FFmpeg  4.3.8
decklink_common.cpp
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1 /*
2  * Blackmagic DeckLink output
3  * Copyright (c) 2013-2014 Ramiro Polla, Luca Barbato, Deti Fliegl
4  *
5  * This file is part of FFmpeg.
6  *
7  * FFmpeg is free software; you can redistribute it and/or
8  * modify it under the terms of the GNU Lesser General Public
9  * License as published by the Free Software Foundation; either
10  * version 2.1 of the License, or (at your option) any later version.
11  *
12  * FFmpeg is distributed in the hope that it will be useful,
13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15  * Lesser General Public License for more details.
16  *
17  * You should have received a copy of the GNU Lesser General Public
18  * License along with FFmpeg; if not, write to the Free Software
19  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
20  */
21 
22 /* Include internal.h first to avoid conflict between winsock.h (used by
23  * DeckLink headers) and winsock2.h (used by libavformat) in MSVC++ builds */
24 extern "C" {
25 #include "libavformat/internal.h"
26 }
27 
28 #include <DeckLinkAPI.h>
29 #ifdef _WIN32
30 #include <DeckLinkAPI_i.c>
31 #else
32 /* The file provided by the SDK is known to be missing prototypes, which doesn't
33  cause issues with GCC since the warning doesn't apply to C++ files. However
34  Clang does complain (and warnings are treated as errors), so suppress the
35  warning just for this one file */
36 #ifdef __clang__
37 #pragma clang diagnostic push
38 #pragma clang diagnostic ignored "-Wmissing-prototypes"
39 #endif
40 #include <DeckLinkAPIDispatch.cpp>
41 #ifdef __clang__
42 #pragma clang diagnostic pop
43 #endif
44 #endif
45 
46 extern "C" {
47 #include "libavformat/avformat.h"
48 #include "libavutil/imgutils.h"
49 #include "libavutil/intreadwrite.h"
50 #include "libavutil/bswap.h"
51 #include "avdevice.h"
52 }
53 
54 #include "decklink_common.h"
55 
56 static IDeckLinkIterator *decklink_create_iterator(AVFormatContext *avctx)
57 {
58  IDeckLinkIterator *iter;
59 
60 #ifdef _WIN32
61  if (CoInitialize(NULL) < 0) {
62  av_log(avctx, AV_LOG_ERROR, "COM initialization failed.\n");
63  return NULL;
64  }
65 
66  if (CoCreateInstance(CLSID_CDeckLinkIterator, NULL, CLSCTX_ALL,
67  IID_IDeckLinkIterator, (void**) &iter) != S_OK) {
68  iter = NULL;
69  }
70 #else
71  iter = CreateDeckLinkIteratorInstance();
72 #endif
73  if (!iter)
74  av_log(avctx, AV_LOG_ERROR, "Could not create DeckLink iterator. "
75  "Make sure you have DeckLink drivers " BLACKMAGIC_DECKLINK_API_VERSION_STRING " or newer installed.\n");
76 
77  return iter;
78 }
79 
80 static int decklink_get_attr_string(IDeckLink *dl, BMDDeckLinkAttributeID cfg_id, const char **s)
81 {
83  HRESULT hr;
85  *s = NULL;
86  if (dl->QueryInterface(IID_IDeckLinkProfileAttributes, (void **)&attr) != S_OK)
87  return AVERROR_EXTERNAL;
88  hr = attr->GetString(cfg_id, &tmp);
89  attr->Release();
90  if (hr == S_OK) {
91  *s = DECKLINK_STRDUP(tmp);
92  DECKLINK_FREE(tmp);
93  if (!*s)
94  return AVERROR(ENOMEM);
95  } else if (hr == E_FAIL) {
96  return AVERROR_EXTERNAL;
97  }
98  return 0;
99 }
100 
101 static int decklink_select_input(AVFormatContext *avctx, BMDDeckLinkConfigurationID cfg_id)
102 {
103  struct decklink_cctx *cctx = (struct decklink_cctx *)avctx->priv_data;
104  struct decklink_ctx *ctx = (struct decklink_ctx *)cctx->ctx;
105  BMDDeckLinkAttributeID attr_id = (cfg_id == bmdDeckLinkConfigAudioInputConnection) ? BMDDeckLinkAudioInputConnections : BMDDeckLinkVideoInputConnections;
