diff options
Diffstat (limited to 'src/Outputs.cpp')
| -rw-r--r-- | src/Outputs.cpp | 41 |
1 files changed, 37 insertions, 4 deletions
diff --git a/src/Outputs.cpp b/src/Outputs.cpp index 31c7912..f258881 100644 --- a/src/Outputs.cpp +++ b/src/Outputs.cpp @@ -135,7 +135,9 @@ bool ZMQ::write_frame(const uint8_t *buf, size_t len) return true; } -EDI::EDI() { } +EDI::EDI() : + m_clock_tai({}) +{ } EDI::~EDI() { } @@ -170,20 +172,51 @@ bool EDI::enabled() const return not m_edi_conf.destinations.empty(); } +void EDI::set_tist(bool enable, uint32_t delay_ms) +{ + m_tist = enable; + m_delay_ms = delay_ms; +} + bool EDI::write_frame(const uint8_t *buf, size_t len) { if (not m_edi_sender) { m_edi_sender = make_shared<edi::Sender>(m_edi_conf); } - edi::TagStarPTR edi_tagStarPtr; - edi_tagStarPtr.protocol = "DSTI"; + if (m_edi_time == 0) { + using Sec = chrono::seconds; + const auto now = chrono::time_point_cast<Sec>(chrono::system_clock::now()); + m_edi_time = chrono::system_clock::to_time_t(now) + (m_delay_ms / 1000); + + /* TODO we still have to see if 24ms granularity is achievable, given that + * one DAB+ super frame is carried over more than 1 ETI frame. + */ + for (int32_t sub_ms = (m_delay_ms % 1000); sub_ms > 0; sub_ms -= 24) { + m_timestamp += 24 << 14; // Shift 24ms by 14 to Timestamp level 2 + } + + } + + edi::TagStarPTR edi_tagStarPtr("DSTI"); m_edi_tagDSTI.stihf = false; - m_edi_tagDSTI.atstf = false; + m_edi_tagDSTI.atstf = m_tist; + + m_timestamp += 24 << 14; // Shift 24ms by 14 to Timestamp level 2 + if (m_timestamp > 0xf9FFff) { + m_timestamp -= 0xfa0000; // Substract 16384000, corresponding to one second + m_edi_time += 1; + } + + m_edi_tagDSTI.set_edi_time(m_edi_time, m_clock_tai.get_offset()); + m_edi_tagDSTI.tsta = m_timestamp & 0xffffff; + m_edi_tagDSTI.rfadf = false; // DFCT is handled inside the TagDSTI + // TODO invent custom TAG to carry audio levels metadata + edi::TagSSm edi_tagPayload; // TODO make edi_tagPayload.stid configurable edi_tagPayload.istd_data = buf; |