Playlist: use std::chrono::duration for Seek*()

src/Partition.hxx

@@ -25,6 +25,7 @@
 #include "mixer/Listener.hxx"
 #include "PlayerControl.hxx"
 #include "PlayerListener.hxx"
+#include "Chrono.hxx"
 
 struct Instance;
 class MultipleOutputs;
@@ -141,15 +142,15 @@ struct Partition final : private PlayerListener, private MixerListener {
 	}
 
 	PlaylistResult SeekSongPosition(unsigned song_position,
-					float seek_time) {
+					SongTime seek_time) {
 		return playlist.SeekSongPosition(pc, song_position, seek_time);
 	}
 
-	PlaylistResult SeekSongId(unsigned song_id, float seek_time) {
+	PlaylistResult SeekSongId(unsigned song_id, SongTime seek_time) {
 		return playlist.SeekSongId(pc, song_id, seek_time);
 	}
 
-	PlaylistResult SeekCurrent(float seek_time, bool relative) {
+	PlaylistResult SeekCurrent(SignedSongTime seek_time, bool relative) {
 		return playlist.SeekCurrent(pc, seek_time, relative);
 	}
 

src/command/PlayerCommands.cxx

@@ -300,11 +300,12 @@ handle_clearerror(gcc_unused Client &client,
 CommandResult
 handle_seek(Client &client, gcc_unused unsigned argc, char *argv[])
 {
-	unsigned song, seek_time;
+	unsigned song;
+	SongTime seek_time;
 
 	if (!check_unsigned(client, &song, argv[1]))
 		return CommandResult::ERROR;
-	if (!check_unsigned(client, &seek_time, argv[2]))
+	if (!ParseCommandArg(client, seek_time, argv[2]))
 		return CommandResult::ERROR;
 
 	PlaylistResult result =
@@ -315,11 +316,12 @@ handle_seek(Client &client, gcc_unused unsigned argc, char *argv[])
 CommandResult
 handle_seekid(Client &client, gcc_unused unsigned argc, char *argv[])
 {
-	unsigned id, seek_time;
+	unsigned id;
+	SongTime seek_time;
 
 	if (!check_unsigned(client, &id, argv[1]))
 		return CommandResult::ERROR;
-	if (!check_unsigned(client, &seek_time, argv[2]))
+	if (!ParseCommandArg(client, seek_time, argv[2]))
 		return CommandResult::ERROR;
 
 	PlaylistResult result =
@@ -332,8 +334,8 @@ handle_seekcur(Client &client, gcc_unused unsigned argc, char *argv[])
 {
 	const char *p = argv[1];
 	bool relative = *p == '+' || *p == '-';
-	int seek_time;
-	if (!check_int(client, &seek_time, p))
+	SignedSongTime seek_time;
+	if (!ParseCommandArg(client, seek_time, p))
 		return CommandResult::ERROR;
 
 	PlaylistResult result =

src/protocol/ArgParser.cxx

@@ -20,6 +20,7 @@
 #include "config.h"
 #include "ArgParser.hxx"
 #include "Result.hxx"
+#include "Chrono.hxx"
 
 #include <limits>
 
@@ -186,3 +187,25 @@ check_float(Client &client, float *value_r, const char *s)
 	*value_r = value;
 	return true;
 }
+
+bool
+ParseCommandArg(Client &client, SongTime &value_r, const char *s)
+{
+	unsigned value;
+	bool success = check_unsigned(client, &value, s);
+	if (success)
+		value_r = SongTime::FromS(value);
+
+	return success;
+}
+
+bool
+ParseCommandArg(Client &client, SignedSongTime &value_r, const char *s)
+{
+	int value;
+	bool success = check_int(client, &value, s);
+	if (success)
+		value_r = SignedSongTime::FromS(value);
+
+	return success;
+}

src/protocol/ArgParser.hxx

@@ -25,6 +25,8 @@
 #include <stdint.h>
 
 class Client;
+class SongTime;
+class SignedSongTime;
 
 bool
 check_uint32(Client &client, uint32_t *dst, const char *s);
@@ -45,4 +47,10 @@ check_bool(Client &client, bool *value_r, const char *s);
 bool
 check_float(Client &client, float *value_r, const char *s);
 
+bool
+ParseCommandArg(Client &client, SongTime &value_r, const char *s);
+
+bool
+ParseCommandArg(Client &client, SignedSongTime &value_r, const char *s);
+
 #endif

src/queue/Playlist.hxx

@@ -29,6 +29,8 @@ class DetachedSong;
 class Database;
 class Error;
 class SongLoader;
+class SongTime;
+class SignedSongTime;
 
 struct playlist {
 	/**
@@ -251,10 +253,10 @@ public:
 
