FFmpeg: libavdevice/decklink_dec.cpp Source File

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decklink_dec.cpp

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1 /*

2 * Blackmagic DeckLink output

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 */

22 #include <DeckLinkAPI.h>

24 #include <pthread.h>

25 #include <semaphore.h>

27 extern "C" {

28 #include "config.h"

29 #include "libavformat/avformat.h"

30 #include "libavformat/internal.h"

31 #include "libavutil/imgutils.h"

32 #if CONFIG_LIBZVBI

33 #include <libzvbi.h>

34 #endif

35 }

37 #include "decklink_common.h"

38 #include "decklink_dec.h"

40 #if CONFIG_LIBZVBI

41 static uint8_t calc_parity_and_line_offset(int line)

42 {

43 uint8_t ret = (line < 313) << 5;

44 if (line >= 7 && line <= 22)

45 ret += line;

46 if (line >= 320 && line <= 335)

47 ret += (line - 313);

48 return ret;

49 }

51 int teletext_data_unit_from_vbi_data(int line, uint8_t *src, uint8_t *tgt)

52 {

53 vbi_bit_slicer slicer;

55 vbi_bit_slicer_init(&slicer, 720, 13500000, 6937500, 6937500, 0x00aaaae4, 0xffff, 18, 6, 42 * 8, VBI_MODULATION_NRZ_MSB, VBI_PIXFMT_UYVY);

57 if (vbi_bit_slice(&slicer, src, tgt + 4) == FALSE)

58 return -1;

60 tgt[0] = 0x02; // data_unit_id

61 tgt[1] = 0x2c; // data_unit_length

62 tgt[2] = calc_parity_and_line_offset(line); // field_parity, line_offset

63 tgt[3] = 0xe4; // framing code

65 return 0;

66 }

67 #endif

69 static void avpacket_queue_init(AVFormatContext *avctx, AVPacketQueue *q)

70 {

71 memset(q, 0, sizeof(AVPacketQueue));

72 pthread_mutex_init(&q->mutex, NULL);

73 pthread_cond_init(&q->cond, NULL);

74 q->avctx = avctx;

75 }

77 static void avpacket_queue_flush(AVPacketQueue *q)

78 {

79 AVPacketList *pkt, *pkt1;

81 pthread_mutex_lock(&q->mutex);

82 for (pkt = q->first_pkt; pkt != NULL; pkt = pkt1) {

83 pkt1 = pkt->next;

84 av_packet_unref(&pkt->pkt);

85 av_freep(&pkt);

86 }

87 q->last_pkt = NULL;

88 q->first_pkt = NULL;

89 q->nb_packets = 0;

90 q->size = 0;

91 pthread_mutex_unlock(&q->mutex);

92 }

94 static void avpacket_queue_end(AVPacketQueue *q)

95 {

96 avpacket_queue_flush(q);

97 pthread_mutex_destroy(&q->mutex);

98 pthread_cond_destroy(&q->cond);

99 }

100

101 static unsigned long long avpacket_queue_size(AVPacketQueue *q)

102 {

103 unsigned long long size;

104 pthread_mutex_lock(&q->mutex);

105 size = q->size;

106 pthread_mutex_unlock(&q->mutex);

107 return size;

108 }

109

110 static int avpacket_queue_put(AVPacketQueue *q, AVPacket *pkt)

111 {

112 AVPacketList *pkt1;

113

114 // Drop Packet if queue size is > 1GB

115 if (avpacket_queue_size(q) > 1024 * 1024 * 1024 ) {

116 av_log(q->avctx, AV_LOG_WARNING, "Decklink input buffer overrun!\n");

117 return -1;

118 }

119 /* duplicate the packet */

120 if (av_dup_packet(pkt) < 0) {

121 return -1;

122 }

123

124 pkt1 = (AVPacketList *)av_malloc(sizeof(AVPacketList));

125 if (!pkt1) {

126 return -1;

127 }

128 pkt1->pkt = *pkt;

129 pkt1->next = NULL;

130

131 pthread_mutex_lock(&q->mutex);

132

133 if (!q->last_pkt) {

134 q->first_pkt = pkt1;

135 } else {

136 q->last_pkt->next = pkt1;

137 }

138

139 q->last_pkt = pkt1;

140 q->nb_packets++;

141 q->size += pkt1->pkt.size + sizeof(*pkt1);

142

143 pthread_cond_signal(&q->cond);

144

145 pthread_mutex_unlock(&q->mutex);

146 return 0;

147 }

148

149 static int avpacket_queue_get(AVPacketQueue *q, AVPacket *pkt, int block)

150 {

151 AVPacketList *pkt1;

152 int ret;

153

154 pthread_mutex_lock(&q->mutex);

