release v0.20.17

Due to rounding errors, a slightly negative value can be passed to
set_normalized_volume(), which will make the log10() call fail.
Actually, volume 0 is already failing because log10(0) is illegal.  So
let's fix this by implementing two corner cases: <=0 and >=100.

Closes #212

Makefile.am

@@ -61,8 +61,8 @@ src_mpd_LDADD = \
 	libnet.a \
 	$(FS_LIBS) \
 	libsystem.a \
-	libutil.a \
 	$(ICU_LDADD) \
+	libutil.a \
 	$(SYSTEMD_DAEMON_LIBS)
 
 src_mpd_SOURCES = \
@@ -292,7 +292,7 @@ clean-local:
 libmpd.so: $(filter %.a,$(src_mpd_LDADD)) libmain.a
 	$(AM_V_CXXLD)$(CXXLD) -shared -Wl,--no-undefined,-shared,-Bsymbolic -llog -lz -o $@ $(AM_CXXFLAGS) $(CXXFLAGS) $(LDFLAGS) src/libmain_a-Main.o $(src_mpd_LDADD) $(LIBS)
 
-ANDROID_SDK_BUILD_TOOLS_VERSION = 20.0.0
+ANDROID_SDK_BUILD_TOOLS_VERSION = 27.0.0
 ANDROID_SDK_PLATFORM = android-17
 
 ANDROID_BUILD_TOOLS_DIR = $(ANDROID_SDK)/build-tools/$(ANDROID_SDK_BUILD_TOOLS_VERSION)
@@ -307,7 +307,7 @@ ANDROID_XML_RES := $(wildcard $(srcdir)/android/res/*/*.xml)
 ANDROID_XML_RES_COPIES := $(patsubst $(srcdir)/android/%,android/build/%,$(ANDROID_XML_RES))
 
 JAVA_SOURCE_NAMES = Bridge.java Loader.java Main.java
-JAVA_SOURCES = $(addprefix $(srcdir)/android/src/,$(JAVA_SOURCE_NAMES))
+JAVA_SOURCE_PATHS = $(addprefix $(srcdir)/android/src/,$(JAVA_SOURCE_NAMES))
 
 JAVA_CLASSFILES_DIR = android/build/classes
 
@@ -328,7 +328,7 @@ android/build/resources.apk: $(ANDROID_XML_RES_COPIES) android/build/res/drawabl
 # R.java is generated by aapt, when resources.apk is generated
 android/build/gen/org/musicpd/R.java: android/build/resources.apk
 
-android/build/classes.dex: $(JAVA_SOURCES) android/build/gen/org/musicpd/R.java
+android/build/classes.dex: $(JAVA_SOURCE_PATHS) android/build/gen/org/musicpd/R.java
 	@$(MKDIR_P) $(JAVA_CLASSFILES_DIR)
 	$(JAVAC) -source 1.5 -target 1.5 -Xlint:-options \
 		-cp $(ANDROID_SDK_PLATFORM_DIR)/android.jar:$(JAVA_CLASSFILES_DIR) \
@@ -2159,6 +2159,7 @@ test_run_output_LDADD = $(MPD_LIBS) \
 	libutil.a
 test_run_output_SOURCES = test/run_output.cxx \
 	test/ScopeIOThread.hxx \
+	test/NullMixerListener.hxx \
 	src/Log.cxx src/LogBackend.cxx \
 	src/IOThread.cxx \
 	src/output/Domain.cxx \
@@ -2182,6 +2183,7 @@ test_read_mixer_LDADD = \
 	libsystem.a \
 	libutil.a
 test_read_mixer_SOURCES = test/read_mixer.cxx \
+	test/NullMixerListener.hxx \
 	src/Log.cxx src/LogBackend.cxx \
 	src/mixer/MixerControl.cxx \
 	src/filter/FilterPlugin.cxx \

NEWS

@@ -1,3 +1,22 @@
+ver 0.20.17 (2018/02/11)
+* output
+  - alsa: fix crash bug with 8 channels
+* mixer
+  - alsa: fix rounding error at volume 0
+* fix real-time and idle scheduling with Musl
+* Android
+  - fix compatibility with Android 4.0
+
+ver 0.20.16 (2018/02/03)
+* output
+  - pulse: fix crash during auto-detection
+* database
+  - simple: fix search within mount points
+  - upnp: enable IPv6
+* archive
+  - iso9660: libcdio 2.0 compatibility
+* fix crash in debug build on Haiku and other operating systems
+
 ver 0.20.15 (2018/01/05)
 * queue: fix crash after seek failure
 * resampler

android/AndroidManifest.xml

@@ -2,10 +2,10 @@
 <manifest xmlns:android="http://schemas.android.com/apk/res/android"
           package="org.musicpd"
           android:installLocation="auto"
-          android:versionCode="13"
-          android:versionName="0.19.9">
+          android:versionCode="16"
+          android:versionName="0.20.17">
 
-  <uses-sdk android:minSdkVersion="9" android:targetSdkVersion="17"/>
+  <uses-sdk android:minSdkVersion="14" android:targetSdkVersion="17"/>
 
   <application android:icon="@drawable/icon" android:label="@string/app_name">
     <activity android:name=".Main"

android/build.py

@@ -46,7 +46,7 @@ class AndroidNdkToolchain:
 
         self.ndk_arch = 'arm'
         android_abi = 'armeabi-v7a'
-        ndk_platform = 'android-21'
+        ndk_platform = 'android-14'
 
         # select the NDK compiler
         gcc_version = '4.9'
@@ -65,7 +65,9 @@ class AndroidNdkToolchain:
         llvm_path = os.path.join(ndk_path, 'toolchains', 'llvm', 'prebuilt', build_arch)
         llvm_triple = 'armv7-none-linux-androideabi'
 
-        common_flags = '-march=armv7-a -mfloat-abi=softfp'
+        common_flags = '-Os -g'
+        common_flags += ' -fPIC'
+        common_flags += ' -march=armv7-a -mfpu=vfp -mfloat-abi=softfp'
 
         toolchain_bin = os.path.join(toolchain_path, 'bin')
         llvm_bin = os.path.join(llvm_path, 'bin')
@@ -80,12 +82,12 @@ class AndroidNdkToolchain:
         self.nm = os.path.join(toolchain_bin, arch + '-nm')
         self.strip = os.path.join(toolchain_bin, arch + '-strip')
 
-        self.cflags = '-Os -g ' + common_flags
-        self.cxxflags = '-Os -g ' + common_flags
+        self.cflags = common_flags
+        self.cxxflags = common_flags
         self.cppflags = '--sysroot=' + sysroot + \
             ' -isystem ' + os.path.join(install_prefix, 'include') + \
             ' -isystem ' + os.path.join(sysroot, 'usr', 'include', arch) + \
-            ' -D__ANDROID_API__=21'
+            ' -D__ANDROID_API__=14'
         self.ldflags = '--sysroot=' + sysroot + \
             ' -L' + os.path.join(install_prefix, 'lib') + \
             ' -L' + os.path.join(target_root, 'usr', 'lib') + \
@@ -100,15 +102,13 @@ class AndroidNdkToolchain:
         libcxx_path = os.path.join(ndk_path, 'sources/cxx-stl/llvm-libc++')
         libcxx_libs_path = os.path.join(libcxx_path, 'libs', android_abi)
 
