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
decklink_create_iterator(AVFormatContext * avctx)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 } else {
77 IDeckLinkAPIInformation *api;
78 int64_t version;
79 #ifdef _WIN32
80 if (CoCreateInstance(CLSID_CDeckLinkAPIInformation, NULL, CLSCTX_ALL,
81 IID_IDeckLinkAPIInformation, (void**) &api) != S_OK) {
82 api = NULL;
83 }
84 #else
85 api = CreateDeckLinkAPIInformationInstance();
86 #endif
87 if (api && api->GetInt(BMDDeckLinkAPIVersion, &version) == S_OK) {
88 if (version < BLACKMAGIC_DECKLINK_API_VERSION)
89 av_log(avctx, AV_LOG_WARNING, "Installed DeckLink drivers are too old and may be incompatible with the SDK this module was built against. "
90 "Make sure you have DeckLink drivers " BLACKMAGIC_DECKLINK_API_VERSION_STRING " or newer installed.\n");
91 } else {
92 av_log(avctx, AV_LOG_ERROR, "Failed to check installed DeckLink API version.\n");
93 }
94 if (api)
95 api->Release();
96 }
97
98 return iter;
99 }
100
decklink_get_attr_string(IDeckLink * dl,BMDDeckLinkAttributeID cfg_id,const char ** s)101 static int decklink_get_attr_string(IDeckLink *dl, BMDDeckLinkAttributeID cfg_id, const char **s)
102 {
103 DECKLINK_STR tmp;
104 HRESULT hr;
105 IDeckLinkProfileAttributes *attr;
106 *s = NULL;
107 if (dl->QueryInterface(IID_IDeckLinkProfileAttributes, (void **)&attr) != S_OK)
108 return AVERROR_EXTERNAL;
109 hr = attr->GetString(cfg_id, &tmp);
110 attr->Release();
111 if (hr == S_OK) {
112 *s = DECKLINK_STRDUP(tmp);
113 DECKLINK_FREE(tmp);
114 if (!*s)
115 return AVERROR(ENOMEM);
116 } else if (hr == E_FAIL) {
117 return AVERROR_EXTERNAL;
118 }
119 return 0;
120 }
121
decklink_select_input(AVFormatContext * avctx,BMDDeckLinkConfigurationID cfg_id)122 static int decklink_select_input(AVFormatContext *avctx, BMDDeckLinkConfigurationID cfg_id)
123 {
124 struct decklink_cctx *cctx = (struct decklink_cctx *)avctx->priv_data;
125 struct decklink_ctx *ctx = (struct decklink_ctx *)cctx->ctx;
126 BMDDeckLinkAttributeID attr_id = (cfg_id == bmdDeckLinkConfigAudioInputConnection) ? BMDDeckLinkAudioInputConnections : BMDDeckLinkVideoInputConnections;
127 int64_t bmd_input = (cfg_id == bmdDeckLinkConfigAudioInputConnection) ? (int64_t)ctx->audio_input : (int64_t)ctx->video_input;
128 const char *type_name = (cfg_id == bmdDeckLinkConfigAudioInputConnection) ? "audio" : "video";
129 int64_t supported_connections = 0;
130 HRESULT res;
131
132 if (bmd_input) {
133 res = ctx->attr->GetInt(attr_id, &supported_connections);
134 if (res != S_OK) {
135 av_log(avctx, AV_LOG_ERROR, "Failed to query supported %s inputs.\n", type_name);
136 return AVERROR_EXTERNAL;
137 }
138 if ((supported_connections & bmd_input) != bmd_input) {
139 av_log(avctx, AV_LOG_ERROR, "Device does not support selected %s input.\n", type_name);
140 return AVERROR(ENOSYS);
141 }
142 res = ctx->cfg->SetInt(cfg_id, bmd_input);
143 if (res != S_OK) {
144 av_log(avctx, AV_LOG_ERROR, "Failed to select %s input.\n", type_name);
145 return AVERROR_EXTERNAL;
146 }
147 }
148 return 0;
149 }
150
field_order_eq(enum AVFieldOrder field_order,BMDFieldDominance bmd_field_order)151 static DECKLINK_BOOL field_order_eq(enum AVFieldOrder field_order, BMDFieldDominance bmd_field_order)
