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.
7 * This file is part of FFmpeg.
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.
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.
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
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 */
31 #include "libavformat/internal.h"
34 #include <DeckLinkAPI.h>
38 #include "libavformat/avformat.h"
39 #include "libavutil/avassert.h"
40 #include "libavutil/avutil.h"
41 #include "libavutil/common.h"
42 #include "libavutil/internal.h"
43 #include "libavutil/imgutils.h"
44 #include "libavutil/intreadwrite.h"
45 #include "libavutil/time.h"
46 #include "libavutil/timecode.h"
47 #include "libavutil/mathematics.h"
48 #include "libavutil/reverse.h"
55 #include "decklink_common.h"
56 #include "decklink_dec.h"
58 #define MAX_WIDTH_VANC 1920
59 const BMDDisplayMode AUTODETECT_DEFAULT_MODE = bmdModeNTSC;
61 typedef struct VANCLineNumber {
65 int field1_vanc_start;
69 /* These VANC line numbers need not be very accurate. In any case
70 * GetBufferForVerticalBlankingLine() will return an error when invalid
71 * ancillary line number was requested. We just need to make sure that the
72 * entire VANC region is covered, while making sure we don't decode VANC of
73 * another source during switching*/
74 static VANCLineNumber vanc_line_numbers[] = {
77 {bmdModeNTSC, 11, 19, 274, 282},
78 {bmdModeNTSC2398, 11, 19, 274, 282},
79 {bmdModePAL, 7, 22, 320, 335},
80 {bmdModeNTSCp, 11, -1, -1, 39},
81 {bmdModePALp, 7, -1, -1, 45},
85 {bmdModeHD1080p2398, 8, -1, -1, 42},
86 {bmdModeHD1080p24, 8, -1, -1, 42},
87 {bmdModeHD1080p25, 8, -1, -1, 42},
88 {bmdModeHD1080p2997, 8, -1, -1, 42},
89 {bmdModeHD1080p30, 8, -1, -1, 42},
90 {bmdModeHD1080i50, 8, 20, 570, 585},
91 {bmdModeHD1080i5994, 8, 20, 570, 585},
92 {bmdModeHD1080i6000, 8, 20, 570, 585},
93 {bmdModeHD1080p50, 8, -1, -1, 42},
94 {bmdModeHD1080p5994, 8, -1, -1, 42},
95 {bmdModeHD1080p6000, 8, -1, -1, 42},
99 {bmdModeHD720p50, 8, -1, -1, 26},
100 {bmdModeHD720p5994, 8, -1, -1, 26},
101 {bmdModeHD720p60, 8, -1, -1, 26},
103 /* For all other modes, for which we don't support VANC */
104 {bmdModeUnknown, 0, -1, -1, -1}
107 class decklink_allocator : public IDeckLinkMemoryAllocator
110 decklink_allocator(): _refs(1) { }
111 virtual ~decklink_allocator() { }
113 // IDeckLinkMemoryAllocator methods
114 virtual HRESULT STDMETHODCALLTYPE AllocateBuffer(unsigned int bufferSize, void* *allocatedBuffer)
116 void *buf = av_malloc(bufferSize + AV_INPUT_BUFFER_PADDING_SIZE);
118 return E_OUTOFMEMORY;
119 *allocatedBuffer = buf;
122 virtual HRESULT STDMETHODCALLTYPE ReleaseBuffer(void* buffer)
127 virtual HRESULT STDMETHODCALLTYPE Commit() { return S_OK; }
128 virtual HRESULT STDMETHODCALLTYPE Decommit() { return S_OK; }
131 virtual HRESULT STDMETHODCALLTYPE QueryInterface(REFIID iid, LPVOID *ppv) { return E_NOINTERFACE; }
132 virtual ULONG STDMETHODCALLTYPE AddRef(void) { return ++_refs; }
133 virtual ULONG STDMETHODCALLTYPE Release(void)
142 std::atomic<int> _refs;
146 static void decklink_object_free(void *opaque, uint8_t *data)
148 IUnknown *obj = (class IUnknown *)opaque;
153 static int get_vanc_line_idx(BMDDisplayMode mode)
156 for (i = 0; i < FF_ARRAY_ELEMS(vanc_line_numbers); i++) {
157 if (mode == vanc_line_numbers[i].mode)
160 /* Return the VANC idx for Unknown mode */
164 static inline void clear_parity_bits(uint16_t *buf, int len) {
166 for (i = 0; i < len; i++)
170 static int check_vanc_parity_checksum(uint16_t *buf, int len, uint16_t checksum) {
172 uint16_t vanc_sum = 0;
173 for (i = 3; i < len - 1; i++) {
176 int p = av_parity(v & 0xff);
177 if ((!!p ^ !!(v & 0x100)) || (np != 1 && np != 2)) {
178 // Parity check failed
184 vanc_sum |= ((~vanc_sum & 0x100) << 1);
185 if (checksum != vanc_sum) {
186 // Checksum verification failed
192 /* The 10-bit VANC data is packed in V210, we only need the luma component. */
193 static void extract_luma_from_v210(uint16_t *dst, const uint8_t *src, int width)
196 for (i = 0; i < width / 3; i++) {
197 *dst++ = (src[1] >> 2) + ((src[2] & 15) << 6);
198 *dst++ = src[4] + ((src[5] & 3) << 8);
199 *dst++ = (src[6] >> 4) + ((src[7] & 63) << 4);
204 static void unpack_v210(uint16_t *dst, const uint8_t *src, int width)
207 for (i = 0; i < width * 2 / 3; i++) {
208 *dst++ = src[0] + ((src[1] & 3) << 8);
209 *dst++ = (src[1] >> 2) + ((src[2] & 15) << 6);
210 *dst++ = (src[2] >> 4) + ((src[3] & 63) << 4);
215 static uint8_t calc_parity_and_line_offset(int line)
217 uint8_t ret = (line < 313) << 5;
218 if (line >= 7 && line <= 22)
220 if (line >= 320 && line <= 335)
225 static void fill_data_unit_head(int line, uint8_t *tgt)
227 tgt[0] = 0x02; // data_unit_id
228 tgt[1] = 0x2c; // data_unit_length
229 tgt[2] = calc_parity_and_line_offset(line); // field_parity, line_offset
230 tgt[3] = 0xe4; // framing code