155

156 for (;; ) {

157 pkt1 = q->first_pkt;

158 if (pkt1) {

159 q->first_pkt = pkt1->next;

160 if (!q->first_pkt) {

161 q->last_pkt = NULL;

162 }

163 q->nb_packets--;

164 q->size -= pkt1->pkt.size + sizeof(*pkt1);

165 *pkt = pkt1->pkt;

166 av_free(pkt1);

167 ret = 1;

168 break;

169 } else if (!block) {

170 ret = 0;

171 break;

172 } else {

173 pthread_cond_wait(&q->cond, &q->mutex);

174 }

175 }

176 pthread_mutex_unlock(&q->mutex);

177 return ret;

178 }

179

180 class decklink_input_callback : public IDeckLinkInputCallback

181 {

182 public:

183 decklink_input_callback(AVFormatContext *_avctx);

184 ~decklink_input_callback();

185

186 virtual HRESULT STDMETHODCALLTYPE QueryInterface(REFIID iid, LPVOID *ppv) { return E_NOINTERFACE; }

187 virtual ULONG STDMETHODCALLTYPE AddRef(void);

188 virtual ULONG STDMETHODCALLTYPE Release(void);

189 virtual HRESULT STDMETHODCALLTYPE VideoInputFormatChanged(BMDVideoInputFormatChangedEvents, IDeckLinkDisplayMode*, BMDDetectedVideoInputFormatFlags);

190 virtual HRESULT STDMETHODCALLTYPE VideoInputFrameArrived(IDeckLinkVideoInputFrame*, IDeckLinkAudioInputPacket*);

191

192 private:

193 ULONG m_refCount;

194 pthread_mutex_t m_mutex;

195 AVFormatContext *avctx;

196 decklink_ctx *ctx;

197 int no_video;

198 int64_t initial_video_pts;

199 int64_t initial_audio_pts;

200 };

201

202 decklink_input_callback::decklink_input_callback(AVFormatContext *_avctx) : m_refCount(0)

203 {

204 avctx = _avctx;

205 decklink_cctx *cctx = (struct decklink_cctx *) avctx->priv_data;

206 ctx = (struct decklink_ctx *) cctx->ctx;

207 initial_audio_pts = initial_video_pts = AV_NOPTS_VALUE;

208 pthread_mutex_init(&m_mutex, NULL);

209 }

210

211 decklink_input_callback::~decklink_input_callback()

212 {

213 pthread_mutex_destroy(&m_mutex);

214 }

215

216 ULONG decklink_input_callback::AddRef(void)

217 {

218 pthread_mutex_lock(&m_mutex);

219 m_refCount++;

220 pthread_mutex_unlock(&m_mutex);

221

222 return (ULONG)m_refCount;

223 }

224

225 ULONG decklink_input_callback::Release(void)

226 {

227 pthread_mutex_lock(&m_mutex);

228 m_refCount--;

229 pthread_mutex_unlock(&m_mutex);

230

231 if (m_refCount == 0) {

232 delete this;

233 return 0;

234 }

235

236 return (ULONG)m_refCount;

237 }

238

239 HRESULT decklink_input_callback::VideoInputFrameArrived(

240 IDeckLinkVideoInputFrame *videoFrame, IDeckLinkAudioInputPacket *audioFrame)

241 {

242 void *frameBytes;

243 void *audioFrameBytes;

244 BMDTimeValue frameTime;

245 BMDTimeValue frameDuration;

246

247 ctx->frameCount++;

248

249 // Handle Video Frame

250 if (videoFrame) {

251 AVPacket pkt;

252 AVCodecContext *c;

253 av_init_packet(&pkt);

254 c = ctx->video_st->codec;

255 if (ctx->frameCount % 25 == 0) {

256 unsigned long long qsize = avpacket_queue_size(&ctx->queue);

257 av_log(avctx, AV_LOG_DEBUG,

258 "Frame received (#%lu) - Valid (%liB) - QSize %fMB\n",

259 ctx->frameCount,

260 videoFrame->GetRowBytes() * videoFrame->GetHeight(),

261 (double)qsize / 1024 / 1024);

262 }

263

264 videoFrame->GetBytes(&frameBytes);

265 videoFrame->GetStreamTime(&frameTime, &frameDuration,

266 ctx->video_st->time_base.den);

267

268 if (videoFrame->GetFlags() & bmdFrameHasNoInputSource) {

269 if (videoFrame->GetPixelFormat() == bmdFormat8BitYUV) {

270 unsigned bars[8] = {

271 0xEA80EA80, 0xD292D210, 0xA910A9A5, 0x90229035,

272 0x6ADD6ACA, 0x51EF515A, 0x286D28EF, 0x10801080 };

273 int width = videoFrame->GetWidth();