152 {
153 if (field_order == AV_FIELD_UNKNOWN)
154 return true;
155 if ((field_order == AV_FIELD_TT || field_order == AV_FIELD_TB) && bmd_field_order == bmdUpperFieldFirst)
156 return true;
157 if ((field_order == AV_FIELD_BB || field_order == AV_FIELD_BT) && bmd_field_order == bmdLowerFieldFirst)
158 return true;
159 if (field_order == AV_FIELD_PROGRESSIVE && (bmd_field_order == bmdProgressiveFrame || bmd_field_order == bmdProgressiveSegmentedFrame))
160 return true;
161 return false;
162 }
163
ff_decklink_set_configs(AVFormatContext * avctx,decklink_direction_t direction)164 int ff_decklink_set_configs(AVFormatContext *avctx,
165 decklink_direction_t direction) {
166 struct decklink_cctx *cctx = (struct decklink_cctx *)avctx->priv_data;
167 struct decklink_ctx *ctx = (struct decklink_ctx *)cctx->ctx;
168 HRESULT res;
169
170 if (ctx->duplex_mode) {
171 DECKLINK_BOOL duplex_supported = false;
172
173 #if BLACKMAGIC_DECKLINK_API_VERSION >= 0x0b000000
174 IDeckLinkProfileManager *manager = NULL;
175 if (ctx->dl->QueryInterface(IID_IDeckLinkProfileManager, (void **)&manager) == S_OK)
176 duplex_supported = true;
177 #else
178 if (ctx->attr->GetFlag(BMDDeckLinkSupportsDuplexModeConfiguration, &duplex_supported) != S_OK)
179 duplex_supported = false;
180 #endif
181
182 if (duplex_supported) {
183 #if BLACKMAGIC_DECKLINK_API_VERSION >= 0x0b000000
184 IDeckLinkProfile *profile = NULL;
185 BMDProfileID bmd_profile_id;
186
187 if (ctx->duplex_mode < 0 || ctx->duplex_mode >= FF_ARRAY_ELEMS(decklink_profile_id_map))
188 return EINVAL;
189 bmd_profile_id = decklink_profile_id_map[ctx->duplex_mode];
190 res = manager->GetProfile(bmd_profile_id, &profile);
191 if (res == S_OK) {
192 res = profile->SetActive();
193 profile->Release();
194 }
195 manager->Release();
196 #else
197 res = ctx->cfg->SetInt(bmdDeckLinkConfigDuplexMode, ctx->duplex_mode == 2 ? bmdDuplexModeFull : bmdDuplexModeHalf);
198 #endif
199 if (res != S_OK)
200 av_log(avctx, AV_LOG_WARNING, "Setting duplex mode failed.\n");
201 else
202 av_log(avctx, AV_LOG_VERBOSE, "Successfully set duplex mode to %s duplex.\n", ctx->duplex_mode == 2 || ctx->duplex_mode == 4 ? "full" : "half");
203 } else {
204 av_log(avctx, AV_LOG_WARNING, "Unable to set duplex mode, because it is not supported.\n");
205 }
206 }
207 if (direction == DIRECTION_IN) {
208 int ret;
209 ret = decklink_select_input(avctx, bmdDeckLinkConfigAudioInputConnection);
210 if (ret < 0)
211 return ret;
212 ret = decklink_select_input(avctx, bmdDeckLinkConfigVideoInputConnection);
213 if (ret < 0)
214 return ret;
215 }
216 if (direction == DIRECTION_OUT && cctx->timing_offset != INT_MIN) {
217 res = ctx->cfg->SetInt(bmdDeckLinkConfigReferenceInputTimingOffset, cctx->timing_offset);
218 if (res != S_OK)
219 av_log(avctx, AV_LOG_WARNING, "Setting timing offset failed.\n");
220 }
221
222 if (direction == DIRECTION_OUT && ctx->link > 0) {
223 res = ctx->cfg->SetInt(bmdDeckLinkConfigSDIOutputLinkConfiguration, ctx->link);
224 if (res != S_OK)
225 av_log(avctx, AV_LOG_WARNING, "Setting link configuration failed.\n");
226 else
227 av_log(avctx, AV_LOG_VERBOSE, "Successfully set link configuration: 0x%x.\n", ctx->link);
228 if (ctx->link == bmdLinkConfigurationQuadLink && cctx->sqd >= 0) {
