUT_DATA_TYPE_IDR) {
461  }
462  break;
463  default:
464  break;
465  }
466 
467  buffer->pVtbl->GetProperty(buffer, PTS_PROP, &var);
468 
469  pkt->pts = var.int64Value; // original pts
470 
471 
472  AMF_RETURN_IF_FALSE(ctx, av_fifo_read(ctx->timestamp_list, &timestamp, 1) >= 0,
473  AVERROR_UNKNOWN, "timestamp_list is empty\n");
474 
475  // calc dts shift if max_b_frames > 0
476  if (avctx->max_b_frames > 0 && ctx->dts_delay == 0) {
477  int64_t timestamp_last = AV_NOPTS_VALUE;
478  size_t can_read = av_fifo_can_read(ctx->timestamp_list);
479 
480  AMF_RETURN_IF_FALSE(ctx, can_read > 0, AVERROR_UNKNOWN,
481  "timestamp_list is empty while max_b_frames = %d\n", avctx->max_b_frames);
482  av_fifo_peek(ctx->timestamp_list, &timestamp_last, 1, can_read - 1);
483  if (timestamp < 0 || timestamp_last < AV_NOPTS_VALUE) {
484  return AVERROR(ERANGE);
485  }
486  ctx->dts_delay = timestamp_last - timestamp;
487  }
488  pkt->dts = timestamp - ctx->dts_delay;
489  return 0;
490 }
491 
492 // amfenc API implementation
494 {
495  int ret;
496 
497  if ((ret = amf_load_library(avctx)) == 0) {
498  if ((ret = amf_init_context(avctx)) == 0) {
499  if ((ret = amf_init_encoder(avctx)) == 0) {
500  return 0;
501  }
502  }
503  }
504  ff_amf_encode_close(avctx);
505  return ret;
506 }
507 
508 static AMF_RESULT amf_set_property_buffer(AMFSurface *object, const wchar_t *name, AMFBuffer *val)
509 {
510  AMF_RESULT res;
511  AMFVariantStruct var;
512  res = AMFVariantInit(&var);
513  if (res == AMF_OK) {
514  AMFGuid guid_AMFInterface = IID_AMFInterface();
515  AMFInterface *amf_interface;
516  res = val->pVtbl->QueryInterface(val, &guid_AMFInterface, (void**)&amf_interface);
517 
518  if (res == AMF_OK) {
519  res = AMFVariantAssignInterface(&var, amf_interface);
520  amf_interface->pVtbl->Release(amf_interface);
521  }
522  if (res == AMF_OK) {
523  res = object->pVtbl->SetProperty(object, name, var);
524  }
525  AMFVariantClear(&var);
526  }
527  return res;
528 }
529 
530 static AMF_RESULT amf_get_property_buffer(AMFData *object, const wchar_t *name, AMFBuffer **val)
531 {
532  AMF_RESULT res;
533  AMFVariantStruct var;
534  res = AMFVariantInit(&var);
535  if (res == AMF_OK) {
536  res = object->pVtbl->GetProperty(object, name, &var);
537  if (res == AMF_OK) {
538  if (var.type == AMF_VARIANT_INTERFACE) {
539  AMFGuid guid_AMFBuffer = IID_AMFBuffer();
540  AMFInterface *amf_interface = AMFVariantInterface(&var);
541  res = amf_interface->pVtbl->QueryInterface(amf_interface, &guid_AMFBuffer, (void**)val);
542  } else {
543  res = AMF_INVALID_DATA_TYPE;
544  }
545  }
546  AMFVariantClear(&var);
547  }
548  return res;
549 }
550 
551 static AMFBuffer *amf_create_buffer_with_frame_ref(const AVFrame *frame, AMFContext *context)
552 {
553  AVFrame *frame_ref;
554  AMFBuffer *frame_ref_storage_buffer = NULL;
555  AMF_RESULT res;
556 
557  res = context->pVtbl->AllocBuffer(context, AMF_MEMORY_HOST, sizeof(frame_ref), &frame_ref_storage_buffer);
558  if (res == AMF_OK) {
559  frame_ref = av_frame_clone(frame);
560  if (frame_ref) {
561  memcpy(frame_ref_storage_buffer->pVtbl->GetNative(frame_ref_storage_buffer), &frame_ref, sizeof(frame_ref));
562  } else {
563  frame_ref_storage_buffer->pVtbl->Release(frame_ref_storage_buffer);
564  frame_ref_storage_buffer = NULL;
565  }
566  }
