release v0.19.12

These are other popular clients. In particular, VLC is available on
mobile devices.

Signed-off-by: Ben Boeckel <mathstuf@gmail.com>

.gitignore

@@ -77,6 +77,8 @@ tags
 /test/test_vorbis_encoder
 /test/DumpDatabase
 
+/lib/
+
 /*.tar.gz
 /*.tar.bz2
 /*.tar.xz

INSTALL

@@ -116,12 +116,6 @@ For WavPack playback.
 libadplug - http://adplug.sourceforge.net/
 For AdLib playback.
 
-despotify - https://github.com/SimonKagstrom/despotify
-For Spotify playback.
-
-MP4v2 - https://code.google.com/p/mp4v2/
-For MP4 playback. You will need FAAD2.
-
 
 Optional Miscellaneous Dependencies
 -----------------------------------

Makefile.am

@@ -28,8 +28,6 @@ noinst_LIBRARIES = \
 	libmixer_plugins.a \
 	liboutput_plugins.a
 
-libmpd_a_DEPENDENCIES =
-
 libmpd_a_CPPFLAGS = $(AM_CPPFLAGS) \
 	$(LIBMPDCLIENT_CFLAGS) \
 	$(AVAHI_CFLAGS) \
@@ -130,7 +128,6 @@ 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 \
@@ -284,13 +281,13 @@ android/build/build.xml: android/AndroidManifest.xml
 	ln -s $(abs_srcdir)/android/res/values android/build/res
 	$(ANDROID_SDK)/tools/android update project --path android/build --target android-17
 
-android/build/bin/classes/org/musicpd/Bridge.class: android/src/Bridge.java android/build/build.xml
+android/build/bin/classes/org/musicpd/Bridge.class: android/src/Bridge.java android/build/build.xml android/build/res/drawable/icon.png
 	cd android/build && ant compile-jni-classes
 
 android/build/include/org_musicpd_Bridge.h: android/build/bin/classes/org/musicpd/Bridge.class
 	javah -classpath $(ANDROID_SDK)/platforms/android-17/android.jar:android/build/bin/classes -d $(@D) org.musicpd.Bridge
 
-libmpd_a_DEPENDENCIES += android/build/include/org_musicpd_Bridge.h
+BUILT_SOURCES = android/build/include/org_musicpd_Bridge.h
 
 android/build/libs/armeabi-v7a/libmpd.so: libmpd.so android/build/build.xml
 	mkdir -p $(@D)
@@ -829,7 +826,6 @@ libdecoder_a_CPPFLAGS = $(AM_CPPFLAGS) \
 	$(WAVPACK_CFLAGS) \
 	$(MAD_CFLAGS) \
 	$(MPG123_CFLAGS) \
-	$(MP4V2_CFLAGS) \
 	$(OPUS_CFLAGS) \
 	$(FFMPEG_CFLAGS) \
 	$(MPCDEC_CFLAGS) \
@@ -849,7 +845,6 @@ DECODER_LIBS = \
 	$(WAVPACK_LIBS) \
 	$(MAD_LIBS) \
 	$(MPG123_LIBS) \
-	$(MP4V2_LIBS) \
 	$(OPUS_LIBS) \
 	$(FFMPEG_LIBS2) \
 	$(MPCDEC_LIBS) \
@@ -964,12 +959,6 @@ noinst_LIBRARIES += libmodplug_decoder_plugin.a
 DECODER_LIBS += libmodplug_decoder_plugin.a $(MODPLUG_LIBS)
 endif
 
-if HAVE_MP4V2
-libdecoder_a_SOURCES += \
-	src/decoder/plugins/Mp4v2DecoderPlugin.cxx \
-	src/decoder/plugins/Mp4v2DecoderPlugin.hxx
-endif
-
 if ENABLE_SIDPLAY
 libdecoder_a_SOURCES += \
 	src/decoder/plugins/SidplayDecoderPlugin.cxx \
@@ -1113,6 +1102,7 @@ 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 \
@@ -1133,7 +1123,6 @@ libinput_a_CPPFLAGS = $(AM_CPPFLAGS) \
 	$(NFS_CFLAGS) \
 	$(CDIO_PARANOIA_CFLAGS) \
 	$(FFMPEG_CFLAGS) \
-	$(DESPOTIFY_CFLAGS) \
 	$(MMS_CFLAGS)
 
 INPUT_LIBS = \
@@ -1143,7 +1132,6 @@ INPUT_LIBS = \
 	$(NFS_LIBS) \
 	$(CDIO_PARANOIA_LIBS) \
 	$(FFMPEG_LIBS2) \
-	$(DESPOTIFY_LIBS) \
 	$(MMS_LIBS)
 
 if HAVE_ALSA
@@ -1189,15 +1177,6 @@ libinput_a_SOURCES += \
 	src/input/plugins/MmsInputPlugin.cxx src/input/plugins/MmsInputPlugin.hxx
 endif
 
-if ENABLE_DESPOTIFY
-libinput_a_SOURCES += \
-	src/lib/despotify/DespotifyUtils.cxx \
-	src/lib/despotify/DespotifyUtils.hxx \
-	src/input/plugins/DespotifyInputPlugin.cxx \
-	src/input/plugins/DespotifyInputPlugin.hxx
-endif
-
-
 liboutput_plugins_a_CPPFLAGS = $(AM_CPPFLAGS) \
 	$(AO_CFLAGS) \
 	$(ALSA_CFLAGS) \
@@ -1240,6 +1219,7 @@ liboutput_plugins_a_SOURCES = \
 
 MIXER_LIBS = \
 	libmixer_plugins.a \
+	$(ALSA_LIBS) \
 	$(PULSE_LIBS)
 
 MIXER_API_SRC = \
@@ -1402,14 +1382,6 @@ PLAYLIST_LIBS = \
 	$(EXPAT_LIBS) \
 	$(FLAC_LIBS)
 
-if ENABLE_DESPOTIFY
-libplaylist_plugins_a_SOURCES += \
-	src/lib/despotify/DespotifyUtils.cxx \
-	src/lib/despotify/DespotifyUtils.hxx \
-       src/playlist/plugins/DespotifyPlaylistPlugin.cxx \
-       src/playlist/plugins/DespotifyPlaylistPlugin.hxx
-endif
-
 if ENABLE_SOUNDCLOUD
 libplaylist_plugins_a_SOURCES += \
 	src/playlist/plugins/SoundCloudPlaylistPlugin.cxx \
@@ -1646,12 +1618,6 @@ if HAVE_LIBUPNP
 test_run_neighbor_explorer_SOURCES += src/lib/expat/ExpatParser.cxx
 endif
 
-if ENABLE_DESPOTIFY
-test_run_neighbor_explorer_SOURCES += \
-	src/lib/despotify/DespotifyUtils.cxx \
-	src/lib/despotify/DespotifyUtils.hxx
-endif
-
 endif
 
 if ENABLE_ARCHIVE
@@ -2141,19 +2107,11 @@ 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) $<
@@ -2194,4 +2152,12 @@ EXTRA_DIST = $(doc_DATA) autogen.sh \
 	test/test_archive_zzip.sh \
 	$(wildcard scripts/*.sh) \
 	$(man_MANS) $(DOCBOOK_FILES) doc/mpdconf.example doc/doxygen.conf \
+	systemd/mpd.socket \
+	android/AndroidManifest.xml \
+	android/build.py \
+	android/custom_rules.xml \
+	android/res/values/strings.xml \
+	android/src/Bridge.java \
+	android/src/Loader.java \
+	android/src/Main.java \
 	src/win32/mpd_win32_rc.rc.in src/win32/mpd.ico

NEWS

@@ -1,3 +1,141 @@
+ver 0.19.12 (2015/12/15)
+* fix assertion failure on malformed UTF-8 tag
+* fix build failure on non-Linux systems
+* fix LimitRTTIME in systemd unit file
+
+ver 0.19.11 (2015/10/27)
+* tags
+  - ape: fix buffer overflow
+* decoder
+  - ffmpeg: fix crash due to wrong avio_alloc_context() call
+  - gme: don't loop forever, fall back to GME's default play length
+* encoder
+  - flac: fix crash with 32 bit playback
+* mixer
+  - fix mixer lag after enabling/disabling output
+
+ver 0.19.10 (2015/06/21)
+* input
+  - curl: fix deadlock on small responses
+  - smbclient: fix DFF playback
+* decoder
+  - ffmpeg: improve seeking accuracy
+  - fix stuck stream tags
+* encoder
+  - opus: fix bogus granulepos
+* output
+  - fix failure to open device right after booting
+* neighbor
+  - nfs: fix deadlock when connecting
+* fix "single" mode breakage due to queue edits
+
+ver 0.19.9 (2015/02/06)
+* decoder
+  - dsdiff, dsf: raise ID3 tag limit to 1 MB
+* playlist: fix loading duplicate tag types from state file
+* despotify: remove defunct plugin
+* fix clock integer overflow on OS X
+* fix gcc 5.0 warnings
+* fix build failure with uClibc
+* fix build failure on non-POSIX operating systems
+* fix dependency issue on parallel Android build
+* fix database/state file saving on Windows
+
+ver 0.19.8 (2015/01/14)
+* input
+  - curl: fix bug after rewinding from end-of-file
+  - mms: reduce delay at the beginning of playback
+* decoder
+  - dsdiff, dsf: allow ID3 tags larger than 4 kB
+  - ffmpeg: support interleaved floating point
+* fix clang 3.6 warnings
+* fix build failure on NetBSD
+
+ver 0.19.7 (2014/12/17)
+* input
+  - nfs: fix crash while canceling a failing file open operation
+  - nfs: fix memory leak on connection failure
+  - nfs: fix reconnect after mount failure
+  - nfs: implement mount timeout (60 seconds)
+* storage
+  - nfs: implement I/O timeout (60 seconds)
+* playlist
+  - embcue: fix filename suffix detection
+  - don't skip non-existent songs in "listplaylist"
+* decoder
+  - ffmpeg: fix time stamp underflow
+* fix memory allocator bug on Windows
+
+ver 0.19.6 (2014/12/08)
+* decoder
+  - ffmpeg: support FFmpeg 2.5
+* fix build failure with musl
+* android
+  - update libFLAC to 1.3.1
+  - update FFmpeg to 2.5
+
+ver 0.19.5 (2014/11/26)
+* input
+  - nfs: fix crash on connection failure
+* archive
+  - zzip: fix crash after seeking
+* decoder
+  - dsdiff, dsf, opus: fix deadlock while seeking
+  - mp4v2: remove because of incompatible license
+
+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
+* playlist
+  - extm3u: fix Extended M3U detection
+  - m3u, extm3u, cue: fix truncated lines
+* fix build failure on Mac OS X
+* add missing file systemd/mpd.socket to tarball
+
 ver 0.19 (2014/10/10)
 * protocol
   - new commands "addtagid", "cleartagid", "listfiles", "listmounts",
@@ -76,6 +214,44 @@ ver 0.19 (2014/10/10)
 * install systemd unit for socket activation
 * Android port
 
+ver 0.18.23 (2015/02/06)
+* despotify: remove defunct plugin
+* fix clock integer overflow on OS X
+* fix gcc 5.0 warnings
+
+ver 0.18.22 (2015/01/14)
+* fix clang 3.6 warnings
+
+ver 0.18.21 (2014/12/17)
+* playlist
+  - embcue: fix filename suffix detection
+* decoder
+  - ffmpeg: fix time stamp underflow
+
+ver 0.18.20 (2014/12/08)
+* decoder
+  - ffmpeg: support FFmpeg 2.5
+* fix build failure with musl
+
+ver 0.18.19 (2014/11/26)
+* archive
+  - zzip: fix crash after seeking
+
+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
 

android/AndroidManifest.xml

@@ -2,8 +2,8 @@
 <manifest xmlns:android="http://schemas.android.com/apk/res/android"
           package="org.musicpd"
           android:installLocation="auto"
-          android:versionCode="6"
-          android:versionName="0.19">
+          android:versionCode="13"
+          android:versionName="0.19.9">
 
   <uses-sdk android:minSdkVersion="9" android:targetSdkVersion="17"/>
 

android/build.py

@@ -23,7 +23,7 @@ if not os.path.isdir(ndk_path):
     sys.exit(1)
 
 # the path to the MPD sources
-mpd_path = os.path.dirname(os.path.dirname(sys.argv[0]))
+mpd_path = os.path.abspath(os.path.join(os.path.dirname(sys.argv[0]) or '.', '..'))
 
 # output directories
 lib_path = os.path.abspath('lib')
@@ -40,8 +40,8 @@ build_arch = 'linux-x86_64'
 os.environ['PKG_CONFIG_LIBDIR'] = os.path.join(root_path, 'lib/pkgconfig')
 
 # select the NDK compiler
-gcc_version = '4.8'
-llvm_version = '3.3'
+gcc_version = '4.9'
+llvm_version = '3.5'
 
 # select the NDK target
 ndk_arch = 'arm'
@@ -314,8 +314,8 @@ thirdparty_libs = [
     ),
 
     AutotoolsProject(
-        'https://svn.xiph.org/releases/flac/flac-1.3.0.tar.xz',
-        '13b5c214cee8373464d3d65dee362cdd',
+        'http://downloads.xiph.org/releases/flac/flac-1.3.1.tar.xz',
+        'b9922c9a0378c88d3e901b234f852698',
         'lib/libFLAC.a',
         [
             '--disable-shared', '--enable-static',
@@ -341,8 +341,8 @@ thirdparty_libs = [
     ),
 
     FfmpegProject(
-        'http://www.ffmpeg.org/releases/ffmpeg-2.2.3.tar.bz2',
-        'dbb5b6b69bd010916f17df0ae596e0b1',
+        'http://ffmpeg.org/releases/ffmpeg-2.5.tar.bz2',
+        '4346fe710cc6bdd981f6534d2420d1ab',
         'lib/libavcodec.a',
         [
             '--disable-shared', '--enable-static',
@@ -366,8 +366,8 @@ thirdparty_libs = [
     ),
 
     AutotoolsProject(
-        'http://curl.haxx.se/download/curl-7.37.0.tar.lzma',
-        '54bfd1eb5214f604186d6f5ac61c7781',
+        'http://curl.haxx.se/download/curl-7.39.0.tar.lzma',
+        'e9aa6dec29920eba8ef706ea5823bad7',
         'lib/libcurl.a',
         [
             '--disable-shared', '--enable-static',

configure.ac

@@ -1,10 +1,10 @@
 AC_PREREQ(2.60)
 
-AC_INIT(mpd, 0.19, musicpd-dev-team@lists.sourceforge.net)
+AC_INIT(mpd, 0.19.12, musicpd-dev-team@lists.sourceforge.net)
 
 VERSION_MAJOR=0
 VERSION_MINOR=19
-VERSION_REVISION=0
+VERSION_REVISION=12
 VERSION_EXTRA=0
 
 AC_CONFIG_SRCDIR([src/Main.cxx])
@@ -206,6 +206,7 @@ if test x$host_is_linux = xyes; then
 fi
 
 AC_CHECK_FUNCS(getpwnam_r getpwuid_r)
+AC_CHECK_FUNCS(strndup)
 
 if test x$host_is_linux = xyes; then
 	MPD_OPTIONAL_FUNC(eventfd, eventfd, USE_EVENTFD)
@@ -293,7 +294,9 @@ fi
 AC_ARG_ENABLE(libmpdclient,
 	AS_HELP_STRING([--enable-libmpdclient],
 		[enable support for the MPD client]),,
-	enable_libmpdclient=$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 +306,9 @@ 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 +328,8 @@ 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 +350,8 @@ 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 +407,15 @@ 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],
@@ -428,18 +441,17 @@ 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
 
-AC_ARG_ENABLE(despotify,
-	AS_HELP_STRING([--enable-despotify],
-		[enable support for despotify (default: disable)]),,
-	[enable_despotify=no])
-
 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],
@@ -480,11 +492,6 @@ AC_ARG_ENABLE(modplug,
 		[enable modplug decoder plugin]),,
 	enable_modplug=auto)
 
