1 // Copyright 2016 The PDFium Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file.
4
5 #include <cstdint>
6 #include <memory>
7 #include <vector>
8
9 #include "core/fxcodec/codec/codec_int.h"
10 #include "core/fxge/fx_dib.h"
11
12 CCodec_JpxModule g_module;
13
14 struct DecoderDeleter {
operator ()DecoderDeleter15 void operator()(CJPX_Decoder* decoder) { g_module.DestroyDecoder(decoder); }
16 };
17
LLVMFuzzerTestOneInput(const uint8_t * data,size_t size)18 extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size) {
19 std::unique_ptr<CJPX_Decoder, DecoderDeleter> decoder(
20 g_module.CreateDecoder(data, size, nullptr));
21 if (!decoder)
22 return 0;
23
24 uint32_t width;
25 uint32_t height;
26 uint32_t components;
27 g_module.GetImageInfo(decoder.get(), &width, &height, &components);
28
29 FXDIB_Format format;
30 if (components == 1) {
31 format = FXDIB_8bppRgb;
32 } else if (components <= 3) {
33 format = FXDIB_Rgb;
34 } else if (components == 4) {
35 format = FXDIB_Rgb32;
36 } else {
37 width = (width * components + 2) / 3;
38 format = FXDIB_Rgb;
39 }
40
41 std::unique_ptr<CFX_DIBitmap> bitmap(new CFX_DIBitmap);
42 if (!bitmap->Create(width, height, format))
43 return 0;
44
45 std::vector<uint8_t> output_offsets(components);
46 for (uint32_t i = 0; i < components; ++i)
47 output_offsets[i] = i;
48
49 g_module.Decode(decoder.get(), bitmap->GetBuffer(), bitmap->GetPitch(),
50 output_offsets);
51 return 0;
52 }
53