567  return frame_ref_storage_buffer;
568 }
569 
570 static void amf_release_buffer_with_frame_ref(AMFBuffer *frame_ref_storage_buffer)
571 {
572  AVFrame *frame_ref;
573  memcpy(&frame_ref, frame_ref_storage_buffer->pVtbl->GetNative(frame_ref_storage_buffer), sizeof(frame_ref));
574  av_frame_free(&frame_ref);
575  frame_ref_storage_buffer->pVtbl->Release(frame_ref_storage_buffer);
576 }
577 
579 {
580  AmfContext *ctx = avctx->priv_data;
581  AMFSurface *surface;
582  AMF_RESULT res;
583  int ret;
584  AMF_RESULT res_query;
585  AMFData *data = NULL;
586  AVFrame *frame = ctx->delayed_frame;
587  int block_and_wait;
588 
589  if (!ctx->encoder)
590  return AVERROR(EINVAL);
591 
592  if (!frame->buf[0]) {
593  ret = ff_encode_get_frame(avctx, frame);
594  if (ret < 0 && ret != AVERROR_EOF)
595  return ret;
596  }
597 
598  if (!frame->buf[0]) { // submit drain
599  if (!ctx->eof) { // submit drain one time only
600  if (ctx->delayed_surface != NULL) {
601  ctx->delayed_drain = 1; // input queue is full: resubmit Drain() in ff_amf_receive_packet
602  } else if(!ctx->delayed_drain) {
603  res = ctx->encoder->pVtbl->Drain(ctx->encoder);
604  if (res == AMF_INPUT_FULL) {
605  ctx->delayed_drain = 1; // input queue is full: resubmit Drain() in ff_amf_receive_packet
606  } else {
607  if (res == AMF_OK) {
608  ctx->eof = 1; // drain started
609  }
610  AMF_RETURN_IF_FALSE(ctx, res == AMF_OK, AVERROR_UNKNOWN, "Drain() failed with error %d\n", res);
611  }
612  }
613  }
614  } else if (!ctx->delayed_surface) { // submit frame
615  int hw_surface = 0;
616 
617  // prepare surface from frame
618  switch (frame->format) {
619 #if CONFIG_D3D11VA
620  case AV_PIX_FMT_D3D11:
621  {
622  static const GUID AMFTextureArrayIndexGUID = { 0x28115527, 0xe7c3, 0x4b66, { 0x99, 0xd3, 0x4f, 0x2a, 0xe6, 0xb4, 0x7f, 0xaf } };
623  ID3D11Texture2D *texture = (ID3D11Texture2D*)frame->data[0]; // actual texture
624  int index = (intptr_t)frame->data[1]; // index is a slice in texture array is - set to tell AMF which slice to use
625 
626  av_assert0(frame->hw_frames_ctx && ctx->hw_frames_ctx &&
627  frame->hw_frames_ctx->data == ctx->hw_frames_ctx->data);
628 
629  texture->lpVtbl->SetPrivateData(texture, &AMFTextureArrayIndexGUID, sizeof(index), &index);
630 
631  res = ctx->context->pVtbl->CreateSurfaceFromDX11Native(ctx->context, texture, &surface, NULL); // wrap to AMF surface
632  AMF_RETURN_IF_FALSE(ctx, res == AMF_OK, AVERROR(ENOMEM), "CreateSurfaceFromDX11Native() failed with error %d\n", res);
633 
634  hw_surface = 1;
635  }
636  break;
637 #endif
638 #if CONFIG_DXVA2
640  {
641  IDirect3DSurface9 *texture = (IDirect3DSurface9 *)frame->data[3]; // actual texture
642 
643  res = ctx->context->pVtbl->CreateSurfaceFromDX9Native(ctx->context, texture, &surface, NULL); // wrap to AMF surface
644  AMF_RETURN_IF_FALSE(ctx, res == AMF_OK, AVERROR(ENOMEM), "CreateSurfaceFromDX9Native() failed with error %d\n", res);
645 
646  hw_surface = 1;
647  }
648  break;
649 #endif
650  default:
651  {
652  res = ctx->context->pVtbl->AllocSurface(ctx->context, AMF_MEMORY_HOST, ctx->format, avctx->width, avctx->height, &surface);
653  AMF_RETURN_IF_FALSE(ctx, res == AMF_OK, AVERROR(ENOMEM), "AllocSurface() failed with error %d\n", res);
654  amf_copy_surface(avctx, frame, surface);
655  }
656  break;
657  }
658 
659  if (hw_surface) {
