MusicChunk: use SignedSongTime for the time stamp

src/MusicChunk.cxx

@@ -41,17 +41,17 @@ MusicChunk::CheckFormat(const AudioFormat other_format) const
 
 WritableBuffer<void>
 MusicChunk::Write(const AudioFormat af,
-		  float data_time, uint16_t _bit_rate)
+		  SongTime data_time, uint16_t _bit_rate)
 {
 	assert(CheckFormat(af));
 	assert(length == 0 || audio_format.IsValid());
 
 	if (length == 0) {
 		/* if the chunk is empty, nobody has set bitRate and
-		   times yet */
+		   time yet */
 
 		bit_rate = _bit_rate;
-		times = data_time;
+		time = data_time;
 	}
 
 	const size_t frame_size = af.GetFrameSize();

src/MusicChunk.hxx

@@ -20,6 +20,7 @@
 #ifndef MPD_MUSIC_CHUNK_HXX
 #define MPD_MUSIC_CHUNK_HXX
 
+#include "Chrono.hxx"
 #include "ReplayGainInfo.hxx"
 #include "util/WritableBuffer.hxx"
 
@@ -62,7 +63,7 @@ struct MusicChunk {
 	uint16_t bit_rate;
 
 	/** the time stamp within the song */
-	float times;
+	SignedSongTime time;
 
 	/**
 	 * An optional tag associated with this chunk (and the
@@ -128,7 +129,8 @@ struct MusicChunk {
 	 * @return a writable buffer, or nullptr if the chunk is full
 	 */
 	WritableBuffer<void> Write(AudioFormat af,
-				   float data_time, uint16_t bit_rate);
+				   SongTime data_time,
+				   uint16_t bit_rate);
 
 	/**
 	 * Increases the length of the chunk after the caller has written to

src/PlayerThread.cxx

@@ -499,7 +499,7 @@ Player::SendSilence()
 	   partial frames */
 	unsigned num_frames = sizeof(chunk->data) / frame_size;
 
-	chunk->times = -1.0; /* undefined time stamp */
+	chunk->time = SignedSongTime::Negative(); /* undefined time stamp */
 	chunk->length = num_frames * frame_size;
 	memset(chunk->data, 0, chunk->length);
 

src/decoder/DecoderAPI.cxx

@@ -512,8 +512,8 @@ decoder_data(Decoder &decoder,
 
 		const auto dest =
 			chunk->Write(dc.out_audio_format,
-				     decoder.timestamp -
-				     dc.song->GetStartTime().ToDoubleS(),
+				     SongTime::FromS(decoder.timestamp) -
+				     dc.song->GetStartTime(),
 				     kbit_rate);
 		if (dest.IsNull()) {
 			/* the chunk is full, flush it */

src/output/MultipleOutputs.cxx

@@ -341,10 +341,10 @@ MultipleOutputs::Check()
 			   this chunk */
 			return pipe->GetSize();
 
-		if (chunk->length > 0 && chunk->times >= 0.0)
+		if (chunk->length > 0 && !chunk->time.IsNegative())
 			/* only update elapsed_time if the chunk
 			   provides a defined value */
-			elapsed_time = SignedSongTime::FromS(chunk->times);
+			elapsed_time = chunk->time;
 
 		is_tail = chunk->next == nullptr;
 		if (is_tail)