tag/Handler: implement FullTagHandler::OnAudioFormat()

src/TagFile.cxx

@@ -100,9 +100,10 @@ ScanFileTagsNoGeneric(Path path_fs, TagHandler &handler) noexcept
 }
 
 bool
-ScanFileTagsWithGeneric(Path path, TagBuilder &builder) noexcept
+ScanFileTagsWithGeneric(Path path, TagBuilder &builder,
+			AudioFormat *audio_format) noexcept
 {
-	FullTagHandler h(builder);
+	FullTagHandler h(builder, audio_format);
 
 	if (!ScanFileTagsNoGeneric(path, h))
 		return false;

src/TagFile.hxx

@@ -22,6 +22,7 @@
 
 #include "check.h"
 
+struct AudioFormat;
 class Path;
 class TagHandler;
 class TagBuilder;
@@ -46,6 +47,7 @@ ScanFileTagsNoGeneric(Path path, TagHandler &handler) noexcept;
  * found)
  */
 bool
-ScanFileTagsWithGeneric(Path path, TagBuilder &builder) noexcept;
+ScanFileTagsWithGeneric(Path path, TagBuilder &builder,
+			AudioFormat *audio_format=nullptr) noexcept;
 
 #endif

src/TagStream.cxx

@@ -85,11 +85,12 @@ try {
 }
 
 bool
-tag_stream_scan(InputStream &is, TagBuilder &builder) noexcept
+tag_stream_scan(InputStream &is, TagBuilder &builder,
+		AudioFormat *audio_format) noexcept
 {
 	assert(is.IsReady());
 
-	FullTagHandler h(builder);
+	FullTagHandler h(builder, audio_format);
 
 	if (!tag_stream_scan(is, h))
 		return false;
@@ -101,12 +102,13 @@ tag_stream_scan(InputStream &is, TagBuilder &builder) noexcept
 }
 
 bool
-tag_stream_scan(const char *uri, TagBuilder &builder) noexcept
+tag_stream_scan(const char *uri, TagBuilder &builder,
+		AudioFormat *audio_format) noexcept
 try {
 	Mutex mutex;
 
 	auto is = InputStream::OpenReady(uri, mutex);
-	return tag_stream_scan(*is, builder);
+	return tag_stream_scan(*is, builder, audio_format);
 } catch (const std::exception &e) {
 	return false;
 }

src/TagStream.hxx

@@ -22,6 +22,7 @@
 
 #include "check.h"
 
+struct AudioFormat;
 class InputStream;
 class TagHandler;
 class TagBuilder;
@@ -48,9 +49,11 @@ tag_stream_scan(const char *uri, TagHandler &handler) noexcept;
  * found)
  */
 bool
-tag_stream_scan(InputStream &is, TagBuilder &builder) noexcept;
+tag_stream_scan(InputStream &is, TagBuilder &builder,
+		AudioFormat *audio_format=nullptr) noexcept;
 
 bool
-tag_stream_scan(const char *uri, TagBuilder &builder) noexcept;
+tag_stream_scan(const char *uri, TagBuilder &builder,
+		AudioFormat *audio_format=nullptr) noexcept;
 
 #endif

src/tag/Handler.cxx

@@ -57,3 +57,9 @@ FullTagHandler::OnPair(const char *name, gcc_unused const char *value) noexcept
 		tag.SetHasPlaylist(true);
 }
 
+void
+FullTagHandler::OnAudioFormat(AudioFormat af) noexcept
+{
+	if (audio_format != nullptr)
+		*audio_format = af;
+}

src/tag/Handler.hxx

@@ -140,15 +140,23 @@ public:
  * attribute.
  */
 class FullTagHandler : public AddTagHandler {
+	AudioFormat *const audio_format;
+
 protected:
-	FullTagHandler(unsigned _want_mask, TagBuilder &_builder) noexcept
-		:AddTagHandler(WANT_PAIR|_want_mask, _builder) {}
+	FullTagHandler(unsigned _want_mask, TagBuilder &_builder,
+		       AudioFormat *_audio_format) noexcept
+		:AddTagHandler(WANT_PAIR|_want_mask
+			       |(_audio_format ? WANT_AUDIO_FORMAT : 0),
+			       _builder),
+		 audio_format(_audio_format) {}
 
 public:
-	explicit FullTagHandler(TagBuilder &_builder) noexcept
-		:FullTagHandler(0, _builder) {}
+	explicit FullTagHandler(TagBuilder &_builder,
+				AudioFormat *_audio_format=nullptr) noexcept
+		:FullTagHandler(0, _builder, _audio_format) {}
 
 	void OnPair(const char *key, const char *value) noexcept override;
+	void OnAudioFormat(AudioFormat af) noexcept override;
 };
 
 #endif