1/* 2 * Blackmagic DeckLink input 3 * Copyright (c) 2013-2014 Luca Barbato, Deti Fliegl 4 * Copyright (c) 2014 Rafaël Carré 5 * Copyright (c) 2017 Akamai Technologies, Inc. 6 * 7 * This file is part of FFmpeg. 8 * 9 * FFmpeg is free software; you can redistribute it and/or 10 * modify it under the terms of the GNU Lesser General Public 11 * License as published by the Free Software Foundation; either 12 * version 2.1 of the License, or (at your option) any later version. 13 * 14 * FFmpeg is distributed in the hope that it will be useful, 15 * but WITHOUT ANY WARRANTY; without even the implied warranty of 16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 17 * Lesser General Public License for more details. 18 * 19 * You should have received a copy of the GNU Lesser General Public 20 * License along with FFmpeg; if not, write to the Free Software 21 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA 22 */ 23 24#include <atomic> 25#include <vector> 26using std::atomic; 27 28/* Include internal.h first to avoid conflict between winsock.h (used by 29 * DeckLink headers) and winsock2.h (used by libavformat) in MSVC++ builds */ 30extern "C" { 31#include "libavformat/internal.h" 32} 33 34#include <DeckLinkAPI.h> 35 36extern "C" { 37#include "config.h" 38#include "libavcodec/packet_internal.h" 39#include "libavformat/avformat.h" 40#include "libavutil/avassert.h" 41#include "libavutil/avutil.h" 42#include "libavutil/common.h" 43#include "libavutil/internal.h" 44#include "libavutil/imgutils.h" 45#include "libavutil/intreadwrite.h" 46#include "libavutil/time.h" 47#include "libavutil/timecode.h" 48#include "libavutil/mathematics.h" 49#include "libavutil/reverse.h" 50#include "avdevice.h" 51#if CONFIG_LIBZVBI 52#include <libzvbi.h> 53#endif 54} 55 56#include "decklink_common.h" 57#include "decklink_dec.h" 58 59#define MAX_WIDTH_VANC 1920 60const BMDDisplayMode AUTODETECT_DEFAULT_MODE = bmdModeNTSC; 61 62typedef struct VANCLineNumber { 63 BMDDisplayMode mode; 64 int vanc_start; 65 int field0_vanc_end; 66 int field1_vanc_start; 67 int vanc_end; 68} VANCLineNumber; 69 70/* These VANC line numbers need not be very accurate. In any case 71 * GetBufferForVerticalBlankingLine() will return an error when invalid 72 * ancillary line number was requested. We just need to make sure that the 73 * entire VANC region is covered, while making sure we don't decode VANC of 74 * another source during switching*/ 75static VANCLineNumber vanc_line_numbers[] = { 76 /* SD Modes */ 77 78 {bmdModeNTSC, 11, 19, 274, 282}, 79 {bmdModeNTSC2398, 11, 19, 274, 282}, 80 {bmdModePAL, 7, 22, 320, 335}, 81 {bmdModeNTSCp, 11, -1, -1, 39}, 82 {bmdModePALp, 7, -1, -1, 45}, 83 84 /* HD 1080 Modes */ 85 86 {bmdModeHD1080p2398, 8, -1, -1, 42}, 87 {bmdModeHD1080p24, 8, -1, -1, 42}, 88 {bmdModeHD1080p25, 8, -1, -1, 42}, 89 {bmdModeHD1080p2997, 8, -1, -1, 42}, 90 {bmdModeHD1080p30, 8, -1, -1, 42}, 91 {bmdModeHD1080i50, 8, 20, 570, 585}, 92 {bmdModeHD1080i5994, 8, 20, 570, 585}, 93 {bmdModeHD1080i6000, 8, 20, 570, 585}, 94 {bmdModeHD1080p50, 8, -1, -1, 42}, 95 {bmdModeHD1080p5994, 8, -1, -1, 42}, 96 {bmdModeHD1080p6000, 8, -1, -1, 42}, 97 98 /* HD 720 Modes */ 99 100 {bmdModeHD720p50, 8, -1, -1, 26}, 101 {bmdModeHD720p5994, 8, -1, -1, 26}, 102 {bmdModeHD720p60, 8, -1, -1, 26}, 103 104 /* For all other modes, for which we don't support VANC */ 105 {bmdModeUnknown, 0, -1, -1, -1} 106}; 107 108class decklink_allocator : public IDeckLinkMemoryAllocator 109{ 110public: 111 decklink_allocator(): _refs(1) { } 112 virtual ~decklink_allocator() { } 113 114 // IDeckLinkMemoryAllocator methods 115 virtual HRESULT STDMETHODCALLTYPE AllocateBuffer(unsigned int bufferSize, void* *allocatedBuffer) 116 { 117 void *buf = av_malloc(bufferSize + AV_INPUT_BUFFER_PADDING_SIZE); 118 if (!buf) 119 return E_OUTOFMEMORY; 120 *allocatedBuffer = buf; 121 return S_OK; 122 } 123 virtual HRESULT STDMETHODCALLTYPE ReleaseBuffer(void* buffer) 124 { 125 av_free(buffer); 126 return S_OK; 127 } 128 virtual HRESULT STDMETHODCALLTYPE Commit() { return S_OK; } 129 virtual HRESULT STDMETHODCALLTYPE Decommit() { return S_OK; } 130 131 // IUnknown methods 132 virtual HRESULT STDMETHODCALLTYPE QueryInterface(REFIID iid, LPVOID *ppv) { return E_NOINTERFACE; } 133 virtual ULONG STDMETHODCALLTYPE AddRef(void) { return ++_refs; } 134 virtual ULONG STDMETHODCALLTYPE Release(void) 135 { 136 int ret = --_refs; 137 if (!ret) 138 delete this; 139 return ret; 140 } 141 142private: 143 std::atomic<int> _refs; 144}; 145 146extern "C" { 147static void decklink_object_free(void *opaque, uint8_t *data) 148{ 149 IUnknown *obj = (class IUnknown *)opaque; 150 obj->Release(); 151} 152} 153 154static int get_vanc_line_idx(BMDDisplayMode mode) 155{ 156 unsigned int i; 157 for (i = 0; i < FF_ARRAY_ELEMS(vanc_line_numbers); i++) { 158 if (mode == vanc_line_numbers[i].mode) 159 return i; 160 } 161 /* Return the VANC idx for Unknown mode */ 162 return i - 1; 163} 164 165static inline void clear_parity_bits(uint16_t *buf, int len) { 166 int i; 167 for (i = 0; i < len; i++) 168 buf[i] &= 0xff; 169} 170 171static int check_vanc_parity_checksum(uint16_t *buf, int len, uint16_t checksum) { 172 int i; 173 uint16_t vanc_sum = 0; 174 for (i = 3; i < len - 1; i++) { 175 uint16_t v = buf[i]; 176 int np = v >> 8; 177 int p = av_parity(v & 0xff); 178 if ((!!p ^ !!