 	PlaylistResult SeekSongPosition(PlayerControl &pc,
 					unsigned song_position,
-					float seek_time);
+					SongTime seek_time);
 
 	PlaylistResult SeekSongId(PlayerControl &pc,
-				  unsigned song_id, float seek_time);
+				  unsigned song_id, SongTime seek_time);
 
 	/**
 	 * Seek within the current song.  Fails if MPD is not currently
@@ -265,7 +267,7 @@ public:
 	 * current position
 	 */
 	PlaylistResult SeekCurrent(PlayerControl &pc,
-				   float seek_time, bool relative);
+				   SignedSongTime seek_time, bool relative);
 
 	bool GetRepeat() const {
 		return queue.repeat;

src/queue/PlaylistControl.cxx

@@ -190,7 +190,8 @@ playlist::PlayPrevious(PlayerControl &pc)
 }
 
 PlaylistResult
-playlist::SeekSongPosition(PlayerControl &pc, unsigned song, float seek_time)
+playlist::SeekSongPosition(PlayerControl &pc,
+			   unsigned song, SongTime seek_time)
 {
 	if (!queue.IsValidPosition(song))
 		return PlaylistResult::BAD_RANGE;
@@ -215,8 +216,7 @@ playlist::SeekSongPosition(PlayerControl &pc, unsigned song, float seek_time)
 		queued_song = nullptr;
 	}
 
-	if (!pc.Seek(new DetachedSong(queue.GetOrder(i)),
-		     SongTime::FromS(seek_time))) {
+	if (!pc.Seek(new DetachedSong(queue.GetOrder(i)), seek_time)) {
 		UpdateQueuedSong(pc, queued_song);
 
 		return PlaylistResult::NOT_PLAYING;
@@ -229,7 +229,7 @@ playlist::SeekSongPosition(PlayerControl &pc, unsigned song, float seek_time)
 }
 
 PlaylistResult
-playlist::SeekSongId(PlayerControl &pc, unsigned id, float seek_time)
+playlist::SeekSongId(PlayerControl &pc, unsigned id, SongTime seek_time)
 {
 	int song = queue.IdToPosition(id);
 	if (song < 0)
@@ -239,7 +239,8 @@ playlist::SeekSongId(PlayerControl &pc, unsigned id, float seek_time)
 }
 
 PlaylistResult
-playlist::SeekCurrent(PlayerControl &pc, float seek_time, bool relative)
+playlist::SeekCurrent(PlayerControl &pc,
+		      SignedSongTime seek_time, bool relative)
 {
 	if (!playing)
 		return PlaylistResult::NOT_PLAYING;
@@ -251,11 +252,10 @@ playlist::SeekCurrent(PlayerControl &pc, float seek_time, bool relative)
 		    status.state != PlayerState::PAUSE)
 			return PlaylistResult::NOT_PLAYING;
 
-		seek_time += (int)status.elapsed_time;
+		seek_time += SignedSongTime::FromS(status.elapsed_time);
+		if (seek_time.IsNegative())
+			seek_time = SignedSongTime::zero();
 	}
 
-	if (seek_time < 0)
-		seek_time = 0;
-
-	return SeekSongPosition(pc, current, seek_time);
+	return SeekSongPosition(pc, current, SongTime(seek_time));
 }

src/queue/PlaylistState.cxx

@@ -132,7 +132,7 @@ playlist_state_restore(const char *line, TextFile &file,
 		       struct playlist &playlist, PlayerControl &pc)
 {
 	int current = -1;
-	int seek_time = 0;
+	SongTime seek_time = SongTime::zero();
 	bool random_mode = false;
 
 	if (!StringStartsWith(line, PLAYLIST_STATE_FILE_STATE))
@@ -150,8 +150,8 @@ playlist_state_restore(const char *line, TextFile &file,
 
 	while ((line = file.ReadLine()) != nullptr) {
 		if (StringStartsWith(line, PLAYLIST_STATE_FILE_TIME)) {
-			seek_time =
-				atoi(&(line[strlen(PLAYLIST_STATE_FILE_TIME)]));
+			unsigned seconds = atoi(&(line[strlen(PLAYLIST_STATE_FILE_TIME)]));
+			seek_time = SongTime::FromS(seconds);
 		} else if (StringStartsWith(line, PLAYLIST_STATE_FILE_REPEAT)) {
 			playlist.SetRepeat(pc,
 					   strcmp(&(line[strlen(PLAYLIST_STATE_FILE_REPEAT)]),
@@ -209,7 +209,7 @@ playlist_state_restore(const char *line, TextFile &file,
 
 		if (state == PlayerState::STOP /* && config_option */)
 			playlist.current = current;
-		else if (seek_time == 0)
+		else if (seek_time.count() == 0)
 			playlist.PlayPosition(pc, current);
 		else
 			playlist.SeekSongPosition(pc, current, seek_time);