ref: a8b956227b62eec6f729064724c8c4775a96bbae
parent: 3eb6f66a37c2c6aa34bbd30eec2c9d1eb50b1ddb
author: Werner Lemberg <[email protected]>
date: Tue Mar 1 04:37:12 EST 2016
[ftfuzzer] Add unit for testing smooth and black rasterizers. * src/tools/ftfuzzer/rasterfuzzer.cc: New file.
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,4 +1,11 @@
2016-03-01 Werner Lemberg <[email protected]>
+ Kostya Serebryany <[email protected]>
+
+ [ftfuzzer] Add unit for testing smooth and black rasterizers.
+
+ * src/tools/ftfuzzer/rasterfuzzer.cc: New file.
+
+2016-03-01 Werner Lemberg <[email protected]>
[autofit] Fix reallocation error introduced in 2016-02-27 (#47310).
--- /dev/null
+++ b/src/tools/ftfuzzer/rasterfuzzer.cc
@@ -1,0 +1,104 @@
+// rasterfuzzer.cc
+//
+// A fuzzing function to test FreeType's rasterizers with libFuzzer.
+//
+// Copyright 2016 by
+// David Turner, Robert Wilhelm, and Werner Lemberg.
+//
+// This file is part of the FreeType project, and may only be used,
+// modified, and distributed under the terms of the FreeType project
+// license, LICENSE.TXT. By continuing to use, modify, or distribute
+// this file you indicate that you have read the license and
+// understand and accept it fully.
+
+
+#include <stdint.h>
+
+#include <vector>
+
+
+ using namespace std;
+
+
+#include <ft2build.h>
+
+#include FT_FREETYPE_H
+#include FT_IMAGE_H
+#include FT_OUTLINE_H
+
+
+ static FT_Library library;
+ static int InitResult;
+
+
+ struct FT_Global {+ FT_Global() {+ InitResult = FT_Init_FreeType( &library );
+ }
+ ~FT_Global() {+ FT_Done_FreeType( library );
+ }
+ };
+
+ FT_Global global_ft;
+
+
+ extern "C" int
+ LLVMFuzzerTestOneInput( const uint8_t* data,
+ size_t size_ )
+ {+ unsigned char pixels[4];
+
+ FT_Bitmap bitmap_mono = {+ 1, // rows
+ 1, // width
+ 4, // pitch
+ pixels, // buffer
+ 2, // num_grays
+ FT_PIXEL_MODE_MONO, // pixel_mode
+ 0, // palette_mode
+ NULL // palette
+ };
+
+ FT_Bitmap bitmap_gray = {+ 1, // rows
+ 1, // width
+ 4, // pitch
+ pixels, // buffer
+ 256, // num_grays
+ FT_PIXEL_MODE_GRAY, // pixel_mode
+ 0, // palette_mode
+ NULL // palette
+ };
+
+ short n_points = short( size_ / sizeof ( FT_Vector ) );
+ if ( n_points <= 2 )
+ return 0;
+
+ FT_Vector* points = reinterpret_cast<FT_Vector*>(
+ const_cast<uint8_t*>( data ) );
+
+ short contours[1];
+ contours[0] = n_points - 1;
+
+ vector<char> tags( (size_t)n_points );
+ fill( tags.begin(), tags.end(), 1 );
+
+ FT_Outline outline =
+ {+ 1, // n_contours
+ n_points, // n_points
+ points, // points
+ reinterpret_cast<char*>( tags.data() ), // tags
+ contours, // contours
+ FT_OUTLINE_NONE // flags
+ };
+
+ FT_Outline_Get_Bitmap( library, &outline, &bitmap_mono );
+ FT_Outline_Get_Bitmap( library, &outline, &bitmap_gray );
+
+ return 0;
+ }
+
+
+// END
--- a/src/tools/ftfuzzer/runinput.cc
+++ b/src/tools/ftfuzzer/runinput.cc
@@ -1,6 +1,6 @@
// runinput.cc
//
-// A `main' function for `ftfuzzer.cc'.
+// A `main' function for fuzzers like `ftfuzzer.cc'.
//
// Copyright 2015-2016 by
// David Turner, Robert Wilhelm, and Werner Lemberg.