release v0.19.4

A negative uid value means it's not a "local socket" (PF_LOCAL).
uid==0 means user "root" connected.

Makefile.am

@@ -130,7 +130,6 @@ libmpd_a_SOURCES = \
 	src/IOThread.cxx src/IOThread.hxx \
 	src/Instance.cxx src/Instance.hxx \
 	src/win32/Win32Main.cxx \
-	src/osx/OSXMain.cxx \
 	src/GlobalEvents.cxx src/GlobalEvents.hxx \
 	src/MixRampInfo.hxx \
 	src/MusicBuffer.cxx src/MusicBuffer.hxx \
@@ -1113,6 +1112,7 @@ endif
 #
 
 libinput_a_SOURCES = \
+	src/input/Domain.cxx src/input/Domain.hxx \
 	src/input/Init.cxx src/input/Init.hxx \
 	src/input/Registry.cxx src/input/Registry.hxx \
 	src/input/Open.cxx \
@@ -2141,19 +2141,11 @@ user_DATA = $(wildcard doc/user/*.html)
 developerdir = $(docdir)/developer
 developer_DATA = $(wildcard doc/developer/*.html)
 
-if HAVE_XMLTO
-
 DOCBOOK_HTML = $(patsubst %.xml,%/index.html,$(DOCBOOK_FILES))
 
 $(DOCBOOK_HTML): %/index.html: %.xml
 	$(XMLTO) -o $(@D) --stringparam chunker.output.encoding=utf-8 html --stringparam use.id.as.filename=1 $<
 
-else
-
-DOCBOOK_HTML =
-
-endif
-
 doc/api/html/index.html: doc/doxygen.conf
 	@$(MKDIR_P) $(@D)
 	$(DOXYGEN) $<

NEWS

@@ -1,3 +1,47 @@
+ver 0.19.4 (2014/11/18)
+* protocol
+  - workaround for buggy clients that send "add /"
+* decoder
+  - ffmpeg: support opus
+  - opus: add MIME types audio/ogg and application/ogg
+* fix crash on failed filename charset conversion
+* fix local socket detection from uid=0 (root)
+
+ver 0.19.3 (2014/11/11)
+* protocol
+  - fix "(null)" result string to "list" when AlbumArtist is disabled
+* database
+  - upnp: fix breakage due to malformed URIs
+* input
+  - curl: another fix for redirected streams
+* decoder
+  - audiofile: fix crash while playing streams
+  - audiofile: fix bit rate calculation
+  - ffmpeg: support opus
+  - opus: fix bogus duration on streams
+  - opus: support chained streams
+  - opus: improved error logging
+* fix distorted audio with soxr resampler
+* fix build failure on Mac OS X with non-Apple compilers
+
+ver 0.19.2 (2014/11/02)
+* input
+  - curl: fix redirected streams
+* playlist
+  - don't allow empty playlist name
+  - m3u: don't ignore unterminated last line
+  - m3u: recognize the file suffix ".m3u8"
+* decoder
+  - ignore URI query string for plugin detection
+  - faad: remove workaround for ancient libfaad2 ABI bug
+  - ffmpeg: recognize MIME type audio/aacp
+  - mad: fix negative replay gain values
+* output
+  - fix memory leak after filter initialization error
+  - fall back to PCM if given DSD sample rate is not supported
+* fix assertion failure on unsupported PCM conversion
+* auto-disable plugins that require GLib when --disable-glib is used
+
 ver 0.19.1 (2014/10/19)
 * input
   - mms: fix deadlock bug
@@ -85,6 +129,21 @@ ver 0.19 (2014/10/10)
 * install systemd unit for socket activation
 * Android port
 
+ver 0.18.18 (2014/11/18)
+* decoder
+  - ffmpeg: support opus
+* fix crash on failed filename charset conversion
+* fix local socket detection from uid=0 (root)
+
+ver 0.18.17 (2014/11/02)
+* playlist
+  - don't allow empty playlist name
+  - m3u: recognize the file suffix ".m3u8"
+* decoder
+  - ignore URI query string for plugin detection
+  - faad: remove workaround for ancient libfaad2 ABI bug
+  - ffmpeg: recognize MIME type audio/aacp
+
 ver 0.18.16 (2014/09/26)
 * fix DSD breakage due to typo in configure.ac
 

configure.ac

@@ -1,10 +1,10 @@
 AC_PREREQ(2.60)
 
-AC_INIT(mpd, 0.19.1, musicpd-dev-team@lists.sourceforge.net)
+AC_INIT(mpd, 0.19.4, musicpd-dev-team@lists.sourceforge.net)
 
 VERSION_MAJOR=0
 VERSION_MINOR=19
-VERSION_REVISION=0
+VERSION_REVISION=4
 VERSION_EXTRA=0
 
 AC_CONFIG_SRCDIR([src/Main.cxx])
@@ -293,7 +293,9 @@ fi
 AC_ARG_ENABLE(libmpdclient,
 	AS_HELP_STRING([--enable-libmpdclient],
 		[enable support for the MPD client]),,
-	enable_libmpdclient=$database_auto)
+	enable_libmpdclient=auto)
+MPD_DEPENDS([enable_libmpdclient], [enable_database],
+	[Cannot use --enable-libmpdclient with --disable-database])
 
 AC_ARG_ENABLE(expat,
 	AS_HELP_STRING([--enable-expat],
@@ -303,7 +305,9 @@ AC_ARG_ENABLE(expat,
 AC_ARG_ENABLE(upnp,
 	AS_HELP_STRING([--enable-upnp],
 		[enable UPnP client support (default: auto)]),,
-	enable_upnp=$database_auto)
+	enable_upnp=auto)
+MPD_DEPENDS([enable_upnp], [enable_database],
+	[Cannot use --enable-upnp with --disable-database])
 
 AC_ARG_ENABLE(adplug,
 	AS_HELP_STRING([--enable-adplug],
@@ -323,6 +327,8 @@ AC_ARG_ENABLE(ao,
 	AS_HELP_STRING([--enable-ao],
 		[enable support for libao]),,
 	enable_ao=auto)
+MPD_DEPENDS([enable_ao], [enable_glib],
+	[Cannot use --enable-ao with --disable-glib])
 
 AC_ARG_ENABLE(audiofile,
 	AS_HELP_STRING([--enable-audiofile],
@@ -343,6 +349,8 @@ AC_ARG_ENABLE(cdio-paranoia,
 	AS_HELP_STRING([--enable-cdio-paranoia],
 		[enable support for audio CD support]),,
 	enable_cdio_paranoia=auto)
+MPD_DEPENDS([enable_cdio_paranoia], [enable_glib],
+	[Cannot use --enable-cdio-paranoia with --disable-glib])
 
 AC_ARG_ENABLE(curl,
 	AS_HELP_STRING([--enable-curl],
@@ -398,11 +406,15 @@ AC_ARG_ENABLE(gme,
 	AS_HELP_STRING([--enable-gme],
 		[enable Blargg's game music emulator plugin]),,
 	enable_gme=auto)
+MPD_DEPENDS([enable_gme], [enable_glib],
+	[Cannot use --enable-gme with --disable-glib])
 
 AC_ARG_ENABLE(httpd-output,
 	AS_HELP_STRING([--enable-httpd-output],
 		[enables the HTTP server output]),,
 	[enable_httpd_output=auto])
+MPD_DEPENDS([enable_httpd_output], [enable_glib],
+	[Cannot use --enable-httpd-output with --disable-glib])
 