274 int height = videoFrame->GetHeight();

275 unsigned *p = (unsigned *)frameBytes;

276

277 for (int y = 0; y < height; y++) {

278 for (int x = 0; x < width; x += 2)

279 *p++ = bars[(x * 8) / width];

280 }

281 }

282

283 if (!no_video) {

284 av_log(avctx, AV_LOG_WARNING, "Frame received (#%lu) - No input signal detected "

285 "- Frames dropped %u\n", ctx->frameCount, ++ctx->dropped);

286 }

287 no_video = 1;

288 } else {

289 if (no_video) {

290 av_log(avctx, AV_LOG_WARNING, "Frame received (#%lu) - Input returned "

291 "- Frames dropped %u\n", ctx->frameCount, ++ctx->dropped);

292 }

293 no_video = 0;

294 }

295

296 pkt.pts = frameTime / ctx->video_st->time_base.num;

297

298 if (initial_video_pts == AV_NOPTS_VALUE) {

299 initial_video_pts = pkt.pts;

300 }

301

302 pkt.pts -= initial_video_pts;

303 pkt.dts = pkt.pts;

304

305 pkt.duration = frameDuration;

306 //To be made sure it still applies

307 pkt.flags |= AV_PKT_FLAG_KEY;

308 pkt.stream_index = ctx->video_st->index;

309 pkt.data = (uint8_t *)frameBytes;

310 pkt.size = videoFrame->GetRowBytes() *

311 videoFrame->GetHeight();

312 //fprintf(stderr,"Video Frame size %d ts %d\n", pkt.size, pkt.pts);

313

314 #if CONFIG_LIBZVBI

315 if (!no_video && ctx->teletext_lines && videoFrame->GetPixelFormat() == bmdFormat8BitYUV && videoFrame->GetWidth() == 720) {

316 IDeckLinkVideoFrameAncillary *vanc;

317 AVPacket txt_pkt;

318 uint8_t txt_buf0[1611]; // max 35 * 46 bytes decoded teletext lines + 1 byte data_identifier

319 uint8_t *txt_buf = txt_buf0;

320

321 if (videoFrame->GetAncillaryData(&vanc) == S_OK) {

322 int i;

323 int64_t line_mask = 1;

324 txt_buf[0] = 0x10; // data_identifier - EBU_data

325 txt_buf++;

326 for (i = 6; i < 336; i++, line_mask <<= 1) {

327 uint8_t *buf;

328 if ((ctx->teletext_lines & line_mask) && vanc->GetBufferForVerticalBlankingLine(i, (void**)&buf) == S_OK) {

329 if (teletext_data_unit_from_vbi_data(i, buf, txt_buf) >= 0)

330 txt_buf += 46;

331 }

332 if (i == 22)

333 i = 317;

334 }

335 vanc->Release();

336 if (txt_buf - txt_buf0 > 1) {

337 int stuffing_units = (4 - ((45 + txt_buf - txt_buf0) / 46) % 4) % 4;

338 while (stuffing_units--) {

339 memset(txt_buf, 0xff, 46);

340 txt_buf[1] = 0x2c; // data_unit_length

341 txt_buf += 46;

342 }

343 av_init_packet(&txt_pkt);

344 txt_pkt.pts = pkt.pts;

345 txt_pkt.dts = pkt.dts;

346 txt_pkt.stream_index = ctx->teletext_st->index;

347 txt_pkt.data = txt_buf0;

348 txt_pkt.size = txt_buf - txt_buf0;

349 if (avpacket_queue_put(&ctx->queue, &txt_pkt) < 0) {

350 ++ctx->dropped;

351 }

352 }

353 }

354 }

355 #endif

356

357 c->frame_number++;

358 if (avpacket_queue_put(&ctx->queue, &pkt) < 0) {

359 ++ctx->dropped;

360 }

361 }

362

363 // Handle Audio Frame

364 if (audioFrame) {

365 AVCodecContext *c;

366 AVPacket pkt;

367 BMDTimeValue audio_pts;

368 av_init_packet(&pkt);

369

370 c = ctx->audio_st->codec;

371 //hack among hacks

372 pkt.size = audioFrame->GetSampleFrameCount() * ctx->audio_st->codec->channels * (16 / 8);

373 audioFrame->GetBytes(&audioFrameBytes);

374 audioFrame->GetPacketTime(&audio_pts, ctx->audio_st->time_base.den);

375 pkt.pts = audio_pts / ctx->audio_st->time_base.num;

376

377 if (initial_audio_pts == AV_NOPTS_VALUE) {

378 initial_audio_pts = pkt.pts;

379 }

380

381 pkt.pts -= initial_audio_pts;

382 pkt.dts = pkt.pts;