229 res = ctx->cfg->SetFlag(bmdDeckLinkConfigQuadLinkSDIVideoOutputSquareDivisionSplit, cctx->sqd);
230 if (res != S_OK)
231 av_log(avctx, AV_LOG_WARNING, "Setting SquareDivisionSplit failed.\n");
232 else
233 av_log(avctx, AV_LOG_VERBOSE, "Successfully set SquareDivisionSplit.\n");
234 }
235 }
236
237 if (direction == DIRECTION_OUT && cctx->level_a >= 0) {
238 DECKLINK_BOOL level_a_supported = false;
239
240 if (ctx->attr->GetFlag(BMDDeckLinkSupportsSMPTELevelAOutput, &level_a_supported) != S_OK)
241 level_a_supported = false;
242
243 if (level_a_supported) {
244 res = ctx->cfg->SetFlag(bmdDeckLinkConfigSMPTELevelAOutput, cctx->level_a);
245 if (res != S_OK)
246 av_log(avctx, AV_LOG_WARNING, "Setting SMPTE levelA failed.\n");
247 else
248 av_log(avctx, AV_LOG_VERBOSE, "Successfully set SMPTE levelA.\n");
249 } else {
250 av_log(avctx, AV_LOG_WARNING, "Unable to set SMPTE levelA mode, because it is not supported.\n");
251 }
252 }
253
254 return 0;
255 }
256
ff_decklink_set_format(AVFormatContext * avctx,int width,int height,int tb_num,int tb_den,enum AVFieldOrder field_order,decklink_direction_t direction)257 int ff_decklink_set_format(AVFormatContext *avctx,
258 int width, int height,
259 int tb_num, int tb_den,
260 enum AVFieldOrder field_order,
261 decklink_direction_t direction)
262 {
263 struct decklink_cctx *cctx = (struct decklink_cctx *)avctx->priv_data;
264 struct decklink_ctx *ctx = (struct decklink_ctx *)cctx->ctx;
265 #if BLACKMAGIC_DECKLINK_API_VERSION >= 0x0b000000
266 DECKLINK_BOOL support;
267 #else
268 BMDDisplayModeSupport support;
269 #endif
270 IDeckLinkDisplayModeIterator *itermode;
271 IDeckLinkDisplayMode *mode;
272 int i = 1;
273 HRESULT res;
274
275 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",
276 width, height, tb_num, tb_den, field_order, direction, cctx->format_code ? cctx->format_code : "(unset)");
277
278 if (direction == DIRECTION_IN) {
279 res = ctx->dli->GetDisplayModeIterator (&itermode);
280 } else {
281 res = ctx->dlo->GetDisplayModeIterator (&itermode);
282 }
283
284 if (res!= S_OK) {
285 av_log(avctx, AV_LOG_ERROR, "Could not get Display Mode Iterator\n");
286 return AVERROR(EIO);
287 }
288
289 char format_buf[] = " ";
290 if (cctx->format_code)
291 memcpy(format_buf, cctx->format_code, FFMIN(strlen(cctx->format_code), sizeof(format_buf)));
292 BMDDisplayMode target_mode = (BMDDisplayMode)AV_RB32(format_buf);
293 AVRational target_tb = av_make_q(tb_num, tb_den);
294 ctx->bmd_mode = bmdModeUnknown;
295 while ((ctx->bmd_mode == bmdModeUnknown) && itermode->Next(&mode) == S_OK) {
296 BMDTimeValue bmd_tb_num, bmd_tb_den;
297 int bmd_width = mode->GetWidth();
298 int bmd_height = mode->GetHeight();
299 BMDDisplayMode bmd_mode = mode->GetDisplayMode();
300 BMDFieldDominance bmd_field_dominance = mode->GetFieldDominance();
301
302 mode->GetFrameRate(&bmd_tb_num, &bmd_tb_den);
303 AVRational mode_tb = av_make_q(bmd_tb_num, bmd_tb_den);
304
305 if ((bmd_width == width &&
306 bmd_height == height &&
307 !av_cmp_q(mode_tb, target_tb) &&
308 field_order_eq(field_order, bmd_field_dominance))
309 || target_mode == bmd_mode) {
310 ctx->bmd_mode = bmd_mode;
311 ctx->bmd_width = bmd_width;