 AC_ARG_ENABLE(id3,
 	AS_HELP_STRING([--enable-id3],
@@ -428,6 +440,8 @@ AC_ARG_ENABLE(jack,
 	AS_HELP_STRING([--enable-jack],
 		[enable jack support]),,
 	enable_jack=auto)
+MPD_DEPENDS([enable_jack], [enable_glib],
+	[Cannot use --enable-jack with --disable-glib])
 
 AC_SYS_LARGEFILE
 
@@ -440,6 +454,8 @@ AC_ARG_ENABLE(soundcloud,
 	AS_HELP_STRING([--enable-soundcloud],
 		[enable support for soundcloud.com]),,
 	[enable_soundcloud=auto])
+MPD_DEPENDS([enable_soundcloud], [enable_glib],
+	[Cannot use --enable-soundcloud with --disable-glib])
 
 AC_ARG_ENABLE(lame-encoder,
 	AS_HELP_STRING([--enable-lame-encoder],
@@ -534,6 +550,8 @@ AC_ARG_ENABLE(sidplay,
 	AS_HELP_STRING([--enable-sidplay],
 		[enable C64 SID support via libsidplay2]),,
 	enable_sidplay=auto)
+MPD_DEPENDS([enable_sidplay], [enable_glib],
+	[Cannot use --enable-sidplay with --disable-glib])
 
 AC_ARG_ENABLE(shine-encoder,
 	AS_HELP_STRING([--enable-shine-encoder],
@@ -559,6 +577,8 @@ AC_ARG_ENABLE(sqlite,
 	AS_HELP_STRING([--enable-sqlite],
 		[enable support for the SQLite database]),,
 	[enable_sqlite=$database_auto])
+MPD_DEPENDS([enable_sqlite], [enable_glib],
+	[Cannot use --enable-sqlite with --disable-glib])
 
 AC_ARG_ENABLE(systemd-daemon,
 	AS_HELP_STRING([--enable-systemd-daemon],
@@ -599,6 +619,8 @@ AC_ARG_ENABLE(vorbis-encoder,
 	AS_HELP_STRING([--enable-vorbis-encoder],
 		[enable the Ogg Vorbis encoder]),,
 	[enable_vorbis_encoder=auto])
+MPD_DEPENDS([enable_vorbis_encoder], [enable_glib],
+	[Cannot use --enable-vorbis-encoder with --disable-glib])
 
 AC_ARG_ENABLE(wave-encoder,
 	AS_HELP_STRING([--enable-wave-encoder],
@@ -609,6 +631,8 @@ AC_ARG_ENABLE(wavpack,
 	AS_HELP_STRING([--enable-wavpack],
 		[enable WavPack support]),,
 	enable_wavpack=auto)
+MPD_DEPENDS([enable_wavpack], [enable_glib],
+	[Cannot use --enable-wavpack with --disable-glib])
 
 AC_ARG_ENABLE(werror,
 	AS_HELP_STRING([--enable-werror],
@@ -1709,8 +1733,11 @@ dnl Documentation
 dnl ---------------------------------------------------------------------------
 if test x$enable_documentation = xyes; then
 	AC_PATH_PROG(XMLTO, xmlto)
+	if test x$XMLTO = x; then
+		AC_MSG_ERROR([xmlto not found])
+	fi
+
 	AC_SUBST(XMLTO)
-	AM_CONDITIONAL(HAVE_XMLTO, test x$XMLTO != x)
 
 	AC_PATH_PROG(DOXYGEN, doxygen)
 	if test x$DOXYGEN = x; then
@@ -1718,8 +1745,6 @@ if test x$enable_documentation = xyes; then
 	fi
 
 	AC_SUBST(DOXYGEN)
-else
-	AM_CONDITIONAL(HAVE_XMLTO, false)
 fi
 
 AM_CONDITIONAL(ENABLE_DOCUMENTATION, test x$enable_documentation = xyes)
@@ -1826,9 +1851,14 @@ results(ipv6, "IPv6")
 results(tcp, "TCP")
 results(un,[UNIX Domain Sockets])
 
+printf '\nStorage support:\n\t'
+results(nfs, [NFS])
+results(smbclient, [SMB])
+
 printf '\nFile format support:\n\t'
 results(aac, [AAC])
 results(adplug, [AdPlug])
+results(dsd, [DSD])
 results(sidplay, [C64 SID])
 results(ffmpeg, [FFMPEG])
 results(flac, [FLAC])

m4/faad.m4

@@ -62,36 +62,7 @@ int main() {
 	CPPFLAGS=$oldcppflags
 fi
 
-if test x$enable_aac = xyes; then
-	oldcflags=$CFLAGS
-	oldlibs=$LIBS
-	oldcppflags=$CPPFLAGS
-	CFLAGS="$CFLAGS $FAAD_CFLAGS -Werror"
-	LIBS="$LIBS $FAAD_LIBS"
-	CPPFLAGS=$CFLAGS
-
-	AC_MSG_CHECKING(for broken libfaad headers)
-	AC_COMPILE_IFELSE([AC_LANG_SOURCE([
-#include <faad.h>
-#include <stddef.h>
-#include <stdint.h>
-
-int main() {
-	unsigned char channels;
-	uint32_t sample_rate;
-
-	NeAACDecInit2(NULL, NULL, 0, &sample_rate, &channels);
-	return 0;
-}
-	])],
-		[AC_MSG_RESULT(correct)],
-		[AC_MSG_RESULT(broken);
-		AC_DEFINE(HAVE_FAAD_LONG, 1, [Define if faad.h uses the broken "unsigned long" pointers])])
-
-	CFLAGS=$oldcflags
-	LIBS=$oldlibs
-	CPPFLAGS=$oldcppflags
-else
+if test x$enable_aac = xno; then
 	FAAD_LIBS=""
 	FAAD_CFLAGS=""
 fi

m4/mpd_depends.m4

@@ -0,0 +1,9 @@
+AC_DEFUN([MPD_DEPENDS], [
+	if test x$$2 = xno; then
+		if test x$$1 = xauto; then
+			$1=no
+		elif test x$$1 = xyes; then
+			AC_MSG_ERROR([$3])
+		fi
+	fi
+])

src/Main.cxx

@@ -114,6 +114,10 @@
 #include <ws2tcpip.h>
 #endif
 
+#ifdef __BLOCKS__
+#include <dispatch/dispatch.h>
+#endif
+
 #include <limits.h>
 
 static constexpr unsigned DEFAULT_BUFFER_SIZE = 4096;
@@ -401,8 +405,6 @@ int main(int argc, char *argv[])
 {
 #ifdef WIN32
 	return win32_main(argc, argv);
-#elif __APPLE__
-	return osx_main(argc, argv);
 #else
 	return mpd_main(argc, argv);
 #endif
@@ -410,6 +412,8 @@ int main(int argc, char *argv[])
 
 #endif
 
+static int mpd_main_after_fork(struct options);
+
 #ifdef ANDROID
 static inline
 #endif
@@ -513,6 +517,27 @@ int mpd_main(int argc, char *argv[])
 	daemonize_begin(options.daemon);
 #endif
 