383

384 //fprintf(stderr,"Audio Frame size %d ts %d\n", pkt.size, pkt.pts);

385 pkt.flags |= AV_PKT_FLAG_KEY;

386 pkt.stream_index = ctx->audio_st->index;

387 pkt.data = (uint8_t *)audioFrameBytes;

388

389 c->frame_number++;

390 if (avpacket_queue_put(&ctx->queue, &pkt) < 0) {

391 ++ctx->dropped;

392 }

393 }

394

395 return S_OK;

396 }

397

398 HRESULT decklink_input_callback::VideoInputFormatChanged(

399 BMDVideoInputFormatChangedEvents events, IDeckLinkDisplayMode *mode,

400 BMDDetectedVideoInputFormatFlags)

401 {

402 return S_OK;

403 }

404

405 static HRESULT decklink_start_input(AVFormatContext *avctx)

406 {

407 struct decklink_cctx *cctx = (struct decklink_cctx *) avctx->priv_data;

408 struct decklink_ctx *ctx = (struct decklink_ctx *) cctx->ctx;

409

410 ctx->input_callback = new decklink_input_callback(avctx);

411 ctx->dli->SetCallback(ctx->input_callback);

412 return ctx->dli->StartStreams();

413 }

414

415 extern "C" {

416

417 av_cold int ff_decklink_read_close(AVFormatContext *avctx)

418 {

419 struct decklink_cctx *cctx = (struct decklink_cctx *) avctx->priv_data;

420 struct decklink_ctx *ctx = (struct decklink_ctx *) cctx->ctx;

421

422 if (ctx->capture_started) {

423 ctx->dli->StopStreams();

424 ctx->dli->DisableVideoInput();

425 ctx->dli->DisableAudioInput();

426 }

427

428 if (ctx->dli)

429 ctx->dli->Release();

430 if (ctx->dl)

431 ctx->dl->Release();

432

433 avpacket_queue_end(&ctx->queue);

434

435 av_freep(&cctx->ctx);

436

437 return 0;

438 }

439

440 av_cold int ff_decklink_read_header(AVFormatContext *avctx)

441 {

442 struct decklink_cctx *cctx = (struct decklink_cctx *) avctx->priv_data;

443 struct decklink_ctx *ctx;

444 IDeckLinkDisplayModeIterator *itermode;

445 IDeckLinkIterator *iter;

446 IDeckLink *dl = NULL;

447 AVStream *st;

448 HRESULT result;

449 char fname[1024];

450 char *tmp;

451 int mode_num = 0;

452

453 ctx = (struct decklink_ctx *) av_mallocz(sizeof(struct decklink_ctx));

454 if (!ctx)

455 return AVERROR(ENOMEM);

456 ctx->list_devices = cctx->list_devices;

457 ctx->list_formats = cctx->list_formats;

458 ctx->teletext_lines = cctx->teletext_lines;

459 ctx->preroll = cctx->preroll;

460 cctx->ctx = ctx;

461

462 #if !CONFIG_LIBZVBI

463 if (ctx->teletext_lines) {

464 av_log(avctx, AV_LOG_ERROR, "Libzvbi support is needed for capturing teletext, please recompile FFmpeg.\n");

465 return AVERROR(ENOSYS);

466 }

467 #endif

468

469 /* Check audio channel option for valid values: 2, 8 or 16 */

470 switch (cctx->audio_channels) {

471 case 2:

472 case 8:

473 case 16:

474 break;

475 default:

476 av_log(avctx, AV_LOG_ERROR, "Value of channels option must be one of 2, 8 or 16\n");

477 return AVERROR(EINVAL);

478 }

479

480 iter = CreateDeckLinkIteratorInstance();

481 if (!iter) {

482 av_log(avctx, AV_LOG_ERROR, "Could not create DeckLink iterator\n");

483 return AVERROR(EIO);

484 }

485

486 /* List available devices. */

487 if (ctx->list_devices) {

488 ff_decklink_list_devices(avctx);

489 return AVERROR_EXIT;

490 }

491

492 strcpy (fname, avctx->filename);

493 tmp=strchr (fname, '@');

494 if (tmp != NULL) {

495 mode_num = atoi (tmp+1);

496 *tmp = 0;

497 }

498

499 /* Open device. */

500 while (iter->Next(&dl) == S_OK) {

501 const char *displayName;

502 ff_decklink_get_display_name(dl, &displayName);

503 if (!strcmp(fname, displayName)) {

504 av_free((void *) displayName);

505 ctx->dl = dl;

506 break;

507 }

508 av_free((void *) displayName);

509 dl->Release();

510 }

511 iter->Release();

512 if (!ctx->dl) {

513 av_log(avctx, AV_LOG_ERROR, "Could not open '%s'\n", fname);

514 return AVERROR(EIO);

