c837a1a8de
All actual plugins follow the same logic to initialize their stream, this commit factorizes all of this to their base class: `LoaderPlugin`.
73 lines
2 KiB
C++
73 lines
2 KiB
C++
/*
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* Copyright (c) 2018-2021, the SerenityOS developers.
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#include <LibAudio/FlacLoader.h>
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#include <LibAudio/Loader.h>
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#include <LibAudio/MP3Loader.h>
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#include <LibAudio/WavLoader.h>
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namespace Audio {
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LoaderPlugin::LoaderPlugin(StringView path)
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: m_path(path)
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{
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}
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LoaderPlugin::LoaderPlugin(Bytes buffer)
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: m_backing_memory(buffer)
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{
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}
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MaybeLoaderError LoaderPlugin::initialize()
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{
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if (m_backing_memory.has_value())
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m_stream = LOADER_TRY(Core::Stream::MemoryStream::construct(m_backing_memory.value()));
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else
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m_stream = LOADER_TRY(Core::Stream::File::open(m_path, Core::Stream::OpenMode::Read));
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return {};
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}
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Loader::Loader(NonnullOwnPtr<LoaderPlugin> plugin)
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: m_plugin(move(plugin))
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{
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}
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Result<NonnullOwnPtr<LoaderPlugin>, LoaderError> Loader::try_create(StringView path)
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{
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NonnullOwnPtr<LoaderPlugin> plugin = adopt_own(*new WavLoaderPlugin(path));
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auto initstate0 = plugin->initialize();
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if (!initstate0.is_error())
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return plugin;
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plugin = adopt_own(*new FlacLoaderPlugin(path));
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auto initstate1 = plugin->initialize();
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if (!initstate1.is_error())
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return plugin;
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plugin = adopt_own(*new MP3LoaderPlugin(path));
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auto initstate2 = plugin->initialize();
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if (!initstate2.is_error())
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return plugin;
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return LoaderError { "No loader plugin available" };
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}
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Result<NonnullOwnPtr<LoaderPlugin>, LoaderError> Loader::try_create(Bytes& buffer)
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{
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NonnullOwnPtr<LoaderPlugin> plugin = adopt_own(*new WavLoaderPlugin(buffer));
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if (auto initstate = plugin->initialize(); !initstate.is_error())
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return plugin;
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plugin = adopt_own(*new FlacLoaderPlugin(buffer));
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if (auto initstate = plugin->initialize(); !initstate.is_error())
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return plugin;
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plugin = adopt_own(*new MP3LoaderPlugin(buffer));
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if (auto initstate = plugin->initialize(); !initstate.is_error())
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return plugin;
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return LoaderError { "No loader plugin available" };
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}
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}
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