-AC_ARG_ENABLE(mp4v2,
-	AS_HELP_STRING([--enable-mp4v2],
-		[enable libmp4v2 decoder plugin]),,
-	enable_mp4v2=auto)
-
 AC_ARG_ENABLE(mpc,
 	AS_HELP_STRING([--enable-mpc],
 		[disable musepack (MPC) support (default: auto)]),,
@@ -534,6 +541,8 @@ 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 +568,8 @@ 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 +610,8 @@ 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 +622,8 @@ 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],
@@ -960,14 +975,6 @@ if test x$enable_nfs = xyes; then
 fi
 AM_CONDITIONAL(ENABLE_NFS, test x$enable_nfs = xyes)
 
-dnl --------------------------------- Despotify ---------------------------------
-MPD_AUTO_PKG(despotify, DESPOTIFY, [despotify],
-	[Despotify support], [despotify not found])
-if test x$enable_despotify = xyes; then
-	AC_DEFINE(ENABLE_DESPOTIFY, 1, [Define when despotify is enabled])
-fi
-AM_CONDITIONAL(ENABLE_DESPOTIFY, test x$enable_despotify = xyes)
-
 dnl --------------------------------- Soundcloud ------------------------------
 if test x$enable_soundcloud != xno; then
 	PKG_CHECK_MODULES([YAJL], [yajl >= 2.0],
@@ -1240,24 +1247,6 @@ if test x$enable_modplug = xyes; then
 fi
 AM_CONDITIONAL(HAVE_MODPLUG, test x$enable_modplug = xyes)
 
-dnl -------------------------------- libmp4v2 ---------------------------------
-if test x$enable_aac = xyes; then
-        MPD_AUTO_LIB(mp4v2, MP4V2, mp4v2, MP4Create, [-lmp4v2], [],
-	                    [mp4v2], [libmp4v2 not found])
-
-        if test x$enable_mp4v2 = xyes; then
-	        AC_DEFINE(HAVE_MP4V2, 1, [Define to use libmp4v2 for MP4 decoding])
-        fi
-else
-     if test x$enable_mp4v2 = xyes; then
-        AC_MSG_ERROR([MP4V2 requires AAC!])
-     fi
-
-     enable_mp4v2=no
-fi
-
-AM_CONDITIONAL(HAVE_MP4V2, test x$enable_mp4v2 = xyes)
-
 dnl -------------------------------- libopus ----------------------------------
 MPD_AUTO_PKG(opus, OPUS, [opus ogg],
 	[opus decoder plugin], [libopus not found])
@@ -1709,8 +1698,11 @@ 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$DOXYGEN = x; then
@@ -1718,8 +1710,6 @@ if test x$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 +1816,14 @@ 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])
@@ -1838,7 +1833,6 @@ printf '\n\t'
 results(sndfile, [libsndfile])
 results(mikmod, [MikMod])
 results(modplug, [MODPLUG])
-results(mp4v2, [MP4V2])
 results(mad, [MAD])
 results(mpg123, [MPG123])
 results(mpc, [Musepack])
@@ -1897,7 +1891,6 @@ printf '\nStreaming support:\n\t'
 results(cdio_paranoia, [CDIO_PARANOIA])
 results(curl,[CURL])
 results(smbclient,[SMBCLIENT])
-results(despotify,[Despotify])
 results(soundcloud,[Soundcloud])
 printf '\n\t'
 results(mms,[MMS])

doc/mpd.conf.5

@@ -195,16 +195,6 @@ of database.
 Limit the depth of the directories being watched, 0 means only watch
 the music directory itself.  There is no limit by default.
 .TP
-.B despotify_user <name>
-This specifies the user to use when logging in to Spotify using the despotify plugins.
-.TP
-.B despotify_password <name>
-This specifies the password to use when logging in to Spotify using the despotify plugins.
-.TP
-.B despotify_high_bitrate <yes or no>
-This specifies if the requested bitrate for Spotify should be high or not. Higher sounds
-better but requires more processing and higher bandwidth. Default is yes.
-.TP
 .SH REQUIRED AUDIO OUTPUT PARAMETERS
 .TP
 .B type <type>

doc/protocol.xml

@@ -1141,7 +1141,7 @@ OK
           </term>
           <listitem>
             <para>
-              Searches case-sensitively for partial matches in the
+              Searches case-insensitively for partial matches in the
               current playlist.
             </para>
           </listitem>
@@ -1533,6 +1533,7 @@ OK
               <command>count</command>
               <arg choice="req"><replaceable>TAG</replaceable></arg>
               <arg choice="req"><replaceable>NEEDLE</replaceable></arg>
+              <arg choice="opt"><replaceable>...</replaceable></arg>
               <arg choice="opt">group</arg>
               <arg choice="opt"><replaceable>GROUPTYPE</replaceable></arg>
             </cmdsynopsis>

doc/user.xml

@@ -89,7 +89,7 @@ cd mpd-version</programlisting>
       </para>
 
       <programlisting>
-apt-get install g++ automake autoconf \
+apt-get install g++ \
   libmad0-dev libmpg123-dev libid3tag0-dev \
   libflac-dev libvorbis-dev libopus-dev \
   libadplug-dev libaudiofile-dev libsndfile1-dev libfaad-dev \
@@ -98,19 +98,21 @@ apt-get install g++ automake autoconf \
   libsidplay2-dev libsidutils-dev libresid-builder-dev \
   libavcodec-dev libavformat-dev \
   libmp3lame-dev \
-  libsamplerate0-dev \
+  libsamplerate0-dev libsoxr-dev \
   libbz2-dev libcdio-paranoia-dev libiso9660-dev libmms-dev \
   libzzip-dev \
-  libcurl4-gnutls-dev libyajl-dev \
+  libcurl4-gnutls-dev libyajl-dev libexpat-dev \
   libasound2-dev libao-dev libjack-jackd2-dev libopenal-dev \
   libpulse-dev libroar-dev libshout3-dev \
   libmpdclient-dev \
+  libnfs-dev libsmbclient-dev \
+  libupnp-dev \
   libavahi-client-dev \
   libsqlite3-dev \
   libsystemd-daemon-dev libwrap0-dev \
   libcppunit-dev xmlto \
   libboost-dev \
-  libglib2.0-dev
+  libglib2.0-dev libicu-dev
       </programlisting>
 
       <para>
@@ -313,9 +315,8 @@ systemctl start mpd.socket</programlisting>
       </para>
 
       <programlisting>input {
-    plugin "despotify"
-    user "foo"
-    password "bar"
+    plugin "curl"
+    proxy "proxy.local"
 }
       </programlisting>
 
@@ -1189,6 +1190,58 @@ database {
         plugin).
       </para>
     </section>
+
+    <section id="realtime">
+      <title>Real-Time Scheduling</title>
+
+      <para>
+        On Linux, <application>MPD</application> attempts to configure
+        <ulink
+        url="https://en.wikipedia.org/wiki/Real-time_computing">real-time
+        scheduling</ulink> for some threads that benefit from it.
+      </para>
+
+      <para>
+        This is only possible you allow <application>MPD</application>
+        to do it.  This privilege is controlled by
+        <varname>RLIMIT_RTPRIO</varname>
+        <varname>RLIMIT_RTTIME</varname>.  You can configure this
+        privilege with <command>ulimit</command> before launching
+        <application>MPD</application>:
+      </para>
+
+      <programlisting>ulimit -HS -r 50; mpd</programlisting>
+
+      <para>
+        Or you can use the <command>prlimit</command> program from the
+        <application>util-linux</application> package:
+      </para>
+
+      <programlisting>prlimit --rtprio=50 --rttime=unlimited mpd</programlisting>
+
+      <para>
+        The <application>systemd</application> service file shipped
+        with <application>MPD</application> comes with this setting.
+      </para>
+
+      <para>
+        This works only if the Linux kernel was compiled with
+        <varname>CONFIG_RT_GROUP_SCHED</varname> disabled.  Use the
+        following command to check this option for your current
+        kernel:
+      </para>
+
+      <programlisting>zgrep ^CONFIG_RT_GROUP_SCHED /proc/config.gz</programlisting>
+
+      <note>
+        <para>
+          There is a rumor that real-time scheduling improves audio
+          quality.  That is not true.  All it does is reduce the
+          probability of skipping (audio buffer xruns) when the
+          computer is under heavy load.
+        </para>
+      </note>
+    </section>
   </chapter>
 
   <chapter id="use">
@@ -1738,66 +1791,6 @@ buffer_size: 16384</programlisting>
         </informaltable>
       </section>
 
-      <section>
-        <title><varname>despotify</varname></title>
-
-        <para>
-          Plays <ulink url="http://www.spotify.com">Spotify</ulink> tracks using the despotify
-          library. The despotify plugin uses a <filename>spt://</filename> URI and a Spotify
-          URL. So for example, you can add a song with:
-        </para>
-        
-        <para>
-          <filename>mpc add spt://spotify:track:5qENVY0YEdZ7fiuOax70x1</filename>
-        </para>
-        
-        <para>
-          You need a Spotify premium account to use this plugin, and you need
-          to setup username and password in the configuration file. The
-          configuration settings are global since the despotify playlist plugin
-          use the same settings.
-        </para>
-
-        <informaltable>
-          <tgroup cols="2">
-            <thead>
-              <row>
-                <entry>Setting</entry>
-                <entry>Description</entry>
-              </row>
-            </thead>
-            <tbody>
-              <row>
-                <entry>
-                  <varname>despotify_user</varname>
-                </entry>
-                <entry>
-                  Sets up the Spotify username (required)
-                </entry>
-              </row>
-              <row>
-                <entry>
-                  <varname>despotify_password</varname>
-                </entry>
-                <entry>
-                  Sets up the Spotify password (required)
-                </entry>
-              </row>
-              <row>
-                <entry>
-                  <varname>despotify_high_bitrate</varname>
-                </entry>
-                <entry>
-                  Set up if high bitrate should be used for Spotify tunes.
-                  High bitrate sounds better but slow systems can have problems
-                  with playback (default yes).
-                </entry>
-              </row>
-            </tbody>
-          </tgroup>
-        </informaltable>
-      </section>
-
       <section>
         <title><varname>file</varname></title>
 
@@ -2654,7 +2647,8 @@ buffer_size: 16384</programlisting>
           / <ulink
           url="http://icecast.org/"><application>IceCast</application></ulink>.
           HTTP streaming clients like
-          <application>mplayer</application> can connect to it.
+          <application>mplayer</application>, <application>VLC</application>,
+          and <application>mpv</application> can connect to it.
         </para>
 
         <para>
@@ -3284,70 +3278,6 @@ buffer_size: 16384</programlisting>
           playlist files.
         </para>
       </section>
-
-      <section>
-        <title><varname>despotify</varname></title>
-
-        <para>
-          Adds <ulink url="http://www.spotify.com/">Spotify</ulink>
-          playlists. Spotify playlists use the <filename>spt://</filename> URI,
-          and a Spotify playlist URL. So for example, you can load a playlist
-          with
-        </para>
-        
-        <para>
-          <filename>mpc load spt://spotify:user:simon.kagstrom:playlist:3SUwkOe5VbVHysZcidEZtH</filename>
-        </para>
-        
-        <para>
-          See the despotify input plugin for configuration options (username
-          and password needs to be setup)
-        </para>
-      </section>
-
-      <section>
-        <title><varname>soundcloud</varname></title>
-
-        <para>
-          Adds <ulink url="https://www.soundcloud.com/">Soundcloud</ulink>
-          playlists. SoundCloud playlists use the <filename>soundcloud://</filename> URI,
-          and with a number of arguments, you may load different playlists with
-        </para>
-
-        <programlisting>
-mpc load soundcloud://track/TRACK_ID
-mpc load soundcloud://playlist/PLAYLIST_ID
-mpc load soundcloud://user/USERNAME
-mpc load soundcloud://search/SEARCH_QUERY
-mpc load soundcloud://url/https://soundcloud.com/ARTIST/TRACK-NAME
-        </programlisting>
-
-        <informaltable>
-          <tgroup cols="2">
-            <thead>
-              <row>
-                <entry>Setting</entry>
-                <entry>Description</entry>
-              </row>
-            </thead>
-            <tbody>
-              <row>
-                <entry>
-                  <varname>apikey</varname>
-                  <parameter>client_id</parameter>
-                </entry>
-                <entry>
-                  User apikey/client_id can override the
-                  <application>MPD</application> token provided by
-                  SoundCloud.
-                </entry>
-              </row>
-            </tbody>
-          </tgroup>
-        </informaltable>
-
-      </section>
-
     </section>
   </chapter>
 </book>

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/Compiler.h

@@ -20,33 +20,45 @@
 #ifndef COMPILER_H
 #define COMPILER_H
 
-#define GCC_CHECK_VERSION(major, minor) \
-  (defined(__GNUC__) &&                                                 \
-   (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor))))
+#define GCC_MAKE_VERSION(major, minor, patchlevel) ((major) * 10000 + (minor) * 100 + patchlevel)
 
 #ifdef __GNUC__
-#define GCC_VERSION (__GNUC__ * 10000 \
-                     + __GNUC_MINOR__ * 100 \
-                     + __GNUC_PATCHLEVEL__)
+#define GCC_VERSION GCC_MAKE_VERSION(__GNUC__, __GNUC_MINOR__, __GNUC_PATCHLEVEL__)
 #else
 #define GCC_VERSION 0
 #endif
 
+#define GCC_CHECK_VERSION(major, minor) \
+	(defined(__GNUC__) && GCC_VERSION >= GCC_MAKE_VERSION(major, minor, 0))
+
+/**
+ * Are we building with gcc (not clang or any other compiler) and a
+ * version older than the specified one?
+ */
+#define GCC_OLDER_THAN(major, minor) \
+	(defined(__GNUC__) && !defined(__clang__) && \
+	 GCC_VERSION < GCC_MAKE_VERSION(major, minor, 0))
+
 #ifdef __clang__
-#  define CLANG_VERSION (__clang_major__ * 10000 \
-			 + __clang_minor__ * 100 \
-			 + __clang_patchlevel__)
+#  define CLANG_VERSION GCC_MAKE_VERSION(__clang_major__, __clang_minor__, __clang_patchlevel__)
 #  if __clang_major__ < 3
 #    error Sorry, your clang version is too old.  You need at least version 3.1.
 #  endif
 #elif defined(__GNUC__)
-#  if !GCC_CHECK_VERSION(4,6)
+#  if GCC_OLDER_THAN(4,6)
 #    error Sorry, your gcc version is too old.  You need at least version 4.6.
 #  endif
 #else
 #  warning Untested compiler.  Use at your own risk!
 #endif
 
+/**
+ * Are we building with the specified version of clang or newer?
+ */
+#define CLANG_CHECK_VERSION(major, minor) \
+	(defined(__clang__) && \
+	 CLANG_VERSION >= GCC_MAKE_VERSION(major, minor, 0))
+
 #if GCC_CHECK_VERSION(4,0)
 
 /* GCC 4.x */
@@ -141,7 +153,7 @@
 #if defined(__cplusplus)
 
 /* support for C++11 "override" was added in gcc 4.7 */
-#if !defined(__clang__) && !GCC_CHECK_VERSION(4,7)
+#if GCC_OLDER_THAN(4,7)
 #define override
 #define final
 #endif

src/Idle.cxx

@@ -76,7 +76,10 @@ idle_get_names(void)
 unsigned
 idle_parse_name(const char *name)
 {
+#if !CLANG_CHECK_VERSION(3,6)
+	/* disabled on clang due to -Wtautological-pointer-compare */
 	assert(name != nullptr);
+#endif
 
 	for (unsigned i = 0; idle_names[i] != nullptr; ++i)
 		if (StringEqualsCaseASCII(name, idle_names[i]))

src/LogBackend.cxx

@@ -194,6 +194,12 @@ FileLog(const Domain &domain, const char *message)
 		domain.GetName(),
 		chomp_length(message), message);
 
