TagHandler: pass SongTime to duration()

src/decoder/plugins/AdPlugDecoderPlugin.cxx

@@ -102,7 +102,7 @@ adplug_scan_file(Path path_fs,
 		return false;
 
 	tag_handler_invoke_duration(handler, handler_ctx,
-				    player->songlength() / 1000);
+				    SongTime::FromMS(player->songlength()));
 
 	if (handler->tag != nullptr) {
 		adplug_scan_tag(TAG_TITLE, player->gettitle(),

src/decoder/plugins/AudiofileDecoderPlugin.cxx

@@ -244,19 +244,19 @@ audiofile_stream_decode(Decoder &decoder, InputStream &is)
 }
 
 gcc_pure
-static int
+static SignedSongTime
 audiofile_get_duration(InputStream &is)
 {
 	if (!is.IsSeekable() || !is.KnownSize())
-		return -1;
+		return SignedSongTime::Negative();
 
 	AudioFileInputStream afis{nullptr, is};
 	AFvirtualfile *vf = setup_virtual_fops(afis);
 	AFfilehandle fh = afOpenVirtualFile(vf, "r", nullptr);
 	if (fh == AF_NULL_FILEHANDLE)
-		return -1;
+		return SignedSongTime::Negative();
 
-	int duration = audiofile_get_duration(fh).RoundS();
+	const auto duration = audiofile_get_duration(fh);
 	afCloseFile(fh);
 	return duration;
 }
@@ -265,11 +265,11 @@ static bool
 audiofile_scan_stream(InputStream &is,
 		      const struct tag_handler *handler, void *handler_ctx)
 {
-	int total_time = audiofile_get_duration(is);
-	if (total_time < 0)
+	const auto duration = audiofile_get_duration(is);
+	if (duration.IsNegative())
 		return false;
 
-	tag_handler_invoke_duration(handler, handler_ctx, total_time);
+	tag_handler_invoke_duration(handler, handler_ctx, SongTime(duration));
 	return true;
 }
 

src/decoder/plugins/DsdiffDecoderPlugin.cxx

@@ -474,8 +474,9 @@ dsdiff_scan_stream(InputStream &is,
 		return false;
 
 	/* calculate song time and add as tag */
-	unsigned songtime = ((metadata.chunk_size / metadata.channels) * 8) /
-			    metadata.sample_rate;
+	uint64_t n_frames = metadata.chunk_size / audio_format.channels;
+	auto songtime = SongTime::FromScale<uint64_t>(n_frames,
+						      audio_format.sample_rate);
 	tag_handler_invoke_duration(handler, handler_ctx, songtime);
 
 	/* Read additional metadata and created tags if available */

src/decoder/plugins/DsfDecoderPlugin.cxx

@@ -42,7 +42,6 @@
 #include <string.h>
 
 static constexpr unsigned DSF_BLOCK_SIZE = 4096;
-static constexpr unsigned DSF_BLOCK_BITS = DSF_BLOCK_SIZE * 8;
 
 struct DsfMetaData {
 	unsigned sample_rate, channels;
@@ -348,8 +347,9 @@ dsf_scan_stream(InputStream &is,
 		return false;
 
 	/* calculate song time and add as tag */
-	unsigned songtime = (metadata.n_blocks * DSF_BLOCK_BITS) /
-		metadata.sample_rate;
+	const auto n_blocks = metadata.n_blocks;
+	auto songtime = SongTime::FromScale<uint64_t>(n_blocks * DSF_BLOCK_SIZE,
+						      audio_format.sample_rate);
 	tag_handler_invoke_duration(handler, handler_ctx, songtime);
 
 #ifdef HAVE_ID3TAG

src/decoder/plugins/FaadDecoderPlugin.cxx

@@ -438,11 +438,9 @@ faad_scan_stream(InputStream &is,
 	if (!result.first)
 		return false;
 