-        libstdcxx_cppflags = '-nostdinc++ -isystem ' + os.path.join(libcxx_path, 'include') + ' -isystem ' + os.path.join(ndk_path, 'sources/android/support/include')
-        libstdcxx_ldadd = os.path.join(libcxx_libs_path, 'libc++_static.a') + ' ' + os.path.join(libcxx_libs_path, 'libc++abi.a')
-
-        if self.is_armv7:
-            libstdcxx_ldadd += ' ' + os.path.join(libcxx_libs_path, 'libunwind.a')
+        libstdcxx_flags = '-stdlib=libc++'
+        libstdcxx_cxxflags = libstdcxx_flags + ' -isystem ' + os.path.join(libcxx_path, 'include') + ' -isystem ' + os.path.join(ndk_path, 'sources/android/support/include')
+        libstdcxx_ldflags = libstdcxx_flags + ' -static-libstdc++ -L' + libcxx_libs_path
 
         if use_cxx:
-            self.libs += ' ' + libstdcxx_ldadd
-            self.cppflags += ' ' + libstdcxx_cppflags
+            self.cxxflags += ' ' + libstdcxx_cxxflags
+            self.ldflags += ' ' + libstdcxx_ldflags
 
         self.env = dict(os.environ)
 

configure.ac

@@ -1,10 +1,10 @@
 AC_PREREQ(2.60)
 
-AC_INIT(mpd, 0.20.15, musicpd-dev-team@lists.sourceforge.net)
+AC_INIT(mpd, 0.20.17, musicpd-dev-team@lists.sourceforge.net)
 
 VERSION_MAJOR=0
 VERSION_MINOR=20
-VERSION_REVISION=15
+VERSION_REVISION=17
 VERSION_EXTRA=0
 
 AC_CONFIG_SRCDIR([src/Main.cxx])

doc/user.xml

@@ -66,6 +66,23 @@
       </para>
     </section>
 
+    <section id="install_android">
+      <title>Installing on Android</title>
+
+      <para>
+        An experimental Android build is available on <ulink
+        url="https://play.google.com/store/apps/details?id=org.musicpd">Google
+        Play</ulink>.  After installing and launching it, MPD will
+        scan the music in your <filename>Music</filename> directory
+        and you can control it as usual with a MPD client.
+      </para>
+
+      <para>
+        If you need to tweak the configuration, you can create a file
+        called <filename>mpd.conf</filename> on the data partition.
+      </para>
+    </section>
+
     <section id="install_source">
       <title>Compiling from source</title>
 
@@ -323,7 +340,9 @@ systemctl start mpd.socket</programlisting>
         <application>MPD</application> as a user daemon (and not as a
         system daemon), the configuration is read from
         <filename>$XDG_CONFIG_HOME/mpd/mpd.conf</filename> (usually
-        <filename>~/.config/mpd/mpd.conf</filename>).
+        <filename>~/.config/mpd/mpd.conf</filename>).  On Android,
+        <filename>mpd.conf</filename> will be loaded from the
+        top-level directory of the data partition.
       </para>
 
       <para>

python/build/autotools.py

@@ -8,6 +8,7 @@ class AutotoolsProject(MakeProject):
                  cppflags='',
                  ldflags='',
                  libs='',
+                 subdirs=None,
                  **kwargs):
         MakeProject.__init__(self, url, md5, installed, **kwargs)
         self.configure_args = configure_args
@@ -15,6 +16,7 @@ class AutotoolsProject(MakeProject):
         self.cppflags = cppflags
         self.ldflags = ldflags
         self.libs = libs
+        self.subdirs = subdirs
 
     def configure(self, toolchain):
         src = self.unpack(toolchain)
@@ -51,4 +53,8 @@ class AutotoolsProject(MakeProject):
 
     def build(self, toolchain):
         build = self.configure(toolchain)
-        MakeProject.build(self, toolchain, build)
+        if self.subdirs is not None:
+            for subdir in self.subdirs:
+                MakeProject.build(self, toolchain, os.path.join(build, subdir))
+        else:
+            MakeProject.build(self, toolchain, build)

python/build/libs.py

@@ -1,4 +1,6 @@
 import re
+from os.path import abspath
+
 from build.project import Project
 from build.zlib import ZlibProject
 from build.autotools import AutotoolsProject
@@ -29,6 +31,8 @@ opus = AutotoolsProject(
     'lib/libopus.a',
     [
         '--disable-shared', '--enable-static',
+        '--disable-doc',
+        '--disable-extra-programs',
     ],
 
     # suppress "visibility default" from opus_defines.h
@@ -42,7 +46,9 @@ flac = AutotoolsProject(
     [
         '--disable-shared', '--enable-static',
         '--disable-xmms-plugin', '--disable-cpplibs',
+        '--disable-doxygen-docs',
     ],
+    subdirs=['include', 'src/libFLAC'],
 )
 
 zlib = ZlibProject(
@@ -83,8 +89,8 @@ libmad = AutotoolsProject(
 )
 
 liblame = AutotoolsProject(
-    'http://downloads.sourceforge.net/project/lame/lame/3.99/lame-3.99.5.tar.gz',
-    '24346b4158e4af3bd9f2e194bb23eb473c75fb7377011523353196b19b9a23ff',
+    'http://downloads.sourceforge.net/project/lame/lame/3.100/lame-3.100.tar.gz',
+    'ddfe36cab873794038ae2c1210557ad34857a4b6bdc515785d1da9e175b1da1e',
     'lib/libmp3lame.a',
     [
         '--disable-shared', '--enable-static',
@@ -335,8 +341,8 @@ ffmpeg = FfmpegProject(
 )
 
 curl = AutotoolsProject(
-    'http://curl.haxx.se/download/curl-7.57.0.tar.xz',
-    'f5f6fd3c72b7b8389969f4fb671ed8532fa9b5bb7a5cae7ca89bc1cea45c7878',
+    'http://curl.haxx.se/download/curl-7.58.0.tar.xz',
+    '6a813875243609eb75f37fa72044e4ad618b55ec15a4eafdac2df6a7e800e3e3',
     'lib/libcurl.a',
     [
         '--disable-shared', '--enable-static',
@@ -354,6 +360,8 @@ curl = AutotoolsProject(
         '--disable-crypto-auth', '--disable-ntlm-wb', '--disable-tls-srp', '--disable-cookies',
         '--without-ssl', '--without-gnutls', '--without-nss', '--without-libssh2',
     ],
+
+    patches='src/lib/curl/patches',
 )
 
 boost = BoostProject(

python/build/project.py

@@ -3,10 +3,12 @@ import re
 
 from build.download import download_and_verify
 from build.tar import untar
+from build.quilt import push_all
 
 class Project:
     def __init__(self, url, md5, installed, name=None, version=None,
                  base=None,
+                 patches=None,
                  edits=None,
                  use_cxx=False):
         if base is None:
@@ -18,7 +20,7 @@ class Project:
             self.base = base
 
         if name is None or version is None:
-            m = re.match(r'^([-\w]+)-(\d[\d.]*[a-z]?)$', self.base)
+            m = re.match(r'^([-\w]+)-(\d[\d.]*[a-z]?[\d.]*)$', self.base)
             if name is None: name = m.group(1)
             if version is None: version = m.group(2)
 
@@ -29,6 +31,10 @@ class Project:
         self.md5 = md5
         self.installed = installed
 
+        if patches is not None:
+            srcdir = os.path.dirname(os.path.dirname(os.path.dirname(__file__)))
+            patches = os.path.join(srcdir, patches)
+        self.patches = patches
         self.edits = edits
         self.use_cxx = use_cxx
 
@@ -51,6 +57,9 @@ class Project:
             parent_path = toolchain.build_path
         path = untar(self.download(toolchain), parent_path, self.base)
 
+        if self.patches is not None:
+            push_all(toolchain, path, self.patches)
+
         if self.edits is not None:
             for filename, function in self.edits.items():
                 with open(os.path.join(path, filename), 'r+t') as f:

python/build/quilt.py

@@ -0,0 +1,9 @@
+import subprocess
+
+def run_quilt(toolchain, cwd, patches_path, *args):
+    env = dict(toolchain.env)
+    env['QUILT_PATCHES'] = patches_path
+    subprocess.check_call(['quilt'] + list(args), cwd=cwd, env=env)
+
+def push_all(toolchain, src_path, patches_path):
+    run_quilt(toolchain, src_path, patches_path, 'push', '-a')

src/IOThread.cxx

@@ -27,12 +27,17 @@
 
 #include <assert.h>
 
-static struct {
+static struct IOThread {
 	Mutex mutex;
 	Cond cond;
 