312 ctx->bmd_height = bmd_height;
313 ctx->bmd_tb_den = bmd_tb_den;
314 ctx->bmd_tb_num = bmd_tb_num;
315 ctx->bmd_field_dominance = bmd_field_dominance;
316 av_log(avctx, AV_LOG_INFO, "Found Decklink mode %d x %d with rate %.2f%s\n",
317 bmd_width, bmd_height, 1/av_q2d(mode_tb),
318 (ctx->bmd_field_dominance==bmdLowerFieldFirst || ctx->bmd_field_dominance==bmdUpperFieldFirst)?"(i)":"");
319 }
320
321 mode->Release();
322 i++;
323 }
324
325 itermode->Release();
326
327 if (ctx->bmd_mode == bmdModeUnknown)
328 return -1;
329
330 #if BLACKMAGIC_DECKLINK_API_VERSION >= 0x0b050000
331 if (direction == DIRECTION_IN) {
332 BMDDisplayMode actualMode = ctx->bmd_mode;
333 if (ctx->dli->DoesSupportVideoMode(ctx->video_input, ctx->bmd_mode, ctx->raw_format,
334 bmdNoVideoInputConversion, bmdSupportedVideoModeDefault,
335 &actualMode, &support) != S_OK || !support || ctx->bmd_mode != actualMode)
336 return -1;
337 } else {
338 BMDDisplayMode actualMode = ctx->bmd_mode;
339 if (ctx->dlo->DoesSupportVideoMode(bmdVideoConnectionUnspecified, ctx->bmd_mode, ctx->raw_format,
340 bmdNoVideoOutputConversion, bmdSupportedVideoModeDefault,
341 &actualMode, &support) != S_OK || !support || ctx->bmd_mode != actualMode)
342 return -1;
343 }
344 return 0;
345 #elif BLACKMAGIC_DECKLINK_API_VERSION >= 0x0b000000
346 if (direction == DIRECTION_IN) {
347 if (ctx->dli->DoesSupportVideoMode(ctx->video_input, ctx->bmd_mode, ctx->raw_format,
348 bmdSupportedVideoModeDefault,
349 &support) != S_OK)
350 return -1;
351 } else {
352 BMDDisplayMode actualMode = ctx->bmd_mode;
353 if (ctx->dlo->DoesSupportVideoMode(bmdVideoConnectionUnspecified, ctx->bmd_mode, ctx->raw_format,
354 bmdSupportedVideoModeDefault,
355 &actualMode, &support) != S_OK || !support || ctx->bmd_mode != actualMode) {
356 return -1;
357 }
358
359 }
360 if (support)
361 return 0;
362 #else
363 if (direction == DIRECTION_IN) {
364 if (ctx->dli->DoesSupportVideoMode(ctx->bmd_mode, ctx->raw_format,
365 bmdVideoOutputFlagDefault,
366 &support, NULL) != S_OK)
367 return -1;
368 } else {
369 if (!ctx->supports_vanc || ctx->dlo->DoesSupportVideoMode(ctx->bmd_mode, ctx->raw_format,
370 bmdVideoOutputVANC,
371 &support, NULL) != S_OK || support != bmdDisplayModeSupported) {
372 /* Try without VANC enabled */
373 if (ctx->dlo->DoesSupportVideoMode(ctx->bmd_mode, ctx->raw_format,
374 bmdVideoOutputFlagDefault,
375 &support, NULL) != S_OK) {
376 return -1;
377 }
378 ctx->supports_vanc = 0;
379 }
380
381 }
382 if (support == bmdDisplayModeSupported)
383 return 0;
384 #endif
385
386 return -1;
387 }
388
ff_decklink_set_format(AVFormatContext * avctx,decklink_direction_t direction)389 int ff_decklink_set_format(AVFormatContext *avctx, decklink_direction_t direction) {
390 return ff_decklink_set_format(avctx, 0, 0, 0, 0, AV_FIELD_UNKNOWN, direction);
391 }
392
ff_decklink_list_devices(AVFormatContext * avctx,struct AVDeviceInfoList * device_list,int show_inputs,int show_outputs)393 int ff_decklink_list_devices(AVFormatContext *avctx,
394 struct AVDeviceInfoList *device_list,
395 int show_inputs, int show_outputs)
396 {
397 IDeckLink *dl = NULL;
398 IDeckLinkIterator *iter = decklink_create_iterator(avctx);
399 int ret = 0;
400
401 if (!iter)
402 return AVERROR(EIO);
