ab99ed5fba
In doing so, this removes all uses of the Encoder's stream operator, except for where it is currently still used in the generated IPC code. So the stream operator currently discards any errors, which is the existing behavior. A subsequent commit will propagate the errors.
70 lines
2.2 KiB
C++
70 lines
2.2 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(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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template<>
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ErrorOr<void> encode(Encoder& encoder, Gfx::ShareableBitmap const& shareable_bitmap)
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{
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TRY(encoder.encode(shareable_bitmap.is_valid()));
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if (!shareable_bitmap.is_valid())
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return {};
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auto& bitmap = *shareable_bitmap.bitmap();
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TRY(encoder.encode(IPC::File(bitmap.anonymous_buffer().fd())));
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TRY(encoder.encode(bitmap.size()));
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TRY(encoder.encode(static_cast<u32>(bitmap.scale())));
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TRY(encoder.encode(static_cast<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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TRY(encoder.encode(palette));
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}
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return {};
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}
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template<>
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ErrorOr<Gfx::ShareableBitmap> decode(Decoder& decoder)
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{
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if (auto valid = TRY(decoder.decode<bool>()); !valid)
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return Gfx::ShareableBitmap {};
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auto anon_file = TRY(decoder.decode<IPC::File>());
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auto size = TRY(decoder.decode<Gfx::IntSize>());
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auto scale = TRY(decoder.decode<u32>());
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auto raw_bitmap_format = TRY(decoder.decode<u32>());
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if (!Gfx::is_valid_bitmap_format(raw_bitmap_format))
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return Error::from_string_literal("IPC: Invalid Gfx::ShareableBitmap format");
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auto bitmap_format = static_cast<Gfx::BitmapFormat>(raw_bitmap_format);
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Vector<Gfx::ARGB32> palette;
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if (Gfx::Bitmap::is_indexed(bitmap_format))
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palette = TRY(decoder.decode<decltype(palette)>());
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auto buffer = TRY(Core::AnonymousBuffer::create_from_anon_fd(anon_file.take_fd(), Gfx::Bitmap::size_in_bytes(Gfx::Bitmap::minimum_pitch(size.width() * scale, bitmap_format), size.height() * scale)));
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auto bitmap = TRY(Gfx::Bitmap::try_create_with_anonymous_buffer(bitmap_format, move(buffer), size, scale, palette));
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return Gfx::ShareableBitmap { move(bitmap), Gfx::ShareableBitmap::ConstructWithKnownGoodBitmap };
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}
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}
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