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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 "lib/jxl/enc_external_image.h"
#include <array>
#include <new>
#include "lib/jxl/base/compiler_specific.h"
#include "lib/jxl/base/data_parallel.h"
#include "lib/jxl/color_encoding_internal.h"
#include "lib/jxl/image_ops.h"
#include "lib/jxl/image_test_utils.h"
#include "lib/jxl/testing.h"
namespace jxl {
namespace {
#if !defined(JXL_CRASH_ON_ERROR)
TEST(ExternalImageTest, InvalidSize) {
ImageMetadata im;
im.SetAlphaBits(8);
ImageBundle ib(&im);
JxlPixelFormat format = {4, JXL_TYPE_UINT16, JXL_BIG_ENDIAN, 0};
const uint8_t buf[10 * 100 * 8] = {};
EXPECT_FALSE(ConvertFromExternal(
Span<const uint8_t>(buf, 10), /*xsize=*/10, /*ysize=*/100,
/*c_current=*/ColorEncoding::SRGB(),
/*bits_per_sample=*/16, format, nullptr, &ib));
EXPECT_FALSE(ConvertFromExternal(
Span<const uint8_t>(buf, sizeof(buf) - 1), /*xsize=*/10, /*ysize=*/100,
/*c_current=*/ColorEncoding::SRGB(),
/*bits_per_sample=*/16, format, nullptr, &ib));
EXPECT_TRUE(
ConvertFromExternal(Span<const uint8_t>(buf, sizeof(buf)), /*xsize=*/10,
/*ysize=*/100, /*c_current=*/ColorEncoding::SRGB(),
/*bits_per_sample=*/16, format, nullptr, &ib));
}
#endif
TEST(ExternalImageTest, AlphaMissing) {
ImageMetadata im;
im.SetAlphaBits(0); // No alpha
ImageBundle ib(&im);
const size_t xsize = 10;
const size_t ysize = 20;
const uint8_t buf[xsize * ysize * 4] = {};
JxlPixelFormat format = {4, JXL_TYPE_UINT8, JXL_BIG_ENDIAN, 0};
// has_alpha is true but the ImageBundle has no alpha. Alpha channel should
// be ignored.
EXPECT_TRUE(ConvertFromExternal(Span<const uint8_t>(buf, sizeof(buf)), xsize,
ysize,
/*c_current=*/ColorEncoding::SRGB(),
/*bits_per_sample=*/8, format, nullptr, &ib));
EXPECT_FALSE(ib.HasAlpha());
}
TEST(ExternalImageTest, AlphaPremultiplied) {
ImageMetadata im;
im.SetAlphaBits(8, true);
ImageBundle ib(&im);
const size_t xsize = 10;
const size_t ysize = 20;
const size_t size = xsize * ysize * 8;
const uint8_t buf[size] = {};
JxlPixelFormat format = {4, JXL_TYPE_UINT16, JXL_BIG_ENDIAN, 0};
EXPECT_TRUE(BufferToImageBundle(format, xsize, ysize, buf, size, nullptr,
ColorEncoding::SRGB(), &ib));
}
} // namespace
} // namespace jxl
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