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LibVideo: Propagate decoder errors in the Matroska Reader

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Matroska::Reader functions now return DecoderErrorOr instead of values
being declared Optional. Useful errors can be handled by the users of
the parser, similarly to the VP9 decoder. A lot of the error checking
in the reader is a lot cleaner thanks to this change, since all reads
can be range checked in Streamer::read_octet() now.

Most functions for the Streamer class are now also out-of-line in
Reader.cpp now instead of residing in the header.
This commit is contained in:
Zaggy1024 2022-11-09 23:38:50 -06:00 • committed by Andreas Kling
parent 9cf7e8c5aa
commit 2dfd236dcd
6 changed files with 338 additions and 440 deletions
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14
Userland/Libraries/LibVideo/Containers/Matroska/MatroskaDemuxer.cpp
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@ -10,22 +10,12 @@ namespace Video::Matroska {
DecoderErrorOr<NonnullOwnPtr<MatroskaDemuxer>> MatroskaDemuxer::from_file(StringView filename)
{
// FIXME: MatroskaReader should return errors.
auto nullable_document = Reader::parse_matroska_from_file(filename);
if (!nullable_document)
return DecoderError::format(DecoderErrorCategory::IO, "Failed to open matroska from file '{}'", filename);
auto document = nullable_document.release_nonnull();
return make<MatroskaDemuxer>(document);
return make<MatroskaDemuxer>(TRY(Reader::parse_matroska_from_file(filename)));
}
DecoderErrorOr<NonnullOwnPtr<MatroskaDemuxer>> MatroskaDemuxer::from_data(ReadonlyBytes data)
{
// FIXME: MatroskaReader should return errors.
auto nullable_document = Reader::parse_matroska_from_data(data.data(), data.size());
if (!nullable_document)
return DecoderError::format(DecoderErrorCategory::IO, "Failed to open matroska from data");
auto document = nullable_document.release_nonnull();
return make<MatroskaDemuxer>(document);
return make<MatroskaDemuxer>(TRY(Reader::parse_matroska_from_data(data.data(), data.size())));
}
Vector<Track> MatroskaDemuxer::get_tracks_for_type(TrackType type)