106  int64_t bmd_input = (cfg_id == bmdDeckLinkConfigAudioInputConnection) ? (int64_t)ctx->audio_input : (int64_t)ctx->video_input;
107  const char *type_name = (cfg_id == bmdDeckLinkConfigAudioInputConnection) ? "audio" : "video";
108  int64_t supported_connections = 0;
109  HRESULT res;
110 
111  if (bmd_input) {
112  res = ctx->attr->GetInt(attr_id, &supported_connections);
113  if (res != S_OK) {
114  av_log(avctx, AV_LOG_ERROR, "Failed to query supported %s inputs.\n", type_name);
115  return AVERROR_EXTERNAL;
116  }
117  if ((supported_connections & bmd_input) != bmd_input) {
118  av_log(avctx, AV_LOG_ERROR, "Device does not support selected %s input.\n", type_name);
119  return AVERROR(ENOSYS);
120  }
121  res = ctx->cfg->SetInt(cfg_id, bmd_input);
122  if (res != S_OK) {
123  av_log(avctx, AV_LOG_ERROR, "Failed to select %s input.\n", type_name);
124  return AVERROR_EXTERNAL;
125  }
126  }
127  return 0;
128 }
129 
130 static DECKLINK_BOOL field_order_eq(enum AVFieldOrder field_order, BMDFieldDominance bmd_field_order)
131 {
132  if (field_order == AV_FIELD_UNKNOWN)
133  return true;
134  if ((field_order == AV_FIELD_TT || field_order == AV_FIELD_TB) && bmd_field_order == bmdUpperFieldFirst)
135  return true;
136  if ((field_order == AV_FIELD_BB || field_order == AV_FIELD_BT) && bmd_field_order == bmdLowerFieldFirst)
137  return true;
138  if (field_order == AV_FIELD_PROGRESSIVE && (bmd_field_order == bmdProgressiveFrame || bmd_field_order == bmdProgressiveSegmentedFrame))
139  return true;
140  return false;
141 }
142 
144  decklink_direction_t direction) {
145  struct decklink_cctx *cctx = (struct decklink_cctx *)avctx->priv_data;
146  struct decklink_ctx *ctx = (struct decklink_ctx *)cctx->ctx;
147  HRESULT res;
148 
149  if (ctx->duplex_mode) {
150  DECKLINK_BOOL duplex_supported = false;
151 
152 #if BLACKMAGIC_DECKLINK_API_VERSION >= 0x0b000000
153  IDeckLinkProfileManager *manager = NULL;
154  if (ctx->dl->QueryInterface(IID_IDeckLinkProfileManager, (void **)&manager) == S_OK)
155  duplex_supported = true;
156 #else
157  if (ctx->attr->GetFlag(BMDDeckLinkSupportsDuplexModeConfiguration, &duplex_supported) != S_OK)
158  duplex_supported = false;
159 #endif
160 
161  if (duplex_supported) {
162 #if BLACKMAGIC_DECKLINK_API_VERSION >= 0x0b000000
163  IDeckLinkProfile *profile = NULL;
164  BMDProfileID bmd_profile_id = ctx->duplex_mode == 2 ? bmdProfileOneSubDeviceFullDuplex : bmdProfileTwoSubDevicesHalfDuplex;
165  res = manager->GetProfile(bmd_profile_id, &profile);
166  if (res == S_OK) {
167  res = profile->SetActive();
168  profile->Release();
169  }
170  manager->Release();
171 #else
172  res = ctx->cfg->SetInt(bmdDeckLinkConfigDuplexMode, ctx->duplex_mode == 2 ? bmdDuplexModeFull : bmdDuplexModeHalf);
173 #endif
174  if (res != S_OK)
175  av_log(avctx, AV_LOG_WARNING, "Setting duplex mode failed.\n");
176  else
177  av_log(avctx, AV_LOG_VERBOSE, "Successfully set duplex mode to %s duplex.\n", ctx->duplex_mode == 2 ? "full" : "half");
178  } else {
179  av_log(avctx, AV_LOG_WARNING, "Unable to set duplex mode, because it is not supported.\n");
180  }
181  }
182  if (direction == DIRECTION_IN) {
183  int ret;
184  ret = decklink_select_input(avctx, bmdDeckLinkConfigAudioInputConnection);
185  if (ret < 0)
186  return ret;
187  ret = decklink_select_input(avctx, bmdDeckLinkConfigVideoInputConnection);
188  if (ret < 0)
189  return ret;
190  }
191  if (direction == DIRECTION_OUT && cctx->timing_offset != INT_MIN) {
192  res = ctx->cfg->SetInt(bmdDeckLinkConfigReferenceInputTimingOffset, cctx->timing_offset);
