FFmpeg: libavdevice/decklink_dec.cpp Source File

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libavdevice

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 "libavformat/avformat.h"

29 #include "libavformat/internal.h"

30 #include "libavutil/imgutils.h"

31 }

33 #include "decklink_common.h"

34 #include "decklink_dec.h"

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

37 {

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

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

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

41 q->avctx = avctx;

42 }

44 static void avpacket_queue_flush(AVPacketQueue *q)

45 {

46 AVPacketList *pkt, *pkt1;

48 pthread_mutex_lock(&q->mutex);

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

50 pkt1 = pkt->next;

51 av_free_packet(&pkt->pkt);

52 av_freep(&pkt);

53 }

54 q->last_pkt = NULL;

55 q->first_pkt = NULL;

56 q->nb_packets = 0;

57 q->size = 0;

58 pthread_mutex_unlock(&q->mutex);

59 }

61 static void avpacket_queue_end(AVPacketQueue *q)

62 {

63 avpacket_queue_flush(q);

64 pthread_mutex_destroy(&q->mutex);

65 pthread_cond_destroy(&q->cond);

66 }

68 static unsigned long long avpacket_queue_size(AVPacketQueue *q)

69 {

70 unsigned long long size;

71 pthread_mutex_lock(&q->mutex);

72 size = q->size;

73 pthread_mutex_unlock(&q->mutex);

74 return size;

75 }

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

78 {

79 AVPacketList *pkt1;

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

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

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

84 return -1;

85 }

86 /* duplicate the packet */

87 if (av_dup_packet(pkt) < 0) {

88 return -1;

89 }

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

92 if (!pkt1) {

93 return -1;

94 }

95 pkt1->pkt = *pkt;

96 pkt1->next = NULL;

98 pthread_mutex_lock(&q->mutex);

100 if (!q->last_pkt) {

101 q->first_pkt = pkt1;

102 } else {

103 q->last_pkt->next = pkt1;

104 }

105

106 q->last_pkt = pkt1;

107 q->nb_packets++;

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

109

110 pthread_cond_signal(&q->cond);

111

112 pthread_mutex_unlock(&q->mutex);

113 return 0;

114 }

115

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

117 {

118 AVPacketList *pkt1;

119 int ret;

120

121 pthread_mutex_lock(&q->mutex);

122

123 for (;; ) {

124 pkt1 = q->first_pkt;

125 if (pkt1) {

126 q->first_pkt = pkt1->next;

127 if (!q->first_pkt) {

128 q->last_pkt = NULL;

129 }

130 q->nb_packets--;

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

132 *pkt = pkt1->pkt;

133 av_free(pkt1);

134 ret = 1;

135 break;

136 } else if (!block) {

137 ret = 0;

138 break;

139 } else {

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

141 }

142 }

143 pthread_mutex_unlock(&q->mutex);

144 return ret;

145 }

146

147 class decklink_input_callback : public IDeckLinkInputCallback

148 {

149 public:

150 decklink_input_callback(AVFormatContext *_avctx);

151 ~decklink_input_callback();

152

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

154 virtual ULONG STDMETHODCALLTYPE AddRef(void);

155 virtual ULONG STDMETHODCALLTYPE Release(void);

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

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

158

159 private:

160 ULONG m_refCount;

161 pthread_mutex_t m_mutex;

162 AVFormatContext *avctx;

163 decklink_ctx *ctx;

164 int no_video;

165 int64_t initial_video_pts;

166 int64_t initial_audio_pts;

167 };

168

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

170 {

171 avctx = _avctx;

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

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

174 initial_audio_pts = initial_video_pts = AV_NOPTS_VALUE;

175 pthread_mutex_init(&m_mutex, NULL);

176 }

177

178 decklink_input_callback::~decklink_input_callback()

179 {

180 pthread_mutex_destroy(&m_mutex);

