/*

 * Copyright (c) 2020, Hüseyin ASLITÜRK <asliturk@hotmail.com>

 * Copyright (c) 2022, the SerenityOS developers.

 *

 * SPDX-License-Identifier: BSD-2-Clause

 */

#include "PPMLoader.h"

#include "PortableImageLoaderCommon.h"

namespace Gfx {

ErrorOr<void> read_image_data(PPMLoadingContext& context)

{

    auto const context_size = context.width * context.height;

    TRY(create_bitmap(context));

    auto& stream = *context.stream;

    if (context.type == PPMLoadingContext::Type::ASCII) {

        for (u64 i = 0; i < context_size; ++i) {

            auto const red = TRY(read_number(stream));

            TRY(read_whitespace(context));

            auto const green = TRY(read_number(stream));

            TRY(read_whitespace(context));

            auto const blue = TRY(read_number(stream));

            TRY(read_whitespace(context));

            Color color { static_cast<u8>(red), static_cast<u8>(green), static_cast<u8>(blue) };

            if (context.format_details.max_val < 255)

                color = adjust_color(context.format_details.max_val, color);

            context.bitmap->set_pixel(i % context.width, i / context.width, color);

        }

    } else if (context.type == PPMLoadingContext::Type::RAWBITS) {

        for (u64 i = 0; i < context_size; ++i) {

            Array<u8, 3> pixel;

            Bytes buffer { pixel };

            TRY(stream.read_until_filled(buffer));

            context.bitmap->set_pixel(i % context.width, i / context.width, { pixel[0], pixel[1], pixel[2] });

        }

    }

    return {};

}

}