(v & 0x100)) || (np != 1 && np != 2)) { 179 // Parity check failed 180 return -1; 181 } 182 vanc_sum += v; 183 } 184 vanc_sum &= 0x1ff; 185 vanc_sum |= ((~vanc_sum & 0x100) << 1); 186 if (checksum != vanc_sum) { 187 // Checksum verification failed 188 return -1; 189 } 190 return 0; 191} 192 193/* The 10-bit VANC data is packed in V210, we only need the luma component. */ 194static void extract_luma_from_v210(uint16_t *dst, const uint8_t *src, int width) 195{ 196 int i; 197 for (i = 0; i < width / 3; i++) { 198 *dst++ = (src[1] >> 2) + ((src[2] & 15) << 6); 199 *dst++ = src[4] + ((src[5] & 3) << 8); 200 *dst++ = (src[6] >> 4) + ((src[7] & 63) << 4); 201 src += 8; 202 } 203} 204 205static void unpack_v210(uint16_t *dst, const uint8_t *src, int width) 206{ 207 int i; 208 for (i = 0; i < width * 2 / 3; i++) { 209 *dst++ = src[0] + ((src[1] & 3) << 8); 210 *dst++ = (src[1] >> 2) + ((src[2] & 15) << 6); 211 *dst++ = (src[2] >> 4) + ((src[3] & 63) << 4); 212 src += 4; 213 } 214} 215 216static uint8_t calc_parity_and_line_offset(int line) 217{ 218 uint8_t ret = (line < 313) << 5; 219 if (line >= 7 && line <= 22) 220 ret += line; 221 if (line >= 320 && line <= 335) 222 ret += (line - 313); 223 return ret; 224} 225 226static void fill_data_unit_head(int line, uint8_t *tgt) 227{ 228 tgt[0] = 0x02; // data_unit_id 229 tgt[1] = 0x2c; // data_unit_length 230 tgt[2] = calc_parity_and_line_offset(line); // field_parity, line_offset 231 tgt[3] = 0xe4; // framing code 232} 233 234#if CONFIG_LIBZVBI 235static uint8_t* teletext_data_unit_from_vbi_data(int line, uint8_t *src, uint8_t *tgt, vbi_pixfmt fmt) 236{ 237 vbi_bit_slicer slicer; 238 239 vbi_bit_slicer_init(&slicer, 720, 13500000, 6937500, 6937500, 0x00aaaae4, 0xffff, 18, 6, 42 * 8, VBI_MODULATION_NRZ_MSB, fmt); 240 241 if (vbi_bit_slice(&slicer, src, tgt + 4) == FALSE) 242 return tgt; 243 244 fill_data_unit_head(line, tgt); 245 246 return tgt + 46; 247} 248 249static uint8_t* teletext_data_unit_from_vbi_data_10bit(int line, uint8_t *src, uint8_t *tgt) 250{ 251 uint8_t y[720]; 252 uint8_t *py = y; 253 uint8_t *pend = y + 720; 254 /* The 10-bit VBI data is packed in V210, but libzvbi only supports 8-bit, 255 * so we extract the 8 MSBs of the luma component, that is enough for 256 * teletext bit slicing. */ 257 while (py < pend) { 258 *py++ = (src[1] >> 4) + ((src[2] & 15) << 4); 259 *py++ = (src[4] >> 2) + ((src[5] & 3 ) << 6); 260 *py++ = (src[6] >> 6) + ((src[7] & 63) << 2); 261 src += 8; 262 } 263 return teletext_data_unit_from_vbi_data(line, y, tgt, VBI_PIXFMT_YUV420); 264} 265#endif 266 267static uint8_t* teletext_data_unit_from_op47_vbi_packet(int line, uint16_t *py, uint8_t *tgt) 268{ 269 int i; 270 271 if (py[0] != 0x255 || py[1] != 0x255 || py[2] != 0x227) 272 return tgt; 273 274 fill_data_unit_head(line, tgt); 275 276 py += 3; 277 tgt += 4; 278 279 for (i = 0; i < 42; i++) 280 *tgt++ = ff_reverse[py[i] & 255]; 281 282 return tgt; 283} 284 285static int linemask_matches(int line, int64_t mask) 286{ 287 int shift = -1; 288 if (line >= 6 && line <= 22) 289 shift = line - 6; 290 if (line >= 318 && line <= 335) 291 shift = line - 318 + 17; 292 return shift >= 0 && ((1ULL << shift) & mask); 293} 294 295static uint8_t* teletext_data_unit_from_op47_data(uint16_t *py, uint16_t *pend, uint8_t *tgt, int64_t wanted_lines) 296{ 297 if (py < pend - 9) { 298 if (py[0] == 0x151 && py[1] == 0x115 && py[3] == 0x102) { // identifier, identifier, format code for WST teletext 299 uint16_t *descriptors = py + 4; 300 int i; 301 py += 9; 302 for (i = 0; i < 5 && py < pend - 45; i++, py += 45) { 303 int line = (descriptors[i] & 31) + (!(descriptors[i] & 128)) * 313; 304 if (line && linemask_matches(line, wanted_lines)) 305 tgt = teletext_data_unit_from_op47_vbi_packet(line, py, tgt); 306 } 307 } 308 } 309 return tgt; 310} 311 312static uint8_t* teletext_data_unit_from_ancillary_packet(uint16_t *py, uint16_t *pend, uint8_t *tgt, int64_t wanted_lines, int allow_multipacket) 313{ 314 uint16_t did = py[0]; // data id 315 uint16_t sdid = py[1]; // secondary data id 316 uint16_t dc = py[2] & 255; // data count 317 py += 3; 318 pend = FFMIN(pend, py + dc); 319 if (did == 0x143 && sdid == 0x102) { // subtitle distribution packet 320 tgt = teletext_data_unit_from_op47_data(py, pend, tgt, wanted_lines); 321 } else if (allow_multipacket && did == 0x143 && sdid == 0x203) { // VANC multipacket 322 py += 2; // priority, line/field 323 while (py < pend - 3) { 324 tgt = teletext_data_unit_from_ancillary_packet(py, pend, tgt, wanted_lines, 0); 325 py += 4 + (py[2] & 255); // ndid, nsdid, ndc, line/field 326 } 327 } 328 return tgt; 329} 330 331static uint8_t *vanc_to_cc(AVFormatContext *avctx, uint16_t *buf, size_t words, 332 unsigned &cc_count) 333{ 334 size_t i, len = (buf[5] & 0xff) + 6 + 1; 335 uint8_t cdp_sum, rate; 336 uint16_t hdr, ftr; 337 uint8_t *cc; 338 uint16_t *cdp = &buf[6]; // CDP follows 339 if (cdp[0] != 0x96 || cdp[1] != 0x69) { 340 av_log(avctx, AV_LOG_WARNING, "Invalid CDP header 0x%.2x 0x%.2x\n", cdp[0], cdp[1]); 341 return NULL; 342 } 343 344 len -= 7; // remove VANC header and checksum 345 346 if (cdp[2] != len) { 347 av_log(avctx, AV_LOG_WARNING, "CDP len %d != %zu\n", cdp[2], len); 348 return NULL; 349 } 350 351 cdp_sum = 0; 352 for (i = 0; i < len - 1; i++) 353 cdp_sum += cdp[i]; 354 cdp_sum = cdp_sum ? 256 - cdp_sum : 0; 355 if (cdp[len - 1] != cdp_sum) { 356 av_log(avctx, AV_LOG_WARNING, "CDP checksum invalid 0x%.4x != 0x%.4x\n", cdp_sum, cdp[len-1]); 357 return NULL; 358 } 359 360 rate = cdp[3]; 361 if (!(rate & 0x0f)) { 362 av_log(avctx, AV_LOG_WARNING, "CDP frame rate invalid (0x%.2x)\n", rate); 363 return NULL; 364 } 365 rate >>= 4; 366 if (rate > 8) { 367 av_log(avctx, AV_LOG_WARNING, "CDP frame rate invalid (0x%.2x)\n", rate); 368 return NULL; 369 } 370 371 if (!(cdp[4] & 0x43)) /* ccdata_present | caption_service_active | reserved */ { 372 av_log(avctx, AV_LOG_WARNING, "CDP flags invalid (0x%.2x)\n", cdp[4]); 373 return NULL; 374 } 375 376 hdr = (cdp[5] << 8) | cdp[6]; 377 if (cdp[7] != 0x72) /* ccdata_id */ { 378 av_log(avctx, AV_LOG_WARNING, "Invalid ccdata_id 0x%.2x\n", cdp[7]); 379 return NULL; 380 } 381 382 cc_count = cdp[8]; 383 if (!