181 }

182

183 ULONG decklink_input_callback::AddRef(void)

184 {

185 pthread_mutex_lock(&m_mutex);

186 m_refCount++;

187 pthread_mutex_unlock(&m_mutex);

188

189 return (ULONG)m_refCount;

190 }

191

192 ULONG decklink_input_callback::Release(void)

193 {

194 pthread_mutex_lock(&m_mutex);

195 m_refCount--;

196 pthread_mutex_unlock(&m_mutex);

197

198 if (m_refCount == 0) {

199 delete this;

200 return 0;

201 }

202

203 return (ULONG)m_refCount;

204 }

205

206 HRESULT decklink_input_callback::VideoInputFrameArrived(

207 IDeckLinkVideoInputFrame *videoFrame, IDeckLinkAudioInputPacket *audioFrame)

208 {

209 void *frameBytes;

210 void *audioFrameBytes;

211 BMDTimeValue frameTime;

212 BMDTimeValue frameDuration;

213

214 ctx->frameCount++;

215

216 // Handle Video Frame

217 if (videoFrame) {

218 AVPacket pkt;

219 AVCodecContext *c;

220 av_init_packet(&pkt);

221 c = ctx->video_st->codec;

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

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

224 av_log(avctx, AV_LOG_DEBUG,

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

226 ctx->frameCount,

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

228 (double)qsize / 1024 / 1024);

229 }

230

231 videoFrame->GetBytes(&frameBytes);

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

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

234

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

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

237 unsigned bars[8] = {

238 0xEA80EA80, 0xD292D210, 0xA910A9A5, 0x90229035,

239 0x6ADD6ACA, 0x51EF515A, 0x286D28EF, 0x10801080 };

240 int width = videoFrame->GetWidth();

241 int height = videoFrame->GetHeight();

242 unsigned *p = (unsigned *)frameBytes;

243

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

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

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

247 }

248 }

249

250 if (!no_video) {

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

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

253 }

254 no_video = 1;

255 } else {

256 if (no_video) {

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

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

259 }

260 no_video = 0;

261 }

262

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

264

265 if (initial_video_pts == AV_NOPTS_VALUE) {

266 initial_video_pts = pkt.pts;

267 }

268

269 pkt.pts -= initial_video_pts;

270 pkt.dts = pkt.pts;

271

272 pkt.duration = frameDuration;

273 //To be made sure it still applies

274 pkt.flags |= AV_PKT_FLAG_KEY;

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

276 pkt.data = (uint8_t *)frameBytes;

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

278 videoFrame->GetHeight();

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

280 c->frame_number++;

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

282 ++ctx->dropped;

283 }

284 }

285

286 // Handle Audio Frame

287 if (audioFrame) {

288 AVCodecContext *c;

289 AVPacket pkt;

290 BMDTimeValue audio_pts;

291 av_init_packet(&pkt);

292

293 c = ctx->audio_st->codec;

294 //hack among hacks

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

296 audioFrame->GetBytes(&audioFrameBytes);

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

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

299

300 if (initial_audio_pts == AV_NOPTS_VALUE) {

301 initial_audio_pts = pkt.pts;

302 }

303

304 pkt.pts -= initial_audio_pts;

305 pkt.dts = pkt.pts;

306

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

308 pkt.flags |= AV_PKT_FLAG_KEY;

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

310 pkt.data = (uint8_t *)audioFrameBytes;

311

312 c->frame_number++;

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

314 ++ctx->dropped;

315 }

316 }

317

318 return S_OK;

319 }

320

321 HRESULT decklink_input_callback::VideoInputFormatChanged(

322 BMDVideoInputFormatChangedEvents events, IDeckLinkDisplayMode *mode,

323 BMDDetectedVideoInputFormatFlags)

324 {

325 return S_OK;

326 }

327

328 static HRESULT decklink_start_input(AVFormatContext *avctx)