+#ifdef __BLOCKS__
+	/* Runs the OS X native event loop in the main thread, and runs
+	   the rest of mpd_main on a new thread. This lets CoreAudio receive
+	   route change notifications (e.g. plugging or unplugging headphones).
+	   All hardware output on OS X ultimately uses CoreAudio internally.
+	   This must be run after forking; if dispatch is called before forking,
+	   the child process will have a broken internal dispatch state. */
+	dispatch_async(dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0), ^{
+		exit(mpd_main_after_fork(options));
+	});
+	dispatch_main();
+	return EXIT_FAILURE; // unreachable, because dispatch_main never returns
+#else
+	return mpd_main_after_fork(options);
+#endif
+}
+
+static int mpd_main_after_fork(struct options options)
+{
+	Error error;
+
 	GlobalEvents::Initialize(*instance->event_loop);
 	GlobalEvents::Register(GlobalEvents::IDLE, idle_event_emitted);
 #ifdef WIN32

src/Main.hxx

@@ -75,15 +75,4 @@ win32_app_stopping(void);
 
 #endif
 
-#ifdef __APPLE__
-
-/* Runs the OS X native event loop in the main thread, and runs
- * mpd_main on a new thread. This lets CoreAudio receive route
- * change notifications (e.g. plugging or unplugging headphones).
- * All hardware output on OS X ultimately uses CoreAudio internally.
- */
-int osx_main(int argc, char *argv[]);
-
-#endif
-
 #endif

src/PlaylistFile.cxx

@@ -64,6 +64,10 @@ spl_global_init(void)
 bool
 spl_valid_name(const char *name_utf8)
 {
+	if (*name_utf8 == 0)
+		/* empty name not allowed */
+		return false;
+
 	/*
 	 * Not supporting '/' was done out of laziness, and we should
 	 * really strive to support it in the future.

src/TagStream.cxx

@@ -46,7 +46,8 @@ tag_stream_scan(InputStream &is, const tag_handler &handler, void *ctx)
 {
 	assert(is.IsReady());
 
-	const char *const suffix = uri_get_suffix(is.GetURI());
+	UriSuffixBuffer suffix_buffer;
+	const char *const suffix = uri_get_suffix(is.GetURI(), suffix_buffer);
 	const char *const mime = is.GetMimeType();
 
 	if (suffix == nullptr && mime == nullptr)

src/client/Client.hxx

@@ -127,7 +127,7 @@ public:
 	 * a local (UNIX domain) socket?
 	 */
 	bool IsLocal() const {
-		return uid > 0;
+		return uid >= 0;
 	}
 
 	unsigned GetPermission() const {

src/client/ClientFile.cxx

@@ -41,7 +41,7 @@ Client::AllowFile(Path path_fs, Error &error) const
 		   instance */
 		return true;
 
-	if (uid <= 0) {
+	if (uid < 0) {
 		/* unauthenticated client */
 		error.Set(ack_domain, ACK_ERROR_PERMISSION, "Access denied");
 		return false;

src/command/QueueCommands.cxx

@@ -61,7 +61,16 @@ translate_uri(Client &client, const char *uri)
 CommandResult
 handle_add(Client &client, gcc_unused unsigned argc, char *argv[])
 {
-	const char *const uri = translate_uri(client, argv[1]);
+	const char *uri = argv[1];
+	if (memcmp(uri, "/", 2) == 0)
+		/* this URI is malformed, but some clients are buggy
+		   and use "add /" to add the whole database, which
+		   was never intended to work, but once did; in order
+		   to retain backwards compatibility, work around this
+		   here */
+		uri = "";
+
+	uri = translate_uri(client, uri);
 	if (uri == nullptr)
 		return CommandResult::ERROR;
 

src/db/Count.cxx

@@ -23,7 +23,7 @@
 #include "Interface.hxx"
 #include "client/Client.hxx"
 #include "LightSong.hxx"
-#include "tag/Set.hxx"
+#include "tag/Tag.hxx"
 
 #include <functional>
 #include <map>

src/db/plugins/upnp/Directory.cxx

@@ -129,6 +129,7 @@ public:
 		 state(NONE),
 		 tag_type(TAG_NUM_OF_ITEM_TYPES)
 	{
+		m_tobj.clear();
 	}
 
 protected:

src/decoder/DecoderThread.cxx

@@ -237,7 +237,8 @@ static bool
 decoder_run_stream_locked(Decoder &decoder, InputStream &is,
 			  const char *uri, bool &tried_r)
 {
-	const char *const suffix = uri_get_suffix(uri);
+	UriSuffixBuffer suffix_buffer;
+	const char *const suffix = uri_get_suffix(uri, suffix_buffer);
 
 	using namespace std::placeholders;
 	const auto f = std::bind(decoder_run_stream_plugin,

src/decoder/plugins/AudiofileDecoderPlugin.cxx

@@ -209,7 +209,7 @@ audiofile_stream_decode(Decoder &decoder, InputStream &is)
 	const auto total_time = audiofile_get_duration(fh);
 
 	const uint16_t kbit_rate = (uint16_t)
-		(is.GetSize() * uint64_t(8000) / total_time.ToMS());
+		(is.GetSize() * uint64_t(8) / total_time.ToMS());
 
 	const unsigned frame_size = (unsigned)
 		afGetVirtualFrameSize(fh, AF_DEFAULT_TRACK, true);

src/decoder/plugins/FaadDecoderPlugin.cxx

@@ -255,20 +255,12 @@ faad_decoder_init(NeAACDecHandle decoder, DecoderBuffer &buffer,
 	}
 
 	uint8_t channels;
-	uint32_t sample_rate;
-#ifdef HAVE_FAAD_LONG
-	/* neaacdec.h declares all arguments as "unsigned long", but
-	   internally expects uint32_t pointers.  To avoid gcc
-	   warnings, use this workaround. */
-	unsigned long *sample_rate_p = (unsigned long *)(void *)&sample_rate;
-#else
-	uint32_t *sample_rate_p = &sample_rate;
-#endif
+	unsigned long sample_rate;
 	long nbytes = NeAACDecInit(decoder,
 				   /* deconst hack, libfaad requires this */
 				   const_cast<unsigned char *>(data.data),
 				   data.size,
-				   sample_rate_p, &channels);
+				   &sample_rate, &channels);
 	if (nbytes < 0) {
 		error.Set(faad_decoder_domain, "Not an AAC stream");
 		return false;

src/decoder/plugins/FfmpegDecoderPlugin.cxx

@@ -657,7 +657,7 @@ static const char *const ffmpeg_suffixes[] = {
 	"mj2", "mjpeg", "mjpg", "mka", "mkv", "mlp", "mm", "mmf", "mov", "mp+",
 	"mp1", "mp2", "mp3", "mp4", "mpc", "mpeg", "mpg", "mpga", "mpp", "mpu",
 	"mve", "mvi", "mxf", "nc", "nsv", "nut", "nuv", "oga", "ogm", "ogv",
-	"ogx", "oma", "ogg", "omg", "psp", "pva", "qcp", "qt", "r3d", "ra",
+	"ogx", "oma", "ogg", "omg", "opus", "psp", "pva", "qcp", "qt", "r3d", "ra",
 	"ram", "rl2", "rm", "rmvb", "roq", "rpl", "rvc", "shn", "smk", "snd",
 	"sol", "son", "spx", "str", "swf", "tgi", "tgq", "tgv", "thp", "ts",
 	"tsp", "tta", "xa", "xvid", "uv", "uv2", "vb", "vid", "vob", "voc",
@@ -680,6 +680,7 @@ static const char *const ffmpeg_mime_types[] = {
 	"audio/8svx",
 	"audio/16sv",
 	"audio/aac",
+	"audio/aacp",
 	"audio/ac3",
 	"audio/aiff"
 	"audio/amr",
@@ -690,6 +691,7 @@ static const char *const ffmpeg_mime_types[] = {
 	"audio/mpeg",
 	"audio/musepack",
 	"audio/ogg",
+	"audio/opus",
 	"audio/qcelp",
 	"audio/vorbis",
 	"audio/vorbis+ogg",

