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// Copyright 2016 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/image_fetcher/ios/ios_image_decoder_impl.h"
#import <UIKit/UIKit.h>
#include <memory>
#include "base/functional/bind.h"
#include "base/functional/callback.h"
#import "base/ios/ios_util.h"
#include "base/task/thread_pool.h"
#include "ios/web/public/thread/web_thread.h"
#include "ui/gfx/geometry/size.h"
#include "ui/gfx/image/image.h"
namespace image_fetcher {
class IOSImageDecoderImpl : public ImageDecoder {
public:
explicit IOSImageDecoderImpl();
IOSImageDecoderImpl(const IOSImageDecoderImpl&) = delete;
IOSImageDecoderImpl& operator=(const IOSImageDecoderImpl&) = delete;
~IOSImageDecoderImpl() override;
// Note, that |desired_image_frame_size| is not supported
// (http://crbug/697596).
void DecodeImage(const std::string& image_data,
const gfx::Size& desired_image_frame_size,
data_decoder::DataDecoder* data_decoder,
ImageDecodedCallback callback) override;
};
IOSImageDecoderImpl::IOSImageDecoderImpl() = default;
IOSImageDecoderImpl::~IOSImageDecoderImpl() = default;
void IOSImageDecoderImpl::DecodeImage(const std::string& image_data,
const gfx::Size& desired_image_frame_size,
data_decoder::DataDecoder* data_decoder,
ImageDecodedCallback callback) {
// Convert the |image_data| std::string to an NSData buffer.
NSData* data =
[NSData dataWithBytes:image_data.data() length:image_data.size()];
// Decode the image data using UIImage.
// "Most likely" always returns 1x images.
UIImage* ui_image = [UIImage imageWithData:data scale:1];
gfx::Image gfx_image;
if (ui_image) {
gfx_image = gfx::Image(ui_image);
}
std::move(callback).Run(gfx_image);
}
std::unique_ptr<ImageDecoder> CreateIOSImageDecoder() {
return std::make_unique<IOSImageDecoderImpl>();
}
} // namespace image_fetcher
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