403
404 while (ret == 0 && iter->Next(&dl) == S_OK) {
405 IDeckLinkOutput *output_config;
406 IDeckLinkInput *input_config;
407 const char *display_name = NULL;
408 const char *unique_name = NULL;
409 AVDeviceInfo *new_device = NULL;
410 int add = 0;
411
412 ret = decklink_get_attr_string(dl, BMDDeckLinkDisplayName, &display_name);
413 if (ret < 0)
414 goto next;
415 ret = decklink_get_attr_string(dl, BMDDeckLinkDeviceHandle, &unique_name);
416 if (ret < 0)
417 goto next;
418
419 if (show_outputs) {
420 if (dl->QueryInterface(IID_IDeckLinkOutput, (void **)&output_config) == S_OK) {
421 output_config->Release();
422 add = 1;
423 }
424 }
425
426 if (show_inputs) {
427 if (dl->QueryInterface(IID_IDeckLinkInput, (void **)&input_config) == S_OK) {
428 input_config->Release();
429 add = 1;
430 }
431 }
432
433 if (add == 1) {
434 new_device = (AVDeviceInfo *) av_mallocz(sizeof(AVDeviceInfo));
435 if (!new_device) {
436 ret = AVERROR(ENOMEM);
437 goto next;
438 }
439
440 new_device->device_name = av_strdup(unique_name ? unique_name : display_name);
441 new_device->device_description = av_strdup(display_name);
442
443 if (!new_device->device_name ||
444 !new_device->device_description ||
445 av_dynarray_add_nofree(&device_list->devices, &device_list->nb_devices, new_device) < 0) {
446 ret = AVERROR(ENOMEM);
447 av_freep(&new_device->device_name);
448 av_freep(&new_device->device_description);
449 av_freep(&new_device);
450 goto next;
451 }
452 }
453
454 next:
455 av_freep(&display_name);
456 av_freep(&unique_name);
457 dl->Release();
458 }
459 iter->Release();
460 return ret;
461 }
462
463 /* This is a wrapper around the ff_decklink_list_devices() which dumps the
464 output to av_log() and exits (for backward compatibility with the
465 "-list_devices" argument). */
ff_decklink_list_devices_legacy(AVFormatContext * avctx,int show_inputs,int show_outputs)466 void ff_decklink_list_devices_legacy(AVFormatContext *avctx,
467 int show_inputs, int show_outputs)
468 {
469 struct AVDeviceInfoList *device_list = NULL;
470 int ret;
471
472 device_list = (struct AVDeviceInfoList *) av_mallocz(sizeof(AVDeviceInfoList));
473 if (!device_list)
474 return;
475
476 ret = ff_decklink_list_devices(avctx, device_list, show_inputs, show_outputs);
477 if (ret == 0) {
478 av_log(avctx, AV_LOG_INFO, "Blackmagic DeckLink %s devices:\n",
479 show_inputs ? "input" : "output");
480 for (int i = 0; i < device_list->nb_devices; i++) {
481 av_log(avctx, AV_LOG_INFO, "\t'%s'\n", device_list->devices[i]->device_description);
482 }
483 }
484 avdevice_free_list_devices(&device_list);
485 }
486
ff_decklink_list_formats(AVFormatContext * avctx,decklink_direction_t direction)487 int ff_decklink_list_formats(AVFormatContext *avctx, decklink_direction_t direction)
488 {
489 struct decklink_cctx *cctx = (struct decklink_cctx *)avctx->priv_data;
490 struct decklink_ctx *ctx = (struct decklink_ctx *)cctx->ctx;
491 IDeckLinkDisplayModeIterator *itermode;
492 IDeckLinkDisplayMode *mode;
493 uint32_t format_code;
494 HRESULT res;
495
496 if (direction == DIRECTION_IN) {
497 int ret;
498 ret = decklink_select_input(avctx, bmdDeckLinkConfigAudioInputConnection);
499 if (ret < 0)
500 return ret;