 	EventLoop *loop;
 	Thread thread;
+
+	IOThread():thread(BIND_THIS_METHOD(Run)) {}
+
+private:
+	void Run() noexcept;
 } io;
 
 void
@@ -44,15 +49,15 @@ io_thread_run(void)
 	io.loop->Run();
 }
 
-static void
-io_thread_func(gcc_unused void *arg)
+inline void
+IOThread::Run() noexcept
 {
 	SetThreadName("io");
 
 	/* lock+unlock to synchronize with io_thread_start(), to be
 	   sure that io.thread is set */
-	io.mutex.lock();
-	io.mutex.unlock();
+	mutex.lock();
+	mutex.unlock();
 
 	io_thread_run();
 }
@@ -73,7 +78,7 @@ io_thread_start()
 	assert(!io.thread.IsDefined());
 
 	const std::lock_guard<Mutex> protect(io.mutex);
-	io.thread.Start(io_thread_func, nullptr);
+	io.thread.Start();
 }
 
 void
@@ -103,8 +108,12 @@ io_thread_get() noexcept
 	return *io.loop;
 }
 
+#ifndef NDEBUG
+
 bool
 io_thread_inside() noexcept
 {
 	return io.thread.IsInside();
 }
+
+#endif

src/IOThread.hxx

@@ -20,6 +20,7 @@
 #ifndef MPD_IO_THREAD_HXX
 #define MPD_IO_THREAD_HXX
 
+#include "check.h"
 #include "Compiler.h"
 
 class EventLoop;
@@ -53,6 +54,8 @@ gcc_const
 EventLoop &
 io_thread_get() noexcept;
 
+#ifndef NDEBUG
+
 /**
  * Is the current thread the I/O thread?
  */
@@ -61,3 +64,5 @@ bool
 io_thread_inside() noexcept;
 
 #endif
+
+#endif

src/MusicPipe.hxx

@@ -95,6 +95,7 @@ public:
 	 */
 	gcc_pure
 	const MusicChunk *Peek() const noexcept {
+		const std::lock_guard<Mutex> protect(mutex);
 		return head;
 	}
 
@@ -120,6 +121,7 @@ public:
 	 */
 	gcc_pure
 	unsigned GetSize() const noexcept {
+		const std::lock_guard<Mutex> protect(mutex);
 		return size;
 	}
 

src/SongFilter.cxx

@@ -24,6 +24,8 @@
 #include "tag/Tag.hxx"
 #include "util/ConstBuffer.hxx"
 #include "util/StringAPI.hxx"
+#include "util/StringCompare.hxx"
+#include "util/StringView.hxx"
 #include "util/ASCII.hxx"
 #include "util/TimeParser.hxx"
 #include "util/UriUtil.hxx"
@@ -59,7 +61,7 @@ locate_parse_type(const char *str) noexcept
 
 SongFilter::Item::Item(unsigned _tag, const char *_value, bool _fold_case)
 	:tag(_tag),
-	 value(AllocatedString<>::Duplicate(_value)),
+	 value(_value),
 	 fold_case(_fold_case ? IcuCompare(value.c_str()) : IcuCompare())
 {
 }
@@ -274,3 +276,33 @@ SongFilter::GetBase() const noexcept
 
 	return nullptr;
 }
+
+SongFilter
+SongFilter::WithoutBasePrefix(const char *_prefix) const noexcept
+{
+	const StringView prefix(_prefix);
+	SongFilter result;
+
+	for (const auto &i : items) {
+		if (i.GetTag() == LOCATE_TAG_BASE_TYPE) {
+			const char *s = StringAfterPrefix(i.GetValue(), prefix);
+			if (s != nullptr) {
+				if (*s == 0)
+					continue;
+
+				if (*s == '/') {
+					++s;
+
+					if (*s != 0)
+						result.items.emplace_back(LOCATE_TAG_BASE_TYPE, s);
+
+					continue;
+				}
+			}
+		}
+
+		result.items.emplace_back(i);
+	}
+
+	return result;
+}

src/SongFilter.hxx

@@ -21,9 +21,9 @@
 #define MPD_SONG_FILTER_HXX
 
 #include "lib/icu/Compare.hxx"
-#include "util/AllocatedString.hxx"
 #include "Compiler.h"
 
+#include <string>
 #include <list>
 
 #include <stdint.h>
@@ -49,7 +49,7 @@ public:
 	class Item {
 		uint8_t tag;
 
-		AllocatedString<> value;
+		std::string value;
 
 		/**
 		 * This value is only set if case folding is enabled.
@@ -66,11 +66,6 @@ public:
 		Item(unsigned tag, const char *value, bool fold_case=false);
 		Item(unsigned tag, time_t time);
 
-		Item(const Item &other) = delete;
-		Item(Item &&) = default;
-
-		Item &operator=(const Item &other) = delete;
-
 		unsigned GetTag() const {
 			return tag;
 		}
@@ -157,6 +152,13 @@ public:
 	 */
 	gcc_pure
 	const char *GetBase() const noexcept;
+
+	/**
+	 * Create a copy of the filter with the given prefix stripped
+	 * from all #LOCATE_TAG_BASE_TYPE items.  This is used to
+	 * filter songs in mounted databases.
+	 */
+	SongFilter WithoutBasePrefix(const char *prefix) const noexcept;
 };
 
 /**

src/SongSave.cxx

@@ -28,6 +28,7 @@
 #include "tag/TagBuilder.hxx"
 #include "util/StringUtil.hxx"
 #include "util/RuntimeError.hxx"
+#include "util/NumberParser.hxx"
 
 #include <string.h>
 #include <stdlib.h>
@@ -94,7 +95,7 @@ song_load(TextFile &file, const char *uri)
 		if ((type = tag_name_parse(line)) != TAG_NUM_OF_ITEM_TYPES) {
 			tag.AddItem(type, value);
 		} else if (strcmp(line, "Time") == 0) {
-			tag.SetDuration(SignedSongTime::FromS(atof(value)));
+			tag.SetDuration(SignedSongTime::FromS(ParseDouble(value)));
 		} else if (strcmp(line, "Playlist") == 0) {
 			tag.SetHasPlaylist(strcmp(value, "yes") == 0);
 		} else if (strcmp(line, SONG_MTIME) == 0) {

src/archive/plugins/Iso9660ArchivePlugin.cxx

@@ -115,7 +115,12 @@ Iso9660ArchiveFile::Visit(char *path, size_t length, size_t capacity,
 			visitor.VisitArchiveEntry(path + 1);
 		}
 	}
+
+#if LIBCDIO_VERSION_NUM >= 20000
+	iso9660_filelist_free(entlist);
+#else
 	_cdio_list_free (entlist, true);
+#endif
 }
 
 static ArchiveFile *

src/db/plugins/simple/Mount.cxx

@@ -20,18 +20,12 @@
 #include "config.h"
 #include "Mount.hxx"
 #include "PrefixedLightSong.hxx"
+#include "SongFilter.hxx"
 #include "db/Selection.hxx"
 #include "db/LightDirectory.hxx"
 #include "db/Interface.hxx"
 #include "fs/Traits.hxx"
 
-#ifdef _LIBCPP_VERSION
-/* workaround for "error: incomplete type 'PlaylistInfo' used in type
-   trait expression" with libc++ version 3900 (from Android NDK
-   r13b) */
-#include "db/PlaylistInfo.hxx"
-#endif
-
 #include <string>
 
 struct PrefixedLightDirectory : LightDirectory {
@@ -93,5 +87,16 @@ WalkMount(const char *base, const Database &db,
 		vp = std::bind(PrefixVisitPlaylist,
 			       base, std::ref(visit_playlist), _1, _2);
 
