Cleanup

tests/transport.cpp

@@ -109,3 +109,40 @@ BOOST_AUTO_TEST_CASE(recording_transport_replacement_cancels_old_session_and_val
   config.clicks.push_back({10, true});
   BOOST_CHECK(!sonus::prepared_transport::create(config, 48000, 2));
 }
+
+BOOST_AUTO_TEST_CASE(recording_transport_long_schedule_preserves_overlaps_across_buffer_sizes) {
+  auto files = recordings{};
+  files.write("beat1.wav", 1537, 1, -1);
+  files.write("beat2.wav", 17, 2, -2);
+  auto config = files.config();
+  config.backing.clear();
+  config.duration_frames = 40000;
+  config.clicks.clear();
+  for (std::uint64_t i = 0; i < 2000; ++i) {
+    config.clicks.push_back({i * 20, i % 7 == 0});
+  }
+  auto expected = std::vector<float>(config.duration_frames * 2);
+  for (auto const &click : config.clicks) {
+    auto length = click.downbeat ? 1537U : 17U;
+    auto value = click.downbeat ? 1.F / 32768 : 2.F / 32768;
+    for (auto frame = click.frame; frame < std::min(click.frame + length, config.duration_frames); ++frame) {
+      expected[frame * 2] += value;
+      expected[frame * 2 + 1] -= value;
+    }
+  }
+  for (auto chunk : {317U, 1024U, 1701U}) {
+    auto prepared = sonus::prepared_transport::create(config, 48000, 2);
+    BOOST_REQUIRE(prepared);
+    auto engine = sonus::engine::create({.sample_rate = 48000, .channels = 2, .master_volume = 1.F, .no_device = true});
+    BOOST_REQUIRE(engine);
+    auto session = engine->play_transport(std::move(*prepared));
+    BOOST_REQUIRE(session);
+    auto actual = std::vector<float>(expected.size());
+    for (std::uint64_t frame = 0; frame < config.duration_frames; frame += chunk) {
+      BOOST_REQUIRE(engine->render(actual.data() + frame * 2, std::min<std::uint64_t>(chunk, config.duration_frames - frame)));
+    }
+    BOOST_CHECK_EQUAL_COLLECTIONS(actual.begin(), actual.end(), expected.begin(), expected.end());
+    BOOST_CHECK(session->status() == sonus::playback_status::COMPLETED);
+    BOOST_TEST(session->frames() == config.duration_frames);
+  }
+}