501 ret = decklink_select_input(avctx, bmdDeckLinkConfigVideoInputConnection);
502 if (ret < 0)
503 return ret;
504 res = ctx->dli->GetDisplayModeIterator (&itermode);
505 } else {
506 res = ctx->dlo->GetDisplayModeIterator (&itermode);
507 }
508
509 if (res!= S_OK) {
510 av_log(avctx, AV_LOG_ERROR, "Could not get Display Mode Iterator\n");
511 return AVERROR(EIO);
512 }
513
514 av_log(avctx, AV_LOG_INFO, "Supported formats for '%s':\n\tformat_code\tdescription",
515 avctx->url);
516 while (itermode->Next(&mode) == S_OK) {
517 BMDTimeValue tb_num, tb_den;
518 mode->GetFrameRate(&tb_num, &tb_den);
519 format_code = av_bswap32(mode->GetDisplayMode());
520 av_log(avctx, AV_LOG_INFO, "\n\t%.4s\t\t%ldx%ld at %d/%d fps",
521 (char*) &format_code, mode->GetWidth(), mode->GetHeight(),
522 (int) tb_den, (int) tb_num);
523 switch (mode->GetFieldDominance()) {
524 case bmdLowerFieldFirst:
525 av_log(avctx, AV_LOG_INFO, " (interlaced, lower field first)"); break;
526 case bmdUpperFieldFirst:
527 av_log(avctx, AV_LOG_INFO, " (interlaced, upper field first)"); break;
528 }
529 mode->Release();
530 }
531 av_log(avctx, AV_LOG_INFO, "\n");
532
533 itermode->Release();
534
535 return 0;
536 }
537
ff_decklink_cleanup(AVFormatContext * avctx)538 void ff_decklink_cleanup(AVFormatContext *avctx)
539 {
540 struct decklink_cctx *cctx = (struct decklink_cctx *)avctx->priv_data;
541 struct decklink_ctx *ctx = (struct decklink_ctx *)cctx->ctx;
542
543 if (ctx->dli)
544 ctx->dli->Release();
545 if (ctx->dlo)
546 ctx->dlo->Release();
547 if (ctx->attr)
548 ctx->attr->Release();
549 if (ctx->cfg)
550 ctx->cfg->Release();
551 if (ctx->dl)
552 ctx->dl->Release();
553 }
554
ff_decklink_init_device(AVFormatContext * avctx,const char * name)555 int ff_decklink_init_device(AVFormatContext *avctx, const char* name)
556 {
557 struct decklink_cctx *cctx = (struct decklink_cctx *)avctx->priv_data;
558 struct decklink_ctx *ctx = (struct decklink_ctx *)cctx->ctx;
559 IDeckLink *dl = NULL;
560 IDeckLinkIterator *iter = decklink_create_iterator(avctx);
561 if (!iter)
562 return AVERROR_EXTERNAL;
563
564 while (iter->Next(&dl) == S_OK) {
565 const char *display_name = NULL;
566 const char *unique_name = NULL;
567 decklink_get_attr_string(dl, BMDDeckLinkDisplayName, &display_name);
568 decklink_get_attr_string(dl, BMDDeckLinkDeviceHandle, &unique_name);
569 if (display_name && !strcmp(name, display_name) || unique_name && !strcmp(name, unique_name)) {
570 av_free((void *)unique_name);
571 av_free((void *)display_name);
572 ctx->dl = dl;
573 break;
574 }
575 av_free((void *)display_name);
576 av_free((void *)unique_name);
577 dl->Release();
578 }
579 iter->Release();
580 if (!ctx->dl)
581 return AVERROR(ENXIO);
582
583 if (ctx->dl->QueryInterface(IID_IDeckLinkConfiguration, (void **)&ctx->cfg) != S_OK) {
584 av_log(avctx, AV_LOG_ERROR, "Could not get configuration interface for '%s'\n", name);
585 ff_decklink_cleanup(avctx);
586 return AVERROR_EXTERNAL;
587 }
588
589 if (ctx->dl->QueryInterface(IID_IDeckLinkProfileAttributes, (void **)&ctx->attr) != S_OK) {
590 av_log(avctx, AV_LOG_ERROR, "Could not get attributes interface for '%s'\n", name);
591 ff_decklink_cleanup(avctx);
592 return AVERROR_EXTERNAL;
593 }
594
595 return 0;
596 }
597