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e4394b1605
Instead of using a low-level, proprietary API inside LibGfx, let's use Core::AnonymousBuffer which already abstracts anon_fd and offers a higher-level API too.
87 lines
2.4 KiB
C++
87 lines
2.4 KiB
C++
/*
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* Copyright (c) 2020, Andreas Kling <kling@serenityos.org>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#include <LibGfx/Bitmap.h>
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#include <LibGfx/ShareableBitmap.h>
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#include <LibGfx/Size.h>
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#include <LibIPC/Decoder.h>
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#include <LibIPC/Encoder.h>
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#include <LibIPC/File.h>
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namespace Gfx {
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ShareableBitmap::ShareableBitmap(const Bitmap& bitmap)
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: m_bitmap(bitmap.to_bitmap_backed_by_anonymous_buffer())
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{
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}
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ShareableBitmap::ShareableBitmap(NonnullRefPtr<Bitmap> bitmap, Tag)
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: m_bitmap(move(bitmap))
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{
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}
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}
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namespace IPC {
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bool encode(Encoder& encoder, const Gfx::ShareableBitmap& shareable_bitmap)
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{
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encoder << shareable_bitmap.is_valid();
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if (!shareable_bitmap.is_valid())
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return true;
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auto& bitmap = *shareable_bitmap.bitmap();
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encoder << IPC::File(bitmap.anonymous_buffer().fd());
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encoder << bitmap.size();
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encoder << bitmap.scale();
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encoder << (u32)bitmap.format();
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if (bitmap.is_indexed()) {
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auto palette = bitmap.palette_to_vector();
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encoder << palette;
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}
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return true;
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}
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bool decode(Decoder& decoder, Gfx::ShareableBitmap& shareable_bitmap)
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{
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bool valid = false;
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if (!decoder.decode(valid))
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return false;
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if (!valid) {
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shareable_bitmap = {};
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return true;
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}
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IPC::File anon_file;
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if (!decoder.decode(anon_file))
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return false;
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Gfx::IntSize size;
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if (!decoder.decode(size))
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return false;
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u32 scale;
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if (!decoder.decode(scale))
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return false;
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u32 raw_bitmap_format;
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if (!decoder.decode(raw_bitmap_format))
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return false;
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if (!Gfx::is_valid_bitmap_format(raw_bitmap_format))
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return false;
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auto bitmap_format = (Gfx::BitmapFormat)raw_bitmap_format;
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Vector<Gfx::RGBA32> palette;
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if (Gfx::Bitmap::is_indexed(bitmap_format)) {
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if (!decoder.decode(palette))
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return false;
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}
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auto buffer = Core::AnonymousBuffer::create_from_anon_fd(anon_file.take_fd(), Gfx::Bitmap::size_in_bytes(Gfx::Bitmap::minimum_pitch(size.width(), bitmap_format), size.height()));
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if (!buffer.is_valid())
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return false;
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auto bitmap = Gfx::Bitmap::create_with_anonymous_buffer(bitmap_format, buffer, size, scale, palette);
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if (!bitmap)
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return false;
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shareable_bitmap = Gfx::ShareableBitmap { bitmap.release_nonnull(), Gfx::ShareableBitmap::ConstructWithKnownGoodBitmap };
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return true;
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}
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}
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