Merge branch 'v0.16.x'

Conflicts:
	configure.ac
	src/player_control.c
	src/player_thread.c
	src/playlist_song.c

12 files changed, 173 insertions, 54 deletions

diff --git a/Makefile.am b/Makefile.am
index 54e03c277..ccf74b9fd 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -873,6 +873,15 @@ FILTER_SRC = \
 
 
 #
+# systemd unit
+#
+
+if HAVE_SYSTEMD
+systemdsystemunit_DATA = \
+	mpd.service
+endif
+
+#
 # Sparse code analysis
 #
 # sparse is a semantic parser
diff --git a/NEWS b/NEWS
index a38f66e8b..933b97958 100644
--- a/NEWS
+++ b/NEWS
@@ -37,7 +37,14 @@ ver 0.16.5 (2010/??/??)
   - ffmpeg: higher precision timestamps
   - ffmpeg: don't require key frame for seeking
   - fix CUE track seeking
+* player:
+  - make seeking to CUE track more reliable
+  - the "seek" command works when MPD is stopped
+  - restore song position from state file (bug fix)
+  - fix crash that sometimes occurred when audio device fails on startup
+  - fix absolute path support in playlists
 * WIN32: close sockets properly
+* install systemd service file if systemd is available
 
 
 ver 0.16.4 (2011/09/01)
diff --git a/configure.ac b/configure.ac
index 18e7e471f..98062eea6 100644
--- a/configure.ac
+++ b/configure.ac
@@ -34,6 +34,13 @@ AM_CONDITIONAL(HAVE_CXX, test x$HAVE_CXX = xyes)
 AC_PROG_INSTALL
 AC_PROG_MAKE_SET
 PKG_PROG_PKG_CONFIG
+AC_ARG_WITH([systemdsystemunitdir],
+	    AS_HELP_STRING([--with-systemdsystemunitdir=DIR], [Directory for systemd service files]),
+	    [], [with_systemdsystemunitdir=$($PKG_CONFIG --variable=systemdsystemunitdir systemd)])
+if test "x$with_systemdsystemunitdir" != xno; then
+	AC_SUBST([systemdsystemunitdir], [$with_systemdsystemunitdir])
+fi
+AM_CONDITIONAL(HAVE_SYSTEMD, [test -n "$with_systemdsystemunitdir" -a "x$with_systemdsystemunitdir" != xno ])
 
 dnl ---------------------------------------------------------------------------
 dnl Declare Variables
@@ -1617,5 +1624,6 @@ dnl Generate files
 dnl ---------------------------------------------------------------------------
 AC_OUTPUT(Makefile)
 AC_OUTPUT(doc/doxygen.conf)
+AC_OUTPUT(mpd.service)
 
 echo 'MPD is ready for compilation, type "make" to begin.'
diff --git a/mpd.service.in b/mpd.service.in
new file mode 100644
index 000000000..9e9282fa6
--- /dev/null
+++ b/mpd.service.in
@@ -0,0 +1,9 @@
+[Unit]
+Description=Music Player Daemon
+After=sound.target
+
+[Service]
+ExecStart=@prefix@/bin/mpd --no-daemon
+
+[Install]
+WantedBy=multi-user.target
diff --git a/src/decoder_api.c b/src/decoder_api.c
index a34e19b1a..311f1f31b 100644
--- a/src/decoder_api.c
+++ b/src/decoder_api.c
@@ -77,30 +77,54 @@ decoder_initialized(struct decoder *decoder,
 }
 