(cc_count & 0xe0)) { 384 av_log(avctx, AV_LOG_WARNING, "Invalid cc_count 0x%.2x\n", cc_count); 385 return NULL; 386 } 387 388 cc_count &= 0x1f; 389 if ((len - 13) < cc_count * 3) { 390 av_log(avctx, AV_LOG_WARNING, "Invalid cc_count %d (> %zu)\n", cc_count * 3, len - 13); 391 return NULL; 392 } 393 394 if (cdp[len - 4] != 0x74) /* footer id */ { 395 av_log(avctx, AV_LOG_WARNING, "Invalid footer id 0x%.2x\n", cdp[len-4]); 396 return NULL; 397 } 398 399 ftr = (cdp[len - 3] << 8) | cdp[len - 2]; 400 if (ftr != hdr) { 401 av_log(avctx, AV_LOG_WARNING, "Header 0x%.4x != Footer 0x%.4x\n", hdr, ftr); 402 return NULL; 403 } 404 405 cc = (uint8_t *)av_malloc(cc_count * 3); 406 if (cc == NULL) { 407 av_log(avctx, AV_LOG_WARNING, "CC - av_malloc failed for cc_count = %d\n", cc_count); 408 return NULL; 409 } 410 411 for (size_t i = 0; i < cc_count; i++) { 412 cc[3*i + 0] = cdp[9 + 3*i+0] /* & 3 */; 413 cc[3*i + 1] = cdp[9 + 3*i+1]; 414 cc[3*i + 2] = cdp[9 + 3*i+2]; 415 } 416 417 cc_count *= 3; 418 return cc; 419} 420 421static uint8_t *get_metadata(AVFormatContext *avctx, uint16_t *buf, size_t width, 422 uint8_t *tgt, size_t tgt_size, AVPacket *pkt) 423{ 424 decklink_cctx *cctx = (struct decklink_cctx *) avctx->priv_data; 425 uint16_t *max_buf = buf + width; 426 427 while (buf < max_buf - 6) { 428 int len; 429 uint16_t did = buf[3] & 0xFF; // data id 430 uint16_t sdid = buf[4] & 0xFF; // secondary data id 431 /* Check for VANC header */ 432 if (buf[0] != 0 || buf[1] != 0x3ff || buf[2] != 0x3ff) { 433 return tgt; 434 } 435 436 len = (buf[5] & 0xff) + 6 + 1; 437 if (len > max_buf - buf) { 438 av_log(avctx, AV_LOG_WARNING, "Data Count (%d) > data left (%zu)\n", 439 len, max_buf - buf); 440 return tgt; 441 } 442 443 if (did == 0x43 && (sdid == 0x02 || sdid == 0x03) && cctx->teletext_lines && 444 width == 1920 && tgt_size >= 1920) { 445 if (check_vanc_parity_checksum(buf, len, buf[len - 1]) < 0) { 446 av_log(avctx, AV_LOG_WARNING, "VANC parity or checksum incorrect\n"); 447 goto skip_packet; 448 } 449 tgt = teletext_data_unit_from_ancillary_packet(buf + 3, buf + len, tgt, cctx->teletext_lines, 1); 450 } else if (did == 0x61 && sdid == 0x01) { 451 unsigned int data_len; 452 uint8_t *data; 453 if (check_vanc_parity_checksum(buf, len, buf[len - 1]) < 0) { 454 av_log(avctx, AV_LOG_WARNING, "VANC parity or checksum incorrect\n"); 455 goto skip_packet; 456 } 457 clear_parity_bits(buf, len); 458 data = vanc_to_cc(avctx, buf, width, data_len); 459 if (data) { 460 if (av_packet_add_side_data(pkt, AV_PKT_DATA_A53_CC, data, data_len) < 0) 461 av_free(data); 462 } 463 } else { 464 av_log(avctx, AV_LOG_DEBUG, "Unknown meta data DID = 0x%.2x SDID = 0x%.2x\n", 465 did, sdid); 466 } 467skip_packet: 468 buf += len; 469 } 470 471 return tgt; 472} 473 474static void avpacket_queue_init(AVFormatContext *avctx, AVPacketQueue *q) 475{ 476 struct decklink_cctx *ctx = (struct decklink_cctx *)avctx->priv_data; 477 memset(q, 0, sizeof(AVPacketQueue)); 478 pthread_mutex_init(&q->mutex, NULL); 479 pthread_cond_init(&q->cond, NULL); 480 q->avctx = avctx; 481 q->max_q_size = ctx->queue_size; 482} 483 484static void avpacket_queue_flush(AVPacketQueue *q) 485{ 486 PacketListEntry *pkt, *pkt1; 487 488 pthread_mutex_lock(&q->mutex); 489 for (pkt = q->pkt_list.head; pkt != NULL; pkt = pkt1) { 490 pkt1 = pkt->next; 491 av_packet_unref(&pkt->pkt); 492 av_freep(&pkt); 493 } 494 q->pkt_list.head = NULL; 495 q->pkt_list.tail = NULL; 496 q->nb_packets = 0; 497 q->size = 0; 498 pthread_mutex_unlock(&q->mutex); 499} 500 501static void avpacket_queue_end(AVPacketQueue *q) 502{ 503 avpacket_queue_flush(q); 504 pthread_mutex_destroy(&q->mutex); 505 pthread_cond_destroy(&q->cond); 506} 507 508static unsigned long long avpacket_queue_size(AVPacketQueue *q) 509{ 510 unsigned long long size; 511 pthread_mutex_lock(&q->mutex); 512 size = q->size; 513 pthread_mutex_unlock(&q->mutex); 514 return size; 515} 516 517static int avpacket_queue_put(AVPacketQueue *q, AVPacket *pkt) 518{ 519 PacketListEntry *pkt1; 520 521 // Drop Packet if queue size is > maximum queue size 522 if (avpacket_queue_size(q) > (uint64_t)q->max_q_size) { 523 av_packet_unref(pkt); 524 av_log(q->avctx, AV_LOG_WARNING, "Decklink input buffer overrun!\n"); 525 return -1; 526 } 527 /* ensure the packet is reference counted */ 528 if (av_packet_make_refcounted(pkt) < 0) { 529 av_packet_unref(pkt); 530 return -1; 531 } 532 533 pkt1 = (PacketListEntry *)av_malloc(sizeof(*pkt1)); 534 if (!pkt1) { 535 av_packet_unref(pkt); 536 return -1; 537 } 538 av_packet_move_ref(&pkt1->pkt, pkt); 539 pkt1->next = NULL; 540 541 pthread_mutex_lock(&q->mutex); 542 543 if (!q->pkt_list.tail) { 544 q->pkt_list.head = pkt1; 545 } else { 546 q->pkt_list.tail->next = pkt1; 547 } 548 549 q->pkt_list.tail = pkt1; 550 q->nb_packets++; 551 q->size += pkt1->pkt.size + sizeof(*pkt1); 552 553 pthread_cond_signal(&q->cond); 554 555 pthread_mutex_unlock(&q->mutex); 556 return 0; 557} 558 559static int avpacket_queue_get(AVPacketQueue *q, AVPacket *pkt, int block) 560{ 561 int ret; 562 563 pthread_mutex_lock(&q->mutex); 564 565 for (;; ) { 566 PacketListEntry *pkt1 = q->pkt_list.head; 567 if (pkt1) { 568 q->pkt_list.head = pkt1->next; 569 if (!q->pkt_list.head) { 570 q->pkt_list.tail = NULL; 571 } 572 q->nb_packets--; 573 q->size -= pkt1->pkt.size + sizeof(*pkt1); 574 *pkt = pkt1->pkt; 575 av_free(pkt1); 576 ret = 1; 577 break; 578 } else if (!block) { 579 ret = 0; 580 break; 581 } else { 582 pthread_cond_wait(&q->cond, &q->mutex); 583 } 584 } 585 pthread_mutex_unlock(&q->mutex); 586 return ret; 587} 588 589static void handle_klv(AVFormatContext *avctx, decklink_ctx *ctx, IDeckLinkVideoInputFrame *videoFrame, int64_t pts) 590{ 591 const uint8_t KLV_DID = 0x44; 592 const uint8_t KLV_IN_VANC_SDID = 0x04; 593 594 struct KLVPacket 595 { 596 uint16_t sequence_counter; 597 std::vector<uint8_t> data; 598 }; 599 600 size_t total_size = 0; 601 std::vector<std::vector<KLVPacket>> klv_packets(256); 