329 {

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

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

332

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

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

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

336 }

337

338 extern "C" {

339

340 av_cold int ff_decklink_read_close(AVFormatContext *avctx)

341 {

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

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

344

345 if (ctx->capture_started) {

346 ctx->dli->StopStreams();

347 ctx->dli->DisableVideoInput();

348 ctx->dli->DisableAudioInput();

349 }

350

351 if (ctx->dli)

352 ctx->dli->Release();

353 if (ctx->dl)

354 ctx->dl->Release();

355

356 avpacket_queue_end(&ctx->queue);

357

358 av_freep(&cctx->ctx);

359

360 return 0;

361 }

362

363 av_cold int ff_decklink_read_header(AVFormatContext *avctx)

364 {

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

366 struct decklink_ctx *ctx;

367 IDeckLinkDisplayModeIterator *itermode;

368 IDeckLinkIterator *iter;

369 IDeckLink *dl = NULL;

370 AVStream *st;

371 HRESULT result;

372 char fname[1024];

373 char *tmp;

374 int mode_num = 0;

375

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

377 if (!ctx)

378 return AVERROR(ENOMEM);

379 ctx->list_devices = cctx->list_devices;

380 ctx->list_formats = cctx->list_formats;

381 ctx->preroll = cctx->preroll;

382 cctx->ctx = ctx;

383

384 iter = CreateDeckLinkIteratorInstance();

385 if (!iter) {

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

387 return AVERROR(EIO);

388 }

389

390 /* List available devices. */

391 if (ctx->list_devices) {

392 ff_decklink_list_devices(avctx);

393 return AVERROR_EXIT;

394 }

395

396 strcpy (fname, avctx->filename);

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

398 if (tmp != NULL) {

399 mode_num = atoi (tmp+1);

400 *tmp = 0;

401 }

402

403 /* Open device. */

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

405 const char *displayName;

406 ff_decklink_get_display_name(dl, &displayName);

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

408 av_free((void *) displayName);

409 ctx->dl = dl;

410 break;

411 }

412 av_free((void *) displayName);

413 dl->Release();

414 }

415 iter->Release();

416 if (!ctx->dl) {

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

418 return AVERROR(EIO);

419 }

420

421 /* Get input device. */

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

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

424 avctx->filename);

425 ctx->dl->Release();

426 return AVERROR(EIO);

427 }

428

429 /* List supported formats. */

430 if (ctx->list_formats) {

431 ff_decklink_list_formats(avctx, DIRECTION_IN);

432 ctx->dli->Release();

433 ctx->dl->Release();

434 return AVERROR_EXIT;

435 }

436

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

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

439 ctx->dl->Release();

440 return AVERROR(EIO);

441 }

442

443 if (mode_num > 0) {

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

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

446 goto error;

447 }

448 }

449

450 itermode->Release();

451

452 /* Setup streams. */

453 st = avformat_new_stream(avctx, NULL);

454 if (!st) {

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

456 goto error;

457 }

458 st->codec->codec_type = AVMEDIA_TYPE_AUDIO;

459 st->codec->codec_id = AV_CODEC_ID_PCM_S16LE;

460 st->codec->sample_rate = bmdAudioSampleRate48kHz;

461 st->codec->channels = 2;

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

463 ctx->audio_st=st;

464

465 st = avformat_new_stream(avctx, NULL);

466 if (!st) {

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

468 goto error;

469 }

470 st->codec->codec_type = AVMEDIA_TYPE_VIDEO;

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

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

473

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

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

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

477

478 if (cctx->v210) {

479 st->codec->codec_id = AV_CODEC_ID_V210;

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

481 } else {

482 st->codec->codec_id = AV_CODEC_ID_RAWVIDEO;

483 st->codec->pix_fmt = AV_PIX_FMT_UYVY422;

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

485 }

486

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

488

489 ctx->video_st=st;

