Toward further tests

src/finer/R3Stretcher.cpp

@@ -378,8 +378,8 @@ R3Stretcher::getLatency() const
     if (!isRealTime()) {
         return 0;
     } else {
-        double factor = m_pitchScale * 0.5;
-        return size_t(ceil(m_guideConfiguration.longestFftSize * factor));
+        return size_t(ceil(m_guideConfiguration.longestFftSize
+                           * 0.5 * m_pitchScale));
     }
 }
 

src/test/TestStretcher.cpp

@@ -71,8 +71,8 @@ BOOST_AUTO_TEST_CASE(sinusoid_unchanged_single_offline_faster)
     // thing. It will have lower precision for a while at the start
     // and end because of windowing factors, so we check those with a
     // threshold of 0.1; in the middle we expect better
-    // precision. Note that these are relative precisions, not
-    // absolute, i.e. 0.001 means 0.001 of the smaller value - so they
+    // precision. Note that these are relative tolerances, not
+    // absolute, i.e. 0.001 means 0.001x the smaller value - so they
     // are tighter than they appear.
 
     // This syntax for comparing containers with a certain tolerance
@@ -84,11 +84,11 @@ BOOST_AUTO_TEST_CASE(sinusoid_unchanged_single_offline_faster)
     // you're comparing are floats (it sets the tolerance for doubles,
     // leaving float comparison unchanged). Clever... too clever.
     
-    BOOST_TEST(in == out,
+    BOOST_TEST(out == in,
                tt::tolerance(0.1f) << tt::per_element());
     
-    BOOST_TEST(vector<float>(in.begin() + 1024, in.begin() + n - 1024) ==
-               vector<float>(out.begin() + 1024, out.begin() + n - 1024),
+    BOOST_TEST(vector<float>(out.begin() + 1024, out.begin() + n - 1024) ==
+               vector<float>(in.begin() + 1024, in.begin() + n - 1024),
                tt::tolerance(0.001f) << tt::per_element());
 }
 
@@ -127,11 +127,11 @@ BOOST_AUTO_TEST_CASE(sinusoid_unchanged_single_offline_finer)
     // its different windowing design, though see the note above about
     // what these tolerances mean
     
-    BOOST_TEST(in == out,
+    BOOST_TEST(out == in,
                tt::tolerance(0.15f) << tt::per_element());
     
-    BOOST_TEST(vector<float>(in.begin() + 1024, in.begin() + n - 1024) ==
-               vector<float>(out.begin() + 1024, out.begin() + n - 1024),
+    BOOST_TEST(vector<float>(out.begin() + 1024, out.begin() + n - 1024) ==
+               vector<float>(in.begin() + 1024, in.begin() + n - 1024),
                tt::tolerance(0.01f) << tt::per_element());
 
 //    std::cout << "ms\tV" << std::endl;
@@ -140,4 +140,77 @@ BOOST_AUTO_TEST_CASE(sinusoid_unchanged_single_offline_finer)
 //    }
 }
 
+#ifdef NOT_YET
+
+BOOST_AUTO_TEST_CASE(impulses_2_offline_faster)
+{
+    int n = 10000;
+    float freq = 440.f;
+    int rate = 44100;
+    RubberBandStretcher stretcher
+        (rate, 1, RubberBandStretcher::OptionEngineFaster, 2.0, 1.0);
+
+    vector<float> in(n, 0.f), out(n * 2, 0.f);
+
+    in[0] = 1.f;
+    in[1] = -1.f;
+
+    in[4999] = 1.f;
+    in[5000] = -1.f;
+
+    in[9998] = 1.f;
+    in[9999] = -1.f;
+    
+    float *inp = in.data(), *outp = out.data();
+
+    stretcher.setMaxProcessSize(n);
+    stretcher.setExpectedInputDuration(n);
+    BOOST_TEST(stretcher.available() == 0);
+
+    stretcher.study(&inp, n, true);
+    BOOST_TEST(stretcher.available() == 0);
+
+    stretcher.process(&inp, n, true);
+    BOOST_TEST(stretcher.available() == n * 2);
+
+    BOOST_TEST(stretcher.getLatency() == 0); // offline mode
+    
+    size_t got = stretcher.retrieve(&outp, n * 2);
+    BOOST_TEST(got == n * 2);
+    BOOST_TEST(stretcher.available() == -1);
+
+    float max;
+    int peak0, peak1, peak2;
+    
+    for (int i = 0, max = -2.f; i < n/2; ++i) {
+        if (out[i] > max) {
+            max = out[i];
+            peak0 = i;
+        }
+    }
+    for (int i = n/2, max = -2.f; i < (n*3)/2; ++i) {
+        if (out[i] > max) {
+            max = out[i];
+            peak1 = i;
+        }
+    }
+    for (int i = (n*3)/2, max = -2.f; i < n*2; ++i) {
+        if (out[i] > max) {
+            max = out[i];
+            peak2 = i;
+        }
+    }
+
+    BOOST_TEST(peak0 == 0);
+    BOOST_TEST(peak1 == n - 1);
+    BOOST_TEST(peak2 == n*2 - 2);
+
+    std::cout << "ms\tV" << std::endl;
+    for (int i = 0; i < n*2; ++i) {
+        std::cout << i << "\t" << out[i] << std::endl;
+    }
+}
+
+#endif
+
 BOOST_AUTO_TEST_SUITE_END()