release v0.20.17

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

Closes #212

NEWS

@@ -1,3 +1,12 @@
+ver 0.20.17 (2018/02/11)
+* output
+  - alsa: fix crash bug with 8 channels
+* mixer
+  - alsa: fix rounding error at volume 0
+* fix real-time and idle scheduling with Musl
+* Android
+  - fix compatibility with Android 4.0
+
 ver 0.20.16 (2018/02/03)
 * output
   - pulse: fix crash during auto-detection

android/AndroidManifest.xml

@@ -2,10 +2,10 @@
 <manifest xmlns:android="http://schemas.android.com/apk/res/android"
           package="org.musicpd"
           android:installLocation="auto"
-          android:versionCode="15"
-          android:versionName="0.20.16">
+          android:versionCode="16"
+          android:versionName="0.20.17">
 
-  <uses-sdk android:minSdkVersion="9" android:targetSdkVersion="17"/>
+  <uses-sdk android:minSdkVersion="14" android:targetSdkVersion="17"/>
 
   <application android:icon="@drawable/icon" android:label="@string/app_name">
     <activity android:name=".Main"

android/build.py

@@ -46,7 +46,7 @@ class AndroidNdkToolchain:
 
         self.ndk_arch = 'arm'
         android_abi = 'armeabi-v7a'
-        ndk_platform = 'android-21'
+        ndk_platform = 'android-14'
 
         # select the NDK compiler
         gcc_version = '4.9'
@@ -67,7 +67,7 @@ class AndroidNdkToolchain:
 
         common_flags = '-Os -g'
         common_flags += ' -fPIC'
-        common_flags += ' -march=armv7-a -mfloat-abi=softfp'
+        common_flags += ' -march=armv7-a -mfpu=vfp -mfloat-abi=softfp'
 
         toolchain_bin = os.path.join(toolchain_path, 'bin')
         llvm_bin = os.path.join(llvm_path, 'bin')
@@ -87,7 +87,7 @@ class AndroidNdkToolchain:
         self.cppflags = '--sysroot=' + sysroot + \
             ' -isystem ' + os.path.join(install_prefix, 'include') + \
             ' -isystem ' + os.path.join(sysroot, 'usr', 'include', arch) + \
-            ' -D__ANDROID_API__=21'
+            ' -D__ANDROID_API__=14'
         self.ldflags = '--sysroot=' + sysroot + \
             ' -L' + os.path.join(install_prefix, 'lib') + \
             ' -L' + os.path.join(target_root, 'usr', 'lib') + \

configure.ac

@@ -1,10 +1,10 @@
 AC_PREREQ(2.60)
 
-AC_INIT(mpd, 0.20.16, musicpd-dev-team@lists.sourceforge.net)
+AC_INIT(mpd, 0.20.17, musicpd-dev-team@lists.sourceforge.net)
 
 VERSION_MAJOR=0
 VERSION_MINOR=20
-VERSION_REVISION=16
+VERSION_REVISION=17
 VERSION_EXTRA=0
 
 AC_CONFIG_SRCDIR([src/Main.cxx])

doc/user.xml

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

python/build/libs.py

@@ -1,4 +1,6 @@
 import re
+from os.path import abspath
+
 from build.project import Project
 from build.zlib import ZlibProject
 from build.autotools import AutotoolsProject
@@ -358,6 +360,8 @@ curl = AutotoolsProject(
         '--disable-crypto-auth', '--disable-ntlm-wb', '--disable-tls-srp', '--disable-cookies',
         '--without-ssl', '--without-gnutls', '--without-nss', '--without-libssh2',
     ],
+
+    patches='src/lib/curl/patches',
 )
 
 boost = BoostProject(

python/build/project.py

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

python/build/quilt.py

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

src/SongSave.cxx

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

src/db/update/Service.cxx

@@ -29,6 +29,7 @@
 #include "Idle.hxx"
 #include "Log.hxx"
 #include "thread/Thread.hxx"
+#include "thread/Name.hxx"
 #include "thread/Util.hxx"
 
 #ifndef NDEBUG
@@ -113,6 +114,8 @@ UpdateService::Task()
 {
 	assert(walk != nullptr);
 
+	SetThreadName("update");
+
 	if (!next.path_utf8.empty())
 		FormatDebug(update_domain, "starting: %s",
 			    next.path_utf8.c_str());

src/filter/plugins/ConvertFilterPlugin.cxx

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

src/input/plugins/FileInputPlugin.cxx

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

src/lib/curl/patches/no_netrc.patch

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

src/lib/curl/patches/only_lib.patch

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

src/lib/curl/patches/series

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

src/mixer/plugins/volume_mapping.c

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

src/pcm/Order.cxx

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

src/protocol/ArgParser.cxx

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

src/queue/PlaylistState.cxx

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

src/tag/ReplayGain.cxx

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

src/thread/Util.cxx

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

src/util/NumberParser.hxx

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