release v0.21.26

Skip the beginning of a sector if the last seek was odd, and clear the
buffer on seek.

.gitignore

@@ -6,3 +6,6 @@
 /output/
 
 __pycache__/
+
+/.clangd/
+/compile_commands.json

.travis.yml

@@ -1,7 +1,73 @@
 language: cpp
 
-matrix:
+jobs:
   include:
+    # Ubuntu Bionic (18.04) with GCC 7
+    - os: linux
+      dist: bionic
+      addons:
+        apt:
+          sources:
+            - sourceline: 'ppa:deadsnakes/ppa' # for Python 3.7 (required by Meson)
+          packages:
+            - libgtest-dev
+            - libboost-dev
+            - python3.6
+            - python3-urllib3
+            - ninja-build
+      before_install:
+        - wget https://bootstrap.pypa.io/get-pip.py
+        - /usr/bin/python3.6 get-pip.py --user --no-cache-dir
+      install:
+        - /usr/bin/python3.6 $HOME/.local/bin/pip install --user meson --no-cache-dir
+      env:
+        - MATRIX_EVAL="export PATH=\$HOME/.local/bin:\$PATH"
+
+    # Ubuntu Bionic (18.04) with GCC 7 on big-endian
+    - os: linux
+      arch: s390x
+      dist: bionic
+      addons:
+        apt:
+          sources:
+            - sourceline: 'ppa:deadsnakes/ppa' # for Python 3.7 (required by Meson)
+          packages:
+            - libgtest-dev
+            - libboost-dev
+            - python3.6
+            - python3-urllib3
+            - ninja-build
+      before_install:
+        - wget https://bootstrap.pypa.io/get-pip.py
+        - /usr/bin/python3.6 get-pip.py --user --no-cache-dir
+      install:
+        - /usr/bin/python3.6 $HOME/.local/bin/pip install --user meson --no-cache-dir
+      env:
+        - MATRIX_EVAL="export PATH=\$HOME/.local/bin:\$PATH"
+
+    # Ubuntu Bionic (18.04) with GCC 7 on ARM64
+    - os: linux
+      arch: arm64
+      dist: bionic
+      addons:
+        apt:
+          sources:
+            - sourceline: 'ppa:deadsnakes/ppa' # for Python 3.7 (required by Meson)
+          packages:
+            - libgtest-dev
+            - libboost-dev
+            - python3.6
+            - python3-urllib3
+            - ninja-build
+      before_install:
+        - wget https://bootstrap.pypa.io/get-pip.py
+        - /usr/bin/python3.6 get-pip.py --user --no-cache-dir
+      install:
+        - /usr/bin/python3.6 $HOME/.local/bin/pip install --user meson --no-cache-dir
+      env:
+        - MATRIX_EVAL="export PATH=\$HOME/.local/bin:\$PATH"
+
+    # Ubuntu Trusty (16.04) with GCC 6
     - os: linux
       dist: trusty
       addons:
@@ -20,13 +86,14 @@ matrix:
             - ninja-build
       before_install:
         - wget https://bootstrap.pypa.io/get-pip.py
-        - /usr/bin/python3.6 get-pip.py --user
+        - /usr/bin/python3.6 get-pip.py --user --no-cache-dir
       install:
-        - /usr/bin/python3.6 $HOME/.local/bin/pip install --user meson
+        - /usr/bin/python3.6 $HOME/.local/bin/pip install --user meson --no-cache-dir
       env:
         # use gold as workaround for https://sourceware.org/bugzilla/show_bug.cgi?id=17068
-        - MATRIX_EVAL="export CC=gcc-6 CXX=g++-6 LDFLAGS=-fuse-ld=gold PATH=$HOME/.local/bin:$PATH"
+        - MATRIX_EVAL="export CC='ccache gcc-6' CXX='ccache g++-6' LDFLAGS=-fuse-ld=gold PATH=\$HOME/.local/bin:\$PATH"
 
+    # Ubuntu Trusty (16.04) with GCC 8
     - os: linux
       dist: trusty
       addons:
@@ -45,31 +112,61 @@ matrix:
             - ninja-build
       before_install:
         - wget https://bootstrap.pypa.io/get-pip.py
-        - /usr/bin/python3.6 get-pip.py --user
+        - /usr/bin/python3.6 get-pip.py --user --no-cache-dir
       install:
-        - /usr/bin/python3.6 $HOME/.local/bin/pip install --user meson
+        - /usr/bin/python3.6 $HOME/.local/bin/pip install --user meson --no-cache-dir
       env:
         # use gold as workaround for https://sourceware.org/bugzilla/show_bug.cgi?id=17068
-        - MATRIX_EVAL="export CC=gcc-8 CXX=g++-8 LDFLAGS=-fuse-ld=gold PATH=$HOME/.local/bin:$PATH"
+        - MATRIX_EVAL="export CC='ccache gcc-8' CXX='ccache g++-8' LDFLAGS=-fuse-ld=gold PATH=\$HOME/.local/bin:\$PATH"
 
     - os: osx
-      osx_image: xcode9.3beta
+      osx_image: xcode9.4
+      addons:
+        homebrew:
+          packages:
+            - ccache
+            - meson
+            - icu4c
+            - ffmpeg
+            - libnfs
+            - yajl
+            - libupnp
+            - libid3tag
+            - chromaprint
+            - libsamplerate
+            - libsoxr
+            # libzzip appears to be broken on Homebrew: "ld: library not found for -lzzip"
+            #- libzzip
+            - flac
+            - opus
+            - libvorbis
+            - faad2
+            - wavpack
+            - libmpdclient
+          update: true
       env:
-        - MATRIX_EVAL=""
+        - MATRIX_EVAL="export PATH=/usr/local/opt/ccache/libexec:$PATH HOMEBREW_NO_ANALYTICS=1"
 
 cache:
-  - apt
-  - ccache
+  apt: true
+  ccache: true
+  directories:
+    - $HOME/Library/Caches/Homebrew
+
+before_cache:
+  - test "$TRAVIS_OS_NAME" != "osx" || brew cleanup
 
 before_install:
   - eval "${MATRIX_EVAL}"
-  # C++14
-  - test "$TRAVIS_OS_NAME" != "osx" || brew update
 
 install:
   # C++14
-  - test "$TRAVIS_OS_NAME" != "osx" || brew install ccache meson
-  - test "$TRAVIS_OS_NAME" != "osx" || brew install --HEAD https://gist.githubusercontent.com/Kronuz/96ac10fbd8472eb1e7566d740c4034f8/raw/gtest.rb
+
+  # Work around "Target /usr/local/lib/libgtest.a is a symlink
+  # belonging to nss. You can unlink it" during gtest install
+  - test "$TRAVIS_OS_NAME" != "osx" || brew unlink nss
+
+  - test "$TRAVIS_OS_NAME" != "osx" || brew install https://gist.githubusercontent.com/Kronuz/96ac10fbd8472eb1e7566d740c4034f8/raw/gtest.rb
 
 before_script:
   - ccache -s

NEWS

@@ -1,3 +1,214 @@
+ver 0.21.26 (2020/09/21)
+* database
+  - inotify: obey ".mpdignore" files
+* output
+  - osx: fix crash bug
+  - sles: support floating point samples
+* archive
+  - bzip2: fix crash on corrupt bzip2 file
+  - bzip2: flush output at end of input file
+  - iso9660: fix unaligned reads
+  - iso9660: support seeking
+  - zzip: fix crash on corrupt ZIP file
+* decoder
+  - ffmpeg: remove "rtsp://" from the list of supported protocols
+  - ffmpeg: add "hls+http://" to the list of supported protocols
+  - opus: support the gain value from the Opus header
+  - sndfile: fix lost samples at end of file
+* fix "single" mode bug after resuming playback
+* the default log_level is "default", not "info"
+
+ver 0.21.25 (2020/07/06)
+* protocol:
+  - fix crash when using "rangeid" while playing
+* database
+  - simple: automatically scan new mounts
+  - upnp: fix compatibility with Plex DLNA
+* storage
+  - fix disappearing mounts after mounting twice
+  - udisks: fix reading ".mpdignore"
+* input
+  - file: detect premature end of file
+  - smbclient: don't send credentials to MPD clients
+* decoder
+  - opus: apply pre-skip and end trimming
+  - opus: fix memory leak
+  - opus: fix crash bug
+  - vorbis: fix crash bug
+* output
+  - osx: improve sample rate selection
+  - osx: fix noise while stopping
+* neighbor
+  - upnp: fix crash during shutdown
+* Windows/Android:
+  - fix Boost detection after breaking change in Meson 0.54
+
+ver 0.21.24 (2020/06/10)
+* protocol
+  - "tagtypes" requires no permissions
+* database
+  - simple: fix crash when mounting twice
+* decoder
+  - modplug: fix Windows build failure
+  - wildmidi: attempt to detect WildMidi using pkg-config
+  - wildmidi: fix Windows build failure
+* player
+  - don't restart current song if seeking beyond end
+* Android
+  - enable the decoder plugins GME, ModPlug and WildMidi
+  - fix build failure with Android NDK r21
+* Windows
+  - fix stream playback
+  - enable the decoder plugins GME, ModPlug and WildMidi
+  - work around Meson bug breaking the Windows build with GCC 10
+* fix unit test failure
+
+ver 0.21.23 (2020/04/23)
+* protocol
+  - add tag fallback for AlbumSort
+* storage
+  - curl: fix corrupt "href" values in the presence of XML entities
+  - curl: unescape "href" values
+* input
+  - nfs: fix crash bug
+  - nfs: fix freeze bug on reconnect
+* decoder
+  - gme: adapt to API change in the upcoming version 0.7.0
+* output
+  - alsa: implement channel mapping for 5.0 and 7.0
+* player
+  - drain outputs at end of song in "single" mode
+* Windows
+  - fix case insensitive search
+
+ver 0.21.22 (2020/04/02)
+* database
+  - simple: optimize startup
+* input
+  - curl: fix streaming errors on Android
+* playlist
+  - rss: support MIME type application/xml
+* mixer
+  - android: new mixer plugin for "sles" output
+* Android
+  - TV support
+* Windows
+  - fix time zone offset check
+* fix build failures with uClibc-ng
+
+ver 0.21.21 (2020/03/19)
+* configuration
+  - fix bug in "metadata_to_use" setting
+* playlist
+  - asx, xspf: fix corrupt tags in the presence of XML entities
+* archive
+  - iso9660: skip empty file names to work around libcdio bug
+* decoder
+  - gme: ignore empty tags
+* output
+  - solaris: port to NetBSD
+* raise default "max_connections" value to 100
+
+ver 0.21.20 (2020/02/16)
+* decoder
+  - audiofile, ffmpeg, sndfile: handle MIME type "audio/wav"
+  - ffmpeg: fix playback of AIFF and TTA
+  - vorbis, opus: fix seeking in small files
+* fix backwards seeking on ARM (and other non-x86 CPUs)
+
+ver 0.21.19 (2020/01/17)
+* configuration
+  - allow overriding top-level settings in includes
+* output
+  - pulse: obey Pulse's maximum sample rate (fixes DSD128 playback)
+* fix build failure with clang 10
+* fix build failure with Android NDK r20
+
+ver 0.21.18 (2019/12/24)
+* protocol
+  - work around Mac OS X bug in the ISO 8601 parser
+* output
+  - alsa: fix hang bug with ALSA "null" outputs
+* storage
+  - curl: fix crash bug
+* drop support for CURL versions older than 7.32.0
+* reduce unnecessary CPU wakeups
+
+ver 0.21.17 (2019/12/16)
+* protocol
+  - relax the ISO 8601 parser: allow omitting field separators, the
+    time of day and the "Z" suffix
+* archive
+  - zzip: improve error reporting
+* outputs
+  - jack: mark ports as terminal
+  - shout: declare metadata as UTF-8
+* fix build failure with -Ddatabase=false
+
+ver 0.21.16 (2019/10/16)
+* queue
+  - fix relative destination offset when moving a range
+* storage
+  - curl: request the "resourcetype" property to fix database update
+  - curl: URL-encode more paths
+  - curl: follow redirects for collections without trailing slash
+* update
+  - fix crash when music_directory is not a directory
+* fix build with iconv() instead of ICU
+
+ver 0.21.15 (2019/09/25)
+* decoder
+  - dsdiff, dsf: fix displayed bit rate
+  - mpcdec: fix bogus ReplayGain values
+* output
+  - solaris: fix build with glibc 2.30
+
+ver 0.21.14 (2019/08/21)
+* decoder
+  - sidplay: show track durations in database
+  - sidplay: convert tag values from Windows-1252 charset
+  - sidplay: strip text from "Date" tag
+* player
+  - fix crash after song change
+  - fix seek position after restarting the decoder
+* protocol
+  - include command name in error responses
+
+ver 0.21.13 (2019/08/06)
+* input
+  - cdio_paranoia: require libcdio-paranoia 10.2+0.93+1
+* decoder
+  - mad: fix crackling sound (0.21.12 regression)
+* output
+  - jack: improved Windows compatibility
+
+ver 0.21.12 (2019/08/03)
+* decoder
+  - mad: update bit rate after seeking
+  - mad: fix several bugs preventing the plugin from decoding the last frame
+  - opus: ignore case in replay gain tag names
+  - opus, vorbis: decode the "end of stream" packet
+* output
+  - jack: fix mono-to-stereo conversion
+* player
+  - don't restart unseekable song after failed seek attempt
+* Windows
+  - support backslash in relative URIs loaded from playlists
+
+ver 0.21.11 (2019/07/03)
+* input
+  - tidal: deprecated because Tidal has changed the protocol
+* decoder
+  - wildmidi: log error if library initialization fails
+* output
+  - alsa: fix busy loop while draining
+  - alsa: fix missing drain call
+  - alsa: improve xrun-avoiding silence generator
+  - alsa: log when generating silence due to slow decoder
+  - alsa, osx: fix distortions with DSD_U32 and DoP on 32 bit CPUs
+* protocol
+  - fix "list" with multiple "group" levels
+
 ver 0.21.10 (2019/06/05)
 * decoder
   - opus: fix duplicate tags

android/AndroidManifest.xml

@@ -2,18 +2,25 @@
 <manifest xmlns:android="http://schemas.android.com/apk/res/android"
           package="org.musicpd"
           android:installLocation="auto"
-          android:versionCode="33"
-          android:versionName="0.21.10">
+          android:versionCode="49"
+          android:versionName="0.21.26">
 
-  <uses-sdk android:minSdkVersion="21" android:targetSdkVersion="26"/>
+  <uses-sdk android:minSdkVersion="21" android:targetSdkVersion="28"/>
+
+  <uses-feature android:name="android.software.leanback"
+                android:required="false" />
+  <uses-feature android:name="android.hardware.touchscreen"
+                android:required="false" />
 
   <uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE"/>
   <uses-permission android:name="android.permission.WAKE_LOCK"/>
   <uses-permission android:name="android.permission.INTERNET"/>
   <uses-permission android:name="android.permission.RECEIVE_BOOT_COMPLETED" />
+  <uses-permission android:name="android.permission.FOREGROUND_SERVICE" />
 
   <application android:allowBackup="true"
                android:icon="@drawable/icon"
+               android:banner="@drawable/icon"
                android:label="@string/app_name">
     <activity android:name=".Settings"
               android:label="@string/app_name">
@@ -22,6 +29,14 @@
         <category android:name="android.intent.category.LAUNCHER" />
       </intent-filter>
     </activity>
+    <activity android:name=".Settings"
+              android:label="@string/app_name" >
+      <intent-filter>
+        <action android:name="android.intent.action.MAIN" />
+        <category android:name="android.intent.category.LEANBACK_LAUNCHER" />
+      </intent-filter>
+    </activity>
+
     <receiver android:name=".Receiver">
       <intent-filter>
         <action android:name="android.intent.action.BOOT_COMPLETED" />

android/build.py

@@ -25,25 +25,32 @@ android_abis = {
         'arch': 'arm-linux-androideabi',
         'ndk_arch': 'arm',
         'toolchain_arch': 'arm-linux-androideabi',
-        'llvm_triple': 'armv7-none-linux-androideabi',
-        'cflags': '-march=armv7-a -mfpu=vfp -mfloat-abi=softfp',
+        'llvm_triple': 'armv7-linux-androideabi',
+        'cflags': '-fpic -march=armv7-a -mfpu=vfpv3-d16 -mfloat-abi=softfp',
     },
 
     'arm64-v8a': {
-        'android_api_level': '21',
         'arch': 'aarch64-linux-android',
         'ndk_arch': 'arm64',
         'toolchain_arch': 'aarch64-linux-android',
-        'llvm_triple': 'aarch64-none-linux-android',
-        'cflags': '',
+        'llvm_triple': 'aarch64-linux-android',
+        'cflags': '-fpic',
     },
 
     'x86': {
         'arch': 'i686-linux-android',
         'ndk_arch': 'x86',
         'toolchain_arch': 'x86',
-        'llvm_triple': 'i686-none-linux-android',
-        'cflags': '-march=i686 -mtune=intel -mssse3 -mfpmath=sse -m32',
+        'llvm_triple': 'i686-linux-android',
+        'cflags': '-fPIC -march=i686 -mtune=intel -mssse3 -mfpmath=sse -m32',
+    },
+
+    'x86_64': {
+        'arch': 'x86_64-linux-android',
+        'ndk_arch': 'x86_64',
+        'toolchain_arch': 'x86_64',
+        'llvm_triple': 'x86_64-linux-android',
+        'cflags': '-fPIC -m64',
     },
 }
 
@@ -76,27 +83,20 @@ class AndroidNdkToolchain:
 
         ndk_arch = abi_info['ndk_arch']
         android_api_level = '21'
-        ndk_platform = 'android-' + android_api_level
 
         # select the NDK compiler
         gcc_version = '4.9'
 
-        ndk_platform_path = os.path.join(ndk_path, 'platforms', ndk_platform)
-        sysroot = os.path.join(ndk_path, 'sysroot')
-        target_root = os.path.join(ndk_platform_path, 'arch-' + ndk_arch)
-
         install_prefix = os.path.join(arch_path, 'root')
 
         self.arch = arch
         self.install_prefix = install_prefix
-        self.sysroot = sysroot
 
         toolchain_path = os.path.join(ndk_path, 'toolchains', abi_info['toolchain_arch'] + '-' + gcc_version, 'prebuilt', build_arch)
         llvm_path = os.path.join(ndk_path, 'toolchains', 'llvm', 'prebuilt', build_arch)
-        llvm_triple = abi_info['llvm_triple']
+        llvm_triple = abi_info['llvm_triple'] + android_api_level
 
         common_flags = '-Os -g'
-        common_flags += ' -fPIC'
         common_flags += ' ' + abi_info['cflags']
 
         toolchain_bin = os.path.join(toolchain_path, 'bin')
@@ -107,6 +107,9 @@ class AndroidNdkToolchain:
 
         common_flags += ' -fvisibility=hidden -fdata-sections -ffunction-sections'
 
+        # required flags from https://android.googlesource.com/platform/ndk/+/ndk-release-r20/docs/BuildSystemMaintainers.md#additional-required-arguments
+        common_flags += ' -fno-addrsig'
+
         self.ar = os.path.join(toolchain_bin, arch + '-ar')
         self.ranlib = os.path.join(toolchain_bin, arch + '-ranlib')
         self.nm = os.path.join(toolchain_bin, arch + '-nm')
@@ -114,15 +117,11 @@ class AndroidNdkToolchain:
 
         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__=' + android_api_level
-        self.ldflags = '--sysroot=' + sysroot + \
-            ' -L' + os.path.join(install_prefix, 'lib') + \
-            ' -L' + os.path.join(target_root, 'usr', 'lib') + \
-            ' -B' + os.path.join(target_root, 'usr', 'lib') + \
+        self.cppflags = ' -isystem ' + os.path.join(install_prefix, 'include')
+        self.ldflags = ' -L' + os.path.join(install_prefix, 'lib') + \
+            ' -Wl,--exclude-libs=ALL' + \
             ' ' + common_flags
+        self.ldflags = common_flags
         self.libs = ''
 
         self.is_arm = ndk_arch == 'arm'
@@ -130,13 +129,10 @@ class AndroidNdkToolchain:
         self.is_aarch64 = ndk_arch == 'arm64'
         self.is_windows = False
 
-        libcxx_path = os.path.join(ndk_path, 'sources/cxx-stl/llvm-libc++')
-        libcxx_libs_path = os.path.join(libcxx_path, 'libs', android_abi)
-
         libstdcxx_flags = ''
-        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 + ' -L' + libcxx_libs_path
-        libstdcxx_libs = '-lc++_static -lc++abi'
+        libstdcxx_cxxflags = ''
+        libstdcxx_ldflags = ''
+        libstdcxx_libs = '-static-libstdc++'
 
         if self.is_armv7:
             # On 32 bit ARM, clang generates no ".eh_frame" section;
@@ -172,6 +168,9 @@ thirdparty_libs = [
     opus,
     flac,
     libid3tag,
+    libmodplug,
+    wildmidi,
+    gme,
     ffmpeg,
     curl,
     libexpat,

android/src/Main.java

@@ -21,6 +21,7 @@ package org.musicpd;
 
 import android.annotation.TargetApi;
 import android.app.Notification;
+import android.app.NotificationManager;
 import android.app.PendingIntent;
 import android.app.Service;
 import android.content.ComponentName;
@@ -35,6 +36,9 @@ import android.os.RemoteException;
 import android.util.Log;
 import android.widget.RemoteViews;
 
+import java.lang.reflect.Constructor;
+import java.lang.reflect.Method;
+
 public class Main extends Service implements Runnable {
 	private static final String TAG = "Main";
 	private static final String REMOTE_ERROR = "MPD process was killed";
@@ -156,11 +160,36 @@ public class Main extends Service implements Runnable {
 		sendMessage(MSG_SEND_STATUS, mStatus, 0, mError);
 	}
 