+	SongFilter prefix_filter;
+
+	if (base != nullptr && filter != nullptr) {
+		/* if the SongFilter contains a LOCATE_TAG_BASE_TYPE
+		   item, copy the SongFilter and drop the mount point
+		   from the filter, because the mounted database
+		   doesn't know its own location within MPD's VFS */
+		prefix_filter = filter->WithoutBasePrefix(base);
+		filter = &prefix_filter;
+	}
+
 	db.Visit(DatabaseSelection(uri, recursive, filter), vd, vs, vp);
 }

src/db/update/Queue.hxx

@@ -49,6 +49,10 @@ struct UpdateQueueItem {
 	bool IsDefined() const {
 		return id != 0;
 	}
+
+	void Clear() {
+		id = 0;
+	}
 };
 
 class UpdateQueue {

src/db/update/Service.cxx

@@ -29,6 +29,7 @@
 #include "Idle.hxx"
 #include "Log.hxx"
 #include "thread/Thread.hxx"
+#include "thread/Name.hxx"
 #include "thread/Util.hxx"
 
 #ifndef NDEBUG
@@ -43,6 +44,7 @@ UpdateService::UpdateService(EventLoop &_loop, SimpleDatabase &_db,
 	:DeferredMonitor(_loop),
 	 db(_db), storage(_storage),
 	 listener(_listener),
+	 update_thread(BIND_THIS_METHOD(Task)),
 	 update_task_id(0),
 	 walk(nullptr)
 {
@@ -112,6 +114,8 @@ UpdateService::Task()
 {
 	assert(walk != nullptr);
 
+	SetThreadName("update");
+
 	if (!next.path_utf8.empty())
 		FormatDebug(update_domain, "starting: %s",
 			    next.path_utf8.c_str());
@@ -140,13 +144,6 @@ UpdateService::Task()
 	DeferredMonitor::Schedule();
 }
 
-void
-UpdateService::Task(void *ctx)
-{
-	UpdateService &service = *(UpdateService *)ctx;
-	return service.Task();
-}
-
 void
 UpdateService::StartThread(UpdateQueueItem &&i)
 {
@@ -158,7 +155,7 @@ UpdateService::StartThread(UpdateQueueItem &&i)
 	next = std::move(i);
 	walk = new UpdateWalk(GetEventLoop(), listener, *next.storage);
 
-	update_thread.Start(Task, this);
+	update_thread.Start();
 
 	FormatDebug(update_domain,
 		    "spawned thread for update job id %i", next.id);
@@ -258,7 +255,7 @@ UpdateService::RunDeferred()
 	delete walk;
 	walk = nullptr;
 
-	next = UpdateQueueItem();
+	next.Clear();
 
 	idle_add(IDLE_UPDATE);
 

src/db/update/Service.hxx

@@ -98,7 +98,6 @@ private:
 
 	/* the update thread */
 	void Task();
-	static void Task(void *ctx);
 
 	void StartThread(UpdateQueueItem &&i);
 

src/decoder/DecoderControl.cxx

@@ -30,7 +30,8 @@
 DecoderControl::DecoderControl(Mutex &_mutex, Cond &_client_cond,
 			       const AudioFormat _configured_audio_format,
 			       const ReplayGainConfig &_replay_gain_config)
-	:mutex(_mutex), client_cond(_client_cond),
+	:thread(BIND_THIS_METHOD(RunThread)),
+	 mutex(_mutex), client_cond(_client_cond),
 	 configured_audio_format(_configured_audio_format),
 	 replay_gain_config(_replay_gain_config) {}
 

src/decoder/DecoderControl.hxx

@@ -415,6 +415,9 @@ public:
 	 * mixramp_start/mixramp_end.
 	 */
 	void CycleMixRamp();
+
+private:
+	void RunThread();
 };
 
 #endif

src/decoder/DecoderThread.cxx

@@ -513,30 +513,28 @@ try {
 	dc.client_cond.signal();
 }
 
-static void
-decoder_task(void *arg)
+void
+DecoderControl::RunThread()
 {
-	DecoderControl &dc = *(DecoderControl *)arg;
-
 	SetThreadName("decoder");
 
-	const std::lock_guard<Mutex> protect(dc.mutex);
+	const std::lock_guard<Mutex> protect(mutex);
 
 	do {
-		assert(dc.state == DecoderState::STOP ||
-		       dc.state == DecoderState::ERROR);
+		assert(state == DecoderState::STOP ||
+		       state == DecoderState::ERROR);
 
-		switch (dc.command) {
+		switch (command) {
 		case DecoderCommand::START:
-			dc.CycleMixRamp();
-			dc.replay_gain_prev_db = dc.replay_gain_db;
-			dc.replay_gain_db = 0;
+			CycleMixRamp();
+			replay_gain_prev_db = replay_gain_db;
+			replay_gain_db = 0;
 
-			decoder_run(dc);
+			decoder_run(*this);
 
-			if (dc.state == DecoderState::ERROR) {
+			if (state == DecoderState::ERROR) {
 				try {
-					std::rethrow_exception(dc.error);
+					std::rethrow_exception(error);
 				} catch (const std::exception &e) {
 					LogError(e);
 				} catch (...) {
@@ -552,20 +550,20 @@ decoder_task(void *arg)
 			/* we need to clear the pipe here; usually the
 			   PlayerThread is responsible, but it is not
 			   aware that the decoder has finished */
-			dc.pipe->Clear(*dc.buffer);
+			pipe->Clear(*buffer);
 
-			decoder_run(dc);
+			decoder_run(*this);
 			break;
 
 		case DecoderCommand::STOP:
-			dc.CommandFinishedLocked();
+			CommandFinishedLocked();
 			break;
 
 		case DecoderCommand::NONE:
-			dc.Wait();
+			Wait();
 			break;
 		}
-	} while (dc.command != DecoderCommand::NONE || !dc.quit);
+	} while (command != DecoderCommand::NONE || !quit);
 }
 
 void
@@ -574,5 +572,5 @@ decoder_thread_start(DecoderControl &dc)
 	assert(!dc.thread.IsDefined());
 
 	dc.quit = false;
-	dc.thread.Start(decoder_task, &dc);
+	dc.thread.Start();
 }

src/event/Loop.cxx

@@ -27,7 +27,7 @@
 #include <algorithm>
 
 EventLoop::EventLoop()
-	:SocketMonitor(*this)
+	:SocketMonitor(*this), quit(false)
 {
 	SocketMonitor::Open(wake_fd.Get());
 	SocketMonitor::Schedule(SocketMonitor::READ);
@@ -46,7 +46,9 @@ EventLoop::~EventLoop()
 void
 EventLoop::Break()
 {
-	quit = true;
+	if (quit.exchange(true))
+		return;
+
 	wake_fd.Write();
 }
 

src/event/Loop.hxx

@@ -30,6 +30,7 @@
 #include "SocketMonitor.hxx"
 
 #include <chrono>
+#include <atomic>
 #include <list>
 #include <set>
 
@@ -82,7 +83,7 @@ class EventLoop final : SocketMonitor
 
 	std::chrono::steady_clock::time_point now = std::chrono::steady_clock::now();
 
-	bool quit = false;
+	std::atomic_bool quit;
 
 	/**
 	 * True when the object has been modified and another check is

src/filter/plugins/ConvertFilterPlugin.cxx

@@ -53,10 +53,16 @@ public:
 	void Set(const AudioFormat &_out_audio_format);
 
 	void Reset() override {
-		state.Reset();
+		if (IsActive())
+			state.Reset();
 	}
 
 	ConstBuffer<void> FilterPCM(ConstBuffer<void> src) override;
+
+private:
+	bool IsActive() const noexcept {
+		return out_audio_format != in_audio_format;
+	}
 };
 
 class PreparedConvertFilter final : public PreparedFilter {
@@ -80,7 +86,7 @@ ConvertFilter::Set(const AudioFormat &_out_audio_format)
 		/* no change */
 		return;
 
-	if (out_audio_format != in_audio_format) {
+	if (IsActive()) {
 		out_audio_format = in_audio_format;
 		state.Close();
 	}
@@ -111,7 +117,7 @@ ConvertFilter::~ConvertFilter()
 {
 	assert(in_audio_format.IsValid());
 