515 }

516

517 /* Get input device. */

518 if (ctx->dl->QueryInterface(IID_IDeckLinkInput, (void **) &ctx->dli) != S_OK) {

519 av_log(avctx, AV_LOG_ERROR, "Could not open output device from '%s'\n",

520 avctx->filename);

521 ctx->dl->Release();

522 return AVERROR(EIO);

523 }

524

525 /* List supported formats. */

526 if (ctx->list_formats) {

527 ff_decklink_list_formats(avctx, DIRECTION_IN);

528 ctx->dli->Release();

529 ctx->dl->Release();

530 return AVERROR_EXIT;

531 }

532

533 if (ctx->dli->GetDisplayModeIterator(&itermode) != S_OK) {

534 av_log(avctx, AV_LOG_ERROR, "Could not get Display Mode Iterator\n");

535 ctx->dl->Release();

536 return AVERROR(EIO);

537 }

538

539 if (mode_num > 0) {

540 if (ff_decklink_set_format(avctx, DIRECTION_IN, mode_num) < 0) {

541 av_log(avctx, AV_LOG_ERROR, "Could not set mode %d for %s\n", mode_num, fname);

542 goto error;

543 }

544 }

545

546 itermode->Release();

547

548 /* Setup streams. */

549 st = avformat_new_stream(avctx, NULL);

550 if (!st) {

551 av_log(avctx, AV_LOG_ERROR, "Cannot add stream\n");

552 goto error;

553 }

554 st->codec->codec_type = AVMEDIA_TYPE_AUDIO;

555 st->codec->codec_id = AV_CODEC_ID_PCM_S16LE;

556 st->codec->sample_rate = bmdAudioSampleRate48kHz;

557 st->codec->channels = cctx->audio_channels;

558 avpriv_set_pts_info(st, 64, 1, 1000000); /* 64 bits pts in us */

559 ctx->audio_st=st;

560

561 st = avformat_new_stream(avctx, NULL);

562 if (!st) {

563 av_log(avctx, AV_LOG_ERROR, "Cannot add stream\n");

564 goto error;

565 }

566 st->codec->codec_type = AVMEDIA_TYPE_VIDEO;

567 st->codec->width = ctx->bmd_width;

568 st->codec->height = ctx->bmd_height;

569

570 st->codec->time_base.den = ctx->bmd_tb_den;

571 st->codec->time_base.num = ctx->bmd_tb_num;

572 st->codec->bit_rate = av_image_get_buffer_size(st->codec->pix_fmt, ctx->bmd_width, ctx->bmd_height, 1) * 1/av_q2d(st->codec->time_base) * 8;

573

574 if (cctx->v210) {

575 st->codec->codec_id = AV_CODEC_ID_V210;

576 st->codec->codec_tag = MKTAG('V', '2', '1', '0');

577 } else {

578 st->codec->codec_id = AV_CODEC_ID_RAWVIDEO;

579 st->codec->pix_fmt = AV_PIX_FMT_UYVY422;

580 st->codec->codec_tag = MKTAG('U', 'Y', 'V', 'Y');

581 }

582

583 avpriv_set_pts_info(st, 64, 1, 1000000); /* 64 bits pts in us */

584

585 ctx->video_st=st;

586

587 if (ctx->teletext_lines) {

588 st = avformat_new_stream(avctx, NULL);

589 if (!st) {

590 av_log(avctx, AV_LOG_ERROR, "Cannot add stream\n");

591 goto error;

592 }

593 st->codec->codec_type = AVMEDIA_TYPE_SUBTITLE;

594 st->codec->time_base.den = ctx->bmd_tb_den;

595 st->codec->time_base.num = ctx->bmd_tb_num;

596 st->codec->codec_id = AV_CODEC_ID_DVB_TELETEXT;

597 avpriv_set_pts_info(st, 64, 1, 1000000); /* 64 bits pts in us */

598 ctx->teletext_st = st;

599 }

600

601 av_log(avctx, AV_LOG_VERBOSE, "Using %d input audio channels\n", ctx->audio_st->codec->channels);

602 result = ctx->dli->EnableAudioInput(bmdAudioSampleRate48kHz, bmdAudioSampleType16bitInteger, ctx->audio_st->codec->channels);

603

604 if (result != S_OK) {

605 av_log(avctx, AV_LOG_ERROR, "Cannot enable audio input\n");

606 goto error;

607 }

608

609 result = ctx->dli->EnableVideoInput(ctx->bmd_mode,

610 cctx->v210 ? bmdFormat10BitYUV : bmdFormat8BitYUV,

611 bmdVideoInputFlagDefault);

612

613 if (result != S_OK) {

614 av_log(avctx, AV_LOG_ERROR, "Cannot enable video input\n");