602 603 IDeckLinkVideoFrameAncillaryPackets *packets = nullptr; 604 if (videoFrame->QueryInterface(IID_IDeckLinkVideoFrameAncillaryPackets, (void**)&packets) != S_OK) 605 return; 606 607 IDeckLinkAncillaryPacketIterator *it = nullptr; 608 if (packets->GetPacketIterator(&it) != S_OK) { 609 packets->Release(); 610 return; 611 } 612 613 IDeckLinkAncillaryPacket *packet = nullptr; 614 while (it->Next(&packet) == S_OK) { 615 uint8_t *data = nullptr; 616 uint32_t size = 0; 617 618 if (packet->GetDID() == KLV_DID && packet->GetSDID() == KLV_IN_VANC_SDID) { 619 av_log(avctx, AV_LOG_DEBUG, "Found KLV VANC packet on line: %d\n", packet->GetLineNumber()); 620 621 if (packet->GetBytes(bmdAncillaryPacketFormatUInt8, (const void**) &data, &size) == S_OK) { 622 // MID and PSC 623 if (size > 3) { 624 uint8_t mid = data[0]; 625 uint16_t psc = data[1] << 8 | data[2]; 626 627 av_log(avctx, AV_LOG_DEBUG, "KLV with MID: %d and PSC: %d\n", mid, psc); 628 629 auto& list = klv_packets[mid]; 630 uint16_t expected_psc = list.size() + 1; 631 632 if (psc == expected_psc) { 633 uint32_t data_len = size - 3; 634 total_size += data_len; 635 636 KLVPacket packet{ psc }; 637 packet.data.resize(data_len); 638 memcpy(packet.data.data(), data + 3, data_len); 639 640 list.push_back(std::move(packet)); 641 } else { 642 av_log(avctx, AV_LOG_WARNING, "Out of order PSC: %d for MID: %d\n", psc, mid); 643 644 if (!list.empty()) { 645 for (auto& klv : list) 646 total_size -= klv.data.size(); 647 648 list.clear(); 649 } 650 } 651 } 652 } 653 } 654 655 packet->Release(); 656 } 657 658 it->Release(); 659 packets->Release(); 660 661 if (total_size > 0) { 662 std::vector<uint8_t> klv; 663 klv.reserve(total_size); 664 665 for (size_t i = 0; i < klv_packets.size(); ++i) { 666 auto& list = klv_packets[i]; 667 668 if (list.empty()) 669 continue; 670 671 av_log(avctx, AV_LOG_DEBUG, "Joining MID: %d\n", (int)i); 672 673 for (auto& packet : list) 674 klv.insert(klv.end(), packet.data.begin(), packet.data.end()); 675 } 676 677 AVPacket klv_packet = { 0 }; 678 klv_packet.pts = pts; 679 klv_packet.dts = pts; 680 klv_packet.flags |= AV_PKT_FLAG_KEY; 681 klv_packet.stream_index = ctx->klv_st->index; 682 klv_packet.data = klv.data(); 683 klv_packet.size = klv.size(); 684 685 if (avpacket_queue_put(&ctx->queue, &klv_packet) < 0) { 686 ++ctx->dropped; 687 } 688 } 689} 690 691class decklink_input_callback : public IDeckLinkInputCallback 692{ 693public: 694 decklink_input_callback(AVFormatContext *_avctx); 695 ~decklink_input_callback(); 696 697 virtual HRESULT STDMETHODCALLTYPE QueryInterface(REFIID iid, LPVOID *ppv) { return E_NOINTERFACE; } 698 virtual ULONG STDMETHODCALLTYPE AddRef(void); 699 virtual ULONG STDMETHODCALLTYPE Release(void); 700 virtual HRESULT STDMETHODCALLTYPE VideoInputFormatChanged(BMDVideoInputFormatChangedEvents, IDeckLinkDisplayMode*, BMDDetectedVideoInputFormatFlags); 701 virtual HRESULT STDMETHODCALLTYPE VideoInputFrameArrived(IDeckLinkVideoInputFrame*, IDeckLinkAudioInputPacket*); 702 703private: 704 std::atomic<int> _refs; 705 AVFormatContext *avctx; 706 decklink_ctx *ctx; 707 int no_video; 708 int64_t initial_video_pts; 709 int64_t initial_audio_pts; 710}; 711 712decklink_input_callback::decklink_input_callback(AVFormatContext *_avctx) : _refs(1) 713{ 714 avctx = _avctx; 715 decklink_cctx *cctx = (struct decklink_cctx *)avctx->priv_data; 716 ctx = (struct decklink_ctx *)cctx->ctx; 717 no_video = 0; 718 initial_audio_pts = initial_video_pts = AV_NOPTS_VALUE; 719} 720 721decklink_input_callback::~decklink_input_callback() 722{ 723} 724 725ULONG decklink_input_callback::AddRef(void) 726{ 727 return ++_refs; 728} 729 730ULONG decklink_input_callback::Release(void) 731{ 732 int ret = --_refs; 733 if (!ret) 734 delete this; 735 return ret; 736} 737 738static int64_t get_pkt_pts(IDeckLinkVideoInputFrame *videoFrame, 739 IDeckLinkAudioInputPacket *audioFrame, 740 int64_t wallclock, 741 int64_t abs_wallclock, 742 DecklinkPtsSource pts_src, 743 AVRational time_base, int64_t *initial_pts, 744 int copyts) 745{ 746 int64_t pts = AV_NOPTS_VALUE; 747 BMDTimeValue bmd_pts; 748 BMDTimeValue bmd_duration; 749 HRESULT res = E_INVALIDARG; 750 switch (pts_src) { 751 case PTS_SRC_AUDIO: 752 if (audioFrame) 753 res = audioFrame->GetPacketTime(&bmd_pts, time_base.den); 754 break; 755 case PTS_SRC_VIDEO: 756 if (videoFrame) 757 res = videoFrame->GetStreamTime(&bmd_pts, &bmd_duration, time_base.den); 758 break; 759 case PTS_SRC_REFERENCE: 760 if (videoFrame) 761 res = videoFrame->GetHardwareReferenceTimestamp(time_base.den, &bmd_pts, &bmd_duration); 762 break; 763 case PTS_SRC_WALLCLOCK: 764 /* fall through */ 765 case PTS_SRC_ABS_WALLCLOCK: 766 { 767 /* MSVC does not support compound literals like AV_TIME_BASE_Q 768 * in C++ code (compiler error C4576) */ 769 AVRational timebase; 770 timebase.num = 1; 771 timebase.den = AV_TIME_BASE; 772 if (pts_src == PTS_SRC_WALLCLOCK) 773 pts = av_rescale_q(wallclock, timebase, time_base); 774 else 775 pts = av_rescale_q(abs_wallclock, timebase, time_base); 776 break; 777 } 778 } 779 if (res == S_OK) 780 pts = bmd_pts / time_base.num; 781 782 if (!copyts) { 783 if (pts != AV_NOPTS_VALUE && *initial_pts == AV_NOPTS_VALUE) 784 *initial_pts = pts; 785 if (*initial_pts != AV_NOPTS_VALUE) 786 pts -= *initial_pts; 787 } 788 789 return pts; 790} 791 792static int get_bmd_timecode(AVFormatContext *avctx, AVTimecode *tc, AVRational frame_rate, BMDTimecodeFormat tc_format, IDeckLinkVideoInputFrame *videoFrame) 793{ 794 IDeckLinkTimecode *timecode; 795 int ret = AVERROR(ENOENT); 796#if BLACKMAGIC_DECKLINK_API_VERSION >= 0x0b000000 797 int hfr = (tc_format == bmdTimecodeRP188HighFrameRate); 798#else 799 int hfr = 0; 800#endif 801 if (videoFrame->GetTimecode(tc_format, &timecode) == S_OK) { 802 uint8_t hh, mm, ss, ff; 803 if (timecode->GetComponents(&hh, &mm, &ss, &ff) == S_OK) { 804 int flags = (timecode->GetFlags() & bmdTimecodeIsDropFrame) ? AV_TIMECODE_FLAG_DROPFRAME : 0; 805 if (!hfr && av_cmp_q(frame_rate, av_make_q(30, 1)) == 1) 806 ff = ff << 1 | !!