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LibAudio: Switch LoaderPlugin to a more traditional constructor pattern

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This now prepares all the needed (fallible) components before actually
constructing a LoaderPlugin object, so we are no longer filling them in
at an arbitrary later point in time.
This commit is contained in:
Tim Schumacher 2022-12-05 00:41:23 +01:00 • committed by Andreas Kling
parent 3cf93d0dd2
commit c57be0f474
12 changed files with 132 additions and 86 deletions
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32
Userland/Libraries/LibAudio/WavLoader.cpp
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@ -18,24 +18,38 @@ namespace Audio {
static constexpr size_t const maximum_wav_size = 1 * GiB; // FIXME: is there a more appropriate size limit?
WavLoaderPlugin::WavLoaderPlugin(StringView path)
: LoaderPlugin(path)
WavLoaderPlugin::WavLoaderPlugin(OwnPtr<Core::Stream::SeekableStream> stream)
: LoaderPlugin(move(stream))
{
}
Result<NonnullOwnPtr<WavLoaderPlugin>, LoaderError> WavLoaderPlugin::try_create(StringView path)
{
auto stream = LOADER_TRY(Core::Stream::BufferedFile::create(LOADER_TRY(Core::Stream::File::open(path, Core::Stream::OpenMode::Read))));
auto loader = make<WavLoaderPlugin>(move(stream));
LOADER_TRY(loader->initialize());
return loader;
}
Result<NonnullOwnPtr<WavLoaderPlugin>, LoaderError> WavLoaderPlugin::try_create(Bytes buffer)
{
auto stream = LOADER_TRY(Core::Stream::MemoryStream::construct(buffer));
auto loader = make<WavLoaderPlugin>(move(stream));
LOADER_TRY(loader->initialize());
return loader;
}
MaybeLoaderError WavLoaderPlugin::initialize()
{
LOADER_TRY(LoaderPlugin::initialize());
LOADER_TRY(parse_header());
TRY(parse_header());
return {};
}
WavLoaderPlugin::WavLoaderPlugin(Bytes buffer)
: LoaderPlugin(buffer)
{
}
template<typename SampleReader>
MaybeLoaderError WavLoaderPlugin::read_samples_from_stream(Core::Stream::Stream& stream, SampleReader read_sample, FixedArray<Sample>& samples) const
{