234 static uint8_t* teletext_data_unit_from_vbi_data(int line, uint8_t *src, uint8_t *tgt, vbi_pixfmt fmt)
236 vbi_bit_slicer slicer;
238 vbi_bit_slicer_init(&slicer, 720, 13500000, 6937500, 6937500, 0x00aaaae4, 0xffff, 18, 6, 42 * 8, VBI_MODULATION_NRZ_MSB, fmt);
240 if (vbi_bit_slice(&slicer, src, tgt + 4) == FALSE)
243 fill_data_unit_head(line, tgt);
248 static uint8_t* teletext_data_unit_from_vbi_data_10bit(int line, uint8_t *src, uint8_t *tgt)
252 uint8_t *pend = y + 720;
253 /* The 10-bit VBI data is packed in V210, but libzvbi only supports 8-bit,
254 * so we extract the 8 MSBs of the luma component, that is enough for
255 * teletext bit slicing. */
257 *py++ = (src[1] >> 4) + ((src[2] & 15) << 4);
258 *py++ = (src[4] >> 2) + ((src[5] & 3 ) << 6);
259 *py++ = (src[6] >> 6) + ((src[7] & 63) << 2);
262 return teletext_data_unit_from_vbi_data(line, y, tgt, VBI_PIXFMT_YUV420);
266 static uint8_t* teletext_data_unit_from_op47_vbi_packet(int line, uint16_t *py, uint8_t *tgt)
270 if (py[0] != 0x255 || py[1] != 0x255 || py[2] != 0x227)
273 fill_data_unit_head(line, tgt);
278 for (i = 0; i < 42; i++)
279 *tgt++ = ff_reverse[py[i] & 255];
284 static int linemask_matches(int line, int64_t mask)
287 if (line >= 6 && line <= 22)
289 if (line >= 318 && line <= 335)
290 shift = line - 318 + 17;
291 return shift >= 0 && ((1ULL << shift) & mask);
294 static uint8_t* teletext_data_unit_from_op47_data(uint16_t *py, uint16_t *pend, uint8_t *tgt, int64_t wanted_lines)
297 if (py[0] == 0x151 && py[1] == 0x115 && py[3] == 0x102) { // identifier, identifier, format code for WST teletext
298 uint16_t *descriptors = py + 4;
301 for (i = 0; i < 5 && py < pend - 45; i++, py += 45) {
302 int line = (descriptors[i] & 31) + (!(descriptors[i] & 128)) * 313;
303 if (line && linemask_matches(line, wanted_lines))
304 tgt = teletext_data_unit_from_op47_vbi_packet(line, py, tgt);
311 static 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 uint16_t did = py[0]; // data id
314 uint16_t sdid = py[1]; // secondary data id
315 uint16_t dc = py[2] & 255; // data count
317 pend = FFMIN(pend, py + dc);
318 if (did == 0x143 && sdid == 0x102) { // subtitle distribution packet
319 tgt = teletext_data_unit_from_op47_data(py, pend, tgt, wanted_lines);
320 } else if (allow_multipacket && did == 0x143 && sdid == 0x203) { // VANC multipacket
321 py += 2; // priority, line/field
322 while (py < pend - 3) {
323 tgt = teletext_data_unit_from_ancillary_packet(py, pend, tgt, wanted_lines, 0);
324 py += 4 + (py[2] & 255); // ndid, nsdid, ndc, line/field
330 static uint8_t *vanc_to_cc(AVFormatContext *avctx, uint16_t *buf, size_t words,
333 size_t i, len = (buf[5] & 0xff) + 6 + 1;
334 uint8_t cdp_sum, rate;
337 uint16_t *cdp = &buf[6]; // CDP follows
338 if (cdp[0] != 0x96 || cdp[1] != 0x69) {
339 av_log(avctx, AV_LOG_WARNING, "Invalid CDP header 0x%.2x 0x%.2x\n", cdp[0], cdp[1]);
343 len -= 7; // remove VANC header and checksum
346 av_log(avctx, AV_LOG_WARNING, "CDP len %d != %zu\n", cdp[2], len);
351 for (i = 0; i < len - 1; i++)
353 cdp_sum = cdp_sum ? 256 - cdp_sum : 0;
354 if (cdp[len - 1] != cdp_sum) {
355 av_log(avctx, AV_LOG_WARNING, "CDP checksum invalid 0x%.4x != 0x%.4x\n", cdp_sum, cdp[len-1]);
360 if (!(rate & 0x0f)) {
361 av_log(avctx, AV_LOG_WARNING, "CDP frame rate invalid (0x%.2x)\n", rate);
366 av_log(avctx, AV_LOG_WARNING, "CDP frame rate invalid (0x%.2x)\n", rate);
370 if (!(cdp[4] & 0x43)) /* ccdata_present | caption_service_active | reserved */ {
371 av_log(avctx, AV_LOG_WARNING, "CDP flags invalid (0x%.2x)\n", cdp[4]);
375 hdr = (cdp[5] << 8) | cdp[6];
376 if (cdp[7] != 0x72) /* ccdata_id */ {
377 av_log(avctx, AV_LOG_WARNING, "Invalid ccdata_id 0x%.2x\n", cdp[7]);
382 if (!(cc_count & 0xe0)) {
383 av_log(avctx, AV_LOG_WARNING, "Invalid cc_count 0x%.2x\n", cc_count);
388 if ((len - 13) < cc_count * 3) {
389 av_log(avctx, AV_LOG_WARNING, "Invalid cc_count %d (> %zu)\n", cc_count * 3, len - 13);
393 if (cdp[len - 4] != 0x74) /* footer id */ {
394 av_log(avctx, AV_LOG_WARNING, "Invalid footer id 0x%.2x\n", cdp[len-4]);
398 ftr = (cdp[len - 3] << 8) | cdp[len - 2];
400 av_log(avctx, AV_LOG_WARNING, "Header 0x%.4x != Footer 0x%.4x\n", hdr, ftr);
404 cc = (uint8_t *)av_malloc(cc_count * 3);
406 av_log(avctx, AV_LOG_WARNING, "CC - av_malloc failed for cc_count = %d\n", cc_count);
410 for (size_t i = 0; i < cc_count; i++) {
411 cc[3*i + 0] = cdp[9 + 3*i+0] /* & 3 */;
412 cc[3*i + 1] = cdp[9 + 3*i+1];
413 cc[3*i + 2] = cdp[9 + 3*i+2];
420 static uint8_t *get_metadata(AVFormatContext *avctx, uint16_t *buf, size_t width,
421 uint8_t *tgt, size_t tgt_size, AVPacket *pkt)
423 decklink_cctx *cctx = (struct decklink_cctx *) avctx->priv_data;
424 uint16_t *max_buf = buf + width;
426 while (buf < max_buf - 6) {
428 uint16_t did = buf[3] & 0xFF; // data id
429 uint16_t sdid = buf[4] & 0xFF; // secondary data id
430 /* Check for VANC header */
431 if (buf[0] != 0 || buf[1] != 0x3ff || buf[2] != 0x3ff) {