660  AMFBuffer *frame_ref_storage_buffer;
661 
662  // input HW surfaces can be vertically aligned by 16; tell AMF the real size
663  surface->pVtbl->SetCrop(surface, 0, 0, frame->width, frame->height);
664 
665  frame_ref_storage_buffer = amf_create_buffer_with_frame_ref(frame, ctx->context);
666  AMF_RETURN_IF_FALSE(ctx, frame_ref_storage_buffer != NULL, AVERROR(ENOMEM), "create_buffer_with_frame_ref() returned NULL\n");
667 
668  res = amf_set_property_buffer(surface, L"av_frame_ref", frame_ref_storage_buffer);
669  AMF_RETURN_IF_FALSE(ctx, res == AMF_OK, AVERROR_UNKNOWN, "SetProperty failed for \"av_frame_ref\" with error %d\n", res);
670  ctx->hwsurfaces_in_queue++;
671  frame_ref_storage_buffer->pVtbl->Release(frame_ref_storage_buffer);
672  }
673 
674  surface->pVtbl->SetPts(surface, frame->pts);
675  AMF_ASSIGN_PROPERTY_INT64(res, surface, PTS_PROP, frame->pts);
676 
677  switch (avctx->codec->id) {
678  case AV_CODEC_ID_H264:
679  AMF_ASSIGN_PROPERTY_INT64(res, surface, AMF_VIDEO_ENCODER_INSERT_AUD, !!ctx->aud);
680  break;
681  case AV_CODEC_ID_HEVC:
682  AMF_ASSIGN_PROPERTY_INT64(res, surface, AMF_VIDEO_ENCODER_HEVC_INSERT_AUD, !!ctx->aud);
683  break;
684  default:
685  break;
686  }
687 
688  // submit surface
689  res = ctx->encoder->pVtbl->SubmitInput(ctx->encoder, (AMFData*)surface);
690  if (res == AMF_INPUT_FULL) { // handle full queue
691  //store surface for later submission
692  ctx->delayed_surface = surface;
693  } else {
694  int64_t pts = frame->pts;
695  surface->pVtbl->Release(surface);
696  AMF_RETURN_IF_FALSE(ctx, res == AMF_OK, AVERROR_UNKNOWN, "SubmitInput() failed with error %d\n", res);
697 
699  ret = av_fifo_write(ctx->timestamp_list, &pts, 1);
700  if (ret < 0)
701  return ret;
702  }
703  }
704 
705 
706  do {
707  block_and_wait = 0;
708  // poll data
709  res_query = ctx->encoder->pVtbl->QueryOutput(ctx->encoder, &data);
710  if (data) {
711  // copy data to packet
712  AMFBuffer* buffer;
713  AMFGuid guid = IID_AMFBuffer();
714  data->pVtbl->QueryInterface(data, &guid, (void**)&buffer); // query for buffer interface
715  ret = amf_copy_buffer(avctx, avpkt, buffer);
716 
717  buffer->pVtbl->Release(buffer);
718 
719  if (data->pVtbl->HasProperty(data, L"av_frame_ref")) {
720  AMFBuffer *frame_ref_storage_buffer;
721  res = amf_get_property_buffer(data, L"av_frame_ref", &frame_ref_storage_buffer);
722  AMF_RETURN_IF_FALSE(ctx, res == AMF_OK, AVERROR_UNKNOWN, "GetProperty failed for \"av_frame_ref\" with error %d\n", res);
723  amf_release_buffer_with_frame_ref(frame_ref_storage_buffer);
724  ctx->hwsurfaces_in_queue--;
725  }
726 
727  data->pVtbl->Release(data);
728 
729  AMF_RETURN_IF_FALSE(ctx, ret >= 0, ret, "amf_copy_buffer() failed with error %d\n", ret);
730 
731  if (ctx->delayed_surface != NULL) { // try to resubmit frame
732  res = ctx->encoder->pVtbl->SubmitInput(ctx->encoder, (AMFData*)ctx->delayed_surface);
733  if (res != AMF_INPUT_FULL) {
734  int64_t pts = ctx->delayed_surface->pVtbl->GetPts(ctx->delayed_surface);
735  ctx->delayed_surface->pVtbl->Release(ctx->delayed_surface);
736  ctx->delayed_surface = NULL;
737  av_frame_unref(ctx->delayed_frame);
738  AMF_RETURN_IF_FALSE(ctx, res == AMF_OK, AVERROR_UNKNOWN, "Repeated SubmitInput() failed with error %d\n", res);
739 
740  ret = av_fifo_write(ctx->timestamp_list, &pts, 1);