615 goto error;

616 }

617

618 avpacket_queue_init (avctx, &ctx->queue);

619

620 if (decklink_start_input (avctx) != S_OK) {

621 av_log(avctx, AV_LOG_ERROR, "Cannot start input stream\n");

622 goto error;

623 }

624

625 return 0;

626

627 error:

628

629 ctx->dli->Release();

630 ctx->dl->Release();

631

632 return AVERROR(EIO);

633 }

634

635 int ff_decklink_read_packet(AVFormatContext *avctx, AVPacket *pkt)

636 {

637 struct decklink_cctx *cctx = (struct decklink_cctx *) avctx->priv_data;

638 struct decklink_ctx *ctx = (struct decklink_ctx *) cctx->ctx;

639 AVFrame *frame = ctx->video_st->codec->coded_frame;

640

641 avpacket_queue_get(&ctx->queue, pkt, 1);

642 if (frame && (ctx->bmd_field_dominance == bmdUpperFieldFirst || ctx->bmd_field_dominance == bmdLowerFieldFirst)) {

643 frame->interlaced_frame = 1;

644 if (ctx->bmd_field_dominance == bmdUpperFieldFirst) {

645 frame->top_field_first = 1;

646 }

647 }

648

649 return 0;

650 }

651

652 } /* extern "C" */

AV_PIX_FMT_UYVY422

packed YUV 4:2:2, 16bpp, Cb Y0 Cr Y1

Definition: pixfmt.h:83

NULL

#define NULL

Definition: coverity.c:32

decklink_cctx::ctx

void * ctx

Definition: decklink_common_c.h:28

pthread_mutex_destroy

static av_always_inline int pthread_mutex_destroy(pthread_mutex_t *mutex)

Definition: os2threads.h:106

S_OK

#define S_OK

Definition: windows2linux.h:40

AVFrame

This structure describes decoded (raw) audio or video data.

Definition: frame.h:181

decklink_cctx::v210

int v210

Definition: decklink_common_c.h:35

decklink_input_callback::avctx

AVFormatContext * avctx

Definition: decklink_dec.cpp:195

pthread_cond_wait

static av_always_inline int pthread_cond_wait(pthread_cond_t *cond, pthread_mutex_t *mutex)

Definition: os2threads.h:164

AV_CODEC_ID_DVB_TELETEXT

Definition: avcodec.h:513

ctx

AVFormatContext * ctx

Definition: movenc-test.c:48

decklink_input_callback::~decklink_input_callback

~decklink_input_callback()

Definition: decklink_dec.cpp:211

imgutils.h

misc image utilities

AV_LOG_WARNING

#define AV_LOG_WARNING

Something somehow does not look correct.

Definition: log.h:182

avpriv_set_pts_info

void avpriv_set_pts_info(AVStream *s, int pts_wrap_bits, unsigned int pts_num, unsigned int pts_den)

Set the time base and wrapping info for a given stream.

Definition: utils.c:4149

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numerator

Definition: rational.h:44

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Definition: avformat.h:878

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Definition: decklink_dec.cpp:199

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Definition: avcodec.h:1468

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Definition: basicDataTypeConversions.h:70

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Total stream bitrate in bit/s, 0 if not available.

Definition: avformat.h:1416

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static void avpacket_queue_init(AVFormatContext *avctx, AVPacketQueue *q)

Definition: decklink_dec.cpp:69

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static AVPacket pkt

Definition: demuxing_decoding.c:54

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Definition: decklink_common.h:38

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static av_always_inline int pthread_cond_destroy(pthread_cond_t *cond)

Definition: os2threads.h:138

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Format I/O context.

Definition: avformat.h:1314

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int nb_packets

Definition: decklink_common.h:34

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Definition: decklink_common.h:78

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unsigned int dropped

Definition: decklink_common.h:70

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pthread_mutex_t m_mutex

Definition: decklink_dec.cpp:194

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HMTX pthread_mutex_t

Definition: os2threads.h:49

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Definition: decklink_dec.cpp:202

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Definition: audio_convert.c:194

DIRECTION_IN

Definition: decklink_common.h:89

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Definition: attributes.h:82

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Definition: tableprint_vlc.h:31

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Definition: decklink_common.h:37

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Definition: f_perms.c:27

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Definition: decklink_common_c.h:25

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AVPacket pkt

Definition: avformat.h:1915

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Duration of this packet in AVStream->time_base units, 0 if unknown.

Definition: avcodec.h:1485

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Add a new stream to a media file.

Definition: utils.c:3805

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static AVFrame * frame

Definition: demuxing_decoding.c:53

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static double av_q2d(AVRational a)

Convert rational to double.

