generic-library/zxing-cpp
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Benjamin Dobell
2014-12-16 20:16:34 +11:00
commit b80a24cc6e
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/*
* Copyright 2010-2011 ZXing authors
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include "ImageReaderSource.h"
#include <zxing/common/IllegalArgumentException.h>
#include <iostream>
#include <sstream>
#include <cstdlib>
#include <algorithm>
#include "lodepng.h"
#include "jpgd.h"
using std::string;
using std::ostringstream;
using zxing::Ref;
using zxing::ArrayRef;
using zxing::LuminanceSource;
inline char ImageReaderSource::convertPixel(char const* pixel_) const {
unsigned char const* pixel = (unsigned char const*)pixel_;
if (comps == 1 || comps == 2) {
// Gray or gray+alpha
return pixel[0];
} if (comps == 3 || comps == 4) {
// Red, Green, Blue, (Alpha)
// We assume 16 bit values here
// 0x200 = 1<<9, half an lsb of the result to force rounding
return (char)((306 * (int)pixel[0] + 601 * (int)pixel[1] +
117 * (int)pixel[2] + 0x200) >> 10);
} else {
throw zxing::IllegalArgumentException("Unexpected image depth");
}
}
ImageReaderSource::ImageReaderSource(ArrayRef<char> image_, int width, int height, int comps_)
: Super(width, height), image(image_), comps(comps_) {}
Ref<LuminanceSource> ImageReaderSource::create(string const& filename) {
string extension = filename.substr(filename.find_last_of(".") + 1);
std::transform(extension.begin(), extension.end(), extension.begin(), ::tolower);
int width, height;
int comps = 0;
zxing::ArrayRef<char> image;
if (extension == "png") {
std::vector<unsigned char> out;
{ unsigned w, h;
unsigned error = lodepng::decode(out, w, h, filename);
if (error) {
ostringstream msg;
msg << "Error while loading '" << lodepng_error_text(error) << "'";
throw zxing::IllegalArgumentException(msg.str().c_str());
}
width = w;
height = h;
}
comps = 4;
image = zxing::ArrayRef<char>(4 * width * height);
memcpy(&image[0], &out[0], image->size());
} else if (extension == "jpg" || extension == "jpeg") {
char *buffer = reinterpret_cast<char*>(jpgd::decompress_jpeg_image_from_file(
filename.c_str(), &width, &height, &comps, 4));
image = zxing::ArrayRef<char>(buffer, 4 * width * height);
}
if (!image) {
ostringstream msg;
msg << "Loading \"" << filename << "\" failed.";
throw zxing::IllegalArgumentException(msg.str().c_str());
}
return Ref<LuminanceSource>(new ImageReaderSource(image, width, height, comps));
}
zxing::ArrayRef<char> ImageReaderSource::getRow(int y, zxing::ArrayRef<char> row) const {
const char* pixelRow = &image[0] + y * getWidth() * 4;
if (!row) {
row = zxing::ArrayRef<char>(getWidth());
}
for (int x = 0; x < getWidth(); x++) {
row[x] = convertPixel(pixelRow + (x * 4));
}
return row;
}
/** This is a more efficient implementation. */
zxing::ArrayRef<char> ImageReaderSource::getMatrix() const {
const char* p = &image[0];
zxing::ArrayRef<char> matrix(getWidth() * getHeight());
char* m = &matrix[0];
for (int y = 0; y < getHeight(); y++) {
for (int x = 0; x < getWidth(); x++) {
*m = convertPixel(p);
m++;
p += 4;
}
}
return matrix;
}

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// -*- mode:c++; tab-width:2; indent-tabs-mode:nil; c-basic-offset:2 -*-
#ifndef __IMAGE_READER_SOURCE_H_
#define __IMAGE_READER_SOURCE_H_
/*
* Copyright 2010-2011 ZXing authors
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include <zxing/LuminanceSource.h>
class ImageReaderSource : public zxing::LuminanceSource {
private:
typedef LuminanceSource Super;
const zxing::ArrayRef<char> image;
const int comps;
char convertPixel(const char* pixel) const;
public:
static zxing::Ref<LuminanceSource> create(std::string const& filename);
ImageReaderSource(zxing::ArrayRef<char> image, int width, int height, int comps);
zxing::ArrayRef<char> getRow(int y, zxing::ArrayRef<char> row) const;
zxing::ArrayRef<char> getMatrix() const;
};
#endif /* __IMAGE_READER_SOURCE_H_ */

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// jpgd.h - C++ class for JPEG decompression.