741  if (ret < 0)
742  return ret;
743  } else {
744  av_log(avctx, AV_LOG_WARNING, "Data acquired but delayed frame submission got AMF_INPUT_FULL- should not happen\n");
745  }
746  } else if (ctx->delayed_drain) { // try to resubmit drain
747  res = ctx->encoder->pVtbl->Drain(ctx->encoder);
748  if (res != AMF_INPUT_FULL) {
749  ctx->delayed_drain = 0;
750  ctx->eof = 1; // drain started
751  AMF_RETURN_IF_FALSE(ctx, res == AMF_OK, AVERROR_UNKNOWN, "Repeated Drain() failed with error %d\n", res);
752  } else {
753  av_log(avctx, AV_LOG_WARNING, "Data acquired but delayed drain submission got AMF_INPUT_FULL- should not happen\n");
754  }
755  }
756  } else if (ctx->delayed_surface != NULL || ctx->delayed_drain || (ctx->eof && res_query != AMF_EOF) || (ctx->hwsurfaces_in_queue >= ctx->hwsurfaces_in_queue_max)) {
757  block_and_wait = 1;
758  av_usleep(1000); // wait and poll again
759  }
760  } while (block_and_wait);
761 
762  if (res_query == AMF_EOF) {
763  ret = AVERROR_EOF;
764  } else if (data == NULL) {
765  ret = AVERROR(EAGAIN);
766  } else {
767  ret = 0;
768  }
769  return ret;
770 }
771 
773 #if CONFIG_D3D11VA
774  HW_CONFIG_ENCODER_FRAMES(D3D11, D3D11VA),
775  HW_CONFIG_ENCODER_DEVICE(NONE, D3D11VA),
776 #endif
777 #if CONFIG_DXVA2
778  HW_CONFIG_ENCODER_FRAMES(DXVA2_VLD, DXVA2),
780 #endif
781  NULL,
782 };
AVHWDeviceContext::hwctx
void * hwctx
The format-specific data, allocated and freed by libavutil along with this context.
Definition: hwcontext.h:92
AV_LOG_WARNING
#define AV_LOG_WARNING
Something somehow does not look correct.
Definition: log.h:186
AVPixelFormat
AVPixelFormat
Pixel format.
Definition: pixfmt.h:64
name
it s the only field you need to keep assuming you have a context There is some magic you don t need to care about around this just let it vf default minimum maximum flags name is the option name
Definition: writing_filters.txt:88
AVERROR
Filter the word “frame” indicates either a video frame or a group of audio as stored in an AVFrame structure Format for each input and each output the list of supported formats For video that means pixel format For audio that means channel sample they are references to shared objects When the negotiation mechanism computes the intersection of the formats supported at each end of a all references to both lists are replaced with a reference to the intersection And when a single format is eventually chosen for a link amongst the remaining all references to the list are updated That means that if a filter requires that its input and output have the same format amongst a supported all it has to do is use a reference to the same list of formats query_formats can leave some formats unset and return AVERROR(EAGAIN) to cause the negotiation mechanism toagain later. That can be used by filters with complex requirements to use the format negotiated on one link to set the formats supported on another. Frame references ownership and permissions
AMFTraceWriter_Write
static void AMF_CDECL_CALL AMFTraceWriter_Write(AMFTraceWriter *pThis, const wchar_t *scope, const wchar_t *message)
Definition: amfenc.c:93
FFMPEG_AMF_WRITER_ID
#define FFMPEG_AMF_WRITER_ID
Definition: amfenc.c:50
message
Definition: api-threadmessage-test.c:46
NONE
@ NONE
Definition: af_afade.c:56
AVERROR_EOF
#define AVERROR_EOF
End of file.