(timecode->GetFlags() & bmdTimecodeFieldMark); 807 ret = av_timecode_init_from_components(tc, frame_rate, flags, hh, mm, ss, ff, avctx); 808 } 809 timecode->Release(); 810 } 811 return ret; 812} 813 814static int get_frame_timecode(AVFormatContext *avctx, decklink_ctx *ctx, AVTimecode *tc, IDeckLinkVideoInputFrame *videoFrame) 815{ 816 AVRational frame_rate = ctx->video_st->r_frame_rate; 817 int ret; 818 /* 50/60 fps content has alternating VITC1 and VITC2 timecode (see SMPTE ST 819 * 12-2, section 7), so the native ordering of RP188Any (HFR, VITC1, LTC, 820 * VITC2) would not work because LTC might not contain the field flag. 821 * Therefore we query the types manually. */ 822 if (ctx->tc_format == bmdTimecodeRP188Any && av_cmp_q(frame_rate, av_make_q(30, 1)) == 1) { 823#if BLACKMAGIC_DECKLINK_API_VERSION >= 0x0b000000 824 ret = get_bmd_timecode(avctx, tc, frame_rate, bmdTimecodeRP188HighFrameRate, videoFrame); 825 if (ret == AVERROR(ENOENT)) 826#endif 827 ret = get_bmd_timecode(avctx, tc, frame_rate, bmdTimecodeRP188VITC1, videoFrame); 828 if (ret == AVERROR(ENOENT)) 829 ret = get_bmd_timecode(avctx, tc, frame_rate, bmdTimecodeRP188VITC2, videoFrame); 830 if (ret == AVERROR(ENOENT)) 831 ret = get_bmd_timecode(avctx, tc, frame_rate, bmdTimecodeRP188LTC, videoFrame); 832 } else { 833 ret = get_bmd_timecode(avctx, tc, frame_rate, ctx->tc_format, videoFrame); 834 } 835 return ret; 836} 837 838HRESULT decklink_input_callback::VideoInputFrameArrived( 839 IDeckLinkVideoInputFrame *videoFrame, IDeckLinkAudioInputPacket *audioFrame) 840{ 841 void *frameBytes; 842 void *audioFrameBytes; 843 BMDTimeValue frameTime; 844 BMDTimeValue frameDuration; 845 int64_t wallclock = 0, abs_wallclock = 0; 846 struct decklink_cctx *cctx = (struct decklink_cctx *) avctx->priv_data; 847 848 if (ctx->autodetect) { 849 if (videoFrame && !(videoFrame->GetFlags() & bmdFrameHasNoInputSource) && 850 ctx->bmd_mode == bmdModeUnknown) 851 { 852 ctx->bmd_mode = AUTODETECT_DEFAULT_MODE; 853 } 854 return S_OK; 855 } 856 857 // Drop the frames till system's timestamp aligns with the configured value. 858 if (0 == ctx->frameCount && cctx->timestamp_align) { 859 AVRational remainder = av_make_q(av_gettime() % cctx->timestamp_align, 1000000); 860 AVRational frame_duration = av_inv_q(ctx->video_st->r_frame_rate); 861 if (av_cmp_q(remainder, frame_duration) > 0) { 862 ++ctx->dropped; 863 return S_OK; 864 } 865 } 866 867 ctx->frameCount++; 868 if (ctx->audio_pts_source == PTS_SRC_WALLCLOCK || ctx->video_pts_source == PTS_SRC_WALLCLOCK) 869 wallclock = av_gettime_relative(); 870 if (ctx->audio_pts_source == PTS_SRC_ABS_WALLCLOCK || ctx->video_pts_source == PTS_SRC_ABS_WALLCLOCK) 871 abs_wallclock = av_gettime(); 872 873 // Handle Video Frame 874 if (videoFrame) { 875 AVPacket pkt = { 0 }; 876 if (ctx->frameCount % 25 == 0) { 877 unsigned long long qsize = avpacket_queue_size(&ctx->queue); 878 av_log(avctx, AV_LOG_DEBUG, 879 "Frame received (#%lu) - Valid (%liB) - QSize %fMB\n", 880 ctx->frameCount, 881 videoFrame->GetRowBytes() * videoFrame->GetHeight(), 882 (double)qsize / 1024 / 1024); 883 } 884 885 videoFrame->GetBytes(&frameBytes); 886 videoFrame->GetStreamTime(&frameTime, &frameDuration, 887 ctx->video_st->time_base.den); 888 889 if (videoFrame->GetFlags() & bmdFrameHasNoInputSource) { 890 if (ctx->draw_bars && videoFrame->GetPixelFormat() == bmdFormat8BitYUV) { 891 unsigned bars[8] = { 892 0xEA80EA80, 0xD292D210, 0xA910A9A5, 0x90229035, 893 0x6ADD6ACA, 0x51EF515A, 0x286D28EF, 0x10801080 }; 894 int width = videoFrame->GetWidth(); 895 int height = videoFrame->GetHeight(); 896 unsigned *p = (unsigned *)frameBytes; 897 898 for (int y = 0; y < height; y++) { 899 for (int x = 0; x < width; x += 2) 900 *p++ = bars[(x * 8) / width]; 901 } 902 } 903 904 if (!no_video) { 905 av_log(avctx, AV_LOG_WARNING, "Frame received (#%lu) - No input signal detected " 906 "- Frames dropped %u\n", ctx->frameCount, ++ctx->dropped); 907 } 908 no_video = 1; 909 } else { 910 if (no_video) { 911 av_log(avctx, AV_LOG_WARNING, "Frame received (#%lu) - Input returned " 912 "- Frames dropped %u\n", ctx->frameCount, ++ctx->dropped); 913 } 914 no_video = 0; 915 916 // Handle Timecode (if requested) 917 if (ctx->tc_format) { 918 AVTimecode tcr; 919 if (get_frame_timecode(avctx, ctx, &tcr, videoFrame) >= 0) { 920 char tcstr[AV_TIMECODE_STR_SIZE]; 921 const char *tc = av_timecode_make_string(&tcr, tcstr, 0); 922 if (tc) { 923 AVDictionary* metadata_dict = NULL; 924 uint8_t* packed_metadata; 925 926 if (av_cmp_q(ctx->video_st->r_frame_rate, av_make_q(60, 1)) < 1) { 927 uint32_t tc_data = av_timecode_get_smpte_from_framenum(&tcr, 0); 928 int size = sizeof(uint32_t) * 4; 929 uint32_t *sd = (uint32_t *)av_packet_new_side_data(&pkt, AV_PKT_DATA_S12M_TIMECODE, size); 930 931 if (sd) { 932 *sd = 1; // one TC 933 *(sd + 1) = tc_data; // TC 934 } 935 } 936 937 if (av_dict_set(&metadata_dict, "timecode", tc, 0) >= 0) { 938 size_t metadata_len; 939 packed_metadata = av_packet_pack_dictionary(metadata_dict, &metadata_len); 940 av_dict_free(&metadata_dict); 941 if (packed_metadata) { 942 if (av_packet_add_side_data(&pkt, AV_PKT_DATA_STRINGS_METADATA, packed_metadata, metadata_len) < 0) 943 av_freep(&packed_metadata); 944 else if (!ctx->tc_seen) 945 ctx->tc_seen = ctx->frameCount; 946 } 947 } 948 } 949 } else { 950 av_log(avctx, AV_LOG_DEBUG, "Unable to find timecode.