#include "segment.hpp"
-#include <utility>
#include <vector>
#include <QObject>
+using std::enable_shared_from_this;
using std::pair;
using std::shared_ptr;
using std::vector;
class Logic;
-class LogicSegment : public Segment
+class LogicSegment : public Segment, public enable_shared_from_this<Segment>
{
Q_OBJECT
virtual ~LogicSegment();
+ /**
+ * Using enable_shared_from_this prevents the normal use of shared_ptr
+ * instances by users of LogicSegment instances. Instead, shared_ptrs may
+ * only be created by the instance itself.
+ * See https://en.cppreference.com/w/cpp/memory/enable_shared_from_this
+ */
+ shared_ptr<const LogicSegment> get_shared_ptr() const;
+
void append_payload(shared_ptr<sigrok::Logic> logic);
void append_payload(void *data, uint64_t data_size);
+ /**
+ * Appends sample data for a single channel where each byte
+ * represents one sample - if it's 0 the state is low, if 1 high.
+ * Other values are not permitted.
+ * Assumes that all channels are having samples added and in the
+ * order of 0..n, not n..0.
+ * Also assumes the the number of samples added for each channel
+ * is constant for every invokation for 0..n. The number of samples
+ * hence may only change when index is 0.
+ */
+ void append_subsignal_payload(unsigned int index, void *data, uint64_t data_size);
+
void get_samples(int64_t start_sample, int64_t end_sample, uint8_t* dest) const;
/**
uint64_t get_unpacked_sample(uint64_t index) const;
+ template <class T> void downsampleTmain(const T*&in, T &acc, T &prev);
+ template <class T> void downsampleT(const uint8_t *in, uint8_t *&out, uint64_t len);
+ void downsampleGeneric(const uint8_t *in, uint8_t *&out, uint64_t len);
+
private:
uint64_t get_subsample(int level, uint64_t offset) const;
struct MipMapLevel mip_map_[ScaleStepCount];
uint64_t last_append_sample_;
+ uint64_t last_append_accumulator_;
+ uint64_t last_append_extra_;
friend struct LogicSegmentTest::Pow2;
friend struct LogicSegmentTest::Basic;