193  if (res != S_OK)
194  av_log(avctx, AV_LOG_WARNING, "Setting timing offset failed.\n");
195  }
196  return 0;
197 }
198 
200  int width, int height,
201  int tb_num, int tb_den,
202  enum AVFieldOrder field_order,
203  decklink_direction_t direction)
204 {
205  struct decklink_cctx *cctx = (struct decklink_cctx *)avctx->priv_data;
206  struct decklink_ctx *ctx = (struct decklink_ctx *)cctx->ctx;
207 #if BLACKMAGIC_DECKLINK_API_VERSION >= 0x0b000000
208  DECKLINK_BOOL support;
209 #else
210  BMDDisplayModeSupport support;
211 #endif
212  IDeckLinkDisplayModeIterator *itermode;
213  IDeckLinkDisplayMode *mode;
214  int i = 1;
215  HRESULT res;
216 
217  av_log(avctx, AV_LOG_DEBUG, "Trying to find mode for frame size %dx%d, frame timing %d/%d, field order %d, direction %d, format code %s\n",
218  width, height, tb_num, tb_den, field_order, direction, cctx->format_code ? cctx->format_code : "(unset)");
219 
220  if (direction == DIRECTION_IN) {
221  res = ctx->dli->GetDisplayModeIterator (&itermode);
222  } else {
223  res = ctx->dlo->GetDisplayModeIterator (&itermode);
224  }
225 
226  if (res!= S_OK) {
227  av_log(avctx, AV_LOG_ERROR, "Could not get Display Mode Iterator\n");
228  return AVERROR(EIO);
229  }
230 
231  char format_buf[] = " ";
232  if (cctx->format_code)
233  memcpy(format_buf, cctx->format_code, FFMIN(strlen(cctx->format_code), sizeof(format_buf)));
234  BMDDisplayMode target_mode = (BMDDisplayMode)AV_RB32(format_buf);
235  AVRational target_tb = av_make_q(tb_num, tb_den);
236  ctx->bmd_mode = bmdModeUnknown;
237  while ((ctx->bmd_mode == bmdModeUnknown) && itermode->Next(&mode) == S_OK) {
238  BMDTimeValue bmd_tb_num, bmd_tb_den;
239  int bmd_width = mode->GetWidth();
240  int bmd_height = mode->GetHeight();
241  BMDDisplayMode bmd_mode = mode->GetDisplayMode();
242  BMDFieldDominance bmd_field_dominance = mode->GetFieldDominance();
243 
244  mode->GetFrameRate(&bmd_tb_num, &bmd_tb_den);
245  AVRational mode_tb = av_make_q(bmd_tb_num, bmd_tb_den);
246 
247  if ((bmd_width == width &&
248  bmd_height == height &&
249  !av_cmp_q(mode_tb, target_tb) &&
250  field_order_eq(field_order, bmd_field_dominance))
251  || target_mode == bmd_mode) {
252  ctx->bmd_mode = bmd_mode;
253  ctx->bmd_width = bmd_width;
254  ctx->bmd_height = bmd_height;
255  ctx->bmd_tb_den = bmd_tb_den;
256  ctx->bmd_tb_num = bmd_tb_num;
257  ctx->bmd_field_dominance = bmd_field_dominance;
258  av_log(avctx, AV_LOG_INFO, "Found Decklink mode %d x %d with rate %.2f%s\n",
259  bmd_width, bmd_height, 1/av_q2d(mode_tb),
260  (ctx->bmd_field_dominance==bmdLowerFieldFirst || ctx->bmd_field_dominance==bmdUpperFieldFirst)?"(i)":"");
261  }
262 
263  mode->Release();
264  i++;
265  }
266 
267  itermode->Release();
268 
269  if (ctx->bmd_mode == bmdModeUnknown)
270  return -1;
271 
272 #if BLACKMAGIC_DECKLINK_API_VERSION >= 0x0b050000
273  if (direction == DIRECTION_IN) {
274  BMDDisplayMode actualMode = ctx->bmd_mode;
275  if (ctx->dli->DoesSupportVideoMode(ctx->video_input, ctx->bmd_mode, (BMDPixelFormat) cctx->raw_format,
276  bmdNoVideoInputConversion, bmdSupportedVideoModeDefault,
277  &actualMode, &support) != S_OK || !support || ctx->bmd_mode != actualMode)
278  return -1;
279  } else {
280  BMDDisplayMode actualMode = ctx->bmd_mode;
281  if (ctx->dlo->DoesSupportVideoMode(bmdVideoConnectionUnspecified, ctx->bmd_mode, ctx->raw_format,
282  bmdNoVideoOutputConversion, bmdSupportedVideoModeDefault,
283  &actualMode, &support) != S_OK || !support || ctx->bmd_mode != actualMode)