-	if (out_audio_format != in_audio_format)
+	if (IsActive())
 		state.Close();
 }
 
@@ -120,11 +126,10 @@ ConvertFilter::FilterPCM(ConstBuffer<void> src)
 {
 	assert(in_audio_format.IsValid());
 
-	if (out_audio_format == in_audio_format)
+	return IsActive()
+		? state.Convert(src)
 		/* optimized special case: no-op */
-		return src;
-
-	return state.Convert(src);
+		: src;
 }
 
 const FilterPlugin convert_filter_plugin = {

src/input/ThreadInputStream.cxx

@@ -54,10 +54,10 @@ ThreadInputStream::Start()
 	assert(p != nullptr);
 
 	buffer = new CircularBuffer<uint8_t>((uint8_t *)p, buffer_size);
-	thread.Start(ThreadFunc, this);
+	thread.Start();
 }
 
-inline void
+void
 ThreadInputStream::ThreadFunc()
 {
 	FormatThreadName("input:%s", plugin);
@@ -107,13 +107,6 @@ ThreadInputStream::ThreadFunc()
 	Close();
 }
 
-void
-ThreadInputStream::ThreadFunc(void *ctx)
-{
-	ThreadInputStream &tis = *(ThreadInputStream *)ctx;
-	tis.ThreadFunc();
-}
-
 void
 ThreadInputStream::Check()
 {

src/input/ThreadInputStream.hxx

@@ -73,6 +73,7 @@ public:
 			  size_t _buffer_size)
 		:InputStream(_uri, _mutex, _cond),
 		 plugin(_plugin),
+		 thread(BIND_THIS_METHOD(ThreadFunc)),
 		 buffer_size(_buffer_size) {}
 
 	virtual ~ThreadInputStream();
@@ -138,7 +139,6 @@ protected:
 
 private:
 	void ThreadFunc();
-	static void ThreadFunc(void *ctx);
 };
 
 #endif

src/input/plugins/FileInputPlugin.cxx

@@ -65,9 +65,12 @@ OpenFileInputStream(Path path,
 		throw FormatRuntimeError("Not a regular file: %s",
 					 path.c_str());
 
+#if !defined(__BIONIC__) || __ANDROID_API__ >= 21
+	/* posix_fadvise() requires Android API 21 */
 #ifdef POSIX_FADV_SEQUENTIAL
 	posix_fadvise(reader.GetFD().Get(), (off_t)0, info.GetSize(),
 		      POSIX_FADV_SEQUENTIAL);
+#endif
 #endif
 
 	return InputStreamPtr(new FileInputStream(path.ToUTF8().c_str(),

src/lib/curl/patches/no_netrc.patch

@@ -0,0 +1,20 @@
+Index: curl-7.58.0/lib/url.c
+===================================================================
+--- curl-7.58.0.orig/lib/url.c
++++ curl-7.58.0/lib/url.c
+@@ -3503,6 +3503,7 @@ static CURLcode override_login(struct Cu
+   }
+ 
+   conn->bits.netrc = FALSE;
++#ifndef __BIONIC__
+   if(data->set.use_netrc != CURL_NETRC_IGNORED) {
+     int ret = Curl_parsenetrc(conn->host.name,
+                               userp, passwdp,
+@@ -3524,6 +3525,7 @@ static CURLcode override_login(struct Cu
+       conn->bits.user_passwd = TRUE; /* enable user+password */
+     }
+   }
++#endif
+ 
+   return CURLE_OK;
+ }

src/lib/curl/patches/only_lib.patch

@@ -0,0 +1,15 @@
+Index: curl-7.58.0/Makefile.in
+===================================================================
+--- curl-7.58.0.orig/Makefile.in
++++ curl-7.58.0/Makefile.in
+@@ -641,8 +641,8 @@ CLEANFILES = $(VC6_LIBDSP) $(VC6_SRCDSP)
+  $(VC14_LIBVCXPROJ) $(VC14_SRCVCXPROJ) $(VC15_LIBVCXPROJ) $(VC15_SRCVCXPROJ)
+ 
+ bin_SCRIPTS = curl-config
+-SUBDIRS = lib src
+-DIST_SUBDIRS = $(SUBDIRS) tests packages scripts include docs
++SUBDIRS = lib
++DIST_SUBDIRS = $(SUBDIRS) include
+ pkgconfigdir = $(libdir)/pkgconfig
+ pkgconfig_DATA = libcurl.pc
+ LIB_VAUTH_CFILES = vauth/vauth.c vauth/cleartext.c vauth/cram.c         \

src/lib/curl/patches/series

@@ -0,0 +1,2 @@
+only_lib.patch
+no_netrc.patch

src/lib/icu/Compare.hxx

@@ -37,6 +37,18 @@ public:
 
 	explicit IcuCompare(const char *needle) noexcept;
 
+	IcuCompare(const IcuCompare &src) noexcept
+		:needle(src
+			? AllocatedString<>::Duplicate(src.needle.c_str())
+			: nullptr) {}
+
+	IcuCompare &operator=(const IcuCompare &src) noexcept {
+		needle = src
+			? AllocatedString<>::Duplicate(src.needle.c_str())
+			: nullptr;
+		return *this;
+	}
+
 	IcuCompare(IcuCompare &&) = default;
 	IcuCompare &operator=(IcuCompare &&) = default;
 

src/lib/upnp/Init.cxx

@@ -34,7 +34,11 @@ static unsigned upnp_ref;
 static void
 DoInit()
 {
-	auto code = UpnpInit(0, 0);
+#ifdef UPNP_ENABLE_IPV6
+	auto code = UpnpInit2(nullptr, 0);
+#else
+	auto code = UpnpInit(nullptr, 0);
+#endif
 	if (code != UPNP_E_SUCCESS)
 		throw FormatRuntimeError("UpnpInit() failed: %s",
 					 UpnpGetErrorMessage(code));

src/mixer/plugins/volume_mapping.c

@@ -139,6 +139,13 @@ static int set_normalized_volume(snd_mixer_elem_t *elem,
 		return set_raw[ctl_dir](elem, value);
 	}
 
+	/* two special cases to avoid rounding errors at 0% and
+	   100% */
+	if (volume <= 0)
+		return set_dB[ctl_dir](elem, min, dir);
+	else if (volume >= 100)
+		return set_dB[ctl_dir](elem, max, dir);
+
 	if (use_linear_dB_scale(min, max)) {
 		value = lrint_dir(volume * (max - min), dir) + min;
 		return set_dB[ctl_dir](elem, value, dir);

src/neighbor/plugins/SmbclientNeighborPlugin.cxx

@@ -69,7 +69,8 @@ class SmbclientNeighborExplorer final : public NeighborExplorer {
 
 public:
 	SmbclientNeighborExplorer(NeighborListener &_listener)
-		:NeighborExplorer(_listener) {}
+		:NeighborExplorer(_listener),
+		 thread(BIND_THIS_METHOD(ThreadFunc)) {}
 
 	/* virtual methods from class NeighborExplorer */
 	void Open() override;
@@ -79,14 +80,13 @@ public:
 private:
 	void Run();
 	void ThreadFunc();
-	static void ThreadFunc(void *ctx);
 };
 
 void
 SmbclientNeighborExplorer::Open()
 {
 	quit = false;
-	thread.Start(ThreadFunc, this);
+	thread.Start();
 }
 
 void
@@ -239,6 +239,8 @@ SmbclientNeighborExplorer::Run()
 inline void
 SmbclientNeighborExplorer::ThreadFunc()
 {
+	SetThreadName("smbclient");
+
 	mutex.lock();
 
 	while (!quit) {
@@ -257,15 +259,6 @@ SmbclientNeighborExplorer::ThreadFunc()
 	mutex.unlock();
 }
 