+#ifdef WIN32
+	/* force-flush the log file, because setvbuf() does not seem
+	   to have an effect on WIN32 */
+	fflush(stderr);
+#endif
+
 #ifdef HAVE_GLIB
 	g_free(converted);
 #endif

src/LogInit.cxx

@@ -111,6 +111,9 @@ log_early_init(bool verbose)
 #ifdef ANDROID
 	(void)verbose;
 #else
+	/* force stderr to be line-buffered */
+	setvbuf(stderr, nullptr, _IOLBF, 0);
+
 	if (verbose)
 		SetLogThreshold(LogLevel::DEBUG);
 #endif

src/Main.cxx

@@ -54,7 +54,6 @@
 #include "system/FatalError.hxx"
 #include "util/UriUtil.hxx"
 #include "util/Error.hxx"
-#include "util/Domain.hxx"
 #include "thread/Id.hxx"
 #include "thread/Slack.hxx"
 #include "lib/icu/Init.hxx"
@@ -114,13 +113,15 @@
 #include <ws2tcpip.h>
 #endif
 
+#ifdef __BLOCKS__
+#include <dispatch/dispatch.h>
+#endif
+
 #include <limits.h>
 
 static constexpr unsigned DEFAULT_BUFFER_SIZE = 4096;
 static constexpr unsigned DEFAULT_BUFFER_BEFORE_PLAY = 10;
 
-static constexpr Domain main_domain("main");
-
 #ifdef ANDROID
 Context *context;
 #endif
@@ -401,8 +402,6 @@ 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 +409,8 @@ int main(int argc, char *argv[])
 
 #endif
 
+static int mpd_main_after_fork(struct options);
+
 #ifdef ANDROID
 static inline
 #endif
@@ -513,6 +514,27 @@ 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
@@ -608,7 +630,7 @@ int mpd_main(int argc, char *argv[])
 					 config_get_unsigned(CONF_AUTO_UPDATE_DEPTH,
 							     INT_MAX));
 #else
-		FormatWarning(main_domain,
+		FormatWarning(config_domain,
 			      "inotify: auto_update was disabled. enable during compilation phase");
 #endif
 	}

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/PlayerThread.cxx

@@ -612,6 +612,12 @@ Player::ProcessCommand()
 
 		queued = true;
 		pc.CommandFinished();
+
+		pc.Unlock();
+		if (dc.LockIsIdle())
+			StartDecoder(*new MusicPipe());
+		pc.Lock();
+
 		break;
 
 	case PlayerCommand::PAUSE:

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/SongFilter.cxx

@@ -77,7 +77,10 @@ SongFilter::Item::Item(unsigned _tag, time_t _time)
 bool
 SongFilter::Item::StringMatch(const char *s) const
 {
+#if !CLANG_CHECK_VERSION(3,6)
+	/* disabled on clang due to -Wtautological-pointer-compare */
 	assert(s != nullptr);
+#endif
 
 	if (fold_case) {
 		const std::string folded = IcuCaseFold(s);

src/SongLoader.cxx

@@ -77,7 +77,10 @@ SongLoader::LoadFile(const char *path_utf8, Error &error) const
 DetachedSong *
 SongLoader::LoadSong(const char *uri_utf8, Error &error) const
 {
+#if !CLANG_CHECK_VERSION(3,6)
+	/* disabled on clang due to -Wtautological-pointer-compare */
 	assert(uri_utf8 != nullptr);
+#endif
 
 	if (memcmp(uri_utf8, "file:///", 8) == 0)
 		/* absolute path */

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/archive/plugins/ZzipArchivePlugin.cxx

@@ -168,12 +168,13 @@ bool
 ZzipInputStream::Seek(offset_type new_offset, Error &error)
 {
 	zzip_off_t ofs = zzip_seek(file, new_offset, SEEK_SET);
-	if (ofs != -1) {
+	if (ofs < 0) {
 		error.Set(zzip_domain, "zzip_seek() has failed");
-		offset = ofs;
-		return true;
+		return false;
 	}
-	return false;
+
+	offset = ofs;
+	return true;
 }
 
 /* exported structures */

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/client/ClientProcess.cxx

@@ -41,7 +41,7 @@ client_process_command_list(Client &client, bool list_ok,
 
 		FormatDebug(client_domain, "process command \"%s\"", cmd);
 		ret = command_process(client, num++, cmd);
-		FormatDebug(client_domain, "command returned %i", ret);
+		FormatDebug(client_domain, "command returned %i", int(ret));
 		if (ret != CommandResult::OK || client.IsExpired())
 			break;
 		else if (list_ok)
@@ -90,7 +90,7 @@ client_process_line(Client &client, char *line)
 							  std::move(cmd_list));
 			FormatDebug(client_domain,
 				    "[%u] process command "
-				    "list returned %i", client.num, ret);
+				    "list returned %i", client.num, int(ret));
 
 			if (ret == CommandResult::CLOSE ||
 			    client.IsExpired())
@@ -126,7 +126,7 @@ client_process_line(Client &client, char *line)
 			ret = command_process(client, 0, line);
 			FormatDebug(client_domain,
 				    "[%u] command returned %i",
-				    client.num, ret);
+				    client.num, int(ret));
 
 			if (ret == CommandResult::CLOSE ||
 			    client.IsExpired())

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/LazyDatabase.hxx

@@ -43,7 +43,7 @@ public:
 
 	virtual const LightSong *GetSong(const char *uri_utf8,
 					 Error &error) const override;
-	virtual void ReturnSong(const LightSong *song) const;
+	void ReturnSong(const LightSong *song) const override;
 
 	virtual bool Visit(const DatabaseSelection &selection,
 			   VisitDirectory visit_directory,

src/db/plugins/ProxyDatabasePlugin.cxx

@@ -103,7 +103,7 @@ public:
 	virtual void Close() override;
 	virtual const LightSong *GetSong(const char *uri_utf8,
 				     Error &error) const override;
-	virtual void ReturnSong(const LightSong *song) const;
+	void ReturnSong(const LightSong *song) const override;
 
 	virtual bool Visit(const DatabaseSelection &selection,
 			   VisitDirectory visit_directory,
@@ -731,7 +731,7 @@ ProxyDatabase::Visit(const DatabaseSelection &selection,
 {
 	// TODO: eliminate the const_cast
 	if (!const_cast<ProxyDatabase *>(this)->EnsureConnected(error))
-		return nullptr;
+		return false;
 
 	if (!visit_directory && !visit_playlist && selection.recursive &&
 	    (ServerSupportsSearchBase(connection)
@@ -757,7 +757,7 @@ ProxyDatabase::VisitUniqueTags(const DatabaseSelection &selection,
 {
 	// TODO: eliminate the const_cast
 	if (!const_cast<ProxyDatabase *>(this)->EnsureConnected(error))
-		return nullptr;
+		return false;
 
 	enum mpd_tag_type tag_type2 = Convert(tag_type);
 	if (tag_type2 == MPD_TAG_COUNT) {
@@ -810,7 +810,7 @@ ProxyDatabase::GetStats(const DatabaseSelection &selection,
 
 	// TODO: eliminate the const_cast
 	if (!const_cast<ProxyDatabase *>(this)->EnsureConnected(error))
-		return nullptr;
+		return false;
 
 	struct mpd_stats *stats2 =
 		mpd_run_stats(connection);

src/db/plugins/simple/SimpleDatabasePlugin.cxx

@@ -435,9 +435,12 @@ SimpleDatabase::Save(Error &error)
 bool
 SimpleDatabase::Mount(const char *uri, Database *db, Error &error)
 {
+#if !CLANG_CHECK_VERSION(3,6)
+	/* disabled on clang due to -Wtautological-pointer-compare */
 	assert(uri != nullptr);
-	assert(*uri != 0);
 	assert(db != nullptr);
+#endif
+	assert(*uri != 0);
 
 	ScopeDatabaseLock protect;
 
@@ -445,13 +448,13 @@ SimpleDatabase::Mount(const char *uri, Database *db, Error &error)
 	if (r.uri == nullptr) {
 		error.Format(db_domain, DB_CONFLICT,
 			     "Already exists: %s", uri);
-		return nullptr;
+		return false;
 	}
 
 	if (strchr(r.uri, '/') != nullptr) {
 		error.Format(db_domain, DB_NOT_FOUND,
 			     "Parent not found: %s", uri);
-		return nullptr;
+		return false;
 	}
 
 	Directory *mnt = r.directory->CreateChild(r.uri);
@@ -478,7 +481,7 @@ SimpleDatabase::Mount(const char *local_uri, const char *storage_uri,
 	if (cache_path.IsNull()) {
 		error.Format(db_domain, DB_NOT_FOUND,
 			     "No 'cache_directory' configured");
-		return nullptr;
+		return false;
 	}
 
 	std::string name(storage_uri);

src/db/plugins/simple/SimpleDatabasePlugin.hxx

@@ -110,9 +110,9 @@ public:
 	virtual bool Open(Error &error) override;
 	virtual void Close() override;
 
-	virtual const LightSong *GetSong(const char *uri_utf8,
-					 Error &error) const override;
-	virtual void ReturnSong(const LightSong *song) const;
+	const LightSong *GetSong(const char *uri_utf8,
+				 Error &error) const override;
+	void ReturnSong(const LightSong *song) const override;
 
 	virtual bool Visit(const DatabaseSelection &selection,
 			   VisitDirectory visit_directory,

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/db/plugins/upnp/UpnpDatabasePlugin.cxx

@@ -85,7 +85,7 @@ public:
 	virtual void Close() override;
 	virtual const LightSong *GetSong(const char *uri_utf8,
 					 Error &error) const override;
-	virtual void ReturnSong(const LightSong *song) const;
+	void ReturnSong(const LightSong *song) const override;
 
 	virtual bool Visit(const DatabaseSelection &selection,
 			   VisitDirectory visit_directory,
@@ -101,7 +101,9 @@ public:
 	virtual bool GetStats(const DatabaseSelection &selection,
 			      DatabaseStats &stats,
 			      Error &error) const override;
-	virtual time_t GetUpdateStamp() const {return 0;}
+	time_t GetUpdateStamp() const override {
+		return 0;
+	}
 
 protected:
 	bool Configure(const config_param &param, Error &error);

src/db/update/Walk.cxx

@@ -334,7 +334,7 @@ UpdateWalk::UpdateDirectory(Directory &directory, const FileInfo &info)
 	directory_set_stat(directory, info);
 
 	Error error;
-	const std::auto_ptr<StorageDirectoryReader> reader(storage.OpenDirectory(directory.GetPath(), error));
+	const std::unique_ptr<StorageDirectoryReader> reader(storage.OpenDirectory(directory.GetPath(), error));
 	if (reader.get() == nullptr) {
 		LogError(error);
 		return false;

src/decoder/DecoderAPI.cxx

@@ -433,8 +433,11 @@ update_stream_tag(Decoder &decoder, InputStream *is)
 
 		/* no stream tag present - submit the song tag
 		   instead */
-		decoder.song_tag = nullptr;
-	}
+	} else
+		/* discard the song tag; we don't need it */
+		delete decoder.song_tag;
+
+	decoder.song_tag = nullptr;
 
 	delete decoder.stream_tag;
 	decoder.stream_tag = tag;
@@ -566,7 +569,7 @@ decoder_tag(Decoder &decoder, InputStream *is,
 	/* save the tag */
 
 	delete decoder.decoder_tag;
-	decoder.decoder_tag = new Tag(tag);
+	decoder.decoder_tag = new Tag(std::move(tag));
 
 	/* check for a new stream tag */
 

src/decoder/DecoderList.cxx

@@ -37,7 +37,6 @@
 #include "plugins/MadDecoderPlugin.hxx"
 #include "plugins/SndfileDecoderPlugin.hxx"
 #include "plugins/Mpg123DecoderPlugin.hxx"
-#include "plugins/Mp4v2DecoderPlugin.hxx"
 #include "plugins/WildmidiDecoderPlugin.hxx"
 #include "plugins/MikmodDecoderPlugin.hxx"
 #include "plugins/ModplugDecoderPlugin.hxx"
@@ -55,9 +54,6 @@ const struct DecoderPlugin *const decoder_plugins[] = {
 #ifdef HAVE_MPG123
 	&mpg123_decoder_plugin,
 #endif
-#ifdef HAVE_MP4V2
-	&mp4v2_decoder_plugin,
-#endif
 #ifdef ENABLE_VORBIS_DECODER
 	&vorbis_decoder_plugin,
 #endif

src/decoder/DecoderPlugin.cxx

@@ -26,7 +26,10 @@
 bool
 DecoderPlugin::SupportsSuffix(const char *suffix) const
 {
+#if !CLANG_CHECK_VERSION(3,6)
+	/* disabled on clang due to -Wtautological-pointer-compare */
 	assert(suffix != nullptr);
+#endif
 
 	return suffixes != nullptr && string_array_contains(suffixes, suffix);
 
@@ -35,7 +38,10 @@ DecoderPlugin::SupportsSuffix(const char *suffix) const
 bool
 DecoderPlugin::SupportsMimeType(const char *mime_type) const
 {
+#if !CLANG_CHECK_VERSION(3,6)
+	/* disabled on clang due to -Wtautological-pointer-compare */
 	assert(mime_type != nullptr);
+#endif
 
 	return mime_types != nullptr &&
 		string_array_contains(mime_types, mime_type);

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,
@@ -379,7 +380,11 @@ decoder_run_song(DecoderControl &dc,
 		 const DetachedSong &song, const char *uri, Path path_fs)
 {
 	Decoder decoder(dc, dc.start_time.IsPositive(),
-			new Tag(song.GetTag()));
+			/* pass the song tag only if it's
+			   authoritative, i.e. if it's a local file -
+			   tags on "stream" songs are just remembered
+			   from the last time we played it*/
+			song.IsFile() ? new Tag(song.GetTag()) : nullptr);
 	int ret;
 
 	dc.state = DecoderState::START;

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/DsdLib.cxx

@@ -29,8 +29,10 @@
 #include "input/InputStream.hxx"
 #include "tag/TagId3.hxx"
 #include "util/Error.hxx"
+#include "util/Alloc.hxx"
 
 #include <string.h>
+#include <stdlib.h>
 
 #ifdef HAVE_ID3TAG
 #include <id3tag.h>
@@ -53,7 +55,7 @@ dsdlib_skip_to(Decoder *decoder, InputStream &is,
 	       offset_type offset)
 {
 	if (is.IsSeekable())
-		return is.Seek(offset, IgnoreError());
+		return is.LockSeek(offset, IgnoreError());
 
 	if (is.GetOffset() > offset)
 		return false;
@@ -72,7 +74,7 @@ dsdlib_skip(Decoder *decoder, InputStream &is,
 		return true;
 
 	if (is.IsSeekable())
-		return is.Seek(is.GetOffset() + delta, IgnoreError());
+		return is.LockSeek(is.GetOffset() + delta, IgnoreError());
 
 	if (delta > 1024 * 1024)
 		/* don't skip more than one megabyte; it would be too
@@ -123,22 +125,26 @@ dsdlib_tag_id3(InputStream &is,
 
 	const id3_length_t count = size - offset;
 
-	/* Check and limit id3 tag size to prevent a stack overflow */
-	id3_byte_t dsdid3[4096];
-	if (count == 0 || count > sizeof(dsdid3))
+	if (count < 10 || count > 1024 * 1024)
 		return;
 
-	if (!decoder_read_full(nullptr, is, dsdid3, count))
+	id3_byte_t *const id3_buf = new id3_byte_t[count];
+	if (id3_buf == nullptr)
 		return;
 