+	private Notification.Builder createNotificationBuilderWithChannel() {
+		final NotificationManager notificationManager = (NotificationManager) this.getSystemService(Context.NOTIFICATION_SERVICE);
+		if (notificationManager == null)
+			return null;
+
+		final String id = "org.musicpd";
+		final String name = "MPD service";
+		final int importance = 3; /* NotificationManager.IMPORTANCE_DEFAULT */
+
+		try {
+			Class<?> ncClass = Class.forName("android.app.NotificationChannel");
+			Constructor<?> ncCtor = ncClass.getConstructor(String.class, CharSequence.class, int.class);
+			Object nc = ncCtor.newInstance(id, name, importance);
+
+			Method nmCreateNotificationChannelMethod =
+				NotificationManager.class.getMethod("createNotificationChannel", ncClass);
+			nmCreateNotificationChannelMethod.invoke(notificationManager, nc);
+
+			Constructor nbCtor = Notification.Builder.class.getConstructor(Context.class, String.class);
+			return (Notification.Builder) nbCtor.newInstance(this, id);
+		} catch (Exception e)
+		{
+			Log.e(TAG, "error creating the NotificationChannel", e);
+			return null;
+		}
+	}
+
 	private void start() {
 		if (mThread != null)
 			return;
-		mThread = new Thread(this);
-		mThread.start();
 
 		final Intent mainIntent = new Intent(this, Settings.class);
 		mainIntent.setAction("android.intent.action.MAIN");
@@ -168,13 +197,25 @@ public class Main extends Service implements Runnable {
 		final PendingIntent contentIntent = PendingIntent.getActivity(this, 0,
 				mainIntent, PendingIntent.FLAG_CANCEL_CURRENT);
 
-		Notification notification = new Notification.Builder(this)
-			.setContentTitle(getText(R.string.notification_title_mpd_running))
+		Notification.Builder nBuilder;
+		if (Build.VERSION.SDK_INT >= 26 /* Build.VERSION_CODES.O */)
+		{
+			nBuilder = createNotificationBuilderWithChannel();
+			if (nBuilder == null)
+				return;
+		}
+		else
+			nBuilder = new Notification.Builder(this);
+
+		Notification notification = nBuilder.setContentTitle(getText(R.string.notification_title_mpd_running))
 			.setContentText(getText(R.string.notification_text_mpd_running))
 			.setSmallIcon(R.drawable.notification_icon)
 			.setContentIntent(contentIntent)
 			.build();
 
+		mThread = new Thread(this);
+		mThread.start();
+
 		startForeground(R.string.notification_title_mpd_running, notification);
 		startService(new Intent(this, Main.class));
 	}

android/src/Settings.java

@@ -105,12 +105,13 @@ public class Settings extends Activity {
 				else
 					mRunButton.setChecked(false);
 				mFirstRun = true;
+				mTextStatus.setText("");
 				break;
 			case MSG_STARTED:
 				Log.d(TAG, "onStarted");
 				mRunButton.setChecked(true);
 				mFirstRun = true;
-				mTextStatus.setText("CAUTION: this version is EXPERIMENTAL!"); // XXX
+				mTextStatus.setText("MPD service started");
 				break;
 			case MSG_LOG:
 				if (mLogListArray.size() > MAX_LOGS)

doc/conf.py

@@ -38,7 +38,7 @@ author = 'Max Kellermann'
 # built documents.
 #
 # The short X.Y version.
-version = '0.21.10'
+version = '0.21.26'
 # The full version, including alpha/beta/rc tags.
 release = version
 

doc/include/tags.xml

@@ -1,165 +0,0 @@
-<?xml version='1.0' encoding="utf-8"?>
-<!DOCTYPE itemizedlist PUBLIC "-//OASIS//DTD DocBook XML V4.5//EN"
-                              "http://www.oasis-open.org/docbook/xml/4.5/docbookx.dtd">
-
-<itemizedlist>
-  <listitem>
-    <para>
-      <varname>artist</varname>: the artist name.  Its meaning is not
-      well-defined; see <varname>composer</varname> and
-      <varname>performer</varname> for more specific tags.
-    </para>
-  </listitem>
-
-  <listitem>
-    <para>
-      <varname>artistsort</varname>: same as
-      <varname>artist</varname>, but for sorting.  This usually omits
-      prefixes such as "The".
-    </para>
-  </listitem>
-
-  <listitem>
-    <para>
-      <varname>album</varname>: the album name.
-    </para>
-  </listitem>
-
-  <listitem>
-    <para>
-      <varname>albumsort</varname>: same as <varname>album</varname>,
-      but for sorting.
-    </para>
-  </listitem>
-
-  <listitem>
-    <para>
-      <varname>albumartist</varname>: on multi-artist albums, this is
-      the artist name which shall be used for the whole album.  The
-      exact meaning of this tag is not well-defined.
-    </para>
-  </listitem>
-
-  <listitem>
-    <para>
-      <varname>albumartistsort</varname>: same as
-      <varname>albumartist</varname>, but for sorting.
-    </para>
-  </listitem>
-
-  <listitem>
-    <para>
-      <varname>title</varname>: the song title.
-    </para>
-  </listitem>
-
-  <listitem>
-    <para>
-      <varname>track</varname>: the decimal track number within the
-      album.
-    </para>
-  </listitem>
-
-  <listitem>
-    <para>
-      <varname>name</varname>: a name for this song.  This is not the
-      song title.  The exact meaning of this tag is not well-defined.
-      It is often used by badly configured internet radio stations
-      with broken tags to squeeze both the artist name and the song
-      title in one tag.
-    </para>
-  </listitem>
-
-  <listitem>
-    <para>
-      <varname>genre</varname>: the music genre.
-    </para>
-  </listitem>
-
-  <listitem>
-    <para>
-      <varname>date</varname>: the song's release date.  This is
-      usually a 4-digit year.
-    </para>
-  </listitem>
-
-  <listitem>
-    <para>
-      <varname>composer</varname>: the artist who composed the song.
-    </para>
-  </listitem>
-
-  <listitem>
-    <para>
-      <varname>performer</varname>: the artist who performed the song.
-    </para>
-  </listitem>
-
-  <listitem>
-    <para>
-      <varname>comment</varname>: a human-readable comment about this
-      song.  The exact meaning of this tag is not well-defined.
-    </para>
-  </listitem>
-
-  <listitem>
-    <para>
-      <varname>disc</varname>: the decimal disc number in a multi-disc
-      album.
-    </para>
-  </listitem>
-
-  <listitem>
-    <para>
-      <varname>musicbrainz_artistid</varname>: the artist id in the
-      <ulink
-      url="https://picard.musicbrainz.org/docs/mappings/">MusicBrainz</ulink>
-      database.
-    </para>
-  </listitem>
-
-  <listitem>
-    <para>
-      <varname>musicbrainz_albumid</varname>: the album id in the
-      <ulink
-      url="https://picard.musicbrainz.org/docs/mappings/">MusicBrainz</ulink>
-      database.
-    </para>
-  </listitem>
-
-  <listitem>
-    <para>
-      <varname>musicbrainz_albumartistid</varname>: the album artist
-      id in the <ulink
-      url="https://picard.musicbrainz.org/docs/mappings/">MusicBrainz</ulink>
-      database.
-    </para>
-  </listitem>
-
-  <listitem>
-    <para>
-      <varname>musicbrainz_trackid</varname>: the track id in the
-      <ulink
-      url="https://picard.musicbrainz.org/docs/mappings/">MusicBrainz</ulink>
-      database.
-    </para>
-  </listitem>
-
-  <listitem>
-    <para>
-      <varname>musicbrainz_releasetrackid</varname>: the release track
-      id in the <ulink
-      url="https://picard.musicbrainz.org/docs/mappings/">MusicBrainz</ulink>
-      database.
-    </para>
-  </listitem>
-
-  <listitem>
-    <para>
-      <varname>musicbrainz_workid</varname>: the work id in the
-      <ulink
-      url="https://picard.musicbrainz.org/docs/mappings/">MusicBrainz</ulink>
-      database.
-    </para>
-  </listitem>
-</itemizedlist>

doc/plugins.rst

@@ -42,7 +42,7 @@ Provides access to the database of another :program:`MPD` instance using libmpdc
    * - **password**
      - The password used to log in to the "master" :program:`MPD` instance.
    * - **keepalive yes|no**
-     - Send TCP keepalive packets to the "master" :program:`MPD` instance? This option can help avoid certain firewalls dropping inactive connections, at the expensive of a very small amount of additional network traffic. Disabled by default.
+     - Send TCP keepalive packets to the "master" :program:`MPD` instance? This option can help avoid certain firewalls dropping inactive connections, at the expense of a very small amount of additional network traffic. Disabled by default.
 
 upnp
 ----
@@ -60,25 +60,25 @@ The default plugin which gives :program:`MPD` access to local files. It is used
 curl
 ----
 
-A WebDAV client using libcurl. It is used when :code:`music_directory` contains a http:// or https:// URI, for example :samp:`https://the.server/dav/`.
+A WebDAV client using libcurl. It is used when :code:`music_directory`
+contains a ``http://`` or ``https://`` URI, for example
+:samp:`https://the.server/dav/`.
 
 smbclient
 ---------
 
-Load music files from a SMB/CIFS server. It is used when :code:`music_directory` contains a smb:// URI, for example :samp:`smb://myfileserver/Music`.
+Load music files from a SMB/CIFS server. It is used when
+:code:`music_directory` contains a ``smb://`` URI, for example
+:samp:`smb://myfileserver/Music`.
 
 nfs
 ---
 
-Load music files from a NFS server. It is used when :code:`music_directory` contains a nfs:// URI according to RFC2224, for example :samp:`nfs://servername/path`.
+Load music files from a NFS server.  It is used when
+:code:`music_directory` contains a ``nfs://`` URI according to
+RFC2224, for example :samp:`nfs://servername/path`.
 
-This plugin uses libnfs, which supports only NFS version 3. Since :program:`MPD` is not allowed to bind to "privileged ports", the NFS server needs to enable the "insecure" setting; example :file:`/etc/exports`:
-
-.. code-block:: none
-
-    /srv/mp3 192.168.1.55(ro,insecure)
-
-Don't fear: "insecure" does not mean that your NFS server is insecure. A few decades ago, people thought the concept of "privileged ports" would make network services "secure", which was a fallacy. The absence of this obsolete "security" measure means little.
+See :ref:`input_nfs` for more information.
 
 udisks
 ------
@@ -162,7 +162,10 @@ curl
 
 Opens remote files or streams over HTTP using libcurl.
 
-Note that unless overridden by the below settings (e.g. by setting them to a blank value), general curl configuration from environment variables such as http_proxy or specified in :file:`~/.curlrc` will be in effect.
+Note that unless overridden by the below settings (e.g. by setting
+them to a blank value), general curl configuration from environment
+variables such as ``http_proxy`` or specified in :file:`~/.curlrc`
+will be in effect.
 
 .. list-table::
    :widths: 20 80
@@ -182,7 +185,9 @@ Note that unless overridden by the below settings (e.g. by setting them to a bla
 ffmpeg
 ------
 
-Access to various network protocols implemented by the FFmpeg library: gopher://, rtp://, rtsp://, rtmp://, rtmpt://, rtmps://
+Access to various network protocols implemented by the FFmpeg library:
+``gopher://``, ``rtp://``, ``rtsp://``, ``rtmp://``, ``rtmpt://``,
+``rtmps://``
 
 file
 ----
@@ -194,30 +199,51 @@ mms
 
 Plays streams with the MMS protocol using `libmms <https://launchpad.net/libmms>`_.
 
+.. _input_nfs:
+
 nfs
 ---
 
-Allows :program:`MPD` to access files on NFSv3 servers without actually mounting them (i.e. in userspace, without help from the kernel's VFS layer). All URIs with the nfs:// scheme are used according to RFC2224. Example:
+Allows :program:`MPD` to access files on NFS servers without actually
+mounting them (i.e. with :program:`libnfs` in userspace, without help
+from the kernel's VFS layer). All URIs with the ``nfs://`` scheme are
+used according to RFC2224. Example:
 
 .. code-block:: none
 
      mpc add nfs://servername/path/filename.ogg
 
-Note that this usually requires enabling the "insecure" flag in the server's /etc/exports file, because :program:`MPD` cannot bind to so-called "privileged" ports. Don't fear: this will not make your file server insecure; the flag was named in a time long ago when privileged ports were thought to be meaningful for security. By today's standards, NFSv3 is not secure at all, and if you believe it is, you're already doomed.
+This plugin uses :program:`libnfs`, which supports only NFS version 3.
+Since :program:`MPD` is not allowed to bind to so-called "privileged
+ports", the NFS server needs to enable the ``insecure`` setting;
+example :file:`/etc/exports`:
+
+.. code-block:: none
+
+    /srv/mp3 192.168.1.55(ro,insecure)
+
+Don't fear: this will not make your file server insecure; the flag was
+named a time long ago when privileged ports were thought to be
+meaningful for security. By today's standards, NFSv3 is not secure at
+all, and if you believe it is, you're already doomed.
 
 smbclient
 ---------
 
-Allows :program:`MPD` to access files on SMB/CIFS servers (e.g. Samba or Microsoft Windows). All URIs with the smb:// scheme are used. Example:
+Allows :program:`MPD` to access files on SMB/CIFS servers (e.g. Samba
+or Microsoft Windows). All URIs with the ``smb://`` scheme are
+used.  Example:
 
 .. code-block:: none
 
     mpc add smb://servername/sharename/filename.ogg
+    mpc add smb://username:password@servername/sharename/filename.ogg
 
 qobuz
 -----
 
-Play songs from the commercial streaming service Qobuz. It plays URLs in the form qobuz://track/ID, e.g.:
+Play songs from the commercial streaming service Qobuz. It plays URLs
+in the form ``qobuz://track/ID``, e.g.:
 
 .. code-block:: none
 
@@ -243,7 +269,14 @@ Play songs from the commercial streaming service Qobuz. It plays URLs in the for
 tidal
 -----
 
-Play songs from the commercial streaming service `Tidal <http://tidal.com/>`_. It plays URLs in the form tidal://track/ID, e.g.:
+Play songs from the commercial streaming service `Tidal
+<http://tidal.com/>`_. It plays URLs in the form ``tidal://track/ID``,
+e.g.:
+
+.. warning::
+
+   This plugin is currently defunct because Tidal has changed the
+   protocol and decided not to share documentation.
 
 .. code-block:: none
 
@@ -1039,7 +1072,8 @@ sles
 
 Plugin using the `OpenSL ES <https://www.khronos.org/opensles/>`__
 audio API.  Its primary use is local playback on Android, where
-:ref:`ALSA <alsa_plugin>` is not available.
+:ref:`ALSA <alsa_plugin>` is not available.  It supports 16 bit and
+floating point samples.
 
 
 solaris
@@ -1064,7 +1098,7 @@ Filter plugins
 normalize
 ---------
 
-Normalize the volume during playback (at the expensve of quality).
+Normalize the volume during playback (at the expense of quality).
 
 
 null

doc/protocol.rst

@@ -464,7 +464,8 @@ Querying :program:`MPD`'s status
     - ``songs``: number of songs
     - ``uptime``: daemon uptime in seconds
     - ``db_playtime``: sum of all song times in the database in seconds
-    - ``db_update``: last db update in UNIX time
+    - ``db_update``: last db update in UNIX time (seconds since
+      1970-01-01 UTC)
     - ``playtime``: time length of music played
 
 Playback options
@@ -824,7 +825,8 @@ The music database
      albumart
      size: 1024768
      binary: 8192
-     <8192 bytes>OK
+     <8192 bytes>
+     OK
 
 :command:`count {FILTER} [group {GROUPTYPE}]`
     Count the number of songs and their total playtime in

doc/user.rst

@@ -62,16 +62,16 @@ In any case, you need:
 Each plugin usually needs a codec library, which you also need to
 install. Check the :doc:`plugins` for details about required libraries
 
-For example, the following installs a fairly complete list of build dependencies on Debian Jessie:
+For example, the following installs a fairly complete list of build dependencies on Debian Buster:
 
 .. code-block:: none
 
-    apt install g++ \
+    apt install meson g++ \
       libpcre3-dev \
       libmad0-dev libmpg123-dev libid3tag0-dev \
-      libflac-dev libvorbis-dev libopus-dev \
+      libflac-dev libvorbis-dev libopus-dev libogg-dev \
       libadplug-dev libaudiofile-dev libsndfile1-dev libfaad-dev \
-      libfluidsynth-dev libgme-dev libmikmod2-dev libmodplug-dev \
+      libfluidsynth-dev libgme-dev libmikmod-dev libmodplug-dev \
       libmpcdec-dev libwavpack-dev libwildmidi-dev \
       libsidplay2-dev libsidutils-dev libresid-builder-dev \
       libavcodec-dev libavformat-dev \
@@ -91,7 +91,9 @@ For example, the following installs a fairly complete list of build dependencies
       libsystemd-dev \
       libgtest-dev \
       libboost-dev \
-      libicu-dev
+      libicu-dev \
+      libchromaprint-dev \
+      libgcrypt20-dev
       
 
 Now configure the source tree:
@@ -693,7 +695,7 @@ These settings are various limitations to prevent :program:`MPD` from using too
    * - **connection_timeout SECONDS**
      - If a client does not send any new data in this time period, the connection is closed. Clients waiting in "idle" mode are excluded from this. Default is 60.
    * - **max_connections NUMBER**
-     - This specifies the maximum number of clients that can be connected to :program:`MPD` at the same time. Default is 5.
+     - This specifies the maximum number of clients that can be connected to :program:`MPD` at the same time. Default is 100.
    * - **max_playlist_length NUMBER**
      - The maximum number of songs that can be in the playlist. Default is 16384.
    * - **max_command_list_size KBYTES**

meson.build

@@ -1,11 +1,12 @@
 project(
   'mpd',
   ['c', 'cpp'],
-  version: '0.21.10',
+  version: '0.21.26',
   meson_version: '>= 0.49.0',
   default_options: [
     'c_std=c99',
-    'cpp_std=c++14'
+    'cpp_std=c++14',
+    'warning_level=2',
   ],
   license: 'GPLv2+',
 )
@@ -15,12 +16,18 @@ version_cxx = vcs_tag(input: 'src/GitVersion.cxx', output: 'GitVersion.cxx')
 compiler = meson.get_compiler('cpp')
 c_compiler = meson.get_compiler('c')
 
+if compiler.get_id() == 'gcc' and compiler.version().version_compare('<6')
+  warning('Your GCC version is too old.  You need at least version 6.')
+elif compiler.get_id() == 'clang' and compiler.version().version_compare('<3')
+  warning('Your clang version is too old.  You need at least version 3.')
+endif
+
 conf = configuration_data()
 conf.set_quoted('PACKAGE', meson.project_name())
 conf.set_quoted('PACKAGE_NAME', meson.project_name())
 conf.set_quoted('PACKAGE_VERSION', meson.project_version())
 conf.set_quoted('VERSION', meson.project_version())
-conf.set_quoted('PROTOCOL_VERSION', '0.21.6')
+conf.set_quoted('PROTOCOL_VERSION', '0.21.11')
 conf.set_quoted('SYSTEM_CONFIG_FILE_LOCATION', join_paths(get_option('prefix'), get_option('sysconfdir'), 'mpd.conf'))
 
 common_cppflags = [
@@ -34,9 +41,6 @@ common_cxxflags = [
 ]
 
 test_common_flags = [
-  '-Wall',
-  '-Wextra',
-
   '-fvisibility=hidden',
 
   '-ffast-math',
@@ -82,6 +86,10 @@ test_ldflags = [
 ]
 
 if get_option('buildtype') != 'debug'
+  test_cxxflags += [
+    '-ffunction-sections',
+    '-fdata-sections',
+  ]
   test_cflags += [
     '-ffunction-sections',
     '-fdata-sections',
@@ -132,7 +140,13 @@ conf.set('HAVE_GETPWNAM_R', compiler.has_function('getpwnam_r'))
 conf.set('HAVE_GETPWUID_R', compiler.has_function('getpwuid_r'))
 conf.set('HAVE_INITGROUPS', compiler.has_function('initgroups'))
 conf.set('HAVE_FNMATCH', compiler.has_function('fnmatch'))
-conf.set('HAVE_STRNDUP', compiler.has_function('strndup', prefix: '#define _GNU_SOURCE\n#include <string.h>'))
+
+# Explicitly exclude Windows in this check because
+# https://github.com/mesonbuild/meson/issues/3672 (reported in 2018,
+# still not fixed in 2020) causes Meson to believe it exists, because
+# __builtin_strndup() exists (but strndup() still cannot be used).
+conf.set('HAVE_STRNDUP', not is_windows and compiler.has_function('strndup', prefix: '#define _GNU_SOURCE\n#include <string.h>'))
+
 conf.set('HAVE_STRCASESTR', compiler.has_function('strcasestr'))
 
 conf.set('HAVE_PRCTL', is_linux)
@@ -280,6 +294,7 @@ if not is_android
 else
   sources += [
     'src/android/Context.cxx',
+    'src/android/AudioManager.cxx',
     'src/android/Environment.cxx',
     'src/android/LogListener.cxx',
   ]
@@ -298,10 +313,14 @@ if enable_database
 endif
 
 subdir('src/util')
+subdir('src/time')
 subdir('src/system')
 subdir('src/thread')
+subdir('src/net')
 subdir('src/event')
 