-void
-SmbclientNeighborExplorer::ThreadFunc(void *ctx)
-{
-	SetThreadName("smbclient");
-
-	SmbclientNeighborExplorer &e = *(SmbclientNeighborExplorer *)ctx;
-	e.ThreadFunc();
-}
-
 static NeighborExplorer *
 smbclient_neighbor_create(gcc_unused EventLoop &loop,
 			  NeighborListener &listener,

src/output/Init.cxx

@@ -51,7 +51,8 @@
 
 AudioOutput::AudioOutput(const AudioOutputPlugin &_plugin,
 			 const ConfigBlock &block)
-	:plugin(_plugin)
+	:plugin(_plugin),
+	 thread(BIND_THIS_METHOD(Task))
 {
 	assert(plugin.finish != nullptr);
 	assert(plugin.open != nullptr);

src/output/Internal.hxx

@@ -515,7 +515,6 @@ private:
 	 * The OutputThread.
 	 */
 	void Task();
-	static void Task(void *arg);
 };
 
 /**

src/output/OutputThread.cxx

@@ -396,7 +396,7 @@ AudioOutput::Pause()
 	pause = false;
 }
 
-inline void
+void
 AudioOutput::Task()
 {
 	FormatThreadName("output:%s", name);
@@ -512,17 +512,10 @@ AudioOutput::Task()
 	}
 }
 
-void
-AudioOutput::Task(void *arg)
-{
-	AudioOutput *ao = (AudioOutput *)arg;
-	ao->Task();
-}
-
 void
 AudioOutput::StartThread()
 {
 	assert(command == Command::NONE);
 
-	thread.Start(Task, this);
+	thread.Start();
 }

src/output/plugins/PulseOutputPlugin.cxx

@@ -27,6 +27,7 @@
 #include "../Wrapper.hxx"
 #include "mixer/MixerList.hxx"
 #include "mixer/plugins/PulseMixerPlugin.hxx"
+#include "util/ScopeExit.hxx"
 #include "Log.hxx"
 
 #include <pulse/thread-mainloop.h>
@@ -854,7 +855,10 @@ PulseOutput::TestDefaultDevice()
 try {
 	const ConfigBlock empty;
 	PulseOutput po(empty);
+	po.Enable();
+	AtScopeExit(&po) { po.Disable(); };
 	po.WaitConnection();
+
 	return true;
 } catch (const std::runtime_error &e) {
 	return false;

src/pcm/Order.cxx

@@ -88,7 +88,7 @@ static inline ConstBuffer<V>
 ToAlsaChannelOrder71(PcmBuffer &buffer, ConstBuffer<V> src)
 {
 	auto dest = buffer.GetT<V>(src.size);
-	ToAlsaChannelOrder71(dest, src.data, src.size / 6);
+	ToAlsaChannelOrder71(dest, src.data, src.size / 8);
 	return { dest, src.size };
 }
 

src/player/Control.cxx

@@ -37,6 +37,7 @@ PlayerControl::PlayerControl(PlayerListener &_listener,
 	 buffer_chunks(_buffer_chunks),
 	 buffered_before_play(_buffered_before_play),
 	 configured_audio_format(_configured_audio_format),
+	 thread(BIND_THIS_METHOD(RunThread)),
 	 replay_gain_config(_replay_gain_config)
 {
 }

src/player/Control.hxx

@@ -537,6 +537,9 @@ public:
 	void ApplyEnabled() override {
 		LockUpdateAudio();
 	}
+
+private:
+	void RunThread();
 };
 
 #endif

src/player/Thread.cxx

@@ -1147,91 +1147,89 @@ do_play(PlayerControl &pc, DecoderControl &dc,
 	player.Run();
 }
 
-static void
-player_task(void *arg)
+void
+PlayerControl::RunThread()
 {
-	PlayerControl &pc = *(PlayerControl *)arg;
-
 	SetThreadName("player");
 
-	DecoderControl dc(pc.mutex, pc.cond,
-			  pc.configured_audio_format,
-			  pc.replay_gain_config);
+	DecoderControl dc(mutex, cond,
+			  configured_audio_format,
+			  replay_gain_config);
 	decoder_thread_start(dc);
 
-	MusicBuffer buffer(pc.buffer_chunks);
+	MusicBuffer buffer(buffer_chunks);
 
-	pc.Lock();
+	Lock();
 
 	while (1) {
-		switch (pc.command) {
+		switch (command) {
 		case PlayerCommand::SEEK:
 		case PlayerCommand::QUEUE:
-			assert(pc.next_song != nullptr);
+			assert(next_song != nullptr);
 
-			pc.Unlock();
-			do_play(pc, dc, buffer);
-			pc.listener.OnPlayerSync();
-			pc.Lock();
+			Unlock();
+			do_play(*this, dc, buffer);
+			listener.OnPlayerSync();
+			Lock();
 			break;
 
 		case PlayerCommand::STOP:
-			pc.Unlock();
-			pc.outputs.Cancel();
-			pc.Lock();
+			Unlock();
+			outputs.Cancel();
+			Lock();
 
 			/* fall through */
 
 		case PlayerCommand::PAUSE:
-			delete pc.next_song;
-			pc.next_song = nullptr;
+			delete next_song;
+			next_song = nullptr;
 
-			pc.CommandFinished();
+			CommandFinished();
 			break;
 
 		case PlayerCommand::CLOSE_AUDIO:
-			pc.Unlock();
+			Unlock();
 
-			pc.outputs.Release();
+			outputs.Release();
 
-			pc.Lock();
-			pc.CommandFinished();
+			Lock();
+			CommandFinished();
 
 			assert(buffer.IsEmptyUnsafe());
 
 			break;
 
 		case PlayerCommand::UPDATE_AUDIO:
-			pc.Unlock();
-			pc.outputs.EnableDisable();
-			pc.Lock();
-			pc.CommandFinished();
+			Unlock();
+			outputs.EnableDisable();
+			Lock();
+			CommandFinished();
 			break;
 
 		case PlayerCommand::EXIT:
-			pc.Unlock();
+			Unlock();
 
 			dc.Quit();
 
-			pc.outputs.Close();
+			outputs.Close();
 
-			pc.LockCommandFinished();
+			LockCommandFinished();
 			return;
 
 		case PlayerCommand::CANCEL:
-			delete pc.next_song;
-			pc.next_song = nullptr;
+			delete next_song;
+			next_song = nullptr;
 
-			pc.CommandFinished();
+			CommandFinished();
 			break;
 
 		case PlayerCommand::REFRESH:
 			/* no-op when not playing */
-			pc.CommandFinished();
+			CommandFinished();
 			break;
 
 		case PlayerCommand::NONE:
-			pc.Wait();
+			Wait();
 			break;
 		}
 	}
@@ -1242,5 +1240,5 @@ StartPlayerThread(PlayerControl &pc)
 {
 	assert(!pc.thread.IsDefined());
 
-	pc.thread.Start(player_task, &pc);
+	pc.thread.Start();
 }

src/playlist/plugins/SoundCloudPlaylistPlugin.cxx

@@ -313,7 +313,7 @@ soundcloud_open_uri(const char *uri, Mutex &mutex, Cond &cond)
 
 	SoundCloudJsonData data;
 	yajl_handle hand = yajl_alloc(&parse_callbacks, nullptr, &data);
-	AtScopeExit(hand, &data) { yajl_free(hand); };
+	AtScopeExit(hand) { yajl_free(hand); };
 
 	int ret = soundcloud_parse_json(u, hand, mutex, cond);
 

src/protocol/ArgParser.cxx

@@ -21,6 +21,7 @@
 #include "ArgParser.hxx"
 #include "Ack.hxx"
 #include "Chrono.hxx"
+#include "util/NumberParser.hxx"
 