284  return -1;
285  }
286  return 0;
287 #elif BLACKMAGIC_DECKLINK_API_VERSION >= 0x0b000000
288  if (direction == DIRECTION_IN) {
289  if (ctx->dli->DoesSupportVideoMode(ctx->video_input, ctx->bmd_mode, (BMDPixelFormat) cctx->raw_format,
290  bmdSupportedVideoModeDefault,
291  &support) != S_OK)
292  return -1;
293  } else {
294  BMDDisplayMode actualMode = ctx->bmd_mode;
295  if (ctx->dlo->DoesSupportVideoMode(bmdVideoConnectionUnspecified, ctx->bmd_mode, ctx->raw_format,
296  bmdSupportedVideoModeDefault,
297  &actualMode, &support) != S_OK || !support || ctx->bmd_mode != actualMode) {
298  return -1;
299  }
300 
301  }
302  if (support)
303  return 0;
304 #else
305  if (direction == DIRECTION_IN) {
306  if (ctx->dli->DoesSupportVideoMode(ctx->bmd_mode, (BMDPixelFormat) cctx->raw_format,
307  bmdVideoOutputFlagDefault,
308  &support, NULL) != S_OK)
309  return -1;
310  } else {
311  if (!ctx->supports_vanc || ctx->dlo->DoesSupportVideoMode(ctx->bmd_mode, ctx->raw_format,
312  bmdVideoOutputVANC,
313  &support, NULL) != S_OK || support != bmdDisplayModeSupported) {
314  /* Try without VANC enabled */
315  if (ctx->dlo->DoesSupportVideoMode(ctx->bmd_mode, ctx->raw_format,
316  bmdVideoOutputFlagDefault,
317  &support, NULL) != S_OK) {
318  return -1;
319  }
320  ctx->supports_vanc = 0;
321  }
322 
323  }
324  if (support == bmdDisplayModeSupported)
325  return 0;
326 #endif
327 
328  return -1;
329 }
330 
332  return ff_decklink_set_format(avctx, 0, 0, 0, 0, AV_FIELD_UNKNOWN, direction);
333 }
334 
336  struct AVDeviceInfoList *device_list,
337  int show_inputs, int show_outputs)
338 {
339  IDeckLink *dl = NULL;
340  IDeckLinkIterator *iter = decklink_create_iterator(avctx);
341  int ret = 0;
342 
343  if (!iter)
344  return AVERROR(EIO);
345 
346  while (ret == 0 && iter->Next(&dl) == S_OK) {
347  IDeckLinkOutput *output_config;
348  IDeckLinkInput *input_config;
349  const char *display_name = NULL;
350  const char *unique_name = NULL;
351  AVDeviceInfo *new_device = NULL;
352  int add = 0;
353 
354  ret = decklink_get_attr_string(dl, BMDDeckLinkDisplayName, &display_name);
355  if (ret < 0)
356  goto next;
357  ret = decklink_get_attr_string(dl, BMDDeckLinkDeviceHandle, &unique_name);
358  if (ret < 0)
359  goto next;
360 
361  if (show_outputs) {
362  if (dl->QueryInterface(IID_IDeckLinkOutput, (void **)&output_config) == S_OK) {
363  output_config->Release();
364  add = 1;
365  }
366  }
367 
368  if (show_inputs) {
369  if (dl->QueryInterface(IID_IDeckLinkInput, (void **)&input_config) == S_OK) {
370  input_config->Release();
371  add = 1;
372  }
373  }
374 
375  if (add == 1) {
376  new_device = (AVDeviceInfo *) av_mallocz(sizeof(AVDeviceInfo));
377  if (!new_device) {
378  ret = AVERROR(ENOMEM);
379  goto next;
380  }
381 
382  new_device->device_name = av_strdup(unique_name ? unique_name : display_name);
383  new_device->device_description = av_strdup(display_name);
384 
385  if (!new_device->device_name ||
386  !new_device->device_description ||
387  av_dynarray_add_nofree(&device_list->devices, &device_list->nb_devices, new_device) < 0) {
388  ret = AVERROR(ENOMEM);
389  av_freep(&new_device->device_name);
390  av_freep(&new_device->device_description);
391  av_freep(&new_device);
392  goto next;
393  }
394  }
395 
396  next:
397  av_freep(&display_name);
398  av_freep(&unique_name);
399  dl->Release();
400  }
401  iter->Release();
402  return ret;
403 }
404 
405 /* This is a wrapper around the ff_decklink_list_devices() which dumps the
406  output to av_log() and exits (for backward compatibility with the
