Commit a8b956227b62eec6f729064724c8c4775a96bbae
2016-03-01T09:37:12
[ftfuzzer] Add unit for testing smooth and black rasterizers. * src/tools/ftfuzzer/rasterfuzzer.cc: New file.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138
diff --git a/ChangeLog b/ChangeLog
index c0b20b9..b827992 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,4 +1,11 @@
2016-03-01 Werner Lemberg <wl@gnu.org>
+ Kostya Serebryany <kcc@google.com>
+
+ [ftfuzzer] Add unit for testing smooth and black rasterizers.
+
+ * src/tools/ftfuzzer/rasterfuzzer.cc: New file.
+
+2016-03-01 Werner Lemberg <wl@gnu.org>
[autofit] Fix reallocation error introduced in 2016-02-27 (#47310).
diff --git a/src/tools/ftfuzzer/rasterfuzzer.cc b/src/tools/ftfuzzer/rasterfuzzer.cc
new file mode 100644
index 0000000..37cc754
--- /dev/null
+++ b/src/tools/ftfuzzer/rasterfuzzer.cc
@@ -0,0 +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
diff --git a/src/tools/ftfuzzer/runinput.cc b/src/tools/ftfuzzer/runinput.cc
index 8fa75ad..d5f9f15 100644
--- 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.