 #include <stdlib.h>
 
@@ -151,7 +152,7 @@ float
 ParseCommandArgFloat(const char *s)
 {
 	char *endptr;
-	auto value = strtof(s, &endptr);
+	auto value = ParseFloat(s, &endptr);
 	if (endptr == s || *endptr != 0)
 		throw FormatProtocolError(ACK_ERROR_ARG,
 					  "Float expected: %s", s);

src/queue/PlaylistState.cxx

@@ -35,6 +35,7 @@
 #include "util/CharUtil.hxx"
 #include "util/StringAPI.hxx"
 #include "util/StringCompare.hxx"
+#include "util/NumberParser.hxx"
 #include "Log.hxx"
 
 #include <string.h>
@@ -148,7 +149,7 @@ playlist_state_restore(const char *line, TextFile &file,
 	while ((line = file.ReadLine()) != nullptr) {
 		const char *p;
 		if ((p = StringAfterPrefix(line, PLAYLIST_STATE_FILE_TIME))) {
-			seek_time = SongTime::FromS(atof(p));
+			seek_time = SongTime::FromS(ParseDouble(p));
 		} else if ((p = StringAfterPrefix(line, PLAYLIST_STATE_FILE_REPEAT))) {
 			playlist.SetRepeat(pc, StringIsEqual(p, "1"));
 		} else if ((p = StringAfterPrefix(line, PLAYLIST_STATE_FILE_SINGLE))) {
@@ -158,12 +159,12 @@ playlist_state_restore(const char *line, TextFile &file,
 		} else if ((p = StringAfterPrefix(line, PLAYLIST_STATE_FILE_CROSSFADE))) {
 			pc.SetCrossFade(atoi(p));
 		} else if ((p = StringAfterPrefix(line, PLAYLIST_STATE_FILE_MIXRAMPDB))) {
-			pc.SetMixRampDb(atof(p));
+			pc.SetMixRampDb(ParseFloat(p));
 		} else if ((p = StringAfterPrefix(line, PLAYLIST_STATE_FILE_MIXRAMPDELAY))) {
 			/* this check discards "nan" which was used
 			   prior to MPD 0.18 */
 			if (IsDigitASCII(*p))
-				pc.SetMixRampDelay(atof(p));
+				pc.SetMixRampDelay(ParseFloat(p));
 		} else if ((p = StringAfterPrefix(line, PLAYLIST_STATE_FILE_RANDOM))) {
 			random_mode = StringIsEqual(p, "1");
 		} else if ((p = StringAfterPrefix(line, PLAYLIST_STATE_FILE_CURRENT))) {

src/tag/ReplayGain.cxx

@@ -22,6 +22,7 @@
 #include "VorbisComment.hxx"
 #include "ReplayGainInfo.hxx"
 #include "util/ASCII.hxx"
+#include "util/NumberParser.hxx"
 
 #include <assert.h>
 #include <stdlib.h>
@@ -33,16 +34,16 @@ ParseReplayGainTagTemplate(ReplayGainInfo &info, const T t)
 	const char *value;
 
 	if ((value = t["replaygain_track_gain"]) != nullptr) {
-		info.track.gain = atof(value);
+		info.track.gain = ParseFloat(value);
 		return true;
 	} else if ((value = t["replaygain_album_gain"]) != nullptr) {
-		info.album.gain = atof(value);
+		info.album.gain = ParseFloat(value);
 		return true;
 	} else if ((value = t["replaygain_track_peak"]) != nullptr) {
-		info.track.peak = atof(value);
+		info.track.peak = ParseFloat(value);
 		return true;
 	} else if ((value = t["replaygain_album_peak"]) != nullptr) {
-		info.album.peak = atof(value);
+		info.album.peak = ParseFloat(value);
 		return true;
 	} else
 		return false;

src/thread/Id.hxx

@@ -52,13 +52,11 @@ public:
 	constexpr ThreadId(pthread_t _id):id(_id) {}
 #endif
 
-	gcc_const
-	static ThreadId Null() noexcept {
+	static constexpr ThreadId Null() noexcept {
 #ifdef _WIN32
 		return 0;
 #else
-		static ThreadId null;
-		return null;
+		return pthread_t();
 #endif
 	}
 
@@ -81,11 +79,13 @@ public:
 
 	gcc_pure
 	bool operator==(const ThreadId &other) const noexcept {
-#ifdef _WIN32
+		/* note: not using pthread_equal() because that
+		   function "is undefined if either thread ID is not
+		   valid so we can't safely use it on
+		   default-constructed values" (comment from
+		   libstdc++) - and if both libstdc++ and libc++ get
+		   away with this, we can do it as well */
 		return id == other.id;
-#else
-		return pthread_equal(id, other.id);
-#endif
 	}
 
 	/**

src/thread/Thread.cxx

@@ -25,39 +25,21 @@
 #include "java/Global.hxx"
 #endif
 
-bool
-Thread::Start(void (*_f)(void *ctx), void *_ctx)
+void
+Thread::Start()
 {
 	assert(!IsDefined());
 
-	f = _f;
-	ctx = _ctx;
-
 #ifdef _WIN32
 	handle = ::CreateThread(nullptr, 0, ThreadProc, this, 0, &id);
 	if (handle == nullptr)
 		throw MakeLastError("Failed to create thread");
 #else
-#ifndef NDEBUG
-	creating = true;
-#endif
-
 	int e = pthread_create(&handle, nullptr, ThreadProc, this);
 
-	if (e != 0) {
-#ifndef NDEBUG
-		creating = false;
-#endif
+	if (e != 0)
 		throw MakeErrno(e, "Failed to create thread");
-	}
-
-	defined = true;
-#ifndef NDEBUG
-	creating = false;
 #endif
-#endif
-
-	return true;
 }
 
 void
@@ -72,7 +54,17 @@ Thread::Join()
 	handle = nullptr;
 #else
 	pthread_join(handle, nullptr);
-	defined = false;
+	handle = pthread_t();
+#endif
+}
+
+inline void
+Thread::Run()
+{
+	f();
+
+#ifdef ANDROID
+	Java::DetachCurrentThread();
 #endif
 }
 
@@ -83,7 +75,7 @@ Thread::ThreadProc(LPVOID ctx)
 {
 	Thread &thread = *(Thread *)ctx;
 
-	thread.f(thread.ctx);
+	thread.Run();
 	return 0;
 }
 
@@ -95,18 +87,10 @@ Thread::ThreadProc(void *ctx)
 	Thread &thread = *(Thread *)ctx;
 
 #ifndef NDEBUG
-	/* this works around a race condition that causes an assertion
-	   failure due to IsInside() spuriously returning false right
-	   after the thread has been created, and the calling thread
-	   hasn't initialised "defined" yet */
-	thread.defined = true;
+	thread.inside_handle = pthread_self();
 #endif
 
-	thread.f(thread.ctx);
-
-#ifdef ANDROID
-	Java::DetachCurrentThread();
-#endif
+	thread.Run();
 
 	return nullptr;
 }

src/thread/Thread.hxx

@@ -21,6 +21,7 @@
 #define MPD_THREAD_HXX
 
 #include "check.h"
+#include "util/BindMethod.hxx"
 #include "Compiler.h"
 
 #ifdef _WIN32
@@ -32,28 +33,28 @@
 #include <assert.h>
 
 class Thread {
+	typedef BoundMethod<void()> Function;
+	const Function f;
+
 #ifdef _WIN32
 	HANDLE handle = nullptr;
 	DWORD id;
 #else
-	pthread_t handle;
-	bool defined = false;
+	pthread_t handle = pthread_t();
 
 #ifndef NDEBUG
 	/**
-	 * The thread is currently being created.  This is a workaround for
-	 * IsInside(), which may return false until pthread_create() has
-	 * initialised the #handle.
+	 * This handle is only used by IsInside(), and is set by the
+	 * thread function.  Since #handle is set by pthread_create()
+	 * which is racy, we need this attribute for early checks
+	 * inside the thread function.
 	 */
-	bool creating = false;
+	pthread_t inside_handle = pthread_t();
 #endif
 #endif
 
-	void (*f)(void *ctx);
-	void *ctx;
-
 public:
-	Thread() = default;
+	explicit Thread(Function _f):f(_f) {}
 
 	Thread(const Thread &) = delete;
 