+subdir('src/apple')
+
 subdir('src/lib/dbus')
 subdir('src/lib/icu')
 subdir('src/lib/smbclient')
@@ -324,7 +343,6 @@ subdir('src/lib/yajl')
 
 subdir('src/fs')
 subdir('src/config')
-subdir('src/net')
 subdir('src/tag')
 subdir('src/pcm')
 subdir('src/neighbor')
@@ -379,8 +397,11 @@ endif
 if archive_glue_dep.found()
   sources += [
     'src/TagArchive.cxx',
-    'src/db/update/Archive.cxx',
   ]
+
+  if enable_database
+    sources += ['src/db/update/Archive.cxx']
+  endif
 endif
 
 if is_windows

python/build/cmake.py

@@ -0,0 +1,45 @@
+import subprocess
+
+from build.project import Project
+
+def configure(toolchain, src, build, args=()):
+    cross_args = []
+
+    if toolchain.is_windows:
+        cross_args.append('-DCMAKE_SYSTEM_NAME=Windows')
+        cross_args.append('-DCMAKE_RC_COMPILER=' + toolchain.windres)
+
+    configure = [
+        'cmake',
+        src,
+
+        '-DCMAKE_INSTALL_PREFIX=' + toolchain.install_prefix,
+        '-DCMAKE_BUILD_TYPE=release',
+
+        '-DCMAKE_C_COMPILER=' + toolchain.cc,
+        '-DCMAKE_CXX_COMPILER=' + toolchain.cxx,
+
+        '-DCMAKE_C_FLAGS=' + toolchain.cflags + ' ' + toolchain.cppflags,
+        '-DCMAKE_CXX_FLAGS=' + toolchain.cxxflags + ' ' + toolchain.cppflags,
+
+        '-GNinja',
+    ] + cross_args + args
+
+    subprocess.check_call(configure, env=toolchain.env, cwd=build)
+
+class CmakeProject(Project):
+    def __init__(self, url, md5, installed, configure_args=[],
+                 **kwargs):
+        Project.__init__(self, url, md5, installed, **kwargs)
+        self.configure_args = configure_args
+
+    def configure(self, toolchain):
+        src = self.unpack(toolchain)
+        build = self.make_build_path(toolchain)
+        configure(toolchain, src, build, self.configure_args)
+        return build
+
+    def build(self, toolchain):
+        build = self.configure(toolchain)
+        subprocess.check_call(['ninja', 'install'],
+                              cwd=build, env=toolchain.env)

python/build/libs.py

@@ -4,19 +4,20 @@ from os.path import abspath
 from build.project import Project
 from build.zlib import ZlibProject
 from build.meson import MesonProject
+from build.cmake import CmakeProject
 from build.autotools import AutotoolsProject
 from build.ffmpeg import FfmpegProject
 from build.boost import BoostProject
 
 libmpdclient = MesonProject(
-    'https://www.musicpd.org/download/libmpdclient/2/libmpdclient-2.16.tar.xz',
-    'fa6bdab67c0e0490302b38f00c27b4959735c3ec8aef7a88327adb1407654464',
+    'https://www.musicpd.org/download/libmpdclient/2/libmpdclient-2.19.tar.xz',
+    '158aad4c2278ab08e76a3f2b0166c99b39fae00ee17231bd225c5a36e977a189',
     'lib/libmpdclient.a',
 )
 
 libogg = AutotoolsProject(
-    'http://downloads.xiph.org/releases/ogg/libogg-1.3.3.tar.xz',
-    '4f3fc6178a533d392064f14776b23c397ed4b9f48f5de297aba73b643f955c08',
+    'http://downloads.xiph.org/releases/ogg/libogg-1.3.4.tar.xz',
+    'c163bc12bc300c401b6aa35907ac682671ea376f13ae0969a220f7ddf71893fe',
     'lib/libogg.a',
     [
         '--disable-shared', '--enable-static',
@@ -24,8 +25,8 @@ libogg = AutotoolsProject(
 )
 
 libvorbis = AutotoolsProject(
-    'http://downloads.xiph.org/releases/vorbis/libvorbis-1.3.6.tar.xz',
-    'af00bb5a784e7c9e69f56823de4637c350643deedaf333d0fa86ecdba6fcb415',
+    'http://downloads.xiph.org/releases/vorbis/libvorbis-1.3.7.tar.xz',
+    'b33cc4934322bcbf6efcbacf49e3ca01aadbea4114ec9589d1b1e9d20f72954b',
     'lib/libvorbis.a',
     [
         '--disable-shared', '--enable-static',
@@ -38,8 +39,8 @@ libvorbis = AutotoolsProject(
 )
 
 opus = AutotoolsProject(
-    'https://archive.mozilla.org/pub/opus/opus-1.3.tar.gz',
-    '4f3d69aefdf2dbaf9825408e452a8a414ffc60494c70633560700398820dc550',
+    'https://archive.mozilla.org/pub/opus/opus-1.3.1.tar.gz',
+    '65b58e1e25b2a114157014736a3d9dfeaad8d41be1c8179866f144a2fb44ff9d',
     'lib/libopus.a',
     [
         '--disable-shared', '--enable-static',
@@ -52,8 +53,8 @@ opus = AutotoolsProject(
 )
 
 flac = AutotoolsProject(
-    'http://downloads.xiph.org/releases/flac/flac-1.3.2.tar.xz',
-    '91cfc3ed61dc40f47f050a109b08610667d73477af6ef36dcad31c31a4a8d53f',
+    'http://downloads.xiph.org/releases/flac/flac-1.3.3.tar.xz',
+    '213e82bd716c9de6db2f98bcadbc4c24c7e2efe8c75939a1a84e28539c4e1748',
     'lib/libFLAC.a',
     [
         '--disable-shared', '--enable-static',
@@ -111,9 +112,44 @@ liblame = AutotoolsProject(
     ],
 )
 
+libmodplug = AutotoolsProject(
+    'https://downloads.sourceforge.net/modplug-xmms/libmodplug/0.8.9.0/libmodplug-0.8.9.0.tar.gz',
+    '457ca5a6c179656d66c01505c0d95fafaead4329b9dbaa0f997d00a3508ad9de',
+    'lib/libmodplug.a',
+    [
+        '--disable-shared', '--enable-static',
+    ],
+)
+
+wildmidi = CmakeProject(
+    'https://codeload.github.com/Mindwerks/wildmidi/tar.gz/wildmidi-0.4.3',
+    '498e5a96455bb4b91b37188ad6dcb070824e92c44f5ed452b90adbaec8eef3c5',
+    'lib/libWildMidi.a',
+    [
+        '-DBUILD_SHARED_LIBS=OFF',
+        '-DWANT_PLAYER=OFF',
+        '-DWANT_STATIC=ON',
+    ],
+    base='wildmidi-wildmidi-0.4.3',
+    name='wildmidi',
+    version='0.4.3',
+)
+
+gme = CmakeProject(
+    'https://bitbucket.org/mpyne/game-music-emu/downloads/game-music-emu-0.6.3.tar.xz',
+    'aba34e53ef0ec6a34b58b84e28bf8cfbccee6585cebca25333604c35db3e051d',
+    'lib/libgme.a',
+    [
+        '-DBUILD_SHARED_LIBS=OFF',
+        '-DENABLE_UBSAN=OFF',
+        '-DZLIB_INCLUDE_DIR=OFF',
+        '-DSDL2_DIR=OFF',
+    ],
+)
+
 ffmpeg = FfmpegProject(
-    'http://ffmpeg.org/releases/ffmpeg-4.1.3.tar.xz',
-    '0c3020452880581a8face91595b239198078645e7d7184273b8bcc7758beb63d',
+    'http://ffmpeg.org/releases/ffmpeg-4.3.1.tar.xz',
+    'ad009240d46e307b4e03a213a0f49c11b650e445b1f8be0dda2a9212b34d2ffb',
     'lib/libavcodec.a',
     [
         '--disable-shared', '--enable-static',
@@ -341,8 +377,8 @@ ffmpeg = FfmpegProject(
 )
 
 curl = AutotoolsProject(
-    'http://curl.haxx.se/download/curl-7.64.1.tar.xz',
-    '9252332a7f871ce37bfa7f78bdd0a0e3924d8187cc27cb57c76c9474a7168fb3',
+    'http://curl.haxx.se/download/curl-7.72.0.tar.xz',
+    '0ded0808c4d85f2ee0db86980ae610cc9d165e9ca9da466196cc73c346513713',
     'lib/libcurl.a',
     [
         '--disable-shared', '--enable-static',
@@ -358,6 +394,11 @@ curl = AutotoolsProject(
         '--disable-manual',
         '--disable-threaded-resolver', '--disable-verbose', '--disable-sspi',
         '--disable-crypto-auth', '--disable-ntlm-wb', '--disable-tls-srp', '--disable-cookies',
+        '--disable-doh',
+        '--disable-mime',
+        '--disable-netrc',
+        '--disable-progress-meter',
+        '--disable-alt-svc',
         '--without-ssl', '--without-gnutls', '--without-nss', '--without-libssh2',
     ],
 
@@ -365,8 +406,8 @@ curl = AutotoolsProject(
 )
 
 libexpat = AutotoolsProject(
-    'https://github.com/libexpat/libexpat/releases/download/R_2_2_6/expat-2.2.6.tar.bz2',
-    '17b43c2716d521369f82fc2dc70f359860e90fa440bea65b3b85f0b246ea81f2',
+    'https://github.com/libexpat/libexpat/releases/download/R_2_2_9/expat-2.2.9.tar.bz2',
+    'f1063084dc4302a427dabcca499c8312b3a32a29b7d2506653ecc8f950a9a237',
     'lib/libexpat.a',
     [
         '--disable-shared', '--enable-static',
@@ -392,7 +433,7 @@ libnfs = AutotoolsProject(
 )
 
 boost = BoostProject(
-    'http://downloads.sourceforge.net/project/boost/boost/1.70.0/boost_1_70_0.tar.bz2',
-    '430ae8354789de4fd19ee52f3b1f739e1fba576f0aded0897c3c2bc00fb38778',
+    'https://dl.bintray.com/boostorg/release/1.74.0/source/boost_1_74_0.tar.bz2',
+    '83bfc1507731a0906e387fc28b7ef5417d591429e51e788417fe9ff025e116b1',
     'include/boost/version.hpp',
 )

python/build/meson.py

@@ -91,7 +91,12 @@ def configure(toolchain, src, build, args=()):
         '--cross-file', cross_file,
     ] + args
 
-    subprocess.check_call(configure, env=toolchain.env)
+    env = toolchain.env.copy()
+
+    # Meson 0.54 requires the BOOST_ROOT environment variable
+    env['BOOST_ROOT'] = toolchain.install_prefix
+
+    subprocess.check_call(configure, env=env)
 
 class MesonProject(Project):
     def __init__(self, url, md5, installed, configure_args=[],

src/AudioFormat.hxx

@@ -20,7 +20,7 @@
 #ifndef MPD_AUDIO_FORMAT_HXX
 #define MPD_AUDIO_FORMAT_HXX
 
-#include "pcm/SampleFormat.hxx"
+#include "pcm/SampleFormat.hxx" // IWYU pragma: export
 #include "util/Compiler.h"
 
 #include <chrono>

src/CommandLine.cxx

@@ -33,11 +33,11 @@
 #include "playlist/PlaylistRegistry.hxx"
 #include "playlist/PlaylistPlugin.hxx"
 #include "fs/AllocatedPath.hxx"
+#include "fs/NarrowPath.hxx"
 #include "fs/Traits.hxx"
 #include "fs/FileSystem.hxx"
 #include "fs/StandardDirectory.hxx"
 #include "system/Error.hxx"
-#include "util/Macros.hxx"
 #include "util/RuntimeError.hxx"
 #include "util/Domain.hxx"
 #include "util/OptionDef.hxx"
@@ -380,17 +380,7 @@ ParseCommandLine(int argc, char **argv, struct options &options,
 
 	if (config_file != nullptr) {
 		/* use specified configuration file */
-#ifdef _UNICODE
-		wchar_t buffer[MAX_PATH];
-		auto result = MultiByteToWideChar(CP_ACP, 0, config_file, -1,
-						  buffer, ARRAY_SIZE(buffer));
-		if (result <= 0)
-			throw MakeLastError("MultiByteToWideChar() failed");
-
-		ReadConfigFile(config, Path::FromFS(buffer));
-#else
-		ReadConfigFile(config, Path::FromFS(config_file));
-#endif
+		ReadConfigFile(config, FromNarrowPath(config_file));
 		return;
 	}
 

src/LocateUri.cxx

@@ -29,6 +29,8 @@
 #include "storage/StorageInterface.hxx"
 #endif
 
+#include <stdexcept>
+
 static LocatedUri
 LocateFileUri(const char *uri, const Client *client
 #ifdef ENABLE_DATABASE

src/Log.cxx

@@ -1,5 +1,5 @@
 /*
- * Copyright 2003-2018 The Music Player Daemon Project
+ * Copyright 2003-2019 The Music Player Daemon Project
  * http://www.musicpd.org
  *
  * This program is free software; you can redistribute it and/or modify
@@ -19,8 +19,7 @@
 
 #include "LogV.hxx"
 #include "util/Domain.hxx"
-
-#include <exception>
+#include "util/Exception.hxx"
 
 #include <stdio.h>
 #include <string.h>
@@ -29,20 +28,20 @@
 static constexpr Domain exception_domain("exception");
 
 void
-LogFormatV(const Domain &domain, LogLevel level,
+LogFormatV(LogLevel level, const Domain &domain,
 	   const char *fmt, va_list ap) noexcept
 {
 	char msg[1024];
 	vsnprintf(msg, sizeof(msg), fmt, ap);
-	Log(domain, level, msg);
+	Log(level, domain, msg);
 }
 
 void
-LogFormat(const Domain &domain, LogLevel level, const char *fmt, ...) noexcept
+LogFormat(LogLevel level, const Domain &domain, const char *fmt, ...) noexcept
 {
 	va_list ap;
 	va_start(ap, fmt);
-	LogFormatV(domain, level, fmt, ap);
+	LogFormatV(level, domain, fmt, ap);
 	va_end(ap);
 }
 
@@ -51,7 +50,7 @@ FormatDebug(const Domain &domain, const char *fmt, ...) noexcept
 {
 	va_list ap;
 	va_start(ap, fmt);
-	LogFormatV(domain, LogLevel::DEBUG, fmt, ap);
+	LogFormatV(LogLevel::DEBUG, domain, fmt, ap);
 	va_end(ap);
 }
 
@@ -60,7 +59,7 @@ FormatInfo(const Domain &domain, const char *fmt, ...) noexcept
 {
 	va_list ap;
 	va_start(ap, fmt);
-	LogFormatV(domain, LogLevel::INFO, fmt, ap);
+	LogFormatV(LogLevel::INFO, domain, fmt, ap);
 	va_end(ap);
 }
 
@@ -69,7 +68,7 @@ FormatDefault(const Domain &domain, const char *fmt, ...) noexcept
 {
 	va_list ap;
 	va_start(ap, fmt);
-	LogFormatV(domain, LogLevel::DEFAULT, fmt, ap);
+	LogFormatV(LogLevel::DEFAULT, domain, fmt, ap);
 	va_end(ap);
 }
 
@@ -78,7 +77,7 @@ FormatWarning(const Domain &domain, const char *fmt, ...) noexcept
 {
 	va_list ap;
 	va_start(ap, fmt);
-	LogFormatV(domain, LogLevel::WARNING, fmt, ap);
+	LogFormatV(LogLevel::WARNING, domain, fmt, ap);
 	va_end(ap);
 }
 
@@ -87,42 +86,24 @@ FormatError(const Domain &domain, const char *fmt, ...) noexcept
 {
 	va_list ap;
 	va_start(ap, fmt);
-	LogFormatV(domain, LogLevel::ERROR, fmt, ap);
+	LogFormatV(LogLevel::ERROR, domain, fmt, ap);
 	va_end(ap);
 }
 
 void
-LogError(const std::exception &e) noexcept
+Log(LogLevel level, const std::exception &e) noexcept
 {
-	Log(exception_domain, LogLevel::ERROR, e.what());
-
-	try {
-		std::rethrow_if_nested(e);
-	} catch (const std::exception &nested) {
-		LogError(nested, "nested");
-	} catch (...) {
-		Log(exception_domain, LogLevel::ERROR,
-		    "Unrecognized nested exception");
-	}
+	Log(level, exception_domain, GetFullMessage(e).c_str());
 }
 
 void
-LogError(const std::exception &e, const char *msg) noexcept
+Log(LogLevel level, const std::exception &e, const char *msg) noexcept
 {
-	FormatError(exception_domain, "%s: %s", msg, e.what());
-
-	try {
-		std::rethrow_if_nested(e);
-	} catch (const std::exception &nested) {
-		LogError(nested);
-	} catch (...) {
-		Log(exception_domain, LogLevel::ERROR,
-		    "Unrecognized nested exception");
-	}
+	LogFormat(level, exception_domain, "%s: %s", msg, GetFullMessage(e).c_str());
 }
 
 void
-FormatError(const std::exception &e, const char *fmt, ...) noexcept
+LogFormat(LogLevel level, const std::exception &e, const char *fmt, ...) noexcept
 {
 	char msg[1024];
 	va_list ap;
@@ -130,37 +111,24 @@ FormatError(const std::exception &e, const char *fmt, ...) noexcept
 	vsnprintf(msg, sizeof(msg), fmt, ap);
 	va_end(ap);
 
-	LogError(e, msg);
+	Log(level, e, msg);
 }
 
 void
-LogError(const std::exception_ptr &ep) noexcept
+Log(LogLevel level, const std::exception_ptr &ep) noexcept
 {
-	try {
-		std::rethrow_exception(ep);
-	} catch (const std::exception &e) {
-		LogError(e);
-	} catch (...) {
-		Log(exception_domain, LogLevel::ERROR,
-		    "Unrecognized exception");
-	}
+	Log(level, exception_domain, GetFullMessage(ep).c_str());
 }
 
 void
-LogError(const std::exception_ptr &ep, const char *msg) noexcept
+Log(LogLevel level, const std::exception_ptr &ep, const char *msg) noexcept
 {
-	try {
-		std::rethrow_exception(ep);
-	} catch (const std::exception &e) {
-		LogError(e, msg);
-	} catch (...) {
-		FormatError(exception_domain,
-			    "%s: Unrecognized exception", msg);
-	}
+	LogFormat(level, exception_domain, "%s: %s", msg,
+		  GetFullMessage(ep).c_str());
 }
 
 void
-FormatError(const std::exception_ptr &ep, const char *fmt, ...) noexcept
+LogFormat(LogLevel level, const std::exception_ptr &ep, const char *fmt, ...) noexcept
 {
 	char msg[1024];
 	va_list ap;
@@ -168,13 +136,13 @@ FormatError(const std::exception_ptr &ep, const char *fmt, ...) noexcept
 	vsnprintf(msg, sizeof(msg), fmt, ap);
 	va_end(ap);
 
-	LogError(ep, msg);
+	Log(level, ep, msg);
 }
 
 void
 LogErrno(const Domain &domain, int e, const char *msg) noexcept
 {
-	LogFormat(domain, LogLevel::ERROR, "%s: %s", msg, strerror(e));
+	LogFormat(LogLevel::ERROR, domain, "%s: %s", msg, strerror(e));
 }
 
 void

src/Log.hxx

@@ -1,5 +1,5 @@
 /*
- * Copyright 2003-2018 The Music Player Daemon Project
+ * Copyright 2003-2019 The Music Player Daemon Project
  * http://www.musicpd.org
  *
  * This program is free software; you can redistribute it and/or modify
@@ -28,16 +28,38 @@
 class Domain;
 
 void
-Log(const Domain &domain, LogLevel level, const char *msg) noexcept;
+Log(LogLevel level, const Domain &domain, const char *msg) noexcept;
 
 gcc_printf(3,4)
 void
-LogFormat(const Domain &domain, LogLevel level, const char *fmt, ...) noexcept;
+LogFormat(LogLevel level, const Domain &domain, const char *fmt, ...) noexcept;
+
+void
+Log(LogLevel level, const std::exception &e) noexcept;
+
+void
+Log(LogLevel level, const std::exception &e, const char *msg) noexcept;
+
+gcc_printf(3,4)
+void
+LogFormat(LogLevel level, const std::exception &e,
+	  const char *fmt, ...) noexcept;
+
+void
+Log(LogLevel level, const std::exception_ptr &ep) noexcept;
+
+void
+Log(LogLevel level, const std::exception_ptr &ep, const char *msg) noexcept;
+
+gcc_printf(3,4)
+void
+LogFormat(LogLevel level, const std::exception_ptr &ep,
+	  const char *fmt, ...) noexcept;
 
 static inline void
 LogDebug(const Domain &domain, const char *msg) noexcept
 {
-	Log(domain, LogLevel::DEBUG, msg);
+	Log(LogLevel::DEBUG, domain, msg);
 }
 
 gcc_printf(2,3)
@@ -47,7 +69,7 @@ FormatDebug(const Domain &domain, const char *fmt, ...) noexcept;
 static inline void
 LogInfo(const Domain &domain, const char *msg) noexcept
 {
-	Log(domain, LogLevel::INFO, msg);
+	Log(LogLevel::INFO, domain, msg);
 }
 
 gcc_printf(2,3)
@@ -57,7 +79,7 @@ FormatInfo(const Domain &domain, const char *fmt, ...) noexcept;
 static inline void
 LogDefault(const Domain &domain, const char *msg) noexcept
 {
-	Log(domain, LogLevel::DEFAULT, msg);
+	Log(LogLevel::DEFAULT, domain, msg);
 }
 
 gcc_printf(2,3)
@@ -67,7 +89,7 @@ FormatDefault(const Domain &domain, const char *fmt, ...) noexcept;
 static inline void
 LogWarning(const Domain &domain, const char *msg) noexcept
 {
-	Log(domain, LogLevel::WARNING, msg);
+	Log(LogLevel::WARNING, domain, msg);
 }
 
 gcc_printf(2,3)
@@ -77,28 +99,47 @@ FormatWarning(const Domain &domain, const char *fmt, ...) noexcept;
 static inline void
 LogError(const Domain &domain, const char *msg) noexcept
 {
-	Log(domain, LogLevel::ERROR, msg);
+	Log(LogLevel::ERROR, domain, msg);
 }
 
-void
-LogError(const std::exception &e) noexcept;
+inline void
+LogError(const std::exception &e) noexcept
+{
+	Log(LogLevel::ERROR, e);
+}
 
-void
-LogError(const std::exception &e, const char *msg) noexcept;
+inline void
+LogError(const std::exception &e, const char *msg) noexcept
+{
+	Log(LogLevel::ERROR, e, msg);
+}
 
-gcc_printf(2,3)
-void
-FormatError(const std::exception &e, const char *fmt, ...) noexcept;
+template<typename... Args>
+inline void
+FormatError(const std::exception &e, const char *fmt, Args&&... args) noexcept
+{
+	LogFormat(LogLevel::ERROR, e, fmt, std::forward<Args>(args)...);
+}
 
-void
-LogError(const std::exception_ptr &ep) noexcept;
+inline void
+LogError(const std::exception_ptr &ep) noexcept
+{
+	Log(LogLevel::ERROR, ep);
+}
 
-void
-LogError(const std::exception_ptr &ep, const char *msg) noexcept;
+inline void
+LogError(const std::exception_ptr &ep, const char *msg) noexcept
+{
+	Log(LogLevel::ERROR, ep, msg);
+}
 