435 len = (buf[5] & 0xff) + 6 + 1;
436 if (len > max_buf - buf) {
437 av_log(avctx, AV_LOG_WARNING, "Data Count (%d) > data left (%zu)\n",
442 if (did == 0x43 && (sdid == 0x02 || sdid == 0x03) && cctx->teletext_lines &&
443 width == 1920 && tgt_size >= 1920) {
444 if (check_vanc_parity_checksum(buf, len, buf[len - 1]) < 0) {
445 av_log(avctx, AV_LOG_WARNING, "VANC parity or checksum incorrect\n");
448 tgt = teletext_data_unit_from_ancillary_packet(buf + 3, buf + len, tgt, cctx->teletext_lines, 1);
449 } else if (did == 0x61 && sdid == 0x01) {
450 unsigned int data_len;
452 if (check_vanc_parity_checksum(buf, len, buf[len - 1]) < 0) {
453 av_log(avctx, AV_LOG_WARNING, "VANC parity or checksum incorrect\n");
456 clear_parity_bits(buf, len);
457 data = vanc_to_cc(avctx, buf, width, data_len);
459 if (av_packet_add_side_data(pkt, AV_PKT_DATA_A53_CC, data, data_len) < 0)
463 av_log(avctx, AV_LOG_DEBUG, "Unknown meta data DID = 0x%.2x SDID = 0x%.2x\n",
473 static void avpacket_queue_init(AVFormatContext *avctx, AVPacketQueue *q)
475 struct decklink_cctx *ctx = (struct decklink_cctx *)avctx->priv_data;
476 memset(q, 0, sizeof(AVPacketQueue));
477 pthread_mutex_init(&q->mutex, NULL);
478 pthread_cond_init(&q->cond, NULL);
480 q->max_q_size = ctx->queue_size;
483 static void avpacket_queue_flush(AVPacketQueue *q)
485 AVPacketList *pkt, *pkt1;
487 pthread_mutex_lock(&q->mutex);
488 for (pkt = q->first_pkt; pkt != NULL; pkt = pkt1) {
490 av_packet_unref(&pkt->pkt);
497 pthread_mutex_unlock(&q->mutex);
500 static void avpacket_queue_end(AVPacketQueue *q)
502 avpacket_queue_flush(q);
503 pthread_mutex_destroy(&q->mutex);
504 pthread_cond_destroy(&q->cond);
507 static unsigned long long avpacket_queue_size(AVPacketQueue *q)
509 unsigned long long size;
510 pthread_mutex_lock(&q->mutex);
512 pthread_mutex_unlock(&q->mutex);
516 static int avpacket_queue_put(AVPacketQueue *q, AVPacket *pkt)
520 // Drop Packet if queue size is > maximum queue size
521 if (avpacket_queue_size(q) > (uint64_t)q->max_q_size) {
522 av_packet_unref(pkt);
523 av_log(q->avctx, AV_LOG_WARNING, "Decklink input buffer overrun!\n");
526 /* ensure the packet is reference counted */
527 if (av_packet_make_refcounted(pkt) < 0) {
528 av_packet_unref(pkt);
532 pkt1 = (AVPacketList *)av_malloc(sizeof(AVPacketList));
534 av_packet_unref(pkt);
537 av_packet_move_ref(&pkt1->pkt, pkt);
540 pthread_mutex_lock(&q->mutex);
545 q->last_pkt->next = pkt1;
550 q->size += pkt1->pkt.size + sizeof(*pkt1);
552 pthread_cond_signal(&q->cond);
554 pthread_mutex_unlock(&q->mutex);
558 static int avpacket_queue_get(AVPacketQueue *q, AVPacket *pkt, int block)
563 pthread_mutex_lock(&q->mutex);
568 q->first_pkt = pkt1->next;
573 q->size -= pkt1->pkt.size + sizeof(*pkt1);
582 pthread_cond_wait(&q->cond, &q->mutex);
585 pthread_mutex_unlock(&q->mutex);
589 static void handle_klv(AVFormatContext *avctx, decklink_ctx *ctx, IDeckLinkVideoInputFrame *videoFrame, int64_t pts)
591 const uint8_t KLV_DID = 0x44;
592 const uint8_t KLV_IN_VANC_SDID = 0x04;
596 uint16_t sequence_counter;
597 std::vector<uint8_t> data;
600 size_t total_size = 0;
601 std::vector<std::vector<KLVPacket>> klv_packets(256);
603 IDeckLinkVideoFrameAncillaryPackets *packets = nullptr;
604 if (videoFrame->QueryInterface(IID_IDeckLinkVideoFrameAncillaryPackets, (void**)&packets) != S_OK)
607 IDeckLinkAncillaryPacketIterator *it = nullptr;
608 if (packets->GetPacketIterator(&it) != S_OK) {
613 IDeckLinkAncillaryPacket *packet = nullptr;
614 while (it->Next(&packet) == S_OK) {
615 uint8_t *data = nullptr;
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());
621 if (packet->GetBytes(bmdAncillaryPacketFormatUInt8, (const void**) &data, &size) == S_OK) {
624 uint8_t mid = data[0];
625 uint16_t psc = data[1] << 8 | data[2];
627 av_log(avctx, AV_LOG_DEBUG, "KLV with MID: %d and PSC: %d\n", mid, psc);
629 auto& list = klv_packets[mid];
630 uint16_t expected_psc = list.size() + 1;
632 if (psc == expected_psc) {
633 uint32_t data_len = size - 3;
634 total_size += data_len;
636 KLVPacket packet{ psc };
637 packet.data.resize(data_len);
638 memcpy(packet.data.data(), data + 3, data_len);
640 list.push_back(std::move(packet));
642 av_log(avctx, AV_LOG_WARNING, "Out of order PSC: %d for MID: %d\n", psc, mid);
645 for (auto& klv : list)
646 total_size -= klv.data.size();
661 if (total_size > 0) {
662 std::vector<uint8_t> klv;
663 klv.reserve(total_size);
665 for (size_t i = 0; i < klv_packets.size(); ++i) {
666 auto& list = klv_packets[i];
671 av_log(avctx, AV_LOG_DEBUG, "Joining MID: %d\n", (int)i);
673 for (auto& packet : list)
674 klv.insert(klv.end(), packet.data.begin(), packet.data.end());
678 av_init_packet(&klv_packet);
679 klv_packet.pts = pts;
680 klv_packet.dts = pts;
681 klv_packet.flags |= AV_PKT_FLAG_KEY;
682 klv_packet.stream_index = ctx->klv_st->index;
683 klv_packet.data = klv.data();
684 klv_packet.size = klv.size();