// Public domain, Rich Geldreich <richgel99@gmail.com>
#ifndef JPEG_DECODER_H
#define JPEG_DECODER_H
#include <stdlib.h>
#include <stdio.h>
#include <setjmp.h>
#ifdef _MSC_VER
#define JPGD_NORETURN __declspec(noreturn)
#elif defined(__GNUC__)
#define JPGD_NORETURN __attribute__ ((noreturn))
#else
#define JPGD_NORETURN
#endif
namespace jpgd
{
typedef unsigned char uint8;
typedef signed short int16;
typedef unsigned short uint16;
typedef unsigned int uint;
typedef signed int int32;
// Loads a JPEG image from a memory buffer or a file.
// req_comps can be 1 (grayscale), 3 (RGB), or 4 (RGBA).
// On return, width/height will be set to the image's dimensions, and actual_comps will be set to the either 1 (grayscale) or 3 (RGB).
// Notes: For more control over where and how the source data is read, see the decompress_jpeg_image_from_stream() function below, or call the jpeg_decoder class directly.
// Requesting a 8 or 32bpp image is currently a little faster than 24bpp because the jpeg_decoder class itself currently always unpacks to either 8 or 32bpp.
unsigned char *decompress_jpeg_image_from_memory(const unsigned char *pSrc_data, int src_data_size, int *width, int *height, int *actual_comps, int req_comps);
unsigned char *decompress_jpeg_image_from_file(const char *pSrc_filename, int *width, int *height, int *actual_comps, int req_comps);
// Success/failure error codes.
enum jpgd_status
{
JPGD_SUCCESS = 0, JPGD_FAILED = -1, JPGD_DONE = 1,
JPGD_BAD_DHT_COUNTS = -256, JPGD_BAD_DHT_INDEX, JPGD_BAD_DHT_MARKER, JPGD_BAD_DQT_MARKER, JPGD_BAD_DQT_TABLE,
JPGD_BAD_PRECISION, JPGD_BAD_HEIGHT, JPGD_BAD_WIDTH, JPGD_TOO_MANY_COMPONENTS,
JPGD_BAD_SOF_LENGTH, JPGD_BAD_VARIABLE_MARKER, JPGD_BAD_DRI_LENGTH, JPGD_BAD_SOS_LENGTH,
JPGD_BAD_SOS_COMP_ID, JPGD_W_EXTRA_BYTES_BEFORE_MARKER, JPGD_NO_ARITHMITIC_SUPPORT, JPGD_UNEXPECTED_MARKER,
JPGD_NOT_JPEG, JPGD_UNSUPPORTED_MARKER, JPGD_BAD_DQT_LENGTH, JPGD_TOO_MANY_BLOCKS,
JPGD_UNDEFINED_QUANT_TABLE, JPGD_UNDEFINED_HUFF_TABLE, JPGD_NOT_SINGLE_SCAN, JPGD_UNSUPPORTED_COLORSPACE,
JPGD_UNSUPPORTED_SAMP_FACTORS, JPGD_DECODE_ERROR, JPGD_BAD_RESTART_MARKER, JPGD_ASSERTION_ERROR,
JPGD_BAD_SOS_SPECTRAL, JPGD_BAD_SOS_SUCCESSIVE, JPGD_STREAM_READ, JPGD_NOTENOUGHMEM
};
// Input stream interface.
// Derive from this class to read input data from sources other than files or memory. Set m_eof_flag to true when no more data is available.
// The decoder is rather greedy: it will keep on calling this method until its internal input buffer is full, or until the EOF flag is set.