Definition: error.h:57
AVBufferRef::data
uint8_t * data
The data buffer.
Definition: buffer.h:90
av_unused
#define av_unused
Definition: attributes.h:131
av_frame_free
void av_frame_free(AVFrame **frame)
Free the frame and any dynamically allocated objects in it, e.g.
Definition: frame.c:116
AVFrame
This structure describes decoded (raw) audio or video data.
Definition: frame.h:325
pixdesc.h
internal.h
AVPacket::data
uint8_t * data
Definition: packet.h:374
encode.h
data
const char data[16]
Definition: mxf.c:146
AVDXVA2DeviceContext::devmgr
IDirect3DDeviceManager9 * devmgr
Definition: hwcontext_dxva2.h:40
AV_LOG_VERBOSE
#define AV_LOG_VERBOSE
Detailed information.
Definition: log.h:196
amf_set_property_buffer
static AMF_RESULT amf_set_property_buffer(AMFSurface *object, const wchar_t *name, AMFBuffer *val)
Definition: amfenc.c:508
av_buffer_ref
AVBufferRef * av_buffer_ref(const AVBufferRef *buf)
Create a new reference to an AVBuffer.
Definition: buffer.c:103
AMF_RETURN_IF_FALSE
#define AMF_RETURN_IF_FALSE(avctx, exp, ret_value,...)
Error handling helper.
Definition: amfenc.h:145
amf_copy_surface
static int amf_copy_surface(AVCodecContext *avctx, const AVFrame *frame, AMFSurface *surface)
Definition: amfenc.c:413
AVERROR_UNKNOWN
#define AVERROR_UNKNOWN
Unknown error, typically from an external library.
Definition: error.h:73
AMFTraceWriter_Flush
static void AMF_CDECL_CALL AMFTraceWriter_Flush(AMFTraceWriter *pThis)
Definition: amfenc.c:100
AV_PKT_FLAG_KEY
#define AV_PKT_FLAG_KEY
The packet contains a keyframe.
Definition: packet.h:429
FormatMap::amf_format
enum AMF_SURFACE_FORMAT amf_format
Definition: amfenc.c:68
planes
static const struct @344 planes[]
AVCodecContext::codec
const struct AVCodec * codec
Definition: avcodec.h:407
av_fifo_write
int av_fifo_write(AVFifo *f, const void *buf, size_t nb_elems)
Write data into a FIFO.
Definition: fifo.c:188
ff_amf_encode_close
int av_cold ff_amf_encode_close(AVCodecContext *avctx)
Common encoder termination function.
Definition: amfenc.c:372
AV_HWDEVICE_TYPE_D3D11VA
@ AV_HWDEVICE_TYPE_D3D11VA
Definition: hwcontext.h:35
ff_amf_encode_init
int ff_amf_encode_init(AVCodecContext *avctx)
Common encoder initization function.
Definition: amfenc.c:493
val
static double val(void *priv, double ch)
Definition: aeval.c:77
pts
static int64_t pts
Definition: transcode_aac.c:654
AVHWDeviceContext
This struct aggregates all the (hardware/vendor-specific) "high-level" state, i.e.
Definition: hwcontext.h:61
av_frame_alloc
AVFrame * av_frame_alloc(void)
Allocate an AVFrame and set its fields to default values.
Definition: frame.c:104
avassert.h
pkt
AVPacket * pkt
Definition: movenc.c:59
AV_LOG_ERROR
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
Definition: log.h:180
FF_ARRAY_ELEMS
#define FF_ARRAY_ELEMS(a)
Definition: sinewin_tablegen.c:29
av_cold
#define av_cold
Definition: attributes.h:90
av_fifo_read
int av_fifo_read(AVFifo *f, void *buf, size_t nb_elems)
Read data from a FIFO.
Definition: fifo.c:240
AV_PIX_FMT_DXVA2_VLD
@ AV_PIX_FMT_DXVA2_VLD
HW decoding through DXVA2, Picture.data[3] contains a LPDIRECT3DSURFACE9 pointer.
Definition: pixfmt.h:127
AVD3D11VADeviceContext::device
ID3D11Device * device
Device used for texture creation and access.