-	unsigned duration = result.second.IsNegative()
-		? 0
-		: result.second.RoundS();
-
-	tag_handler_invoke_duration(handler, handler_ctx, duration);
+	if (!result.second.IsNegative())
+		tag_handler_invoke_duration(handler, handler_ctx,
+					    SongTime(result.second));
 	return true;
 }
 

src/decoder/plugins/FfmpegDecoderPlugin.cxx

@@ -609,9 +609,12 @@ ffmpeg_scan_stream(InputStream &is,
 		return false;
 	}
 
-	if (f->duration != (int64_t)AV_NOPTS_VALUE)
-		tag_handler_invoke_duration(handler, handler_ctx,
-					    f->duration / AV_TIME_BASE);
+	if (f->duration != (int64_t)AV_NOPTS_VALUE) {
+		const auto duration =
+			SongTime::FromScale<uint64_t>(f->duration,
+						      AV_TIME_BASE);
+		tag_handler_invoke_duration(handler, handler_ctx, duration);
+	}
 
 	ffmpeg_scan_dictionary(f->metadata, handler, handler_ctx);
 	int idx = ffmpeg_find_audio_stream(f);

src/decoder/plugins/FlacMetadata.cxx

@@ -179,6 +179,16 @@ flac_scan_comments(const FLAC__StreamMetadata_VorbisComment *comment,
 				  handler, handler_ctx);
 }
 
+gcc_pure
+static inline SongTime
+flac_duration(const FLAC__StreamMetadata_StreamInfo *stream_info)
+{
+	assert(stream_info->sample_rate > 0);
+
+	return SongTime::FromScale<uint64_t>(stream_info->total_samples,
+					     stream_info->sample_rate);
+}
+
 void
 flac_scan_metadata(const FLAC__StreamMetadata *block,
 		   const struct tag_handler *handler, void *handler_ctx)

src/decoder/plugins/FlacMetadata.hxx

@@ -114,15 +114,6 @@ public:
 struct Tag;
 struct ReplayGainInfo;
 
-static inline unsigned
-flac_duration(const FLAC__StreamMetadata_StreamInfo *stream_info)
-{
-	assert(stream_info->sample_rate > 0);
-
-	return (stream_info->total_samples + stream_info->sample_rate - 1) /
-		stream_info->sample_rate;
-}
-
 bool
 flac_parse_replay_gain(ReplayGainInfo &rgi,
 		       const FLAC__StreamMetadata *block);

src/decoder/plugins/GmeDecoderPlugin.cxx

@@ -238,7 +238,7 @@ gme_scan_file(Path path_fs,
 
 	if (ti->length > 0)
 		tag_handler_invoke_duration(handler, handler_ctx,
-					    ti->length / 100);
+					    SongTime::FromMS(ti->length));
 
 	if (ti->song != nullptr) {
 		if (gme_track_count(emu) > 1) {

src/decoder/plugins/MadDecoderPlugin.cxx

@@ -1094,11 +1094,9 @@ mad_decoder_scan_stream(InputStream &is,
 	if (!result.first)
 		return false;
 
-	unsigned duration = result.second.IsNegative()
-		? 0
-		: result.second.RoundS();
-
-	tag_handler_invoke_duration(handler, handler_ctx, duration);
+	if (!result.second.IsNegative())
+		tag_handler_invoke_duration(handler, handler_ctx,
+					    SongTime(result.second));
 	return true;
 }
 

src/decoder/plugins/ModplugDecoderPlugin.cxx

@@ -184,7 +184,7 @@ modplug_scan_stream(InputStream &is,
 		return false;
 
 	tag_handler_invoke_duration(handler, handler_ctx,
-				    ModPlug_GetLength(f) / 1000);
+				    SongTime::FromMS(ModPlug_GetLength(f)));
 
 	const char *title = ModPlug_GetName(f);
 	if (title != nullptr)

