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// Copyright (c) the JPEG XL Project Authors. All rights reserved.
//
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
#ifndef LIB_JPEGLI_TEST_UTILS_H_
#define LIB_JPEGLI_TEST_UTILS_H_
#include <stddef.h>
#include <stdint.h>
#include <algorithm>
#include <string>
#include <vector>
/* clang-format off */
#include <stdio.h>
#include <jpeglib.h>
#include <setjmp.h>
/* clang-format on */
#include "lib/jpegli/common.h"
#include "lib/jpegli/libjpeg_test_util.h"
#include "lib/jpegli/test_params.h"
namespace jpegli {
#define ERROR_HANDLER_SETUP(flavor) \
jpeg_error_mgr jerr; \
jmp_buf env; \
cinfo.err = flavor##_std_error(&jerr); \
if (setjmp(env)) { \
return false; \
} \
cinfo.client_data = reinterpret_cast<void*>(&env); \
cinfo.err->error_exit = [](j_common_ptr cinfo) { \
(*cinfo->err->output_message)(cinfo); \
jmp_buf* env = reinterpret_cast<jmp_buf*>(cinfo->client_data); \
flavor##_destroy(cinfo); \
longjmp(*env, 1); \
};
std::string IOMethodName(JpegliDataType data_type, JpegliEndianness endianness);
std::string ColorSpaceName(J_COLOR_SPACE colorspace);
std::ostream& operator<<(std::ostream& os, const TestImage& input);
std::ostream& operator<<(std::ostream& os, const CompressParams& jparams);
int NumTestScanScripts();
void VerifyHeader(const CompressParams& jparams, j_decompress_ptr cinfo);
void VerifyScanHeader(const CompressParams& jparams, j_decompress_ptr cinfo);
void SetDecompressParams(const DecompressParams& dparams,
j_decompress_ptr cinfo);
void SetScanDecompressParams(const DecompressParams& dparams,
j_decompress_ptr cinfo, int scan_number);
void CopyCoefficients(j_decompress_ptr cinfo, jvirt_barray_ptr* coef_arrays,
TestImage* output);
void UnmapColors(uint8_t* row, size_t xsize, int components,
JSAMPARRAY colormap, size_t num_colors);
std::string GetTestDataPath(const std::string& filename);
std::vector<uint8_t> ReadTestData(const std::string& filename);
class PNMParser {
public:
explicit PNMParser(const uint8_t* data, const size_t len)
: pos_(data), end_(data + len) {}
// Sets "pos" to the first non-header byte/pixel on success.
bool ParseHeader(const uint8_t** pos, size_t* xsize, size_t* ysize,
size_t* num_channels, size_t* bitdepth);
private:
static bool IsLineBreak(const uint8_t c) { return c == '\r' || c == '\n'; }
static bool IsWhitespace(const uint8_t c) {
return IsLineBreak(c) || c == '\t' || c == ' ';
}
bool ParseUnsigned(size_t* number);
bool SkipWhitespace();
const uint8_t* pos_;
const uint8_t* const end_;
};
bool ReadPNM(const std::vector<uint8_t>& data, size_t* xsize, size_t* ysize,
size_t* num_channels, size_t* bitdepth,
std::vector<uint8_t>* pixels);
void SetNumChannels(J_COLOR_SPACE colorspace, size_t* channels);
void ConvertToGrayscale(TestImage* img);
void GeneratePixels(TestImage* img);
void GenerateRawData(const CompressParams& jparams, TestImage* img);
void GenerateCoeffs(const CompressParams& jparams, TestImage* img);
void EncodeWithJpegli(const TestImage& input, const CompressParams& jparams,
j_compress_ptr cinfo);
bool EncodeWithJpegli(const TestImage& input, const CompressParams& jparams,
std::vector<uint8_t>* compressed);
double DistanceRms(const TestImage& input, const TestImage& output,
size_t start_line, size_t num_lines,
double* max_diff = nullptr);
double DistanceRms(const TestImage& input, const TestImage& output,
double* max_diff = nullptr);
void VerifyOutputImage(const TestImage& input, const TestImage& output,
size_t start_line, size_t num_lines, double max_rms,
double max_diff = 255.0);
void VerifyOutputImage(const TestImage& input, const TestImage& output,
double max_rms, double max_diff = 255.0);
} // namespace jpegli
#endif // LIB_JPEGLI_TEST_UTILS_H_
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