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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 "PGMLoader.h"
#include "PortableImageLoaderCommon.h"
#include "Streamer.h"
#include <AK/Endian.h>
#include <string.h>
namespace Gfx {
static void set_adjusted_pixels(PGMLoadingContext& context, Vector<Gfx::Color> const& color_data)
{
size_t index = 0;
for (size_t y = 0; y < context.height; ++y) {
for (size_t x = 0; x < context.width; ++x) {
Color color = color_data.at(index);
if (context.format_details.max_val < 255) {
color = adjust_color(context.format_details.max_val, color);
}
context.bitmap->set_pixel(x, y, color);
++index;
}
}
}
bool read_image_data(PGMLoadingContext& context, Streamer& streamer)
{
Vector<Gfx::Color> color_data;
if (context.type == PGMLoadingContext::Type::ASCII) {
u16 value;
while (true) {
if (!read_number(streamer, &value))
break;
if (!read_whitespace(context, streamer))
break;
color_data.append({ (u8)value, (u8)value, (u8)value });
}
} else if (context.type == PGMLoadingContext::Type::RAWBITS) {
u8 pixel;
while (streamer.read(pixel)) {
color_data.append({ pixel, pixel, pixel });
}
}
size_t context_size = (u32)context.width * (u32)context.height;
if (context_size != color_data.size()) {
dbgln("Not enough color data in image.");
return false;
}
if (!create_bitmap(context))
return false;
set_adjusted_pixels(context, color_data);
context.state = PGMLoadingContext::State::Bitmap;
return true;
}
}
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