src/decoder/plugins/MadDecoderPlugin.cxx

@@ -657,7 +657,7 @@ parse_lame(struct lame *lame, struct mad_bitptr *ptr, int *bitlen)
 	unsigned name = mad_bit_read(ptr, 3); /* gain name */
 	unsigned orig = mad_bit_read(ptr, 3); /* gain originator */
 	unsigned sign = mad_bit_read(ptr, 1); /* sign bit */
-	unsigned gain = mad_bit_read(ptr, 9); /* gain*10 */
+	int gain = mad_bit_read(ptr, 9); /* gain*10 */
 	if (gain && name == 1 && orig != 0) {
 		lame->track_gain = ((sign ? -gain : gain) / 10.0) + adj;
 		FormatDebug(mad_domain, "LAME track gain found: %f",

src/decoder/plugins/Mp4v2DecoderPlugin.cxx

@@ -39,15 +39,7 @@ static MP4TrackId
 mp4_get_aac_track(MP4FileHandle handle, NeAACDecHandle decoder,
 		  AudioFormat &audio_format, Error &error)
 {
-	uint32_t sample_rate;
-#ifdef HAVE_FAAD_LONG
-	/* neaacdec.h declares all arguments as "unsigned long", but
-	   internally expects uint32_t pointers.  To avoid gcc
-	   warnings, use this workaround. */
-	unsigned long *sample_rate_r = (unsigned long*)&sample_rate;
-#else
-	uint32_t *sample_rate_r = sample_rate;
-#endif
+	unsigned long sample_rate;
 
 	const MP4TrackId tracks = MP4GetNumberOfTracks(handle);
 
@@ -80,7 +72,7 @@ mp4_get_aac_track(MP4FileHandle handle, NeAACDecHandle decoder,
 
 		uint8_t channels;
 		int32_t nbytes = NeAACDecInit(decoder, buff, buff_size,
-				       sample_rate_r, &channels);
+					      &sample_rate, &channels);
 
 		free(buff);
 

src/decoder/plugins/OpusDecoderPlugin.cxx

@@ -40,6 +40,12 @@
 
 static constexpr opus_int32 opus_sample_rate = 48000;
 
+/**
+ * Allocate an output buffer for 16 bit PCM samples big enough to hold
+ * a quarter second, larger than 120ms required by libopus.
+ */
+static constexpr unsigned opus_output_buffer_frames = opus_sample_rate / 4;
+
 gcc_pure
 static bool
 IsOpusHead(const ogg_packet &packet)
@@ -70,10 +76,16 @@ class MPDOpusDecoder {
 
 	OpusDecoder *opus_decoder;
 	opus_int16 *output_buffer;
-	unsigned output_size;
+
+	/**
+	 * If non-zero, then a previous Opus stream has been found
+	 * already with this number of channels.  If opus_decoder is
+	 * nullptr, then its end-of-stream packet has been found
+	 * already.
+	 */
+	unsigned previous_channels;
 
 	bool os_initialized;
-	bool found_opus;
 
 	int opus_serialno;
 
@@ -86,8 +98,9 @@ public:
 		       InputStream &_input_stream)
 		:decoder(_decoder), input_stream(_input_stream),
 		 opus_decoder(nullptr),
-		 output_buffer(nullptr), output_size(0),
-		 os_initialized(false), found_opus(false) {}
+		 output_buffer(nullptr),
+		 previous_channels(0),
+		 os_initialized(false) {}
 	~MPDOpusDecoder();
 
 	bool ReadFirstPage(OggSyncState &oy);
@@ -96,6 +109,7 @@ public:
 	DecoderCommand HandlePackets();
 	DecoderCommand HandlePacket(const ogg_packet &packet);
 	DecoderCommand HandleBOS(const ogg_packet &packet);
+	DecoderCommand HandleEOS();
 	DecoderCommand HandleTags(const ogg_packet &packet);
 	DecoderCommand HandleAudio(const ogg_packet &packet);
 
@@ -159,12 +173,14 @@ inline DecoderCommand
 MPDOpusDecoder::HandlePacket(const ogg_packet &packet)
 {
 	if (packet.e_o_s)
-		return DecoderCommand::STOP;
+		return HandleEOS();
 
 	if (packet.b_o_s)
 		return HandleBOS(packet);
-	else if (!found_opus)
+	else if (opus_decoder == nullptr) {
+		LogDebug(opus_domain, "BOS packet expected");
 		return DecoderCommand::STOP;
+	}
 
 	if (IsOpusTags(packet))
 		return HandleTags(packet);
@@ -184,7 +200,7 @@ LoadEOSPacket(InputStream &is, Decoder *decoder, int serialno,
 		/* we do this for local files only, because seeking
 		   around remote files is expensive and not worth the
 		   troubl */
-		return -1;
+		return false;
 
 	const auto old_offset = is.GetOffset();
 
@@ -225,19 +241,29 @@ MPDOpusDecoder::HandleBOS(const ogg_packet &packet)
 {
 	assert(packet.b_o_s);
 
-	if (found_opus || !IsOpusHead(packet))
+	if (opus_decoder != nullptr || !IsOpusHead(packet)) {
+		LogDebug(opus_domain, "BOS packet must be OpusHead");
 		return DecoderCommand::STOP;
+	}
 
 	unsigned channels;
 	if (!ScanOpusHeader(packet.packet, packet.bytes, channels) ||
-	    !audio_valid_channel_count(channels))
+	    !audio_valid_channel_count(channels)) {
+		LogDebug(opus_domain, "Malformed BOS packet");
 		return DecoderCommand::STOP;
+	}
 
 	assert(opus_decoder == nullptr);
-	assert(output_buffer == nullptr);
+	assert((previous_channels == 0) == (output_buffer == nullptr));
+
+	if (previous_channels != 0 && channels != previous_channels) {
+		FormatWarning(opus_domain,
+			      "Next stream has different channels (%u -> %u)",
+			      previous_channels, channels);
+		return DecoderCommand::STOP;
+	}
 
 	opus_serialno = os.serialno;
-	found_opus = true;
 
 	/* TODO: parse attributes from the OpusHead (sample rate,
 	   channels, ...) */
@@ -251,6 +277,13 @@ MPDOpusDecoder::HandleBOS(const ogg_packet &packet)
 		return DecoderCommand::STOP;
 	}
 
+	if (previous_channels != 0) {
+		/* decoder was already initialized by the previous
+		   stream; skip the rest of this method */
+		LogDebug(opus_domain, "Found another stream");
+		return decoder_get_command(decoder);
+	}
+
 	eos_granulepos = LoadEOSGranulePos(input_stream, &decoder,
 					   opus_serialno);
 	const auto duration = eos_granulepos >= 0
@@ -258,21 +291,36 @@ MPDOpusDecoder::HandleBOS(const ogg_packet &packet)
 						      opus_sample_rate)
 		: SignedSongTime::Negative();
 