-	struct id3_tag *id3_tag = id3_tag_parse(dsdid3, count);
+	if (!decoder_read_full(nullptr, is, id3_buf, count)) {
+		delete[] id3_buf;
+		return;
+	}
+
+	struct id3_tag *id3_tag = id3_tag_parse(id3_buf, count);
+	delete[] id3_buf;
 	if (id3_tag == nullptr)
 		return;
 
 	scan_id3_tag(id3_tag, handler, handler_ctx);
 
 	id3_tag_delete(id3_tag);
-
 	return;
 }
 #endif

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

@@ -92,14 +92,14 @@ struct AvioStream {
 
 	AVIOContext *io;
 
-	unsigned char buffer[8192];
-
 	AvioStream(Decoder *_decoder, InputStream &_input)
 		:decoder(_decoder), input(_input), io(nullptr) {}
 
 	~AvioStream() {
-		if (io != nullptr)
+		if (io != nullptr) {
+			av_free(io->buffer);
 			av_free(io);
+		}
 	}
 
 	bool Open();
@@ -153,11 +153,20 @@ mpd_ffmpeg_stream_seek(void *opaque, int64_t pos, int whence)
 bool
 AvioStream::Open()
 {
-	io = avio_alloc_context(buffer, sizeof(buffer),
+	constexpr size_t BUFFER_SIZE = 8192;
+	auto buffer = (unsigned char *)av_malloc(BUFFER_SIZE);
+	if (buffer == nullptr)
+		return false;
+
+	io = avio_alloc_context(buffer, BUFFER_SIZE,
 				false, this,
 				mpd_ffmpeg_stream_read, nullptr,
 				input.IsSeekable()
 				? mpd_ffmpeg_stream_seek : nullptr);
+	/* If avio_alloc_context() fails, who frees the buffer?  The
+	   libavformat API documentation does not specify this, it
+	   only says that AVIOContext.buffer must be freed in the end,
+	   however no AVIOContext exists in that failure code path. */
 	return io != nullptr;
 }
 
@@ -305,18 +314,61 @@ copy_interleave_frame(const AVCodecContext *codec_context,
 	return data_size;
 }
 
+/**
+ * Convert AVPacket::pts to a stream-relative time stamp (still in
+ * AVStream::time_base units).  Returns a negative value on error.
+ */
+gcc_pure
+static int64_t
+StreamRelativePts(const AVPacket &packet, const AVStream &stream)
+{
+	auto pts = packet.pts;
+	if (pts < 0 || pts == int64_t(AV_NOPTS_VALUE))
+		return -1;
+
+	auto start = start_time_fallback(stream);
+	return pts - start;
+}
+
+/**
+ * Convert a non-negative stream-relative time stamp in
+ * AVStream::time_base units to a PCM frame number.
+ */
+gcc_pure
+static uint64_t
+PtsToPcmFrame(uint64_t pts, const AVStream &stream,
+	      const AVCodecContext &codec_context)
+{
+	return av_rescale_q(pts, stream.time_base, codec_context.time_base);
+}
+
+/**
+ * @param min_frame skip all data before this PCM frame number; this
+ * is used after seeking to skip data in an AVPacket until the exact
+ * desired time stamp has been reached
+ */
 static DecoderCommand
 ffmpeg_send_packet(Decoder &decoder, InputStream &is,
 		   const AVPacket *packet,
 		   AVCodecContext *codec_context,
 		   const AVStream *stream,
 		   AVFrame *frame,
+		   uint64_t min_frame, size_t pcm_frame_size,
 		   uint8_t **buffer, int *buffer_size)
 {
-	if (packet->pts >= 0 && packet->pts != (int64_t)AV_NOPTS_VALUE)
-		decoder_timestamp(decoder,
-				  time_from_ffmpeg(packet->pts - start_time_fallback(*stream),
-				  stream->time_base));
+	size_t skip_bytes = 0;
+
+	const auto pts = StreamRelativePts(*packet, *stream);
+	if (pts >= 0) {
+		if (min_frame > 0) {
+			auto cur_frame = PtsToPcmFrame(pts, *stream,
+						       *codec_context);
+			if (cur_frame < min_frame)
+				skip_bytes = pcm_frame_size * (min_frame - cur_frame);
+		} else
+			decoder_timestamp(decoder,
+					  time_from_ffmpeg(pts, stream->time_base));
+	}
 
 	AVPacket packet2 = *packet;
 
@@ -351,8 +403,20 @@ ffmpeg_send_packet(Decoder &decoder, InputStream &is,
 		if (audio_size <= 0)
 			continue;
 
+		const uint8_t *data = output_buffer;
+		if (skip_bytes > 0) {
+			if (skip_bytes >= size_t(audio_size)) {
+				skip_bytes -= audio_size;
+				continue;
+			}
+
+			data += skip_bytes;
+			audio_size -= skip_bytes;
+			skip_bytes = 0;
+		}
+
 		cmd = decoder_data(decoder, is,
-				   output_buffer, audio_size,
+				   data, audio_size,
 				   codec_context->bit_rate / 1000);
 	}
 	return cmd;
@@ -371,6 +435,7 @@ ffmpeg_sample_format(enum AVSampleFormat sample_fmt)
 	case AV_SAMPLE_FMT_S32P:
 		return SampleFormat::S32;
 
+	case AV_SAMPLE_FMT_FLT:
 	case AV_SAMPLE_FMT_FLTP:
 		return SampleFormat::FLOAT;
 
@@ -423,10 +488,15 @@ ffmpeg_probe(Decoder *decoder, InputStream &is)
 	avpd.filename = is.GetURI();
 
 #ifdef AVPROBE_SCORE_MIME
+#if LIBAVFORMAT_VERSION_INT < AV_VERSION_INT(56, 5, 1)
 	/* this attribute was added in libav/ffmpeg version 11, but
 	   unfortunately it's "uint8_t" instead of "char", and it's
 	   not "const" - wtf? */
 	avpd.mime_type = (uint8_t *)const_cast<char *>(is.GetMimeType());
+#else
+	/* API problem fixed in FFmpeg 2.5 */
+	avpd.mime_type = is.GetMimeType();
+#endif
 #endif
 
 	return av_probe_input_format(&avpd, true);
@@ -550,6 +620,8 @@ ffmpeg_decode(Decoder &decoder, InputStream &input)
 	uint8_t *interleaved_buffer = nullptr;
 	int interleaved_buffer_size = 0;
 
+	uint64_t min_frame = 0;
+
 	DecoderCommand cmd;
 	do {
 		AVPacket packet;
@@ -557,13 +629,15 @@ ffmpeg_decode(Decoder &decoder, InputStream &input)
 			/* end of file */
 			break;
 
-		if (packet.stream_index == audio_stream)
+		if (packet.stream_index == audio_stream) {
 			cmd = ffmpeg_send_packet(decoder, input,
 						 &packet, codec_context,
 						 av_stream,
 						 frame,
+						 min_frame, audio_format.GetFrameSize(),
 						 &interleaved_buffer, &interleaved_buffer_size);
-		else
+			min_frame = 0;
+		} else
 			cmd = decoder_get_command(decoder);
 
 		av_free_packet(&packet);
@@ -574,11 +648,16 @@ ffmpeg_decode(Decoder &decoder, InputStream &input)
 					       av_stream->time_base) +
 				start_time_fallback(*av_stream);
 
+			/* AVSEEK_FLAG_BACKWARD asks FFmpeg to seek to
+			   the packet boundary before the seek time
+			   stamp, not after */
+
 			if (av_seek_frame(format_context, audio_stream, where,
-					  AVSEEK_FLAG_ANY) < 0)
+					  AVSEEK_FLAG_ANY|AVSEEK_FLAG_BACKWARD) < 0)
 				decoder_seek_error(decoder);
 			else {
 				avcodec_flush_buffers(codec_context);
+				min_frame = decoder_seek_where_frame(decoder);
 				decoder_command_finished(decoder);
 			}
 		}
@@ -657,7 +736,7 @@ 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 +759,7 @@ static const char *const ffmpeg_mime_types[] = {
 	"audio/8svx",
 	"audio/16sv",
 	"audio/aac",
+	"audio/aacp",
 	"audio/ac3",
 	"audio/aiff"
 	"audio/amr",
@@ -690,6 +770,7 @@ 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/GmeDecoderPlugin.cxx

@@ -156,8 +156,11 @@ gme_file_decode(Decoder &decoder, Path path_fs)
 		return;
 	}
 
-	const SignedSongTime song_len = ti->length > 0
-		? SignedSongTime::FromMS(ti->length)
+	const int length = ti->play_length;
+	gme_free_info(ti);
+
+	const SignedSongTime song_len = length > 0
+		? SignedSongTime::FromMS(length)
 		: SignedSongTime::Negative();
 
 	/* initialize the MPD decoder */
@@ -168,7 +171,6 @@ gme_file_decode(Decoder &decoder, Path path_fs)
 				       SampleFormat::S16, GME_CHANNELS,
 				       error)) {
 		LogError(error);
-		gme_free_info(ti);
 		gme_delete(emu);
 		return;
 	}
@@ -179,8 +181,8 @@ gme_file_decode(Decoder &decoder, Path path_fs)
 	if (gme_err != nullptr)
 		LogWarning(gme_domain, gme_err);
 
-	if (ti->length > 0)
-		gme_set_fade(emu, ti->length);
+	if (length > 0)
+		gme_set_fade(emu, length);
 
 	/* play */
 	DecoderCommand cmd;
@@ -196,16 +198,17 @@ gme_file_decode(Decoder &decoder, Path path_fs)
 		if (cmd == DecoderCommand::SEEK) {
 			unsigned where = decoder_seek_time(decoder).ToMS();
 			gme_err = gme_seek(emu, where);
-			if (gme_err != nullptr)
+			if (gme_err != nullptr) {
 				LogWarning(gme_domain, gme_err);
-			decoder_command_finished(decoder);
+				decoder_seek_error(decoder);
+			} else
+				decoder_command_finished(decoder);
 		}
 
 		if (gme_track_ended(emu))
 			break;
 	} while (cmd != DecoderCommand::STOP);
 
-	gme_free_info(ti);
 	gme_delete(emu);
 }
 
@@ -236,9 +239,9 @@ gme_scan_file(Path path_fs,
 
 	assert(ti != nullptr);
 
-	if (ti->length > 0)
+	if (ti->play_length > 0)
 		tag_handler_invoke_duration(handler, handler_ctx,
-					    SongTime::FromMS(ti->length));
+					    SongTime::FromMS(ti->play_length));
 
 	if (ti->song != nullptr) {
 		if (gme_track_count(emu) > 1) {

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

@@ -1,338 +0,0 @@
-/*
- * 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.
- */
-
-#include "config.h" /* must be first for large file support */
-#include "Mp4v2DecoderPlugin.hxx"
-#include "../DecoderAPI.hxx"
-#include "CheckAudioFormat.hxx"
-#include "tag/TagHandler.hxx"
-#include "fs/Path.hxx"
-#include "util/Error.hxx"
-#include "util/Domain.hxx"
-#include "Log.hxx"
-
-#include <mp4v2/mp4v2.h>
-#include <neaacdec.h>
-
-#include <cstdio>
-#include <cstdlib>
-
-static constexpr Domain mp4v2_decoder_domain("mp4v2");
-
-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
-
-	const MP4TrackId tracks = MP4GetNumberOfTracks(handle);
-
-	for (MP4TrackId id = 1; id <= tracks; id++) {
-		const char* track_type = MP4GetTrackType(handle, id);
-
-		if (track_type == 0)
-			continue;
-
-		const auto obj_type = MP4GetTrackEsdsObjectTypeId(handle, id);
-
-		if (obj_type == MP4_INVALID_AUDIO_TYPE)
-			continue;
-		if (obj_type == MP4_MPEG4_AUDIO_TYPE) {
-			const auto mpeg_type = MP4GetTrackAudioMpeg4Type(handle, id);
-			if (!MP4_IS_MPEG4_AAC_AUDIO_TYPE(mpeg_type))
-				continue;
-		} else if (!MP4_IS_AAC_AUDIO_TYPE(obj_type))
-			continue;
-
-		if (decoder == nullptr)
-			/* found audio track, no decoder */
-			return id;
-
-		unsigned char *buff = nullptr;
-		unsigned buff_size = 0;
-
-		if (!MP4GetTrackESConfiguration(handle, id, &buff, &buff_size))
-			continue;
-
-		uint8_t channels;
-		int32_t nbytes = NeAACDecInit(decoder, buff, buff_size,
-				       sample_rate_r, &channels);
-
-		free(buff);
-
-		if (nbytes < 0)
-			/* invalid stream */
-			continue;
-
-		if (!audio_format_init_checked(audio_format, sample_rate,
-					       SampleFormat::S16,
-					       channels,
-					       error))
-			continue;
-
-		return id;
-	}
-
-	error.Set(mp4v2_decoder_domain, "no valid aac track found");
-
-	return MP4_INVALID_TRACK_ID;
-}
-
-static NeAACDecHandle
-mp4_faad_new(MP4FileHandle handle, AudioFormat &audio_format, Error &error)
-{
-	const NeAACDecHandle decoder = NeAACDecOpen();
-	const NeAACDecConfigurationPtr config =
-		NeAACDecGetCurrentConfiguration(decoder);
-	config->outputFormat = FAAD_FMT_16BIT;
-	config->downMatrix = 1;
-	config->dontUpSampleImplicitSBR = 0;
-	NeAACDecSetConfiguration(decoder, config);
-
-	const auto track = mp4_get_aac_track(handle, decoder, audio_format, error);
-
-	if (track == MP4_INVALID_TRACK_ID) {
-		NeAACDecClose(decoder);
-		return nullptr;
-	}
-
-	return decoder;
-}
-
-static void
-mp4_file_decode(Decoder &mpd_decoder, Path path_fs)
-{
-	const MP4FileHandle handle = MP4Read(path_fs.c_str());
-
-	if (handle == MP4_INVALID_FILE_HANDLE) {
-		FormatError(mp4v2_decoder_domain,
-			  "unable to open file");
-		return;
-	}
-
-	AudioFormat audio_format;
-	Error error;
-	const NeAACDecHandle decoder = mp4_faad_new(handle, audio_format, error);
-
-	if (decoder == nullptr) {
-		LogError(error);
-		MP4Close(handle);
-		return;
-	}
-
-	const MP4TrackId track = mp4_get_aac_track(handle, nullptr, audio_format, error);
-
-	/* initialize the MPD core */
-
-	const MP4Timestamp scale = MP4GetTrackTimeScale(handle, track);
-	const SongTime duration = SongTime::FromScale<uint64_t>(MP4GetTrackDuration(handle, track),
-								scale);
-	const MP4SampleId num_samples = MP4GetTrackNumberOfSamples(handle, track);
-
-	decoder_initialized(mpd_decoder, audio_format, true, duration);
-
-	/* the decoder loop */
-
-	DecoderCommand cmd = DecoderCommand::NONE;
-
-	for (MP4SampleId sample = 1;
-	     sample < num_samples && cmd != DecoderCommand::STOP;
-	     sample++) {
-		unsigned char *data = nullptr;
-		unsigned int data_length = 0;
-
-		if (cmd == DecoderCommand::SEEK) {
-			const MP4Timestamp offset =
-				decoder_seek_time(mpd_decoder).ToScale(scale);
-
-			sample = MP4GetSampleIdFromTime(handle, track, offset,
-							false);
-			decoder_command_finished(mpd_decoder);
-		}
-
-		/* read */
-		if (MP4ReadSample(handle, track, sample, &data, &data_length) == 0) {
-			FormatError(mp4v2_decoder_domain, "unable to read sample");
-			break;
-		}
-
-		/* decode it */
-		NeAACDecFrameInfo frame_info;
-		const void *const decoded = NeAACDecDecode(decoder, &frame_info, data, data_length);
-
-		if (frame_info.error > 0) {
-			FormatWarning(mp4v2_decoder_domain,
-				      "error decoding AAC stream: %s",
-				      NeAACDecGetErrorMessage(frame_info.error));
-			break;
-		}
-
-		if (frame_info.channels != audio_format.channels) {
-			FormatDefault(mp4v2_decoder_domain,
-				      "channel count changed from %u to %u",
-				      audio_format.channels, frame_info.channels);
-			break;
-		}
-
-		if (frame_info.samplerate != audio_format.sample_rate) {
-			FormatDefault(mp4v2_decoder_domain,
-				      "sample rate changed from %u to %lu",
-				      audio_format.sample_rate,
-				      (unsigned long)frame_info.samplerate);
-			break;
-		}
-
-		/* update bit rate and position */
-		unsigned bit_rate = 0;
-
-		if (frame_info.samples > 0) {
-			bit_rate = frame_info.bytesconsumed * 8.0 *
-			    frame_info.channels * audio_format.sample_rate /
-			    frame_info.samples / 1000 + 0.5;
-		}
-
-		/* send PCM samples to MPD */
-
-		cmd = decoder_data(mpd_decoder, nullptr, decoded,
-				   (size_t)frame_info.samples * 2,
-				   bit_rate);
-
-		free(data);
-	}
-
-	/* cleanup */
-	NeAACDecClose(decoder);
-	MP4Close(handle);
-}
-
-static inline void
-mp4_safe_invoke_tag(const struct tag_handler *handler, void *handler_ctx,
-		    TagType tag, const char *value)
-{
-	if (value != nullptr)
-		tag_handler_invoke_tag(handler, handler_ctx, tag, value);
-}
-
-static bool
-mp4_scan_file(Path path_fs,
-		 const struct tag_handler *handler, void *handler_ctx)
-{
-	const MP4FileHandle handle = MP4Read(path_fs.c_str());
-
-	if (handle == MP4_INVALID_FILE_HANDLE)
-		return false;
-
-	AudioFormat tmp_audio_format;
-	Error error;
-	const MP4TrackId id = mp4_get_aac_track(handle, nullptr, tmp_audio_format, error);
-
-	if (id == MP4_INVALID_TRACK_ID) {
-		LogError(error);
-		MP4Close(handle);
-		return false;
-	}
-
-	const MP4Timestamp scale = MP4GetTrackTimeScale(handle, id);
-	const SongTime dur =
-		SongTime::FromScale<uint64_t>(MP4GetTrackDuration(handle, id),
-					      scale);
-	tag_handler_invoke_duration(handler, handler_ctx, dur);
-
-	const MP4Tags* tags = MP4TagsAlloc();
-	MP4TagsFetch(tags, handle);
-
-	static constexpr struct {
-		const char *MP4Tags::*p;
-		TagType tag_type;
-	} mp4v2_tags[] = {
-		{ &MP4Tags::name, TAG_NAME },
-		{ &MP4Tags::artist, TAG_ARTIST },
-		{ &MP4Tags::albumArtist, TAG_ALBUM_ARTIST },
-		{ &MP4Tags::album, TAG_ALBUM },
-		{ &MP4Tags::composer, TAG_COMPOSER },
-		{ &MP4Tags::comments, TAG_COMMENT },
-		{ &MP4Tags::genre, TAG_GENRE },
-		{ &MP4Tags::releaseDate, TAG_DATE },
-		{ &MP4Tags::sortArtist, TAG_ARTIST_SORT },
-		{ &MP4Tags::sortAlbumArtist, TAG_ALBUM_ARTIST_SORT },
-	};
-
-	for (const auto &i : mp4v2_tags)
-		mp4_safe_invoke_tag(handler, handler_ctx,
-				    i.tag_type, tags->*i.p);
-
-	char buff[8]; /* tmp buffer for index to string. */
-	if (tags->track != nullptr) {
-		sprintf(buff, "%d", tags->track->index);
-		tag_handler_invoke_tag(handler, handler_ctx, TAG_TRACK, buff);
-	}
-
-	if (tags->disk != nullptr) {
-		sprintf(buff, "%d", tags->disk->index);
-		tag_handler_invoke_tag(handler, handler_ctx, TAG_DISC, buff);
-	}
-
-	MP4TagsFree(tags);
-	MP4Close(handle);
-
-	return true;
-}
-
-static const char *const mp4_suffixes[] = {
-	"mp4",
-	"m4a",
-	/* "m4p", encrypted */
-	/* "m4b", audio book */
-	/* "m4r", ring tones */
-	/* "m4v", video */
-	nullptr
-};
-
-static const char *const mp4_mime_types[] = {
-	"application/mp4",
-	"application/m4a",
-	"audio/mp4",
-	"audio/m4a",
-	/* "audio/m4p", */
-	/* "audio/m4b", */
-	/* "audio/m4r", */
-	/* "audio/m4v", */
-	nullptr
-};
-
-const struct DecoderPlugin mp4v2_decoder_plugin = {
-	"mp4v2",
-	nullptr,
-	nullptr,
-	nullptr,
-	mp4_file_decode,
-	mp4_scan_file,
-	nullptr,
-	nullptr,
-	mp4_suffixes,
-	mp4_mime_types
-};

