release v0.23.8

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Merge tag 'v0.23.8'

release v0.23.8

NEWS

@@ -14,11 +14,25 @@ ver 0.24 (not yet released)
 * switch to C++20
   - GCC 10 or clang 11 (or newer) recommended
 
-ver 0.23.8 (not yet released)
+ver 0.23.8 (2022/07/09)
 * storage
   - curl: fix crash if web server does not understand WebDAV
-* output
-  - pipewire: fix crash with PipeWire 0.3.53
+* input
+  - cdio_paranoia: fix crash if no drive was found
+  - cdio_paranoia: faster cancellation
+  - cdio_paranoia: don't scan for replay gain tags
+  - pipewire: fix playback of very short tracks
+  - pipewire: drop all buffers before manual song change
+  - pipewire: fix stuttering after manual song change
+  - snapcast: fix busy loop while paused
+  - snapcast: fix stuttering after resuming playback
+* mixer
+  - better error messages
+  - alsa: fix setting volume before playback starts
+  - pipewire: fix crash bug
+  - pipewire: fix volume change events with PipeWire 0.3.53
+  - pipewire: don't force initial volume=100%
+* support libfmt 9
 
 ver 0.23.7 (2022/05/09)
 * database

doc/user.rst

@@ -1095,7 +1095,19 @@ The "music directory" is where you store your music files. :program:`MPD` stores
 
 Depending on the size of your music collection and the speed of the storage, this can take a while.
 
-To exclude a file from the update, create a file called :file:`.mpdignore` in its parent directory. Each line of that file may contain a list of shell wildcards. Matching files in the current directory and all subdirectories are excluded.
+To exclude a file from the update, create a file called
+:file:`.mpdignore` in its parent directory.  Each line of that file
+may contain a list of shell wildcards.  Matching files (or
+directories) in the current directory and all subdirectories are
+excluded.  Example::
+
+  *.opus
+  99*
+
+Subject to pattern matching is the file/directory name.  It is (not
+yet) possible to match nested path names, e.g. something like
+``foo/*.flac`` is not possible.
+
 
 Mounting other storages into the music directory
 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

python/build/libs.py

@@ -382,14 +382,14 @@ ffmpeg = FfmpegProject(
 )
 
 openssl = OpenSSLProject(
-    'https://www.openssl.org/source/openssl-3.0.3.tar.gz',
-    'ee0078adcef1de5f003c62c80cc96527721609c6f3bb42b7795df31f8b558c0b',
+    'https://www.openssl.org/source/openssl-3.0.5.tar.gz',
+    'aa7d8d9bef71ad6525c55ba11e5f4397889ce49c2c9349dcea6d3e4f0b024a7a',
     'include/openssl/ossl_typ.h',
 )
 
 curl = CmakeProject(
-    'https://curl.se/download/curl-7.83.1.tar.xz',
-    '2cb9c2356e7263a1272fd1435ef7cdebf2cd21400ec287b068396deb705c22c4',
+    'https://curl.se/download/curl-7.84.0.tar.xz',
+    '2d118b43f547bfe5bae806d8d47b4e596ea5b25a6c1f080aef49fbcd817c5db8',
     'lib/libcurl.a',
     [
         '-DBUILD_CURL_EXE=OFF',

src/Log.hxx

@@ -45,7 +45,10 @@ void
 LogFmt(LogLevel level, const Domain &domain,
        const S &format_str, Args&&... args) noexcept
 {
-#if FMT_VERSION >= 70000
+#if FMT_VERSION >= 90000
+	return LogVFmt(level, domain, format_str,
+		       fmt::make_format_args(args...));
+#elif FMT_VERSION >= 70000
 	return LogVFmt(level, domain, fmt::to_string_view(format_str),
 		       fmt::make_args_checked<Args...>(format_str,
 						       args...));

src/client/Response.hxx

@@ -82,7 +82,10 @@ public:
 
 	template<typename S, typename... Args>
 	bool Fmt(const S &format_str, Args&&... args) noexcept {
-#if FMT_VERSION >= 70000
+#if FMT_VERSION >= 90000
+		return VFmt(format_str,
+			    fmt::make_format_args(args...));
+#elif FMT_VERSION >= 70000
 		return VFmt(fmt::to_string_view(format_str),
 			    fmt::make_args_checked<Args...>(format_str,
 							    args...));
@@ -109,7 +112,10 @@ public:
 	template<typename S, typename... Args>
 	void FmtError(enum ack code,
 		      const S &format_str, Args&&... args) noexcept {
-#if FMT_VERSION >= 70000
+#if FMT_VERSION >= 90000
+		return VFmtError(code, format_str,
+				 fmt::make_format_args(args...));
+#elif FMT_VERSION >= 70000
 		return VFmtError(code, fmt::to_string_view(format_str),
 				 fmt::make_args_checked<Args...>(format_str,
 								 args...));

src/command/OtherCommands.cxx

@@ -332,15 +332,11 @@ handle_getvol(Client &client, Request, Response &r)
 }
 
 CommandResult
-handle_setvol(Client &client, Request args, Response &r)
+handle_setvol(Client &client, Request args, Response &)
 {
 	unsigned level = args.ParseUnsigned(0, 100);
 