686 if (avpacket_queue_put(&ctx->queue, &klv_packet) < 0) {
692 class decklink_input_callback : public IDeckLinkInputCallback
695 decklink_input_callback(AVFormatContext *_avctx);
696 ~decklink_input_callback();
698 virtual HRESULT STDMETHODCALLTYPE QueryInterface(REFIID iid, LPVOID *ppv) { return E_NOINTERFACE; }
699 virtual ULONG STDMETHODCALLTYPE AddRef(void);
700 virtual ULONG STDMETHODCALLTYPE Release(void);
701 virtual HRESULT STDMETHODCALLTYPE VideoInputFormatChanged(BMDVideoInputFormatChangedEvents, IDeckLinkDisplayMode*, BMDDetectedVideoInputFormatFlags);
702 virtual HRESULT STDMETHODCALLTYPE VideoInputFrameArrived(IDeckLinkVideoInputFrame*, IDeckLinkAudioInputPacket*);
705 std::atomic<int> _refs;
706 AVFormatContext *avctx;
709 int64_t initial_video_pts;
710 int64_t initial_audio_pts;
713 decklink_input_callback::decklink_input_callback(AVFormatContext *_avctx) : _refs(1)
716 decklink_cctx *cctx = (struct decklink_cctx *)avctx->priv_data;
717 ctx = (struct decklink_ctx *)cctx->ctx;
719 initial_audio_pts = initial_video_pts = AV_NOPTS_VALUE;
722 decklink_input_callback::~decklink_input_callback()
726 ULONG decklink_input_callback::AddRef(void)
731 ULONG decklink_input_callback::Release(void)
739 static int64_t get_pkt_pts(IDeckLinkVideoInputFrame *videoFrame,
740 IDeckLinkAudioInputPacket *audioFrame,
742 int64_t abs_wallclock,
743 DecklinkPtsSource pts_src,
744 AVRational time_base, int64_t *initial_pts,
747 int64_t pts = AV_NOPTS_VALUE;
748 BMDTimeValue bmd_pts;
749 BMDTimeValue bmd_duration;
750 HRESULT res = E_INVALIDARG;
754 res = audioFrame->GetPacketTime(&bmd_pts, time_base.den);
758 res = videoFrame->GetStreamTime(&bmd_pts, &bmd_duration, time_base.den);
760 case PTS_SRC_REFERENCE:
762 res = videoFrame->GetHardwareReferenceTimestamp(time_base.den, &bmd_pts, &bmd_duration);
764 case PTS_SRC_WALLCLOCK:
766 case PTS_SRC_ABS_WALLCLOCK:
768 /* MSVC does not support compound literals like AV_TIME_BASE_Q
769 * in C++ code (compiler error C4576) */
772 timebase.den = AV_TIME_BASE;
773 if (pts_src == PTS_SRC_WALLCLOCK)
774 pts = av_rescale_q(wallclock, timebase, time_base);
776 pts = av_rescale_q(abs_wallclock, timebase, time_base);
781 pts = bmd_pts / time_base.num;
784 if (pts != AV_NOPTS_VALUE && *initial_pts == AV_NOPTS_VALUE)
786 if (*initial_pts != AV_NOPTS_VALUE)
793 static int get_bmd_timecode(AVFormatContext *avctx, AVTimecode *tc, AVRational frame_rate, BMDTimecodeFormat tc_format, IDeckLinkVideoInputFrame *videoFrame)
795 IDeckLinkTimecode *timecode;
796 int ret = AVERROR(ENOENT);
797 #if BLACKMAGIC_DECKLINK_API_VERSION >= 0x0b000000
798 int hfr = (tc_format == bmdTimecodeRP188HighFrameRate);
802 if (videoFrame->GetTimecode(tc_format, &timecode) == S_OK) {
803 uint8_t hh, mm, ss, ff;
804 if (timecode->GetComponents(&hh, &mm, &ss, &ff) == S_OK) {
805 int flags = (timecode->GetFlags() & bmdTimecodeIsDropFrame) ? AV_TIMECODE_FLAG_DROPFRAME : 0;
806 if (!hfr && av_cmp_q(frame_rate, av_make_q(30, 1)) == 1)
807 ff = ff << 1 | !!(timecode->GetFlags() & bmdTimecodeFieldMark);
808 ret = av_timecode_init_from_components(tc, frame_rate, flags, hh, mm, ss, ff, avctx);
815 static int get_frame_timecode(AVFormatContext *avctx, decklink_ctx *ctx, AVTimecode *tc, IDeckLinkVideoInputFrame *videoFrame)
817 AVRational frame_rate = ctx->video_st->r_frame_rate;
819 /* 50/60 fps content has alternating VITC1 and VITC2 timecode (see SMPTE ST
820 * 12-2, section 7), so the native ordering of RP188Any (HFR, VITC1, LTC,
821 * VITC2) would not work because LTC might not contain the field flag.
822 * Therefore we query the types manually. */
823 if (ctx->tc_format == bmdTimecodeRP188Any && av_cmp_q(frame_rate, av_make_q(30, 1)) == 1) {
824 #if BLACKMAGIC_DECKLINK_API_VERSION >= 0x0b000000
825 ret = get_bmd_timecode(avctx, tc, frame_rate, bmdTimecodeRP188HighFrameRate, videoFrame);
826 if (ret == AVERROR(ENOENT))
828 ret = get_bmd_timecode(avctx, tc, frame_rate, bmdTimecodeRP188VITC1, videoFrame);
829 if (ret == AVERROR(ENOENT))
830 ret = get_bmd_timecode(avctx, tc, frame_rate, bmdTimecodeRP188VITC2, videoFrame);
831 if (ret == AVERROR(ENOENT))
832 ret = get_bmd_timecode(avctx, tc, frame_rate, bmdTimecodeRP188LTC, videoFrame);
834 ret = get_bmd_timecode(avctx, tc, frame_rate, ctx->tc_format, videoFrame);
839 HRESULT decklink_input_callback::VideoInputFrameArrived(
840 IDeckLinkVideoInputFrame *videoFrame, IDeckLinkAudioInputPacket *audioFrame)
843 void *audioFrameBytes;
844 BMDTimeValue frameTime;
845 BMDTimeValue frameDuration;
846 int64_t wallclock = 0, abs_wallclock = 0;
847 struct decklink_cctx *cctx = (struct decklink_cctx *) avctx->priv_data;
849 if (ctx->autodetect) {
850 if (videoFrame && !(videoFrame->GetFlags() & bmdFrameHasNoInputSource) &&
851 ctx->bmd_mode == bmdModeUnknown)
853 ctx->bmd_mode = AUTODETECT_DEFAULT_MODE;
858 // Drop the frames till system's timestamp aligns with the configured value.
