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70 lines
1.7 KiB
C++
70 lines
1.7 KiB
C++
// Aseprite Document Library
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// Copyright (c) 2001-2017 David Capello
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//
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// This file is released under the terms of the MIT license.
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// Read LICENSE.txt for more information.
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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#include "doc/mask_io.h"
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#include "base/serialization.h"
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#include "base/unique_ptr.h"
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#include "doc/mask.h"
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#include <iostream>
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namespace doc {
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using namespace base::serialization;
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using namespace base::serialization::little_endian;
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// Serialized Mask data:
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//
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// WORD[4] x, y, w, h
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// for each line ("h" times)
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// for each packet ("((w+7)/8)" times)
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// BYTE 8 pixels of the mask
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// BYTE for Indexed images
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void write_mask(std::ostream& os, const Mask* mask)
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{
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const gfx::Rect& bounds = mask->bounds();
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write16(os, bounds.x); // Xpos
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write16(os, bounds.y); // Ypos
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write16(os, mask->bitmap() ? bounds.w: 0); // Width
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write16(os, mask->bitmap() ? bounds.h: 0); // Height
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if (mask->bitmap()) {
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int size = BitmapTraits::getRowStrideBytes(bounds.w);
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for (int c=0; c<bounds.h; c++)
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os.write((char*)mask->bitmap()->getPixelAddress(0, c), size);
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}
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}
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Mask* read_mask(std::istream& is)
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{
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int x = int16_t(read16(is)); // Xpos (it's a signed int16 because we support negative mask coordinates)
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int y = int16_t(read16(is)); // Ypos
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int w = read16(is); // Width
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int h = read16(is); // Height
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base::UniquePtr<Mask> mask(new Mask());
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if (w > 0 && h > 0) {
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int size = BitmapTraits::getRowStrideBytes(w);
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mask->add(gfx::Rect(x, y, w, h));
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for (int c=0; c<mask->bounds().h; c++)
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is.read((char*)mask->bitmap()->getPixelAddress(0, c), size);
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}
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return mask.release();
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}
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}
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