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LibAudio: Detect and read FLAC metadata

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FLAC uses the very simple vorbis comment metadata format, which we can
now read most standard and non-standard fields from.
This commit is contained in:
kleines Filmröllchen 2023-03-07 16:58:01 +01:00 • committed by Tim Flynn
parent d8e8ddedf3
commit a8963a270f
5 changed files with 160 additions and 1 deletions
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16
Userland/Libraries/LibAudio/FlacLoader.cpp
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@ -21,6 +21,7 @@
#include <LibAudio/FlacTypes.h>
#include <LibAudio/LoaderError.h>
#include <LibAudio/Resampler.h>
#include <LibAudio/VorbisComment.h>
#include <LibCore/File.h>
namespace Audio {
@ -131,6 +132,10 @@ MaybeLoaderError FlacLoaderPlugin::parse_header()
[[fallthrough]];
case FlacMetadataBlockType::PADDING:
// Note: A padding block is empty and does not need any treatment.
break;
case FlacMetadataBlockType::VORBIS_COMMENT:
load_vorbis_comment(block);
break;
default:
// TODO: Parse the remaining metadata block types.
break;
@ -180,6 +185,17 @@ MaybeLoaderError FlacLoaderPlugin::load_picture(FlacRawMetadataBlock& block)
return {};
}
// 11.15. METADATA_BLOCK_VORBIS_COMMENT
void FlacLoaderPlugin::load_vorbis_comment(FlacRawMetadataBlock& block)
{
auto metadata_or_error = Audio::load_vorbis_comment(block.data);
if (metadata_or_error.is_error()) {
dbgln("FLAC Warning: Vorbis comment invalid, error: {}", metadata_or_error.release_error());
return;
}
m_metadata = metadata_or_error.release_value();
}
// 11.13. METADATA_BLOCK_SEEKTABLE
MaybeLoaderError FlacLoaderPlugin::load_seektable(FlacRawMetadataBlock& block)
{