// It the input stream contains data after the JPEG stream's EOI (end of image) marker it will probably be pulled into the internal buffer.
// Call the get_total_bytes_read() method to determine the actual size of the JPEG stream after successful decoding.
class jpeg_decoder_stream
{
public:
jpeg_decoder_stream() { }
virtual ~jpeg_decoder_stream() { }
// The read() method is called when the internal input buffer is empty.
// Parameters:
// pBuf - input buffer
// max_bytes_to_read - maximum bytes that can be written to pBuf
// pEOF_flag - set this to true if at end of stream (no more bytes remaining)
// Returns -1 on error, otherwise return the number of bytes actually written to the buffer (which may be 0).
// Notes: This method will be called in a loop until you set *pEOF_flag to true or the internal buffer is full.
virtual int read(uint8 *pBuf, int max_bytes_to_read, bool *pEOF_flag) = 0;
};
// stdio FILE stream class.
class jpeg_decoder_file_stream : public jpeg_decoder_stream
{
jpeg_decoder_file_stream(const jpeg_decoder_file_stream &);
jpeg_decoder_file_stream &operator =(const jpeg_decoder_file_stream &);
FILE *m_pFile;
bool m_eof_flag, m_error_flag;
public:
jpeg_decoder_file_stream();
virtual ~jpeg_decoder_file_stream();
bool open(const char *Pfilename);
void close();
virtual int read(uint8 *pBuf, int max_bytes_to_read, bool *pEOF_flag);
};
// Memory stream class.
class jpeg_decoder_mem_stream : public jpeg_decoder_stream
{
const uint8 *m_pSrc_data;
uint m_ofs, m_size;
public:
jpeg_decoder_mem_stream() : m_pSrc_data(NULL), m_ofs(0), m_size(0) { }
jpeg_decoder_mem_stream(const uint8 *pSrc_data, uint size) : m_pSrc_data(pSrc_data), m_ofs(0), m_size(size) { }
virtual ~jpeg_decoder_mem_stream() { }
bool open(const uint8 *pSrc_data, uint size);
void close() { m_pSrc_data = NULL; m_ofs = 0; m_size = 0; }
virtual int read(uint8 *pBuf, int max_bytes_to_read, bool *pEOF_flag);
};
// Loads JPEG file from a jpeg_decoder_stream.
unsigned char *decompress_jpeg_image_from_stream(jpeg_decoder_stream *pStream, int *width, int *height, int *actual_comps, int req_comps);
enum
{
JPGD_IN_BUF_SIZE = 8192, JPGD_MAX_BLOCKS_PER_MCU = 10, JPGD_MAX_HUFF_TABLES = 8, JPGD_MAX_QUANT_TABLES = 4,
JPGD_MAX_COMPONENTS = 4, JPGD_MAX_COMPS_IN_SCAN = 4, JPGD_MAX_BLOCKS_PER_ROW = 8192, JPGD_MAX_HEIGHT = 16384, JPGD_MAX_WIDTH = 16384
};
typedef int16 jpgd_quant_t;
typedef int16 jpgd_block_t;
class jpeg_decoder
{
public:
// Call get_error_code() after constructing to determine if the stream is valid or not. You may call the get_width(), get_height(), etc.
// methods after the constructor is called. You may then either destruct the object, or begin decoding the image by calling begin_decoding(), then decode() on each scanline.
jpeg_decoder(jpeg_decoder_stream *pStream);
~jpeg_decoder();
// Call this method after constructing the object to begin decompression.
// If JPGD_SUCCESS is returned you may then call decode() on each scanline.
int begin_decoding();
// Returns the next scan line.
// For grayscale images, pScan_line will point to a buffer containing 8-bit pixels (get_bytes_per_pixel() will return 1).
// Otherwise, it will always point to a buffer containing 32-bit RGBA pixels (A will always be 255, and get_bytes_per_pixel() will return 4).
// Returns JPGD_SUCCESS if a scan line has been returned.
// Returns JPGD_DONE if all scan lines have been returned.
