1 files changed, 83 insertions, 0 deletions
diff --git a/projects/opencv/generateusergallerycollage_fuzzer.cc b/projects/opencv/generateusergallerycollage_fuzzer.cc
new file mode 100644
index 000000000..4d8432fbe
--- /dev/null
+++ b/projects/opencv/generateusergallerycollage_fuzzer.cc
@@ -0,0 +1,83 @@
+// Copyright 2020 Google Inc.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#include <cstddef>
+#include <cstdint>
+#include <iosfwd>
+
+#include <opencv2/opencv.hpp>
+#include <fuzzer/FuzzedDataProvider.h>
+
+extern "C" int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size) {
+  const int kMaxXResolution = 6000;
+  const int kMaxYResolution = 6000;
+  const int kMaxLineThickness = 10;
+  const double kMaxFontScale = 10.0;
+
+  FuzzedDataProvider fuzz_provider(data, size);
+
+  int fuzz_font_face = fuzz_provider.PickValueInArray(
+      {cv::FONT_HERSHEY_SIMPLEX, cv::FONT_HERSHEY_PLAIN,
+       cv::FONT_HERSHEY_DUPLEX, cv::FONT_HERSHEY_COMPLEX,
+       cv::FONT_HERSHEY_TRIPLEX, cv::FONT_HERSHEY_COMPLEX_SMALL,
+       cv::FONT_HERSHEY_SCRIPT_SIMPLEX, cv::FONT_HERSHEY_SCRIPT_COMPLEX});
+
+  int fuzz_linetype = fuzz_provider.PickValueInArray({
+      cv::LINE_8,     // 8-connected line
+      cv::LINE_4,     // 4-connected line
+      cv::LINE_AA     // anti-aliased line
+  });
+
+  double fuzz_font_scale =
+      fuzz_provider.ConsumeFloatingPointInRange(0.0, kMaxFontScale);
+  int fuzz_width =
+      fuzz_provider.ConsumeIntegralInRange<int>(0, kMaxXResolution);
+  int fuzz_height =
+      fuzz_provider.ConsumeIntegralInRange<int>(0, kMaxYResolution);
+  int fuzz_x_pos =
+      fuzz_provider.ConsumeIntegralInRange<int>(0, kMaxXResolution);
+  int fuzz_y_pos =
+      fuzz_provider.ConsumeIntegralInRange<int>(0, kMaxYResolution);
+  int fuzz_thickness =
+      fuzz_provider.ConsumeIntegralInRange<int>(0, kMaxLineThickness);
+
+  std::vector<uint8_t> color_scalar_vals;
+  std::vector<uint8_t> canvas_fill_scalar_vals;
+
+  // Ensure that all 3D vectors are fully populated,
+  // even if fuzz_provider is exhausted.
+  for (int i = 0; i < 3; i++) {
+    color_scalar_vals.insert(color_scalar_vals.begin(),
+                             fuzz_provider.ConsumeIntegralInRange(0, 255));
+    canvas_fill_scalar_vals.insert(
+        canvas_fill_scalar_vals.begin(),
+        fuzz_provider.ConsumeIntegralInRange(0, 255));
+  }
+
+  cv::Scalar fuzz_color(color_scalar_vals[0], color_scalar_vals[1],
+                        color_scalar_vals[2]);
+  cv::Scalar fuzz_canvas_fill(canvas_fill_scalar_vals[0],
+                              canvas_fill_scalar_vals[1],
+                              canvas_fill_scalar_vals[2]);
+
+  cv::Point fuzz_text_pos(fuzz_x_pos, fuzz_y_pos);
+  cv::Mat fuzz_canvas(fuzz_height, fuzz_width, CV_8UC3, fuzz_canvas_fill);
+
+  std::basic_string<char> fuzz_annotation =
+      fuzz_provider.ConsumeRemainingBytesAsString();
+
+  cv::putText(fuzz_canvas, fuzz_annotation, fuzz_text_pos, fuzz_font_face,
+              fuzz_font_scale, fuzz_color, fuzz_thickness, fuzz_linetype);
+  return 0;
+}