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// Copyright 2019 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "chrome/browser/notifications/scheduler/internal/png_icon_converter_impl.h"
#include <memory>
#include <utility>
#include "base/base64.h"
#include "base/containers/span.h"
#include "base/task/thread_pool.h"
#include "base/threading/thread_restrictions.h"
#include "chrome/browser/notifications/scheduler/internal/icon_entry.h"
#include "ui/gfx/codec/png_codec.h"
namespace notifications {
namespace {
std::unique_ptr<EncodeResult> ConvertIconToStringInternal(
const std::vector<SkBitmap>& images) {
base::AssertLongCPUWorkAllowed();
std::vector<std::string> encoded_data;
for (const auto& image : images) {
std::optional<std::vector<uint8_t>> image_data =
gfx::PNGCodec::EncodeBGRASkBitmap(image,
/*discard_transparency=*/false);
if (!image_data) {
return std::make_unique<EncodeResult>(false, std::vector<std::string>());
}
encoded_data.emplace_back(base::as_string_view(image_data.value()));
}
return std::make_unique<EncodeResult>(
true, std::vector<std::string>(std::move(encoded_data)));
}
std::unique_ptr<DecodeResult> ConvertStringToIconInternal(
const std::vector<std::string>& encoded_data) {
base::AssertLongCPUWorkAllowed();
std::vector<SkBitmap> icons;
for (const auto& data : encoded_data) {
SkBitmap image = gfx::PNGCodec::Decode(base::as_byte_span(data));
if (image.isNull()) {
return std::make_unique<DecodeResult>(false, std::vector<SkBitmap>());
}
icons.emplace_back(std::move(image));
}
return std::make_unique<DecodeResult>(
true, std::vector<SkBitmap>(std::move(icons)));
}
} // namespace
PngIconConverterImpl::PngIconConverterImpl() = default;
PngIconConverterImpl::~PngIconConverterImpl() = default;
void PngIconConverterImpl::ConvertIconToString(std::vector<SkBitmap> images,
EncodeCallback callback) {
DCHECK(callback);
base::ThreadPool::PostTaskAndReplyWithResult(
FROM_HERE, {base::MayBlock(), base::TaskPriority::BEST_EFFORT},
base::BindOnce(&ConvertIconToStringInternal, std::move(images)),
std::move(callback));
}
void PngIconConverterImpl::ConvertStringToIcon(
std::vector<std::string> encoded_data,
DecodeCallback callback) {
DCHECK(callback);
base::ThreadPool::PostTaskAndReplyWithResult(
FROM_HERE, {base::MayBlock(), base::TaskPriority::BEST_EFFORT},
base::BindOnce(&ConvertStringToIconInternal, std::move(encoded_data)),
std::move(callback));
}
} // namespace notifications
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