\n"); 951 } 952 } 953 } 954 955 if (ctx->tc_format && cctx->wait_for_tc && !ctx->tc_seen) { 956 957 av_log(avctx, AV_LOG_WARNING, "No TC detected yet. wait_for_tc set. Dropping. \n"); 958 av_log(avctx, AV_LOG_WARNING, "Frame received (#%lu) - " 959 "- Frames dropped %u\n", ctx->frameCount, ++ctx->dropped); 960 return S_OK; 961 } 962 963 pkt.pts = get_pkt_pts(videoFrame, audioFrame, wallclock, abs_wallclock, ctx->video_pts_source, ctx->video_st->time_base, &initial_video_pts, cctx->copyts); 964 pkt.dts = pkt.pts; 965 966 pkt.duration = frameDuration; 967 //To be made sure it still applies 968 pkt.flags |= AV_PKT_FLAG_KEY; 969 pkt.stream_index = ctx->video_st->index; 970 pkt.data = (uint8_t *)frameBytes; 971 pkt.size = videoFrame->GetRowBytes() * 972 videoFrame->GetHeight(); 973 //fprintf(stderr,"Video Frame size %d ts %d\n", pkt.size, pkt.pts); 974 975 if (!no_video) { 976 IDeckLinkVideoFrameAncillary *vanc; 977 AVPacket txt_pkt = { 0 }; 978 uint8_t txt_buf0[3531]; // 35 * 46 bytes decoded teletext lines + 1 byte data_identifier + 1920 bytes OP47 decode buffer 979 uint8_t *txt_buf = txt_buf0; 980 981 if (ctx->enable_klv) { 982 handle_klv(avctx, ctx, videoFrame, pkt.pts); 983 } 984 985 if (videoFrame->GetAncillaryData(&vanc) == S_OK) { 986 int i; 987 BMDPixelFormat vanc_format = vanc->GetPixelFormat(); 988 txt_buf[0] = 0x10; // data_identifier - EBU_data 989 txt_buf++; 990#if CONFIG_LIBZVBI 991 if (ctx->bmd_mode == bmdModePAL && ctx->teletext_lines && 992 (vanc_format == bmdFormat8BitYUV || vanc_format == bmdFormat10BitYUV)) { 993 int64_t line_mask = 1; 994 av_assert0(videoFrame->GetWidth() == 720); 995 for (i = 6; i < 336; i++, line_mask <<= 1) { 996 uint8_t *buf; 997 if ((ctx->teletext_lines & line_mask) && vanc->GetBufferForVerticalBlankingLine(i, (void**)&buf) == S_OK) { 998 if (vanc_format == bmdFormat8BitYUV) 999 txt_buf = teletext_data_unit_from_vbi_data(i, buf, txt_buf, VBI_PIXFMT_UYVY); 1000 else 1001 txt_buf = teletext_data_unit_from_vbi_data_10bit(i, buf, txt_buf); 1002 } 1003 if (i == 22) 1004 i = 317; 1005 } 1006 } 1007#endif 1008 if (vanc_format == bmdFormat10BitYUV && videoFrame->GetWidth() <= MAX_WIDTH_VANC) { 1009 int idx = get_vanc_line_idx(ctx->bmd_mode); 1010 for (i = vanc_line_numbers[idx].vanc_start; i <= vanc_line_numbers[idx].vanc_end; i++) { 1011 uint8_t *buf; 1012 if (vanc->GetBufferForVerticalBlankingLine(i, (void**)&buf) == S_OK) { 1013 uint16_t vanc[MAX_WIDTH_VANC]; 1014 size_t vanc_size = videoFrame->GetWidth(); 1015 if (ctx->bmd_mode == bmdModeNTSC && videoFrame->GetWidth() * 2 <= MAX_WIDTH_VANC) { 1016 vanc_size = vanc_size * 2; 1017 unpack_v210(vanc, buf, videoFrame->GetWidth()); 1018 } else { 1019 extract_luma_from_v210(vanc, buf, videoFrame->GetWidth()); 1020 } 1021 txt_buf = get_metadata(avctx, vanc, vanc_size, 1022 txt_buf, sizeof(txt_buf0) - (txt_buf - txt_buf0), &pkt); 1023 } 1024 if (i == vanc_line_numbers[idx].field0_vanc_end) 1025 i = vanc_line_numbers[idx].field1_vanc_start - 1; 1026 } 1027 } 1028 vanc->Release(); 1029 if (txt_buf - txt_buf0 > 1) { 1030 int stuffing_units = (4 - ((45 + txt_buf - txt_buf0) / 46) % 4) % 4; 1031 while (stuffing_units--) { 1032 memset(txt_buf, 0xff, 46); 1033 txt_buf[1] = 0x2c; // data_unit_length 1034 txt_buf += 46; 1035 } 1036 txt_pkt.pts = pkt.pts; 1037 txt_pkt.dts = pkt.dts; 1038 txt_pkt.stream_index = ctx->teletext_st->index; 1039 txt_pkt.data = txt_buf0; 1040 txt_pkt.size = txt_buf - txt_buf0; 1041 if (avpacket_queue_put(&ctx->queue, &txt_pkt) < 0) { 1042 ++ctx->dropped; 1043 } 1044 } 1045 } 1046 } 1047 1048 pkt.buf = av_buffer_create(pkt.data, pkt.size, decklink_object_free, videoFrame, 0); 1049 if (pkt.buf) 1050 videoFrame->AddRef(); 1051 1052 if (avpacket_queue_put(&ctx->queue, &pkt) < 0) { 1053 ++ctx->dropped; 1054 } 1055 } 1056 1057 // Handle Audio Frame 1058 if (audioFrame) { 1059 AVPacket pkt = { 0 }; 1060 BMDTimeValue audio_pts; 1061 1062 //hack among hacks 1063 pkt.size = audioFrame->GetSampleFrameCount() * ctx->audio_st->codecpar->ch_layout.nb_channels * (ctx->audio_depth / 8); 1064 audioFrame->GetBytes(&audioFrameBytes); 1065 audioFrame->GetPacketTime(&audio_pts, ctx->audio_st->time_base.den); 1066 pkt.pts = get_pkt_pts(videoFrame, audioFrame, wallclock, abs_wallclock, ctx->audio_pts_source, ctx->audio_st->time_base, &initial_audio_pts, cctx->copyts); 1067 pkt.dts = pkt.pts; 1068 1069 //fprintf(stderr,"Audio Frame size %d ts %d\n", pkt.size, pkt.pts); 1070 pkt.flags |= AV_PKT_FLAG_KEY; 1071 pkt.stream_index = ctx->audio_st->index; 1072 pkt.data = (uint8_t *)audioFrameBytes; 1073 1074 if (avpacket_queue_put(&ctx->queue, &pkt) < 0) { 1075 ++ctx->dropped; 1076 } 1077 } 1078 1079 return S_OK; 1080} 1081 1082HRESULT decklink_input_callback::VideoInputFormatChanged( 1083 BMDVideoInputFormatChangedEvents events, IDeckLinkDisplayMode *mode, 1084 BMDDetectedVideoInputFormatFlags formatFlags) 1085{ 1086 struct decklink_cctx *cctx = (struct decklink_cctx *) avctx->priv_data; 1087 ctx->bmd_mode = mode->GetDisplayMode(); 1088 // check the C context member to make sure we set both raw_format and bmd_mode with data from the same format change callback 1089 if (!cctx->raw_format) 1090 ctx->raw_format = (formatFlags & bmdDetectedVideoInputRGB444) ? bmdFormat8BitARGB : bmdFormat8BitYUV; 1091 return S_OK; 1092} 1093 1094static int decklink_autodetect(struct decklink_cctx *cctx) { 1095 struct decklink_ctx *ctx = (struct decklink_ctx *)cctx->ctx; 1096 DECKLINK_BOOL autodetect_supported = false; 1097 int i; 1098 1099 if (ctx->attr->GetFlag(BMDDeckLinkSupportsInputFormatDetection, &autodetect_supported) != S_OK) 1100 return -1; 1101 if (autodetect_supported == false) 1102 return -1; 1103 1104 ctx->autodetect = 1; 1105 ctx->bmd_mode = bmdModeUnknown; 1106 if (ctx->dli->EnableVideoInput(AUTODETECT_DEFAULT_MODE, 1107 bmdFormat8BitYUV, 1108 bmdVideoInputEnableFormatDetection) != S_OK) { 1109 return -1; 1110 } 1111 1112 if (ctx->dli->StartStreams() != S_OK) { 1113 return -1; 1114 } 1115 1116 // 3 second timeout 1117 for (i = 0; i < 30; i++) { 1118 av_usleep(100000); 1119 /* Sometimes VideoInputFrameArrived is called without the 1120 * bmdFrameHasNoInputSource flag before VideoInputFormatChanged. 