// Returns JPGD_FAILED if an error occurred. Call get_error_code() for a more info.
int decode(const void** pScan_line, uint* pScan_line_len);
inline jpgd_status get_error_code() const { return m_error_code; }
inline int get_width() const { return m_image_x_size; }
inline int get_height() const { return m_image_y_size; }
inline int get_num_components() const { return m_comps_in_frame; }
inline int get_bytes_per_pixel() const { return m_dest_bytes_per_pixel; }
inline int get_bytes_per_scan_line() const { return m_image_x_size * get_bytes_per_pixel(); }
// Returns the total number of bytes actually consumed by the decoder (which should equal the actual size of the JPEG file).
inline int get_total_bytes_read() const { return m_total_bytes_read; }
private:
jpeg_decoder(const jpeg_decoder &);
jpeg_decoder &operator =(const jpeg_decoder &);
typedef void (*pDecode_block_func)(jpeg_decoder *, int, int, int);
struct huff_tables
{
bool ac_table;
uint look_up[256];
uint look_up2[256];
uint8 code_size[256];
uint tree[512];
};
struct coeff_buf
{
uint8 *pData;
int block_num_x, block_num_y;
int block_len_x, block_len_y;
int block_size;
};
struct mem_block
{
mem_block *m_pNext;
size_t m_used_count;
size_t m_size;
char m_data[1];
};
jmp_buf m_jmp_state;
mem_block *m_pMem_blocks;
int m_image_x_size;
int m_image_y_size;
jpeg_decoder_stream *m_pStream;
int m_progressive_flag;
uint8 m_huff_ac[JPGD_MAX_HUFF_TABLES];
uint8* m_huff_num[JPGD_MAX_HUFF_TABLES]; // pointer to number of Huffman codes per bit size
uint8* m_huff_val[JPGD_MAX_HUFF_TABLES]; // pointer to Huffman codes per bit size
jpgd_quant_t* m_quant[JPGD_MAX_QUANT_TABLES]; // pointer to quantization tables
int m_scan_type; // Gray, Yh1v1, Yh1v2, Yh2v1, Yh2v2 (CMYK111, CMYK4114 no longer supported)
int m_comps_in_frame; // # of components in frame
int m_comp_h_samp[JPGD_MAX_COMPONENTS]; // component's horizontal sampling factor
int m_comp_v_samp[JPGD_MAX_COMPONENTS]; // component's vertical sampling factor
int m_comp_quant[JPGD_MAX_COMPONENTS]; // component's quantization table selector
int m_comp_ident[JPGD_MAX_COMPONENTS]; // component's ID
int m_comp_h_blocks[JPGD_MAX_COMPONENTS];
int m_comp_v_blocks[JPGD_MAX_COMPONENTS];
int m_comps_in_scan; // # of components in scan
int m_comp_list[JPGD_MAX_COMPS_IN_SCAN]; // components in this scan
int m_comp_dc_tab[JPGD_MAX_COMPONENTS]; // component's DC Huffman coding table selector
int m_comp_ac_tab[JPGD_MAX_COMPONENTS]; // component's AC Huffman coding table selector
int m_spectral_start; // spectral selection start
int m_spectral_end; // spectral selection end
int m_successive_low; // successive approximation low
int m_successive_high; // successive approximation high
int m_max_mcu_x_size; // MCU's max. X size in pixels
int m_max_mcu_y_size; // MCU's max. Y size in pixels
int m_blocks_per_mcu;
int m_max_blocks_per_row;
int m_mcus_per_row, m_mcus_per_col;
int m_mcu_org[JPGD_MAX_BLOCKS_PER_MCU];
int m_total_lines_left; // total # lines left in image
int m_mcu_lines_left; // total # lines left in this MCU
int m_real_dest_bytes_per_scan_line;
int m_dest_bytes_per_scan_line; // rounded up
int m_dest_bytes_per_pixel; // 4 (RGB) or 1 (Y)
huff_tables* m_pHuff_tabs[JPGD_MAX_HUFF_TABLES];
coeff_buf* m_dc_coeffs[JPGD_MAX_COMPONENTS];
coeff_buf* m_ac_coeffs[JPGD_MAX_COMPONENTS];
int m_eob_run;
int m_block_y_mcu[JPGD_MAX_COMPONENTS];
uint8* m_pIn_buf_ofs;
int m_in_buf_left;