859 if (0 == ctx->frameCount && cctx->timestamp_align) {
860 AVRational remainder = av_make_q(av_gettime() % cctx->timestamp_align, 1000000);
861 AVRational frame_duration = av_inv_q(ctx->video_st->r_frame_rate);
862 if (av_cmp_q(remainder, frame_duration) > 0) {
869 if (ctx->audio_pts_source == PTS_SRC_WALLCLOCK || ctx->video_pts_source == PTS_SRC_WALLCLOCK)
870 wallclock = av_gettime_relative();
871 if (ctx->audio_pts_source == PTS_SRC_ABS_WALLCLOCK || ctx->video_pts_source == PTS_SRC_ABS_WALLCLOCK)
872 abs_wallclock = av_gettime();
874 // Handle Video Frame
877 av_init_packet(&pkt);
878 if (ctx->frameCount % 25 == 0) {
879 unsigned long long qsize = avpacket_queue_size(&ctx->queue);
880 av_log(avctx, AV_LOG_DEBUG,
881 "Frame received (#%lu) - Valid (%liB) - QSize %fMB\n",
883 videoFrame->GetRowBytes() * videoFrame->GetHeight(),
884 (double)qsize / 1024 / 1024);
887 videoFrame->GetBytes(&frameBytes);
888 videoFrame->GetStreamTime(&frameTime, &frameDuration,
889 ctx->video_st->time_base.den);
891 if (videoFrame->GetFlags() & bmdFrameHasNoInputSource) {
892 if (ctx->draw_bars && videoFrame->GetPixelFormat() == bmdFormat8BitYUV) {
894 0xEA80EA80, 0xD292D210, 0xA910A9A5, 0x90229035,
895 0x6ADD6ACA, 0x51EF515A, 0x286D28EF, 0x10801080 };
896 int width = videoFrame->GetWidth();
897 int height = videoFrame->GetHeight();
898 unsigned *p = (unsigned *)frameBytes;
900 for (int y = 0; y < height; y++) {
901 for (int x = 0; x < width; x += 2)
902 *p++ = bars[(x * 8) / width];
907 av_log(avctx, AV_LOG_WARNING, "Frame received (#%lu) - No input signal detected "
908 "- Frames dropped %u\n", ctx->frameCount, ++ctx->dropped);
913 av_log(avctx, AV_LOG_WARNING, "Frame received (#%lu) - Input returned "
914 "- Frames dropped %u\n", ctx->frameCount, ++ctx->dropped);
918 // Handle Timecode (if requested)
919 if (ctx->tc_format) {
921 if (get_frame_timecode(avctx, ctx, &tcr, videoFrame) >= 0) {
922 char tcstr[AV_TIMECODE_STR_SIZE];
923 const char *tc = av_timecode_make_string(&tcr, tcstr, 0);
925 AVDictionary* metadata_dict = NULL;
927 uint8_t* packed_metadata;
929 if (av_cmp_q(ctx->video_st->r_frame_rate, av_make_q(60, 1)) < 1) {
930 uint32_t tc_data = av_timecode_get_smpte_from_framenum(&tcr, 0);
931 int size = sizeof(uint32_t) * 4;
932 uint32_t *sd = (uint32_t *)av_packet_new_side_data(&pkt, AV_PKT_DATA_S12M_TIMECODE, size);
936 *(sd + 1) = tc_data; // TC
940 if (av_dict_set(&metadata_dict, "timecode", tc, 0) >= 0) {
941 packed_metadata = av_packet_pack_dictionary(metadata_dict, &metadata_len);
942 av_dict_free(&metadata_dict);
943 if (packed_metadata) {
944 if (av_packet_add_side_data(&pkt, AV_PKT_DATA_STRINGS_METADATA, packed_metadata, metadata_len) < 0)
945 av_freep(&packed_metadata);
946 else if (!ctx->tc_seen)
947 ctx->tc_seen = ctx->frameCount;
952 av_log(avctx, AV_LOG_DEBUG, "Unable to find timecode.\n");
957 if (ctx->tc_format && cctx->wait_for_tc && !ctx->tc_seen) {
959 av_log(avctx, AV_LOG_WARNING, "No TC detected yet. wait_for_tc set. Dropping. \n");
960 av_log(avctx, AV_LOG_WARNING, "Frame received (#%lu) - "
961 "- Frames dropped %u\n", ctx->frameCount, ++ctx->dropped);
965 pkt.pts = get_pkt_pts(videoFrame, audioFrame, wallclock, abs_wallclock, ctx->video_pts_source, ctx->video_st->time_base, &initial_video_pts, cctx->copyts);
968 pkt.duration = frameDuration;
969 //To be made sure it still applies
970 pkt.flags |= AV_PKT_FLAG_KEY;
971 pkt.stream_index = ctx->video_st->index;
972 pkt.data = (uint8_t *)frameBytes;
973 pkt.size = videoFrame->GetRowBytes() *
974 videoFrame->GetHeight();
975 //fprintf(stderr,"Video Frame size %d ts %d\n", pkt.size, pkt.pts);
978 IDeckLinkVideoFrameAncillary *vanc;
980 uint8_t txt_buf0[3531]; // 35 * 46 bytes decoded teletext lines + 1 byte data_identifier + 1920 bytes OP47 decode buffer
981 uint8_t *txt_buf = txt_buf0;
983 if (ctx->enable_klv) {
984 handle_klv(avctx, ctx, videoFrame, pkt.pts);
987 if (videoFrame->GetAncillaryData(&vanc) == S_OK) {
989 BMDPixelFormat vanc_format = vanc->GetPixelFormat();
990 txt_buf[0] = 0x10; // data_identifier - EBU_data