src/decoder/plugins/MpcdecDecoderPlugin.cxx

@@ -22,10 +22,12 @@
 #include "../DecoderAPI.hxx"
 #include "input/InputStream.hxx"
 #include "CheckAudioFormat.hxx"
+#include "pcm/Traits.hxx"
 #include "tag/TagHandler.hxx"
 #include "util/Error.hxx"
 #include "util/Domain.hxx"
 #include "util/Macros.hxx"
+#include "util/Clamp.hxx"
 #include "Log.hxx"
 
 #include <mpc/mpcdec.h>
@@ -42,6 +44,9 @@ struct mpc_decoder_data {
 
 static constexpr Domain mpcdec_domain("mpcdec");
 
+static constexpr SampleFormat mpcdec_sample_format = SampleFormat::S24_P32;
+typedef SampleTraits<mpcdec_sample_format> MpcdecSampleTraits;
+
 static mpc_int32_t
 mpc_read_cb(mpc_reader *reader, void *ptr, mpc_int32_t size)
 {
@@ -91,18 +96,15 @@ mpc_getsize_cb(mpc_reader *reader)
 }
 
 /* this _looks_ performance-critical, don't de-inline -- eric */
-static inline int32_t
+static inline MpcdecSampleTraits::value_type
 mpc_to_mpd_sample(MPC_SAMPLE_FORMAT sample)
 {
 	/* only doing 16-bit audio for now */
-	int32_t val;
+	MpcdecSampleTraits::value_type val;
 
-	enum {
-		bits = 24,
-	};
-
-	const int clip_min = -1 << (bits - 1);
-	const int clip_max = (1 << (bits - 1)) - 1;
+	constexpr int bits = MpcdecSampleTraits::BITS;
+	constexpr auto clip_min = MpcdecSampleTraits::MIN;
+	constexpr auto clip_max = MpcdecSampleTraits::MAX;
 
 #ifdef MPC_FIXED_POINT
 	const int shift = bits - MPC_FIXED_POINT_SCALE_SHIFT;
@@ -117,16 +119,12 @@ mpc_to_mpd_sample(MPC_SAMPLE_FORMAT sample)
 	val = sample * float_scale;
 #endif
 
-	if (val < clip_min)
-		val = clip_min;
-	else if (val > clip_max)
-		val = clip_max;
-
-	return val;
+	return Clamp(val, clip_min, clip_max);
 }
 
 static void
-mpc_to_mpd_buffer(int32_t *dest, const MPC_SAMPLE_FORMAT *src,
+mpc_to_mpd_buffer(MpcdecSampleTraits::pointer_type dest,
+		  const MPC_SAMPLE_FORMAT *src,
 		  unsigned num_samples)
 {
 	while (num_samples-- > 0)
@@ -162,7 +160,7 @@ mpcdec_decode(Decoder &mpd_decoder, InputStream &is)
 	Error error;
 	AudioFormat audio_format;
 	if (!audio_format_init_checked(audio_format, info.sample_freq,
-				       SampleFormat::S24_P32,
+				       mpcdec_sample_format,
 				       info.channels, error)) {
 		LogError(error);
 		mpc_demux_exit(demux);
@@ -214,7 +212,7 @@ mpcdec_decode(Decoder &mpd_decoder, InputStream &is)
 		mpc_uint32_t ret = frame.samples;
 		ret *= info.channels;
 
-		int32_t chunk[ARRAY_SIZE(sample_buffer)];
+		MpcdecSampleTraits::value_type chunk[ARRAY_SIZE(sample_buffer)];
 		mpc_to_mpd_buffer(chunk, sample_buffer, ret);
 
 		long bit_rate = vbr_update_bits * audio_format.sample_rate

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();
 
@@ -198,7 +214,7 @@ LoadEOSPacket(InputStream &is, Decoder *decoder, int serialno,
 	ogg_stream_clear(&os);
 
 	/* restore the previous file position */
-	is.Seek(old_offset, IgnoreError());
+	is.LockSeek(old_offset, IgnoreError());
 
 	return result;
 }
@@ -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/encoder/plugins/FlacEncoderPlugin.cxx

@@ -157,8 +157,6 @@ flac_encoder_open(Encoder *_encoder, AudioFormat &audio_format, Error &error)
 	struct flac_encoder *encoder = (struct flac_encoder *)_encoder;
 	unsigned bits_per_sample;
 
-	encoder->audio_format = audio_format;
-
 	/* FIXME: flac should support 32bit as well */
 	switch (audio_format.format) {
 	case SampleFormat::S8:
@@ -178,6 +176,8 @@ flac_encoder_open(Encoder *_encoder, AudioFormat &audio_format, Error &error)
 		audio_format.format = SampleFormat::S24_P32;
 	}
 
+	encoder->audio_format = audio_format;
+
 	/* allocate the encoder */
 	encoder->fse = FLAC__stream_encoder_new();
 	if (encoder->fse == nullptr) {

src/encoder/plugins/OpusEncoderPlugin.cxx

@@ -66,7 +66,7 @@ struct opus_encoder {
 
 	ogg_int64_t granulepos;
 
-	opus_encoder():encoder(opus_encoder_plugin) {}
+	opus_encoder():encoder(opus_encoder_plugin), granulepos(0) {}
 };
 
 static constexpr Domain opus_encoder_domain("opus_encoder");

src/encoder/plugins/ShineEncoderPlugin.cxx

@@ -26,7 +26,6 @@
 #include "util/NumberParser.hxx"
 #include "util/DynamicFifoBuffer.hxx"
 #include "util/Error.hxx"
-#include "util/Domain.hxx"
 
 extern "C"
 {
@@ -60,8 +59,6 @@ struct ShineEncoder {
 	bool WriteChunk(bool flush);
 };
 
-static constexpr Domain shine_encoder_domain("shine_encoder");
-
 inline bool
 ShineEncoder::Configure(const config_param &param,
 			 gcc_unused Error &error)

src/event/DeferredMonitor.hxx

@@ -21,9 +21,6 @@
 #define MPD_SOCKET_DEFERRED_MONITOR_HXX
 
 #include "check.h"
-#include "Compiler.h"
-
-#include <atomic>
 
 class EventLoop;
 

src/event/Loop.cxx

@@ -179,9 +179,10 @@ EventLoop::Run()
 		mutex.lock();
 		HandleDeferred();
 		busy = false;
+		const bool _again = again;
 		mutex.unlock();
 
-		if (again)
+		if (_again)
 			/* re-evaluate timers because one of the
 			   IdleMonitors may have added a new
 			   timeout */

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/filter/plugins/ChainFilterPlugin.cxx

@@ -53,10 +53,11 @@ public:
 		children.emplace_back(name, filter);
 	}
 
-	virtual AudioFormat Open(AudioFormat &af, Error &error) override;
-	virtual void Close();
-	virtual ConstBuffer<void> FilterPCM(ConstBuffer<void> src,
-					    Error &error);
+	/* virtual methods from class Filter */
+	AudioFormat Open(AudioFormat &af, Error &error) override;
+	void Close() override;
+	ConstBuffer<void> FilterPCM(ConstBuffer<void> src,
+					    Error &error) override;
 
 private:
 	/**

src/filter/plugins/NormalizeFilterPlugin.cxx

@@ -34,10 +34,11 @@ class NormalizeFilter final : public Filter {
 	PcmBuffer buffer;
 
 public:
-	virtual AudioFormat Open(AudioFormat &af, Error &error) override;
-	virtual void Close();
-	virtual ConstBuffer<void> FilterPCM(ConstBuffer<void> src,
-					    Error &error) override;
+	/* virtual methods from class Filter */
+	AudioFormat Open(AudioFormat &af, Error &error) override;
+	void Close() override;
+	ConstBuffer<void> FilterPCM(ConstBuffer<void> src,
+				    Error &error) override;
 };
 
 static Filter *

src/filter/plugins/ReplayGainFilterPlugin.cxx

@@ -112,10 +112,11 @@ public:
 	 */
 	void Update();
 
-	virtual AudioFormat Open(AudioFormat &af, Error &error) override;
-	virtual void Close();
-	virtual ConstBuffer<void> FilterPCM(ConstBuffer<void> src,
-					    Error &error) override;
+	/* virtual methods from class Filter */
+	AudioFormat Open(AudioFormat &af, Error &error) override;
+	void Close() override;
+	ConstBuffer<void> FilterPCM(ConstBuffer<void> src,
+				    Error &error) override;
 };
 
 void

src/filter/plugins/RouteFilterPlugin.cxx

@@ -120,10 +120,11 @@ public:
 	 */
 	bool Configure(const config_param &param, Error &error);
 
-	virtual AudioFormat Open(AudioFormat &af, Error &error) override;
-	virtual void Close();
-	virtual ConstBuffer<void> FilterPCM(ConstBuffer<void> src,
-					    Error &error) override;
+	/* virtual methods from class Filter */
+	AudioFormat Open(AudioFormat &af, Error &error) override;
+	void Close() override;
+	ConstBuffer<void> FilterPCM(ConstBuffer<void> src,
+				    Error &error) override;
 };
 
 bool

src/filter/plugins/VolumeFilterPlugin.cxx

@@ -26,7 +26,6 @@
 #include "AudioFormat.hxx"
 #include "util/ConstBuffer.hxx"
 #include "util/Error.hxx"
-#include "util/Domain.hxx"
 
 #include <assert.h>
 #include <string.h>
@@ -43,14 +42,13 @@ public:
 		pv.SetVolume(_volume);
 	}
 
-	virtual AudioFormat Open(AudioFormat &af, Error &error) override;
-	virtual void Close();
-	virtual ConstBuffer<void> FilterPCM(ConstBuffer<void> src,
-					    Error &error) override;
+	/* virtual methods from class Filter */
+	AudioFormat Open(AudioFormat &af, Error &error) override;
+	void Close() override;
+	ConstBuffer<void> FilterPCM(ConstBuffer<void> src,
+				    Error &error) override;
 };
 
-static constexpr Domain volume_domain("pcm_volume");
-
 static Filter *
 volume_filter_init(gcc_unused const config_param &param,
 		   gcc_unused Error &error)

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
@@ -102,7 +103,10 @@ static inline void FixSeparators(std::string &s)
 std::string
 PathToUTF8(const char *path_fs)
 {
+#if !CLANG_CHECK_VERSION(3,6)
+	/* disabled on clang due to -Wtautological-pointer-compare */
 	assert(path_fs != nullptr);
+#endif
 
