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6a23dfbc92
PBM, PGM, and PPM image loaders are mostly common. The only difference is how the data is read and the associated magic numbers. The magic numbers are already made common using the loading contexts. Now make the implementations common via a class template which accepts the context to disambiguate.
73 lines
1.8 KiB
C++
73 lines
1.8 KiB
C++
/*
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* Copyright (c) 2020, Hüseyin ASLITÜRK <asliturk@hotmail.com>
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* Copyright (c) 2022, the SerenityOS developers.
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#include "PPMLoader.h"
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#include "PortableImageLoaderCommon.h"
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#include "Streamer.h"
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#include <AK/Endian.h>
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#include <AK/LexicalPath.h>
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#include <AK/ScopeGuard.h>
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#include <AK/StringBuilder.h>
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#include <string.h>
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namespace Gfx {
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bool read_image_data(PPMLoadingContext& context, Streamer& streamer)
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{
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Vector<Gfx::Color> color_data;
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color_data.ensure_capacity(context.width * context.height);
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if (context.type == PPMLoadingContext::Type::ASCII) {
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u16 red;
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u16 green;
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u16 blue;
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while (true) {
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if (!read_number(streamer, &red))
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break;
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if (!read_whitespace(context, streamer))
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break;
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if (!read_number(streamer, &green))
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break;
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if (!read_whitespace(context, streamer))
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break;
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if (!read_number(streamer, &blue))
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break;
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if (!read_whitespace(context, streamer))
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break;
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Color color { (u8)red, (u8)green, (u8)blue };
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if (context.format_details.max_val < 255)
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color = adjust_color(context.format_details.max_val, color);
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color_data.append(color);
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}
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} else if (context.type == PPMLoadingContext::Type::RAWBITS) {
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u8 pixel[3];
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while (streamer.read_bytes(pixel, 3)) {
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color_data.append({ pixel[0], pixel[1], pixel[2] });
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}
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}
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if (context.width * context.height != color_data.size())
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return false;
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if (!create_bitmap(context)) {
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return false;
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}
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set_pixels(context, color_data);
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context.state = PPMLoadingContext::State::Bitmap;
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return true;
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}
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}
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