decoder/Client: use std::chrono::duration<double> instead of raw `double`

src/decoder/Bridge.cxx

@@ -290,7 +290,7 @@ DecoderBridge::CommandFinished()
 		assert(dc.pipe->IsEmpty());
 
 		initial_seek_running = false;
-		timestamp = dc.start_time.ToDoubleS();
+		timestamp = std::chrono::duration_cast<FloatDuration>(dc.start_time);
 		absolute_frame = dc.start_time.ToScale<uint64_t>(dc.in_audio_format.sample_rate);
 		return;
 	}
@@ -307,7 +307,7 @@ DecoderBridge::CommandFinished()
 		if (convert != nullptr)
 			convert->Reset();
 
-		timestamp = dc.seek_time.ToDoubleS();
+		timestamp = std::chrono::duration_cast<FloatDuration>(dc.seek_time);
 		absolute_frame = dc.seek_time.ToScale<uint64_t>(dc.in_audio_format.sample_rate);
 	}
 
@@ -413,12 +413,12 @@ try {
 }
 
 void
-DecoderBridge::SubmitTimestamp(double t)
+DecoderBridge::SubmitTimestamp(FloatDuration t)
 {
-	assert(t >= 0);
+	assert(t.count() >= 0);
 
 	timestamp = t;
-	absolute_frame = uint64_t(t * dc.in_audio_format.sample_rate);
+	absolute_frame = uint64_t(t.count() * dc.in_audio_format.sample_rate);
 }
 
 DecoderCommand
@@ -506,7 +506,7 @@ DecoderBridge::SubmitData(InputStream *is,
 
 		const auto dest =
 			chunk->Write(dc.out_audio_format,
-				     SongTime::FromS(timestamp) -
+				     SongTime::Cast(timestamp) -
 				     dc.song->GetStartTime(),
 				     kbit_rate);
 		if (dest.empty()) {
@@ -532,8 +532,8 @@ DecoderBridge::SubmitData(InputStream *is,
 		data = (const uint8_t *)data + nbytes;
 		length -= nbytes;
 
-		timestamp += (double)nbytes /
-			dc.out_audio_format.GetTimeToSize();
+		timestamp += FloatDuration((double)nbytes /
+					   dc.out_audio_format.GetTimeToSize());
 	}
 
 	absolute_frame += data_frames;

src/decoder/Bridge.hxx

@@ -49,7 +49,7 @@ public:
 	/**
 	 * The time stamp of the next data chunk, in seconds.
 	 */
-	double timestamp = 0;
+	FloatDuration timestamp = FloatDuration::zero();
 
 	/**
 	 * The time stamp of the next data chunk, in PCM frames.
@@ -148,7 +148,7 @@ public:
 	void SeekError() override;
 	InputStreamPtr OpenUri(const char *uri) override;
 	size_t Read(InputStream &is, void *buffer, size_t length) override;
-	void SubmitTimestamp(double t) override;
+	void SubmitTimestamp(FloatDuration t) override;
 	DecoderCommand SubmitData(InputStream *is,
 				  const void *data, size_t length,
 				  uint16_t kbit_rate) override;

src/decoder/Client.hxx

@@ -115,7 +115,7 @@ public:
 	 * use this function if it thinks that adding to the time stamp based
 	 * on the buffer size won't work.
 	 */
-	virtual void SubmitTimestamp(double t) = 0;
+	virtual void SubmitTimestamp(FloatDuration t) = 0;
 
 	/**
 	 * This function is called by the decoder plugin when it has

src/decoder/plugins/Mpg123DecoderPlugin.cxx

@@ -264,7 +264,8 @@ mpd_mpg123_file_decode(DecoderClient &client, Path path_fs)
 				client.SeekError();
 			else {
 				client.CommandFinished();
-				client.SubmitTimestamp(c / (double)audio_format.sample_rate);
+				client.SubmitTimestamp(FloatDuration(c)
+						       / audio_format.sample_rate);
 			}
 
 			cmd = DecoderCommand::NONE;

src/decoder/plugins/OpusDecoderPlugin.cxx

@@ -243,7 +243,7 @@ MPDOpusDecoder::HandleAudio(const ogg_packet &packet)
 			throw cmd;
 
 		if (packet.granulepos > 0)
-			client.SubmitTimestamp(double(packet.granulepos)
+			client.SubmitTimestamp(FloatDuration(packet.granulepos)
 					       / opus_sample_rate);
 	}
 }

src/decoder/plugins/SidplayDecoderPlugin.cxx

@@ -403,7 +403,7 @@ sidplay_file_decode(DecoderClient &client, Path path_fs)
 		const size_t nbytes = result;
 #endif
 
-		client.SubmitTimestamp((double)player.time() / timebase);
+		client.SubmitTimestamp(FloatDuration(player.time()) / timebase);
 
 		cmd = client.SubmitData(nullptr, buffer, nbytes, 0);
 

src/decoder/plugins/VorbisDecoderPlugin.cxx

@@ -298,7 +298,7 @@ VorbisDecoder::OnOggPacket(const ogg_packet &_packet)
 
 #ifndef HAVE_TREMOR
 		if (packet.granulepos > 0)
-			client.SubmitTimestamp(vorbis_granule_time(&dsp, packet.granulepos));
+			client.SubmitTimestamp(FloatDuration(vorbis_granule_time(&dsp, packet.granulepos)));
 #endif
 	}
 }

src/lib/ffmpeg/Time.hxx

@@ -40,13 +40,13 @@ extern "C" {
  * Convert a FFmpeg time stamp to a floating point value (in seconds).
  */
 gcc_const
-static inline double
+static inline FloatDuration
 FfmpegTimeToDouble(int64_t t, const AVRational time_base) noexcept
 {
 	assert(t != (int64_t)AV_NOPTS_VALUE);
 
-	return (double)av_rescale_q(t, time_base, (AVRational){1, 1024})
-		/ (double)1024;
+	return FloatDuration(av_rescale_q(t, time_base, (AVRational){1, 1024}))
+		/ 1024;
 }
 
 /**

test/DumpDecoderClient.cxx

@@ -87,7 +87,7 @@ DumpDecoderClient::Read(InputStream &is, void *buffer, size_t length)
 }
 
 void
-DumpDecoderClient::SubmitTimestamp(gcc_unused double t)
+DumpDecoderClient::SubmitTimestamp(gcc_unused FloatDuration t)
 {
 }
 

test/DumpDecoderClient.hxx

@@ -50,7 +50,7 @@ public:
 	void SeekError() override;
 	InputStreamPtr OpenUri(const char *uri) override;
 	size_t Read(InputStream &is, void *buffer, size_t length) override;
-	void SubmitTimestamp(double t) override;
+	void SubmitTimestamp(FloatDuration t) override;
 	DecoderCommand SubmitData(InputStream *is,
 				  const void *data, size_t length,
 				  uint16_t kbit_rate) override;