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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.
#include <cstdint>
#include <vector>
#include "lib/jpegli/decode.h"
#include "lib/jpegli/libjpeg_test_util.h"
#include "lib/jpegli/test_utils.h"
#include "lib/jpegli/testing.h"
namespace jpegli {
namespace {
void ReadOutputImage(j_decompress_ptr cinfo, TestImage* output) {
jpegli_read_header(cinfo, /*require_image=*/TRUE);
jpegli_start_decompress(cinfo);
output->ysize = cinfo->output_height;
output->xsize = cinfo->output_width;
output->components = cinfo->num_components;
output->AllocatePixels();
size_t stride = cinfo->output_width * cinfo->num_components;
while (cinfo->output_scanline < cinfo->output_height) {
JSAMPROW scanline = &output->pixels[cinfo->output_scanline * stride];
jpegli_read_scanlines(cinfo, &scanline, 1);
}
jpegli_finish_decompress(cinfo);
}
struct TestConfig {
std::string fn;
std::string fn_desc;
DecompressParams dparams;
};
class SourceManagerTestParam : public ::testing::TestWithParam<TestConfig> {};
namespace {
FILE* MemOpen(const std::vector<uint8_t>& data) {
FILE* src = tmpfile();
if (!src) return nullptr;
fwrite(data.data(), 1, data.size(), src);
fseek(src, 0, SEEK_SET);
return src;
}
} // namespace
TEST_P(SourceManagerTestParam, TestStdioSourceManager) {
TestConfig config = GetParam();
std::vector<uint8_t> compressed = ReadTestData(config.fn);
if (config.dparams.size_factor < 1.0) {
compressed.resize(compressed.size() * config.dparams.size_factor);
}
FILE* src = MemOpen(compressed);
ASSERT_TRUE(src);
TestImage output0;
jpeg_decompress_struct cinfo;
const auto try_catch_block = [&]() -> bool {
ERROR_HANDLER_SETUP(jpegli);
jpegli_create_decompress(&cinfo);
jpegli_stdio_src(&cinfo, src);
ReadOutputImage(&cinfo, &output0);
return true;
};
bool ok = try_catch_block();
fclose(src);
ASSERT_TRUE(ok);
jpegli_destroy_decompress(&cinfo);
TestImage output1;
DecodeWithLibjpeg(CompressParams(), DecompressParams(), compressed, &output1);
VerifyOutputImage(output1, output0, 1.0f);
}
TEST_P(SourceManagerTestParam, TestMemSourceManager) {
TestConfig config = GetParam();
std::vector<uint8_t> compressed = ReadTestData(config.fn);
if (config.dparams.size_factor < 1.0f) {
compressed.resize(compressed.size() * config.dparams.size_factor);
}
TestImage output0;
jpeg_decompress_struct cinfo;
const auto try_catch_block = [&]() -> bool {
ERROR_HANDLER_SETUP(jpegli);
jpegli_create_decompress(&cinfo);
jpegli_mem_src(&cinfo, compressed.data(), compressed.size());
ReadOutputImage(&cinfo, &output0);
return true;
};
ASSERT_TRUE(try_catch_block());
jpegli_destroy_decompress(&cinfo);
TestImage output1;
DecodeWithLibjpeg(CompressParams(), DecompressParams(), compressed, &output1);
VerifyOutputImage(output1, output0, 1.0f);
}
std::vector<TestConfig> GenerateTests() {
std::vector<TestConfig> all_tests;
{
std::vector<std::pair<std::string, std::string>> testfiles({
{"jxl/flower/flower.png.im_q85_444.jpg", "Q85YUV444"},
{"jxl/flower/flower.png.im_q85_420.jpg", "Q85YUV420"},
{"jxl/flower/flower.png.im_q85_420_R13B.jpg", "Q85YUV420R13B"},
});
for (const auto& it : testfiles) {
for (float size_factor : {0.1f, 0.33f, 0.5f, 0.75f}) {
TestConfig config;
config.fn = it.first;
config.fn_desc = it.second;
config.dparams.size_factor = size_factor;
all_tests.push_back(config);
}
}
return all_tests;
}
}
std::ostream& operator<<(std::ostream& os, const TestConfig& c) {
os << c.fn_desc;
if (c.dparams.size_factor < 1.0f) {
os << "Partial" << static_cast<int>(c.dparams.size_factor * 100) << "p";
}
return os;
}
std::string TestDescription(
const testing::TestParamInfo<SourceManagerTestParam::ParamType>& info) {
std::stringstream name;
name << info.param;
return name.str();
}
JPEGLI_INSTANTIATE_TEST_SUITE_P(SourceManagerTest, SourceManagerTestParam,
testing::ValuesIn(GenerateTests()),
TestDescription);
} // namespace
} // namespace jpegli
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