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
|
/*
* Copyright 2023 Axel Waggershauser
*/
// SPDX-License-Identifier: Apache-2.0
#include "ReadBarcode.h"
#include <csignal>
#include <cstddef>
#include <cstdint>
#include <cstdlib>
using namespace ZXing;
uint64_t Expand(uint8_t b)
{
uint64_t shift = 0x0000040810204081ul; // bits set: 0, 7, 14, 21, 28, 35, 42
uint64_t mask = 0x0001010101010101ul; // bits set: 0, 8, 16, 24, 32, 40, 48
return ((uint64_t)(b & 127) * shift & mask) | (uint64_t)(b & 128) << 49;
}
extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size)
{
if (size < 3)
return 0;
static auto opts = ReaderOptions()
.setFormats(BarcodeFormat::MatrixCodes)
.setBinarizer(Binarizer::BoolCast)
.setReturnErrors(true)
.setTryInvert(false)
.setTryRotate(false);
int ratio = data[0] + 1;
int nBits = (size - 1) * 8;
int width = std::clamp(nBits * ratio / 256, 1, nBits);
int height = std::clamp(nBits / width, 1, nBits);
assert(width * height <= nBits);
ByteArray buffer(nBits);
for (size_t i = 1; i < size; ++i)
*reinterpret_cast<uint64_t*>(&buffer[(i - 1) * 8]) = Expand(data[i]);
#ifdef PRINT_DEBUG
printf("s: %zu, r: %d, n: %d -> %d x %d\n", size, ratio, nBits, width, height);
#endif
auto image = ImageView(buffer.data(), width, height, ImageFormat::Lum);
auto res = ReadBarcodes(image, opts);
#ifdef PRINT_DEBUG
for (const auto& r : res)
printf("%s: %s / %s\n", ToString(r.format()).c_str(), r.text().c_str(), ToString(r.error()).c_str());
#endif
static int detectedSybols = 0;
detectedSybols += Size(res);
if (!res.empty() && detectedSybols % 100 == 0)
printf("detected barcode symbols: %d\n", detectedSybols);
return 0;
}
|
