decoder/Plugin: add "noexcept"

src/decoder/DecoderPlugin.hxx

@@ -48,7 +48,7 @@ struct DecoderPlugin {
 	 * Deinitialize a decoder plugin which was initialized
 	 * successfully.  Optional method.
 	 */
-	void (*finish)();
+	void (*finish)() noexcept;
 
 	/**
 	 * Decode a stream (data read from an #InputStream object).
@@ -73,7 +73,7 @@ struct DecoderPlugin {
 	 */
 	bool (*scan_file)(Path path_fs,
 			  const TagHandler &handler,
-			  void *handler_ctx);
+			  void *handler_ctx) noexcept;
 
 	/**
 	 * Scan metadata of a file.
@@ -82,7 +82,7 @@ struct DecoderPlugin {
 	 */
 	bool (*scan_stream)(InputStream &is,
 			    const TagHandler &handler,
-			    void *handler_ctx);
+			    void *handler_ctx) noexcept;
 
 	/**
 	 * @brief Return a "virtual" filename for subtracks in
@@ -140,7 +140,7 @@ struct DecoderPlugin {
 	 */
 	template<typename P>
 	bool ScanFile(P path_fs,
-		      const TagHandler &handler, void *handler_ctx) const {
+		      const TagHandler &handler, void *handler_ctx) const noexcept {
 		return scan_file != nullptr
 			? scan_file(path_fs, handler, handler_ctx)
 			: false;
@@ -150,7 +150,7 @@ struct DecoderPlugin {
 	 * Read the tag of a stream.
 	 */
 	bool ScanStream(InputStream &is,
-			const TagHandler &handler, void *handler_ctx) const {
+			const TagHandler &handler, void *handler_ctx) const noexcept {
 		return scan_stream != nullptr
 			? scan_stream(is, handler, handler_ctx)
 			: false;

src/decoder/plugins/AudiofileDecoderPlugin.cxx

@@ -257,7 +257,7 @@ audiofile_get_duration(InputStream &is) noexcept
 
 static bool
 audiofile_scan_stream(InputStream &is,
-		      const TagHandler &handler, void *handler_ctx)
+		      const TagHandler &handler, void *handler_ctx) noexcept
 {
 	const auto duration = audiofile_get_duration(is);
 	if (duration.IsNegative())

src/decoder/plugins/DsdiffDecoderPlugin.cxx

@@ -451,7 +451,7 @@ dsdiff_stream_decode(DecoderClient &client, InputStream &is)
 static bool
 dsdiff_scan_stream(InputStream &is,
 		   gcc_unused const TagHandler &handler,
-		   gcc_unused void *handler_ctx)
+		   gcc_unused void *handler_ctx) noexcept
 {
 	DsdiffMetaData metadata;
 	DsdiffChunkHeader chunk_header;

src/decoder/plugins/DsfDecoderPlugin.cxx

@@ -327,7 +327,7 @@ dsf_stream_decode(DecoderClient &client, InputStream &is)
 static bool
 dsf_scan_stream(InputStream &is,
 		gcc_unused const TagHandler &handler,
-		gcc_unused void *handler_ctx)
+		gcc_unused void *handler_ctx) noexcept
 {
 	/* check DSF metadata */
 	DsfMetaData metadata;

src/decoder/plugins/FaadDecoderPlugin.cxx

@@ -415,7 +415,7 @@ faad_stream_decode(DecoderClient &client, InputStream &is)
 
 static bool
 faad_scan_stream(InputStream &is,
-		 const TagHandler &handler, void *handler_ctx)
+		 const TagHandler &handler, void *handler_ctx) noexcept
 {
 	auto result = faad_get_file_time(is);
 	if (!result.first)

src/decoder/plugins/FfmpegDecoderPlugin.cxx

@@ -103,7 +103,7 @@ ffmpeg_init(const ConfigBlock &block)
 }
 
 static void
-ffmpeg_finish()
+ffmpeg_finish() noexcept
 {
 	av_dict_free(&avformat_options);
 }
@@ -856,7 +856,7 @@ FfmpegScanStream(AVFormatContext &format_context,
 