int m_tem_flag;
bool m_eof_flag;
uint8 m_in_buf_pad_start[128];
uint8 m_in_buf[JPGD_IN_BUF_SIZE + 128];
uint8 m_in_buf_pad_end[128];
int m_bits_left;
uint m_bit_buf;
int m_restart_interval;
int m_restarts_left;
int m_next_restart_num;
int m_max_mcus_per_row;
int m_max_blocks_per_mcu;
int m_expanded_blocks_per_mcu;
int m_expanded_blocks_per_row;
int m_expanded_blocks_per_component;
bool m_freq_domain_chroma_upsample;
int m_max_mcus_per_col;
uint m_last_dc_val[JPGD_MAX_COMPONENTS];
jpgd_block_t* m_pMCU_coefficients;
int m_mcu_block_max_zag[JPGD_MAX_BLOCKS_PER_MCU];
uint8* m_pSample_buf;
int m_crr[256];
int m_cbb[256];
int m_crg[256];
int m_cbg[256];
uint8* m_pScan_line_0;
uint8* m_pScan_line_1;
jpgd_status m_error_code;
bool m_ready_flag;
int m_total_bytes_read;
void free_all_blocks();
JPGD_NORETURN void stop_decoding(jpgd_status status);
void *alloc(size_t n, bool zero = false);
void word_clear(void *p, uint16 c, uint n);
void prep_in_buffer();
void read_dht_marker();
void read_dqt_marker();
void read_sof_marker();
void skip_variable_marker();
void read_dri_marker();
void read_sos_marker();
int next_marker();
int process_markers();
void locate_soi_marker();
void locate_sof_marker();
int locate_sos_marker();
void init(jpeg_decoder_stream * pStream);
void create_look_ups();
void fix_in_buffer();
void transform_mcu(int mcu_row);
void transform_mcu_expand(int mcu_row);
coeff_buf* coeff_buf_open(int block_num_x, int block_num_y, int block_len_x, int block_len_y);
inline jpgd_block_t *coeff_buf_getp(coeff_buf *cb, int block_x, int block_y);
void load_next_row();
void decode_next_row();
void make_huff_table(int index, huff_tables *pH);
void check_quant_tables();
void check_huff_tables();
void calc_mcu_block_order();
int init_scan();
void init_frame();
void process_restart();
void decode_scan(pDecode_block_func decode_block_func);
void init_progressive();
void init_sequential();
void decode_start();
void decode_init(jpeg_decoder_stream * pStream);
void H2V2Convert();
void H2V1Convert();
void H1V2Convert();
void H1V1Convert();
void gray_convert();
void expanded_convert();
void find_eoi();
inline uint get_char();
inline uint get_char(bool *pPadding_flag);
inline void stuff_char(uint8 q);
inline uint8 get_octet();
inline uint get_bits(int num_bits);
inline uint get_bits_no_markers(int numbits);
inline int huff_decode(huff_tables *pH);
inline int huff_decode(huff_tables *pH, int& extrabits);
static inline uint8 clamp(int i);
static void decode_block_dc_first(jpeg_decoder *pD, int component_id, int block_x, int block_y);
static void decode_block_dc_refine(jpeg_decoder *pD, int component_id, int block_x, int block_y);
static void decode_block_ac_first(jpeg_decoder *pD, int component_id, int block_x, int block_y);
static void decode_block_ac_refine(jpeg_decoder *pD, int component_id, int block_x, int block_y);
};
} // namespace jpgd
#endif // JPEG_DECODER_H

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// -*- mode:c++; tab-width:2; indent-tabs-mode:nil; c-basic-offset:2 -*-
/*
* Copyright 2010-2011 ZXing authors
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include <iostream>
#include <fstream>
#include <string>
#include "ImageReaderSource.h"
#include <zxing/common/Counted.h>
#include <zxing/Binarizer.h>
#include <zxing/MultiFormatReader.h>
#include <zxing/Result.h>
#include <zxing/ReaderException.h>
#include <zxing/common/GlobalHistogramBinarizer.h>
