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// Copyright 2016 PDFium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
// TODO(tsepez) this requires a lot more testing.
#include <stdint.h>
#include "core/fxcodec/jbig2/JBig2_Image.h"
#include "testing/gtest/include/gtest/gtest.h"
namespace {
const int32_t kWidthPixels = 80;
const int32_t kWidthBytes = 10;
const int32_t kStrideBytes = kWidthBytes + 1; // For testing stride != width.
const int32_t kHeightLines = 20;
const int32_t kLargerHeightLines = 100;
const int32_t kTooLargeHeightLines = 40000000;
} // namespace
TEST(fxcodec, JBig2ImageCreate) {
CJBig2_Image img(kWidthPixels, kHeightLines);
img.SetPixel(0, 0, true);
img.SetPixel(kWidthPixels - 1, kHeightLines - 1, false);
EXPECT_EQ(kWidthPixels, img.width());
EXPECT_EQ(kHeightLines, img.height());
EXPECT_TRUE(img.GetPixel(0, 0));
EXPECT_FALSE(img.GetPixel(kWidthPixels - 1, kHeightLines - 1));
}
TEST(fxcodec, JBig2ImageCreateTooBig) {
CJBig2_Image img(kWidthPixels, kTooLargeHeightLines);
EXPECT_EQ(0, img.width());
EXPECT_EQ(0, img.height());
EXPECT_EQ(nullptr, img.data());
}
TEST(fxcodec, JBig2ImageCreateExternal) {
uint8_t buf[kHeightLines * kStrideBytes];
CJBig2_Image img(kWidthPixels, kHeightLines, kStrideBytes, buf);
img.SetPixel(0, 0, true);
img.SetPixel(kWidthPixels - 1, kHeightLines - 1, false);
EXPECT_EQ(kWidthPixels, img.width());
EXPECT_EQ(kHeightLines, img.height());
EXPECT_TRUE(img.GetPixel(0, 0));
EXPECT_FALSE(img.GetPixel(kWidthPixels - 1, kHeightLines - 1));
}
TEST(fxcodec, JBig2ImageCreateExternalTooBig) {
uint8_t buf[kHeightLines * kStrideBytes];
CJBig2_Image img(kWidthPixels, kTooLargeHeightLines, kStrideBytes, buf);
EXPECT_EQ(0, img.width());
EXPECT_EQ(0, img.height());
EXPECT_EQ(nullptr, img.data());
}
TEST(fxcodec, JBig2ImageExpand) {
CJBig2_Image img(kWidthPixels, kHeightLines);
img.SetPixel(0, 0, true);
img.SetPixel(kWidthPixels - 1, kHeightLines - 1, false);
img.Expand(kLargerHeightLines, true);
EXPECT_EQ(kWidthPixels, img.width());
EXPECT_EQ(kLargerHeightLines, img.height());
EXPECT_TRUE(img.GetPixel(0, 0));
EXPECT_FALSE(img.GetPixel(kWidthPixels - 1, kHeightLines - 1));
EXPECT_TRUE(img.GetPixel(kWidthPixels - 1, kLargerHeightLines - 1));
}
TEST(fxcodec, JBig2ImageExpandTooBig) {
CJBig2_Image img(kWidthPixels, kHeightLines);
img.SetPixel(0, 0, true);
img.SetPixel(kWidthPixels - 1, kHeightLines - 1, false);
img.Expand(kTooLargeHeightLines, true);
EXPECT_EQ(kWidthPixels, img.width());
EXPECT_EQ(kHeightLines, img.height());
EXPECT_TRUE(img.GetPixel(0, 0));
EXPECT_FALSE(img.GetPixel(kWidthPixels - 1, kHeightLines - 1));
}
TEST(fxcodec, JBig2ImageExpandExternal) {
uint8_t buf[kHeightLines * kStrideBytes];
CJBig2_Image img(kWidthPixels, kHeightLines, kStrideBytes, buf);
img.SetPixel(0, 0, true);
img.SetPixel(kWidthPixels - 1, kHeightLines - 1, false);
img.Expand(kLargerHeightLines, true);
EXPECT_EQ(kWidthPixels, img.width());
EXPECT_EQ(kLargerHeightLines, img.height());
EXPECT_TRUE(img.GetPixel(0, 0));
EXPECT_FALSE(img.GetPixel(kWidthPixels - 1, kHeightLines - 1));
EXPECT_TRUE(img.GetPixel(kWidthPixels - 1, kLargerHeightLines - 1));
}
TEST(fxcodec, JBig2ImageExpandExternalTooBig) {
uint8_t buf[kHeightLines * kStrideBytes];
CJBig2_Image img(kWidthPixels, kHeightLines, kStrideBytes, buf);
img.SetPixel(0, 0, true);
img.SetPixel(kWidthPixels - 1, kHeightLines - 1, false);
img.Expand(kTooLargeHeightLines, true);
EXPECT_EQ(kWidthPixels, img.width());
EXPECT_EQ(kHeightLines, img.height());
EXPECT_TRUE(img.GetPixel(0, 0));
EXPECT_FALSE(img.GetPixel(kWidthPixels - 1, kHeightLines - 1));
}
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