-gcc_printf(2,3)
-void
-FormatError(const std::exception_ptr &ep, const char *fmt, ...) noexcept;
+template<typename... Args>
+inline void
+FormatError(const std::exception_ptr &ep,
+	    const char *fmt, Args&&... args) noexcept
+{
+	LogFormat(LogLevel::ERROR, ep, fmt, std::forward<Args>(args)...);
+}
 
 gcc_printf(2,3)
 void

src/LogBackend.cxx

@@ -1,5 +1,5 @@
 /*
- * Copyright 2003-2018 The Music Player Daemon Project
+ * Copyright 2003-2019 The Music Player Daemon Project
  * http://www.musicpd.org
  *
  * This program is free software; you can redistribute it and/or modify
@@ -61,7 +61,7 @@ ToAndroidLogLevel(LogLevel log_level) noexcept
 
 #else
 
-static LogLevel log_threshold = LogLevel::INFO;
+static LogLevel log_threshold = LogLevel::DEFAULT;
 
 static bool enable_timestamp;
 
@@ -176,7 +176,7 @@ FileLog(const Domain &domain, const char *message) noexcept
 #endif /* !ANDROID */
 
 void
-Log(const Domain &domain, LogLevel level, const char *msg) noexcept
+Log(LogLevel level, const Domain &domain, const char *msg) noexcept
 {
 #ifdef ANDROID
 	__android_log_print(ToAndroidLogLevel(level), "MPD",

src/LogBackend.hxx

@@ -1,5 +1,5 @@
 /*
- * Copyright 2003-2018 The Music Player Daemon Project
+ * Copyright 2003-2019 The Music Player Daemon Project
  * http://www.musicpd.org
  *
  * This program is free software; you can redistribute it and/or modify

src/LogV.hxx

@@ -1,5 +1,5 @@
 /*
- * Copyright 2003-2018 The Music Player Daemon Project
+ * Copyright 2003-2019 The Music Player Daemon Project
  * http://www.musicpd.org
  *
  * This program is free software; you can redistribute it and/or modify
@@ -25,7 +25,7 @@
 #include <stdarg.h>
 
 void
-LogFormatV(const Domain &domain, LogLevel level,
+LogFormatV(LogLevel level, const Domain &domain,
 	   const char *fmt, va_list ap) noexcept;
 
 #endif /* LOG_H */

src/Main.cxx

@@ -460,7 +460,7 @@ MainOrThrow(int argc, char *argv[])
 #endif
 
 	const unsigned max_clients =
-		raw_config.GetPositive(ConfigOption::MAX_CONN, 10);
+		raw_config.GetPositive(ConfigOption::MAX_CONN, 100);
 	instance->client_list = new ClientList(max_clients);
 
 	initialize_decoder_and_player(raw_config, config.replay_gain);

src/MusicChunk.hxx

@@ -43,7 +43,15 @@ struct MusicChunk;
 /**
  * Meta information for #MusicChunk.
  */
-struct MusicChunkInfo {
+struct alignas(8) MusicChunkInfo {
+	/* align to multiple of 8 bytes, which adds padding at the
+	   end, so the size of MusicChunk::data is also a multiple of
+	   8 bytes; this is a workaround for a bug in the DSD_U32 and
+	   DoP converters which require processing 8 bytes at a time,
+	   discarding the remainder */
+	/* TODO: once all converters have been fixed, we should remove
+	   this workaround */
+
 	/** the next chunk in a linked list */
 	MusicChunkPtr next;
 
@@ -119,6 +127,10 @@ struct MusicChunk : MusicChunkInfo {
 	/** the data (probably PCM) */
 	uint8_t data[CHUNK_SIZE - sizeof(MusicChunkInfo)];
 
+	/* TODO: remove this check once all converters have been fixed
+	   (see comment in struct MusicChunkInfo for details) */
+	static_assert(sizeof(data) % 8 == 0, "Wrong alignment");
+
 	/**
 	 * Prepares appending to the music chunk.  Returns a buffer
 	 * where you may write into.  After you are finished, call

src/Permission.cxx

@@ -101,7 +101,7 @@ initPermissions(const ConfigData &config)
 		const char *separator = strchr(param.value.c_str(),
 					       PERMISSION_PASSWORD_CHAR);
 
-		if (separator == NULL)
+		if (separator == nullptr)
 			throw FormatRuntimeError("\"%c\" not found in password string "
 						 "\"%s\", line %i",
 						 PERMISSION_PASSWORD_CHAR,

src/PlaylistDatabase.cxx

@@ -21,8 +21,8 @@
 #include "db/PlaylistVector.hxx"
 #include "fs/io/TextFile.hxx"
 #include "fs/io/BufferedOutputStream.hxx"
+#include "time/ChronoUtil.hxx"
 #include "util/StringStrip.hxx"
-#include "util/ChronoUtil.hxx"
 #include "util/RuntimeError.hxx"
 
 #include <string.h>

src/PluginUnavailable.hxx

@@ -1,5 +1,5 @@
 /*
- * Copyright 2003-2018 The Music Player Daemon Project
+ * Copyright 2003-2020 The Music Player Daemon Project
  * http://www.musicpd.org
  *
  * This program is free software; you can redistribute it and/or modify
@@ -27,10 +27,20 @@
  * that this plugin is unavailable.  It will be disabled, and MPD can
  * continue initialization.
  */
-class PluginUnavailable final : public std::runtime_error {
+class PluginUnavailable : public std::runtime_error {
 public:
-	explicit PluginUnavailable(const char *msg)
-		:std::runtime_error(msg) {}
+	using std::runtime_error::runtime_error;
+};
+
+/**
+ * Like #PluginUnavailable, but denotes that the plugin is not
+ * available because it was not explicitly enabled in the
+ * configuration.  The message may describe the necessary steps to
+ * enable it.
+ */
+class PluginUnconfigured : public PluginUnavailable {
+public:
+	using PluginUnavailable::PluginUnavailable;
 };
 
 #endif

src/ReplayGainGlobal.cxx

@@ -23,9 +23,9 @@
 #include "config/Data.hxx"
 #include "util/RuntimeError.hxx"
 
-#include <assert.h>
-#include <stdlib.h>
-#include <math.h>
+#include <cassert>
+#include <cstdlib>
+#include <cmath>
 
 static float
 ParsePreamp(const char *s)
@@ -33,14 +33,14 @@ ParsePreamp(const char *s)
 	assert(s != nullptr);
 
 	char *endptr;
-	float f = strtod(s, &endptr);
+	float f = std::strtof(s, &endptr);
 	if (endptr == s || *endptr != '\0')
 		throw std::invalid_argument("Not a numeric value");
 
-	if (f < -15 || f > 15)
+	if (f < -15.0f || f > 15.0f)
 		throw std::invalid_argument("Number must be between -15 and 15");
 
-	return pow(10, f / 20.0);
+	return std::pow(10.0f, f / 20.0f);
 }
 
 static float

src/ReplayGainInfo.cxx

@@ -20,7 +20,7 @@
 #include "ReplayGainInfo.hxx"
 #include "ReplayGainConfig.hxx"
 
-#include <math.h>
+#include <cmath>
 
 float
 ReplayGainTuple::CalculateScale(const ReplayGainConfig &config) const noexcept
@@ -28,13 +28,13 @@ ReplayGainTuple::CalculateScale(const ReplayGainConfig &config) const noexcept
 	float scale;
 
 	if (IsDefined()) {
-		scale = pow(10.0, gain / 20.0);
+		scale = std::pow(10.0f, gain / 20.0f);
 		scale *= config.preamp;
-		if (scale > 15.0)
-			scale = 15.0;
+		if (scale > 15.0f)
+			scale = 15.0f;
 
-		if (config.limit && scale * peak > 1.0)
-			scale = 1.0 / peak;
+		if (config.limit && scale * peak > 1.0f)
+			scale = 1.0f / peak;
 	} else
 		scale = config.missing_preamp;
 

src/ReplayGainInfo.hxx

@@ -38,6 +38,10 @@ struct ReplayGainTuple {
 		return gain > -100;
 	}
 
+	static constexpr ReplayGainTuple Undefined() noexcept {
+		return {-200.0f, 0.0f};
+	}
+
 	gcc_pure
 	float CalculateScale(const ReplayGainConfig &config) const noexcept;
 };
@@ -49,6 +53,13 @@ struct ReplayGainInfo {
 		return track.IsDefined() || album.IsDefined();
 	}
 
+	static constexpr ReplayGainInfo Undefined() noexcept {
+		return {
+			ReplayGainTuple::Undefined(),
+			ReplayGainTuple::Undefined(),
+		};
+	}
+
 	const ReplayGainTuple &Get(ReplayGainMode mode) const noexcept {
 		return mode == ReplayGainMode::ALBUM
 			? (album.IsDefined() ? album : track)

src/SongPrint.cxx

@@ -27,7 +27,7 @@
 #include "TagPrint.hxx"
 #include "client/Response.hxx"
 #include "fs/Traits.hxx"
-#include "util/ChronoUtil.hxx"
+#include "time/ChronoUtil.hxx"
 #include "util/UriUtil.hxx"
 
 #define SONG_FILE "file: "

src/SongSave.cxx

@@ -27,7 +27,7 @@
 #include "tag/ParseName.hxx"
 #include "tag/Tag.hxx"
 #include "tag/Builder.hxx"
-#include "util/ChronoUtil.hxx"
+#include "time/ChronoUtil.hxx"
 #include "util/StringAPI.hxx"
 #include "util/StringBuffer.hxx"
 #include "util/StringStrip.hxx"

src/SongUpdate.cxx

@@ -79,17 +79,22 @@ Song::UpdateFile(Storage &storage) noexcept
 	TagBuilder tag_builder;
 	auto new_audio_format = AudioFormat::Undefined();
 
-	const auto path_fs = storage.MapFS(relative_uri.c_str());
-	if (path_fs.IsNull()) {
-		const auto absolute_uri =
-			storage.MapUTF8(relative_uri.c_str());
-		if (!tag_stream_scan(absolute_uri.c_str(), tag_builder,
-				     &new_audio_format))
-			return false;
-	} else {
-		if (!ScanFileTagsWithGeneric(path_fs, tag_builder,
+	try {
+		const auto path_fs = storage.MapFS(relative_uri.c_str());
+		if (path_fs.IsNull()) {
+			const auto absolute_uri =
+				storage.MapUTF8(relative_uri.c_str());
+			if (!tag_stream_scan(absolute_uri.c_str(), tag_builder,
 					     &new_audio_format))
-			return false;
+				return false;
+		} else {
+			if (!ScanFileTagsWithGeneric(path_fs, tag_builder,
+						     &new_audio_format))
+				return false;
+		}
+	} catch (...) {
+		// TODO: log or propagate I/O errors?
+		return false;
 	}
 
 	mtime = info.mtime;
@@ -98,8 +103,6 @@ Song::UpdateFile(Storage &storage) noexcept
 	return true;
 }
 
-#endif
-
 #ifdef ENABLE_ARCHIVE
 
 Song *
@@ -145,6 +148,8 @@ Song::UpdateFileInArchive(ArchiveFile &archive) noexcept
 
 #endif
 
+#endif /* ENABLE_DATABASE */
+
 bool
 DetachedSong::LoadFile(Path path) noexcept
 {
@@ -153,8 +158,14 @@ DetachedSong::LoadFile(Path path) noexcept
 		return false;
 
 	TagBuilder tag_builder;
-	if (!ScanFileTagsWithGeneric(path, tag_builder))
+
+	try {
+		if (!ScanFileTagsWithGeneric(path, tag_builder))
+			return false;
+	} catch (...) {
+		// TODO: log or propagate I/O errors?
 		return false;
+	}
 
 	mtime = fi.GetModificationTime();
 	tag_builder.Commit(tag);
@@ -173,8 +184,14 @@ DetachedSong::Update() noexcept
 		return LoadFile(path_fs);
 	} else if (IsRemote()) {
 		TagBuilder tag_builder;
-		if (!tag_stream_scan(uri.c_str(), tag_builder))
+
+		try {
+			if (!tag_stream_scan(uri.c_str(), tag_builder))
+				return false;
+		} catch (...) {
+			// TODO: log or propagate I/O errors?
 			return false;
+		}
 
 		mtime = std::chrono::system_clock::time_point::min();
 		tag_builder.Commit(tag);

src/Stats.cxx

@@ -28,10 +28,10 @@
 #include "db/Stats.hxx"
 #include "system/Clock.hxx"
 #include "Log.hxx"
-#include "util/ChronoUtil.hxx"
+#include "time/ChronoUtil.hxx"
+#include "util/Math.hxx"
 
 #include <chrono>
-#include <cmath>
 
 #ifndef _WIN32
 /**
@@ -121,7 +121,7 @@ stats_print(Response &r, const Partition &partition)
 #else
 		 (unsigned)std::chrono::duration_cast<std::chrono::seconds>(std::chrono::steady_clock::now() - start_time).count(),
 #endif
-		 std::lround(partition.pc.GetTotalPlayTime().count()));
+		 lround(partition.pc.GetTotalPlayTime().count()));
 
 #ifdef ENABLE_DATABASE
 	const Database *db = partition.instance.GetDatabase();

src/TagFile.cxx

@@ -47,11 +47,11 @@ public:
 		 handler(_handler),
 		 is(nullptr) {}
 
-	bool ScanFile(const DecoderPlugin &plugin) noexcept {
+	bool ScanFile(const DecoderPlugin &plugin) {
 		return plugin.ScanFile(path_fs, handler);
 	}
 
-	bool ScanStream(const DecoderPlugin &plugin) noexcept {
+	bool ScanStream(const DecoderPlugin &plugin) {
 		if (plugin.scan_stream == nullptr)
 			return false;
 
@@ -73,14 +73,14 @@ public:
 		return plugin.ScanStream(*is, handler);
 	}
 
-	bool Scan(const DecoderPlugin &plugin) noexcept {
+	bool Scan(const DecoderPlugin &plugin) {
 		return plugin.SupportsSuffix(suffix) &&
 			(ScanFile(plugin) || ScanStream(plugin));
 	}
 };
 
 bool
-ScanFileTagsNoGeneric(Path path_fs, TagHandler &handler) noexcept
+ScanFileTagsNoGeneric(Path path_fs, TagHandler &handler)
 {
 	assert(!path_fs.IsNull());
 
@@ -100,7 +100,7 @@ ScanFileTagsNoGeneric(Path path_fs, TagHandler &handler) noexcept
 
 bool
 ScanFileTagsWithGeneric(Path path, TagBuilder &builder,
-			AudioFormat *audio_format) noexcept
+			AudioFormat *audio_format)
 {
 	FullTagHandler h(builder, audio_format);
 

src/TagFile.hxx

@@ -30,22 +30,26 @@ class TagBuilder;
  * but does not fall back to generic scanners (APE and ID3) if no tags
  * were found (but the file was recognized).
  *
+ * Throws on I/O error.
+ *
  * @return true if the file was recognized (even if no metadata was
  * found)
  */
 bool
-ScanFileTagsNoGeneric(Path path, TagHandler &handler) noexcept;
+ScanFileTagsNoGeneric(Path path, TagHandler &handler);
 
 /**
  * Scan the tags of a song file.  Invokes matching decoder plugins,
  * and falls back to generic scanners (APE and ID3) if no tags were
  * found (but the file was recognized).
  *
+ * Throws on I/O error.
+ *
  * @return true if the file was recognized (even if no metadata was
  * found)
  */
 bool
 ScanFileTagsWithGeneric(Path path, TagBuilder &builder,
-			AudioFormat *audio_format=nullptr) noexcept;
+			AudioFormat *audio_format=nullptr);
 
 #endif

src/TagStream.cxx

@@ -45,7 +45,7 @@ CheckDecoderPlugin(const DecoderPlugin &plugin,
 }
 
 bool
-tag_stream_scan(InputStream &is, TagHandler &handler) noexcept
+tag_stream_scan(InputStream &is, TagHandler &handler)
 {
 	assert(is.IsReady());
 
@@ -73,19 +73,17 @@ tag_stream_scan(InputStream &is, TagHandler &handler) noexcept
 }
 
 bool
-tag_stream_scan(const char *uri, TagHandler &handler) noexcept
-try {
+tag_stream_scan(const char *uri, TagHandler &handler)
+{
 	Mutex mutex;
 
 	auto is = InputStream::OpenReady(uri, mutex);
 	return tag_stream_scan(*is, handler);
-} catch (const std::exception &e) {
-	return false;
 }
 
 bool
 tag_stream_scan(InputStream &is, TagBuilder &builder,
-		AudioFormat *audio_format) noexcept
+		AudioFormat *audio_format)
 {
 	assert(is.IsReady());
 
@@ -102,12 +100,10 @@ tag_stream_scan(InputStream &is, TagBuilder &builder,
 
 bool
 tag_stream_scan(const char *uri, TagBuilder &builder,
-		AudioFormat *audio_format) noexcept
-try {
+		AudioFormat *audio_format)
+{
 	Mutex mutex;
 
 	auto is = InputStream::OpenReady(uri, mutex);
 	return tag_stream_scan(*is, builder, audio_format);
-} catch (const std::exception &e) {
-	return false;
 }

src/TagStream.hxx

@@ -29,29 +29,39 @@ class TagBuilder;
  * Scan the tags of an #InputStream.  Invokes matching decoder
  * plugins, but does not invoke the special "APE" and "ID3" scanners.
  *
+ * Throws on I/O error.
+ *
  * @return true if the file was recognized (even if no metadata was
  * found)
  */
 bool
-tag_stream_scan(InputStream &is, TagHandler &handler) noexcept;
+tag_stream_scan(InputStream &is, TagHandler &handler);
 
+/**
+ * Throws on I/O error.
+ */
 bool
-tag_stream_scan(const char *uri, TagHandler &handler) noexcept;
+tag_stream_scan(const char *uri, TagHandler &handler);
 
 /**
  * Scan the tags of an #InputStream.  Invokes matching decoder
  * plugins, and falls back to generic scanners (APE and ID3) if no
  * tags were found (but the file was recognized).
  *
+ * Throws on I/O error.
+ *
  * @return true if the file was recognized (even if no metadata was
  * found)
  */
 bool
 tag_stream_scan(InputStream &is, TagBuilder &builder,
-		AudioFormat *audio_format=nullptr) noexcept;
+		AudioFormat *audio_format=nullptr);
 
+/**
+ * Throws on I/O error.
+ */
 bool
 tag_stream_scan(const char *uri, TagBuilder &builder,
-		AudioFormat *audio_format=nullptr) noexcept;
+		AudioFormat *audio_format=nullptr);
 
 #endif

src/TimePrint.cxx

@@ -19,7 +19,7 @@
 
 #include "TimePrint.hxx"
 #include "client/Response.hxx"
-#include "util/TimeISO8601.hxx"
+#include "time/ISO8601.hxx"
 
 void
 time_print(Response &r, const char *name,

src/android/AudioManager.cxx

@@ -0,0 +1,56 @@
+/*
+ * Copyright 2003-2020 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 "AudioManager.hxx"
+#include "java/Class.hxx"
+#include "java/Exception.hxx"
+#include "java/File.hxx"
+
+#define STREAM_MUSIC 3
+
+AudioManager::AudioManager(JNIEnv *env, jobject obj) noexcept
+	: Java::GlobalObject(env, obj)
+{
+	Java::Class cls(env, env->GetObjectClass(Get()));
+	jmethodID method = env->GetMethodID(cls, "getStreamMaxVolume", "(I)I");
+	assert(method);
+	maxVolume = env->CallIntMethod(Get(), method, STREAM_MUSIC);
+
+	getStreamVolumeMethod = env->GetMethodID(cls, "getStreamVolume", "(I)I");
+	assert(getStreamVolumeMethod);
+
+	setStreamVolumeMethod = env->GetMethodID(cls, "setStreamVolume", "(III)V");
+	assert(setStreamVolumeMethod);
+}
+
+int
+AudioManager::GetVolume(JNIEnv *env)
+{
+	if (maxVolume == 0)
+		return 0;
+	return env->CallIntMethod(Get(), getStreamVolumeMethod, STREAM_MUSIC);
+}
+
+void
+AudioManager::SetVolume(JNIEnv *env, int volume)
+{
+	if (maxVolume == 0)
+		return;
+	env->CallVoidMethod(Get(), setStreamVolumeMethod, STREAM_MUSIC, volume, 0);
+}

src/android/AudioManager.hxx

@@ -0,0 +1,42 @@
+/*
+ * Copyright 2003-2020 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_ANDROID_AUDIO_MANAGER_HXX
+#define MPD_ANDROID_AUDIO_MANAGER_HXX
+
+#include "java/Object.hxx"
+
+class AudioManager : public Java::GlobalObject {
+	int maxVolume;
+	jmethodID getStreamVolumeMethod;
+	jmethodID setStreamVolumeMethod;
+
+public:
+	AudioManager(JNIEnv *env, jobject obj) noexcept;
+
+	AudioManager(std::nullptr_t) noexcept { maxVolume = 0; }
+
+	~AudioManager() noexcept {}
+
+	int GetMaxVolume() { return maxVolume; }
+	int GetVolume(JNIEnv *env);
+	void SetVolume(JNIEnv *env, int);
+};
+
+#endif

src/android/Context.cxx

@@ -1,5 +1,5 @@
 /*
- * Copyright 2003-2018 The Music Player Daemon Project
+ * Copyright 2003-2019 The Music Player Daemon Project
  * http://www.musicpd.org
  *
  * This program is free software; you can redistribute it and/or modify
@@ -20,10 +20,13 @@
 #include "Context.hxx"
 #include "java/Class.hxx"
 #include "java/File.hxx"
+#include "java/String.hxx"
 #include "fs/AllocatedPath.hxx"
 
+#include "AudioManager.hxx"
+
 AllocatedPath
-Context::GetCacheDir(JNIEnv *env) const
+Context::GetCacheDir(JNIEnv *env) const noexcept
 {
 	assert(env != nullptr);
 
@@ -40,3 +43,21 @@ Context::GetCacheDir(JNIEnv *env) const
 
 	return Java::File::ToAbsolutePath(env, file);
 }
+
+AudioManager *
+Context::GetAudioManager(JNIEnv *env) noexcept
+{
+	assert(env != nullptr);
+
+	Java::Class cls(env, env->GetObjectClass(Get()));
+	jmethodID method = env->GetMethodID(cls, "getSystemService",
+					    "(Ljava/lang/String;)Ljava/lang/Object;");
+	assert(method);
+
+	Java::String name(env, "audio");
+	jobject am = env->CallObjectMethod(Get(), method, name.Get());
+	if (Java::DiscardException(env) || am == nullptr)
+		return nullptr;
+
+    return new AudioManager(env, am);
+}

src/android/Context.hxx

@@ -1,5 +1,5 @@
 /*
- * Copyright 2003-2018 The Music Player Daemon Project
+ * Copyright 2003-2019 The Music Player Daemon Project
  * http://www.musicpd.org
  *
  * This program is free software; you can redistribute it and/or modify
@@ -23,13 +23,18 @@
 #include "java/Object.hxx"
 
 class AllocatedPath;
+class AudioManager;
 
