Exposed metadata for each embedded picture

src/libs/av/impl/AudioFile.cpp

@@ -34,6 +34,8 @@ extern "C"
 #include "core/ILogger.hpp"
 #include "core/String.hpp"
 
+#include "av/Types.hpp"
+
 namespace lms::av
 {
     namespace
@@ -43,9 +45,9 @@ namespace lms::av
             std::array<char, 128> buf = { 0 };
 
             if (::av_strerror(error, buf.data(), buf.size()) == 0)
-                return &buf[0];
-            else
-                return "Unknown error";
+                return buf.data();
+
+            return "Unknown error";
         }
 
         class AudioFileException : public Exception
@@ -158,7 +160,7 @@ namespace lms::av
     {
         ContainerInfo info;
         info.bitrate = _context->bit_rate;
-        info.duration = std::chrono::milliseconds{ _context->duration == AV_NOPTS_VALUE ? 0 : _context->duration / AV_TIME_BASE * 1000 };
+        info.duration = std::chrono::milliseconds{ _context->duration == AV_NOPTS_VALUE ? 0 : _context->duration / AV_TIME_BASE * 1'000 };
         info.name = _context->iformat->name;
 
         return info;
@@ -237,7 +239,7 @@ namespace lms::av
         return false;
     }
 
-    void AudioFile::visitAttachedPictures(std::function<void(const Picture&)> func) const
+    void AudioFile::visitAttachedPictures(std::function<void(const Picture&, const MetadataMap&)> func) const
     {
         static const std::unordered_map<int, std::string> codecMimeMap{
             { AV_CODEC_ID_BMP, "image/x-bmp" },
@@ -262,6 +264,9 @@ namespace lms::av
                 continue;
             }
 
+            MetadataMap metadata;
+            getMetaDataFromDictionnary(avstream->metadata, metadata);
+
             Picture picture;
 
             auto itMime = codecMimeMap.find(avstream->codecpar->codec_id);
@@ -280,7 +285,7 @@ namespace lms::av
             picture.data = reinterpret_cast<const std::byte*>(pkt.data);
             picture.dataSize = pkt.size;
 
-            func(picture);
+            func(picture, metadata);
         }
     }
 

src/libs/av/impl/AudioFile.hpp

@@ -25,12 +25,13 @@ struct AVFormatContext;
 
 namespace lms::av
 {
-
     class AudioFile final : public IAudioFile
     {
     public:
         AudioFile(const std::filesystem::path& p);
-        ~AudioFile();
+        ~AudioFile() override;
+        AudioFile(const AudioFile&) = delete;
+        AudioFile& operator=(const AudioFile&) = delete;
 
         const std::filesystem::path& getPath() const override;
         ContainerInfo getContainerInfo() const override;
@@ -39,16 +40,12 @@ namespace lms::av
         std::optional<StreamInfo> getBestStreamInfo() const override;
         std::optional<std::size_t> getBestStreamIndex() const override;
         bool hasAttachedPictures() const override;
-        void visitAttachedPictures(std::function<void(const Picture&)> func) const override;
+        void visitAttachedPictures(std::function<void(const Picture&, const MetadataMap&)> func) const override;
 
     private:
-        AudioFile(const AudioFile&) = delete;
-        AudioFile& operator=(const AudioFile&) = delete;
-
         std::optional<StreamInfo> getStreamInfo(std::size_t streamIndex) const;
 
         const std::filesystem::path _p;
         AVFormatContext* _context{};
     };
-
 } // namespace lms::av

src/libs/av/include/av/IAudioFile.hpp

@@ -28,8 +28,6 @@
 #include <unordered_map>
 #include <vector>
 
-#include "Types.hpp"
-
 namespace lms::av
 {
     // List should be sync with the codecs shipped in the lms's docker version
@@ -62,14 +60,14 @@ namespace lms::av
     struct Picture
     {
         std::string mimeType;
-        const std::byte* data{};
+        const std::byte* data{}; // valid as long as IAudioFile exists
         std::size_t dataSize{};
     };
 
     struct ContainerInfo
     {
         std::size_t bitrate{};
-        std::string name{};
+        std::string name;
         std::chrono::milliseconds duration{};
     };
 
@@ -99,7 +97,7 @@ namespace lms::av
         virtual std::optional<StreamInfo> getBestStreamInfo() const = 0;   // none if failure/unknown
         virtual std::optional<std::size_t> getBestStreamIndex() const = 0; // none if failure/unknown
         virtual bool hasAttachedPictures() const = 0;
-        virtual void visitAttachedPictures(std::function<void(const Picture&)> func) const = 0;
+        virtual void visitAttachedPictures(std::function<void(const Picture&, const MetadataMap& metadata)> func) const = 0;
     };
 
     std::unique_ptr<IAudioFile> parseAudioFile(const std::filesystem::path& p);

src/libs/services/artwork/impl/ArtworkService.cpp

@@ -20,11 +20,9 @@
 #include "ArtworkService.hpp"
 
 #include "av/IAudioFile.hpp"
+#include "av/Types.hpp"
 #include "core/IConfig.hpp"
 #include "core/ILogger.hpp"
-#include "core/Path.hpp"
-#include "core/Random.hpp"
-#include "core/String.hpp"
 #include "core/Utils.hpp"
 #include "database/Artist.hpp"
 #include "database/Db.hpp"
@@ -71,7 +69,7 @@ namespace lms::cover
     {
         std::unique_ptr<IEncodedImage> image;
 
-        input.visitAttachedPictures([&](const av::Picture& picture) {
+        input.visitAttachedPictures([&](const av::Picture& picture, const av::IAudioFile::MetadataMap& /* metadata */) {
             if (image)
                 return;