Definition: hwcontext_d3d11va.h:56
amf_av_to_amf_format
static enum AMF_SURFACE_FORMAT amf_av_to_amf_format(enum AVPixelFormat fmt)
Definition: amfenc.c:82
av_assert0
#define av_assert0(cond)
assert() equivalent, that is always enabled.
Definition: avassert.h:37
amf_init_encoder
static int amf_init_encoder(AVCodecContext *avctx)
Definition: amfenc.c:338
AV_LOG_DEBUG
#define AV_LOG_DEBUG
Stuff which is only useful for libav* developers.
Definition: log.h:201
ctx
AVFormatContext * ctx
Definition: movenc.c:48
av_frame_clone
AVFrame * av_frame_clone(const AVFrame *src)
Create a new frame that references the same data as src.
Definition: frame.c:474
pix_fmt
static enum AVPixelFormat pix_fmt
Definition: demuxing_decoding.c:41
av_hwdevice_get_type_name
const char * av_hwdevice_get_type_name(enum AVHWDeviceType type)
Get the string name of an AVHWDeviceType.
Definition: hwcontext.c:93
codec_id
enum AVCodecID codec_id
Definition: vaapi_decode.c:388
AV_PIX_FMT_YUV420P
@ AV_PIX_FMT_YUV420P
planar YUV 4:2:0, 12bpp, (1 Cr & Cb sample per 2x2 Y samples)
Definition: pixfmt.h:66
av_usleep
int av_usleep(unsigned usec)
Sleep for a period of time.
Definition: time.c:84
AV_CODEC_ID_H264
@ AV_CODEC_ID_H264
Definition: codec_id.h:79
AmfTraceWriter::avctx
AVCodecContext * avctx
Definition: amfenc.h:40
if
if(ret)
Definition: filter_design.txt:179
context
it s the only field you need to keep assuming you have a context There is some magic you don t need to care about around this just let it vf default minimum maximum flags name is the option keep it simple and lowercase description are in without and describe what they for example set the foo of the bar offset is the offset of the field in your context
Definition: writing_filters.txt:91
tracer_vtbl
static AMFTraceWriterVtbl tracer_vtbl
Definition: amfenc.c:104
NULL
#define NULL
Definition: coverity.c:32
AVHWFramesContext::sw_format
enum AVPixelFormat sw_format
The pixel format identifying the actual data layout of the hardware frames.
Definition: hwcontext.h:222
av_buffer_unref
void av_buffer_unref(AVBufferRef **buf)
Free a given reference and automatically free the buffer if there are no more references to it.
Definition: buffer.c:139
AV_HWDEVICE_TYPE_DXVA2
@ AV_HWDEVICE_TYPE_DXVA2
Definition: hwcontext.h:32
AV_PIX_FMT_YUYV422
@ AV_PIX_FMT_YUYV422
packed YUV 4:2:2, 16bpp, Y0 Cb Y1 Cr
Definition: pixfmt.h:67
ff_amf_receive_packet
int ff_amf_receive_packet(AVCodecContext *avctx, AVPacket *avpkt)
Ecoding one frame - common function for all AMF encoders.
Definition: amfenc.c:578
av_fifo_can_read
size_t av_fifo_can_read(const AVFifo *f)
Definition: fifo.c:87
amf_copy_buffer
static int amf_copy_buffer(AVCodecContext *avctx, AVPacket *pkt, AMFBuffer *buffer)
Definition: amfenc.c:437
AV_PIX_FMT_BGR0
@ AV_PIX_FMT_BGR0
packed BGR 8:8:8, 32bpp, BGRXBGRX... X=unused/undefined
Definition: pixfmt.h:258
time.h
PTS_PROP
#define PTS_PROP
Definition: amfenc.c:52
AV_PIX_FMT_GRAY8
@ AV_PIX_FMT_GRAY8
Y , 8bpp.
Definition: pixfmt.h:74
FormatMap::av_format
enum AVPixelFormat av_format
Definition: amfenc.c:67
index
int index
Definition: gxfenc.c:89
AmfTraceWriter
AMF trace writer callback class Used to capture all AMF logging.
Definition: amfenc.h:38
hwcontext_dxva2.h
HW_CONFIG_ENCODER_DEVICE
#define HW_CONFIG_ENCODER_DEVICE(format, device_type_)
Definition: hwconfig.h:94
ff_amf_pix_fmts
enum AVPixelFormat ff_amf_pix_fmts[]
Supported formats.