490

491 result = ctx->dli->EnableAudioInput(bmdAudioSampleRate48kHz, bmdAudioSampleType16bitInteger, 2);

492

493 if (result != S_OK) {

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

495 goto error;

496 }

497

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

499 cctx->v210 ? bmdFormat10BitYUV : bmdFormat8BitYUV,

500 bmdVideoInputFlagDefault);

501

502 if (result != S_OK) {

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

504 goto error;

505 }

506

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

508

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

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

511 goto error;

512 }

513

514 return 0;

515

516 error:

517

518 ctx->dli->Release();

519 ctx->dl->Release();

520

521 return AVERROR(EIO);

522 }

523

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

525 {

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

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

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

529

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

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

532 frame->interlaced_frame = 1;

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

534 frame->top_field_first = 1;

535 }

536 }

537

538 return 0;

539 }

540

541 } /* 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:25

pthread_mutex_destroy

static av_always_inline int pthread_mutex_destroy(pthread_mutex_t *mutex)

Definition: os2threads.h:94

S_OK

#define S_OK

Definition: windows2linux.h:40

av_free_packet

void av_free_packet(AVPacket *pkt)

Free a packet.

Definition: avpacket.c:280

AVFrame

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

Definition: frame.h:171

decklink_cctx::v210

int v210

Definition: decklink_common_c.h:31

decklink_input_callback::avctx

AVFormatContext * avctx

Definition: decklink_dec.cpp:162

pthread_cond_wait

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

Definition: os2threads.h:153

decklink_input_callback::~decklink_input_callback

~decklink_input_callback()

Definition: decklink_dec.cpp:178

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:4006

AVRational::num

int num

numerator

Definition: rational.h:44

AVStream::index

int index

stream index in AVFormatContext

Definition: avformat.h:843

decklink_input_callback::initial_audio_pts

int64_t initial_audio_pts

Definition: decklink_dec.cpp:166

AVPacket::size

int size

Definition: avcodec.h:1163

GUID

Definition: basicDataTypeConversions.h:70

avpacket_queue_init

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

Definition: decklink_dec.cpp:36

decklink_dec.h

pkt

static AVPacket pkt

Definition: demuxing_decoding.c:54

av_dup_packet

int av_dup_packet(AVPacket *pkt)

Definition: avpacket.c:248

AVPacketQueue::cond

pthread_cond_t cond

Definition: decklink_common.h:33

pthread_cond_destroy

static av_always_inline int pthread_cond_destroy(pthread_cond_t *cond)

Definition: os2threads.h:124

AVFormatContext

Format I/O context.

Definition: avformat.h:1272

AVPacketQueue::nb_packets

int nb_packets

Definition: decklink_common.h:29

decklink_ctx::dropped

unsigned int dropped

Definition: decklink_common.h:65

decklink_input_callback::m_mutex

pthread_mutex_t m_mutex

Definition: decklink_dec.cpp:161

pthread_mutex_t

HMTX pthread_mutex_t

Definition: os2threads.h:40

decklink_input_callback::decklink_input_callback

decklink_input_callback(AVFormatContext *_avctx)

Definition: decklink_dec.cpp:169

uint8_t

Definition: audio_convert.c:194

DIRECTION_IN

Definition: decklink_common.h:82

av_cold

#define av_cold

Definition: attributes.h:74

av_malloc

#define av_malloc(s)

Definition: tableprint_vlc.h:31

AVPacketQueue::mutex

pthread_mutex_t mutex

Definition: decklink_common.h:32

mode

Definition: f_perms.c:27

decklink_cctx

Definition: decklink_common_c.h:22

AVPacketList::pkt

AVPacket pkt

Definition: avformat.h:1845

avformat_new_stream

AVStream * avformat_new_stream(AVFormatContext *s, const AVCodec *c)

Add a new stream to a media file.

Definition: utils.c:3672

frame

static AVFrame * frame

Definition: demuxing_decoding.c:53

av_q2d

static double av_q2d(AVRational a)

Convert rational to double.