-class Context : public Java::Object {
+class Context : public Java::GlobalObject {
 public:
-	Context(JNIEnv *env, jobject obj):Java::Object(env, obj) {}
+	Context(JNIEnv *env, jobject obj) noexcept
+		:Java::GlobalObject(env, obj) {}
 
 	gcc_pure
-	AllocatedPath GetCacheDir(JNIEnv *env) const;
+	AllocatedPath GetCacheDir(JNIEnv *env) const noexcept;
+
+	gcc_pure
+	AudioManager *GetAudioManager(JNIEnv *env) noexcept;
 };
 
 #endif

src/android/LogListener.hxx

@@ -22,9 +22,9 @@
 
 #include "java/Object.hxx"
 
-class LogListener : public Java::Object {
+class LogListener : public Java::GlobalObject {
 public:
-	LogListener(JNIEnv *env, jobject obj):Java::Object(env, obj) {}
+	LogListener(JNIEnv *env, jobject obj):Java::GlobalObject(env, obj) {}
 
 	void OnLog(JNIEnv *env, int priority, const char *fmt, ...) const;
 };

src/apple/AudioObject.cxx

@@ -0,0 +1,40 @@
+/*
+ * Copyright 2020 Max Kellermann <max.kellermann@gmail.com>
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *
+ * - Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the
+ * distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE
+ * FOUNDATION OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include "AudioObject.hxx"
+#include "StringRef.hxx"
+
+Apple::StringRef
+AudioObjectGetStringProperty(AudioObjectID inObjectID,
+			     const AudioObjectPropertyAddress &inAddress)
+{
+	auto s = AudioObjectGetPropertyDataT<CFStringRef>(inObjectID,
+							  inAddress);
+	return Apple::StringRef(s);
+}

src/apple/AudioObject.hxx

@@ -0,0 +1,105 @@
+/*
+ * Copyright 2020 Max Kellermann <max.kellermann@gmail.com>
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *
+ * - Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the
+ * distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE
+ * FOUNDATION OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef APPLE_AUDIO_OBJECT_HXX
+#define APPLE_AUDIO_OBJECT_HXX
+
+#include "Throw.hxx"
+#include "util/AllocatedArray.hxx"
+
+#include <CoreAudio/AudioHardware.h>
+
+#include <cstddef>
+
+namespace Apple {
+class StringRef;
+}
+
+inline std::size_t
+AudioObjectGetPropertyDataSize(AudioObjectID inObjectID,
+			       const AudioObjectPropertyAddress &inAddress)
+{
+	UInt32 size;
+	OSStatus status = AudioObjectGetPropertyDataSize(inObjectID,
+							 &inAddress,
+							 0, nullptr, &size);
+	if (status != noErr)
+		Apple::ThrowOSStatus(status);
+
+	return size;
+}
+
+template<typename T>
+T
+AudioObjectGetPropertyDataT(AudioObjectID inObjectID,
+			    const AudioObjectPropertyAddress &inAddress)
+{
+	OSStatus status;
+	UInt32 size = sizeof(T);
+	T value;
+
+	status = AudioObjectGetPropertyData(inObjectID, &inAddress,
+					    0, nullptr,
+					    &size, &value);
+	if (status != noErr)
+		Apple::ThrowOSStatus(status);
+
+	return value;
+}
+
+Apple::StringRef
+AudioObjectGetStringProperty(AudioObjectID inObjectID,
+			     const AudioObjectPropertyAddress &inAddress);
+
+template<typename T>
+AllocatedArray<T>
+AudioObjectGetPropertyDataArray(AudioObjectID inObjectID,
+			       const AudioObjectPropertyAddress &inAddress)
+{
+	OSStatus status;
+	UInt32 size;
+
+	status = AudioObjectGetPropertyDataSize(inObjectID,
+						&inAddress,
+						0, nullptr, &size);
+	if (status != noErr)
+		Apple::ThrowOSStatus(status);
+
+	AllocatedArray<T> result(size / sizeof(T));
+
+	status = AudioObjectGetPropertyData(inObjectID, &inAddress,
+					    0, nullptr,
+					    &size, result.begin());
+	if (status != noErr)
+		Apple::ThrowOSStatus(status);
+
+	return result;
+}
+
+#endif

src/apple/AudioUnit.hxx

@@ -0,0 +1,111 @@
+/*
+ * Copyright 2020 Max Kellermann <max.kellermann@gmail.com>
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *
+ * - Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the
+ * distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE
+ * FOUNDATION OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef APPLE_AUDIO_UNIT_HXX
+#define APPLE_AUDIO_UNIT_HXX
+
+#include "Throw.hxx"
+
+#include <AudioUnit/AudioUnit.h>
+
+template<typename T>
+T
+AudioUnitGetPropertyT(AudioUnit inUnit, AudioUnitPropertyID inID,
+		      AudioUnitScope inScope,
+		      AudioUnitElement inElement)
+{
+	UInt32 size = sizeof(T);
+	T value;
+
+	OSStatus status = AudioUnitGetProperty(inUnit, inID, inScope,
+					       inElement,
+					       &value, &size);
+	if (status != noErr)
+		Apple::ThrowOSStatus(status);
+
+	return value;
+}
+
+template<typename T>
+void
+AudioUnitSetPropertyT(AudioUnit inUnit, AudioUnitPropertyID inID,
+		      AudioUnitScope inScope,
+		      AudioUnitElement inElement,
+		      const T &value)
+{
+	OSStatus status = AudioUnitSetProperty(inUnit, inID, inScope,
+					       inElement,
+					       &value, sizeof(value));
+	if (status != noErr)
+		Apple::ThrowOSStatus(status);
+}
+
+inline void
+AudioUnitSetCurrentDevice(AudioUnit inUnit, const AudioDeviceID &value)
+{
+	AudioUnitSetPropertyT(inUnit, kAudioOutputUnitProperty_CurrentDevice,
+			      kAudioUnitScope_Global, 0,
+			      value);
+}
+
+inline void
+AudioUnitSetInputStreamFormat(AudioUnit inUnit,
+			      const AudioStreamBasicDescription &value)
+{
+	AudioUnitSetPropertyT(inUnit, kAudioUnitProperty_StreamFormat,
+			      kAudioUnitScope_Input, 0,
+			      value);
+}
+
+inline void
+AudioUnitSetInputRenderCallback(AudioUnit inUnit,
+				const AURenderCallbackStruct &value)
+{
+	AudioUnitSetPropertyT(inUnit, kAudioUnitProperty_SetRenderCallback,
+			      kAudioUnitScope_Input, 0,
+			      value);
+}
+
+inline UInt32
+AudioUnitGetBufferFrameSize(AudioUnit inUnit)
+{
+	return AudioUnitGetPropertyT<UInt32>(inUnit,
+					     kAudioDevicePropertyBufferFrameSize,
+					     kAudioUnitScope_Global, 0);
+}
+
+inline void
+AudioUnitSetBufferFrameSize(AudioUnit inUnit, const UInt32 &value)
+{
+	AudioUnitSetPropertyT(inUnit, kAudioDevicePropertyBufferFrameSize,
+			      kAudioUnitScope_Global, 0,
+			      value);
+}
+
+#endif

src/apple/ErrorRef.hxx

@@ -0,0 +1,75 @@
+/*
+ * Copyright 2020 Max Kellermann <max.kellermann@gmail.com>
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *
+ * - Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the
+ * distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE
+ * FOUNDATION OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef APPLE_ERROR_REF_HXX
+#define APPLE_ERROR_REF_HXX
+
+#include <CoreFoundation/CFError.h>
+
+#include <utility>
+
+namespace Apple {
+
+class ErrorRef {
+	CFErrorRef ref = nullptr;
+
+public:
+	explicit ErrorRef(CFErrorRef _ref) noexcept
+		:ref(_ref) {}
+
+	ErrorRef(CFAllocatorRef allocator, CFErrorDomain domain,
+		 CFIndex code, CFDictionaryRef userInfo) noexcept
+		:ref(CFErrorCreate(allocator, domain, code, userInfo)) {}
+
+	ErrorRef(ErrorRef &&src) noexcept
+		:ref(std::exchange(src.ref, nullptr)) {}
+
+	~ErrorRef() noexcept {
+		if (ref)
+			CFRelease(ref);
+	}
+
+	ErrorRef &operator=(ErrorRef &&src) noexcept {
+		using std::swap;
+		swap(ref, src.ref);
+		return *this;
+	}
+
+	operator bool() const noexcept {
+		return ref != nullptr;
+	}
+
+	CFStringRef CopyDescription() const noexcept {
+		return CFErrorCopyDescription(ref);
+	}
+};
+
+} // namespace Apple
+
+#endif

src/apple/StringRef.hxx

@@ -0,0 +1,73 @@
+/*
+ * Copyright 2020 Max Kellermann <max.kellermann@gmail.com>
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *
+ * - Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the
+ * distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE
+ * FOUNDATION OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef APPLE_STRING_REF_HXX
+#define APPLE_STRING_REF_HXX
+
+#include <CoreFoundation/CFString.h>
+
+#include <utility>
+
+namespace Apple {
+
+class StringRef {
+	CFStringRef ref = nullptr;
+
+public:
+	explicit StringRef(CFStringRef _ref) noexcept
+		:ref(_ref) {}
+
+	StringRef(StringRef &&src) noexcept
+		:ref(std::exchange(src.ref, nullptr)) {}
+
+	~StringRef() noexcept {
+		if (ref)
+			CFRelease(ref);
+	}
+
+	StringRef &operator=(StringRef &&src) noexcept {
+		using std::swap;
+		swap(ref, src.ref);
+		return *this;
+	}
+
+	operator bool() const noexcept {
+		return ref != nullptr;
+	}
+
+	bool GetCString(char *buffer, std::size_t size,
+			CFStringEncoding encoding=kCFStringEncodingUTF8) const noexcept
+	{
+		return CFStringGetCString(ref, buffer, size, encoding);
+	}
+};
+
+} // namespace Apple
+
+#endif

src/apple/Throw.cxx

@@ -0,0 +1,67 @@
+/*
+ * Copyright 2020 Max Kellermann <max.kellermann@gmail.com>
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *
+ * - Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the
+ * distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE
+ * FOUNDATION OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include "Throw.hxx"
+#include "ErrorRef.hxx"
+#include "StringRef.hxx"
+
+#include <stdexcept>
+
+namespace Apple {
+
+void
+ThrowOSStatus(OSStatus status)
+{
+	const Apple::ErrorRef cferr(nullptr, kCFErrorDomainOSStatus,
+				    status, nullptr);
+	const Apple::StringRef cfstr(cferr.CopyDescription());
+
+	char msg[1024];
+	if (!cfstr.GetCString(msg, sizeof(msg)))
+		throw std::runtime_error("Unknown OSStatus");
+
+	throw std::runtime_error(msg);
+}
+
+void
+ThrowOSStatus(OSStatus status, const char *_msg)
+{
+	const Apple::ErrorRef cferr(nullptr, kCFErrorDomainOSStatus,
+				    status, nullptr);
+	const Apple::StringRef cfstr(cferr.CopyDescription());
+
+	char msg[1024];
+	strcpy(msg, _msg);
+	size_t length = strlen(msg);
+
+	cfstr.GetCString(msg + length, sizeof(msg) - length);
+	throw std::runtime_error(msg);
+}
+
+} // namespace Apple

src/apple/Throw.hxx

@@ -0,0 +1,45 @@
+/*
+ * Copyright 2020 Max Kellermann <max.kellermann@gmail.com>
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *
+ * - Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the
+ * distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE
+ * FOUNDATION OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef APPLE_THROW_HXX
+#define APPLE_THROW_HXX
+
+#include <CoreFoundation/CFBase.h>
+
+namespace Apple {
+
+void
+ThrowOSStatus(OSStatus status);
+
+void
+ThrowOSStatus(OSStatus status, const char *msg);
+
+} // namespace Apple
+
+#endif

src/apple/meson.build

@@ -0,0 +1,28 @@
+if not is_darwin
+  apple_dep = dependency('', required: false)
+  subdir_done()
+endif
+
+audiounit_dep = declare_dependency(
+  link_args: ['-framework', 'AudioUnit', '-framework', 'CoreAudio', '-framework', 'CoreServices'],
+  dependencies: [
+    boost_dep,
+  ],
+)
+
+apple = static_library(
+  'apple',
+  'AudioObject.cxx',
+  'Throw.cxx',
+  include_directories: inc,
+  dependencies: [
+    audiounit_dep,
+  ],
+)
+
+apple_dep = declare_dependency(
+  link_with: apple,
+  dependencies: [
+    audiounit_dep,
+  ],
+)

src/archive/plugins/Bzip2ArchivePlugin.cxx

@@ -58,9 +58,9 @@ public:
 class Bzip2InputStream final : public InputStream {
 	std::shared_ptr<InputStream> input;
 
-	bool eof = false;
+	bz_stream bzstream{};
 
-	bz_stream bzstream;
+	bool eof = false;
 
 	char buffer[5000];
 
@@ -68,7 +68,7 @@ public:
 	Bzip2InputStream(const std::shared_ptr<InputStream> &_input,
 			 const char *uri,
 			 Mutex &mutex);
-	~Bzip2InputStream();
+	~Bzip2InputStream() noexcept override;
 
 	/* virtual methods from InputStream */
 	bool IsEOF() noexcept override;
@@ -79,25 +79,6 @@ private:
 	bool FillBuffer();
 };
 
-/* single archive handling allocation helpers */
-
-inline void
-Bzip2InputStream::Open()
-{
-	bzstream.bzalloc = nullptr;
-	bzstream.bzfree = nullptr;
-	bzstream.opaque = nullptr;
-
-	bzstream.next_in = (char *)buffer;
-	bzstream.avail_in = 0;
-
-	int ret = BZ2_bzDecompressInit(&bzstream, 0, 0);
-	if (ret != BZ_OK)
-		throw std::runtime_error("BZ2_bzDecompressInit() has failed");
-
-	SetReady();
-}
-
 /* archive open && listing routine */
 
 static std::unique_ptr<ArchiveFile>
@@ -116,10 +97,16 @@ Bzip2InputStream::Bzip2InputStream(const std::shared_ptr<InputStream> &_input,
 	:InputStream(_uri, _mutex),
 	 input(_input)
 {
-	Open();
+	bzstream.next_in = (char *)buffer;
+
+	int ret = BZ2_bzDecompressInit(&bzstream, 0, 0);
+	if (ret != BZ_OK)
+		throw std::runtime_error("BZ2_bzDecompressInit() has failed");
+
+	SetReady();
 }
 
-Bzip2InputStream::~Bzip2InputStream()
+Bzip2InputStream::~Bzip2InputStream() noexcept
 {
 	BZ2_bzDecompressEnd(&bzstream);
 }
@@ -149,22 +136,18 @@ Bzip2InputStream::FillBuffer()
 size_t
 Bzip2InputStream::Read(void *ptr, size_t length)
 {
-	const ScopeUnlock unlock(mutex);
-
-	int bz_result;
-	size_t nbytes = 0;
-
 	if (eof)
 		return 0;
 
+	const ScopeUnlock unlock(mutex);
+
 	bzstream.next_out = (char *)ptr;
 	bzstream.avail_out = length;
 
 	do {
-		if (!FillBuffer())
-			return 0;
+		const bool had_input = FillBuffer();
 
-		bz_result = BZ2_bzDecompress(&bzstream);
+		const int bz_result = BZ2_bzDecompress(&bzstream);
 
 		if (bz_result == BZ_STREAM_END) {
 			eof = true;
@@ -173,9 +156,12 @@ Bzip2InputStream::Read(void *ptr, size_t length)
 
 		if (bz_result != BZ_OK)
 			throw std::runtime_error("BZ2_bzDecompress() has failed");
+
+		if (!had_input && bzstream.avail_out == length)
+			throw std::runtime_error("Unexpected end of bzip2 file");
 	} while (bzstream.avail_out == length);
 
-	nbytes = length - bzstream.avail_out;
+	const size_t nbytes = length - bzstream.avail_out;
 	offset += nbytes;
 
 	return nbytes;

src/archive/plugins/Iso9660ArchivePlugin.cxx

@@ -28,14 +28,16 @@
 #include "input/InputStream.hxx"
 #include "fs/Path.hxx"
 #include "util/RuntimeError.hxx"
+#include "util/StringCompare.hxx"
+#include "util/WritableBuffer.hxx"
 
 #include <cdio/iso9660.h>
 
+#include <array>
+
 #include <stdlib.h>
 #include <string.h>
 
-#define CEILING(x, y) ((x+(y-1))/y)
-
 struct Iso9660 {
 	iso9660_t *const iso;
 
@@ -93,7 +95,10 @@ Iso9660ArchiveFile::Visit(char *path, size_t length, size_t capacity,
 		auto *statbuf = (iso9660_stat_t *)
 			_cdio_list_node_data(entnode);
 		const char *filename = statbuf->filename;
-		if (strcmp(filename, ".") == 0 || strcmp(filename, "..") == 0)
+		if (StringIsEmpty(filename) ||
+		    PathTraitsUTF8::IsSpecialFilename(filename))
+			/* skip empty names (libcdio bug?) */
+			/* skip special names like "." and ".." */
 			continue;
 
 		size_t filename_length = strlen(filename);
@@ -138,26 +143,86 @@ Iso9660ArchiveFile::Visit(ArchiveVisitor &visitor)
 class Iso9660InputStream final : public InputStream {
 	std::shared_ptr<Iso9660> iso;
 
-	iso9660_stat_t *statbuf;
+	const lsn_t lsn;
+
+	/**
+	 * libiso9660 can only read whole sectors at a time, and this
+	 * buffer is used to store one whole sector and allow Read()
+	 * to handle partial sector reads.
+	 */
+	class BlockBuffer {
+		size_t position = 0, fill = 0;
+
+		std::array<uint8_t, ISO_BLOCKSIZE> data;
+
+	public:
+		ConstBuffer<uint8_t> Read() const noexcept {
+			assert(fill <= data.size());
+			assert(position <= fill);
+
+			return {&data[position], &data[fill]};
+		}
+
+		void Consume(size_t nbytes) noexcept {
+			assert(nbytes <= Read().size);
+
+			position += nbytes;
+		}
+
+		WritableBuffer<uint8_t> Write() noexcept {
+			assert(Read().empty());
+
+			return {data.data(), data.size()};
+		}
+
+		void Append(size_t nbytes) noexcept {
+			assert(Read().empty());
+			assert(nbytes <= data.size());
+
+			fill = nbytes;
+			position = 0;
+		}
+
+		void Clear() noexcept {
+			position = fill = 0;
+		}
+	};
+
+	BlockBuffer buffer;
+
+	/**
+	 * Skip this number of bytes of the first sector after filling
+	 * the buffer next time.  This is used for seeking into the
+	 * middle of a sector.
+	 */
+	size_t skip = 0;
 
 public:
 	Iso9660InputStream(const std::shared_ptr<Iso9660> &_iso,
 			   const char *_uri,
 			   Mutex &_mutex,
-			   iso9660_stat_t *_statbuf)
+			   lsn_t _lsn, offset_type _size)
 		:InputStream(_uri, _mutex),
-		 iso(_iso), statbuf(_statbuf) {
-		size = statbuf->size;
+		 iso(_iso),
+		 lsn(_lsn)
+	{
+		size = _size;
+		seekable = true;
 		SetReady();
 	}
 
-	~Iso9660InputStream() {
-		free(statbuf);
-	}
-
 	/* virtual methods from InputStream */
 	bool IsEOF() noexcept override;
 	size_t Read(void *ptr, size_t size) override;
+
+	void Seek(offset_type new_offset) override {
+		if (new_offset > size)
+			throw std::runtime_error("Invalid seek offset");
+
+		skip = new_offset % ISO_BLOCKSIZE;
+		offset = new_offset - skip;
+		buffer.Clear();
+	}
 };
 
 InputStreamPtr
@@ -169,42 +234,78 @@ Iso9660ArchiveFile::OpenStream(const char *pathname,
 		throw FormatRuntimeError("not found in the ISO file: %s",
 					 pathname);
 
+	const lsn_t lsn = statbuf->lsn;
+	const offset_type size = statbuf->size;
+	free(statbuf);
+
 	return std::make_unique<Iso9660InputStream>(iso, pathname, mutex,
-						    statbuf);
+						    lsn, size);
 }
 
 size_t
 Iso9660InputStream::Read(void *ptr, size_t read_size)
 {
-	const ScopeUnlock unlock(mutex);
-
-	int readed = 0;
-	int no_blocks, cur_block;
-	size_t left_bytes = statbuf->size - offset;
-
-	if (left_bytes < read_size) {
-		no_blocks = CEILING(left_bytes, ISO_BLOCKSIZE);
-	} else {
-		no_blocks = read_size / ISO_BLOCKSIZE;
-	}
-
-	if (no_blocks == 0)
+	const offset_type remaining = size - offset;
+	if (remaining == 0)
 		return 0;
 
-	cur_block = offset / ISO_BLOCKSIZE;
+	if (offset_type(read_size) > remaining)
+		read_size = remaining;
 
-	readed = iso->SeekRead(ptr, statbuf->lsn + cur_block, no_blocks);
+	auto r = buffer.Read();
 
-	if (readed != no_blocks * ISO_BLOCKSIZE)
-		throw FormatRuntimeError("error reading ISO file at lsn %lu",
-					 (unsigned long)cur_block);
+	if (r.empty()) {
+		/* the buffer is empty - read more data from the ISO file */
 
