Implement LogicSegment::get_surrounding_edges() and use it

[pulseview.git] / pv / data / logicsegment.hpp

diff --git a/pv/data/logicsegment.hpp b/pv/data/logicsegment.hpp
index c9e85593961d2bfbed83ed0797862ec594df0811..a18a59f2e154130de84f5b7c009c2f9f50199fff 100644 (file)
--- a/pv/data/logicsegment.hpp
+++ b/pv/data/logicsegment.hpp
@@ -14,8 +14,7 @@
  * GNU General Public License for more details.
  *
  * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301 USA
+ * along with this program; if not, see <http://www.gnu.org/licenses/>.
  */
 
 #ifndef PULSEVIEW_PV_DATA_LOGICSEGMENT_HPP
@@ -26,6 +25,12 @@
 #include <utility>
 #include <vector>
 
+#include <QObject>
+
+using std::pair;
+using std::shared_ptr;
+using std::vector;
+
 namespace sigrok {
        class Logic;
 }
@@ -41,48 +46,50 @@ struct LongPulses;
 namespace pv {
 namespace data {
 
+class Logic;
+
+typedef struct {
+       uint64_t sample_index, chunk_num, chunk_offs;
+       uint8_t* chunk;
+       uint8_t* value;
+} SegmentLogicDataIterator;
+
 class LogicSegment : public Segment
 {
-private:
-       struct MipMapLevel
-       {
-               uint64_t length;
-               uint64_t data_length;
-               void *data;
-       };
+       Q_OBJECT
+
+public:
+       typedef pair<int64_t, bool> EdgePair;
 
-private:
        static const unsigned int ScaleStepCount = 10;
        static const int MipMapScalePower;
        static const int MipMapScaleFactor;
        static const float LogMipMapScaleFactor;
        static const uint64_t MipMapDataUnit;
 
-public:
-       typedef std::pair<int64_t, bool> EdgePair;
+private:
+       struct MipMapLevel
+       {
+               uint64_t length;
+               uint64_t data_length;
+               void *data;
+       };
 
 public:
-       LogicSegment(std::shared_ptr<sigrok::Logic> logic,
-               uint64_t samplerate, uint64_t expected_num_samples = 0);
+       LogicSegment(pv::data::Logic& owner, uint32_t segment_id,
+               unsigned int unit_size, uint64_t samplerate);
 
        virtual ~LogicSegment();
 
-       void append_payload(std::shared_ptr<sigrok::Logic> logic);
-
-       void get_samples(uint8_t *const data,
-               int64_t start_sample, int64_t end_sample) const;
-
-private:
-       uint64_t unpack_sample(const uint8_t *ptr) const;
-       void pack_sample(uint8_t *ptr, uint64_t value);
-       
-       void reallocate_mipmap_level(MipMapLevel &m);
+       void append_payload(shared_ptr<sigrok::Logic> logic);
+       void append_payload(void *data, uint64_t data_size);
 
-       void append_payload_to_mipmap();
+       void get_samples(int64_t start_sample, int64_t end_sample, uint8_t* dest) const;
 
-       uint64_t get_sample(uint64_t index) const;
+       SegmentLogicDataIterator* begin_sample_iteration(uint64_t start);
+       void continue_sample_iteration(SegmentLogicDataIterator* it, uint64_t increase);
+       void end_sample_iteration(SegmentLogicDataIterator* it);
 
-public:
        /**
         * Parses a logic data segment to generate a list of transitions
         * in a time interval to a given level of detail.
@@ -93,9 +100,22 @@ public:
         * can be resolved at this level of detail.
         * @param[in] sig_index The index of the signal.
         */
-       void get_subsampled_edges(std::vector<EdgePair> &edges,
+       void get_subsampled_edges(vector<EdgePair> &edges,
                uint64_t start, uint64_t end,
-               float min_length, int sig_index);
+               float min_length, int sig_index, bool first_change_only = false);
+
+       void get_surrounding_edges(vector<EdgePair> &dest,
+               uint64_t origin_sample, float min_length, int sig_index);
+
+private:
+       uint64_t unpack_sample(const uint8_t *ptr) const;
+       void pack_sample(uint8_t *ptr, uint64_t value);
+
+       void reallocate_mipmap_level(MipMapLevel &m);
+
+       void append_payload_to_mipmap();
+
+       uint64_t get_unpacked_sample(uint64_t index) const;
 
 private:
        uint64_t get_subsample(int level, uint64_t offset) const;
@@ -103,6 +123,8 @@ private:
        static uint64_t pow2_ceil(uint64_t x, unsigned int power);
 
 private:
+       Logic& owner_;
+
        struct MipMapLevel mip_map_[ScaleStepCount];
        uint64_t last_append_sample_;