 /**
- * Returns the current decoder command.  May return a "virtual"
- * synthesized command, e.g. to seek to the beginning of the CUE
- * track.
+ * Checks if we need an "initial seek".  If so, then the initial seek
+ * is prepared, and the function returns true.
  */
 G_GNUC_PURE
-static enum decoder_command
-decoder_get_virtual_command(struct decoder *decoder)
+static bool
+decoder_prepare_initial_seek(struct decoder *decoder)
 {
 	const struct decoder_control *dc = decoder->dc;
 	assert(dc->pipe != NULL);
 
 	if (decoder->initial_seek_running)
-		return DECODE_COMMAND_SEEK;
+		/* initial seek has already begun - override any other
+		   command */
+		return true;
 
 	if (decoder->initial_seek_pending) {
 		if (dc->command == DECODE_COMMAND_NONE) {
+			/* begin initial seek */
+
 			decoder->initial_seek_pending = false;
 			decoder->initial_seek_running = true;
-			return DECODE_COMMAND_SEEK;
+			return true;
 		}
 
+		/* skip initial seek when there's another command
+		   (e.g. STOP) */
+
 		decoder->initial_seek_pending = false;
 	}
 
+	return false;
+}
+
+/**
+ * Returns the current decoder command.  May return a "virtual"
+ * synthesized command, e.g. to seek to the beginning of the CUE
+ * track.
+ */
+G_GNUC_PURE
+static enum decoder_command
+decoder_get_virtual_command(struct decoder *decoder)
+{
+	const struct decoder_control *dc = decoder->dc;
+	assert(dc->pipe != NULL);
+
+	if (decoder_prepare_initial_seek(decoder))
+		return DECODE_COMMAND_SEEK;
+
 	return dc->command;
 }
 
@@ -130,7 +154,7 @@ decoder_command_finished(struct decoder *decoder)
 		assert(music_pipe_empty(dc->pipe));
 
 		decoder->initial_seek_running = false;
-		decoder->timestamp = dc->song->start_ms / 1000.;
+		decoder->timestamp = dc->start_ms / 1000.;
 		decoder_unlock(dc);
 		return;
 	}
@@ -162,7 +186,7 @@ double decoder_seek_where(G_GNUC_UNUSED struct decoder * decoder)
 	assert(dc->pipe != NULL);
 
 	if (decoder->initial_seek_running)
-		return dc->song->start_ms / 1000.;
+		return dc->start_ms / 1000.;
 
 	assert(dc->command == DECODE_COMMAND_SEEK);
 
@@ -177,10 +201,12 @@ void decoder_seek_error(struct decoder * decoder)
 
 	assert(dc->pipe != NULL);
 
-	if (decoder->initial_seek_running)
+	if (decoder->initial_seek_running) {
 		/* d'oh, we can't seek to the sub-song start position,
 		   what now? - no idea, ignoring the problem for now. */
+		decoder->initial_seek_running = false;
 		return;
+	}
 
 	assert(dc->command == DECODE_COMMAND_SEEK);
 
@@ -424,8 +450,8 @@ decoder_data(struct decoder *decoder,
 		decoder->timestamp += (double)nbytes /
 			audio_format_time_to_size(&dc->out_audio_format);
 
-		if (dc->song->end_ms > 0 &&
-		    decoder->timestamp >= dc->song->end_ms / 1000.0)
+		if (dc->end_ms > 0 &&
+		    decoder->timestamp >= dc->end_ms / 1000.0)
 			/* the end of this range has been reached:
 			   stop decoding */
 			return DECODE_COMMAND_STOP;
@@ -455,6 +481,14 @@ decoder_tag(G_GNUC_UNUSED struct decoder *decoder, struct input_stream *is,
 
 	update_stream_tag(decoder, is);
 
+	/* check if we're seeking */
+
+	if (decoder_prepare_initial_seek(decoder))
+		/* during initial seek, no music chunk must be created
+		   until seeking is finished; skip the rest of the
+		   function here */
+		return DECODE_COMMAND_SEEK;
+
 	/* send tag to music pipe */
 
 	if (decoder->stream_tag != NULL) {
@@ -468,9 +502,6 @@ decoder_tag(G_GNUC_UNUSED struct decoder *decoder, struct input_stream *is,
 		/* send only the decoder tag */
 		cmd = do_send_tag(decoder, tag);
 