+	previous_channels = channels;
 	const AudioFormat audio_format(opus_sample_rate,
 				       SampleFormat::S16, channels);
 	decoder_initialized(decoder, audio_format,
 			    eos_granulepos > 0, duration);
 	frame_size = audio_format.GetFrameSize();
 
-	/* allocate an output buffer for 16 bit PCM samples big enough
-	   to hold a quarter second, larger than 120ms required by
-	   libopus */
-	output_size = audio_format.sample_rate / 4;
-	output_buffer = new opus_int16[output_size * audio_format.channels];
+	output_buffer = new opus_int16[opus_output_buffer_frames
+				       * audio_format.channels];
 
 	return decoder_get_command(decoder);
 }
 
+inline DecoderCommand
+MPDOpusDecoder::HandleEOS()
+{
+	if (eos_granulepos < 0 && previous_channels != 0) {
+		/* allow chaining of (unseekable) streams */
+		assert(opus_decoder != nullptr);
+		assert(output_buffer != nullptr);
+
+		opus_decoder_destroy(opus_decoder);
+		opus_decoder = nullptr;
+
+		return decoder_get_command(decoder);
+	}
+
+	return DecoderCommand::STOP;
+}
+
 inline DecoderCommand
 MPDOpusDecoder::HandleTags(const ogg_packet &packet)
 {
@@ -304,10 +352,11 @@ MPDOpusDecoder::HandleAudio(const ogg_packet &packet)
 	int nframes = opus_decode(opus_decoder,
 				  (const unsigned char*)packet.packet,
 				  packet.bytes,
-				  output_buffer, output_size,
+				  output_buffer, opus_output_buffer_frames,
 				  0);
 	if (nframes < 0) {
-		LogError(opus_domain, opus_strerror(nframes));
+		FormatError(opus_domain, "libopus error: %s",
+			    opus_strerror(nframes));
 		return DecoderCommand::STOP;
 	}
 
@@ -461,6 +510,13 @@ static const char *const opus_suffixes[] = {
 };
 
 static const char *const opus_mime_types[] = {
+	/* the official MIME type (RFC 5334) */
+	"audio/ogg",
+
+	/* deprecated (RFC 5334) */
+	"application/ogg",
+
+	/* deprecated; from an early draft */
 	"audio/opus",
 	nullptr
 };

src/event/ServerSocket.cxx

@@ -130,7 +130,7 @@ get_remote_uid(int fd)
 	socklen_t len = sizeof (cred);
 
 	if (getsockopt(fd, SOL_SOCKET, SO_PEERCRED, &cred, &len) < 0)
-		return 0;
+		return -1;
 
 	return cred.uid;
 #else

src/fs/AllocatedPath.cxx

@@ -46,7 +46,11 @@ AllocatedPath
 AllocatedPath::FromUTF8(const char *path_utf8)
 {
 #ifdef HAVE_GLIB
-	return AllocatedPath(Donate(), ::PathFromUTF8(path_utf8));
+	char *path = ::PathFromUTF8(path_utf8);
+	if (path == nullptr)
+		return AllocatedPath::Null();
+
+	return AllocatedPath(Donate(), path);
 #else
 	return FromFS(path_utf8);
 #endif

src/fs/Charset.cxx

@@ -34,6 +34,8 @@
 #include <assert.h>
 #include <string.h>
 
+#ifdef HAVE_GLIB
+
 /**
  * Maximal number of bytes required to represent path name in UTF-8
  * (including nul-terminator).
@@ -44,7 +46,6 @@
  */
 static constexpr size_t MPD_PATH_MAX_UTF8 = (MPD_PATH_MAX - 1) * 4 + 1;
 
-#ifdef HAVE_GLIB
 static std::string fs_charset;
 
 gcc_pure

src/input/AsyncInputStream.cxx

@@ -19,6 +19,7 @@
 
 #include "config.h"
 #include "AsyncInputStream.hxx"
+#include "Domain.hxx"
 #include "tag/Tag.hxx"
 #include "event/Call.hxx"
 #include "thread/Cond.hxx"
@@ -113,8 +114,10 @@ AsyncInputStream::Seek(offset_type new_offset, Error &error)
 		/* no-op */
 		return true;
 
-	if (!IsSeekable())
+	if (!IsSeekable()) {
+		error.Set(input_domain, "Not seekable");
 		return false;
+	}
 
 	/* check if we can fast-forward the buffer */
 

src/input/AsyncInputStream.hxx

@@ -83,6 +83,10 @@ protected:
 	 */
 	void SetTag(Tag *_tag);
 
+	void ClearTag() {
+		SetTag(nullptr);
+	}
+
 	void Pause();
 
 	bool IsPaused() const {

src/input/Domain.cxx

@@ -18,20 +18,7 @@
  */
 
 #include "config.h"
-#include "Main.hxx"
+#include "Domain.hxx"
+#include "util/Domain.hxx"
 
-#ifdef __APPLE__
-
-#include <stdlib.h>
-#include <dispatch/dispatch.h>
-
-int osx_main(int argc, char *argv[])
-{
-	dispatch_async(dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0), ^{
-		exit(mpd_main(argc, argv));
-	});
-	dispatch_main();
-	return EXIT_FAILURE; // unreachable, because dispatch_main never returns
-}
-
-#endif
+const Domain input_domain("input");

src/input/Domain.hxx

@@ -0,0 +1,27 @@
+/*
+ * Copyright (C) 2003-2014 The Music Player Daemon Project
+ * http://www.musicpd.org
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ */
+
+#ifndef MPD_INPUT_DOMAIN_HXX
+#define MPD_INPUT_DOMAIN_HXX
+
+class Domain;
+
+extern const Domain input_domain;
+
+#endif

src/input/InputStream.hxx

@@ -200,6 +200,10 @@ public:
 		return mime.empty() ? nullptr : mime.c_str();
 	}
 
+	void ClearMimeType() {
+		mime.clear();
+	}
+
 	gcc_nonnull_all
 	void SetMimeType(const char *_mime) {
 		assert(!ready);

src/input/Open.cxx

@@ -22,14 +22,13 @@
 #include "Registry.hxx"
 #include "InputPlugin.hxx"
 #include "LocalOpen.hxx"
+#include "Domain.hxx"
 #include "plugins/RewindInputPlugin.hxx"
 #include "fs/Traits.hxx"
 #include "fs/Path.hxx"
 #include "util/Error.hxx"
 #include "util/Domain.hxx"
 
-static constexpr Domain input_domain("input");
-
 InputStream *
 InputStream::Open(const char *url,
 		  Mutex &mutex, Cond &cond,

src/input/TextInputStream.cxx

@@ -38,8 +38,8 @@ TextInputStream::ReadLine()
 	while (true) {
 		auto dest = buffer.Write();
 		if (dest.size < 2) {
-			/* end of file (or line too long): terminate
-			   the current line */
+			/* line too long: terminate the current
+			   line */
 
 			assert(!dest.IsEmpty());
 			dest[0] = 0;
@@ -66,7 +66,19 @@ TextInputStream::ReadLine()
 		if (line != nullptr)
 			return line;
 
