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// Copyright 2023 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef CHROME_BROWSER_THUMBNAIL_CC_ETC1_THUMBNAIL_HELPER_H_
#define CHROME_BROWSER_THUMBNAIL_CC_ETC1_THUMBNAIL_HELPER_H_
#include "base/files/file_path.h"
#include "base/memory/weak_ptr.h"
#include "chrome/browser/thumbnail/cc/thumbnail.h"
namespace thumbnail {
class Etc1ThumbnailHelper {
public:
// Implementation of the ETC1 thumbnail helper class which takes a base
// file path on instantiation for future file path retrieval.
Etc1ThumbnailHelper(
const base::FilePath& base_path,
scoped_refptr<base::SequencedTaskRunner> file_task_runner);
~Etc1ThumbnailHelper();
Etc1ThumbnailHelper(const Etc1ThumbnailHelper&) = delete;
Etc1ThumbnailHelper& operator=(const Etc1ThumbnailHelper&) = delete;
// `post_compression_task` will run on the thread that created this
// Etc1ThumbnailHelper.
// `supports_etc_non_power_of_two` is true if the encoded bitmap bounds don't
// need to be a multiple of 2.
void Compress(SkBitmap raw_data,
bool supports_etc_non_power_of_two,
base::OnceCallback<void(sk_sp<SkPixelRef>, const gfx::Size&)>
post_compression_task);
// `post_write_task` will run on the thread that created this
// Etc1ThumbnailHelper.
void Write(thumbnail::TabId tab_id,
sk_sp<SkPixelRef> compressed_data,
float scale,
const gfx::Size& content_size,
base::OnceClosure post_write_task);
// Callers are expected to bind `post_read_task` to the correct thread.
void Read(thumbnail::TabId tab_id,
base::OnceCallback<void(sk_sp<SkPixelRef>, float, const gfx::Size&)>
post_read_task);
void Delete(thumbnail::TabId tab_id);
// `post_decompress_callback` will run on the thread that created this
// Etc1ThumbnailHelper.
void Decompress(
base::OnceCallback<void(bool, const SkBitmap&)> post_decompress_callback,
sk_sp<SkPixelRef> compressed_data,
float scale,
const gfx::Size& encoded_size);
base::WeakPtr<Etc1ThumbnailHelper> GetWeakPtr() {
return weak_ptr_factory_.GetWeakPtr();
}
private:
friend class Etc1ThumbnailHelperTest;
// Member function to retrieve the ETC1 file path using the stored base
// path, and is exposed primarily for unit testing purposes.
base::FilePath GetFilePath(thumbnail::TabId tab_id);
const base::FilePath base_path_;
scoped_refptr<base::SequencedTaskRunner> default_task_runner_;
scoped_refptr<base::SequencedTaskRunner> file_task_runner_;
base::WeakPtrFactory<Etc1ThumbnailHelper> weak_ptr_factory_{this};
};
} // namespace thumbnail
#endif // CHROME_BROWSER_THUMBNAIL_CC_ETC1_THUMBNAIL_HELPER_H_
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