1121 * So don't break for bmd_mode == AUTODETECT_DEFAULT_MODE. */ 1122 if (ctx->bmd_mode != bmdModeUnknown && 1123 ctx->bmd_mode != AUTODETECT_DEFAULT_MODE) 1124 break; 1125 } 1126 1127 ctx->dli->PauseStreams(); 1128 ctx->dli->FlushStreams(); 1129 ctx->autodetect = 0; 1130 if (ctx->bmd_mode != bmdModeUnknown) { 1131 cctx->format_code = (char *)av_mallocz(5); 1132 if (!cctx->format_code) 1133 return -1; 1134 AV_WB32(cctx->format_code, ctx->bmd_mode); 1135 return 0; 1136 } else { 1137 return -1; 1138 } 1139 1140} 1141 1142extern "C" { 1143 1144av_cold int ff_decklink_read_close(AVFormatContext *avctx) 1145{ 1146 struct decklink_cctx *cctx = (struct decklink_cctx *)avctx->priv_data; 1147 struct decklink_ctx *ctx = (struct decklink_ctx *)cctx->ctx; 1148 1149 if (ctx->dli) { 1150 ctx->dli->StopStreams(); 1151 ctx->dli->DisableVideoInput(); 1152 ctx->dli->DisableAudioInput(); 1153 } 1154 1155 ff_decklink_cleanup(avctx); 1156 avpacket_queue_end(&ctx->queue); 1157 1158 av_freep(&cctx->ctx); 1159 1160 return 0; 1161} 1162 1163av_cold int ff_decklink_read_header(AVFormatContext *avctx) 1164{ 1165 struct decklink_cctx *cctx = (struct decklink_cctx *)avctx->priv_data; 1166 struct decklink_ctx *ctx; 1167 class decklink_allocator *allocator; 1168 class decklink_input_callback *input_callback; 1169 AVStream *st; 1170 HRESULT result; 1171 int ret; 1172 1173 ctx = (struct decklink_ctx *) av_mallocz(sizeof(struct decklink_ctx)); 1174 if (!ctx) 1175 return AVERROR(ENOMEM); 1176 ctx->list_devices = cctx->list_devices; 1177 ctx->list_formats = cctx->list_formats; 1178 ctx->enable_klv = cctx->enable_klv; 1179 ctx->teletext_lines = cctx->teletext_lines; 1180 ctx->preroll = cctx->preroll; 1181 ctx->duplex_mode = cctx->duplex_mode; 1182 if (cctx->tc_format > 0 && (unsigned int)cctx->tc_format < FF_ARRAY_ELEMS(decklink_timecode_format_map)) 1183 ctx->tc_format = decklink_timecode_format_map[cctx->tc_format]; 1184 if (cctx->video_input > 0 && (unsigned int)cctx->video_input < FF_ARRAY_ELEMS(decklink_video_connection_map)) 1185 ctx->video_input = decklink_video_connection_map[cctx->video_input]; 1186 if (cctx->audio_input > 0 && (unsigned int)cctx->audio_input < FF_ARRAY_ELEMS(decklink_audio_connection_map)) 1187 ctx->audio_input = decklink_audio_connection_map[cctx->audio_input]; 1188 ctx->audio_pts_source = cctx->audio_pts_source; 1189 ctx->video_pts_source = cctx->video_pts_source; 1190 ctx->draw_bars = cctx->draw_bars; 1191 ctx->audio_depth = cctx->audio_depth; 1192 if (cctx->raw_format > 0 && (unsigned int)cctx->raw_format < FF_ARRAY_ELEMS(decklink_raw_format_map)) 1193 ctx->raw_format = decklink_raw_format_map[cctx->raw_format]; 1194 cctx->ctx = ctx; 1195 1196 /* Check audio channel option for valid values: 2, 8 or 16 */ 1197 switch (cctx->audio_channels) { 1198 case 2: 1199 case 8: 1200 case 16: 1201 break; 1202 default: 1203 av_log(avctx, AV_LOG_ERROR, "Value of channels option must be one of 2, 8 or 16\n"); 1204 return AVERROR(EINVAL); 1205 } 1206 1207 /* Check audio bit depth option for valid values: 16 or 32 */ 1208 switch (cctx->audio_depth) { 1209 case 16: 1210 case 32: 1211 break; 1212 default: 1213 av_log(avctx, AV_LOG_ERROR, "Value for audio bit depth option must be either 16 or 32\n"); 1214 return AVERROR(EINVAL); 1215 } 1216 1217 /* List available devices. */ 1218 if (ctx->list_devices) { 1219 ff_decklink_list_devices_legacy(avctx, 1, 0); 1220 return AVERROR_EXIT; 1221 } 1222 1223 ret = ff_decklink_init_device(avctx, avctx->url); 1224 if (ret < 0) 1225 return ret; 1226 1227 /* Get input device. */ 1228 if (ctx->dl->QueryInterface(IID_IDeckLinkInput, (void **) &ctx->dli) != S_OK) { 1229 av_log(avctx, AV_LOG_ERROR, "Could not open input device from '%s'\n", 1230 avctx->url); 1231 ret = AVERROR(EIO); 1232 goto error; 1233 } 1234 1235 if (ff_decklink_set_configs(avctx, DIRECTION_IN) < 0) { 1236 av_log(avctx, AV_LOG_ERROR, "Could not set input configuration\n"); 1237 ret = AVERROR(EIO); 1238 goto error; 1239 } 1240 1241 /* List supported formats. */ 1242 if (ctx->list_formats) { 1243 ff_decklink_list_formats(avctx, DIRECTION_IN); 1244 ret = AVERROR_EXIT; 1245 goto error; 1246 } 1247 1248 input_callback = new decklink_input_callback(avctx); 1249 ret = (ctx->dli->SetCallback(input_callback) == S_OK ? 0 : AVERROR_EXTERNAL); 1250 input_callback->Release(); 1251 if (ret < 0) { 1252 av_log(avctx, AV_LOG_ERROR, "Cannot set input callback\n"); 1253 goto error; 1254 } 1255 1256 allocator = new decklink_allocator(); 1257 ret = (ctx->dli->SetVideoInputFrameMemoryAllocator(allocator) == S_OK ? 0 : AVERROR_EXTERNAL); 1258 allocator->Release(); 1259 if (ret < 0) { 1260 av_log(avctx, AV_LOG_ERROR, "Cannot set custom memory allocator\n"); 1261 goto error; 1262 } 1263 1264 if (!cctx->format_code) { 1265 if (decklink_autodetect(cctx) < 0) { 1266 av_log(avctx, AV_LOG_ERROR, "Cannot Autodetect input stream or No signal\n"); 1267 ret = AVERROR(EIO); 1268 goto error; 1269 } 1270 av_log(avctx, AV_LOG_INFO, "Autodetected the input mode\n"); 1271 } 1272 if (ctx->raw_format == (BMDPixelFormat)0) 1273 ctx->raw_format = bmdFormat8BitYUV; 1274 if (ff_decklink_set_format(avctx, DIRECTION_IN) < 0) { 1275 av_log(avctx, AV_LOG_ERROR, "Could not set format code %s for %s\n", 1276 cctx->format_code ? cctx->format_code : "(unset)", avctx->url); 1277 ret = AVERROR(EIO); 1278 goto error; 1279 } 1280 1281#if !CONFIG_LIBZVBI 1282 if (ctx->teletext_lines && ctx->bmd_mode == bmdModePAL) { 1283 av_log(avctx, AV_LOG_ERROR, "Libzvbi support is needed for capturing SD PAL teletext, please recompile FFmpeg.