1 /*
2 * Copyright 2018 Google, LLC
3 *
4 * Use of this source code is governed by a BSD-style license that can be
5 * found in the LICENSE file.
6 */
7
8 #include "include/core/SkCanvas.h"
9 #include "include/core/SkData.h"
10 #include "include/core/SkImage.h"
11 #include "include/core/SkPaint.h"
12 #include "include/core/SkSurface.h"
13
FuzzImageDecode(const uint8_t * data,size_t size)14 bool FuzzImageDecode(const uint8_t *data, size_t size) {
15 auto img = SkImages::DeferredFromEncodedData(SkData::MakeWithoutCopy(data, size));
16 if (nullptr == img.get()) {
17 return false;
18 }
19
20 auto s = SkSurfaces::Raster(SkImageInfo::MakeN32Premul(128, 128));
21 if (!s) {
22 // May return nullptr in memory-constrained fuzzing environments
23 return false;
24 }
25
26 s->getCanvas()->drawImage(img, 0, 0);
27 return true;
28 }
29
30 #if defined(SK_BUILD_FOR_LIBFUZZER)
LLVMFuzzerTestOneInput(const uint8_t * data,size_t size)31 extern "C" int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size) {
32 if (size > 10240) {
33 return 0;
34 }
35 FuzzImageDecode(data, size);
36 return 0;
37 }
38 #endif
39