1 files changed, 52 insertions, 0 deletions
diff --git a/third_party/jpeg-xl/lib/jxl/splines_gbench.cc b/third_party/jpeg-xl/lib/jxl/splines_gbench.cc
new file mode 100644
index 0000000000..78ff6d41c0
--- /dev/null
+++ b/third_party/jpeg-xl/lib/jxl/splines_gbench.cc
@@ -0,0 +1,52 @@
+// Copyright (c) the JPEG XL Project Authors. All rights reserved.
+//
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+#include "benchmark/benchmark.h"
+#include "lib/jxl/splines.h"
+
+namespace jxl {
+namespace {
+
+constexpr int kQuantizationAdjustment = 0;
+const ColorCorrelationMap* const cmap = new ColorCorrelationMap;
+const float kYToX = cmap->YtoXRatio(0);
+const float kYToB = cmap->YtoBRatio(0);
+
+void BM_Splines(benchmark::State& state) {
+  const size_t n = state.range();
+
+  std::vector<Spline> spline_data = {
+      {/*control_points=*/{
+           {9, 54}, {118, 159}, {97, 3}, {10, 40}, {150, 25}, {120, 300}},
+       /*color_dct=*/
+       {{0.03125f, 0.00625f, 0.003125f}, {1.f, 0.321875f}, {1.f, 0.24375f}},
+       /*sigma_dct=*/{0.3125f, 0.f, 0.f, 0.0625f}}};
+  std::vector<QuantizedSpline> quantized_splines;
+  std::vector<Spline::Point> starting_points;
+  for (const Spline& spline : spline_data) {
+    quantized_splines.emplace_back(spline, kQuantizationAdjustment, kYToX,
+                                   kYToB);
+    starting_points.push_back(spline.control_points.front());
+  }
+  Splines splines(kQuantizationAdjustment, std::move(quantized_splines),
+                  std::move(starting_points));
+
+  Image3F drawing_area(320, 320);
+  ZeroFillImage(&drawing_area);
+  for (auto _ : state) {
+    for (size_t i = 0; i < n; ++i) {
+      JXL_CHECK(splines.InitializeDrawCache(drawing_area.xsize(),
+                                            drawing_area.ysize(), *cmap));
+      splines.AddTo(&drawing_area, Rect(drawing_area), Rect(drawing_area));
+    }
+  }
+
+  state.SetItemsProcessed(n * state.iterations());
+}
+
+BENCHMARK(BM_Splines)->Range(1, 1 << 10);
+
+}  // namespace
+}  // namespace jxl