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// Copyright 2025 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "components/omnibox/composebox/composebox_image_helper.h"
#include <array>
#include "base/strings/string_view_util.h"
#include "base/strings/stringprintf.h"
#include "components/lens/ref_counted_lens_overlay_client_logs.h"
#include "components/omnibox/composebox/composebox_query_controller.h"
#include "testing/gtest/include/gtest/gtest.h"
#include "third_party/lens_server_proto/lens_overlay_image_data.pb.h"
#include "third_party/skia/include/core/SkBitmap.h"
#include "ui/gfx/codec/jpeg_codec.h"
#include "ui/gfx/codec/webp_codec.h"
#include "ui/gfx/geometry/rect.h"
namespace composebox {
constexpr int kImageCompressionQuality = 30;
constexpr int kImageMaxArea = 1000000;
constexpr int kImageMaxHeight = 1000;
constexpr int kImageMaxWidth = 1000;
class ComposeboxImageHelperTest : public testing::Test {
protected:
const SkBitmap CreateOpaqueBitmap(int width, int height) {
SkBitmap bitmap;
bitmap.allocN32Pixels(width, height);
bitmap.eraseColor(SK_ColorGREEN);
bitmap.setAlphaType(kOpaque_SkAlphaType);
return bitmap;
}
lens::ImageData DownscaleAndEncodeBitmap(
SkBitmap bitmap,
scoped_refptr<lens::RefCountedLensOverlayClientLogs> ref_counted_logs,
bool enable_webp_encoding = true) {
ImageEncodingOptions image_options{
.enable_webp_encoding = enable_webp_encoding,
.max_size = kImageMaxArea,
.max_height = kImageMaxHeight,
.max_width = kImageMaxWidth,
.compression_quality = kImageCompressionQuality,
};
return composebox::DownscaleAndEncodeBitmap(bitmap, ref_counted_logs,
image_options);
}
std::string GetJpegBytesForBitmap(const SkBitmap& bitmap) {
std::optional<std::vector<uint8_t>> data =
gfx::JPEGCodec::Encode(bitmap, kImageCompressionQuality);
return std::string(base::as_string_view(data.value()));
}
std::string GetWebpBytesForBitmap(const SkBitmap& bitmap) {
std::optional<std::vector<uint8_t>> data =
gfx::WebpCodec::Encode(bitmap, kImageCompressionQuality);
return std::string(base::as_string_view(data.value()));
}
};
TEST_F(ComposeboxImageHelperTest, DownscaleAndEncodeBitmapMaxSize) {
const SkBitmap bitmap = CreateOpaqueBitmap(kImageMaxWidth, kImageMaxHeight);
scoped_refptr<lens::RefCountedLensOverlayClientLogs> ref_counted_logs =
base::MakeRefCounted<lens::RefCountedLensOverlayClientLogs>();
lens::ImageData image_data =
DownscaleAndEncodeBitmap(bitmap, ref_counted_logs);
std::string expected_output = GetJpegBytesForBitmap(bitmap);
EXPECT_EQ(kImageMaxWidth, image_data.image_metadata().width());
EXPECT_EQ(kImageMaxHeight, image_data.image_metadata().height());
EXPECT_EQ(expected_output, image_data.payload().image_bytes());
}
TEST_F(ComposeboxImageHelperTest, DownscaleAndEncodeBitmapSmallSize) {
const SkBitmap bitmap = CreateOpaqueBitmap(/*width=*/100, /*height=*/100);
scoped_refptr<lens::RefCountedLensOverlayClientLogs> ref_counted_logs =
base::MakeRefCounted<lens::RefCountedLensOverlayClientLogs>();
lens::ImageData image_data =
DownscaleAndEncodeBitmap(bitmap, ref_counted_logs);
std::string expected_output = GetJpegBytesForBitmap(bitmap);
EXPECT_EQ(bitmap.width(), image_data.image_metadata().width());
EXPECT_EQ(bitmap.height(), image_data.image_metadata().height());
EXPECT_EQ(expected_output, image_data.payload().image_bytes());
}
TEST_F(ComposeboxImageHelperTest, DownscaleAndEncodeBitmapLargeSize) {
const int scale = 2;
const SkBitmap bitmap =
CreateOpaqueBitmap(kImageMaxWidth * scale, kImageMaxHeight * scale);
scoped_refptr<lens::RefCountedLensOverlayClientLogs> ref_counted_logs =
base::MakeRefCounted<lens::RefCountedLensOverlayClientLogs>();
lens::ImageData image_data =
DownscaleAndEncodeBitmap(bitmap, ref_counted_logs);
const SkBitmap expected_bitmap =
CreateOpaqueBitmap(kImageMaxWidth, kImageMaxHeight);
std::string expected_output = GetJpegBytesForBitmap(expected_bitmap);
// The image should have been resized and scaled down.