993 if (ctx->bmd_mode == bmdModePAL && ctx->teletext_lines &&
994 (vanc_format == bmdFormat8BitYUV || vanc_format == bmdFormat10BitYUV)) {
995 int64_t line_mask = 1;
996 av_assert0(videoFrame->GetWidth() == 720);
997 for (i = 6; i < 336; i++, line_mask <<= 1) {
999 if ((ctx->teletext_lines & line_mask) && vanc->GetBufferForVerticalBlankingLine(i, (void**)&buf) == S_OK) {
1000 if (vanc_format == bmdFormat8BitYUV)
1001 txt_buf = teletext_data_unit_from_vbi_data(i, buf, txt_buf, VBI_PIXFMT_UYVY);
1003 txt_buf = teletext_data_unit_from_vbi_data_10bit(i, buf, txt_buf);
1010 if (vanc_format == bmdFormat10BitYUV && videoFrame->GetWidth() <= MAX_WIDTH_VANC) {
1011 int idx = get_vanc_line_idx(ctx->bmd_mode);
1012 for (i = vanc_line_numbers[idx].vanc_start; i <= vanc_line_numbers[idx].vanc_end; i++) {
1014 if (vanc->GetBufferForVerticalBlankingLine(i, (void**)&buf) == S_OK) {
1015 uint16_t vanc[MAX_WIDTH_VANC];
1016 size_t vanc_size = videoFrame->GetWidth();
1017 if (ctx->bmd_mode == bmdModeNTSC && videoFrame->GetWidth() * 2 <= MAX_WIDTH_VANC) {
1018 vanc_size = vanc_size * 2;
1019 unpack_v210(vanc, buf, videoFrame->GetWidth());
1021 extract_luma_from_v210(vanc, buf, videoFrame->GetWidth());
1023 txt_buf = get_metadata(avctx, vanc, vanc_size,
1024 txt_buf, sizeof(txt_buf0) - (txt_buf - txt_buf0), &pkt);
1026 if (i == vanc_line_numbers[idx].field0_vanc_end)
1027 i = vanc_line_numbers[idx].field1_vanc_start - 1;
1031 if (txt_buf - txt_buf0 > 1) {
1032 int stuffing_units = (4 - ((45 + txt_buf - txt_buf0) / 46) % 4) % 4;
1033 while (stuffing_units--) {
1034 memset(txt_buf, 0xff, 46);
1035 txt_buf[1] = 0x2c; // data_unit_length
1038 av_init_packet(&txt_pkt);
1039 txt_pkt.pts = pkt.pts;
1040 txt_pkt.dts = pkt.dts;
1041 txt_pkt.stream_index = ctx->teletext_st->index;
1042 txt_pkt.data = txt_buf0;
1043 txt_pkt.size = txt_buf - txt_buf0;
1044 if (avpacket_queue_put(&ctx->queue, &txt_pkt) < 0) {
1051 pkt.buf = av_buffer_create(pkt.data, pkt.size, decklink_object_free, videoFrame, 0);
1053 videoFrame->AddRef();
1055 if (avpacket_queue_put(&ctx->queue, &pkt) < 0) {
1060 // Handle Audio Frame
1063 BMDTimeValue audio_pts;
1064 av_init_packet(&pkt);
1067 pkt.size = audioFrame->GetSampleFrameCount() * ctx->audio_st->codecpar->channels * (ctx->audio_depth / 8);
1068 audioFrame->GetBytes(&audioFrameBytes);
1069 audioFrame->GetPacketTime(&audio_pts, ctx->audio_st->time_base.den);
1070 pkt.pts = get_pkt_pts(videoFrame, audioFrame, wallclock, abs_wallclock, ctx->audio_pts_source, ctx->audio_st->time_base, &initial_audio_pts, cctx->copyts);
1073 //fprintf(stderr,"Audio Frame size %d ts %d\n", pkt.size, pkt.pts);
1074 pkt.flags |= AV_PKT_FLAG_KEY;
1075 pkt.stream_index = ctx->audio_st->index;
1076 pkt.data = (uint8_t *)audioFrameBytes;
1078 if (avpacket_queue_put(&ctx->queue, &pkt) < 0) {
1086 HRESULT decklink_input_callback::VideoInputFormatChanged(
1087 BMDVideoInputFormatChangedEvents events, IDeckLinkDisplayMode *mode,
1088 BMDDetectedVideoInputFormatFlags formatFlags)
1090 struct decklink_cctx *cctx = (struct decklink_cctx *) avctx->priv_data;
1091 ctx->bmd_mode = mode->GetDisplayMode();
1092 // check the C context member to make sure we set both raw_format and bmd_mode with data from the same format change callback
1093 if (!cctx->raw_format)
1094 ctx->raw_format = (formatFlags & bmdDetectedVideoInputRGB444) ? bmdFormat8BitARGB : bmdFormat8BitYUV;
1098 static int decklink_autodetect(struct decklink_cctx *cctx) {
1099 struct decklink_ctx *ctx = (struct decklink_ctx *)cctx->ctx;
1100 DECKLINK_BOOL autodetect_supported = false;
1103 if (ctx->attr->GetFlag(BMDDeckLinkSupportsInputFormatDetection, &autodetect_supported) != S_OK)
1105 if (autodetect_supported == false)
1108 ctx->autodetect = 1;
1109 ctx->bmd_mode = bmdModeUnknown;
1110 if (ctx->dli->EnableVideoInput(AUTODETECT_DEFAULT_MODE,
1112 bmdVideoInputEnableFormatDetection) != S_OK) {
1116 if (ctx->dli->StartStreams() != S_OK) {
1121 for (i = 0; i < 30; i++) {
1123 /* Sometimes VideoInputFrameArrived is called without the
1124 * bmdFrameHasNoInputSource flag before VideoInputFormatChanged.
