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/*
* Copyright (c) 2020, Hüseyin ASLITÜRK <asliturk@hotmail.com>
* Copyright (c) 2022, the SerenityOS developers.
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#include "PBMLoader.h"
#include "PortableImageLoaderCommon.h"
namespace Gfx {
ErrorOr<void> read_image_data(PBMLoadingContext& context)
{
auto& stream = *context.stream;
Vector<Gfx::Color> color_data;
auto const context_size = context.width * context.height;
color_data.resize(context_size);
if (context.type == PBMLoadingContext::Type::ASCII) {
for (u64 i = 0; i < context_size; ++i) {
auto const byte = TRY(stream.read_value<u8>());
if (byte == '0')
color_data[i] = Color::White;
else if (byte == '1')
color_data[i] = Color::Black;
else
i--;
}
} else if (context.type == PBMLoadingContext::Type::RAWBITS) {
for (u64 color_index = 0; color_index < context_size;) {
auto byte = TRY(stream.read_value<u8>());
for (int i = 0; i < 8; i++) {
auto const val = byte & 0x80;
if (val == 0)
color_data[color_index] = Color::White;
else
color_data[color_index] = Color::Black;
byte = byte << 1;
color_index++;
if (color_index % context.width == 0) {
break;
}
}
}
}
TRY(create_bitmap(context));
set_pixels(context, color_data);
context.state = PBMLoadingContext::State::Bitmap;
return {};
}
}
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