Definition: rational.h:80

AVPacket::data

uint8_t * data

Definition: avcodec.h:1162

AVPacketList

Definition: avformat.h:1844

decklink_input_callback::no_video

int no_video

Definition: decklink_dec.cpp:164

pthread_cond_signal

static av_always_inline int pthread_cond_signal(pthread_cond_t *cond)

Definition: os2threads.h:131

AVFrame::interlaced_frame

int interlaced_frame

The content of the picture is interlaced.

Definition: frame.h:367

size

ptrdiff_t size

Definition: opengl_enc.c:101

E_NOINTERFACE

#define E_NOINTERFACE

Definition: windows2linux.h:42

AVPacket::duration

int duration

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

Definition: avcodec.h:1180

ff_decklink_set_format

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

av_log

#define av_log(a,...)

Definition: tableprint_vlc.h:28

decklink_ctx::video_st

AVStream * video_st

Definition: decklink_common.h:67

AV_PKT_FLAG_KEY

#define AV_PKT_FLAG_KEY

The packet contains a keyframe.

Definition: avcodec.h:1208

avpacket_queue_flush

static void avpacket_queue_flush(AVPacketQueue *q)

Definition: decklink_dec.cpp:44

AV_LOG_ERROR

#define AV_LOG_ERROR

Something went wrong and cannot losslessly be recovered.

Definition: log.h:176

AVPacketQueue::last_pkt

AVPacketList * last_pkt

Definition: decklink_common.h:28

AVERROR

#define AVERROR(e)

Definition: error.h:43

AV_LOG_DEBUG

#define AV_LOG_DEBUG

Stuff which is only useful for libav* developers.

Definition: log.h:197

AVMEDIA_TYPE_AUDIO

Definition: avutil.h:195

internal.h

ff_decklink_read_close

av_cold int ff_decklink_read_close(AVFormatContext *avctx)

Definition: decklink_dec.cpp:340

decklink_input_callback::QueryInterface

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

Definition: decklink_dec.cpp:153

decklink_ctx

Definition: decklink_common.h:37

AVPacket::flags

int flags

A combination of AV_PKT_FLAG values.

Definition: avcodec.h:1168

AVStream::codec

AVCodecContext * codec

Codec context associated with this stream.

Definition: avformat.h:861

AVFormatContext::filename

char filename[1024]

input or output filename

Definition: avformat.h:1348

float y

Definition: avf_showspectrum.c:96

AVPacketQueue::first_pkt

AVPacketList * first_pkt

Definition: decklink_common.h:28

AVPacketQueue::size

unsigned long long size

Definition: decklink_common.h:30

ret

Definition: avfilter.c:974

pthread_mutex_init

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

Definition: os2threads.h:87

decklink_ctx::queue

AVPacketQueue queue

Definition: decklink_common.h:54

ff_decklink_list_formats

int ff_decklink_list_formats(AVFormatContext *avctx, decklink_direction_t direction)

Definition: decklink_common.cpp:200

avpacket_queue_put

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

Definition: decklink_dec.cpp:77

AVERROR_EXIT

#define AVERROR_EXIT

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

Definition: error.h:56

decklink_ctx::frameCount

unsigned long frameCount

Definition: decklink_common.h:64

decklink_input_callback::ctx

decklink_ctx * ctx

Definition: decklink_dec.cpp:163

AVStream

Stream structure.