1125 * So don't break for bmd_mode == AUTODETECT_DEFAULT_MODE. */
1126 if (ctx->bmd_mode != bmdModeUnknown &&
1127 ctx->bmd_mode != AUTODETECT_DEFAULT_MODE)
1131 ctx->dli->PauseStreams();
1132 ctx->dli->FlushStreams();
1133 ctx->autodetect = 0;
1134 if (ctx->bmd_mode != bmdModeUnknown) {
1135 cctx->format_code = (char *)av_mallocz(5);
1136 if (!cctx->format_code)
1138 AV_WB32(cctx->format_code, ctx->bmd_mode);
1148 av_cold int ff_decklink_read_close(AVFormatContext *avctx)
1150 struct decklink_cctx *cctx = (struct decklink_cctx *)avctx->priv_data;
1151 struct decklink_ctx *ctx = (struct decklink_ctx *)cctx->ctx;
1154 ctx->dli->StopStreams();
1155 ctx->dli->DisableVideoInput();
1156 ctx->dli->DisableAudioInput();
1159 ff_decklink_cleanup(avctx);
1160 avpacket_queue_end(&ctx->queue);
1162 av_freep(&cctx->ctx);
1167 av_cold int ff_decklink_read_header(AVFormatContext *avctx)
1169 struct decklink_cctx *cctx = (struct decklink_cctx *)avctx->priv_data;
1170 struct decklink_ctx *ctx;
1171 class decklink_allocator *allocator;
1172 class decklink_input_callback *input_callback;
1177 ctx = (struct decklink_ctx *) av_mallocz(sizeof(struct decklink_ctx));
1179 return AVERROR(ENOMEM);
1180 ctx->list_devices = cctx->list_devices;
1181 ctx->list_formats = cctx->list_formats;
1182 ctx->enable_klv = cctx->enable_klv;
1183 ctx->teletext_lines = cctx->teletext_lines;
1184 ctx->preroll = cctx->preroll;
1185 ctx->duplex_mode = cctx->duplex_mode;
1186 if (cctx->tc_format > 0 && (unsigned int)cctx->tc_format < FF_ARRAY_ELEMS(decklink_timecode_format_map))
1187 ctx->tc_format = decklink_timecode_format_map[cctx->tc_format];
1188 if (cctx->video_input > 0 && (unsigned int)cctx->video_input < FF_ARRAY_ELEMS(decklink_video_connection_map))
1189 ctx->video_input = decklink_video_connection_map[cctx->video_input];
1190 if (cctx->audio_input > 0 && (unsigned int)cctx->audio_input < FF_ARRAY_ELEMS(decklink_audio_connection_map))
1191 ctx->audio_input = decklink_audio_connection_map[cctx->audio_input];
1192 ctx->audio_pts_source = cctx->audio_pts_source;
1193 ctx->video_pts_source = cctx->video_pts_source;
1194 ctx->draw_bars = cctx->draw_bars;
1195 ctx->audio_depth = cctx->audio_depth;
1196 if (cctx->raw_format > 0 && (unsigned int)cctx->raw_format < FF_ARRAY_ELEMS(decklink_raw_format_map))
1197 ctx->raw_format = decklink_raw_format_map[cctx->raw_format];
1200 /* Check audio channel option for valid values: 2, 8 or 16 */
1201 switch (cctx->audio_channels) {
1207 av_log(avctx, AV_LOG_ERROR, "Value of channels option must be one of 2, 8 or 16\n");
1208 return AVERROR(EINVAL);
1211 /* Check audio bit depth option for valid values: 16 or 32 */
1212 switch (cctx->audio_depth) {
1217 av_log(avctx, AV_LOG_ERROR, "Value for audio bit depth option must be either 16 or 32\n");
1218 return AVERROR(EINVAL);
1221 /* List available devices. */
1222 if (ctx->list_devices) {
1223 ff_decklink_list_devices_legacy(avctx, 1, 0);
1224 return AVERROR_EXIT;
1227 ret = ff_decklink_init_device(avctx, avctx->url);
1231 /* Get input device. */
1232 if (ctx->dl->QueryInterface(IID_IDeckLinkInput, (void **) &ctx->dli) != S_OK) {
1233 av_log(avctx, AV_LOG_ERROR, "Could not open input device from '%s'\n",
1239 if (ff_decklink_set_configs(avctx, DIRECTION_IN) < 0) {
1240 av_log(avctx, AV_LOG_ERROR, "Could not set input configuration\n");
1245 /* List supported formats. */
1246 if (ctx->list_formats) {
1247 ff_decklink_list_formats(avctx, DIRECTION_IN);
1252 input_callback = new decklink_input_callback(avctx);
1253 ret = (ctx->dli->SetCallback(input_callback) == S_OK ? 0 : AVERROR_EXTERNAL);
1254 input_callback->Release();
1256 av_log(avctx, AV_LOG_ERROR, "Cannot set input callback\n");
1260 allocator = new decklink_allocator();
1261 ret = (ctx->dli->SetVideoInputFrameMemoryAllocator(allocator) == S_OK ? 0 : AVERROR_EXTERNAL);
1262 allocator->Release();
1264 av_log(avctx, AV_LOG_ERROR, "Cannot set custom memory allocator\n");
1268 if (!cctx->format_code) {
1269 if (decklink_autodetect(cctx) < 0) {
1270 av_log(avctx, AV_LOG_ERROR, "Cannot Autodetect input stream or No signal\n");
1274 av_log(avctx, AV_LOG_INFO, "Autodetected the input mode\n");
1276 if (ctx->raw_format == (BMDPixelFormat)0)
1277 ctx->raw_format = bmdFormat8BitYUV;
1278 if (ff_decklink_set_format(avctx, DIRECTION_IN) < 0) {
1279 av_log(avctx, AV_LOG_ERROR, "Could not set format code %s for %s\n",
1280 cctx->format_code ? cctx->format_code : "(unset)", avctx->url);
1286 if (ctx->teletext_lines && ctx->bmd_mode == bmdModePAL) {
1287 av_log(avctx, AV_LOG_ERROR, "Libzvbi support is needed for capturing SD PAL teletext, please recompile FFmpeg.\n");
1288 ret = AVERROR(ENOSYS);
1293 /* Setup streams. */
1294 st = avformat_new_stream(avctx, NULL);
1296 av_log(avctx, AV_LOG_ERROR, "Cannot add stream\n");
1297 ret = AVERROR(ENOMEM);
1300 st->codecpar->codec_type = AVMEDIA_TYPE_AUDIO;