 static bool
 ffmpeg_scan_stream(InputStream &is,
-		   const TagHandler &handler, void *handler_ctx)
+		   const TagHandler &handler, void *handler_ctx) noexcept
 {
 	AVInputFormat *input_format = ffmpeg_probe(nullptr, is);
 	if (input_format == nullptr)

src/decoder/plugins/FlacDecoderPlugin.cxx

@@ -70,7 +70,7 @@ flac_write_cb(const FLAC__StreamDecoder *dec, const FLAC__Frame *frame,
 
 static bool
 flac_scan_file(Path path_fs,
-	       const TagHandler &handler, void *handler_ctx)
+	       const TagHandler &handler, void *handler_ctx) noexcept
 {
 	FlacMetadataChain chain;
 	if (!chain.Read(NarrowPath(path_fs))) {
@@ -86,7 +86,7 @@ flac_scan_file(Path path_fs,
 
 static bool
 flac_scan_stream(InputStream &is,
-		 const TagHandler &handler, void *handler_ctx)
+		 const TagHandler &handler, void *handler_ctx) noexcept
 {
 	FlacMetadataChain chain;
 	if (!chain.Read(is)) {
@@ -290,7 +290,7 @@ oggflac_init(gcc_unused const ConfigBlock &block)
 
 static bool
 oggflac_scan_file(Path path_fs,
-		  const TagHandler &handler, void *handler_ctx)
+		  const TagHandler &handler, void *handler_ctx) noexcept
 {
 	FlacMetadataChain chain;
 	if (!chain.ReadOgg(NarrowPath(path_fs))) {
@@ -306,7 +306,7 @@ oggflac_scan_file(Path path_fs,
 
 static bool
 oggflac_scan_stream(InputStream &is,
-		    const TagHandler &handler, void *handler_ctx)
+		    const TagHandler &handler, void *handler_ctx) noexcept
 {
 	FlacMetadataChain chain;
 	if (!chain.ReadOgg(is)) {

src/decoder/plugins/FluidsynthDecoderPlugin.cxx

@@ -194,7 +194,7 @@ fluidsynth_file_decode(DecoderClient &client, Path path_fs)
 static bool
 fluidsynth_scan_file(Path path_fs,
 		     gcc_unused const TagHandler &handler,
-		     gcc_unused void *handler_ctx)
+		     gcc_unused void *handler_ctx) noexcept
 {
 	return fluid_is_midifile(path_fs.c_str());
 }

src/decoder/plugins/GmeDecoderPlugin.cxx

@@ -282,7 +282,7 @@ ScanMusicEmu(Music_Emu *emu, unsigned song_num,
 
 static bool
 gme_scan_file(Path path_fs,
-	      const TagHandler &handler, void *handler_ctx)
+	      const TagHandler &handler, void *handler_ctx) noexcept
 {
 	const auto container = ParseContainerPath(path_fs);
 

src/decoder/plugins/MadDecoderPlugin.cxx

@@ -1063,7 +1063,7 @@ mp3_decode(DecoderClient &client, InputStream &input_stream)
 
 static bool
 mad_decoder_scan_stream(InputStream &is,
-			const TagHandler &handler, void *handler_ctx)
+			const TagHandler &handler, void *handler_ctx) noexcept
 {
 	const auto result = mad_decoder_total_file_time(is);
 	if (!result.first)

src/decoder/plugins/MikmodDecoderPlugin.cxx

@@ -141,7 +141,7 @@ mikmod_decoder_init(const ConfigBlock &block)
 }
 
 static void
-mikmod_decoder_finish(void)
+mikmod_decoder_finish() noexcept
 {
 	MikMod_Exit();
 }
@@ -186,7 +186,7 @@ mikmod_decoder_file_decode(DecoderClient &client, Path path_fs)
 
 static bool
 mikmod_decoder_scan_file(Path path_fs,
-			 const TagHandler &handler, void *handler_ctx)
+			 const TagHandler &handler, void *handler_ctx) noexcept
 {
 	/* deconstify the path because libmikmod wants a non-const
 	   string pointer */

src/decoder/plugins/ModplugDecoderPlugin.cxx

@@ -176,7 +176,7 @@ mod_decode(DecoderClient &client, InputStream &is)
 
 static bool
 modplug_scan_stream(InputStream &is,
-		    const TagHandler &handler, void *handler_ctx)
+		    const TagHandler &handler, void *handler_ctx) noexcept
 {
 	ModPlugFile *f = LoadModPlugFile(nullptr, is);
 	if (f == nullptr)