-	if (cmd == DECODE_COMMAND_NONE)
-		cmd = decoder_get_virtual_command(decoder);
-
 	return cmd;
 }
 
diff --git a/src/decoder_control.c b/src/decoder_control.c
index 685db6c22..70f34b331 100644
--- a/src/decoder_control.c
+++ b/src/decoder_control.c
@@ -96,6 +96,7 @@ dc_command_async(struct decoder_control *dc, enum decoder_command cmd)
 
 void
 dc_start(struct decoder_control *dc, struct song *song,
+	 unsigned start_ms, unsigned end_ms,
 	 struct music_buffer *buffer, struct music_pipe *pipe)
 {
 	assert(song != NULL);
@@ -104,6 +105,8 @@ dc_start(struct decoder_control *dc, struct song *song,
 	assert(music_pipe_empty(pipe));
 
 	dc->song = song;
+	dc->start_ms = start_ms;
+	dc->end_ms = end_ms;
 	dc->buffer = buffer;
 	dc->pipe = pipe;
 	dc_command(dc, DECODE_COMMAND_START);
diff --git a/src/decoder_control.h b/src/decoder_control.h
index e1a718a59..566b153ee 100644
--- a/src/decoder_control.h
+++ b/src/decoder_control.h
@@ -85,6 +85,23 @@ struct decoder_control {
 	 */
 	const struct song *song;
 
+	/**
+	 * The initial seek position (in milliseconds), e.g. to the
+	 * start of a sub-track described by a CUE file.
+	 *
+	 * This attribute is set by dc_start().
+	 */
+	unsigned start_ms;
+
+	/**
+	 * The decoder will stop when it reaches this position (in
+	 * milliseconds).  0 means don't stop before the end of the
+	 * file.
+	 *
+	 * This attribute is set by dc_start().
+	 */
+	unsigned end_ms;
+
 	float total_time;
 
 	/** the #music_chunk allocator */
@@ -229,11 +246,14 @@ decoder_current_song(const struct decoder_control *dc)
  *
  * @param the decoder
  * @param song the song to be decoded
+ * @param start_ms see #decoder_control
+ * @param end_ms see #decoder_control
  * @param pipe the pipe which receives the decoded chunks (owned by
  * the caller)
  */
 void
 dc_start(struct decoder_control *dc, struct song *song,
+	 unsigned start_ms, unsigned end_ms,
 	 struct music_buffer *buffer, struct music_pipe *pipe);
 
 void
diff --git a/src/decoder_thread.c b/src/decoder_thread.c
index dbead655d..c2bb655ea 100644
--- a/src/decoder_thread.c
+++ b/src/decoder_thread.c
@@ -380,7 +380,7 @@ decoder_run_song(struct decoder_control *dc,
 {
 	struct decoder decoder = {
 		.dc = dc,
-		.initial_seek_pending = song->start_ms > 0,
+		.initial_seek_pending = dc->start_ms > 0,
 		.initial_seek_running = false,
 	};
 	int ret;
diff --git a/src/output_control.c b/src/output_control.c
index 69553145a..7b95be49b 100644
--- a/src/output_control.c
+++ b/src/output_control.c
@@ -126,9 +126,6 @@ audio_output_disable(struct audio_output *ao)
 	ao_lock_command(ao, AO_COMMAND_DISABLE);
 }
 
-static void
-audio_output_close_locked(struct audio_output *ao);
-
 /**
  * Object must be locked (and unlocked) by the caller.
  */
diff --git a/src/player_control.c b/src/player_control.c
index 51420a43f..d8d54dfd6 100644
--- a/src/player_control.c
+++ b/src/player_control.c
@@ -319,9 +319,6 @@ pc_seek(struct player_control *pc, struct song *song, float seek_time)
 {
 	assert(song != NULL);
 
-	if (pc->state == PLAYER_STATE_STOP)
-		return false;
-
 	player_lock(pc);
 	pc->next_song = song;
 	pc->seek_where = seek_time;
diff --git a/src/player_thread.c b/src/player_thread.c
index 7696c22c0..c0243fa00 100644
--- a/src/player_thread.c
+++ b/src/player_thread.c
@@ -76,6 +76,14 @@ struct player {
 	bool queued;
 