#include <zxing/common/HybridBinarizer.h>
#include <exception>
#include <zxing/Exception.h>
#include <zxing/common/IllegalArgumentException.h>
#include <zxing/BinaryBitmap.h>
#include <zxing/DecodeHints.h>
#include <zxing/qrcode/QRCodeReader.h>
#include <zxing/multi/qrcode/QRCodeMultiReader.h>
#include <zxing/multi/ByQuadrantReader.h>
#include <zxing/multi/MultipleBarcodeReader.h>
#include <zxing/multi/GenericMultipleBarcodeReader.h>
using namespace std;
using namespace zxing;
using namespace zxing::multi;
using namespace zxing::qrcode;
namespace {
bool more = false;
bool test_mode = false;
bool try_harder = false;
bool search_multi = false;
bool use_hybrid = false;
bool use_global = false;
bool verbose = false;
}
vector<Ref<Result> > decode(Ref<BinaryBitmap> image, DecodeHints hints) {
Ref<Reader> reader(new MultiFormatReader);
return vector<Ref<Result> >(1, reader->decode(image, hints));
}
vector<Ref<Result> > decode_multi(Ref<BinaryBitmap> image, DecodeHints hints) {
MultiFormatReader delegate;
GenericMultipleBarcodeReader reader(delegate);
return reader.decodeMultiple(image, hints);
}
int read_image(Ref<LuminanceSource> source, bool hybrid, string expected) {
vector<Ref<Result> > results;
string cell_result;
int res = -1;
try {
Ref<Binarizer> binarizer;
if (hybrid) {
binarizer = new HybridBinarizer(source);
} else {
binarizer = new GlobalHistogramBinarizer(source);
}
DecodeHints hints(DecodeHints::DEFAULT_HINT);
hints.setTryHarder(try_harder);
Ref<BinaryBitmap> binary(new BinaryBitmap(binarizer));
if (search_multi) {
results = decode_multi(binary, hints);
} else {
results = decode(binary, hints);
}
res = 0;
} catch (const ReaderException& e) {
cell_result = "zxing::ReaderException: " + string(e.what());
res = -2;
} catch (const zxing::IllegalArgumentException& e) {
cell_result = "zxing::IllegalArgumentException: " + string(e.what());
res = -3;
} catch (const zxing::Exception& e) {
cell_result = "zxing::Exception: " + string(e.what());
res = -4;
} catch (const std::exception& e) {
cell_result = "std::exception: " + string(e.what());
res = -5;
}
if (test_mode && results.size() == 1) {
std::string result = results[0]->getText()->getText();
if (expected.empty()) {
cout << " Expected text or binary data for image missing." << endl
<< " Detected: " << result << endl;
res = -6;
} else {
if (expected.compare(result) != 0) {
cout << " Expected: " << expected << endl
<< " Detected: " << result << endl;
cell_result = "data did not match";
res = -6;
}
}
}
if (res != 0 && (verbose || (use_global ^ use_hybrid))) {
cout << (hybrid ? "Hybrid" : "Global")
<< " binarizer failed: " << cell_result << endl;
} else if (!test_mode) {
if (verbose) {
cout << (hybrid ? "Hybrid" : "Global")
<< " binarizer succeeded: " << endl;
}
for (size_t i = 0; i < results.size(); i++) {
if (more) {
cout << " Format: "
<< BarcodeFormat::barcodeFormatNames[results[i]->getBarcodeFormat()]
<< endl;
for (int j = 0; j < results[i]->getResultPoints()->size(); j++) {
cout << " Point[" << j << "]: "
<< results[i]->getResultPoints()[j]->getX() << " "
<< results[i]->getResultPoints()[j]->getY() << endl;
}
}
if (verbose) {
cout << " ";
}
cout << results[i]->getText()->getText() << endl;
}
}
return res;
}
string read_expected(string imagefilename) {
string textfilename = imagefilename;
string::size_type dotpos = textfilename.rfind(".");
textfilename.replace(dotpos + 1, textfilename.length() - dotpos - 1, "txt");