-		if (nbytes == 0)
-			return nullptr;
+		if (nbytes == 0) {
+			/* end of file: see if there's an unterminated
+			   line */
+
+			dest = buffer.Write();
+			assert(!dest.IsEmpty());
+			dest[0] = 0;
+
+			auto r = buffer.Read();
+			buffer.Clear();
+			return r.IsEmpty()
+				? nullptr
+				: r.data;
+		}
 	}
 }

src/input/plugins/CurlInputPlugin.cxx

@@ -109,6 +109,13 @@ struct CurlInputStream final : public AsyncInputStream {
 	 */
 	void FreeEasyIndirect();
 
+	/**
+	 * Called when a new response begins.  This is used to discard
+	 * headers from previous responses (for example authentication
+	 * and redirects).
+	 */
+	void ResponseBoundary();
+
 	void HeaderReceived(const char *name, std::string &&value);
 
 	size_t DataReceived(const void *ptr, size_t size);
@@ -597,6 +604,24 @@ CurlInputStream::~CurlInputStream()
 	FreeEasyIndirect();
 }
 
+inline void
+CurlInputStream::ResponseBoundary()
+{
+	/* undo all effects of HeaderReceived() because the previous
+	   response was not applicable for this stream */
+
+	if (IsSeekPending())
+		/* don't update metadata while seeking */
+		return;
+
+	seekable = false;
+	size = UNKNOWN_SIZE;
+	ClearMimeType();
+	ClearTag();
+
+	// TODO: reset the IcyInputStream?
+}
+
 inline void
 CurlInputStream::HeaderReceived(const char *name, std::string &&value)
 {
@@ -645,6 +670,11 @@ input_curl_headerfunction(void *ptr, size_t size, size_t nmemb, void *stream)
 	size *= nmemb;
 
 	const char *header = (const char *)ptr;
+	if (size > 5 && memcmp(header, "HTTP/", 5) == 0) {
+		c.ResponseBoundary();
+		return size;
+	}
+
 	const char *end = header + size;
 
 	char name[64];
@@ -720,10 +750,10 @@ CurlInputStream::InitEasy(Error &error)
 			 input_curl_writefunction);
 	curl_easy_setopt(easy, CURLOPT_WRITEDATA, this);
 	curl_easy_setopt(easy, CURLOPT_HTTP200ALIASES, http_200_aliases);
-	curl_easy_setopt(easy, CURLOPT_FOLLOWLOCATION, 1);
-	curl_easy_setopt(easy, CURLOPT_NETRC, 1);
-	curl_easy_setopt(easy, CURLOPT_MAXREDIRS, 5);
-	curl_easy_setopt(easy, CURLOPT_FAILONERROR, true);
+	curl_easy_setopt(easy, CURLOPT_FOLLOWLOCATION, 1l);
+	curl_easy_setopt(easy, CURLOPT_NETRC, 1l);
+	curl_easy_setopt(easy, CURLOPT_MAXREDIRS, 5l);
+	curl_easy_setopt(easy, CURLOPT_FAILONERROR, 1l);
 	curl_easy_setopt(easy, CURLOPT_ERRORBUFFER, error_buffer);
 	curl_easy_setopt(easy, CURLOPT_NOPROGRESS, 1l);
 	curl_easy_setopt(easy, CURLOPT_NOSIGNAL, 1l);

src/lib/upnp/ContentDirectoryService.cxx

@@ -29,7 +29,7 @@
 
 ContentDirectoryService::ContentDirectoryService(const UPnPDevice &device,
 						 const UPnPService &service)
-	:m_actionURL(uri_apply_base(device.URLBase, service.controlURL)),
+	:m_actionURL(uri_apply_base(service.controlURL, device.URLBase)),
 	 m_serviceType(service.serviceType),
 	 m_deviceId(device.UDN),
 	 m_friendlyName(device.friendlyName),

src/lib/upnp/Discovery.cxx

@@ -26,6 +26,7 @@
 
 #include <upnp/upnptools.h>
 
+#include <stdlib.h>
 #include <string.h>
 
 // The service type string we are looking for.

src/output/Internal.hxx

@@ -383,7 +383,12 @@ private:
 	void Reopen();
 
 	AudioFormat OpenFilter(AudioFormat &format, Error &error_r);
+
+	/**
+	 * Mutex must not be locked.
+	 */
 	void CloseFilter();
+
 	void ReopenFilter();
 
 	/**

src/output/OutputThread.cxx

@@ -22,6 +22,7 @@
 #include "OutputAPI.hxx"
 #include "Domain.hxx"
 #include "pcm/PcmMix.hxx"
+#include "pcm/Domain.hxx"
 #include "notify.hxx"
 #include "filter/FilterInternal.hxx"
 #include "filter/plugins/ConvertFilterPlugin.hxx"
@@ -165,6 +166,10 @@ AudioOutput::Open()
 	out_audio_format.ApplyMask(config_audio_format);
 
 	mutex.unlock();
+
+	const AudioFormat retry_audio_format = out_audio_format;
+
+ retry_without_dsd:
 	success = ao_plugin_open(this, out_audio_format, error);
 	mutex.lock();
 
@@ -174,7 +179,10 @@ AudioOutput::Open()
 		FormatError(error, "Failed to open \"%s\" [%s]",
 			    name, plugin.name);
 
+		mutex.unlock();
 		CloseFilter();
+		mutex.lock();
+
 		fail_timer.Update();
 		return;
 	}
@@ -184,7 +192,36 @@ AudioOutput::Open()
 		FormatError(error, "Failed to convert for \"%s\" [%s]",
 			    name, plugin.name);
 
+		mutex.unlock();
+		ao_plugin_close(this);
+
+		if (error.IsDomain(pcm_domain) &&
+		    out_audio_format.format == SampleFormat::DSD) {
+			/* if the audio output supports DSD, but not
+			   the given sample rate, it asks MPD to
+			   resample; resampling DSD however is not
+			   implemented; our last resort is to give up
+			   DSD and fall back to PCM */
+
+			// TODO: clean up this workaround
+
+			FormatError(output_domain, "Retrying without DSD");
+
+			out_audio_format = retry_audio_format;
+			out_audio_format.format = SampleFormat::FLOAT;
+
+			/* clear the Error to allow reusing it */
+			error.Clear();
+
+			/* sorry for the "goto" - this is a workaround
+			   for the stable branch that should be as
+			   unintrusive as possible */
+			goto retry_without_dsd;
+		}
+
 		CloseFilter();
+		mutex.lock();
+
 		fail_timer.Update();
 		return;
 	}
@@ -233,7 +270,10 @@ AudioOutput::ReopenFilter()
 {
 	Error error;
 
+	mutex.unlock();
 	CloseFilter();
+	mutex.lock();
+
 	const AudioFormat filter_audio_format =
 		OpenFilter(in_audio_format, error);
 	if (!filter_audio_format.IsDefined() ||

src/output/plugins/RoarOutputPlugin.cxx

@@ -46,7 +46,7 @@ class RoarOutput {
 	struct roar_connection con;
 	struct roar_audio_info info;
 	mutable Mutex mutex;
-	volatile bool alive;
+	bool alive;
 
 public:
 	RoarOutput()

src/pcm/ChannelsConverter.cxx

@@ -43,7 +43,7 @@ PcmChannelsConverter::Open(SampleFormat _format,
 	default:
 		error.Format(pcm_domain,
 			     "PCM channel conversion for %s is not implemented",
-			     sample_format_to_string(format));
+			     sample_format_to_string(_format));
 		return false;
 	}
 

src/pcm/FormatConverter.cxx

@@ -28,11 +28,31 @@
 
 bool
 PcmFormatConverter::Open(SampleFormat _src_format, SampleFormat _dest_format,
-			 gcc_unused Error &error)
+			 Error &error)
 {
 	assert(_src_format != SampleFormat::UNDEFINED);
 	assert(_dest_format != SampleFormat::UNDEFINED);
 