 	/**
+	 * Was any audio output opened successfully?  It might have
+	 * failed meanwhile, but was not explicitly closed by the
+	 * player thread.  When this flag is unset, some output
+	 * methods must not be called.
+	 */
+	bool output_open;
+
+	/**
 	 * the song currently being played
 	 */
 	struct song *song;
@@ -150,7 +158,13 @@ player_dc_start(struct player *player, struct music_pipe *pipe)
 	assert(player->queued || pc->command == PLAYER_COMMAND_SEEK);
 	assert(pc->next_song != NULL);
 
-	dc_start(dc, pc->next_song, player_buffer, pipe);
+	unsigned start_ms = pc->next_song->start_ms;
+	if (pc->command == PLAYER_COMMAND_SEEK)
+		start_ms += (unsigned)(pc->seek_where * 1000);
+
+	dc_start(dc, pc->next_song,
+		 start_ms, pc->next_song->end_ms,
+		 player_buffer, pipe);
 }
 
 /**
@@ -277,6 +291,46 @@ real_song_duration(const struct song *song, double decoder_duration)
 }
 
 /**
+ * Wrapper for audio_output_all_open().  Upon failure, it pauses the
+ * player.
+ *
+ * @return true on success
+ */
+static bool
+player_open_output(struct player *player)
+{
+	struct player_control *pc = player->pc;
+
+	assert(audio_format_defined(&player->play_audio_format));
+	assert(pc->state == PLAYER_STATE_PLAY ||
+	       pc->state == PLAYER_STATE_PAUSE);
+
+	if (audio_output_all_open(&player->play_audio_format, player_buffer)) {
+		player->output_open = true;
+		player->paused = false;
+
+		player_lock(pc);
+		pc->state = PLAYER_STATE_PLAY;
+		player_unlock(pc);
+
+		return true;
+	} else {
+		player->output_open = false;
+
+		/* pause: the user may resume playback as soon as an
+		   audio output becomes available */
+		player->paused = true;
+
+		player_lock(pc);
+		pc->error = PLAYER_ERROR_AUDIO;
+		pc->state = PLAYER_STATE_PAUSE;
+		player_unlock(pc);
+
+		return false;
+	}
+}
+
+/**
  * The decoder has acknowledged the "START" command (see
  * player_wait_for_decoder()).  This function checks if the decoder
  * initialization has completed yet.
@@ -308,7 +362,7 @@ player_check_decoder_startup(struct player *player)
 
 		decoder_unlock(dc);
 
-		if (audio_format_defined(&player->play_audio_format) &&
+		if (player->output_open &&
 		    !audio_output_all_wait(pc, 1))
 			/* the output devices havn't finished playing
 			   all chunks yet - wait for that */
@@ -322,23 +376,12 @@ player_check_decoder_startup(struct player *player)
 		player->play_audio_format = dc->out_audio_format;
 		player->decoder_starting = false;
 
-		if (!player->paused &&
-		    !audio_output_all_open(&dc->out_audio_format,
-					   player_buffer)) {
+		if (!player->paused && !player_open_output(player)) {
 			char *uri = song_get_uri(dc->song);
 			g_warning("problems opening audio device "
 				  "while playing \"%s\"", uri);
 			g_free(uri);
 
-			player_lock(pc);
-			pc->error = PLAYER_ERROR_AUDIO;
-
-			/* pause: the user may resume playback as soon
-			   as an audio output becomes available */
-			pc->state = PLAYER_STATE_PAUSE;
-			player_unlock(pc);
-
-			player->paused = true;
 			return true;
 		}
 