 #ifdef HAVE_GLIB
 	if (fs_charset.empty()) {
@@ -143,7 +147,10 @@ PathToUTF8(const char *path_fs)
 char *
 PathFromUTF8(const char *path_utf8)
 {
+#if !CLANG_CHECK_VERSION(3,6)
+	/* disabled on clang due to -Wtautological-pointer-compare */
 	assert(path_utf8 != nullptr);
+#endif
 
 	if (fs_charset.empty())
 		return g_strdup(path_utf8);

src/fs/Traits.cxx

@@ -52,7 +52,10 @@ template<typename Traits>
 typename Traits::const_pointer
 GetBasePathImpl(typename Traits::const_pointer p)
 {
+#if !CLANG_CHECK_VERSION(3,6)
+	/* disabled on clang due to -Wtautological-pointer-compare */
 	assert(p != nullptr);
+#endif
 
 	typename Traits::const_pointer sep = Traits::FindLastSeparator(p);
 	return sep != nullptr
@@ -64,7 +67,10 @@ template<typename Traits>
 typename Traits::string
 GetParentPathImpl(typename Traits::const_pointer p)
 {
+#if !CLANG_CHECK_VERSION(3,6)
+	/* disabled on clang due to -Wtautological-pointer-compare */
 	assert(p != nullptr);
+#endif
 
 	typename Traits::const_pointer sep = Traits::FindLastSeparator(p);
 	if (sep == nullptr)

src/fs/Traits.hxx

@@ -57,7 +57,11 @@ struct PathTraitsFS {
 
 	gcc_pure gcc_nonnull_all
 	static const_pointer FindLastSeparator(const_pointer p) {
+#if !CLANG_CHECK_VERSION(3,6)
+		/* disabled on clang due to -Wtautological-pointer-compare */
 		assert(p != nullptr);
+#endif
+
 #ifdef WIN32
 		const_pointer pos = p + GetLength(p);
 		while (p != pos && !IsSeparator(*pos))
@@ -77,7 +81,11 @@ struct PathTraitsFS {
 
 	gcc_pure gcc_nonnull_all
 	static bool IsAbsolute(const_pointer p) {
+#if !CLANG_CHECK_VERSION(3,6)
+		/* disabled on clang due to -Wtautological-pointer-compare */
 		assert(p != nullptr);
+#endif
+
 #ifdef WIN32
 		if (IsDrive(p) && IsSeparator(p[2]))
 			return true;
@@ -147,7 +155,11 @@ struct PathTraitsUTF8 {
 
 	gcc_pure gcc_nonnull_all
 	static const_pointer FindLastSeparator(const_pointer p) {
+#if !CLANG_CHECK_VERSION(3,6)
+		/* disabled on clang due to -Wtautological-pointer-compare */
 		assert(p != nullptr);
+#endif
+
 		return strrchr(p, SEPARATOR);
 	}
 
@@ -160,7 +172,11 @@ struct PathTraitsUTF8 {
 
 	gcc_pure gcc_nonnull_all
 	static bool IsAbsolute(const_pointer p) {
+#if !CLANG_CHECK_VERSION(3,6)
+		/* disabled on clang due to -Wtautological-pointer-compare */
 		assert(p != nullptr);
+#endif
+
 #ifdef WIN32
 		if (IsDrive(p) && IsSeparator(p[2]))
 			return true;

src/fs/io/FileOutputStream.cxx

@@ -62,6 +62,7 @@ FileOutputStream::Commit(gcc_unused Error &error)
 	assert(IsDefined());
 
 	CloseHandle(handle);
+	handle = INVALID_HANDLE_VALUE;
 	return true;
 }
 
@@ -71,6 +72,7 @@ FileOutputStream::Cancel()
 	assert(IsDefined());
 
 	CloseHandle(handle);
+	handle = INVALID_HANDLE_VALUE;
 	RemoveFile(path);
 }
 

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 */
 
@@ -157,6 +160,11 @@ AsyncInputStream::SeekDone()
 	assert(io_thread_inside());
 	assert(IsSeekPending());
 
+	/* we may have reached end-of-file previously, and the
+	   connection may have been closed already; however after
+	   seeking successfully, the connection must be alive again */
+	open = true;
+
 	seek_state = SeekState::NONE;
 	cond.broadcast();
 }

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

@@ -17,9 +17,8 @@
  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  */
 
-#ifndef MPD_DECODER_MP4V2_HXX
-#define MPD_DECODER_MP4V2_HXX
+#include "config.h"
+#include "Domain.hxx"
+#include "util/Domain.hxx"
 
-extern const struct DecoderPlugin mp4v2_decoder_plugin;
-
-#endif
+const Domain input_domain("input");

src/input/Domain.hxx

@@ -17,9 +17,11 @@
  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  */
 
-#ifndef INPUT_DESPOTIFY_HXX
-#define INPUT_DESPOTIFY_HXX
+#ifndef MPD_INPUT_DOMAIN_HXX
+#define MPD_INPUT_DOMAIN_HXX
 
-extern const struct InputPlugin input_plugin_despotify;
+class Domain;
+
+extern const Domain input_domain;
 
 #endif

src/input/Init.cxx

@@ -67,7 +67,7 @@ input_stream_global_init(Error &error)
 		case InputPlugin::InitResult::UNAVAILABLE:
 			if (error.IsDefined()) {
 				FormatError(error,
-					    "Input plugin '%s' is unavailable: ",
+					    "Input plugin '%s' is unavailable",
 					    plugin->name);
 				error.Clear();
 			}

src/input/InputStream.cxx

@@ -122,7 +122,10 @@ InputStream::IsAvailable()
 size_t
 InputStream::LockRead(void *ptr, size_t _size, Error &error)
 {
+#if !CLANG_CHECK_VERSION(3,6)
+	/* disabled on clang due to -Wtautological-pointer-compare */
 	assert(ptr != nullptr);
+#endif
 	assert(_size > 0);
 
 	const ScopeLock protect(mutex);

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/Registry.cxx

@@ -54,10 +54,6 @@
 #include "plugins/CdioParanoiaInputPlugin.hxx"
 #endif
 
-#ifdef ENABLE_DESPOTIFY
-#include "plugins/DespotifyInputPlugin.hxx"
-#endif
-
 const InputPlugin *const input_plugins[] = {
 	&input_plugin_file,
 #ifdef HAVE_ALSA
@@ -83,9 +79,6 @@ const InputPlugin *const input_plugins[] = {
 #endif
 #ifdef ENABLE_CDIO_PARANOIA
 	&input_plugin_cdio_paranoia,
-#endif
-#ifdef ENABLE_DESPOTIFY
-	&input_plugin_despotify,
 #endif
 	nullptr
 };

src/input/TextInputStream.cxx

@@ -33,11 +33,13 @@ TextInputStream::ReadLine()
 	if (line != nullptr)
 		return line;
 
+	buffer.Shift();
+
 	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;
@@ -64,7 +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/ThreadInputStream.cxx

@@ -88,7 +88,7 @@ ThreadInputStream::ThreadFunc()
 			Unlock();
 
 			Error error;
-			size_t nbytes = Read(w.data, w.size, error);
+			size_t nbytes = ThreadRead(w.data, w.size, error);
 
 			Lock();
 			cond.broadcast();
@@ -118,6 +118,8 @@ ThreadInputStream::ThreadFunc(void *ctx)
 bool
 ThreadInputStream::Check(Error &error)
 {
+	assert(!thread.IsInside());
+
 	if (postponed_error.IsDefined()) {
 		error = std::move(postponed_error);
 		return false;
@@ -129,12 +131,16 @@ ThreadInputStream::Check(Error &error)
 bool
 ThreadInputStream::IsAvailable()
 {
+	assert(!thread.IsInside());
+
 	return !buffer->IsEmpty() || eof || postponed_error.IsDefined();
 }
 
 inline size_t
 ThreadInputStream::Read(void *ptr, size_t read_size, Error &error)
 {
+	assert(!thread.IsInside());
+
 	while (true) {
 		if (postponed_error.IsDefined()) {
 			error = std::move(postponed_error);
@@ -161,5 +167,7 @@ ThreadInputStream::Read(void *ptr, size_t read_size, Error &error)
 bool
 ThreadInputStream::IsEOF()
 {
+	assert(!thread.IsInside());
+
 	return eof;
 }

src/input/plugins/AlsaInputPlugin.cxx

@@ -43,6 +43,8 @@
 
 #include <alsa/asoundlib.h>
 
+#include <atomic>
+
 #include <assert.h>
 #include <string.h>
 

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);
@@ -446,6 +453,8 @@ CurlInputStream::RequestDone(CURLcode result, long status)
 		SeekDone();
 	else if (!IsReady())
 		SetReady();
+	else
+		cond.broadcast();
 }
 
 static void
@@ -597,6 +606,24 @@ 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 +672,11 @@ 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 +752,10 @@ 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/input/plugins/DespotifyInputPlugin.cxx

@@ -1,227 +0,0 @@
-/*
- * 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.
- */
-
-#include "config.h"
-#include "DespotifyInputPlugin.hxx"
-#include "lib/despotify/DespotifyUtils.hxx"
-#include "../InputStream.hxx"
-#include "../InputPlugin.hxx"
-#include "tag/Tag.hxx"
-#include "util/StringUtil.hxx"
-#include "Log.hxx"
-
-extern "C" {
-#include <despotify.h>
-}
-
-#include <unistd.h>
-#include <string.h>
-#include <errno.h>
-
-#include <stdio.h>
-
-class DespotifyInputStream final : public InputStream {
-	struct despotify_session *session;
-	struct ds_track *track;
-	Tag tag;
-	struct ds_pcm_data pcm;
-	size_t len_available;
-	bool eof;
-
-	DespotifyInputStream(const char *_uri,
-			     Mutex &_mutex, Cond &_cond,
-			     despotify_session *_session,
-			     ds_track *_track)
-		:InputStream(_uri, _mutex, _cond),
-		 session(_session), track(_track),
-		 tag(mpd_despotify_tag_from_track(*track)),
-		 len_available(0), eof(false) {
-
-		memset(&pcm, 0, sizeof(pcm));
-
-		/* Despotify outputs pcm data */
-		SetMimeType("audio/x-mpd-cdda-pcm");
-		SetReady();
-	}
-
-public:
-	~DespotifyInputStream();
-
-	static InputStream *Open(const char *url, Mutex &mutex, Cond &cond,
-				 Error &error);
-
-	void Callback(int sig);
-
-	/* virtual methods from InputStream */
-
-	bool IsEOF() override {
-		return eof;
-	}
-
-	Tag *ReadTag() override {
-		if (tag.IsEmpty())
-			return nullptr;
-
-		Tag *result = new Tag(std::move(tag));
-		tag.Clear();
-		return result;
-	}
-
-	size_t Read(void *ptr, size_t size, Error &error) override;
-
-private:
-	void FillBuffer();
-};
-
-inline void
-DespotifyInputStream::FillBuffer()
-{
-	/* Wait until there is data */
-	while (1) {
-		int rc = despotify_get_pcm(session, &pcm);
-
-		if (rc == 0 && pcm.len) {
-			len_available = pcm.len;
-			break;
-		}
-
-		if (eof == true)
-			break;
-
-		if (rc < 0) {
-			LogDebug(despotify_domain, "despotify_get_pcm error");
-			eof = true;
-			break;
-		}
-
-		/* Wait a while until next iteration */
-		usleep(50 * 1000);
-	}
-}
-
-inline void
-DespotifyInputStream::Callback(int sig)
-{
-	switch (sig) {
-	case DESPOTIFY_NEW_TRACK:
-		break;
-
-	case DESPOTIFY_TIME_TELL:
-		break;
-
-	case DESPOTIFY_TRACK_PLAY_ERROR:
-		LogWarning(despotify_domain, "Track play error");
-		eof = true;
-		len_available = 0;
-		break;
-
-	case DESPOTIFY_END_OF_PLAYLIST:
-		eof = true;
-		LogDebug(despotify_domain, "End of playlist");
-		break;
-	}
-}
-
-static void callback(gcc_unused struct despotify_session* ds,
-		     int sig, gcc_unused void* data, void* callback_data)
-{
-	DespotifyInputStream *ctx = (DespotifyInputStream *)callback_data;
-
-	ctx->Callback(sig);
-}
-
-DespotifyInputStream::~DespotifyInputStream()
-{
-	mpd_despotify_unregister_callback(callback);
-	despotify_free_track(track);
-}
-
-inline InputStream *
-DespotifyInputStream::Open(const char *url,
-			   Mutex &mutex, Cond &cond,
-			   gcc_unused Error &error)
-{
-	if (!StringStartsWith(url, "spt://"))
-		return nullptr;
-
-	despotify_session *session = mpd_despotify_get_session();
-	if (session == nullptr)
-		return nullptr;
-
-	ds_link *ds_link = despotify_link_from_uri(url + 6);
-	if (!ds_link) {
-		FormatDebug(despotify_domain, "Can't find %s", url);
-		return nullptr;
-	}
-	if (ds_link->type != LINK_TYPE_TRACK) {
-		despotify_free_link(ds_link);
-		return nullptr;
-	}
-
-	ds_track *track = despotify_link_get_track(session, ds_link);
-	despotify_free_link(ds_link);
-	if (!track)
-		return nullptr;
-
-	DespotifyInputStream *ctx =
-		new DespotifyInputStream(url, mutex, cond,
-					 session, track);
-
-	if (!mpd_despotify_register_callback(callback, ctx)) {
-		delete ctx;
-		return nullptr;
-	}
-
-	if (despotify_play(ctx->session, ctx->track, false) == false) {
-		mpd_despotify_unregister_callback(callback);
-		delete ctx;
-		return nullptr;
-	}
-
-	return ctx;
-}
-
-static InputStream *
-input_despotify_open(const char *url, Mutex &mutex, Cond &cond, Error &error)
-{
-	return DespotifyInputStream::Open(url, mutex, cond, error);
-}
-
-size_t
-DespotifyInputStream::Read(void *ptr, size_t read_size,
-			   gcc_unused Error &error)
-{
-	if (len_available == 0)
-		FillBuffer();
-
-	size_t to_cpy = std::min(read_size, len_available);
-	memcpy(ptr, pcm.buf, to_cpy);
-	len_available -= to_cpy;
-
-	offset += to_cpy;
-
-	return to_cpy;
-}
-
-const InputPlugin input_plugin_despotify = {
-	"despotify",
-	nullptr,
-	nullptr,
-	input_despotify_open,
-};

src/input/plugins/MmsInputPlugin.cxx

@@ -43,7 +43,7 @@ protected:
 	virtual size_t ThreadRead(void *ptr, size_t size,
 				  Error &error) override;
 
-	virtual void Close() {
+	void Close() override {
 		mmsx_close(mms);
 	}
 };
@@ -92,6 +92,13 @@ input_mms_open(const char *url,
 size_t
 MmsInputStream::ThreadRead(void *ptr, size_t read_size, Error &error)
 {
+	/* unfortunately, mmsx_read() blocks until the whole buffer
+	   has been filled; to avoid big latencies, limit the size of
+	   each chunk we read to a reasonable size */
+	constexpr size_t MAX_CHUNK = 16384;
+	if (read_size > MAX_CHUNK)
+		read_size = MAX_CHUNK;
+
 	int nbytes = mmsx_read(nullptr, mms, (char *)ptr, read_size);
 	if (nbytes <= 0) {
 		if (nbytes < 0)

src/input/plugins/SmbclientInputPlugin.cxx

@@ -132,6 +132,7 @@ SmbclientInputStream::Read(void *ptr, size_t read_size, Error &error)
 		nbytes = 0;
 	}
 