-	if (left_bytes < read_size) {
-		readed = left_bytes;
+		assert(offset % ISO_BLOCKSIZE == 0);
+
+		const ScopeUnlock unlock(mutex);
+
+		const lsn_t read_lsn = lsn + offset / ISO_BLOCKSIZE;
+
+		if (read_size >= ISO_BLOCKSIZE) {
+			/* big read - read right into the caller's buffer */
+
+			auto nbytes = iso->SeekRead(ptr, read_lsn,
+						    read_size / ISO_BLOCKSIZE);
+			if (nbytes <= 0)
+				throw std::runtime_error("Failed to read ISO9660 file");
+
+			offset += nbytes;
+			return nbytes;
+		}
+
+		/* fill the buffer */
+
+		auto w = buffer.Write();
+		auto nbytes = iso->SeekRead(w.data, read_lsn,
+					    w.size / ISO_BLOCKSIZE);
+		if (nbytes <= 0)
+			throw std::runtime_error("Failed to read ISO9660 file");
+
+		buffer.Append(nbytes);
+
+		r = buffer.Read();
+
+		if (skip > 0) {
+			if (skip >= r.size)
+				throw std::runtime_error("Premature end of ISO9660 track");
+
+			buffer.Consume(skip);
+			skip = 0;
+
+			r = buffer.Read();
+		}
 	}
 
-	offset += readed;
-	return readed;
+	assert(!r.empty());
+	assert(skip == 0);
+
+	size_t nbytes = std::min(read_size, r.size);
+	memcpy(ptr, r.data, nbytes);
+	buffer.Consume(nbytes);
+	offset += nbytes;
+	return nbytes;
 }
 
 bool

src/archive/plugins/ZzipArchivePlugin.cxx

@@ -1,5 +1,5 @@
 /*
- * Copyright 2003-2018 The Music Player Daemon Project
+ * Copyright 2003-2019 The Music Player Daemon Project
  * http://www.musicpd.org
  *
  * This program is free software; you can redistribute it and/or modify
@@ -27,10 +27,13 @@
 #include "../ArchiveVisitor.hxx"
 #include "input/InputStream.hxx"
 #include "fs/Path.hxx"
+#include "system/Error.hxx"
 #include "util/RuntimeError.hxx"
 
 #include <zzip/zzip.h>
 
+#include <inttypes.h> /* for PRIoffset (PRIu64) */
+
 struct ZzipDir {
 	ZZIP_DIR *const dir;
 
@@ -53,10 +56,11 @@ class ZzipArchiveFile final : public ArchiveFile {
 	std::shared_ptr<ZzipDir> dir;
 
 public:
-	ZzipArchiveFile(std::shared_ptr<ZzipDir> &&_dir)
-		:dir(std::move(_dir)) {}
+	template<typename D>
+	explicit ZzipArchiveFile(D &&_dir) noexcept
+		:dir(std::forward<D>(_dir)) {}
 
-	virtual void Visit(ArchiveVisitor &visitor) override;
+	void Visit(ArchiveVisitor &visitor) override;
 
 	InputStreamPtr OpenStream(const char *path,
 				  Mutex &mutex) override;
@@ -90,11 +94,12 @@ class ZzipInputStream final : public InputStream {
 	ZZIP_FILE *const file;
 
 public:
-	ZzipInputStream(const std::shared_ptr<ZzipDir> _dir, const char *_uri,
+	template<typename D>
+	ZzipInputStream(D &&_dir, const char *_uri,
 			Mutex &_mutex,
 			ZZIP_FILE *_file)
 		:InputStream(_uri, _mutex),
-		 dir(_dir), file(_file) {
+		 dir(std::forward<D>(_dir)), file(_file) {
 		//we are seekable (but its not recommendent to do so)
 		seekable = true;
 
@@ -105,7 +110,7 @@ public:
 		SetReady();
 	}
 
-	~ZzipInputStream() {
+	~ZzipInputStream() noexcept override {
 		zzip_file_close(file);
 	}
 
@@ -120,9 +125,19 @@ ZzipArchiveFile::OpenStream(const char *pathname,
 			    Mutex &mutex)
 {
 	ZZIP_FILE *_file = zzip_file_open(dir->dir, pathname, 0);
-	if (_file == nullptr)
-		throw FormatRuntimeError("not found in the ZIP file: %s",
-					 pathname);
+	if (_file == nullptr) {
+		const auto error = (zzip_error_t)zzip_error(dir->dir);
+		switch (error) {
+		case ZZIP_ENOENT:
+			throw FormatFileNotFound("Failed to open '%s' in ZIP file",
+						 pathname);
+
+		default:
+			throw FormatRuntimeError("Failed to open '%s' in ZIP file: %s",
+						 pathname,
+						 zzip_strerror(error));
+		}
+	}
 
 	return std::make_unique<ZzipInputStream>(dir, pathname,
 						 mutex,
@@ -134,12 +149,17 @@ ZzipInputStream::Read(void *ptr, size_t read_size)
 {
 	const ScopeUnlock unlock(mutex);
 
-	int ret = zzip_file_read(file, ptr, read_size);
-	if (ret < 0)
+	zzip_ssize_t nbytes = zzip_file_read(file, ptr, read_size);
+	if (nbytes < 0)
 		throw std::runtime_error("zzip_file_read() has failed");
 
+	if (nbytes == 0 && !IsEOF())
+		throw FormatRuntimeError("Unexpected end of file %s"
+					 " at %" PRIoffset " of %" PRIoffset,
+					 GetURI(), GetOffset(), GetSize());
+
 	offset = zzip_tell(file);
-	return ret;
+	return nbytes;
 }
 
 bool

src/client/ClientInternal.hxx

@@ -35,6 +35,6 @@ extern size_t client_max_command_list_size;
 extern size_t client_max_output_buffer_size;
 
 CommandResult
-client_process_line(Client &client, char *line);
+client_process_line(Client &client, char *line) noexcept;
 
 #endif

src/client/ClientProcess.cxx

@@ -30,7 +30,7 @@
 
 static CommandResult
 client_process_command_list(Client &client, bool list_ok,
-			    std::list<std::string> &&list)
+			    std::list<std::string> &&list) noexcept
 {
 	CommandResult ret = CommandResult::OK;
 	unsigned num = 0;
@@ -51,7 +51,7 @@ client_process_command_list(Client &client, bool list_ok,
 }
 
 CommandResult
-client_process_line(Client &client, char *line)
+client_process_line(Client &client, char *line) noexcept
 {
 	CommandResult ret;
 

src/command/AllCommands.cxx

@@ -193,7 +193,7 @@ static constexpr struct command commands[] = {
 	{ "subscribe", PERMISSION_READ, 1, 1, handle_subscribe },
 	{ "swap", PERMISSION_CONTROL, 2, 2, handle_swap },
 	{ "swapid", PERMISSION_CONTROL, 2, 2, handle_swapid },
-	{ "tagtypes", PERMISSION_READ, 0, -1, handle_tagtypes },
+	{ "tagtypes", PERMISSION_NONE, 0, -1, handle_tagtypes },
 	{ "toggleoutput", PERMISSION_ADMIN, 1, 1, handle_toggleoutput },
 #ifdef ENABLE_DATABASE
 	{ "unmount", PERMISSION_ADMIN, 1, 1, handle_unmount },
@@ -206,9 +206,10 @@ static constexpr struct command commands[] = {
 
 static constexpr unsigned num_commands = ARRAY_SIZE(commands);
 
+gcc_pure
 static bool
 command_available(gcc_unused const Partition &partition,
-		  gcc_unused const struct command *cmd)
+		  gcc_unused const struct command *cmd) noexcept
 {
 #ifdef ENABLE_SQLITE
 	if (StringIsEqual(cmd->cmd, "sticker"))
@@ -235,7 +236,7 @@ command_available(gcc_unused const Partition &partition,
 
 static CommandResult
 PrintAvailableCommands(Response &r, const Partition &partition,
-		     unsigned permission)
+		     unsigned permission) noexcept
 {
 	for (unsigned i = 0; i < num_commands; ++i) {
 		const struct command *cmd = &commands[i];
@@ -249,7 +250,7 @@ PrintAvailableCommands(Response &r, const Partition &partition,
 }
 
 static CommandResult
-PrintUnavailableCommands(Response &r, unsigned permission)
+PrintUnavailableCommands(Response &r, unsigned permission) noexcept
 {
 	for (unsigned i = 0; i < num_commands; ++i) {
 		const struct command *cmd = &commands[i];
@@ -276,7 +277,7 @@ handle_not_commands(Client &client, gcc_unused Request request, Response &r)
 }
 
 void
-command_init()
+command_init() noexcept
 {
 #ifndef NDEBUG
 	/* ensure that the command list is sorted */
@@ -285,8 +286,9 @@ command_init()
 #endif
 }
 
+gcc_pure
 static const struct command *
-command_lookup(const char *name)
+command_lookup(const char *name) noexcept
 {
 	unsigned a = 0, b = num_commands, i;
 
@@ -308,7 +310,7 @@ command_lookup(const char *name)
 
 static bool
 command_check_request(const struct command *cmd, Response &r,
-		      unsigned permission, Request args)
+		      unsigned permission, Request args) noexcept
 {
 	if (cmd->permission != (permission & cmd->permission)) {
 		r.FormatError(ACK_ERROR_PERMISSION,
@@ -342,7 +344,7 @@ command_check_request(const struct command *cmd, Response &r,
 
 static const struct command *
 command_checked_lookup(Response &r, unsigned permission,
-		       const char *cmd_name, Request args)
+		       const char *cmd_name, Request args) noexcept
 {
 	const struct command *cmd = command_lookup(cmd_name);
 	if (cmd == nullptr) {
@@ -360,8 +362,8 @@ command_checked_lookup(Response &r, unsigned permission,
 }
 
 CommandResult
-command_process(Client &client, unsigned num, char *line)
-try {
+command_process(Client &client, unsigned num, char *line) noexcept
+{
 	Response r(client, num);
 
 	/* get the command name (first word on the line) */
@@ -389,34 +391,33 @@ try {
 	char *argv[COMMAND_ARGV_MAX];
 	Request args(argv, 0);
 
-	/* now parse the arguments (quoted or unquoted) */
+	try {
+		/* now parse the arguments (quoted or unquoted) */
 
-	while (true) {
-		if (args.size == COMMAND_ARGV_MAX) {
-			r.Error(ACK_ERROR_ARG, "Too many arguments");
-			return CommandResult::ERROR;
+		while (true) {
+			if (args.size == COMMAND_ARGV_MAX) {
+				r.Error(ACK_ERROR_ARG, "Too many arguments");
+				return CommandResult::ERROR;
+			}
+
+			char *a = tokenizer.NextParam();
+			if (a == nullptr)
+				break;
+
+			argv[args.size++] = a;
 		}
 
-		char *a = tokenizer.NextParam();
-		if (a == nullptr)
-			break;
+		/* look up and invoke the command handler */
 
-		argv[args.size++] = a;
+		const struct command *cmd =
+			command_checked_lookup(r, client.GetPermission(),
+					       cmd_name, args);
+		if (cmd == nullptr)
+			return CommandResult::ERROR;
+
+		return cmd->handler(client, args, r);
+	} catch (...) {
+		PrintError(r, std::current_exception());
+		return CommandResult::ERROR;
 	}
-
-	/* look up and invoke the command handler */
-
-	const struct command *cmd =
-		command_checked_lookup(r, client.GetPermission(),
-				       cmd_name, args);
-
-	CommandResult ret = cmd
-		? cmd->handler(client, args, r)
-		: CommandResult::ERROR;
-
-	return ret;
-} catch (const std::exception &e) {
-	Response r(client, num);
-	PrintError(r, std::current_exception());
-	return CommandResult::ERROR;
 }

src/command/AllCommands.hxx

@@ -25,12 +25,9 @@
 class Client;
 
 void
-command_init();
-
-void
-command_finish();
+command_init() noexcept;
 
 CommandResult
-command_process(Client &client, unsigned num, char *line);
+command_process(Client &client, unsigned num, char *line) noexcept;
 
 #endif

src/command/DatabaseCommands.cxx

@@ -266,7 +266,7 @@ handle_list(Client &client, Request args, Response &r)
 	}
 
 	std::unique_ptr<SongFilter> filter;
-	TagType group = TAG_NUM_OF_ITEM_TYPES;
+	std::vector<TagType> tag_types;
 
 	if (args.size == 1 &&
 	    /* parantheses are the syntax for filter expressions: no
@@ -284,20 +284,31 @@ handle_list(Client &client, Request args, Response &r)
 					    args.shift()));
 	}
 
-	if  (args.size >= 2 &&
-	     StringIsEqual(args[args.size - 2], "group")) {
+	while (args.size >= 2 &&
+	       StringIsEqual(args[args.size - 2], "group")) {
 		const char *s = args[args.size - 1];
-		group = tag_name_parse_i(s);
+		const auto group = tag_name_parse_i(s);
 		if (group == TAG_NUM_OF_ITEM_TYPES) {
 			r.FormatError(ACK_ERROR_ARG,
 				      "Unknown tag type: %s", s);
 			return CommandResult::ERROR;
 		}
 
+		if (group == tagType ||
+		    std::find(tag_types.begin(), tag_types.end(),
+			      group) != tag_types.end()) {
+			r.Error(ACK_ERROR_ARG, "Conflicting group");
+			return CommandResult::ERROR;
+		}
+
+		tag_types.emplace_back(group);
+
 		args.pop_back();
 		args.pop_back();
 	}
 
+	tag_types.emplace_back(tagType);
+
 	if (!args.empty()) {
 		filter.reset(new SongFilter());
 		try {
@@ -310,13 +321,9 @@ handle_list(Client &client, Request args, Response &r)
 		filter->Optimize();
 	}
 
-	if (tagType < TAG_NUM_OF_ITEM_TYPES && tagType == group) {
-		r.Error(ACK_ERROR_ARG, "Conflicting group");
-		return CommandResult::ERROR;
-	}
-
 	PrintUniqueTags(r, client.GetPartition(),
-			tagType, group, filter.get());
+			{&tag_types.front(), tag_types.size()},
+			filter.get());
 	return CommandResult::OK;
 }
 

src/command/FileCommands.cxx

@@ -50,9 +50,7 @@ gcc_pure
 static bool
 SkipNameFS(PathTraitsFS::const_pointer_type name_fs) noexcept
 {
-	return name_fs[0] == '.' &&
-		(name_fs[1] == 0 ||
-		 (name_fs[1] == '.' && name_fs[2] == 0));
+	return PathTraitsFS::IsSpecialFilename(name_fs);
 }
 
 gcc_pure

src/command/OtherCommands.cxx

@@ -35,7 +35,7 @@
 #include "decoder/DecoderPrint.hxx"
 #include "ls.hxx"
 #include "mixer/Volume.hxx"
-#include "util/ChronoUtil.hxx"
+#include "time/ChronoUtil.hxx"
 #include "util/UriUtil.hxx"
 #include "util/StringAPI.hxx"
 #include "fs/AllocatedPath.hxx"

src/command/PlayerCommands.cxx

@@ -34,13 +34,12 @@
 #include "util/StringBuffer.hxx"
 #include "util/ScopeExit.hxx"
 #include "util/Exception.hxx"
+#include "util/Math.hxx"
 
 #ifdef ENABLE_DATABASE
 #include "db/update/Service.hxx"
 #endif
 
-#include <cmath>
-
 #define COMMAND_STATUS_STATE            "state"
 #define COMMAND_STATUS_REPEAT           "repeat"
 #define COMMAND_STATUS_SINGLE           "single"
@@ -149,12 +148,12 @@ handle_status(Client &client, gcc_unused Request args, Response &r)
 		 playlist.GetConsume(),
 		 (unsigned long)playlist.GetVersion(),
 		 playlist.GetLength(),
-		 pc.GetMixRampDb(),
+		 (double)pc.GetMixRampDb(),
 		 state);
 
 	if (pc.GetCrossFade() > FloatDuration::zero())
 		r.Format(COMMAND_STATUS_CROSSFADE ": %lu\n",
-			 std::lround(pc.GetCrossFade().count()));
+			 lround(pc.GetCrossFade().count()));
 
 	if (pc.GetMixRampDelay() > FloatDuration::zero())
 		r.Format(COMMAND_STATUS_MIXRAMPDELAY ": %f\n",
@@ -173,7 +172,7 @@ handle_status(Client &client, gcc_unused Request args, Response &r)
 			 COMMAND_STATUS_BITRATE ": %u\n",
 			 player_status.elapsed_time.RoundS(),
 			 player_status.total_time.IsNegative()
-			 ? 0u
+			 ? 0U
 			 : unsigned(player_status.total_time.RoundS()),
 			 player_status.elapsed_time.ToDoubleS(),
 			 player_status.bit_rate);

src/command/PlaylistCommands.cxx

@@ -37,9 +37,9 @@
 #include "client/Response.hxx"
 #include "Mapper.hxx"
 #include "fs/AllocatedPath.hxx"
+#include "time/ChronoUtil.hxx"
 #include "util/UriUtil.hxx"
 #include "util/ConstBuffer.hxx"
-#include "util/ChronoUtil.hxx"
 #include "LocateUri.hxx"
 
 bool

src/command/StorageCommands.cxx

@@ -23,8 +23,8 @@
 #include "StorageCommands.hxx"
 #include "Request.hxx"
 #include "CommandError.hxx"
+#include "time/ChronoUtil.hxx"
 #include "util/UriUtil.hxx"
-#include "util/ChronoUtil.hxx"
 #include "util/ConstBuffer.hxx"
 #include "fs/Traits.hxx"
 #include "client/Client.hxx"
@@ -198,6 +198,16 @@ handle_mount(Client &client, Request args, Response &r)
 		return CommandResult::ERROR;
 	}
 
+	if (composite.IsMountPoint(local_uri)) {
+		r.Error(ACK_ERROR_ARG, "Mount point busy");
+		return CommandResult::ERROR;
+	}
+
+	if (composite.IsMounted(remote_uri)) {
+		r.Error(ACK_ERROR_ARG, "This storage is already mounted");
+		return CommandResult::ERROR;
+	}
+
 	auto &event_loop = instance.io_thread.GetEventLoop();
 	auto storage = CreateStorageURI(event_loop, remote_uri);
 	if (storage == nullptr) {
@@ -210,8 +220,10 @@ handle_mount(Client &client, Request args, Response &r)
 
 #ifdef ENABLE_DATABASE
 	if (auto *db = dynamic_cast<SimpleDatabase *>(instance.GetDatabase())) {
+		bool need_update;
+
 		try {
-			db->Mount(local_uri, remote_uri);
+			need_update = !db->Mount(local_uri, remote_uri);
 		} catch (...) {
 			composite.Unmount(local_uri);
 			throw;
@@ -220,6 +232,12 @@ handle_mount(Client &client, Request args, Response &r)
 		// TODO: call Instance::OnDatabaseModified()?
 		// TODO: trigger database update?
 		instance.EmitIdle(IDLE_DATABASE);
+
+		if (need_update) {
+			UpdateService *update = client.GetInstance().update;
+			if (update != nullptr)
+				update->Enqueue(local_uri, false);
+		}
 	}
 #endif
 

src/config/File.cxx

@@ -153,11 +153,9 @@ ReadConfigParam(ConfigData &config_data, BufferedReader &reader,
 			      name, reader.GetLineNumber());
 
 	if (!option.repeatable)
-		if (const auto *param = config_data.GetParam(o))
-			throw FormatRuntimeError("config parameter \"%s\" is first defined "
-						 "on line %d and redefined on line %u\n",
-						 name, param->line,
-						 reader.GetLineNumber());
+		/* if the option is not repeatable, override the old
+		   value by removing it first */
+		config_data.GetParamList(o).clear();
 
 	/* now parse the block or the value */
 

src/db/DatabasePrint.cxx

@@ -1,5 +1,5 @@
 /*
- * Copyright 2003-2018 The Music Player Daemon Project
+ * Copyright 2003-2019 The Music Player Daemon Project
  * http://www.musicpd.org
  *
  * This program is free software; you can redistribute it and/or modify
@@ -34,7 +34,8 @@
 #include "PlaylistInfo.hxx"
 #include "Interface.hxx"
 #include "fs/Traits.hxx"
-#include "util/ChronoUtil.hxx"
+#include "time/ChronoUtil.hxx"
+#include "util/RecursiveMap.hxx"
 
 #include <functional>
 
@@ -186,42 +187,29 @@ PrintSongUris(Response &r, Partition &partition,
 }
 
 static void
-PrintUniqueTags(Response &r, TagType tag_type,
-		const std::set<std::string> &values)
+PrintUniqueTags(Response &r, ConstBuffer<TagType> tag_types,
+		const RecursiveMap<std::string> &map) noexcept
 {
-	const char *const name = tag_item_names[tag_type];
-	for (const auto &i : values)
-		r.Format("%s: %s\n", name, i.c_str());
-}
+	const char *const name = tag_item_names[tag_types.front()];
+	tag_types.pop_front();
 
-static void
-PrintGroupedUniqueTags(Response &r, TagType tag_type, TagType group,
-		       const std::map<std::string, std::set<std::string>> &groups)
-{
-	if (group == TAG_NUM_OF_ITEM_TYPES) {
-		for (const auto &i : groups)
-			PrintUniqueTags(r, tag_type, i.second);
-		return;
-	}
+	for (const auto &i : map) {
+		r.Format("%s: %s\n", name, i.first.c_str());
 
-	const char *const group_name = tag_item_names[group];
-	for (const auto &i : groups) {
-		r.Format("%s: %s\n", group_name, i.first.c_str());
-		PrintUniqueTags(r, tag_type, i.second);
+		if (!tag_types.empty())
+			PrintUniqueTags(r, tag_types, i.second);
 	}
 }
 
 void
 PrintUniqueTags(Response &r, Partition &partition,
-		TagType type, TagType group,
+		ConstBuffer<TagType> tag_types,
 		const SongFilter *filter)
 {
-	assert(type < TAG_NUM_OF_ITEM_TYPES);
-
 	const Database &db = partition.GetDatabaseOrThrow();
 
 	const DatabaseSelection selection("", true, filter);
 
-	PrintGroupedUniqueTags(r, type, group,
-			       db.CollectUniqueTags(selection, type, group));
+	PrintUniqueTags(r, tag_types,
+			db.CollectUniqueTags(selection, tag_types));
 }

src/db/DatabasePrint.hxx

@@ -1,5 +1,5 @@
 /*
- * Copyright 2003-2018 The Music Player Daemon Project
+ * Copyright 2003-2019 The Music Player Daemon Project
  * http://www.musicpd.org
  *
  * This program is free software; you can redistribute it and/or modify
@@ -22,6 +22,7 @@
 