+	switch (_dest_format) {
+	case SampleFormat::UNDEFINED:
+		assert(false);
+		gcc_unreachable();
+
+	case SampleFormat::S8:
+	case SampleFormat::DSD:
+		error.Format(pcm_domain,
+			     "PCM conversion from %s to %s is not implemented",
+			     sample_format_to_string(_src_format),
+			     sample_format_to_string(_dest_format));
+		return nullptr;
+
+	case SampleFormat::S16:
+	case SampleFormat::S24_P32:
+	case SampleFormat::S32:
+	case SampleFormat::FLOAT:
+		break;
+	}
+
 	src_format = _src_format;
 	dest_format = _dest_format;
 	return true;
@@ -48,20 +68,14 @@ PcmFormatConverter::Close()
 }
 
 ConstBuffer<void>
-PcmFormatConverter::Convert(ConstBuffer<void> src, Error &error)
+PcmFormatConverter::Convert(ConstBuffer<void> src, gcc_unused Error &error)
 {
 	switch (dest_format) {
 	case SampleFormat::UNDEFINED:
-		assert(false);
-		gcc_unreachable();
-
 	case SampleFormat::S8:
 	case SampleFormat::DSD:
-		error.Format(pcm_domain,
-			     "PCM conversion from %s to %s is not implemented",
-			     sample_format_to_string(src_format),
-			     sample_format_to_string(dest_format));
-		return nullptr;
+		assert(false);
+		gcc_unreachable();
 
 	case SampleFormat::S16:
 		return pcm_convert_to_16(buffer, dither,

src/pcm/PcmConvert.cxx

@@ -51,7 +51,7 @@ PcmConvert::~PcmConvert()
 }
 
 bool
-PcmConvert::Open(AudioFormat _src_format, AudioFormat _dest_format,
+PcmConvert::Open(const AudioFormat _src_format, const AudioFormat _dest_format,
 		 Error &error)
 {
 	assert(!src_format.IsValid());
@@ -59,36 +59,34 @@ PcmConvert::Open(AudioFormat _src_format, AudioFormat _dest_format,
 	assert(_src_format.IsValid());
 	assert(_dest_format.IsValid());
 
-	src_format = _src_format;
-	dest_format = _dest_format;
-
-	AudioFormat format = src_format;
+	AudioFormat format = _src_format;
 	if (format.format == SampleFormat::DSD)
 		format.format = SampleFormat::FLOAT;
 
-	enable_resampler = format.sample_rate != dest_format.sample_rate;
+	enable_resampler = format.sample_rate != _dest_format.sample_rate;
 	if (enable_resampler) {
-		if (!resampler.Open(format, dest_format.sample_rate, error))
+		if (!resampler.Open(format, _dest_format.sample_rate, error))
 			return false;
 
 		format.format = resampler.GetOutputSampleFormat();
-		format.sample_rate = dest_format.sample_rate;
+		format.sample_rate = _dest_format.sample_rate;
 	}
 
-	enable_format = format.format != dest_format.format;
+	enable_format = format.format != _dest_format.format;
 	if (enable_format &&
-	    !format_converter.Open(format.format, dest_format.format, error)) {
+	    !format_converter.Open(format.format, _dest_format.format,
+				   error)) {
 		if (enable_resampler)
 			resampler.Close();
 		return false;
 	}
 
-	format.format = dest_format.format;
+	format.format = _dest_format.format;
 
-	enable_channels = format.channels != dest_format.channels;
+	enable_channels = format.channels != _dest_format.channels;
 	if (enable_channels &&
 	    !channels_converter.Open(format.format, format.channels,
-				     dest_format.channels, error)) {
+				     _dest_format.channels, error)) {
 		if (enable_format)
 			format_converter.Close();
 		if (enable_resampler)
@@ -96,6 +94,9 @@ PcmConvert::Open(AudioFormat _src_format, AudioFormat _dest_format,
 		return false;
 	}
 
+	src_format = _src_format;
+	dest_format = _dest_format;
+
 	return true;
 }
 

src/pcm/SoxrResampler.cxx

@@ -147,7 +147,8 @@ SoxrPcmResampler::Resample(ConstBuffer<void> src, Error &error)
 
 	const size_t n_frames = src.size / frame_size;
 
-	const size_t o_frames = size_t(n_frames * ratio + 0.5);
+	/* always round up: worst case output buffer size */
+	const size_t o_frames = size_t(n_frames * ratio) + 1;
 
 	float *output_buffer = (float *)buffer.Get(o_frames * frame_size);
 

src/playlist/PlaylistRegistry.cxx

@@ -139,12 +139,12 @@ static SongEnumerator *
 playlist_list_open_uri_suffix(const char *uri, Mutex &mutex, Cond &cond,
 			      const bool *tried)
 {
-	const char *suffix;
 	SongEnumerator *playlist = nullptr;
 
 	assert(uri != nullptr);
 
-	suffix = uri_get_suffix(uri);
+	UriSuffixBuffer suffix_buffer;
+	const char *const suffix = uri_get_suffix(uri, suffix_buffer);
 	if (suffix == nullptr)
 		return nullptr;
 
@@ -257,7 +257,10 @@ playlist_list_open_stream(InputStream &is, const char *uri)
 			return playlist;
 	}
 
-	const char *suffix = uri != nullptr ? uri_get_suffix(uri) : nullptr;
+	UriSuffixBuffer suffix_buffer;
+	const char *suffix = uri != nullptr
+		? uri_get_suffix(uri, suffix_buffer)
+		: nullptr;
 	if (suffix != nullptr) {
 		auto playlist = playlist_list_open_stream_suffix(is, suffix);
 		if (playlist != nullptr)

src/playlist/plugins/ExtM3uPlaylistPlugin.cxx

@@ -130,6 +130,7 @@ ExtM3uPlaylist::NextSong()
 
 static const char *const extm3u_suffixes[] = {
 	"m3u",
+	"m3u8",
 	nullptr
 };
 

src/playlist/plugins/M3uPlaylistPlugin.cxx

@@ -60,6 +60,7 @@ M3uPlaylist::NextSong()
 
 static const char *const m3u_suffixes[] = {
 	"m3u",
+	"m3u8",
 	nullptr
 };
 

src/tag/Set.cxx

@@ -19,6 +19,7 @@
 
 #include "Set.hxx"
 #include "TagBuilder.hxx"
+#include "TagSettings.h"
 
