ladybird/Libraries/LibGfx/PGMLoader.h

/*
 * Copyright (c) 2020, Hüseyin ASLITÜRK <asliturk@hotmail.com>
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *
 * 1. Redistributions of source code must retain the above copyright notice, this
 *    list of conditions and the following disclaimer.
 *
 * 2. Redistributions in binary form must reproduce the above copyright notice,
 *    this list of conditions and the following disclaimer in the documentation
 *    and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

#pragma once

#include <LibGfx/Bitmap.h>
#include <LibGfx/ImageDecoder.h>

namespace Gfx {

RefPtr<Gfx::Bitmap> load_pgm(const StringView& path);
RefPtr<Gfx::Bitmap> load_pgm_from_memory(const u8*, size_t);

struct PGMLoadingContext;

class PGMImageDecoderPlugin final : public ImageDecoderPlugin {
public:
    PGMImageDecoderPlugin(const u8*, size_t);
    virtual ~PGMImageDecoderPlugin() override;

    virtual IntSize size() override;
    virtual RefPtr<Gfx::Bitmap> bitmap() override;

    virtual void set_volatile() override;
    [[nodiscard]] virtual bool set_nonvolatile() override;

    virtual bool sniff() override;

    virtual bool is_animated() override;
    virtual size_t loop_count() override;
    virtual size_t frame_count() override;
    virtual ImageFrameDescriptor frame(size_t i) override;

private:
    OwnPtr<PGMLoadingContext> m_context;
};

}