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-rw-r--r--lib/edi/common.cpp21
-rw-r--r--lib/edi/common.hpp7
2 files changed, 26 insertions, 2 deletions
diff --git a/lib/edi/common.cpp b/lib/edi/common.cpp
index b4b0c79..4629b55 100644
--- a/lib/edi/common.cpp
+++ b/lib/edi/common.cpp
@@ -61,6 +61,25 @@ time_t frame_timestamp_t::to_unix_epoch() const
return 946684800 + seconds - utco;
}
+double frame_timestamp_t::diff_ms(const frame_timestamp_t& other) const
+{
+ const double lhs = (double)seconds + (tsta / 16384000.0);
+ const double rhs = (double)other.seconds + (other.tsta / 16384000.0);
+ return lhs - rhs;
+}
+
+frame_timestamp_t frame_timestamp_t::from_unix_epoch(std::time_t time, uint32_t tai_utc_offset, uint32_t tsta)
+{
+ frame_timestamp_t ts;
+
+ const std::time_t posix_timestamp_1_jan_2000 = 946684800;
+
+ ts.utco = tai_utc_offset - 32;
+ ts.seconds = time - posix_timestamp_1_jan_2000 + ts.utco;
+ ts.tsta = tsta;
+ return ts;
+}
+
std::chrono::system_clock::time_point frame_timestamp_t::to_system_clock() const
{
auto ts = chrono::system_clock::from_time_t(to_unix_epoch());
@@ -202,7 +221,7 @@ decode_state_t TagDispatcher::decode_afpacket(
return {false, 0};
}
- if (m_last_seq + 1 != seq) {
+ if (m_last_seq + (uint16_t)1 != seq) {
etiLog.level(warn) << "EDI AF Packet sequence error, " << seq;
}
m_last_seq = seq;
diff --git a/lib/edi/common.hpp b/lib/edi/common.hpp
index 887bc3d..1aa2cb6 100644
--- a/lib/edi/common.hpp
+++ b/lib/edi/common.hpp
@@ -38,10 +38,15 @@ struct frame_timestamp_t {
bool valid() const;
std::string to_string() const;
- time_t to_unix_epoch() const;
+ std::time_t to_unix_epoch() const;
std::chrono::system_clock::time_point to_system_clock() const;
+
+ double diff_ms(const frame_timestamp_t& other) const;
+
+ static frame_timestamp_t from_unix_epoch(std::time_t time, uint32_t tai_utc_offset, uint32_t tsta);
};
+
struct decode_state_t {
decode_state_t(bool _complete, size_t _num_bytes_consumed) :
complete(_complete), num_bytes_consumed(_num_bytes_consumed) {}