ifstream textfile(textfilename.c_str(), ios::binary);
textfilename.replace(dotpos + 1, textfilename.length() - dotpos - 1, "bin");
ifstream binfile(textfilename.c_str(), ios::binary);
ifstream *file = 0;
if (textfile.is_open()) {
file = &textfile;
} else if (binfile.is_open()) {
file = &binfile;
} else {
return std::string();
}
file->seekg(0, ios_base::end);
size_t size = size_t(file->tellg());
file->seekg(0, ios_base::beg);
if (size == 0) {
return std::string();
}
char* data = new char[size + 1];
file->read(data, size);
data[size] = '\0';
string expected(data);
delete[] data;
return expected;
}
int main(int argc, char** argv) {
if (argc <= 1) {
cout << "Usage: " << argv[0] << " [OPTION]... <IMAGE>..." << endl
<< "Read barcodes from each IMAGE file." << endl
<< endl
<< "Options:" << endl
<< " (-h|--hybrid) use the hybrid binarizer (default)" << endl
<< " (-g|--global) use the global binarizer" << endl
<< " (-v|--verbose) chattier results printing" << endl
<< " --more display more information about the barcode" << endl
<< " --test-mode compare IMAGEs against text files" << endl
<< " --try-harder spend more time to try to find a barcode" << endl
<< " --search-multi search for more than one bar code" << endl
<< endl
<< "Example usage:" << endl
<< " zxing --test-mode *.jpg" << endl
<< endl;
return 1;
}
int total = 0;
int gonly = 0;
int honly = 0;
int both = 0;
int neither = 0;
for (int i = 1; i < argc; i++) {
string filename = argv[i];
if (filename.compare("--verbose") == 0 ||
filename.compare("-v") == 0) {
verbose = true;
continue;
}
if (filename.compare("--hybrid") == 0 ||
filename.compare("-h") == 0) {
use_hybrid = true;
continue;
}
if (filename.compare("--global") == 0 ||
filename.compare("-g") == 0) {
use_global = true;
continue;
}
if (filename.compare("--more") == 0) {
more = true;
continue;
}
if (filename.compare("--test-mode") == 0) {
test_mode = true;
continue;
}
if (filename.compare("--try-harder") == 0) {
try_harder = true;
continue;
}
if (filename.compare("--search-multi") == 0){
search_multi = true;
continue;
}
if (filename.length() > 3 &&
(filename.substr(filename.length() - 3, 3).compare("txt") == 0 ||
filename.substr(filename.length() - 3, 3).compare("bin") == 0)) {
continue;
}
if (!use_global && !use_hybrid) {
use_global = use_hybrid = true;
}
if (test_mode) {
cerr << "Testing: " << filename << endl;
}
Ref<LuminanceSource> source;
try {
source = ImageReaderSource::create(filename);
} catch (const zxing::IllegalArgumentException &e) {
cerr << e.what() << " (ignoring)" << endl;
continue;
}
string expected = read_expected(filename);
int gresult = 1;
int hresult = 1;
if (use_hybrid) {
hresult = read_image(source, true, expected);
}
if (use_global && (verbose || hresult != 0)) {
gresult = read_image(source, false, expected);
if (!verbose && gresult != 0) {
cout << "decoding failed" << endl;
}
}
gresult = gresult == 0;
hresult = hresult == 0;
gonly += gresult && !hresult;
honly += hresult && !gresult;
both += gresult && hresult;
neither += !gresult && !hresult;
total = total + 1;
}
if (test_mode) {
cout << endl
<< "Summary:" << endl
<< " " << total << " images tested total," << endl
<< " " << (honly + both) << " passed hybrid, " << (gonly + both)
<< " passed global, " << both << " pass both, " << endl
<< " " << honly << " passed only hybrid, " << gonly
<< " passed only global, " << neither << " pass neither." << endl;
}
return 0;
}