Definition: rational.h:80

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uint8_t * data

Definition: avcodec.h:1467

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Definition: avformat.h:1914

AV_LOG_VERBOSE

#define AV_LOG_VERBOSE

Detailed information.

Definition: log.h:192

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int no_video

Definition: decklink_dec.cpp:197

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static av_always_inline int pthread_cond_signal(pthread_cond_t *cond)

Definition: os2threads.h:146

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int interlaced_frame

The content of the picture is interlaced.

Definition: frame.h:312

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ptrdiff_t size

Definition: opengl_enc.c:101

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#define E_NOINTERFACE

Definition: windows2linux.h:42

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int ff_decklink_set_format(AVFormatContext *avctx, int width, int height, int tb_num, int tb_den, decklink_direction_t direction, int num)

Definition: decklink_common.cpp:101

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#define av_log(a,...)

Definition: tableprint_vlc.h:28

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Definition: decklink_common.h:72

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The packet contains a keyframe.

Definition: avcodec.h:1499

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int av_image_get_buffer_size(enum AVPixelFormat pix_fmt, int width, int height, int align)

Return the size in bytes of the amount of data required to store an image with the given parameters...

Definition: imgutils.c:361

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static void avpacket_queue_flush(AVPacketQueue *q)

Definition: decklink_dec.cpp:77

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#define AV_LOG_ERROR

Something went wrong and cannot losslessly be recovered.

Definition: log.h:176

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AVPacketList * last_pkt

Definition: decklink_common.h:33

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#define AVERROR(e)

Definition: error.h:43

FALSE

#define FALSE

Definition: windows2linux.h:37

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attribute_deprecated int av_dup_packet(AVPacket *pkt)

Definition: avpacket.c:235

AV_LOG_DEBUG

#define AV_LOG_DEBUG

Stuff which is only useful for libav* developers.

Definition: log.h:197

line

Definition: graph2dot.c:48

AVMEDIA_TYPE_AUDIO

Definition: avutil.h:194

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av_cold int ff_decklink_read_close(AVFormatContext *avctx)

Definition: decklink_dec.cpp:417

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virtual HRESULT STDMETHODCALLTYPE QueryInterface(REFIID iid, LPVOID *ppv)

Definition: decklink_dec.cpp:186

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Definition: decklink_common.h:42

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int flags

A combination of AV_PKT_FLAG values.

Definition: avcodec.h:1473

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AVCodecContext * codec

Codec context associated with this stream.

Definition: avformat.h:896

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AVStream * teletext_st

Definition: decklink_common.h:73

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char filename[1024]

input or output filename

Definition: avformat.h:1390

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Definition: decklink_common.h:33

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Definition: decklink_common.h:35

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static av_always_inline int pthread_mutex_init(pthread_mutex_t *mutex, const pthread_mutexattr_t *attr)

Definition: os2threads.h:98

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Definition: decklink_common.h:59

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int ff_decklink_list_formats(AVFormatContext *avctx, decklink_direction_t direction)

Definition: decklink_common.cpp:200

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#define src

Definition: vp9dsp.c:530

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static int avpacket_queue_put(AVPacketQueue *q, AVPacket *pkt)

Definition: decklink_dec.cpp:110

AVERROR_EXIT

#define AVERROR_EXIT

Immediate exit was requested; the called function should not be restarted.

Definition: error.h:56

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unsigned long frameCount

Definition: decklink_common.h:69

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decklink_ctx * ctx

Definition: decklink_dec.cpp:196

AVStream

Stream structure.

Definition: avformat.h:877

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Definition: decklink_common.h:32

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int audio_channels

Definition: decklink_common_c.h:36

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virtual ULONG STDMETHODCALLTYPE Release(void)

Definition: decklink_dec.cpp:225

decklink_common.h

decklink_input_callback::VideoInputFrameArrived

virtual HRESULT STDMETHODCALLTYPE VideoInputFrameArrived(IDeckLinkVideoInputFrame *, IDeckLinkAudioInputPacket *)

Definition: decklink_dec.cpp:239

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virtual HRESULT STDMETHODCALLTYPE VideoInputFormatChanged(BMDVideoInputFormatChangedEvents, IDeckLinkDisplayMode *, BMDDetectedVideoInputFormatFlags)

Definition: decklink_dec.cpp:398

ff_decklink_list_devices

int ff_decklink_list_devices(AVFormatContext *avctx)

Definition: decklink_common.cpp:180

LPVOID

void * LPVOID

Definition: basicDataTypeConversions.h:19

AVCodecContext

main external API structure.

Definition: avcodec.h:1532

av_packet_unref

void av_packet_unref(AVPacket *pkt)

Wipe the packet.