 #include <stdint.h>
 
+template<typename T> struct ConstBuffer;
 enum TagType : uint8_t;
 class TagMask;
 class SongFilter;
@@ -45,7 +46,7 @@ PrintSongUris(Response &r, Partition &partition,
 
 void
 PrintUniqueTags(Response &r, Partition &partition,
-		TagType type, TagType group,
+		ConstBuffer<TagType> tag_types,
 		const SongFilter *filter);
 
 #endif

src/db/Interface.hxx

@@ -1,5 +1,5 @@
 /*
- * Copyright 2003-2018 The Music Player Daemon Project
+ * Copyright 2003-2019 The Music Player Daemon Project
  * http://www.musicpd.org
  *
  * This program is free software; you can redistribute it and/or modify
@@ -25,15 +25,14 @@
 #include "util/Compiler.h"
 
 #include <chrono>
-#include <map>
-#include <set>
 #include <string>
 
 struct DatabasePlugin;
 struct DatabaseStats;
 struct DatabaseSelection;
 struct LightSong;
-class TagMask;
+template<typename Key> class RecursiveMap;
+template<typename T> struct ConstBuffer;
 
 class Database {
 	const DatabasePlugin &plugin;
@@ -106,13 +105,14 @@ public:
 	}
 
 	/**
-	 * Collect unique values of the given tag type.
+	 * Collect unique values of the given tag types.  Each item in
+	 * the #tag_types parameter results in one nesting level in
+	 * the return value.
 	 *
 	 * Throws on error.
 	 */
-	virtual std::map<std::string, std::set<std::string>> CollectUniqueTags(const DatabaseSelection &selection,
-									       TagType tag_type,
-									       TagType group=TAG_NUM_OF_ITEM_TYPES) const = 0;
+	virtual RecursiveMap<std::string> CollectUniqueTags(const DatabaseSelection &selection,
+							    ConstBuffer<TagType> tag_types) const = 0;
 
 	/**
 	 * Throws on error.

src/db/UniqueTags.cxx

@@ -1,5 +1,5 @@
 /*
- * Copyright 2003-2018 The Music Player Daemon Project
+ * Copyright 2003-2019 The Music Player Daemon Project
  * http://www.musicpd.org
  *
  * This program is free software; you can redistribute it and/or modify
@@ -21,36 +21,32 @@
 #include "Interface.hxx"
 #include "song/LightSong.hxx"
 #include "tag/VisitFallback.hxx"
+#include "util/ConstBuffer.hxx"
+#include "util/RecursiveMap.hxx"
 
 static void
-CollectTags(std::set<std::string> &result,
-	    const Tag &tag,
-	    TagType tag_type) noexcept
+CollectUniqueTags(RecursiveMap<std::string> &result,
+		  const Tag &tag,
+		  ConstBuffer<TagType> tag_types) noexcept
 {
-	VisitTagWithFallbackOrEmpty(tag, tag_type, [&result](const char *value){
-			result.emplace(value);
+	if (tag_types.empty())
+		return;
+
+	const auto tag_type = tag_types.shift();
+
+	VisitTagWithFallbackOrEmpty(tag, tag_type, [&result, &tag, tag_types](const char *value){
+			CollectUniqueTags(result[value], tag, tag_types);
 		});
 }
 
-static void
-CollectGroupTags(std::map<std::string, std::set<std::string>> &result,
-		 const Tag &tag,
-		 TagType tag_type,
-		 TagType group) noexcept
-{
-	VisitTagWithFallbackOrEmpty(tag, group, [&](const char *group_name){
-			CollectTags(result[group_name], tag, tag_type);
-		});
-}
-
-std::map<std::string, std::set<std::string>>
+RecursiveMap<std::string>
 CollectUniqueTags(const Database &db, const DatabaseSelection &selection,
-		  TagType tag_type, TagType group)
+		  ConstBuffer<TagType> tag_types)
 {
-	std::map<std::string, std::set<std::string>> result;
+	RecursiveMap<std::string> result;
 
-	db.Visit(selection, [&result, tag_type, group](const LightSong &song){
-			CollectGroupTags(result, song.tag, tag_type, group);
+	db.Visit(selection, [&result, tag_types](const LightSong &song){
+			CollectUniqueTags(result, song.tag, tag_types);
 		});
 
 	return result;

src/db/UniqueTags.hxx

@@ -1,5 +1,5 @@
 /*
- * Copyright 2003-2018 The Music Player Daemon Project
+ * Copyright 2003-2019 The Music Player Daemon Project
  * http://www.musicpd.org
  *
  * This program is free software; you can redistribute it and/or modify
@@ -29,9 +29,11 @@
 class TagMask;
 class Database;
 struct DatabaseSelection;
+template<typename Key> class RecursiveMap;
+template<typename T> struct ConstBuffer;
 
-std::map<std::string, std::set<std::string>>
+RecursiveMap<std::string>
 CollectUniqueTags(const Database &db, const DatabaseSelection &selection,
-		  TagType tag_type, TagType group);
+		  ConstBuffer<TagType> tag_types);
 
 #endif

src/db/plugins/ProxyDatabasePlugin.cxx

@@ -38,6 +38,8 @@
 #include "tag/Tag.hxx"
 #include "tag/Mask.hxx"
 #include "tag/ParseName.hxx"
+#include "util/ConstBuffer.hxx"
+#include "util/RecursiveMap.hxx"
 #include "util/ScopeExit.hxx"
 #include "util/RuntimeError.hxx"
 #include "protocol/Ack.hxx"
@@ -127,9 +129,8 @@ public:
 		   VisitSong visit_song,
 		   VisitPlaylist visit_playlist) const override;
 
-	std::map<std::string, std::set<std::string>> CollectUniqueTags(const DatabaseSelection &selection,
-								       TagType tag_type,
-								       TagType group) const override;
+	RecursiveMap<std::string> CollectUniqueTags(const DatabaseSelection &selection,
+						    ConstBuffer<TagType> tag_types) const override;
 
 	DatabaseStats GetStats(const DatabaseSelection &selection) const override;
 
@@ -412,8 +413,7 @@ SendConstraints(mpd_connection *connection, const DatabaseSelection &selection)
 static bool
 SendGroup(mpd_connection *connection, TagType group)
 {
-	if (group == TAG_NUM_OF_ITEM_TYPES)
-		return true;
+	assert(group != TAG_NUM_OF_ITEM_TYPES);
 
 #if LIBMPDCLIENT_CHECK_VERSION(2,12,0)
 	const auto tag = Convert(group);
@@ -428,6 +428,19 @@ SendGroup(mpd_connection *connection, TagType group)
 #endif
 }
 
+static bool
+SendGroup(mpd_connection *connection, ConstBuffer<TagType> group)
+{
+	while (!group.empty()) {
+		if (!SendGroup(connection, group.back()))
+		    return false;
+
+		group.pop_back();
+	}
+
+	return true;
+}
+
 ProxyDatabase::ProxyDatabase(EventLoop &_loop, DatabaseListener &_listener,
 			     const ConfigBlock &block)
 	:Database(proxy_db_plugin),
@@ -435,7 +448,7 @@ ProxyDatabase::ProxyDatabase(EventLoop &_loop, DatabaseListener &_listener,
 	 listener(_listener),
 	 host(block.GetBlockValue("host", "")),
 	 password(block.GetBlockValue("password", "")),
-	 port(block.GetBlockValue("port", 0u)),
+	 port(block.GetBlockValue("port", 0U)),
 	 keepalive(block.GetBlockValue("keepalive", false))
 {
 }
@@ -480,9 +493,13 @@ ProxyDatabase::Connect()
 	try {
 		CheckError(connection);
 
-		if (mpd_connection_cmp_server_version(connection, 0, 19, 0) < 0)
-			throw FormatRuntimeError("Connect to MPD %s, but this plugin requires at least version 0.19",
-						 mpd_connection_get_server_version(connection));
+		if (mpd_connection_cmp_server_version(connection, 0, 19, 0) < 0) {
+			const unsigned *version =
+				mpd_connection_get_server_version(connection);
+			throw FormatRuntimeError("Connect to MPD %u.%u.%u, but this "
+						 "plugin requires at least version 0.19",
+						 version[0], version[1], version[2]);
+		}
 
 		if (!password.empty() &&
 		    !mpd_run_password(connection, password.c_str()))
@@ -504,7 +521,7 @@ ProxyDatabase::Connect()
 	(void)keepalive;
 #endif
 
-	idle_received = ~0u;
+	idle_received = ~0U;
 	is_idle = false;
 
 	SocketMonitor::Open(SocketDescriptor(mpd_async_get_fd(mpd_connection_get_async(connection))));
@@ -983,17 +1000,20 @@ ProxyDatabase::Visit(const DatabaseSelection &selection,
 	helper.Commit();
 }
 
-std::map<std::string, std::set<std::string>>
+RecursiveMap<std::string>
 ProxyDatabase::CollectUniqueTags(const DatabaseSelection &selection,
-				 TagType tag_type, TagType group) const
+				 ConstBuffer<TagType> tag_types) const
 try {
 	// TODO: eliminate the const_cast
 	const_cast<ProxyDatabase *>(this)->EnsureConnected();
 
-	enum mpd_tag_type tag_type2 = Convert(tag_type);
+	enum mpd_tag_type tag_type2 = Convert(tag_types.back());
 	if (tag_type2 == MPD_TAG_COUNT)
 		throw std::runtime_error("Unsupported tag");
 
+	auto group = tag_types;
+	group.pop_back();
+
 	if (!mpd_search_db_tags(connection, tag_type2) ||
 	    !SendConstraints(connection, selection) ||
 	    !SendGroup(connection, group))
@@ -1002,44 +1022,33 @@ try {
 	if (!mpd_search_commit(connection))
 		ThrowError(connection);
 
-	std::map<std::string, std::set<std::string>> result;
+	RecursiveMap<std::string> result;
+	std::vector<RecursiveMap<std::string> *> position;
+	position.emplace_back(&result);
 
-	if (group == TAG_NUM_OF_ITEM_TYPES) {
-		auto &values = result[std::string()];
+	while (auto *pair = mpd_recv_pair(connection)) {
+		AtScopeExit(this, pair) {
+			mpd_return_pair(connection, pair);
+		};
 
-		while (auto *pair = mpd_recv_pair(connection)) {
-			AtScopeExit(this, pair) {
-				mpd_return_pair(connection, pair);
-			};
+		const auto current_type = tag_name_parse_i(pair->name);
+		if (current_type == TAG_NUM_OF_ITEM_TYPES)
+			continue;
 
-			const auto current_type = tag_name_parse_i(pair->name);
-			if (current_type == TAG_NUM_OF_ITEM_TYPES)
-				continue;
+		auto it = std::find(tag_types.begin(), tag_types.end(),
+				    current_type);
+		if (it == tag_types.end())
+			continue;
 
-			if (current_type == tag_type)
-				values.emplace(pair->value);
-		}
-	} else {
-		std::set<std::string> *current_group = nullptr;
+		size_t i = std::distance(tag_types.begin(), it);
+		if (i > position.size())
+			continue;
 
-		while (auto *pair = mpd_recv_pair(connection)) {
-			AtScopeExit(this, pair) {
-				mpd_return_pair(connection, pair);
-			};
+		if (i + 1 < position.size())
+			position.resize(i + 1);
 
-			const auto current_type = tag_name_parse_i(pair->name);
-			if (current_type == TAG_NUM_OF_ITEM_TYPES)
-				continue;
-
-			if (current_type == tag_type) {
-				if (current_group == nullptr)
-					current_group = &result[std::string()];
-
-				current_group->emplace(pair->value);
-			} else if (current_type == group) {
-				current_group = &result[pair->value];
-			}
-		}
+		auto &parent = *position[i];
+		position.emplace_back(&parent[pair->value]);
 	}
 
 	if (!mpd_response_finish(connection))

src/db/plugins/simple/Directory.cxx

@@ -32,6 +32,7 @@
 #include "fs/Traits.hxx"
 #include "util/Alloc.hxx"
 #include "util/DeleteDisposer.hxx"
+#include "util/StringCompare.hxx"
 
 #include <assert.h>
 #include <string.h>
@@ -69,7 +70,15 @@ Directory::GetName() const noexcept
 {
 	assert(!IsRoot());
 
-	return PathTraitsUTF8::GetBase(path.c_str());
+	if (parent->IsRoot())
+		return path.c_str();
+
+	assert(StringAfterPrefix(path.c_str(), parent->path.c_str()) != nullptr);
+	assert(*StringAfterPrefix(path.c_str(), parent->path.c_str()) == PathTraitsUTF8::SEPARATOR);
+
+	/* strip the parent directory path and the slash separator
+	   from this directory's path, and the base name remains */
+	return path.c_str() + parent->path.length() + 1;
 }
 
 Directory *

src/db/plugins/simple/DirectorySave.cxx

@@ -25,7 +25,7 @@
 #include "PlaylistDatabase.hxx"
 #include "fs/io/TextFile.hxx"
 #include "fs/io/BufferedOutputStream.hxx"
-#include "util/ChronoUtil.hxx"
+#include "time/ChronoUtil.hxx"
 #include "util/StringCompare.hxx"
 #include "util/NumberParser.hxx"
 #include "util/RuntimeError.hxx"

src/db/plugins/simple/SimpleDatabasePlugin.cxx

@@ -42,6 +42,8 @@
 #include "fs/FileSystem.hxx"
 #include "util/CharUtil.hxx"
 #include "util/Domain.hxx"
+#include "util/ConstBuffer.hxx"
+#include "util/RecursiveMap.hxx"
 #include "Log.hxx"
 
 #ifdef ENABLE_ZLIB
@@ -329,11 +331,11 @@ SimpleDatabase::Visit(const DatabaseSelection &selection,
 			    "No such directory");
 }
 
-std::map<std::string, std::set<std::string>>
+RecursiveMap<std::string>
 SimpleDatabase::CollectUniqueTags(const DatabaseSelection &selection,
-				  TagType tag_type, TagType group) const
+				  ConstBuffer<TagType> tag_types) const
 {
-	return ::CollectUniqueTags(*this, selection, tag_type, group);
+	return ::CollectUniqueTags(*this, selection, tag_types);
 }
 
 DatabaseStats
@@ -426,7 +428,7 @@ IsUnsafeChar(char ch)
 	return !IsSafeChar(ch);
 }
 
-void
+bool
 SimpleDatabase::Mount(const char *local_uri, const char *storage_uri)
 {
 	if (cache_path.IsNull())
@@ -445,14 +447,11 @@ SimpleDatabase::Mount(const char *local_uri, const char *storage_uri)
 						   compress);
 	db->Open();
 
-	// TODO: update the new database instance?
+	bool exists = db->FileExists();
 
-	try {
-		Mount(local_uri, std::move(db));
-	} catch (...) {
-		db->Close();
-		throw;
-	}
+	Mount(local_uri, std::move(db));
+
+	return exists;
 }
 
 inline DatabasePtr

src/db/plugins/simple/SimpleDatabasePlugin.hxx

@@ -103,9 +103,11 @@ public:
 
 	/**
 	 * Throws #std::runtime_error on error.
+	 *
+	 * @return false if the mounted database needs to be updated
 	 */
 	gcc_nonnull_all
-	void Mount(const char *local_uri, const char *storage_uri);
+	bool Mount(const char *local_uri, const char *storage_uri);
 
 	gcc_nonnull_all
 	bool Unmount(const char *uri) noexcept;
@@ -122,9 +124,8 @@ public:
 		   VisitSong visit_song,
 		   VisitPlaylist visit_playlist) const override;
 
-	std::map<std::string, std::set<std::string>> CollectUniqueTags(const DatabaseSelection &selection,
-								       TagType tag_type,
-								       TagType group) const override;
+	RecursiveMap<std::string> CollectUniqueTags(const DatabaseSelection &selection,
+						    ConstBuffer<TagType> tag_types) const override;
 
 	DatabaseStats GetStats(const DatabaseSelection &selection) const override;
 

src/db/plugins/upnp/ContentDirectoryService.cxx

@@ -65,7 +65,7 @@ ContentDirectoryService::readDirSlice(UpnpClient_Handle hdl,
 
 	IXML_Document *response;
 	int code = UpnpSendAction(hdl, m_actionURL.c_str(), m_serviceType.c_str(),
-				  0 /*devUDN*/, request, &response);
+				  nullptr /*devUDN*/, request, &response);
 	if (code != UPNP_E_SUCCESS)
 		throw FormatRuntimeError("UpnpSendAction() failed: %s",
 					 UpnpGetErrorMessage(code));
@@ -124,7 +124,7 @@ ContentDirectoryService::search(UpnpClient_Handle hdl,
 		IXML_Document *_response;
 		auto code = UpnpSendAction(hdl, m_actionURL.c_str(),
 					   m_serviceType.c_str(),
-					   0 /*devUDN*/,
+					   nullptr /*devUDN*/,
 					   request.get(), &_response);
 		if (code != UPNP_E_SUCCESS)
 			throw FormatRuntimeError("UpnpSendAction() failed: %s",
@@ -170,7 +170,7 @@ ContentDirectoryService::getMetadata(UpnpClient_Handle hdl,
 	IXML_Document *_response;
 	auto code = UpnpSendAction(hdl, m_actionURL.c_str(),
 				   m_serviceType.c_str(),
-				   0 /*devUDN*/, request.get(), &_response);
+				   nullptr /*devUDN*/, request.get(), &_response);
 	if (code != UPNP_E_SUCCESS)
 		throw FormatRuntimeError("UpnpSendAction() failed: %s",
 					 UpnpGetErrorMessage(code));

src/db/plugins/upnp/Object.hxx

@@ -89,9 +89,18 @@ public:
 		tag.Clear();
 	}
 
+	gcc_pure
+	bool IsRoot() const noexcept {
+		return type == Type::CONTAINER && id == "0";
+	}
+
 	gcc_pure
 	bool Check() const noexcept {
-		return !id.empty() && !parent_id.empty() && !name.empty() &&
+		return !id.empty() &&
+			/* root nodes don't need a parent id and a
+			   name */
+			(IsRoot() || (!parent_id.empty() &&
+				      !name.empty())) &&
 			(type != UPnPDirObject::Type::ITEM ||
 			 item_class != UPnPDirObject::ItemClass::UNKNOWN);
 	}

src/db/plugins/upnp/UpnpDatabasePlugin.cxx

@@ -40,10 +40,11 @@
 #include "tag/Mask.hxx"
 #include "fs/Traits.hxx"
 #include "Log.hxx"
+#include "util/ConstBuffer.hxx"
+#include "util/RecursiveMap.hxx"
 #include "util/SplitString.hxx"
 
 #include <string>
-#include <set>
 
 #include <assert.h>
 #include <string.h>
@@ -97,9 +98,8 @@ public:
 		   VisitSong visit_song,
 		   VisitPlaylist visit_playlist) const override;
 
-	std::map<std::string, std::set<std::string>> CollectUniqueTags(const DatabaseSelection &selection,
-								       TagType tag_type,
-								       TagType group) const override;
+	RecursiveMap<std::string> CollectUniqueTags(const DatabaseSelection &selection,
+						    ConstBuffer<TagType> tag_types) const override;
 
 	DatabaseStats GetStats(const DatabaseSelection &selection) const override;
 
@@ -624,11 +624,11 @@ UpnpDatabase::Visit(const DatabaseSelection &selection,
 	helper.Commit();
 }
 
-std::map<std::string, std::set<std::string>>
+RecursiveMap<std::string>
 UpnpDatabase::CollectUniqueTags(const DatabaseSelection &selection,
-				TagType tag, TagType group) const
+				ConstBuffer<TagType> tag_types) const
 {
-	return ::CollectUniqueTags(*this, selection, tag, group);
+	return ::CollectUniqueTags(*this, selection, tag_types);
 }
 
 DatabaseStats

src/db/update/InotifyQueue.cxx

@@ -79,7 +79,7 @@ path_in(const char *path, const char *possible_parent) noexcept
 }
 
 void
-InotifyQueue::Enqueue(const char *uri_utf8)
+InotifyQueue::Enqueue(const char *uri_utf8) noexcept
 {
 	delay_event.Schedule(INOTIFY_UPDATE_DELAY);
 

src/db/update/InotifyQueue.hxx

@@ -35,11 +35,11 @@ class InotifyQueue final {
 	TimerEvent delay_event;
 
 public:
-	InotifyQueue(EventLoop &_loop, UpdateService &_update)
+	InotifyQueue(EventLoop &_loop, UpdateService &_update) noexcept
 		:update(_update),
 		 delay_event(_loop, BIND_THIS_METHOD(OnDelay)) {}
 
-	void Enqueue(const char *uri_utf8);
+	void Enqueue(const char *uri_utf8) noexcept;
 
 private:
 	void OnDelay() noexcept;

src/db/update/InotifySource.cxx

@@ -24,11 +24,11 @@
 #include "system/Error.hxx"
 #include "Log.hxx"
 
+#include <cerrno>
+#include <climits>
+#include <cstdint>
+
 #include <sys/inotify.h>
-#include <unistd.h>
-#include <errno.h>
-#include <stdint.h>
-#include <limits.h>
 
 bool
 InotifySource::OnSocketReady(gcc_unused unsigned flags) noexcept
@@ -48,7 +48,7 @@ InotifySource::OnSocketReady(gcc_unused unsigned flags) noexcept
 
 	while (true) {
 		const size_t remaining = end - p;
-		const struct inotify_event *event =
+		const auto *event =
 			(const struct inotify_event *)p;
 		if (remaining < sizeof(*event) ||
 		    remaining < sizeof(*event) + event->len)
@@ -98,7 +98,7 @@ InotifySource::Add(const char *path_fs, unsigned mask)
 }
 
 void
-InotifySource::Remove(unsigned wd)
+InotifySource::Remove(unsigned wd) noexcept
 {
 	auto ifd = GetSocket().ToFileDescriptor();
 	int ret = inotify_rm_watch(ifd.Get(), wd);

src/db/update/InotifySource.hxx

@@ -21,9 +21,6 @@
 #define MPD_INOTIFY_SOURCE_HXX
 
 #include "event/SocketMonitor.hxx"
-#include "util/Compiler.h"
-
-class FileDescriptor;
 
 typedef void (*mpd_inotify_callback_t)(int wd, unsigned mask,
 				       const char *name, void *ctx);
@@ -45,7 +42,7 @@ public:
 	InotifySource(EventLoop &_loop,
 		      mpd_inotify_callback_t callback, void *ctx);
 
