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Added replay gain support for ogg, flac, and mp4.

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This commit is contained in:
casey langen 2017-12-16 23:54:34 -08:00
parent eae2f896f9
commit 536cac1266
2 changed files with 68 additions and 0 deletions
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55
src/plugins/taglib_plugin/TaglibMetadataReader.cpp
View File

@ -221,6 +221,7 @@ bool TaglibMetadataReader::ReadGeneric(const char* uri, musik::core::sdk::ITagSt
auto xiphTag = dynamic_cast<TagLib::Ogg::XiphComment*>(tag);
if (xiphTag) {
this->ReadFromMap(xiphTag->fieldListMap(), target);
this->ExtractReplayGain(xiphTag->fieldListMap(), target);
}
/* if this isn't a xiph tag, the file format may have some other custom
@ -233,6 +234,7 @@ bool TaglibMetadataReader::ReadGeneric(const char* uri, musik::core::sdk::ITagSt
auto flacFile = dynamic_cast<TagLib::FLAC::File*>(file.file());
if (flacFile && flacFile->hasXiphComment()) {
this->ReadFromMap(flacFile->xiphComment()->fieldListMap(), target);
this->ExtractReplayGain(flacFile->xiphComment()->fieldListMap(), target);
handled = true;
}
@ -245,6 +247,7 @@ bool TaglibMetadataReader::ReadGeneric(const char* uri, musik::core::sdk::ITagSt
auto mp4TagMap = static_cast<TagLib::MP4::Tag*>(tag)->itemListMap();
this->ExtractValueForKey(mp4TagMap, "aART", "album_artist", target);
this->ExtractValueForKey(mp4TagMap, "disk", "disc", target);
this->ExtractReplayGain(mp4TagMap, target);
}
}
}
@ -273,6 +276,20 @@ void TaglibMetadataReader::ExtractValueForKey(
}
}
std::string TaglibMetadataReader::ExtractValueForKey(
const TagLib::MP4::ItemMap& map,
const std::string& inputKey,
const std::string& defaultValue)
{
if (map.contains(inputKey.c_str())) {
TagLib::StringList value = map[inputKey.c_str()].toStringList();
if (value.size()) {
return value[0].to8Bit();
}
}
return defaultValue;
}
template <typename T>
void TaglibMetadataReader::ExtractValueForKey(
const T& map,
@ -295,6 +312,44 @@ void TaglibMetadataReader::ReadFromMap(const T& map, musik::core::sdk::ITagStore
ExtractValueForKey(map, "ALBUMARTIST", "album_artist", target);
}
template <typename T>
std::string TaglibMetadataReader::ExtractValueForKey(
const T& map,
const std::string& inputKey,
const std::string& defaultValue)
{
if (map.contains(inputKey.c_str())) {
TagLib::StringList value = map[inputKey.c_str()];
if (value.size()) {
return value[0].to8Bit();
}
}
return defaultValue;
}
template <typename T>
void TaglibMetadataReader::ExtractReplayGain(
const T& map, musik::core::sdk::ITagStore *target)
{
try {
musik::core::sdk::ReplayGain replayGain;
initReplayGain(replayGain);
replayGain.trackGain = toReplayGainFloat(ExtractValueForKey(map, "REPLAYGAIN_TRACK_GAIN", "1.0"));
replayGain.trackPeak = toReplayGainFloat(ExtractValueForKey(map, "REPLAYGAIN_TRACK_PEAK", "1.0"));
replayGain.albumGain = toReplayGainFloat(ExtractValueForKey(map, "REPLAYGAIN_ALBUM_GAIN", "1.0"));
replayGain.albumPeak = toReplayGainFloat(ExtractValueForKey(map, "REPLAYGAIN_ALBUM_PEAK", "1.0"));
if (replayGain.albumGain != 1.0f && replayGain.albumPeak != 1.0f &&
replayGain.trackGain != 1.0f && replayGain.trackPeak != 1.0f)
{
target->SetReplayGain(replayGain);
}
}
catch (...) {
/* let's not allow weird replay gain tags to crash indexing... */
}
}
bool TaglibMetadataReader::ReadID3V2(const char* uri, musik::core::sdk::ITagStore *track) {
TagLib::ID3v2::FrameFactory::instance()->setDefaultTextEncoding(TagLib::String::UTF8);

13
src/plugins/taglib_plugin/TaglibMetadataReader.h
View File

@ -77,12 +77,25 @@ class TaglibMetadataReader : public musik::core::sdk::ITagReader {
const std::string& outputKey,
musik::core::sdk::ITagStore *target);
template <typename T> std::string ExtractValueForKey(
const T& map,
const std::string& inputKey,
const std::string& defaultValue);
template <typename T> void ExtractReplayGain(
const T& map, musik::core::sdk::ITagStore *target);
void ExtractValueForKey(
const TagLib::MP4::ItemMap& map,
const std::string& inputKey,
const std::string& outputKey,
musik::core::sdk::ITagStore *target);
std::string ExtractValueForKey(
const TagLib::MP4::ItemMap& map,
const std::string& inputKey,
const std::string& defaultValue);
void SetTagValue(
const char* key,
const char* string,musik::core::sdk::ITagStore *target);