Definition: avpacket.c:545

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int list_formats

Definition: decklink_common_c.h:32

decklink_input_callback::m_refCount

ULONG m_refCount

Definition: decklink_dec.cpp:193

decklink_start_input

static HRESULT decklink_start_input(AVFormatContext *avctx)

Definition: decklink_dec.cpp:405

buf

void * buf

Definition: avisynth_c.h:553

decklink_cctx::list_devices

int list_devices

Definition: decklink_common_c.h:31

ff_decklink_get_display_name

HRESULT ff_decklink_get_display_name(IDeckLink *This, const char **displayName)

Definition: decklink_common.cpp:90

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BYTE int const BYTE int int int height

Definition: avisynth_c.h:676

avpacket_queue_get

static int avpacket_queue_get(AVPacketQueue *q, AVPacket *pkt, int block)

Definition: decklink_dec.cpp:149

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AVStream * audio_st

Definition: decklink_common.h:71

AVPacketQueue::avctx

AVFormatContext * avctx

Definition: decklink_common.h:39

AV_CODEC_ID_V210

Definition: avcodec.h:234

HRESULT

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Definition: basicDataTypeConversions.h:54

avformat.h

Main libavformat public API header.

avpacket_queue_end

static void avpacket_queue_end(AVPacketQueue *q)

Definition: decklink_dec.cpp:94

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struct AVPacketList * next

Definition: avformat.h:1916

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int64_t initial_video_pts

Definition: decklink_dec.cpp:198

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static unsigned long long avpacket_queue_size(AVPacketQueue *q)

Definition: decklink_dec.cpp:101

static double c[64]

Definition: vsrc_mptestsrc.c:87

ULONG

uint32_t ULONG

Definition: basicDataTypeConversions.h:60

ff_decklink_read_packet

int ff_decklink_read_packet(AVFormatContext *avctx, AVPacket *pkt)

Definition: decklink_dec.cpp:635

AV_CODEC_ID_PCM_S16LE

Definition: avcodec.h:322

pthread_cond_init

static av_always_inline int pthread_cond_init(pthread_cond_t *cond, const pthread_condattr_t *attr)

Definition: os2threads.h:127

av_init_packet

void av_init_packet(AVPacket *pkt)

Initialize optional fields of a packet with default values.

Definition: avpacket.c:33

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int den

denominator

Definition: rational.h:45

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virtual ULONG STDMETHODCALLTYPE AddRef(void)

Definition: decklink_dec.cpp:216

av_free

#define av_free(p)

Definition: tableprint_vlc.h:34

AVFrame::top_field_first

int top_field_first

If the content is interlaced, is top field displayed first.

Definition: frame.h:317

AVCodecContext::channels

int channels

number of audio channels

Definition: avcodec.h:2288

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static av_always_inline int pthread_mutex_unlock(pthread_mutex_t *mutex)

Definition: os2threads.h:120

AVFormatContext::priv_data

void * priv_data

Format private data.

Definition: avformat.h:1342

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av_cold int ff_decklink_read_header(AVFormatContext *avctx)

Definition: decklink_dec.cpp:440

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Decompression timestamp in AVStream->time_base units; the time at which the packet is decompressed...

Definition: avcodec.h:1466

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int frame_number

Frame counter, set by libavcodec.

Definition: avcodec.h:2318

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#define av_freep(p)

Definition: tableprint_vlc.h:35

AVMEDIA_TYPE_VIDEO

Definition: avutil.h:193

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static av_always_inline int pthread_mutex_lock(pthread_mutex_t *mutex)

Definition: os2threads.h:113

AV_CODEC_ID_RAWVIDEO

Definition: avcodec.h:120

AVPacket::stream_index

int stream_index

Definition: avcodec.h:1469

AVStream::time_base

AVRational time_base

This is the fundamental unit of time (in seconds) in terms of which frame timestamps are represented...

Definition: avformat.h:919

AVMEDIA_TYPE_SUBTITLE

Definition: avutil.h:196

MKTAG

#define MKTAG(a, b, c, d)

Definition: common.h:342

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int64_t teletext_lines

Definition: decklink_common_c.h:33

AVPacket

This structure stores compressed data.

Definition: avcodec.h:1444

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void * av_mallocz(size_t size)

Allocate a block of size bytes with alignment suitable for all memory accesses (including vectors if ...

Definition: mem.c:252

decklink_input_callback

Definition: decklink_dec.cpp:180

AVPacket::pts

int64_t pts

Presentation timestamp in AVStream->time_base units; the time at which the decompressed packet will b...

Definition: avcodec.h:1460

AV_NOPTS_VALUE

#define AV_NOPTS_VALUE

Undefined timestamp value.

Definition: avutil.h:240

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static int width

Definition: demuxing_decoding.c:39

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double preroll

Definition: decklink_common_c.h:34

block

static int16_t block[64]

Definition: dct-test.c:112

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