+	offset += nbytes;
 	return nbytes;
 }
 

src/java/File.hxx

@@ -28,7 +28,7 @@
  */
 
 #ifndef JAVA_FILE_HXX
-#define JAVA_FILE_HPP
+#define JAVA_FILE_HXX
 
 #include "Object.hxx"
 

src/lib/despotify/DespotifyUtils.cxx

@@ -1,153 +0,0 @@
-/*
- * 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.
- */
-
-#include "DespotifyUtils.hxx"
-#include "tag/Tag.hxx"
-#include "tag/TagBuilder.hxx"
-#include "config/ConfigGlobal.hxx"
-#include "config/ConfigOption.hxx"
-#include "util/Domain.hxx"
-#include "Log.hxx"
-
-extern "C" {
-#include <despotify.h>
-}
-
-#include <stdio.h>
-
-const Domain despotify_domain("despotify");
-
-static struct despotify_session *g_session;
-static void (*registered_callbacks[8])(struct despotify_session *,
-		int, void *, void *);
-static void *registered_callback_data[8];
-
-static void
-callback(struct despotify_session* ds, int sig,
-	 void *data, gcc_unused void *callback_data)
-{
-	size_t i;
-
-	for (i = 0; i < sizeof(registered_callbacks) / sizeof(registered_callbacks[0]); i++) {
-		void (*cb)(struct despotify_session *, int, void *, void *) = registered_callbacks[i];
-		void *cb_data = registered_callback_data[i];
-
-		if (cb)
-			cb(ds, sig, data, cb_data);
-	}
-}
-
-bool mpd_despotify_register_callback(void (*cb)(struct despotify_session *, int, void *, void *),
-		void *cb_data)
-{
-	size_t i;
-
-	for (i = 0; i < sizeof(registered_callbacks) / sizeof(registered_callbacks[0]); i++) {
-
-		if (!registered_callbacks[i]) {
-			registered_callbacks[i] = cb;
-			registered_callback_data[i] = cb_data;
-
-			return true;
-		}
-	}
-
-	return false;
-}
-
-void mpd_despotify_unregister_callback(void (*cb)(struct despotify_session *, int, void *, void *))
-{
-	size_t i;
-
-	for (i = 0; i < sizeof(registered_callbacks) / sizeof(registered_callbacks[0]); i++) {
-
-		if (registered_callbacks[i] == cb) {
-			registered_callbacks[i] = nullptr;
-		}
-	}
-}
-
-Tag
-mpd_despotify_tag_from_track(const ds_track &track)
-{
-	char tracknum[20];
-	char comment[80];
-	char date[20];
-
-	if (!track.has_meta_data)
-		return Tag();
-
-	TagBuilder tag;
-	snprintf(tracknum, sizeof(tracknum), "%d", track.tracknumber);
-	snprintf(date, sizeof(date), "%d", track.year);
-	snprintf(comment, sizeof(comment), "Bitrate %d Kbps, %sgeo restricted",
-		 track.file_bitrate / 1000,
-		 track.geo_restricted ? "" : "not ");
-	tag.AddItem(TAG_TITLE, track.title);
-	tag.AddItem(TAG_ARTIST, track.artist->name);
-	tag.AddItem(TAG_TRACK, tracknum);
-	tag.AddItem(TAG_ALBUM, track.album);
-	tag.AddItem(TAG_DATE, date);
-	tag.AddItem(TAG_COMMENT, comment);
-	tag.SetDuration(SignedSongTime::FromMS(track.length));
-
-	return tag.Commit();
-}
-
-struct despotify_session *mpd_despotify_get_session(void)
-{
-	const char *user;
-	const char *passwd;
-	bool high_bitrate;
-
-	if (g_session)
-		return g_session;
-
-	user = config_get_string(CONF_DESPOTIFY_USER, nullptr);
-	passwd = config_get_string(CONF_DESPOTIFY_PASSWORD, nullptr);
-	high_bitrate = config_get_bool(CONF_DESPOTIFY_HIGH_BITRATE, true);
-
-	if (user == nullptr || passwd == nullptr) {
-		LogDebug(despotify_domain,
-			 "disabling despotify because account is not configured");
-		return nullptr;
-	}
-
-	if (!despotify_init()) {
-		LogWarning(despotify_domain, "Can't initialize despotify");
-		return nullptr;
-	}
-
-	g_session = despotify_init_client(callback, nullptr,
-					  high_bitrate, true);
-	if (!g_session) {
-		LogWarning(despotify_domain,
-			   "Can't initialize despotify client");
-		return nullptr;
-	}
-
-	if (!despotify_authenticate(g_session, user, passwd)) {
-		LogWarning(despotify_domain,
-			   "Can't authenticate despotify session");
-		despotify_exit(g_session);
-		return nullptr;
-	}
-
-	return g_session;
-}

src/lib/despotify/DespotifyUtils.hxx

@@ -1,71 +0,0 @@
-/*
- * 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_DESPOTIFY_H
-#define MPD_DESPOTIFY_H
-
-struct Tag;
-struct despotify_session;
-struct ds_track;
-
-extern const class Domain despotify_domain;
-
-/**
- * Return the current despotify session.
- *
- * If the session isn't initialized, this function will initialize
- * it and connect to Spotify.
- *
- * @return a pointer to the despotify session, or nullptr if it can't
- *         be initialized (e.g., if the configuration isn't supplied)
- */
-struct despotify_session *mpd_despotify_get_session(void);
-
-/**
- * Create a MPD tags structure from a spotify track
- *
- * @param track the track to convert
- *
- * @return filled in #Tag structure
- */
-Tag
-mpd_despotify_tag_from_track(const ds_track &track);
-
-/**
- * Register a despotify callback.
- *
- * Despotify calls this e.g., when a track ends.
- *
- * @param cb the callback
- * @param cb_data the data to pass to the callback
- *
- * @return true if the callback could be registered
- */
-bool mpd_despotify_register_callback(void (*cb)(struct despotify_session *, int, void *, void *),
-		void *cb_data);
-
-/**
- * Unregister a despotify callback.
- *
- * @param cb the callback to unregister.
- */
-void mpd_despotify_unregister_callback(void (*cb)(struct despotify_session *, int, void *, void *));
-
-#endif
-

src/lib/icu/Collate.cxx

@@ -121,8 +121,11 @@ gcc_pure
 int
 IcuCollate(const char *a, const char *b)
 {
+#if !CLANG_CHECK_VERSION(3,6)
+	/* disabled on clang due to -Wtautological-pointer-compare */
 	assert(a != nullptr);
 	assert(b != nullptr);
+#endif
 
 #ifdef HAVE_ICU
 	assert(collator != nullptr);
@@ -159,7 +162,10 @@ IcuCaseFold(const char *src)
 {
 #ifdef HAVE_ICU
 	assert(collator != nullptr);
+#if !CLANG_CHECK_VERSION(3,6)
+	/* disabled on clang due to -Wtautological-pointer-compare */
 	assert(src != nullptr);
+#endif
 
 	const auto u = UCharFromUTF8(src);
 	if (u.IsNull())

src/lib/nfs/Blocking.cxx

@@ -20,7 +20,9 @@
 #include "config.h"
 #include "Blocking.hxx"
 #include "Connection.hxx"
+#include "Domain.hxx"
 #include "event/Call.hxx"
+#include "util/Error.hxx"
 
 bool
 BlockingNfsOperation::Run(Error &_error)
@@ -31,7 +33,10 @@ BlockingNfsOperation::Run(Error &_error)
 		    [this](){ connection.AddLease(*this); });
 
 	/* wait for completion */
-	LockWaitFinished();
+	if (!LockWaitFinished()) {
+		_error.Set(nfs_domain, 0, "Timeout");
+		return false;
+	}
 
 	/* check for error */
 	if (error.IsDefined()) {

src/lib/nfs/Blocking.hxx

@@ -35,6 +35,8 @@ class NfsConnection;
  * thread, and method Run() waits for completion.
  */
 class BlockingNfsOperation : protected NfsCallback, NfsLease {
+	static constexpr unsigned timeout_ms = 60000;
+
 	Mutex mutex;
 	Cond cond;
 
@@ -52,10 +54,13 @@ public:
 	bool Run(Error &error);
 
 private:
-	void LockWaitFinished() {
+	bool LockWaitFinished() {
 		const ScopeLock protect(mutex);
 		while (!finished)
-			cond.wait(mutex);
+			if (!cond.timed_wait(mutex, timeout_ms))
+				return false;
+
+		return true;
 	}
 
 	/**

src/lib/nfs/Cancellable.hxx

@@ -157,6 +157,12 @@ public:
 
 		return *i;
 	}
+
+	template<typename F>
+	void ForEach(F &&f) {
+		for (CT &i : list)
+			f(i);
+	}
 };
 
 #endif

src/lib/nfs/Connection.cxx

@@ -34,11 +34,15 @@ extern "C" {
 
 #include <poll.h> /* for POLLIN, POLLOUT */
 
+static constexpr unsigned NFS_MOUNT_TIMEOUT = 60;
+
 inline bool
 NfsConnection::CancellableCallback::Stat(nfs_context *ctx,
 					 const char *path,
 					 Error &error)
 {
+	assert(connection.GetEventLoop().IsInside());
+
 	int result = nfs_stat_async(ctx, path, Callback, this);
 	if (result < 0) {
 		error.Format(nfs_domain, "nfs_stat_async() failed: %s",
@@ -54,6 +58,8 @@ NfsConnection::CancellableCallback::OpenDirectory(nfs_context *ctx,
 						  const char *path,
 						  Error &error)
 {
+	assert(connection.GetEventLoop().IsInside());
+
 	int result = nfs_opendir_async(ctx, path, Callback, this);
 	if (result < 0) {
 		error.Format(nfs_domain, "nfs_opendir_async() failed: %s",
@@ -69,6 +75,8 @@ NfsConnection::CancellableCallback::Open(nfs_context *ctx,
 					 const char *path, int flags,
 					 Error &error)
 {
+	assert(connection.GetEventLoop().IsInside());
+
 	int result = nfs_open_async(ctx, path, flags,
 				    Callback, this);
 	if (result < 0) {
@@ -85,6 +93,8 @@ NfsConnection::CancellableCallback::Stat(nfs_context *ctx,
 					 struct nfsfh *fh,
 					 Error &error)
 {
+	assert(connection.GetEventLoop().IsInside());
+
 	int result = nfs_fstat_async(ctx, fh, Callback, this);
 	if (result < 0) {
 		error.Format(nfs_domain, "nfs_fstat_async() failed: %s",
@@ -100,6 +110,8 @@ NfsConnection::CancellableCallback::Read(nfs_context *ctx, struct nfsfh *fh,
 					 uint64_t offset, size_t size,
 					 Error &error)
 {
+	assert(connection.GetEventLoop().IsInside());
+
 	int result = nfs_pread_async(ctx, fh, offset, size, Callback, this);
 	if (result < 0) {
 		error.Format(nfs_domain, "nfs_pread_async() failed: %s",
@@ -113,6 +125,7 @@ NfsConnection::CancellableCallback::Read(nfs_context *ctx, struct nfsfh *fh,
 inline void
 NfsConnection::CancellableCallback::CancelAndScheduleClose(struct nfsfh *fh)
 {
+	assert(connection.GetEventLoop().IsInside());
 	assert(!open);
 	assert(close_fh == nullptr);
 	assert(fh != nullptr);
@@ -121,9 +134,22 @@ NfsConnection::CancellableCallback::CancelAndScheduleClose(struct nfsfh *fh)
 	Cancel();
 }
 
+inline void
+NfsConnection::CancellableCallback::PrepareDestroyContext()
+{
+	assert(IsCancelled());
+
+	if (close_fh != nullptr) {
+		connection.InternalClose(close_fh);
+		close_fh = nullptr;
+	}
+}
+
 inline void
 NfsConnection::CancellableCallback::Callback(int err, void *data)
 {
+	assert(connection.GetEventLoop().IsInside());
+
 	if (!IsCancelled()) {
 		assert(close_fh == nullptr);
 
@@ -143,8 +169,10 @@ NfsConnection::CancellableCallback::Callback(int err, void *data)
 			   allocated file handle immediately */
 			assert(close_fh == nullptr);
 
-			struct nfsfh *fh = (struct nfsfh *)data;
-			connection.Close(fh);
+			if (err >= 0) {
+				struct nfsfh *fh = (struct nfsfh *)data;
+				connection.Close(fh);
+			}
 		} else if (close_fh != nullptr)
 			connection.DeferClose(close_fh);
 
@@ -209,6 +237,7 @@ NfsConnection::RemoveLease(NfsLease &lease)
 bool
 NfsConnection::Stat(const char *path, NfsCallback &callback, Error &error)
 {
+	assert(GetEventLoop().IsInside());
 	assert(!callbacks.Contains(callback));
 
 	auto &c = callbacks.Add(callback, *this, false);
@@ -225,6 +254,7 @@ bool
 NfsConnection::OpenDirectory(const char *path, NfsCallback &callback,
 			     Error &error)
 {
+	assert(GetEventLoop().IsInside());
 	assert(!callbacks.Contains(callback));
 
 	auto &c = callbacks.Add(callback, *this, true);
@@ -240,12 +270,16 @@ NfsConnection::OpenDirectory(const char *path, NfsCallback &callback,
 const struct nfsdirent *
 NfsConnection::ReadDirectory(struct nfsdir *dir)
 {
+	assert(GetEventLoop().IsInside());
+
 	return nfs_readdir(context, dir);
 }
 
 void
 NfsConnection::CloseDirectory(struct nfsdir *dir)
 {
+	assert(GetEventLoop().IsInside());
+
 	return nfs_closedir(context, dir);
 }
 
@@ -253,6 +287,7 @@ bool
 NfsConnection::Open(const char *path, int flags, NfsCallback &callback,
 		    Error &error)
 {
+	assert(GetEventLoop().IsInside());
 	assert(!callbacks.Contains(callback));
 
 	auto &c = callbacks.Add(callback, *this, true);
@@ -268,6 +303,7 @@ NfsConnection::Open(const char *path, int flags, NfsCallback &callback,
 bool
 NfsConnection::Stat(struct nfsfh *fh, NfsCallback &callback, Error &error)
 {
+	assert(GetEventLoop().IsInside());
 	assert(!callbacks.Contains(callback));
 
 	auto &c = callbacks.Add(callback, *this, false);
@@ -284,6 +320,7 @@ bool
 NfsConnection::Read(struct nfsfh *fh, uint64_t offset, size_t size,
 		    NfsCallback &callback, Error &error)
 {
+	assert(GetEventLoop().IsInside());
 	assert(!callbacks.Contains(callback));
 
 	auto &c = callbacks.Add(callback, *this, false);
@@ -307,10 +344,22 @@ DummyCallback(int, struct nfs_context *, void *, void *)
 {
 }
 
+inline void
+NfsConnection::InternalClose(struct nfsfh *fh)
+{
+	assert(GetEventLoop().IsInside());
+	assert(context != nullptr);
+	assert(fh != nullptr);
+
+	nfs_close_async(context, fh, DummyCallback, nullptr);
+}
+
 void
 NfsConnection::Close(struct nfsfh *fh)
 {
-	nfs_close_async(context, fh, DummyCallback, nullptr);
+	assert(GetEventLoop().IsInside());
+
+	InternalClose(fh);
 	ScheduleSocket();
 }
 
@@ -327,8 +376,26 @@ NfsConnection::DestroyContext()
 	assert(GetEventLoop().IsInside());
 	assert(context != nullptr);
 
+#ifndef NDEBUG
+	assert(!in_destroy);
+	in_destroy = true;
+#endif
+
+	if (!mount_finished) {
+		assert(TimeoutMonitor::IsActive());
+		TimeoutMonitor::Cancel();
+	}
+
+	/* cancel pending DeferredMonitor that was scheduled to notify
+	   new leases */
+	DeferredMonitor::Cancel();
+
 	if (SocketMonitor::IsDefined())
-		SocketMonitor::Cancel();
+		SocketMonitor::Steal();
+
+	callbacks.ForEach([](CancellableCallback &c){
+			c.PrepareDestroyContext();
+		});
 
 	nfs_destroy_context(context);
 	context = nullptr;
@@ -337,8 +404,11 @@ NfsConnection::DestroyContext()
 inline void
 NfsConnection::DeferClose(struct nfsfh *fh)
 {
+	assert(GetEventLoop().IsInside());
 	assert(in_event);
 	assert(in_service);
+	assert(context != nullptr);
+	assert(fh != nullptr);
 
 	deferred_close.push_front(fh);
 }
@@ -346,6 +416,7 @@ NfsConnection::DeferClose(struct nfsfh *fh)
 void
 NfsConnection::ScheduleSocket()
 {
+	assert(GetEventLoop().IsInside());
 	assert(context != nullptr);
 
 	if (!SocketMonitor::IsDefined()) {
@@ -360,9 +431,35 @@ NfsConnection::ScheduleSocket()
 	SocketMonitor::Schedule(libnfs_to_events(nfs_which_events(context)));
 }
 