 #include <assert.h>
 
@@ -109,6 +110,7 @@ TagSet::InsertUnique(const Tag &tag,
 
 	if (!CheckUnique(type, tag, type, group_mask) &&
 	    (type != TAG_ALBUM_ARTIST ||
+	     ignore_tag_items[TAG_ALBUM_ARTIST] ||
 	     /* fall back to "Artist" if no "AlbumArtist" was found */
 	     !CheckUnique(type, tag, TAG_ARTIST, group_mask)))
 		InsertUnique(tag, type, nullptr, group_mask);

src/util/UriUtil.cxx

@@ -54,6 +54,23 @@ uri_get_suffix(const char *uri)
 	return suffix;
 }
 
+const char *
+uri_get_suffix(const char *uri, UriSuffixBuffer &buffer)
+{
+	const char *suffix = uri_get_suffix(uri);
+	if (suffix == nullptr)
+		return nullptr;
+
+	const char *q = strchr(suffix, '?');
+	if (q != nullptr && size_t(q - suffix) < sizeof(buffer.data)) {
+		memcpy(buffer.data, suffix, q - suffix);
+		buffer.data[q - suffix] = 0;
+		suffix = buffer.data;
+	}
+
+	return suffix;
+}
+
 static const char *
 verify_uri_segment(const char *p)
 {

src/util/UriUtil.hxx

@@ -42,6 +42,17 @@ gcc_pure
 const char *
 uri_get_suffix(const char *uri);
 
+struct UriSuffixBuffer {
+	char data[8];
+};
+
+/**
+ * Returns the file name suffix, ignoring the query string.
+ */
+gcc_pure
+const char *
+uri_get_suffix(const char *uri, UriSuffixBuffer &buffer);
+
 /**
  * Returns true if this is a safe "local" URI:
  *

test/DumpDatabase.cxx

@@ -33,7 +33,9 @@
 #include "event/Loop.hxx"
 #include "util/Error.hxx"
 
+#ifdef HAVE_GLIB
 #include <glib.h>
+#endif
 
 #include <iostream>
 using std::cout;
@@ -107,8 +109,10 @@ main(int argc, char **argv)
 
 	/* initialize GLib */
 
+#ifdef HAVE_GLIB
 #if !GLIB_CHECK_VERSION(2,32,0)
 	g_thread_init(nullptr);
+#endif
 #endif
 
 	/* initialize MPD */

test/FakeDecoderAPI.cxx

@@ -132,6 +132,12 @@ decoder_data(gcc_unused Decoder &decoder,
 	     const void *data, size_t datalen,
 	     gcc_unused uint16_t kbit_rate)
 {
+	static uint16_t prev_kbit_rate;
+	if (kbit_rate != prev_kbit_rate) {
+		prev_kbit_rate = kbit_rate;
+		fprintf(stderr, "%u kbit/s\n", kbit_rate);
+	}
+
 	gcc_unused ssize_t nbytes = write(1, data, datalen);
 	return DecoderCommand::NONE;
 }

test/read_mixer.cxx

@@ -28,7 +28,9 @@
 #include "util/Error.hxx"
 #include "Log.hxx"
 
+#ifdef HAVE_GLIB
 #include <glib.h>
+#endif
 
 #include <assert.h>
 #include <string.h>
@@ -50,8 +52,10 @@ int main(int argc, gcc_unused char **argv)
 		return EXIT_FAILURE;
 	}
 
+#ifdef HAVE_GLIB
 #if !GLIB_CHECK_VERSION(2,32,0)
 	g_thread_init(NULL);
+#endif
 #endif
 
 	EventLoop event_loop;

test/test_archive.cxx

@@ -7,8 +7,6 @@
 #include <cppunit/ui/text/TestRunner.h>
 #include <cppunit/extensions/HelperMacros.h>
 
-#include <glib.h>
-
 #include <string.h>
 #include <stdlib.h>
 
@@ -29,22 +27,22 @@ ArchiveLookupTest::TestArchiveLookup()
 	char *path = strdup("");
 	CPPUNIT_ASSERT_EQUAL(false,
 			     archive_lookup(path, &archive, &inpath, &suffix));
-	g_free(path);
+	free(path);
 
 	path = strdup(".");
 	CPPUNIT_ASSERT_EQUAL(false,
 			     archive_lookup(path, &archive, &inpath, &suffix));
-	g_free(path);
+	free(path);
 
 	path = strdup("config.h");
 	CPPUNIT_ASSERT_EQUAL(false,
 			     archive_lookup(path, &archive, &inpath, &suffix));
-	g_free(path);
+	free(path);
 
 	path = strdup("src/foo/bar");
 	CPPUNIT_ASSERT_EQUAL(false,
 			     archive_lookup(path, &archive, &inpath, &suffix));
-	g_free(path);
+	free(path);
 
 	path = strdup("Makefile/foo/bar");
 	CPPUNIT_ASSERT_EQUAL(true,
@@ -53,7 +51,7 @@ ArchiveLookupTest::TestArchiveLookup()
 	CPPUNIT_ASSERT_EQUAL(0, strcmp(archive, "Makefile"));
 	CPPUNIT_ASSERT_EQUAL(0, strcmp(inpath, "foo/bar"));
 	CPPUNIT_ASSERT_EQUAL((const char *)nullptr, suffix);
-	g_free(path);
+	free(path);
 
 	path = strdup("config.h/foo/bar");
 	CPPUNIT_ASSERT_EQUAL(true,
@@ -62,7 +60,7 @@ ArchiveLookupTest::TestArchiveLookup()
 	CPPUNIT_ASSERT_EQUAL(0, strcmp(archive, "config.h"));
 	CPPUNIT_ASSERT_EQUAL(0, strcmp(inpath, "foo/bar"));
 	CPPUNIT_ASSERT_EQUAL(0, strcmp(suffix, "h"));
-	g_free(path);
+	free(path);
 }
 
 CPPUNIT_TEST_SUITE_REGISTRATION(ArchiveLookupTest);

test/test_util.cxx

@@ -34,6 +34,25 @@ public:
 				     uri_get_suffix(".jpg"));
 		CPPUNIT_ASSERT_EQUAL((const char *)nullptr,
 				     uri_get_suffix("/foo/.jpg"));
+
+		/* the first overload does not eliminate the query
+		   string */
+		CPPUNIT_ASSERT_EQUAL(0, strcmp(uri_get_suffix("/foo/bar.jpg?query_string"),
+					       "jpg?query_string"));
+
+		/* ... but the second one does */
+		UriSuffixBuffer buffer;
+		CPPUNIT_ASSERT_EQUAL(0, strcmp(uri_get_suffix("/foo/bar.jpg?query_string",
+							      buffer),
+					       "jpg"));
+
+		/* repeat some of the above tests with the second overload */
+		CPPUNIT_ASSERT_EQUAL((const char *)nullptr,
+				     uri_get_suffix("/foo/bar", buffer));
+		CPPUNIT_ASSERT_EQUAL((const char *)nullptr,
+				     uri_get_suffix("/foo.jpg/bar", buffer));
+		CPPUNIT_ASSERT_EQUAL(0, strcmp(uri_get_suffix("/foo/bar.jpg", buffer),
+					       "jpg"));
 	}
 
 	void TestRemoveAuth() {

test/visit_archive.cxx

@@ -30,7 +30,9 @@
 #include "fs/Path.hxx"
 #include "util/Error.hxx"
 
+#ifdef HAVE_GLIB
 #include <glib.h>
+#endif
 
 #include <unistd.h>
 #include <stdlib.h>
@@ -57,8 +59,10 @@ main(int argc, char **argv)
 
 	/* initialize GLib */
 
+#ifdef HAVE_GLIB
 #if !GLIB_CHECK_VERSION(2,32,0)
 	g_thread_init(NULL);
+#endif
 #endif
 
 	/* initialize MPD */