src/decoder/plugins/Mp4v2DecoderPlugin.cxx

@@ -256,8 +256,10 @@ mp4_scan_file(Path path_fs,
 		return false;
 	}
 
-	const MP4Duration dur = MP4GetTrackDuration(handle, id) /
-		MP4GetTrackTimeScale(handle, id);
+	const MP4Timestamp scale = MP4GetTrackTimeScale(handle, id);
+	const SongTime dur =
+		SongTime::FromScale<uint64_t>(MP4GetTrackDuration(handle, id),
+					      scale);
 	tag_handler_invoke_duration(handler, handler_ctx, dur);
 
 	const MP4Tags* tags = MP4TagsAlloc();

src/decoder/plugins/MpcdecDecoderPlugin.cxx

@@ -228,7 +228,7 @@ mpcdec_decode(Decoder &mpd_decoder, InputStream &is)
 	mpc_demux_exit(demux);
 }
 
-static float
+static SignedSongTime
 mpcdec_get_file_duration(InputStream &is)
 {
 	mpc_decoder_data data(is, nullptr);
@@ -243,25 +243,24 @@ mpcdec_get_file_duration(InputStream &is)
 
 	mpc_demux *demux = mpc_demux_init(&reader);
 	if (demux == nullptr)
-		return -1;
+		return SignedSongTime::Negative();
 
 	mpc_streaminfo info;
 	mpc_demux_get_info(demux, &info);
 	mpc_demux_exit(demux);
 
-	return mpc_streaminfo_get_length(&info);
+	return SongTime::FromS(mpc_streaminfo_get_length(&info));
 }
 
 static bool
 mpcdec_scan_stream(InputStream &is,
 		   const struct tag_handler *handler, void *handler_ctx)
 {
-	float total_time = mpcdec_get_file_duration(is);
-
-	if (total_time < 0)
+	const auto duration = mpcdec_get_file_duration(is);
+	if (duration.IsNegative())
 		return false;
 
-	tag_handler_invoke_duration(handler, handler_ctx, total_time);
+	tag_handler_invoke_duration(handler, handler_ctx, SongTime(duration));
 	return true;
 }
 

src/decoder/plugins/Mpg123DecoderPlugin.cxx

@@ -233,8 +233,11 @@ mpd_mpg123_scan_file(Path path_fs,
 
 	mpg123_delete(handle);
 
-	tag_handler_invoke_duration(handler, handler_ctx,
-				    num_samples / audio_format.sample_rate);
+	const auto duration =
+		SongTime::FromScale<uint64_t>(num_samples,
+					      audio_format.sample_rate);
+
+	tag_handler_invoke_duration(handler, handler_ctx, duration);
 	return true;
 }
 

src/decoder/plugins/OpusDecoderPlugin.cxx

@@ -441,9 +441,12 @@ mpd_opus_scan_stream(InputStream &is,
 		}
 	}
 
-	if (packet.e_o_s || OggSeekFindEOS(oy, os, packet, is))
-		tag_handler_invoke_duration(handler, handler_ctx,
-					    packet.granulepos / opus_sample_rate);
+	if (packet.e_o_s || OggSeekFindEOS(oy, os, packet, is)) {
+		const auto duration =
+			SongTime::FromScale<uint64_t>(packet.granulepos,
+						      opus_sample_rate);
+		tag_handler_invoke_duration(handler, handler_ctx, duration);
+	}
 
 	ogg_stream_clear(&os);
 

src/decoder/plugins/SidplayDecoderPlugin.cxx

@@ -388,7 +388,7 @@ sidplay_scan_file(Path path_fs,
 	const auto duration = get_song_length(path_fs);
 	if (!duration.IsNegative())
 		tag_handler_invoke_duration(handler, handler_ctx,
-					    duration.RoundS());
+					    SongTime(duration));
 
 	return true;
 }

src/decoder/plugins/SndfileDecoderPlugin.cxx

@@ -246,8 +246,9 @@ sndfile_scan_stream(InputStream &is,
 		return false;
 	}
 
-	tag_handler_invoke_duration(handler, handler_ctx,
-				    info.frames / info.samplerate);
+	const auto duration =
+		SongTime::FromScale<uint64_t>(info.frames, info.samplerate);
+	tag_handler_invoke_duration(handler, handler_ctx, duration);
 
 	for (auto i : sndfile_tags)
 		sndfile_handle_tag(sf, i.str, i.tag, handler, handler_ctx);

src/decoder/plugins/VorbisDecoderPlugin.cxx

@@ -347,8 +347,10 @@ vorbis_scan_stream(InputStream &is,
 	if (!vorbis_is_open(&vis, &vf))
 		return false;
 