@@ -69,10 +70,11 @@ public:
 #ifdef _WIN32
 		return handle != nullptr;
 #else
-		return defined;
+		return handle != pthread_t();
 #endif
-  }
+	}
 
+#ifndef NDEBUG
 	/**
 	 * Check if this thread is the current thread.
 	 */
@@ -81,18 +83,23 @@ public:
 #ifdef _WIN32
 		return GetCurrentThreadId() == id;
 #else
-#ifdef NDEBUG
-		constexpr bool creating = false;
-#endif
-		return IsDefined() && (creating ||
-				       pthread_equal(pthread_self(), handle));
+		/* note: not using pthread_equal() because that
+		   function "is undefined if either thread ID is not
+		   valid so we can't safely use it on
+		   default-constructed values" (comment from
+		   libstdc++) - and if both libstdc++ and libc++ get
+		   away with this, we can do it as well */
+		return pthread_self() == inside_handle;
 #endif
 	}
+#endif
 
-	bool Start(void (*f)(void *ctx), void *ctx);
+	void Start();
 	void Join();
 
 private:
+	void Run();
+
 #ifdef _WIN32
 	static DWORD WINAPI ThreadProc(LPVOID ctx);
 #else

src/thread/Util.cxx

@@ -38,10 +38,12 @@
 #include <windows.h>
 #endif
 
-#if defined(__linux__) && !defined(ANDROID)
+#ifdef __linux__
+
+#ifndef ANDROID
 
 static int
-ioprio_set(int which, int who, int ioprio)
+linux_ioprio_set(int which, int who, int ioprio)
 {
 	return syscall(__NR_ioprio_set, which, who, ioprio);
 }
@@ -55,7 +57,20 @@ ioprio_set_idle()
 	static constexpr int _IOPRIO_IDLE =
 		(_IOPRIO_CLASS_IDLE << _IOPRIO_CLASS_SHIFT) | 7;
 
-	ioprio_set(_IOPRIO_WHO_PROCESS, 0, _IOPRIO_IDLE);
+	linux_ioprio_set(_IOPRIO_WHO_PROCESS, 0, _IOPRIO_IDLE);
+}
+
+#endif /* !ANDROID */
+
+/**
+ * Wrapper for the "sched_setscheduler" system call.  We don't use the
+ * one from the C library because Musl has an intentionally broken
+ * implementation.
+ */
+static int
+linux_sched_setscheduler(pid_t pid, int sched, const struct sched_param *param)
+{
+	return syscall(__NR_sched_setscheduler, pid, sched, param);
 }
 
 #endif
@@ -66,7 +81,7 @@ SetThreadIdlePriority()
 #ifdef __linux__
 #ifdef SCHED_IDLE
 	static struct sched_param sched_param;
-	sched_setscheduler(0, SCHED_IDLE, &sched_param);
+	linux_sched_setscheduler(0, SCHED_IDLE, &sched_param);
 #endif
 
 #ifndef ANDROID
@@ -92,7 +107,7 @@ SetThreadRealtime()
 	policy |= SCHED_RESET_ON_FORK;
 #endif
 
-	if (sched_setscheduler(0, policy, &sched_param) < 0)
+	if (linux_sched_setscheduler(0, policy, &sched_param) < 0)
 		throw MakeErrno("sched_setscheduler failed");
 #endif	// __linux__
 };

src/util/NumberParser.hxx

@@ -78,7 +78,12 @@ ParseDouble(const char *p, char **endptr=nullptr)
 static inline float
 ParseFloat(const char *p, char **endptr=nullptr)
 {
+#if defined(__BIONIC__) && __ANDROID_API__ < 21
+	/* strtof() requires API level 21 */
 	return (float)ParseDouble(p, endptr);
+#else
+	return strtof(p, endptr);
+#endif
 }
 
 #endif

src/util/RefCount.hxx

@@ -42,11 +42,6 @@ class RefCount {
 	std::atomic_uint n;
 
 public:
-#ifndef _LIBCPP_VERSION
-	/* the "constexpr" is missing in libc++'s "atomic"
-	   implementation */
-	constexpr
-#endif
 	RefCount():n(1) {}
 
 	void Increment() {

test/NullMixerListener.hxx

@@ -0,0 +1,30 @@
+/*
+ * Copyright 2003-2018 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 NULL_MIXER_LISTENER_HXX
+#define NULL_MIXER_LISTENER_HXX
+
+#include "mixer/Listener.hxx"
+
+class NullMixerListener : public MixerListener {
+public:
+	void OnMixerVolumeChanged(Mixer &, int) override {}
+};
+
+#endif

test/read_mixer.cxx

@@ -18,6 +18,7 @@
  */
 
 #include "config.h"
+#include "NullMixerListener.hxx"
 #include "mixer/MixerControl.hxx"
 #include "mixer/MixerList.hxx"
 #include "filter/FilterRegistry.hxx"
@@ -50,9 +51,14 @@ try {
 
 	EventLoop event_loop;
 
+	NullMixerListener mixer_listener;
 	Mixer *mixer = mixer_new(event_loop, alsa_mixer_plugin,
-				 *(AudioOutput *)nullptr,
-				 *(MixerListener *)nullptr,
+				 /* ugly dangerous dummy pointer to
+				    make the compiler happy; this
+				    works with most mixers, because
+				    they don't need the AudioOutput */
+				 *(AudioOutput *)0x1,
+				 mixer_listener,
 				 ConfigBlock());
 
 	mixer_open(mixer);

test/run_output.cxx

@@ -18,6 +18,7 @@
  */
 
 #include "config.h"
+#include "NullMixerListener.hxx"
 #include "output/Internal.hxx"
 #include "output/OutputPlugin.hxx"
 #include "output/Client.hxx"
@@ -44,6 +45,8 @@
 #include <stdlib.h>
 #include <stdio.h>
 
+void AudioOutput::Task() {}
+
 class DummyAudioOutputClient final : public AudioOutputClient {
 public:
 	/* virtual methods from AudioOutputClient */
@@ -62,7 +65,9 @@ filter_plugin_by_name(gcc_unused const char *name) noexcept
 }
 
 static AudioOutput *
-load_audio_output(EventLoop &event_loop, AudioOutputClient &client,
+load_audio_output(EventLoop &event_loop,
+		  NullMixerListener &mixer_listener,
+		  AudioOutputClient &client,
 		  const char *name)
 {
 	const auto *param = config_find_block(ConfigBlockOption::AUDIO_OUTPUT,
@@ -72,7 +77,7 @@ load_audio_output(EventLoop &event_loop, AudioOutputClient &client,
 					 name);
 
 	return audio_output_new(event_loop, ReplayGainConfig(), *param,
-				*(MixerListener *)nullptr,
+				mixer_listener,
 				client);
 }
 
@@ -142,8 +147,10 @@ try {
 
 	/* initialize the audio output */
 
+	NullMixerListener mixer_listener;
 	DummyAudioOutputClient client;
-	AudioOutput *ao = load_audio_output(event_loop, client, argv[2]);
+	AudioOutput *ao = load_audio_output(event_loop, mixer_listener,
+					    client, argv[2]);
 
 	/* parse the audio format */
 

win32/build.py

@@ -50,14 +50,14 @@ class CrossGccToolchain:
         self.nm = os.path.join(toolchain_bin, arch + '-nm')
         self.strip = os.path.join(toolchain_bin, arch + '-strip')
 
-        common_flags = ''
+        common_flags = '-O2 -g'
 
         if not x64:
             # enable SSE support which is required for LAME
             common_flags += ' -march=pentium3'
 
-        self.cflags = '-O2 -g ' + common_flags
-        self.cxxflags = '-O2 -g ' + common_flags
+        self.cflags = common_flags
+        self.cxxflags = common_flags
         self.cppflags = '-isystem ' + os.path.join(install_prefix, 'include')
         self.ldflags = '-L' + os.path.join(install_prefix, 'lib')
         self.libs = ''