+inline int
+NfsConnection::Service(unsigned flags)
+{
+	assert(GetEventLoop().IsInside());
+	assert(context != nullptr);
+
+#ifndef NDEBUG
+	assert(!in_event);
+	in_event = true;
+
+	assert(!in_service);
+	in_service = true;
+#endif
+
+	int result = nfs_service(context, events_to_libnfs(flags));
+
+#ifndef NDEBUG
+	assert(context != nullptr);
+	assert(in_service);
+	in_service = false;
+#endif
+
+	return result;
+}
+
 bool
 NfsConnection::OnSocketReady(unsigned flags)
 {
+	assert(GetEventLoop().IsInside());
 	assert(deferred_close.empty());
 
 	bool closed = false;
@@ -374,21 +471,10 @@ NfsConnection::OnSocketReady(unsigned flags)
 		   re-register it each time */
 		SocketMonitor::Steal();
 
-	assert(!in_event);
-	in_event = true;
-
-	assert(!in_service);
-	in_service = true;
-
-	int result = nfs_service(context, events_to_libnfs(flags));
-
-	assert(context != nullptr);
-	assert(in_service);
-	in_service = false;
+	const int result = Service(flags);
 
 	while (!deferred_close.empty()) {
-		nfs_close_async(context, deferred_close.front(),
-				DummyCallback, nullptr);
+		InternalClose(deferred_close.front());
 		deferred_close.pop_front();
 	}
 
@@ -405,13 +491,13 @@ NfsConnection::OnSocketReady(unsigned flags)
 		error.Format(nfs_domain, "NFS connection has failed: %s",
 			     nfs_get_error(context));
 
+		BroadcastError(std::move(error));
+
 		DestroyContext();
 		closed = true;
-
-		BroadcastError(std::move(error));
-	} else if (SocketMonitor::IsDefined() && nfs_get_fd(context) < 0) {
+	} else if (nfs_get_fd(context) < 0) {
 		/* this happens when rpc_reconnect_requeue() is called
-		   after the connection broke, but autoreconnet was
+		   after the connection broke, but autoreconnect was
 		   disabled - nfs_service() returns 0 */
 		Error error;
 		const char *msg = nfs_get_error(context);
@@ -421,14 +507,18 @@ NfsConnection::OnSocketReady(unsigned flags)
 			error.Format(nfs_domain,
 				     "NFS socket disappeared: %s", msg);
 
+		BroadcastError(std::move(error));
+
 		DestroyContext();
 		closed = true;
-
-		BroadcastError(std::move(error));
 	}
 
+	assert(context == nullptr || nfs_get_fd(context) >= 0);
+
+#ifndef NDEBUG
 	assert(in_event);
 	in_event = false;
+#endif
 
 	if (context != nullptr)
 		ScheduleSocket();
@@ -440,10 +530,14 @@ inline void
 NfsConnection::MountCallback(int status, gcc_unused nfs_context *nfs,
 			     gcc_unused void *data)
 {
+	assert(GetEventLoop().IsInside());
 	assert(context == nfs);
 
 	mount_finished = true;
 
+	assert(TimeoutMonitor::IsActive() || in_destroy);
+	TimeoutMonitor::Cancel();
+
 	if (status < 0) {
 		postponed_mount_error.Format(nfs_domain, status,
 					     "nfs_mount_async() failed: %s",
@@ -464,6 +558,7 @@ NfsConnection::MountCallback(int status, nfs_context *nfs, void *data,
 inline bool
 NfsConnection::MountInternal(Error &error)
 {
+	assert(GetEventLoop().IsInside());
 	assert(context == nullptr);
 
 	context = nfs_init_context();
@@ -474,8 +569,14 @@ NfsConnection::MountInternal(Error &error)
 
 	postponed_mount_error.Clear();
 	mount_finished = false;
+
+	TimeoutMonitor::ScheduleSeconds(NFS_MOUNT_TIMEOUT);
+
+#ifndef NDEBUG
 	in_service = false;
 	in_event = false;
+	in_destroy = false;
+#endif
 
 	if (nfs_mount_async(context, server.c_str(), export_name.c_str(),
 			    MountCallback, this) != 0) {
@@ -531,9 +632,23 @@ NfsConnection::BroadcastError(Error &&error)
 	BroadcastMountError(std::move(error));
 }
 
+void
+NfsConnection::OnTimeout()
+{
+	assert(GetEventLoop().IsInside());
+	assert(!mount_finished);
+
+	mount_finished = true;
+	DestroyContext();
+
+	BroadcastMountError(Error(nfs_domain, "Mount timeout"));
+}
+
 void
 NfsConnection::RunDeferred()
 {
+	assert(GetEventLoop().IsInside());
+
 	if (context == nullptr) {
 		Error error;
 		if (!MountInternal(error)) {

src/lib/nfs/Connection.hxx

@@ -23,6 +23,7 @@
 #include "Lease.hxx"
 #include "Cancellable.hxx"
 #include "event/SocketMonitor.hxx"
+#include "event/TimeoutMonitor.hxx"
 #include "event/DeferredMonitor.hxx"
 #include "util/Error.hxx"
 
@@ -40,7 +41,7 @@ class NfsCallback;
 /**
  * An asynchronous connection to a NFS server.
  */
-class NfsConnection : SocketMonitor, DeferredMonitor {
+class NfsConnection : SocketMonitor, TimeoutMonitor, DeferredMonitor {
 	class CancellableCallback : public CancellablePointer<NfsCallback> {
 		NfsConnection &connection;
 
@@ -84,6 +85,13 @@ class NfsConnection : SocketMonitor, DeferredMonitor {
 		 */
 		void CancelAndScheduleClose(struct nfsfh *fh);
 
+		/**
+		 * Called by NfsConnection::DestroyContext() right
+		 * before nfs_destroy_context().  This object is given
+		 * a chance to prepare for the latter.
+		 */
+		void PrepareDestroyContext();
+
 	private:
 		static void Callback(int err, struct nfs_context *nfs,
 				     void *data, void *private_data);
@@ -111,6 +119,7 @@ class NfsConnection : SocketMonitor, DeferredMonitor {
 
 	Error postponed_mount_error;
 
+#ifndef NDEBUG
 	/**
 	 * True when nfs_service() is being called.
 	 */
@@ -122,13 +131,20 @@ class NfsConnection : SocketMonitor, DeferredMonitor {
 	 */
 	bool in_event;
 
+	/**
+	 * True when DestroyContext() is being called.
+	 */
+	bool in_destroy;
+#endif
+
 	bool mount_finished;
 
 public:
 	gcc_nonnull_all
 	NfsConnection(EventLoop &_loop,
 		      const char *_server, const char *_export_name)
-		:SocketMonitor(_loop), DeferredMonitor(_loop),
+		:SocketMonitor(_loop), TimeoutMonitor(_loop),
+		 DeferredMonitor(_loop),
 		 server(_server), export_name(_export_name),
 		 context(nullptr) {}
 
@@ -184,6 +200,11 @@ protected:
 private:
 	void DestroyContext();
 
+	/**
+	 * Wrapper for nfs_close_async().
+	 */
+	void InternalClose(struct nfsfh *fh);
+
 	/**
 	 * Invoke nfs_close_async() after nfs_service() returns.
 	 */
@@ -200,9 +221,17 @@ private:
 
 	void ScheduleSocket();
 
+	/**
+	 * Wrapper for nfs_service().
+	 */
+	int Service(unsigned flags);
+
 	/* virtual methods from SocketMonitor */
 	virtual bool OnSocketReady(unsigned flags) override;
 
+	/* virtual methods from TimeoutMonitor */
+	void OnTimeout() final;
+
 	/* virtual methods from DeferredMonitor */
 	virtual void RunDeferred() override;
 };

src/lib/nfs/FileReader.cxx

@@ -56,8 +56,18 @@ NfsFileReader::Close()
 		return;
 	}
 
+	/* this cancels State::MOUNT */
 	connection->RemoveLease(*this);
 
+	CancelOrClose();
+}
+
+void
+NfsFileReader::CancelOrClose()
+{
+	assert(state != State::INITIAL &&
+	       state != State::DEFER);
+
 	if (state == State::IDLE)
 		/* no async operation in progress: can close
 		   immediately */
@@ -164,6 +174,8 @@ NfsFileReader::OnNfsConnectionFailed(const Error &error)
 {
 	assert(state == State::MOUNT);
 
+	state = State::INITIAL;
+
 	Error copy;
 	copy.Set(error);
 	OnNfsFileError(std::move(copy));
@@ -174,7 +186,7 @@ NfsFileReader::OnNfsConnectionDisconnected(const Error &error)
 {
 	assert(state > State::MOUNT);
 
-	state = State::INITIAL;
+	CancelOrClose();
 
 	Error copy;
 	copy.Set(error);
@@ -246,6 +258,30 @@ NfsFileReader::OnNfsCallback(unsigned status, void *data)
 void
 NfsFileReader::OnNfsError(Error &&error)
 {
+	switch (state) {
+	case State::INITIAL:
+	case State::DEFER:
+	case State::MOUNT:
+	case State::IDLE:
+		assert(false);
+		gcc_unreachable();
+
+	case State::OPEN:
+		connection->RemoveLease(*this);
+		state = State::INITIAL;
+		break;
+
+	case State::STAT:
+		connection->RemoveLease(*this);
+		connection->Close(fh);
+		state = State::INITIAL;
+		break;
+
+	case State::READ:
+		state = State::IDLE;
+		break;
+	}
+
 	OnNfsFileError(std::move(error));
 }
 

src/lib/nfs/FileReader.hxx

@@ -24,6 +24,7 @@
 #include "Lease.hxx"
 #include "Callback.hxx"
 #include "event/DeferredMonitor.hxx"
+#include "Compiler.h"
 
 #include <string>
 
@@ -75,6 +76,12 @@ protected:
 	virtual void OnNfsFileError(Error &&error) = 0;
 
 private:
+	/**
+	 * Cancel the current operation, if any.  The NfsLease must be
+	 * unregistered already.
+	 */
+	void CancelOrClose();
+
 	void OpenCallback(nfsfh *_fh);
 	void StatCallback(const struct stat *st);
 

src/lib/nfs/Manager.cxx

@@ -29,8 +29,10 @@ NfsManager::ManagedConnection::OnNfsConnectionError(Error &&error)
 {
 	FormatError(error, "NFS error on %s:%s", GetServer(), GetExportName());
 
-	manager.connections.erase(manager.connections.iterator_to(*this));
-	delete this;
+	/* defer deletion so the caller
+	   (i.e. NfsConnection::OnSocketReady()) can still use this
+	   object */
+	manager.ScheduleDelete(*this);
 }
 
 inline bool
@@ -59,7 +61,9 @@ NfsManager::Compare::operator()(const ManagedConnection &a,
 
 NfsManager::~NfsManager()
 {
-	assert(loop.IsInside());
+	assert(GetEventLoop().IsInside());
+
+	CollectGarbage();
 
 	connections.clear_and_dispose([](ManagedConnection *c){
 			delete c;
@@ -71,13 +75,13 @@ NfsManager::GetConnection(const char *server, const char *export_name)
 {
 	assert(server != nullptr);
 	assert(export_name != nullptr);
-	assert(loop.IsInside());
+	assert(GetEventLoop().IsInside());
 
 	Map::insert_commit_data hint;
 	auto result = connections.insert_check(LookupKey{server, export_name},
 					       Compare(), hint);
 	if (result.second) {
-		auto c = new ManagedConnection(*this, loop,
+		auto c = new ManagedConnection(*this, GetEventLoop(),
 					       server, export_name);
 		connections.insert_commit(*c, hint);
 		return *c;
@@ -85,3 +89,19 @@ NfsManager::GetConnection(const char *server, const char *export_name)
 		return *result.first;
 	}
 }
+
+void
+NfsManager::CollectGarbage()
+{
+	assert(GetEventLoop().IsInside());
+
+	garbage.clear_and_dispose([](ManagedConnection *c){
+			delete c;
+		});
+}
+
+void
+NfsManager::OnIdle()
+{
+	CollectGarbage();
+}

src/lib/nfs/Manager.hxx

@@ -23,14 +23,16 @@
 #include "check.h"
 #include "Connection.hxx"
 #include "Compiler.h"
+#include "event/IdleMonitor.hxx"
 
 #include <boost/intrusive/set.hpp>
+#include <boost/intrusive/slist.hpp>
 
 /**
  * A manager for NFS connections.  Handles multiple connections to
  * multiple NFS servers.
  */
-class NfsManager {
+class NfsManager final : IdleMonitor {
 	struct LookupKey {
 		const char *server;
 		const char *export_name;
@@ -38,6 +40,7 @@ class NfsManager {
 
 	class ManagedConnection final
 		: public NfsConnection,
+		  public boost::intrusive::slist_base_hook<boost::intrusive::link_mode<boost::intrusive::normal_link>>,
 		  public boost::intrusive::set_base_hook<boost::intrusive::link_mode<boost::intrusive::normal_link>> {
 		NfsManager &manager;
 
@@ -63,8 +66,6 @@ class NfsManager {
 				const LookupKey b) const;
 	};
 
-	EventLoop &loop;
-
 	/**
 	 * Maps server and export_name to #ManagedConnection.
 	 */
@@ -74,9 +75,18 @@ class NfsManager {
 
 	Map connections;
 
+	typedef boost::intrusive::slist<ManagedConnection> List;
+
+	/**
+	 * A list of "garbage" connection objects.  Their destruction
+	 * is postponed because they were thrown into the garbage list
+	 * when callers on the stack were still using them.
+	 */
+	List garbage;
+
 public:
 	NfsManager(EventLoop &_loop)
-		:loop(_loop) {}
+		:IdleMonitor(_loop) {}
 
 	/**
 	 * Must be run from EventLoop's thread.
@@ -86,6 +96,21 @@ public:
 	gcc_pure
 	NfsConnection &GetConnection(const char *server,
 				     const char *export_name);
+
+private:
+	void ScheduleDelete(ManagedConnection &c) {
+		connections.erase(connections.iterator_to(c));
+		garbage.push_front(c);
+		IdleMonitor::Schedule();
+	}
+
+	/**
+	 * Delete all connections on the #garbage list.
+	 */
+	void CollectGarbage();
+
+	/* virtual methods from IdleMonitor */
+	void OnIdle() override;
 };
 
 #endif

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/ls.cxx

@@ -58,9 +58,6 @@ static const char *remoteUrlPrefixes[] = {
 #ifdef ENABLE_CDIO_PARANOIA
 	"cdda://",
 #endif
-#ifdef ENABLE_DESPOTIFY
-	"spt://",
-#endif
 #ifdef HAVE_ALSA
 	"alsa://",
 #endif

src/mixer/MixerAll.cxx

@@ -25,13 +25,10 @@
 #include "output/Internal.hxx"
 #include "pcm/Volume.hxx"
 #include "util/Error.hxx"
-#include "util/Domain.hxx"
 #include "Log.hxx"
 
 #include <assert.h>
 
-static constexpr Domain mixer_domain("mixer");
-
 static int
 output_mixer_get_volume(const AudioOutput &ao)
 {

src/osx/OSXMain.cxx

@@ -1,37 +0,0 @@
-/*
- * 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.
- */
-
-#include "config.h"
-#include "Main.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

src/output/Init.cxx

@@ -48,6 +48,7 @@
 
 AudioOutput::AudioOutput(const AudioOutputPlugin &_plugin)
 	:plugin(_plugin),
+	 mixer(nullptr),
 	 enabled(true), really_enabled(false),
 	 open(false),
 	 pause(false),