decoder/flac: don't use float to calculate song duration

src/decoder/_flac_common.h

@@ -159,6 +159,13 @@ struct flac_data {
 	struct tag *tag;
 };
 
+static inline unsigned
+flac_duration(const FLAC__StreamMetadata_StreamInfo *stream_info)
+{
+	return (stream_info->total_samples + stream_info->sample_rate - 1) /
+		stream_info->sample_rate;
+}
+
 /* initializes a given FlacData struct */
 void
 flac_data_init(struct flac_data *data, struct decoder * decoder,

src/decoder/flac_plugin.c

@@ -272,8 +272,7 @@ flac_tag_load(const char *file, const char *char_tnum)
 			flac_vorbis_comments_to_tag(tag, char_tnum,
 						    &block->data.vorbis_comment);
 		} else if (block->type == FLAC__METADATA_TYPE_STREAMINFO) {
-			tag->time = ((float)block->data.stream_info.total_samples) /
-			    block->data.stream_info.sample_rate + 0.5;
+			tag->time = flac_duration(&block->data.stream_info);
 		}
 		FLAC__metadata_object_delete(block);
 	} while (FLAC__metadata_simple_iterator_next(it));
@@ -853,9 +852,7 @@ oggflac_tag_dup(const char *file)
 			flac_vorbis_comments_to_tag(ret, NULL,
 						    &block->data.vorbis_comment);
 		} else if (block->type == FLAC__METADATA_TYPE_STREAMINFO) {
-			ret->time = ((float)block->data.stream_info.
-				     total_samples) /
-			    block->data.stream_info.sample_rate + 0.5;
+			ret->time = flac_duration(&block->data.stream_info);
 		}
 	} while (FLAC__metadata_iterator_next(it));
 	FLAC__metadata_iterator_delete(it);

src/decoder/oggflac_plugin.c

@@ -172,9 +172,7 @@ static void of_metadata_dup_cb(G_GNUC_UNUSED const OggFLAC__SeekableStreamDecode
 
 	switch (block->type) {
 	case FLAC__METADATA_TYPE_STREAMINFO:
-		data->tag->time = ((float)block->data.stream_info.
-				   total_samples) /
-		    block->data.stream_info.sample_rate + 0.5;
+		data->tag->time = flac_duration(&block->data.stream_info);
 		return;
 	case FLAC__METADATA_TYPE_VORBIS_COMMENT:
 		flac_vorbis_comments_to_tag(data->tag, NULL,