Definition: avformat.h:842

AVPacketQueue

Definition: decklink_common.h:27

decklink_input_callback::Release

virtual ULONG STDMETHODCALLTYPE Release(void)

Definition: decklink_dec.cpp:192

decklink_common.h

decklink_input_callback::VideoInputFrameArrived

virtual HRESULT STDMETHODCALLTYPE VideoInputFrameArrived(IDeckLinkVideoInputFrame *, IDeckLinkAudioInputPacket *)

Definition: decklink_dec.cpp:206

decklink_input_callback::VideoInputFormatChanged

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

Definition: decklink_dec.cpp:321

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:1241

decklink_cctx::list_formats

int list_formats

Definition: decklink_common_c.h:29

decklink_input_callback::m_refCount

ULONG m_refCount

Definition: decklink_dec.cpp:160

decklink_start_input

static HRESULT decklink_start_input(AVFormatContext *avctx)

Definition: decklink_dec.cpp:328

decklink_cctx::list_devices

int list_devices

Definition: decklink_common_c.h:28

ff_decklink_get_display_name

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

Definition: decklink_common.cpp:90

height

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:116

decklink_ctx::audio_st

AVStream * audio_st

Definition: decklink_common.h:66

AVPacketQueue::avctx

AVFormatContext * avctx

Definition: decklink_common.h:34

AV_CODEC_ID_V210

Definition: avcodec.h:235

HRESULT

DWORD HRESULT

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:61

AVPacketList::next

struct AVPacketList * next

Definition: avformat.h:1846

decklink_input_callback::initial_video_pts

int64_t initial_video_pts

Definition: decklink_dec.cpp:165

avpacket_queue_size

static unsigned long long avpacket_queue_size(AVPacketQueue *q)

Definition: decklink_dec.cpp:68

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:524

AV_CODEC_ID_PCM_S16LE

Definition: avcodec.h:329

pthread_cond_init

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

Definition: os2threads.h:115

av_init_packet

void av_init_packet(AVPacket *pkt)

Initialize optional fields of a packet with default values.

Definition: avpacket.c:49

AVRational::den

int den

denominator

Definition: rational.h:45

decklink_input_callback::AddRef

virtual ULONG STDMETHODCALLTYPE AddRef(void)

Definition: decklink_dec.cpp:183

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:372

AVCodecContext::channels

int channels

number of audio channels

Definition: avcodec.h:1986

pthread_mutex_unlock

static av_always_inline int pthread_mutex_unlock(pthread_mutex_t *mutex)

Definition: os2threads.h:108

AVFormatContext::priv_data

void * priv_data

Format private data.

Definition: avformat.h:1300

avpicture_get_size

int avpicture_get_size(enum AVPixelFormat pix_fmt, int width, int height)

Calculate the size in bytes that a picture of the given width and height would occupy if stored in th...

Definition: avpicture.c:49

ff_decklink_read_header

av_cold int ff_decklink_read_header(AVFormatContext *avctx)

Definition: decklink_dec.cpp:363

AVPacket::dts

int64_t dts

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

Definition: avcodec.h:1161

AVCodecContext::frame_number

int frame_number

Frame counter, set by libavcodec.

Definition: avcodec.h:2016

av_freep

#define av_freep(p)

Definition: tableprint_vlc.h:35

AVMEDIA_TYPE_VIDEO

Definition: avutil.h:194

pthread_mutex_lock

static av_always_inline int pthread_mutex_lock(pthread_mutex_t *mutex)

Definition: os2threads.h:101

AV_CODEC_ID_RAWVIDEO

Definition: avcodec.h:121

AVPacket::stream_index

int stream_index

Definition: avcodec.h:1164

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:884

MKTAG

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

Definition: common.h:315

AVPacket

This structure stores compressed data.

Definition: avcodec.h:1139

av_mallocz

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:250

decklink_input_callback

Definition: decklink_dec.cpp:147

AVPacket::pts

int64_t pts

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

Definition: avcodec.h:1155

AV_NOPTS_VALUE

#define AV_NOPTS_VALUE

Undefined timestamp value.

Definition: avutil.h:241

width

static int width

Definition: demuxing_decoding.c:39

decklink_cctx::preroll

double preroll

Definition: decklink_common_c.h:30

block

static int16_t block[64]

Definition: dct-test.c:110

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