Userland/Libraries/LibGfx/PNGLoader.h


1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38

/*
 * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
 *
 * SPDX-License-Identifier: BSD-2-Clause
 */

#pragma once

#include <LibGfx/ImageDecoder.h>

namespace Gfx {

struct PNGLoadingContext;

class PNGImageDecoderPlugin final : public ImageDecoderPlugin {
public:
    static ErrorOr<bool> sniff(ReadonlyBytes);
    static ErrorOr<NonnullOwnPtr<ImageDecoderPlugin>> create(ReadonlyBytes);

    virtual ~PNGImageDecoderPlugin() override;

    virtual IntSize size() override;
    virtual void set_volatile() override;
    [[nodiscard]] virtual bool set_nonvolatile(bool& was_purged) override;
    virtual bool initialize() override;
    virtual bool is_animated() override;
    virtual size_t loop_count() override;
    virtual size_t frame_count() override;
    virtual ErrorOr<ImageFrameDescriptor> frame(size_t index) override;
    virtual ErrorOr<Optional<ReadonlyBytes>> icc_data() override;

private:
    PNGImageDecoderPlugin(u8 const*, size_t);

    OwnPtr<PNGLoadingContext> m_context;
};

}