Fix compilation on 32-bit systems

[pulseview.git] / pv / storesession.cpp

diff --git a/pv/storesession.cpp b/pv/storesession.cpp
index 5eaff586b6ff787a7fc6a9bb4308a3b2deac3132..dede6a064cb8eda309f7384e180059bdb6398fd8 100644 (file)
--- a/pv/storesession.cpp
+++ b/pv/storesession.cpp
@@ -59,7 +59,7 @@ StoreSession::~StoreSession()
        wait();
 }
 
-pair<uint64_t, uint64_t> StoreSession::progress() const
+pair<int, int> StoreSession::progress() const
 {
        return make_pair(_units_stored.load(), _unit_count.load());
 }
@@ -150,7 +150,8 @@ void StoreSession::store_proc(shared_ptr<data::LogicSnapshot> snapshot)
 {
        assert(snapshot);
 
-       uint64_t start_sample = 0;
+       uint64_t start_sample = 0, sample_count;
+       unsigned progress_scale = 0;
 
        /// TODO: Wrap this in a std::unique_ptr when we transition to C++11
        uint8_t *const data = new uint8_t[BlockSize];
@@ -159,16 +160,23 @@ void StoreSession::store_proc(shared_ptr<data::LogicSnapshot> snapshot)
        const int unit_size = snapshot->unit_size();
        assert(unit_size != 0);
 
-       _unit_count = snapshot->get_sample_count();
+       sample_count = snapshot->get_sample_count();
+
+       // Qt needs the progress values to fit inside an int.  If they would
+       // not, scale the current and max values down until they do.
+       while ((sample_count >> progress_scale) > INT_MAX)
+               progress_scale ++;
+
+       _unit_count = sample_count >> progress_scale;
 
        const unsigned int samples_per_block = BlockSize / unit_size;
 
-       while (!_interrupt && start_sample < _unit_count)
+       while (!_interrupt && start_sample < sample_count)
        {
                progress_updated();
 
                const uint64_t end_sample = min(
-                       start_sample + samples_per_block, _unit_count.load());
+                       start_sample + samples_per_block, sample_count);
                snapshot->get_samples(data, start_sample, end_sample);
 
                if(sr_session_append(_file_name.c_str(), data, unit_size,
@@ -179,7 +187,7 @@ void StoreSession::store_proc(shared_ptr<data::LogicSnapshot> snapshot)
                }
 
                start_sample = end_sample;
-               _units_stored = start_sample;
+               _units_stored = start_sample >> progress_scale;
        }
 
        _unit_count = 0;