*/
#include <atomic>
+#include <vector>
using std::atomic;
/* Include internal.h first to avoid conflict between winsock.h (used by
return ret;
}
+static void handle_klv(AVFormatContext *avctx, decklink_ctx *ctx, IDeckLinkVideoInputFrame *videoFrame, int64_t pts)
+{
+ const uint8_t KLV_DID = 0x44;
+ const uint8_t KLV_IN_VANC_SDID = 0x04;
+
+ struct KLVPacket
+ {
+ uint16_t sequence_counter;
+ std::vector<uint8_t> data;
+ };
+
+ size_t total_size = 0;
+ std::vector<std::vector<KLVPacket>> klv_packets(256);
+
+ IDeckLinkVideoFrameAncillaryPackets *packets = nullptr;
+ if (videoFrame->QueryInterface(IID_IDeckLinkVideoFrameAncillaryPackets, (void**)&packets) != S_OK)
+ return;
+
+ IDeckLinkAncillaryPacketIterator *it = nullptr;
+ if (packets->GetPacketIterator(&it) != S_OK) {
+ packets->Release();
+ return;
+ }
+
+ IDeckLinkAncillaryPacket *packet = nullptr;
+ while (it->Next(&packet) == S_OK) {
+ uint8_t *data = nullptr;
+ uint32_t size = 0;
+
+ if (packet->GetDID() == KLV_DID && packet->GetSDID() == KLV_IN_VANC_SDID) {
+ av_log(avctx, AV_LOG_DEBUG, "Found KLV VANC packet on line: %d\n", packet->GetLineNumber());
+
+ if (packet->GetBytes(bmdAncillaryPacketFormatUInt8, (const void**) &data, &size) == S_OK) {
+ // MID and PSC
+ if (size > 3) {
+ uint8_t mid = data[0];
+ uint16_t psc = data[1] << 8 | data[2];
+
+ av_log(avctx, AV_LOG_DEBUG, "KLV with MID: %d and PSC: %d\n", mid, psc);
+
+ auto& list = klv_packets[mid];
+ uint16_t expected_psc = list.size() + 1;
+
+ if (psc == expected_psc) {
+ uint32_t data_len = size - 3;
+ total_size += data_len;
+
+ KLVPacket packet{ psc };
+ packet.data.resize(data_len);
+ memcpy(packet.data.data(), data + 3, data_len);
+
+ list.push_back(std::move(packet));
+ } else {
+ av_log(avctx, AV_LOG_WARNING, "Out of order PSC: %d for MID: %d\n", psc, mid);
+
+ if (!list.empty()) {
+ for (auto& klv : list)
+ total_size -= klv.data.size();
+
+ list.clear();
+ }
+ }
+ }
+ }
+ }
+
+ packet->Release();
+ }
+
+ it->Release();
+ packets->Release();
+
+ if (total_size > 0) {
+ std::vector<uint8_t> klv;
+ klv.reserve(total_size);
+
+ for (size_t i = 0; i < klv_packets.size(); ++i) {
+ auto& list = klv_packets[i];
+
+ if (list.empty())
+ continue;
+
+ av_log(avctx, AV_LOG_DEBUG, "Joining MID: %d\n", (int)i);
+
+ for (auto& packet : list)
+ klv.insert(klv.end(), packet.data.begin(), packet.data.end());
+ }
+
+ AVPacket klv_packet;
+ av_init_packet(&klv_packet);
+ klv_packet.pts = pts;
+ klv_packet.dts = pts;
+ klv_packet.flags |= AV_PKT_FLAG_KEY;
+ klv_packet.stream_index = ctx->klv_st->index;
+ klv_packet.data = klv.data();
+ klv_packet.size = klv.size();
+
+ if (avpacket_queue_put(&ctx->queue, &klv_packet) < 0) {
+ ++ctx->dropped;
+ }
+ }
+}
+
class decklink_input_callback : public IDeckLinkInputCallback
{
public:
uint8_t txt_buf0[3531]; // 35 * 46 bytes decoded teletext lines + 1 byte data_identifier + 1920 bytes OP47 decode buffer
uint8_t *txt_buf = txt_buf0;
+ if (ctx->enable_klv) {
+ handle_klv(avctx, ctx, videoFrame, pkt.pts);
+ }
+
if (videoFrame->GetAncillaryData(&vanc) == S_OK) {
int i;
int64_t line_mask = 1;
return AVERROR(ENOMEM);
ctx->list_devices = cctx->list_devices;
ctx->list_formats = cctx->list_formats;
+ ctx->enable_klv = cctx->enable_klv;
ctx->teletext_lines = cctx->teletext_lines;
ctx->preroll = cctx->preroll;
ctx->duplex_mode = cctx->duplex_mode;
ctx->video_st=st;
+ if (ctx->enable_klv) {
+ st = avformat_new_stream(avctx, NULL);
+ if (!st) {
+ ret = AVERROR(ENOMEM);
+ goto error;
+ }
+ st->codecpar->codec_type = AVMEDIA_TYPE_DATA;
+ st->time_base.den = ctx->bmd_tb_den;
+ st->time_base.num = ctx->bmd_tb_num;
+ st->codecpar->codec_id = AV_CODEC_ID_SMPTE_KLV;
+ avpriv_set_pts_info(st, 64, 1, 1000000); /* 64 bits pts in us */
+ ctx->klv_st = st;
+ }
+
if (ctx->teletext_lines) {
st = avformat_new_stream(avctx, NULL);
if (!st) {
{ "argb", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = 32 }, 0, 0, DEC, "raw_format"},
{ "bgra", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = MKBETAG('B','G','R','A') }, 0, 0, DEC, "raw_format"},
{ "rgb10", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = MKBETAG('r','2','1','0') }, 0, 0, DEC, "raw_format"},
+ { "enable_klv", "output klv if present in vanc", OFFSET(enable_klv), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, DEC },
{ "teletext_lines", "teletext lines bitmask", OFFSET(teletext_lines), AV_OPT_TYPE_INT64, { .i64 = 0 }, 0, 0x7ffffffffLL, DEC, "teletext_lines"},
{ "standard", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = 0x7fff9fffeLL}, 0, 0, DEC, "teletext_lines"},
{ "all", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = 0x7ffffffffLL}, 0, 0, DEC, "teletext_lines"},
projects / ffmpeg / commitdiff