Definition: amfenc.c:54
size
int size
Definition: twinvq_data.h:10344
AV_NOPTS_VALUE
#define AV_NOPTS_VALUE
Undefined timestamp value.
Definition: avutil.h:248
AVCodecHWConfigInternal
Definition: hwconfig.h:29
AVPacket::dts
int64_t dts
Decompression timestamp in AVStream->time_base units; the time at which the packet is decompressed.
Definition: packet.h:373
amf_create_buffer_with_frame_ref
static AMFBuffer * amf_create_buffer_with_frame_ref(const AVFrame *frame, AMFContext *context)
Definition: amfenc.c:551
AVERROR_EXTERNAL
#define AVERROR_EXTERNAL
Generic error in an external library.
Definition: error.h:59
AVPacket::flags
int flags
A combination of AV_PKT_FLAG values.
Definition: packet.h:380
AV_PIX_FMT_RGB0
@ AV_PIX_FMT_RGB0
packed RGB 8:8:8, 32bpp, RGBXRGBX... X=unused/undefined
Definition: pixfmt.h:256
AV_PIX_FMT_D3D11
@ AV_PIX_FMT_D3D11
Hardware surfaces for Direct3D11.
Definition: pixfmt.h:333
AVCodec::id
enum AVCodecID id
Definition: codec.h:218
av_fifo_peek
int av_fifo_peek(AVFifo *f, void *buf, size_t nb_elems, size_t offset)
Read data from a FIFO without modifying FIFO state.
Definition: fifo.c:255
HW_CONFIG_ENCODER_FRAMES
#define HW_CONFIG_ENCODER_FRAMES(format, device_type_)
Definition: hwconfig.h:97
i
#define i(width, name, range_min, range_max)
Definition: cbs_h2645.c:269
AVPacket::pts
int64_t pts
Presentation timestamp in AVStream->time_base units; the time at which the decompressed packet will b...
Definition: packet.h:367
AVDXVA2DeviceContext
This struct is allocated as AVHWDeviceContext.hwctx.
Definition: hwcontext_dxva2.h:39
ff_amfenc_hw_configs
const AVCodecHWConfigInternal *const ff_amfenc_hw_configs[]
Definition: amfenc.c:772
amf_load_library
static int amf_load_library(AVCodecContext *avctx)
Definition: amfenc.c:110
AVD3D11VADeviceContext
This struct is allocated as AVHWDeviceContext.hwctx.
Definition: hwcontext_d3d11va.h:45
AV_CODEC_ID_HEVC
@ AV_CODEC_ID_HEVC
Definition: codec_id.h:226
av_frame_unref
void av_frame_unref(AVFrame *frame)
Unreference all the buffers referenced by frame and reset the frame fields.
Definition: frame.c:487
AVCodecContext::hw_device_ctx
AVBufferRef * hw_device_ctx
A reference to the AVHWDeviceContext describing the device which will be used by a hardware encoder/d...
Definition: avcodec.h:1933
AVCodecContext::height
int height
Definition: avcodec.h:571
AVCodecContext::pix_fmt
enum AVPixelFormat pix_fmt
Pixel format, see AV_PIX_FMT_xxx.
Definition: avcodec.h:608
AVCodecContext::hw_frames_ctx
AVBufferRef * hw_frames_ctx
A reference to the AVHWFramesContext describing the input (for encoding) or output (decoding) frames.
Definition: avcodec.h:1883
AVHWFramesContext
This struct describes a set or pool of "hardware" frames (i.e.
Definition: hwcontext.h:124
ret
ret
Definition: filter_design.txt:187
AVHWDeviceContext::type
enum AVHWDeviceType type
This field identifies the underlying API used for hardware access.
Definition: hwcontext.h:79
AV_PIX_FMT_NV12
@ AV_PIX_FMT_NV12
planar YUV 4:2:0, 12bpp, 1 plane for Y and 1 plane for the UV components, which are interleaved (firs...