src/decoder/plugins/MpcdecDecoderPlugin.cxx

@@ -258,7 +258,7 @@ mpcdec_get_file_duration(InputStream &is)
 
 static bool
 mpcdec_scan_stream(InputStream &is,
-		   const TagHandler &handler, void *handler_ctx)
+		   const TagHandler &handler, void *handler_ctx) noexcept
 {
 	const auto duration = mpcdec_get_file_duration(is);
 	if (duration.IsNegative())

src/decoder/plugins/Mpg123DecoderPlugin.cxx

@@ -45,7 +45,7 @@ mpd_mpg123_init(gcc_unused const ConfigBlock &block)
 }
 
 static void
-mpd_mpg123_finish(void)
+mpd_mpg123_finish() noexcept
 {
 	mpg123_exit();
 }
@@ -280,7 +280,7 @@ mpd_mpg123_file_decode(DecoderClient &client, Path path_fs)
 
 static bool
 mpd_mpg123_scan_file(Path path_fs,
-		     const TagHandler &handler, void *handler_ctx)
+		     const TagHandler &handler, void *handler_ctx) noexcept
 {
 	int error;
 	mpg123_handle *const handle = mpg123_new(nullptr, &error);

src/decoder/plugins/OpusDecoderPlugin.cxx

@@ -341,7 +341,7 @@ VisitOpusDuration(InputStream &is, OggSyncState &sync, OggStreamState &stream,
 
 static bool
 mpd_opus_scan_stream(InputStream &is,
-		     const TagHandler &handler, void *handler_ctx)
+		     const TagHandler &handler, void *handler_ctx) noexcept
 {
 	InputStreamReader reader(is);
 	OggSyncState oy(reader);

src/decoder/plugins/SndfileDecoderPlugin.cxx

@@ -262,7 +262,7 @@ static constexpr struct {
 
 static bool
 sndfile_scan_stream(InputStream &is,
-		    const TagHandler &handler, void *handler_ctx)
+		    const TagHandler &handler, void *handler_ctx) noexcept
 {
 	SF_INFO info;
 

src/decoder/plugins/VorbisDecoderPlugin.cxx

@@ -363,7 +363,7 @@ VisitVorbisDuration(InputStream &is,
 
 static bool
 vorbis_scan_stream(InputStream &is,
-		   const TagHandler &handler, void *handler_ctx)
+		   const TagHandler &handler, void *handler_ctx) noexcept
 {
 	/* initialize libogg */
 

src/decoder/plugins/WavpackDecoderPlugin.cxx

@@ -579,7 +579,7 @@ wavpack_filedecode(DecoderClient &client, Path path_fs)
  */
 static bool
 wavpack_scan_file(Path path_fs,
-		  const TagHandler &handler, void *handler_ctx)
+		  const TagHandler &handler, void *handler_ctx) noexcept
 {
 	auto *wpc = WavpackOpenInput(path_fs, OPEN_DSD_FLAG, 0);
 	AtScopeExit(wpc) {
@@ -595,7 +595,7 @@ wavpack_scan_file(Path path_fs,
 
 static bool
 wavpack_scan_stream(InputStream &is,
-		    const TagHandler &handler, void *handler_ctx)
+		    const TagHandler &handler, void *handler_ctx) noexcept
 {
 	WavpackInput isp(nullptr, is);
 	auto *wpc = WavpackOpenInput(&mpd_is_reader, &isp, nullptr,

src/decoder/plugins/WildmidiDecoderPlugin.cxx

@@ -54,7 +54,7 @@ wildmidi_init(const ConfigBlock &block)
 }
 
 static void
-wildmidi_finish(void)
+wildmidi_finish() noexcept
 {
 	WildMidi_Shutdown();
 }
@@ -127,7 +127,7 @@ wildmidi_file_decode(DecoderClient &client, Path path_fs)
 
 static bool
 wildmidi_scan_file(Path path_fs,
-		   const TagHandler &handler, void *handler_ctx)
+		   const TagHandler &handler, void *handler_ctx) noexcept
 {
 	midi *wm = WildMidi_Open(path_fs.c_str());
 	if (wm == nullptr)