407  "-list_devices" argument). */
409  int show_inputs, int show_outputs)
410 {
411  struct AVDeviceInfoList *device_list = NULL;
412  int ret;
413 
414  device_list = (struct AVDeviceInfoList *) av_mallocz(sizeof(AVDeviceInfoList));
415  if (!device_list)
416  return;
417 
418  ret = ff_decklink_list_devices(avctx, device_list, show_inputs, show_outputs);
419  if (ret == 0) {
420  av_log(avctx, AV_LOG_INFO, "Blackmagic DeckLink %s devices:\n",
421  show_inputs ? "input" : "output");
422  for (int i = 0; i < device_list->nb_devices; i++) {
423  av_log(avctx, AV_LOG_INFO, "\t'%s'\n", device_list->devices[i]->device_description);
424  }
425  }
426  avdevice_free_list_devices(&device_list);
427 }
428 
430 {
431  struct decklink_cctx *cctx = (struct decklink_cctx *)avctx->priv_data;
432  struct decklink_ctx *ctx = (struct decklink_ctx *)cctx->ctx;
433  IDeckLinkDisplayModeIterator *itermode;
434  IDeckLinkDisplayMode *mode;
435  uint32_t format_code;
436  HRESULT res;
437 
438  if (direction == DIRECTION_IN) {
439  int ret;
440  ret = decklink_select_input(avctx, bmdDeckLinkConfigAudioInputConnection);
441  if (ret < 0)
442  return ret;
443  ret = decklink_select_input(avctx, bmdDeckLinkConfigVideoInputConnection);
444  if (ret < 0)
445  return ret;
446  res = ctx->dli->GetDisplayModeIterator (&itermode);
447  } else {
448  res = ctx->dlo->GetDisplayModeIterator (&itermode);
449  }
450 
451  if (res!= S_OK) {
452  av_log(avctx, AV_LOG_ERROR, "Could not get Display Mode Iterator\n");
453  return AVERROR(EIO);
454  }
455 
456  av_log(avctx, AV_LOG_INFO, "Supported formats for '%s':\n\tformat_code\tdescription",
457  avctx->url);
458  while (itermode->Next(&mode) == S_OK) {
459  BMDTimeValue tb_num, tb_den;
460  mode->GetFrameRate(&tb_num, &tb_den);
461  format_code = av_bswap32(mode->GetDisplayMode());
462  av_log(avctx, AV_LOG_INFO, "\n\t%.4s\t\t%ldx%ld at %d/%d fps",
463  (char*) &format_code, mode->GetWidth(), mode->GetHeight(),
464  (int) tb_den, (int) tb_num);
465  switch (mode->GetFieldDominance()) {
466  case bmdLowerFieldFirst:
467  av_log(avctx, AV_LOG_INFO, " (interlaced, lower field first)"); break;
468  case bmdUpperFieldFirst:
469  av_log(avctx, AV_LOG_INFO, " (interlaced, upper field first)"); break;
470  }
471  mode->Release();
472  }
473  av_log(avctx, AV_LOG_INFO, "\n");
474 
475  itermode->Release();
476 
477  return 0;
478 }
479 
481 {
482  struct decklink_cctx *cctx = (struct decklink_cctx *)avctx->priv_data;
483  struct decklink_ctx *ctx = (struct decklink_ctx *)cctx->ctx;
484 
485  if (ctx->dli)
486  ctx->dli->Release();
487  if (ctx->dlo)
488  ctx->dlo->Release();
489  if (ctx->attr)
490  ctx->attr->Release();
491  if (ctx->cfg)
492  ctx->cfg->Release();
493  if (ctx->dl)
494  ctx->dl->Release();
495 }
496 
498 {
499  struct decklink_cctx *cctx = (struct decklink_cctx *)avctx->priv_data;
500  struct decklink_ctx *ctx = (struct decklink_ctx *)cctx->ctx;
501  IDeckLink *dl = NULL;
502  IDeckLinkIterator *iter = decklink_create_iterator(avctx);
503  if (!iter)
504  return AVERROR_EXTERNAL;
505 
506  while (iter->Next(&dl) == S_OK) {
507  const char *display_name = NULL;
508  const char *unique_name = NULL;
509  decklink_get_attr_string(dl, BMDDeckLinkDisplayName, &display_name);
510  decklink_get_attr_string(dl, BMDDeckLinkDeviceHandle, &unique_name);
511  if (display_name && !strcmp(name, display_name) || unique_name && !strcmp(name, unique_name)) {
512  av_free((void *)unique_name);
513  av_free((void *)display_name);
514  ctx->dl = dl;
