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// Copyright 2015 The Chromium 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 "third_party/blink/renderer/platform/image-decoders/bmp/bmp_image_decoder.h"
#include <memory>
#include "testing/gtest/include/gtest/gtest.h"
#include "third_party/blink/renderer/platform/image-decoders/image_decoder_test_helpers.h"
#include "third_party/blink/renderer/platform/shared_buffer.h"
namespace blink {
namespace {
std::unique_ptr<ImageDecoder> CreateBMPDecoder() {
return std::make_unique<BMPImageDecoder>(
ImageDecoder::kAlphaNotPremultiplied, ColorBehavior::TransformToSRGB(),
ImageDecoder::kNoDecodedImageByteLimit);
}
} // anonymous namespace
TEST(BMPImageDecoderTest, isSizeAvailable) {
static constexpr char kBmpFile[] = "/images/resources/lenna.bmp"; // 256x256
scoped_refptr<SharedBuffer> data = ReadFile(kBmpFile);
ASSERT_TRUE(data.get());
std::unique_ptr<ImageDecoder> decoder = CreateBMPDecoder();
decoder->SetData(data.get(), true);
EXPECT_TRUE(decoder->IsSizeAvailable());
EXPECT_EQ(256, decoder->Size().Width());
EXPECT_EQ(256, decoder->Size().Height());
}
TEST(BMPImageDecoderTest, parseAndDecode) {
static constexpr char kBmpFile[] = "/images/resources/lenna.bmp"; // 256x256
scoped_refptr<SharedBuffer> data = ReadFile(kBmpFile);
ASSERT_TRUE(data.get());
std::unique_ptr<ImageDecoder> decoder = CreateBMPDecoder();
decoder->SetData(data.get(), true);
ImageFrame* frame = decoder->DecodeFrameBufferAtIndex(0);
ASSERT_TRUE(frame);
EXPECT_EQ(ImageFrame::kFrameComplete, frame->GetStatus());
EXPECT_EQ(256, frame->Bitmap().width());
EXPECT_EQ(256, frame->Bitmap().height());
EXPECT_FALSE(decoder->Failed());
}
// Test if a BMP decoder returns a proper error while decoding an empty image.
TEST(BMPImageDecoderTest, emptyImage) {
static constexpr char kBmpFile[] = "/images/resources/0x0.bmp"; // 0x0
scoped_refptr<SharedBuffer> data = ReadFile(kBmpFile);
ASSERT_TRUE(data.get());
std::unique_ptr<ImageDecoder> decoder = CreateBMPDecoder();
decoder->SetData(data.get(), true);
ImageFrame* frame = decoder->DecodeFrameBufferAtIndex(0);
ASSERT_TRUE(frame);
EXPECT_EQ(ImageFrame::kFrameEmpty, frame->GetStatus());
EXPECT_TRUE(decoder->Failed());
}
TEST(BMPImageDecoderTest, int32MinHeight) {
static constexpr char kBmpFile[] =
"/images/resources/1xint32_min.bmp"; // 0xINT32_MIN
scoped_refptr<SharedBuffer> data = ReadFile(kBmpFile);
std::unique_ptr<ImageDecoder> decoder = CreateBMPDecoder();
// Test when not all data is received.
decoder->SetData(data.get(), false);
EXPECT_FALSE(decoder->IsSizeAvailable());
EXPECT_TRUE(decoder->Failed());
}
// This test verifies that calling SharedBuffer::MergeSegmentsIntoBuffer() does
// not break BMP decoding at a critical point: in between a call to decode the
// size (when BMPImageDecoder stops while it may still have input data to
// read) and a call to do a full decode.
TEST(BMPImageDecoderTest, mergeBuffer) {
static constexpr char kBmpFile[] = "/images/resources/lenna.bmp";
TestMergeBuffer(&CreateBMPDecoder, kBmpFile);
}
// Verify that decoding this image does not crash.
TEST(BMPImageDecoderTest, crbug752898) {
static constexpr char kBmpFile[] = "/images/resources/crbug752898.bmp";
scoped_refptr<SharedBuffer> data = ReadFile(kBmpFile);
ASSERT_TRUE(data.get());
std::unique_ptr<ImageDecoder> decoder = CreateBMPDecoder();
decoder->SetData(data.get(), true);
decoder->DecodeFrameBufferAtIndex(0);
}
} // namespace blink
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