1301 st->codecpar->codec_id = cctx->audio_depth == 32 ? AV_CODEC_ID_PCM_S32LE : AV_CODEC_ID_PCM_S16LE;
1302 st->codecpar->sample_rate = bmdAudioSampleRate48kHz;
1303 st->codecpar->channels = cctx->audio_channels;
1304 avpriv_set_pts_info(st, 64, 1, 1000000); /* 64 bits pts in us */
1307 st = avformat_new_stream(avctx, NULL);
1309 av_log(avctx, AV_LOG_ERROR, "Cannot add stream\n");
1310 ret = AVERROR(ENOMEM);
1313 st->codecpar->codec_type = AVMEDIA_TYPE_VIDEO;
1314 st->codecpar->width = ctx->bmd_width;
1315 st->codecpar->height = ctx->bmd_height;
1317 st->time_base.den = ctx->bmd_tb_den;
1318 st->time_base.num = ctx->bmd_tb_num;
1319 st->r_frame_rate = av_make_q(st->time_base.den, st->time_base.num);
1321 switch(ctx->raw_format) {
1322 case bmdFormat8BitYUV:
1323 st->codecpar->codec_id = AV_CODEC_ID_RAWVIDEO;
1324 st->codecpar->format = AV_PIX_FMT_UYVY422;
1325 st->codecpar->bit_rate = av_rescale(ctx->bmd_width * ctx->bmd_height * 16, st->time_base.den, st->time_base.num);
1327 case bmdFormat10BitYUV:
1328 st->codecpar->codec_id = AV_CODEC_ID_V210;
1329 st->codecpar->bit_rate = av_rescale(ctx->bmd_width * ctx->bmd_height * 64, st->time_base.den, st->time_base.num * 3);
1331 case bmdFormat8BitARGB:
1332 st->codecpar->codec_id = AV_CODEC_ID_RAWVIDEO;
1333 st->codecpar->format = AV_PIX_FMT_0RGB;
1334 st->codecpar->bit_rate = av_rescale(ctx->bmd_width * ctx->bmd_height * 32, st->time_base.den, st->time_base.num);
1336 case bmdFormat8BitBGRA:
1337 st->codecpar->codec_id = AV_CODEC_ID_RAWVIDEO;
1338 st->codecpar->format = AV_PIX_FMT_BGR0;
1339 st->codecpar->bit_rate = av_rescale(ctx->bmd_width * ctx->bmd_height * 32, st->time_base.den, st->time_base.num);
1341 case bmdFormat10BitRGB:
1342 st->codecpar->codec_id = AV_CODEC_ID_R210;
1343 st->codecpar->bit_rate = av_rescale(ctx->bmd_width * ctx->bmd_height * 30, st->time_base.den, st->time_base.num);
1346 char fourcc_str[AV_FOURCC_MAX_STRING_SIZE] = {0};
1347 av_fourcc_make_string(fourcc_str, ctx->raw_format);
1348 av_log(avctx, AV_LOG_ERROR, "Raw Format %s not supported\n", fourcc_str);
1349 ret = AVERROR(EINVAL);
1353 switch (ctx->bmd_field_dominance) {
1354 case bmdUpperFieldFirst:
1355 st->codecpar->field_order = AV_FIELD_TT;
1357 case bmdLowerFieldFirst:
1358 st->codecpar->field_order = AV_FIELD_BB;
1360 case bmdProgressiveFrame:
1361 case bmdProgressiveSegmentedFrame:
1362 st->codecpar->field_order = AV_FIELD_PROGRESSIVE;
1366 avpriv_set_pts_info(st, 64, 1, 1000000); /* 64 bits pts in us */
1370 if (ctx->enable_klv) {
1371 st = avformat_new_stream(avctx, NULL);
1373 ret = AVERROR(ENOMEM);
1376 st->codecpar->codec_type = AVMEDIA_TYPE_DATA;
1377 st->time_base.den = ctx->bmd_tb_den;
1378 st->time_base.num = ctx->bmd_tb_num;
1379 st->codecpar->codec_id = AV_CODEC_ID_SMPTE_KLV;
1380 avpriv_set_pts_info(st, 64, 1, 1000000); /* 64 bits pts in us */
1384 if (ctx->teletext_lines) {
1385 st = avformat_new_stream(avctx, NULL);
1387 av_log(avctx, AV_LOG_ERROR, "Cannot add stream\n");
1388 ret = AVERROR(ENOMEM);
1391 st->codecpar->codec_type = AVMEDIA_TYPE_SUBTITLE;
1392 st->time_base.den = ctx->bmd_tb_den;
1393 st->time_base.num = ctx->bmd_tb_num;
1394 st->codecpar->codec_id = AV_CODEC_ID_DVB_TELETEXT;
1395 avpriv_set_pts_info(st, 64, 1, 1000000); /* 64 bits pts in us */
1396 ctx->teletext_st = st;
1399 av_log(avctx, AV_LOG_VERBOSE, "Using %d input audio channels\n", ctx->audio_st->codecpar->channels);
1400 result = ctx->dli->EnableAudioInput(bmdAudioSampleRate48kHz, cctx->audio_depth == 32 ? bmdAudioSampleType32bitInteger : bmdAudioSampleType16bitInteger, ctx->audio_st->codecpar->channels);
1402 if (result != S_OK) {
1403 av_log(avctx, AV_LOG_ERROR, "Cannot enable audio input\n");
1408 result = ctx->dli->EnableVideoInput(ctx->bmd_mode,
1410 bmdVideoInputFlagDefault);
1412 if (result != S_OK) {
1413 av_log(avctx, AV_LOG_ERROR, "Cannot enable video input\n");
1418 avpacket_queue_init (avctx, &ctx->queue);
1420 if (ctx->dli->StartStreams() != S_OK) {
1421 av_log(avctx, AV_LOG_ERROR, "Cannot start input stream\n");
1429 ff_decklink_cleanup(avctx);
1433 int ff_decklink_read_packet(AVFormatContext *avctx, AVPacket *pkt)
1435 struct decklink_cctx *cctx = (struct decklink_cctx *)avctx->priv_data;
1436 struct decklink_ctx *ctx = (struct decklink_ctx *)cctx->ctx;
1438 avpacket_queue_get(&ctx->queue, pkt, 1);
1440 if (ctx->tc_format && !(av_dict_get(ctx->video_st->metadata, "timecode", NULL, 0))) {
1442 const uint8_t *side_metadata = av_packet_get_side_data(pkt, AV_PKT_DATA_STRINGS_METADATA, &size);
1443 if (side_metadata) {
1444 if (av_packet_unpack_dictionary(side_metadata, size, &ctx->video_st->metadata) < 0)
1445 av_log(avctx, AV_LOG_ERROR, "Unable to set timecode\n");
1452 int ff_decklink_list_input_devices(AVFormatContext *avctx, struct AVDeviceInfoList *device_list)
1454 return ff_decklink_list_devices(avctx, device_list, 1, 0);