515  break;
516  }
517  av_free((void *)display_name);
518  av_free((void *)unique_name);
519  dl->Release();
520  }
521  iter->Release();
522  if (!ctx->dl)
523  return AVERROR(ENXIO);
524 
525  if (ctx->dl->QueryInterface(IID_IDeckLinkConfiguration, (void **)&ctx->cfg) != S_OK) {
526  av_log(avctx, AV_LOG_ERROR, "Could not get configuration interface for '%s'\n", name);
527  ff_decklink_cleanup(avctx);
528  return AVERROR_EXTERNAL;
529  }
530 
531  if (ctx->dl->QueryInterface(IID_IDeckLinkProfileAttributes, (void **)&ctx->attr) != S_OK) {
532  av_log(avctx, AV_LOG_ERROR, "Could not get attributes interface for '%s'\n", name);
533  ff_decklink_cleanup(avctx);
534  return AVERROR_EXTERNAL;
535  }
536 
537  return 0;
538 }
#define NULL
Definition: coverity.c:32
Structure describes basic parameters of the device.
Definition: avdevice.h:452
char * device_description
human friendly name
Definition: avdevice.h:454
misc image utilities
#define AV_LOG_WARNING
Something somehow does not look correct.
Definition: log.h:182
char * device_name
device name, format depends on device
Definition: avdevice.h:453
Format I/O context.
Definition: avformat.h:1351
void avdevice_free_list_devices(AVDeviceInfoList **device_list)
Convenient function to free result of avdevice_list_devices().
Definition: avdevice.c:250
#define AV_RB32
Definition: intreadwrite.h:130
#define height
static double av_q2d(AVRational a)
Convert an AVRational to a double.
Definition: rational.h:104
#define AV_LOG_VERBOSE
Detailed information.
Definition: log.h:192
int av_dynarray_add_nofree(void *tab_ptr, int *nb_ptr, void *elem)
Add an element to a dynamic array.
Definition: mem.c:296
#define av_log(a,...)
Main libavdevice API header.
#define i(width, name, range_min, range_max)
Definition: cbs_h2645.c:269
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
Definition: log.h:176
#define AVERROR(e)
Definition: error.h:43
char * url
input or output URL.
Definition: avformat.h:1447
#define AV_LOG_DEBUG
Stuff which is only useful for libav* developers.
Definition: log.h:197
void * av_mallocz(size_t size)
Allocate a memory block with alignment suitable for all memory accesses (including vectors if availab...
Definition: mem.c:237
AVDeviceInfo ** devices
list of autodetected devices
Definition: avdevice.h:461
const char * name
Definition: qsvenc.c:46
#define FFMIN(a, b)
Definition: common.h:96
#define width
AVFormatContext * ctx
Definition: movenc.c:48
#define s(width, name)
Definition: cbs_vp9.c:257
#define AV_LOG_INFO
Standard information.
Definition: log.h:187
#define av_bswap32
Definition: bswap.h:33
char * av_strdup(const char *s)
Duplicate a string.
Definition: mem.c:253
static AVRational av_make_q(int num, int den)
Create an AVRational.
Definition: rational.h:71
long long int64_t
Definition: coverity.c:34
Rational number (pair of numerator and denominator).
Definition: rational.h:58
byte swapping routines
List of devices.
Definition: avdevice.h:460
mfxU16 profile
Definition: qsvenc.c:45
AVFieldOrder
Definition: codec_par.h:36
static int av_cmp_q(AVRational a, AVRational b)
Compare two rationals.
Definition: rational.h:89
Main libavformat public API header.
int
#define av_free(p)
void * priv_data
Format private data.
Definition: avformat.h:1379
#define av_freep(p)
int nb_devices
number of autodetected devices
Definition: avdevice.h:462
#define AVERROR_EXTERNAL
Generic error in an external library.
Definition: error.h:57
mode
Use these values in ebur128_init (or&#39;ed).
Definition: ebur128.h:83
static uint8_t tmp[11]
Definition: aes_ctr.c:26