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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/image_ops.h"
#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
#include <utility>
#include "lib/jxl/base/printf_macros.h"
#include "lib/jxl/image.h"
#include "lib/jxl/image_test_utils.h"
#include "lib/jxl/testing.h"
namespace jxl {
namespace {
template <typename T>
void TestPacked(const size_t xsize, const size_t ysize) {
Plane<T> image1(xsize, ysize);
RandomFillImage(&image1);
const std::vector<T>& packed = PackedFromImage(image1);
const Plane<T>& image2 = ImageFromPacked(packed, xsize, ysize);
JXL_EXPECT_OK(SamePixels(image1, image2, _));
}
TEST(ImageTest, TestPacked) {
TestPacked<uint8_t>(1, 1);
TestPacked<uint8_t>(7, 1);
TestPacked<uint8_t>(1, 7);
TestPacked<int16_t>(1, 1);
TestPacked<int16_t>(7, 1);
TestPacked<int16_t>(1, 7);
TestPacked<uint16_t>(1, 1);
TestPacked<uint16_t>(7, 1);
TestPacked<uint16_t>(1, 7);
TestPacked<float>(1, 1);
TestPacked<float>(7, 1);
TestPacked<float>(1, 7);
}
// Ensure entire payload is readable/writable for various size/offset combos.
TEST(ImageTest, TestAllocator) {
Rng rng(0);
const size_t k32 = 32;
const size_t kAlign = CacheAligned::kAlignment;
for (size_t size : {k32 * 1, k32 * 2, k32 * 3, k32 * 4, k32 * 5,
CacheAligned::kAlias, 2 * CacheAligned::kAlias + 4}) {
for (size_t offset = 0; offset <= CacheAligned::kAlias; offset += kAlign) {
uint8_t* bytes =
static_cast<uint8_t*>(CacheAligned::Allocate(size, offset));
JXL_CHECK(reinterpret_cast<uintptr_t>(bytes) % kAlign == 0);
// Ensure we can write/read the last byte. Use RNG to fool the compiler
// into thinking the write is necessary.
memset(bytes, 0, size);
bytes[size - 1] = 1; // greatest element
uint32_t pos = rng.UniformU(0, size - 1); // random but != greatest
JXL_CHECK(bytes[pos] < bytes[size - 1]);
CacheAligned::Free(bytes);
}
}
}
template <typename T>
void TestFillImpl(Image3<T>* img, const char* layout) {
FillImage(T(1), img);
for (size_t y = 0; y < img->ysize(); ++y) {
for (size_t c = 0; c < 3; ++c) {
T* JXL_RESTRICT row = img->PlaneRow(c, y);
for (size_t x = 0; x < img->xsize(); ++x) {
if (row[x] != T(1)) {
printf("Not 1 at c=%" PRIuS " %" PRIuS ", %" PRIuS " (%" PRIuS
" x %" PRIuS ") (%s)\n",
c, x, y, img->xsize(), img->ysize(), layout);
abort();
}
row[x] = T(2);
}
}
}
// Same for ZeroFillImage and swapped c/y loop ordering.
ZeroFillImage(img);
for (size_t c = 0; c < 3; ++c) {
for (size_t y = 0; y < img->ysize(); ++y) {
T* JXL_RESTRICT row = img->PlaneRow(c, y);
for (size_t x = 0; x < img->xsize(); ++x) {
if (row[x] != T(0)) {
printf("Not 0 at c=%" PRIuS " %" PRIuS ", %" PRIuS " (%" PRIuS
" x %" PRIuS ") (%s)\n",
c, x, y, img->xsize(), img->ysize(), layout);
abort();
}
row[x] = T(3);
}
}
}
}
template <typename T>
void TestFillT() {
for (uint32_t xsize : {0, 1, 15, 16, 31, 32}) {
for (uint32_t ysize : {0, 1, 15, 16, 31, 32}) {
Image3<T> image(xsize, ysize);
TestFillImpl(&image, "size ctor");
Image3<T> planar(Plane<T>(xsize, ysize), Plane<T>(xsize, ysize),
Plane<T>(xsize, ysize));
TestFillImpl(&planar, "planar");
}
}
}
// Ensure y/c/x and c/y/x loops visit pixels no more than once.
TEST(ImageTest, TestFill) {
TestFillT<uint8_t>();
TestFillT<int16_t>();
TestFillT<float>();
TestFillT<double>();
}
TEST(ImageTest, CopyImageToWithPaddingTest) {
Plane<uint32_t> src(100, 61);
for (size_t y = 0; y < src.ysize(); y++) {
for (size_t x = 0; x < src.xsize(); x++) {
src.Row(y)[x] = x * 1000 + y;
}
}
Rect src_rect(10, 20, 30, 40);
EXPECT_TRUE(src_rect.IsInside(src));
Plane<uint32_t> dst(60, 50);
FillImage(0u, &dst);
Rect dst_rect(20, 5, 30, 40);
EXPECT_TRUE(dst_rect.IsInside(dst));
CopyImageToWithPadding(src_rect, src, /*padding=*/2, dst_rect, &dst);
// ysize is + 3 instead of + 4 because we are at the y image boundary on the
// source image.
Rect padded_dst_rect(20 - 2, 5 - 2, 30 + 4, 40 + 3);
for (size_t y = 0; y < dst.ysize(); y++) {
for (size_t x = 0; x < dst.xsize(); x++) {
if (Rect(x, y, 1, 1).IsInside(padded_dst_rect)) {
EXPECT_EQ((x - dst_rect.x0() + src_rect.x0()) * 1000 +
(y - dst_rect.y0() + src_rect.y0()),
dst.Row(y)[x]);
} else {
EXPECT_EQ(0u, dst.Row(y)[x]);
}
}
}
}
} // namespace
} // namespace jxl
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