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
8 #include "core/fxcodec/codec/ccodec_faxmodule.h"
9 #include "core/fxcodec/codec/ccodec_scanlinedecoder.h"
10
GetInteger(const uint8_t * data)11 static int GetInteger(const uint8_t* data) {
12 return data[0] | data[1] << 8 | data[2] << 16 | data[3] << 24;
13 }
14
LLVMFuzzerTestOneInput(const uint8_t * data,size_t size)15 extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size) {
16 const int kParameterSize = 21;
17 if (size < kParameterSize)
18 return 0;
19
20 int width = GetInteger(data);
21 int height = GetInteger(data + 4);
22 int K = GetInteger(data + 8);
23 int Columns = GetInteger(data + 12);
24 int Rows = GetInteger(data + 16);
25 bool EndOfLine = !(data[20] & 0x01);
26 bool ByteAlign = !(data[20] & 0x02);
27 bool BlackIs1 = !(data[20] & 0x04);
28 data += kParameterSize;
29 size -= kParameterSize;
30
31 CCodec_FaxModule fax_module;
32 std::unique_ptr<CCodec_ScanlineDecoder> decoder(
33 fax_module.CreateDecoder(data, size, width, height, K, EndOfLine,
34 ByteAlign, BlackIs1, Columns, Rows));
35
36 if (decoder) {
37 int line = 0;
38 while (decoder->GetScanline(line))
39 line++;
40 }
41
42 return 0;
43 }
44