EXPECT_EQ(kImageMaxWidth, image_data.image_metadata().width());
EXPECT_EQ(kImageMaxHeight, image_data.image_metadata().height());
EXPECT_EQ(expected_output, image_data.payload().image_bytes());
}
TEST_F(ComposeboxImageHelperTest, DownscaleAndEncodeBitmapHeightTooLarge) {
const int scale = 2;
const SkBitmap bitmap =
CreateOpaqueBitmap(kImageMaxWidth, kImageMaxHeight * scale);
scoped_refptr<lens::RefCountedLensOverlayClientLogs> ref_counted_logs =
base::MakeRefCounted<lens::RefCountedLensOverlayClientLogs>();
lens::ImageData image_data =
DownscaleAndEncodeBitmap(bitmap, ref_counted_logs);
const SkBitmap expected_bitmap =
CreateOpaqueBitmap(kImageMaxWidth / scale, kImageMaxHeight);
std::string expected_output = GetJpegBytesForBitmap(expected_bitmap);
// The image should have been resized and scaled down.
EXPECT_EQ(kImageMaxWidth / scale, image_data.image_metadata().width());
EXPECT_EQ(kImageMaxHeight, image_data.image_metadata().height());
EXPECT_EQ(expected_output, image_data.payload().image_bytes());
}
TEST_F(ComposeboxImageHelperTest, DownscaleAndEncodeBitmapWidthTooLarge) {
const int scale = 2;
const SkBitmap bitmap =
CreateOpaqueBitmap(kImageMaxWidth * scale, kImageMaxHeight);
scoped_refptr<lens::RefCountedLensOverlayClientLogs> ref_counted_logs =
base::MakeRefCounted<lens::RefCountedLensOverlayClientLogs>();
lens::ImageData image_data =
DownscaleAndEncodeBitmap(bitmap, ref_counted_logs);
const SkBitmap expected_bitmap =
CreateOpaqueBitmap(kImageMaxWidth, kImageMaxHeight / scale);
std::string expected_output = GetJpegBytesForBitmap(expected_bitmap);
// The image should have been resized and scaled down.
EXPECT_EQ(kImageMaxWidth, image_data.image_metadata().width());
EXPECT_EQ(kImageMaxHeight / scale, image_data.image_metadata().height());
EXPECT_EQ(expected_output, image_data.payload().image_bytes());
}
TEST_F(ComposeboxImageHelperTest, DownscaleAndEncodeBitmapTransparent) {
// Create a bitmap. Since it isn't marked with kOpaque_SkAlphaType the
// output should be WebP instead of JPEG.
SkBitmap bitmap;
bitmap.allocN32Pixels(/*width=*/100, /*height=*/100);
bitmap.eraseColor(SK_ColorGREEN);
scoped_refptr<lens::RefCountedLensOverlayClientLogs> ref_counted_logs =
base::MakeRefCounted<lens::RefCountedLensOverlayClientLogs>();
lens::ImageData image_data =
DownscaleAndEncodeBitmap(bitmap, ref_counted_logs);
std::string expected_output = GetWebpBytesForBitmap(bitmap);
EXPECT_EQ(bitmap.width(), image_data.image_metadata().width());
EXPECT_EQ(bitmap.height(), image_data.image_metadata().height());
EXPECT_EQ(expected_output, image_data.payload().image_bytes());
}
TEST_F(ComposeboxImageHelperTest,
DownscaleAndEncodeBitmapTransparentWebpDisabled) {
// Create a bitmap. Since it isn't marked with kOpaque_SkAlphaType the
// output should be WebP instead of JPEG.
SkBitmap bitmap;
bitmap.allocN32Pixels(/*width=*/100, /*height=*/100);
bitmap.eraseColor(SK_ColorGREEN);
scoped_refptr<lens::RefCountedLensOverlayClientLogs> ref_counted_logs =
base::MakeRefCounted<lens::RefCountedLensOverlayClientLogs>();
lens::ImageData image_data = DownscaleAndEncodeBitmap(
bitmap, ref_counted_logs, /*enable_webp_encoding=*/false);
std::string expected_output = GetJpegBytesForBitmap(bitmap);
EXPECT_EQ(bitmap.width(), image_data.image_metadata().width());
EXPECT_EQ(bitmap.height(), image_data.image_metadata().height());
EXPECT_EQ(expected_output, image_data.payload().image_bytes());
}
} // namespace composebox
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