+	const auto total = ov_time_total(&vf, -1);
+	if (total >= 0)
 		tag_handler_invoke_duration(handler, handler_ctx,
-				    (int)(ov_time_total(&vf, -1) + 0.5));
+					    SongTime::FromS(total));
 
 	vorbis_comments_scan(ov_comment(&vf, -1)->user_comments,
 			     handler, handler_ctx);

src/decoder/plugins/WavpackDecoderPlugin.cxx

@@ -283,9 +283,10 @@ wavpack_scan_file(Path path_fs,
 		return false;
 	}
 
-	tag_handler_invoke_duration(handler, handler_ctx,
-				    WavpackGetNumSamples(wpc) /
+	const auto duration =
+		SongTime::FromScale<uint64_t>(WavpackGetNumSamples(wpc),
 					      WavpackGetSampleRate(wpc));
+	tag_handler_invoke_duration(handler, handler_ctx, duration);
 
 	/* the WavPack format implies APEv2 tags, which means we can
 	   reuse the mapping from tag_ape.c */

src/decoder/plugins/WildmidiDecoderPlugin.cxx

@@ -135,7 +135,9 @@ wildmidi_scan_file(Path path_fs,
 		return false;
 	}
 
-	int duration = info->approx_total_samples / WILDMIDI_SAMPLE_RATE;
+	const auto duration =
+		SongTime::FromScale<uint64_t>(info->approx_total_samples,
+					      WILDMIDI_SAMPLE_RATE);
 	tag_handler_invoke_duration(handler, handler_ctx, duration);
 
 	WildMidi_Close(wm);

src/tag/TagHandler.cxx

@@ -23,11 +23,11 @@
 #include "util/ASCII.hxx"
 
 static void
-add_tag_duration(unsigned seconds, void *ctx)
+add_tag_duration(SongTime duration, void *ctx)
 {
 	TagBuilder &tag = *(TagBuilder *)ctx;
 
-	tag.SetDuration(SignedSongTime::FromS(seconds));
+	tag.SetDuration(duration);
 }
 
 static void

src/tag/TagHandler.hxx

@@ -22,6 +22,7 @@
 
 #include "check.h"
 #include "TagType.h"
+#include "Chrono.hxx"
 
 #include <assert.h>
 
@@ -30,11 +31,11 @@
  */
 struct tag_handler {
 	/**
-	 * Declare the duration of a song, in seconds.  Do not call
+	 * Declare the duration of a song.  Do not call
 	 * this when the duration could not be determined, because
 	 * there is no magic value for "unknown duration".
 	 */
-	void (*duration)(unsigned seconds, void *ctx);
+	void (*duration)(SongTime duration, void *ctx);
 
 	/**
 	 * A tag has been read.
@@ -53,12 +54,12 @@ struct tag_handler {
 
 static inline void
 tag_handler_invoke_duration(const struct tag_handler *handler, void *ctx,
-			  unsigned seconds)
+			    SongTime duration)
 {
 	assert(handler != nullptr);
 
 	if (handler->duration != nullptr)
-		handler->duration(seconds, ctx);
+		handler->duration(duration, ctx);
 }
 
 static inline void

test/read_tags.cxx

@@ -48,9 +48,9 @@
 static bool empty = true;
 
 static void
-print_duration(unsigned seconds, gcc_unused void *ctx)
+print_duration(SongTime duration, gcc_unused void *ctx)
 {
-	printf("duration=%d\n", seconds);
+	printf("duration=%f\n", duration.ToDoubleS());
 }
 
 static void