@@ -363,6 +406,7 @@ player_check_decoder_startup(struct player *player)
 static bool
 player_send_silence(struct player *player)
 {
+	assert(player->output_open);
 	assert(audio_format_defined(&player->play_audio_format));
 
 	struct music_chunk *chunk = music_buffer_allocate(player_buffer);
@@ -520,17 +564,8 @@ static void player_process_command(struct player *player)
 			player_lock(pc);
 
 			pc->state = PLAYER_STATE_PLAY;
-		} else if (audio_output_all_open(&player->play_audio_format, player_buffer)) {
-			/* unpaused, continue playing */
-			player_lock(pc);
-
-			pc->state = PLAYER_STATE_PLAY;
 		} else {
-			/* the audio device has failed - rollback to
-			   pause mode */
-			pc->error = PLAYER_ERROR_AUDIO;
-
-			player->paused = true;
+			player_open_output(player);
 
 			player_lock(pc);
 		}
@@ -567,8 +602,7 @@ static void player_process_command(struct player *player)
 		break;
 
 	case PLAYER_COMMAND_REFRESH:
-		if (audio_format_defined(&player->play_audio_format) &&
-		    !player->paused) {
+		if (player->output_open && !player->paused) {
 			player_unlock(pc);
 			audio_output_all_check();
 			player_lock(pc);
@@ -823,6 +857,7 @@ static void do_play(struct player_control *pc, struct decoder_control *dc)
 		.decoder_starting = false,
 		.paused = false,
 		.queued = true,
+		.output_open = false,
 		.song = NULL,
 		.xfade = XFADE_UNKNOWN,
 		.cross_fading = false,
@@ -847,6 +882,10 @@ static void do_play(struct player_control *pc, struct decoder_control *dc)
 
 	player_lock(pc);
 	pc->state = PLAYER_STATE_PLAY;
+
+	if (pc->command == PLAYER_COMMAND_SEEK)
+		player.elapsed_time = pc->seek_where;
+
 	player_command_finished_locked(pc);
 
 	while (true) {
@@ -871,7 +910,7 @@ static void do_play(struct player_control *pc, struct decoder_control *dc)
 				/* not enough decoded buffer space yet */
 
 				if (!player.paused &&
-				    audio_format_defined(&player.play_audio_format) &&
+				    player.output_open &&
 				    audio_output_all_check() < 4 &&
 				    !player_send_silence(&player))
 					break;
@@ -976,7 +1015,7 @@ static void do_play(struct player_control *pc, struct decoder_control *dc)
 				audio_output_all_drain();
 				break;
 			}
-		} else {
+		} else if (player.output_open) {
 			/* the decoder is too busy and hasn't provided
 			   new PCM data in time: send silence (if the
 			   output pipe is empty) */
@@ -1025,6 +1064,7 @@ player_task(gpointer arg)
 
 	while (1) {
 		switch (pc->command) {
+		case PLAYER_COMMAND_SEEK:
 		case PLAYER_COMMAND_QUEUE:
 			assert(pc->next_song != NULL);
 
@@ -1038,7 +1078,6 @@ player_task(gpointer arg)
 
 			/* fall through */
 
-		case PLAYER_COMMAND_SEEK:
 		case PLAYER_COMMAND_PAUSE:
 			pc->next_song = NULL;
 			player_command_finished_locked(pc);
diff --git a/src/playlist_song.c b/src/playlist_song.c
index 8c966d549..afdc0cf9c 100644
--- a/src/playlist_song.c
+++ b/src/playlist_song.c
@@ -115,9 +115,7 @@ playlist_check_translate_song(struct song *song, const char *base_uri,
 
 	if (g_path_is_absolute(uri)) {
 		/* XXX fs_charset vs utf8? */
-		char *prefix = base_uri != NULL
-			? map_uri_fs(base_uri)
-			: map_directory_fs(db_get_root());
+		char *prefix = map_directory_fs(db_get_root());
 
 		if (prefix != NULL && g_str_has_prefix(uri, prefix) &&
 		    uri[strlen(prefix)] == '/')
@@ -130,6 +128,7 @@ playlist_check_translate_song(struct song *song, const char *base_uri,
 			return NULL;
 		}
 
+		base_uri = NULL;
 		g_free(prefix);
 	}