\n"); 1284 ret = AVERROR(ENOSYS); 1285 goto error; 1286 } 1287#endif 1288 1289 /* Setup streams. */ 1290 st = avformat_new_stream(avctx, NULL); 1291 if (!st) { 1292 av_log(avctx, AV_LOG_ERROR, "Cannot add stream\n"); 1293 ret = AVERROR(ENOMEM); 1294 goto error; 1295 } 1296 st->codecpar->codec_type = AVMEDIA_TYPE_AUDIO; 1297 st->codecpar->codec_id = cctx->audio_depth == 32 ? AV_CODEC_ID_PCM_S32LE : AV_CODEC_ID_PCM_S16LE; 1298 st->codecpar->sample_rate = bmdAudioSampleRate48kHz; 1299 st->codecpar->ch_layout.nb_channels = cctx->audio_channels; 1300 avpriv_set_pts_info(st, 64, 1, 1000000); /* 64 bits pts in us */ 1301 ctx->audio_st=st; 1302 1303 st = avformat_new_stream(avctx, NULL); 1304 if (!st) { 1305 av_log(avctx, AV_LOG_ERROR, "Cannot add stream\n"); 1306 ret = AVERROR(ENOMEM); 1307 goto error; 1308 } 1309 st->codecpar->codec_type = AVMEDIA_TYPE_VIDEO; 1310 st->codecpar->width = ctx->bmd_width; 1311 st->codecpar->height = ctx->bmd_height; 1312 1313 st->time_base.den = ctx->bmd_tb_den; 1314 st->time_base.num = ctx->bmd_tb_num; 1315 st->r_frame_rate = av_make_q(st->time_base.den, st->time_base.num); 1316 1317 switch(ctx->raw_format) { 1318 case bmdFormat8BitYUV: 1319 st->codecpar->codec_id = AV_CODEC_ID_RAWVIDEO; 1320 st->codecpar->format = AV_PIX_FMT_UYVY422; 1321 st->codecpar->bit_rate = av_rescale(ctx->bmd_width * ctx->bmd_height * 16, st->time_base.den, st->time_base.num); 1322 break; 1323 case bmdFormat10BitYUV: 1324 st->codecpar->codec_id = AV_CODEC_ID_V210; 1325 st->codecpar->bit_rate = av_rescale(ctx->bmd_width * ctx->bmd_height * 64, st->time_base.den, st->time_base.num * 3); 1326 break; 1327 case bmdFormat8BitARGB: 1328 st->codecpar->codec_id = AV_CODEC_ID_RAWVIDEO; 1329 st->codecpar->format = AV_PIX_FMT_0RGB; 1330 st->codecpar->bit_rate = av_rescale(ctx->bmd_width * ctx->bmd_height * 32, st->time_base.den, st->time_base.num); 1331 break; 1332 case bmdFormat8BitBGRA: 1333 st->codecpar->codec_id = AV_CODEC_ID_RAWVIDEO; 1334 st->codecpar->format = AV_PIX_FMT_BGR0; 1335 st->codecpar->bit_rate = av_rescale(ctx->bmd_width * ctx->bmd_height * 32, st->time_base.den, st->time_base.num); 1336 break; 1337 case bmdFormat10BitRGB: 1338 st->codecpar->codec_id = AV_CODEC_ID_R210; 1339 st->codecpar->bit_rate = av_rescale(ctx->bmd_width * ctx->bmd_height * 30, st->time_base.den, st->time_base.num); 1340 break; 1341 default: 1342 char fourcc_str[AV_FOURCC_MAX_STRING_SIZE] = {0}; 1343 av_fourcc_make_string(fourcc_str, ctx->raw_format); 1344 av_log(avctx, AV_LOG_ERROR, "Raw Format %s not supported\n", fourcc_str); 1345 ret = AVERROR(EINVAL); 1346 goto error; 1347 } 1348 1349 switch (ctx->bmd_field_dominance) { 1350 case bmdUpperFieldFirst: 1351 st->codecpar->field_order = AV_FIELD_TT; 1352 break; 1353 case bmdLowerFieldFirst: 1354 st->codecpar->field_order = AV_FIELD_BB; 1355 break; 1356 case bmdProgressiveFrame: 1357 case bmdProgressiveSegmentedFrame: 1358 st->codecpar->field_order = AV_FIELD_PROGRESSIVE; 1359 break; 1360 } 1361 1362 avpriv_set_pts_info(st, 64, 1, 1000000); /* 64 bits pts in us */ 1363 1364 ctx->video_st=st; 1365 1366 if (ctx->enable_klv) { 1367 st = avformat_new_stream(avctx, NULL); 1368 if (!st) { 1369 ret = AVERROR(ENOMEM); 1370 goto error; 1371 } 1372 st->codecpar->codec_type = AVMEDIA_TYPE_DATA; 1373 st->time_base.den = ctx->bmd_tb_den; 1374 st->time_base.num = ctx->bmd_tb_num; 1375 st->codecpar->codec_id = AV_CODEC_ID_SMPTE_KLV; 1376 avpriv_set_pts_info(st, 64, 1, 1000000); /* 64 bits pts in us */ 1377 ctx->klv_st = st; 1378 } 1379 1380 if (ctx->teletext_lines) { 1381 st = avformat_new_stream(avctx, NULL); 1382 if (!st) { 1383 av_log(avctx, AV_LOG_ERROR, "Cannot add stream\n"); 1384 ret = AVERROR(ENOMEM); 1385 goto error; 1386 } 1387 st->codecpar->codec_type = AVMEDIA_TYPE_SUBTITLE; 1388 st->time_base.den = ctx->bmd_tb_den; 1389 st->time_base.num = ctx->bmd_tb_num; 1390 st->codecpar->codec_id = AV_CODEC_ID_DVB_TELETEXT; 1391 avpriv_set_pts_info(st, 64, 1, 1000000); /* 64 bits pts in us */ 1392 ctx->teletext_st = st; 1393 } 1394 1395 av_log(avctx, AV_LOG_VERBOSE, "Using %d input audio channels\n", ctx->audio_st->codecpar->ch_layout.nb_channels); 1396 result = ctx->dli->EnableAudioInput(bmdAudioSampleRate48kHz, cctx->audio_depth == 32 ? bmdAudioSampleType32bitInteger : bmdAudioSampleType16bitInteger, ctx->audio_st->codecpar->ch_layout.nb_channels); 1397 1398 if (result != S_OK) { 1399 av_log(avctx, AV_LOG_ERROR, "Cannot enable audio input\n"); 1400 ret = AVERROR(EIO); 1401 goto error; 1402 } 1403 1404 result = ctx->dli->EnableVideoInput(ctx->bmd_mode, 1405 ctx->raw_format, 1406 bmdVideoInputFlagDefault); 1407 1408 if (result != S_OK) { 1409 av_log(avctx, AV_LOG_ERROR, "Cannot enable video input\n"); 1410 ret = AVERROR(EIO); 1411 goto error; 1412 } 1413 1414 avpacket_queue_init (avctx, &ctx->queue); 1415 1416 if (ctx->dli->StartStreams() != S_OK) { 1417 av_log(avctx, AV_LOG_ERROR, "Cannot start input stream\n"); 1418 ret = AVERROR(EIO); 1419 goto error; 1420 } 1421 1422 return 0; 1423 1424error: 1425 ff_decklink_cleanup(avctx); 1426 return ret; 1427} 1428 1429int ff_decklink_read_packet(AVFormatContext *avctx, AVPacket *pkt) 1430{ 1431 struct decklink_cctx *cctx = (struct decklink_cctx *)avctx->priv_data; 1432 struct decklink_ctx *ctx = (struct decklink_ctx *)cctx->ctx; 1433 1434 avpacket_queue_get(&ctx->queue, pkt, 1); 1435 1436 if (ctx->tc_format && !(av_dict_get(ctx->video_st->metadata, "timecode", NULL, 0))) { 1437 size_t size; 1438 const uint8_t *side_metadata = av_packet_get_side_data(pkt, AV_PKT_DATA_STRINGS_METADATA, &size); 1439 if (side_metadata) { 1440 if (av_packet_unpack_dictionary(side_metadata, size, &ctx->video_st->metadata) < 0) 1441 av_log(avctx, AV_LOG_ERROR, "Unable to set timecode\n"); 1442 } 1443 } 1444 1445 return 0; 1446} 1447 1448int ff_decklink_list_input_devices(AVFormatContext *avctx, struct AVDeviceInfoList *device_list) 1449{ 1450 return ff_decklink_list_devices(avctx, device_list, 1, 0); 1451} 1452 1453} /* extern "C" */ 1454