Definition: pixfmt.h:89
frame
these buffered frames must be flushed immediately if a new input produces new the filter must not call request_frame to get more It must just process the frame or queue it The task of requesting more frames is left to the filter s request_frame method or the application If a filter has several the filter must be ready for frames arriving randomly on any input any filter with several inputs will most likely require some kind of queuing mechanism It is perfectly acceptable to have a limited queue and to drop frames when the inputs are too unbalanced request_frame For filters that do not use the this method is called when a frame is wanted on an output For a it should directly call filter_frame on the corresponding output For a if there are queued frames already one of these frames should be pushed If the filter should request a frame on one of its repeatedly until at least one frame has been pushed Return or at least make progress towards producing a frame
Definition: filter_design.txt:264
AVHWFramesContext::device_ctx
AVHWDeviceContext * device_ctx
The parent AVHWDeviceContext.
Definition: hwcontext.h:149
FormatMap
Definition: amfenc.c:66
av_fifo_alloc2
AVFifo * av_fifo_alloc2(size_t nb_elems, size_t elem_size, unsigned int flags)
Allocate and initialize an AVFifo with a given element size.
Definition: fifo.c:47
AVFormatContext::debug
int debug
Flags to enable debugging.
Definition: avformat.h:1488
AVCodecContext
main external API structure.
Definition: avcodec.h:398
av_image_copy
void av_image_copy(uint8_t *dst_data[4], int dst_linesizes[4], const uint8_t *src_data[4], const int src_linesizes[4], enum AVPixelFormat pix_fmt, int width, int height)
Copy image in src_data to dst_data.
Definition: imgutils.c:422
buffer
the frame and frame reference mechanism is intended to as much as expensive copies of that data while still allowing the filters to produce correct results The data is stored in buffers represented by AVFrame structures Several references can point to the same frame buffer
Definition: filter_design.txt:49
ff_get_encode_buffer
int ff_get_encode_buffer(AVCodecContext *avctx, AVPacket *avpkt, int64_t size, int flags)
Get a buffer for a packet.
Definition: encode.c:79
AV_PIX_FMT_NONE
@ AV_PIX_FMT_NONE
Definition: pixfmt.h:65
amf_get_property_buffer
static AMF_RESULT amf_get_property_buffer(AMFData *object, const wchar_t *name, AMFBuffer **val)
Definition: amfenc.c:530
L
#define L(x)
Definition: vpx_arith.h:36
amfenc.h
AVHWFramesContext::initial_pool_size
int initial_pool_size
Initial size of the frame pool.
Definition: hwcontext.h:199
AVERROR_ENCODER_NOT_FOUND
#define AVERROR_ENCODER_NOT_FOUND
Encoder not found.
Definition: error.h:56
mem.h
AVCodecContext::max_b_frames
int max_b_frames
maximum number of B-frames between non-B-frames Note: The output will be delayed by max_b_frames+1 re...
Definition: avcodec.h:670
ff_encode_get_frame
int ff_encode_get_frame(AVCodecContext *avctx, AVFrame *frame)
Called by encoders to get the next frame for encoding.
Definition: encode.c:178
format_map
static const FormatMap format_map[]
Definition: amfenc.c:71
AVPacket
This structure stores compressed data.
Definition: packet.h:351
AVCodecContext::priv_data
void * priv_data
Definition: avcodec.h:425
AVCodecContext::width
int width
picture width / height.
Definition: avcodec.h:571
imgutils.h
hwcontext.h
av_log
#define av_log(a,...)
Definition: tableprint_vlc.h:27
AmfContext
AMF encoder context.
Definition: amfenc.h:47
av_fifo_freep2
void av_fifo_freep2(AVFifo **f)
Free an AVFifo and reset pointer to NULL.
Definition: fifo.c:286
amf_release_buffer_with_frame_ref
static void amf_release_buffer_with_frame_ref(AMFBuffer *frame_ref_storage_buffer)
Definition: amfenc.c:570
hwcontext_d3d11va.h
AV_FIFO_FLAG_AUTO_GROW
#define AV_FIFO_FLAG_AUTO_GROW
Automatically resize the FIFO on writes, so that the data fits.
Definition: fifo.h:67
w32dlfcn.h
av_get_pix_fmt_name
const char * av_get_pix_fmt_name(enum AVPixelFormat pix_fmt)
Return the short name for a pixel format, NULL in case pix_fmt is unknown.
Definition: pixdesc.c:2778
amf_init_context
static int amf_init_context(AVCodecContext *avctx)
Definition: amfenc.c:216