-	~InotifySource() {
+	~InotifySource() noexcept {
 		Close();
 	}
 
@@ -63,7 +60,7 @@ public:
 	 *
 	 * @param wd the watch descriptor returned by mpd_inotify_source_add()
 	 */
-	void Remove(unsigned wd);
+	void Remove(unsigned wd) noexcept;
 
 private:
 	bool OnSocketReady(unsigned flags) noexcept override;

src/db/update/InotifyUpdate.cxx

@@ -21,18 +21,25 @@
 #include "InotifySource.hxx"
 #include "InotifyQueue.hxx"
 #include "InotifyDomain.hxx"
+#include "ExcludeList.hxx"
 #include "storage/StorageInterface.hxx"
+#include "input/InputStream.hxx"
+#include "input/Error.hxx"
 #include "fs/AllocatedPath.hxx"
+#include "fs/DirectoryReader.hxx"
 #include "fs/FileInfo.hxx"
+#include "fs/Traits.hxx"
+#include "thread/Mutex.hxx"
+#include "util/Compiler.h"
 #include "Log.hxx"
 
-#include <string>
-#include <map>
+#include <cassert>
+#include <cstring>
 #include <forward_list>
+#include <map>
+#include <string>
 
-#include <assert.h>
 #include <sys/inotify.h>
-#include <string.h>
 #include <dirent.h>
 
 static constexpr unsigned IN_MASK =
@@ -49,17 +56,28 @@ struct WatchDirectory {
 
 	int descriptor;
 
+	ExcludeList exclude_list;
+
 	std::forward_list<WatchDirectory> children;
 
 	template<typename N>
-	WatchDirectory(WatchDirectory *_parent, N &&_name,
+	WatchDirectory(N &&_name,
 		       int _descriptor)
-		:parent(_parent), name(std::forward<N>(_name)),
+		:parent(nullptr), name(std::forward<N>(_name)),
 		 descriptor(_descriptor) {}
 
+	template<typename N>
+	WatchDirectory(WatchDirectory &_parent, N &&_name,
+		       int _descriptor)
+		:parent(&_parent), name(std::forward<N>(_name)),
+		 descriptor(_descriptor),
+		 exclude_list(_parent.exclude_list) {}
+
 	WatchDirectory(const WatchDirectory &) = delete;
 	WatchDirectory &operator=(const WatchDirectory &) = delete;
 
+	void LoadExcludeList(Path directory_path) noexcept;
+
 	gcc_pure
 	unsigned GetDepth() const noexcept;
 
@@ -67,6 +85,18 @@ struct WatchDirectory {
 	AllocatedPath GetUriFS() const noexcept;
 };
 
+void
+WatchDirectory::LoadExcludeList(Path directory_path) noexcept
+try {
+	Mutex mutex;
+	auto is = InputStream::OpenReady((directory_path / Path::FromFS(".mpdignore")).c_str(),
+					 mutex);
+	exclude_list.Load(std::move(is));
+} catch (...) {
+	if (!IsFileNotFound(std::current_exception()))
+		LogError(std::current_exception());
+}
+
 static InotifySource *inotify_source;
 static InotifyQueue *inotify_queue;
 
@@ -144,21 +174,19 @@ WatchDirectory::GetUriFS() const noexcept
 }
 
 /* we don't look at "." / ".." nor files with newlines in their name */
-static bool skip_path(const char *path)
+gcc_pure
+static bool
+SkipFilename(Path name) noexcept
 {
-	return (path[0] == '.' && path[1] == 0) ||
-		(path[0] == '.' && path[1] == '.' && path[2] == 0) ||
-		strchr(path, '\n') != nullptr;
+	return PathTraitsFS::IsSpecialFilename(name.c_str()) ||
+		name.HasNewline();
 }
 
 static void
-recursive_watch_subdirectories(WatchDirectory *directory,
-			       const AllocatedPath &path_fs, unsigned depth)
-{
-	DIR *dir;
-	struct dirent *ent;
-
-	assert(directory != nullptr);
+recursive_watch_subdirectories(WatchDirectory &parent,
+			       const Path path_fs,
+			       unsigned depth)
+try {
 	assert(depth <= inotify_max_depth);
 	assert(!path_fs.IsNull());
 
@@ -167,20 +195,17 @@ recursive_watch_subdirectories(WatchDirectory *directory,
 	if (depth > inotify_max_depth)
 		return;
 
-	dir = opendir(path_fs.c_str());
-	if (dir == nullptr) {
-		FormatErrno(inotify_domain,
-			    "Failed to open directory %s", path_fs.c_str());
-		return;
-	}
-
-	while ((ent = readdir(dir))) {
+	DirectoryReader dir(path_fs);
+	while (dir.ReadEntry()) {
 		int ret;
 
-		if (skip_path(ent->d_name))
+		const Path name_fs = dir.GetEntry();
+		if (SkipFilename(name_fs))
+			continue;
+
+		if (parent.exclude_list.Check(name_fs))
 			continue;
 
-		const auto name_fs = Path::FromFS(ent->d_name);
 		const auto child_path_fs = path_fs / name_fs;
 
 		FileInfo fi;
@@ -209,17 +234,18 @@ recursive_watch_subdirectories(WatchDirectory *directory,
 			/* already being watched */
 			continue;
 
-		directory->children.emplace_front(directory,
-						  name_fs,
-						  ret);
-		child = &directory->children.front();
+		parent.children.emplace_front(parent,
+					      name_fs,
+					      ret);
+		child = &parent.children.front();
+		child->LoadExcludeList(child_path_fs);
 
 		tree_add_watch_directory(child);
 
-		recursive_watch_subdirectories(child, child_path_fs, depth);
+		recursive_watch_subdirectories(*child, child_path_fs, depth);
 	}
-
-	closedir(dir);
+} catch (...) {
+	LogError(std::current_exception());
 }
 
 gcc_pure
@@ -240,8 +266,6 @@ mpd_inotify_callback(int wd, unsigned mask,
 {
 	WatchDirectory *directory;
 
-	/*FormatDebug(inotify_domain, "wd=%d mask=0x%x name='%s'", wd, mask, name);*/
-
 	directory = tree_find_watch_directory(wd);
 	if (directory == nullptr)
 		return;
@@ -263,7 +287,7 @@ mpd_inotify_callback(int wd, unsigned mask,
 			? root
 			: (root / uri_fs);
 
-		recursive_watch_subdirectories(directory, path_fs,
+		recursive_watch_subdirectories(*directory, path_fs,
 					       directory->GetDepth());
 	}
 
@@ -318,11 +342,12 @@ mpd_inotify_init(EventLoop &loop, Storage &storage, UpdateService &update,
 		return;
 	}
 
-	inotify_root = new WatchDirectory(nullptr, path, descriptor);
+	inotify_root = new WatchDirectory(path, descriptor);
+	inotify_root->LoadExcludeList(path);
 
 	tree_add_watch_directory(inotify_root);
 
-	recursive_watch_subdirectories(inotify_root, path, 0);
+	recursive_watch_subdirectories(*inotify_root, path, 0);
 
 	inotify_queue = new InotifyQueue(loop, update);
 

src/db/update/InotifyUpdate.hxx

@@ -20,8 +20,6 @@
 #ifndef MPD_INOTIFY_UPDATE_HXX
 #define MPD_INOTIFY_UPDATE_HXX
 
-#include "util/Compiler.h"
-
 class EventLoop;
 class Storage;
 class UpdateService;

src/db/update/Service.hxx

@@ -66,7 +66,7 @@ public:
 
 	~UpdateService();
 
-	EventLoop &GetEventLoop() noexcept {
+	auto &GetEventLoop() const noexcept {
 		return defer.GetEventLoop();
 	}
 

src/db/update/Walk.cxx

@@ -237,7 +237,7 @@ try {
 	LogError(std::current_exception());
 }
 
-/* we don't look at "." / ".." nor files with newlines in their name */
+/* we don't look at files with newlines in their name */
 gcc_pure
 static bool
 skip_path(const char *name_utf8) noexcept
@@ -341,8 +341,8 @@ UpdateWalk::UpdateDirectory(Directory &directory,
 
 	try {
 		Mutex mutex;
-		auto is = InputStream::OpenReady(PathTraitsUTF8::Build(storage.MapUTF8(directory.GetPath()).c_str(),
-								       ".mpdignore").c_str(),
+		auto is = InputStream::OpenReady(storage.MapUTF8(PathTraitsUTF8::Build(directory.GetPath(),
+										       ".mpdignore").c_str()).c_str(),
 						 mutex);
 		child_exclude_list.Load(std::move(is));
 	} catch (...) {
@@ -493,6 +493,12 @@ UpdateWalk::Walk(Directory &root, const char *path, bool discard) noexcept
 		if (!GetInfo(storage, "", info))
 			return false;
 
+		if (!info.IsDirectory()) {
+			FormatError(update_domain, "Not a directory: %s",
+				    storage.MapUTF8("").c_str());
+			return false;
+		}
+
 		ExcludeList exclude_list;
 
 		UpdateDirectory(root, exclude_list, info);

src/decoder/Bridge.cxx

@@ -33,9 +33,11 @@
 #include "util/ConstBuffer.hxx"
 #include "util/StringBuffer.hxx"
 
+#include <cmath>
+#include <stdexcept>
+
 #include <assert.h>
 #include <string.h>
-#include <math.h>
 
 DecoderBridge::~DecoderBridge()
 {
@@ -344,6 +346,10 @@ DecoderBridge::SeekError()
 		/* d'oh, we can't seek to the sub-song start position,
 		   what now? - no idea, ignoring the problem for now. */
 		initial_seek_running = false;
+
+		if (initial_seek_essential)
+			error = std::make_exception_ptr(std::runtime_error("Decoder failed to seek"));
+
 		return;
 	}
 
@@ -591,7 +597,7 @@ DecoderBridge::SubmitReplayGain(const ReplayGainInfo *new_replay_gain_info)
 			const auto &tuple = new_replay_gain_info->Get(rgm);
 			const auto scale =
 				tuple.CalculateScale(dc.replay_gain_config);
-			dc.replay_gain_db = 20.0 * log10f(scale);
+			dc.replay_gain_db = 20.0f * std::log10(scale);
 		}
 
 		replay_gain_info = *new_replay_gain_info;

src/decoder/Bridge.hxx

@@ -62,6 +62,11 @@ public:
 	 */
 	bool initial_seek_pending;
 
+	/**
+	 * Are initial seek failures fatal?
+	 */
+	const bool initial_seek_essential;
+
 	/**
 	 * Is the initial seek currently running?  During this time,
 	 * the decoder command is SEEK.  This flag is set by
@@ -107,9 +112,11 @@ public:
 	std::exception_ptr error;
 
 	DecoderBridge(DecoderControl &_dc, bool _initial_seek_pending,
+		      bool _initial_seek_essential,
 		      std::unique_ptr<Tag> _tag)
 		:dc(_dc),
 		 initial_seek_pending(_initial_seek_pending),
+		 initial_seek_essential(_initial_seek_essential),
 		 song_tag(std::move(_tag)) {}
 
 	~DecoderBridge();

src/decoder/Control.cxx

@@ -90,6 +90,7 @@ DecoderControl::IsCurrentSong(const DetachedSong &_song) const noexcept
 void
 DecoderControl::Start(std::unique_ptr<DetachedSong> _song,
 		      SongTime _start_time, SongTime _end_time,
+		      bool _initial_seek_essential,
 		      MusicBuffer &_buffer,
 		      std::shared_ptr<MusicPipe> _pipe) noexcept
 {
@@ -99,6 +100,7 @@ DecoderControl::Start(std::unique_ptr<DetachedSong> _song,
 	song = std::move(_song);
 	start_time = _start_time;
 	end_time = _end_time;
+	initial_seek_essential = _initial_seek_essential;
 	buffer = &_buffer;
 	pipe = std::move(_pipe);
 
@@ -147,6 +149,18 @@ DecoderControl::Seek(SongTime t)
 	seek_error = false;
 	SynchronousCommandLocked(DecoderCommand::SEEK);
 
+	while (state == DecoderState::START)
+		/* If the decoder falls back to DecoderState::START,
+		   this means that our SEEK command arrived too late,
+		   and the decoder had meanwhile finished decoding and
+		   went idle.  Our SEEK command is finished, but that
+		   means only that the decoder thread has launched the
+		   decoder.  To work around illegal states, we wait
+		   until the decoder plugin has become ready.  This is
+		   a kludge, built on top of the "late seek" kludge.
+		   Not exactly elegant, sorry. */
+		WaitForDecoder();
+
 	if (seek_error)
 		throw std::runtime_error("Decoder failed to seek");
 }

src/decoder/Control.hxx

@@ -117,6 +117,12 @@ public:
 
 	bool seek_error;
 	bool seekable;
+
+	/**
+	 * @see #DecoderBridge::initial_seek_essential
+	 */
+	bool initial_seek_essential;
+
 	SongTime seek_time;
 
 private:
@@ -320,6 +326,11 @@ public:
 	gcc_pure
 	bool IsCurrentSong(const DetachedSong &_song) const noexcept;
 
+	gcc_pure
+	bool IsUnseekableCurrentSong(const DetachedSong &_song) const noexcept {
+		return !seekable && IsCurrentSong(_song);
+	}
+
 	gcc_pure
 	bool IsSeekableCurrentSong(const DetachedSong &_song) const noexcept {
 		return seekable && IsCurrentSong(_song);
@@ -393,11 +404,14 @@ public:
 	 * owned and freed by the decoder
 	 * @param start_time see #DecoderControl
 	 * @param end_time see #DecoderControl
+	 * @param initial_seek_essential see
+	 * #DecoderBridge::initial_seek_essential
 	 * @param pipe the pipe which receives the decoded chunks (owned by
 	 * the caller)
 	 */
 	void Start(std::unique_ptr<DetachedSong> song,
 		   SongTime start_time, SongTime end_time,
+		   bool initial_seek_essential,
 		   MusicBuffer &buffer,
 		   std::shared_ptr<MusicPipe> pipe) noexcept;
 

src/decoder/DecoderAPI.cxx

@@ -26,7 +26,7 @@
 size_t
 decoder_read(DecoderClient *client,
 	     InputStream &is,
-	     void *buffer, size_t length)
+	     void *buffer, size_t length) noexcept
 {
 	assert(buffer != nullptr);
 
@@ -42,9 +42,30 @@ decoder_read(DecoderClient *client,
 	}
 }
 
+size_t
+decoder_read_much(DecoderClient *client, InputStream &is,
+		  void *_buffer, size_t size) noexcept
+{
+	uint8_t *buffer = (uint8_t *)_buffer;
+
+	size_t total = 0;
+
+	while (size > 0 && !is.LockIsEOF()) {
+		size_t nbytes = decoder_read(client, is, buffer, size);
+		if (nbytes == 0)
+			return false;
+
+		total += nbytes;
+		buffer += nbytes;
+		size -= nbytes;
+	}
+
+	return total;
+}
+
 bool
 decoder_read_full(DecoderClient *client, InputStream &is,
-		  void *_buffer, size_t size)
+		  void *_buffer, size_t size) noexcept
 {
 	uint8_t *buffer = (uint8_t *)_buffer;
 
@@ -61,7 +82,7 @@ decoder_read_full(DecoderClient *client, InputStream &is,
 }
 
 bool
-decoder_skip(DecoderClient *client, InputStream &is, size_t size)
+decoder_skip(DecoderClient *client, InputStream &is, size_t size) noexcept
 {
 	while (size > 0) {
 		char buffer[1024];

src/decoder/DecoderAPI.hxx

@@ -65,15 +65,27 @@ class StopDecoder {};
  */
 size_t
 decoder_read(DecoderClient *decoder, InputStream &is,
-	     void *buffer, size_t length);
+	     void *buffer, size_t length) noexcept;
 
 static inline size_t
 decoder_read(DecoderClient &decoder, InputStream &is,
-	     void *buffer, size_t length)
+	     void *buffer, size_t length) noexcept
 {
 	return decoder_read(&decoder, is, buffer, length);
 }
 
+/**
+ * Blocking read from the input stream.  Attempts to fill the buffer
+ * as much as possible, until either end-of-file is reached or an
+ * error occurs.
+ *
+ * @return the number of bytes read, or 0 if one of the following
+ * occurs: end of file; error; command (like SEEK or STOP).
+ */
+size_t
+decoder_read_much(DecoderClient *decoder, InputStream &is,
+		  void *buffer, size_t size) noexcept;
+
 /**
  * Blocking read from the input stream.  Attempts to fill the buffer
  * completely; there is no partial result.
@@ -83,7 +95,7 @@ decoder_read(DecoderClient &decoder, InputStream &is,
  */
 bool
 decoder_read_full(DecoderClient *decoder, InputStream &is,
-		  void *buffer, size_t size);
+		  void *buffer, size_t size) noexcept;
 
 /**
  * Skip data on the #InputStream.
@@ -91,6 +103,6 @@ decoder_read_full(DecoderClient *decoder, InputStream &is,
  * @return true on success, false on error or command
  */
 bool
-decoder_skip(DecoderClient *decoder, InputStream &is, size_t size);
+decoder_skip(DecoderClient *decoder, InputStream &is, size_t size) noexcept;
 
 #endif

src/decoder/DecoderList.cxx

@@ -20,6 +20,8 @@
 #include "config.h"
 #include "DecoderList.hxx"
 #include "DecoderPlugin.hxx"
+#include "PluginUnavailable.hxx"
+#include "Log.hxx"
 #include "config/Data.hxx"
 #include "config/Block.hxx"
 #include "plugins/AudiofileDecoderPlugin.hxx"
@@ -45,6 +47,7 @@
 #include "plugins/FluidsynthDecoderPlugin.hxx"
 #include "plugins/SidplayDecoderPlugin.hxx"
 #include "util/Macros.hxx"
+#include "util/RuntimeError.hxx"
 
 #include <string.h>
 
@@ -147,8 +150,17 @@ decoder_plugin_init_all(const ConfigData &config)
 		if (param != nullptr)
 			param->SetUsed();
 
-		if (plugin.Init(*param))
-			decoder_plugins_enabled[i] = true;
+		try {
+			if (plugin.Init(*param))
+				decoder_plugins_enabled[i] = true;
+		} catch (const PluginUnavailable &e) {
+			FormatError(e,
+				    "Decoder plugin '%s' is unavailable",
+				    plugin.name);
+		} catch (...) {
+			std::throw_with_nested(FormatRuntimeError("Failed to initialize decoder plugin '%s'",
+								  plugin.name));
+		}
 	}
 }
 

src/decoder/DecoderPlugin.hxx

@@ -22,7 +22,7 @@
 
 #include "util/Compiler.h"
 
-#include <forward_list>
+#include <forward_list>  // IWYU pragma: export
 
 struct ConfigBlock;
 class InputStream;
@@ -67,18 +67,22 @@ struct DecoderPlugin {
 	void (*file_decode)(DecoderClient &client, Path path_fs);
 
 	/**
-	 * Scan metadata of a file.
+         * Scan metadata of a file.
+         *
+	 * Throws on I/O error.
 	 *
-	 * @return false if the operation has failed
+	 * @return false if the file was not recognized
 	 */
-	bool (*scan_file)(Path path_fs, TagHandler &handler) noexcept;
+	bool (*scan_file)(Path path_fs, TagHandler &handler);
 
 	/**
-	 * Scan metadata of a file.
+	 * Scan metadata of a stream.
+         *
+	 * Throws on I/O error.
 	 *
-	 * @return false if the operation has failed
+	 * @return false if the stream was not recognized
 	 */
-	bool (*scan_stream)(InputStream &is, TagHandler &handler) noexcept;
+	bool (*scan_stream)(InputStream &is, TagHandler &handler);
 
 	/**
 	 * @brief Return a "virtual" filename for subtracks in
@@ -135,7 +139,7 @@ struct DecoderPlugin {
 	 * Read the tag of a file.
 	 */
 	template<typename P>
-	bool ScanFile(P path_fs, TagHandler &handler) const noexcept {
+	bool ScanFile(P path_fs, TagHandler &handler) const {
 		return scan_file != nullptr
 			? scan_file(path_fs, handler)
 			: false;
@@ -144,7 +148,7 @@ struct DecoderPlugin {
 	/**
 	 * Read the tag of a stream.
 	 */
-	bool ScanStream(InputStream &is, TagHandler &handler) const noexcept {
+	bool ScanStream(InputStream &is, TagHandler &handler) const {
 		return scan_stream != nullptr
 			? scan_stream(is, handler)
 			: false;

src/decoder/Thread.cxx

@@ -455,7 +455,13 @@ static void
 decoder_run_song(DecoderControl &dc,
 		 const DetachedSong &song, const char *uri, Path path_fs)
 {
+	if (dc.command == DecoderCommand::SEEK)
+		/* if the SEEK command arrived too late, start the
+		   decoder at the seek position */
+		dc.start_time = dc.seek_time;
+
 	DecoderBridge bridge(dc, dc.start_time.IsPositive(),
+			     dc.initial_seek_essential,
 			     /* pass the song tag only if it's
 				authoritative, i.e. if it's a local
 				file - tags on "stream" songs are just

src/decoder/plugins/AdPlugDecoderPlugin.cxx

@@ -41,7 +41,7 @@ adplug_init(const ConfigBlock &block)
 	FormatDebug(adplug_domain, "adplug %s",
 		    CAdPlug::get_version().c_str());
 
-	sample_rate = block.GetPositiveValue("sample_rate", 48000u);
+	sample_rate = block.GetPositiveValue("sample_rate", 48000U);
 	CheckSampleRate(sample_rate);
 
 	return true;

src/decoder/plugins/AudiofileDecoderPlugin.cxx

@@ -241,7 +241,7 @@ audiofile_stream_decode(DecoderClient &client, InputStream &is)
 }
 
 static bool
-audiofile_scan_stream(InputStream &is, TagHandler &handler) noexcept
+audiofile_scan_stream(InputStream &is, TagHandler &handler)
 {
 	if (!is.IsSeekable() || !is.KnownSize())
 		return false;
@@ -269,6 +269,8 @@ static const char *const audiofile_suffixes[] = {
 };
 
 static const char *const audiofile_mime_types[] = {
+	"audio/wav",
+	"audio/aiff",
 	"audio/x-wav",
 	"audio/x-aiff",
 	nullptr