-	if (!volume_level_change(client.GetPartition().outputs, level)) {
-		r.Error(ACK_ERROR_SYSTEM, "problems setting volume");
-		return CommandResult::ERROR;
-	}
-
+	volume_level_change(client.GetPartition().outputs, level);
 	return CommandResult::OK;
 }
 
@@ -363,11 +359,8 @@ handle_volume(Client &client, Request args, Response &r)
 	else if (new_volume > 100)
 		new_volume = 100;
 
-	if (new_volume != old_volume &&
-	    !volume_level_change(outputs, new_volume)) {
-		r.Error(ACK_ERROR_SYSTEM, "problems setting volume");
-		return CommandResult::ERROR;
-	}
+	if (new_volume != old_volume)
+		volume_level_change(outputs, new_volume);
 
 	return CommandResult::OK;
 }

src/decoder/Control.hxx

@@ -257,6 +257,12 @@ public:
 		return HasFailed();
 	}
 
+	[[gnu::pure]]
+	bool LockIsReplayGainEnabled() const noexcept {
+		const std::scoped_lock<Mutex> protect(mutex);
+		return replay_gain_mode != ReplayGainMode::OFF;
+	}
+
 	/**
 	 * Transition this obejct from DecoderState::START to
 	 * DecoderState::DECODE.

src/decoder/Thread.cxx

@@ -36,6 +36,7 @@
 #include "util/RuntimeError.hxx"
 #include "util/Domain.hxx"
 #include "util/ScopeExit.hxx"
+#include "util/StringCompare.hxx"
 #include "thread/Name.hxx"
 #include "tag/ApeReplayGain.hxx"
 #include "Log.hxx"
@@ -261,12 +262,16 @@ LoadReplayGain(DecoderClient &client, InputStream &is)
 static void
 MaybeLoadReplayGain(DecoderBridge &bridge, InputStream &is)
 {
-	{
-		const std::scoped_lock<Mutex> protect(bridge.dc.mutex);
-		if (bridge.dc.replay_gain_mode == ReplayGainMode::OFF)
+	if (!bridge.dc.LockIsReplayGainEnabled())
 		/* ReplayGain is disabled */
 		return;
-	}
+
+	if (is.HasMimeType() &&
+	    StringStartsWith(is.GetMimeType(), "audio/x-mpd-"))
+		/* skip for (virtual) files (e.g. from the
+		   cdio_paranoia input plugin) which cannot possibly
+		   contain tags */
+		return;
 
 	LoadReplayGain(bridge, is);
 }

src/input/plugins/CdioParanoiaInputPlugin.cxx

@@ -30,10 +30,12 @@
 #include "util/RuntimeError.hxx"
 #include "util/Domain.hxx"
 #include "util/ByteOrder.hxx"
+#include "util/ScopeExit.hxx"
 #include "fs/AllocatedPath.hxx"
 #include "Log.hxx"
 #include "config/Block.hxx"
 
+#include <algorithm>
 #include <cassert>
 #include <cstdint>
 
@@ -48,21 +50,19 @@ class CdioParanoiaInputStream final : public InputStream {
 	CdIo_t *const cdio;
 	CdromParanoia para;
 
-	const lsn_t lsn_from, lsn_to;
-	int lsn_relofs;
+	const lsn_t lsn_from;
 
 	char buffer[CDIO_CD_FRAMESIZE_RAW];
-	int buffer_lsn;
+	lsn_t buffer_lsn;
 
  public:
 	CdioParanoiaInputStream(const char *_uri, Mutex &_mutex,
 				cdrom_drive_t *_drv, CdIo_t *_cdio,
 				bool reverse_endian,
-				lsn_t _lsn_from, lsn_t _lsn_to)
+				lsn_t _lsn_from, lsn_t lsn_to)
 		:InputStream(_uri, _mutex),
 		 drv(_drv), cdio(_cdio), para(drv),
-		 lsn_from(_lsn_from), lsn_to(_lsn_to),
-		 lsn_relofs(0),
+		 lsn_from(_lsn_from),
 		 buffer_lsn(-1)
 	{
 		/* Set reading mode for full paranoia, but allow
@@ -173,9 +173,12 @@ cdio_detect_device()
 	if (devices == nullptr)
 		return nullptr;
 
-	AllocatedPath path = AllocatedPath::FromFS(devices[0]);
-	cdio_free_device_list(devices);
-	return path;
+	AtScopeExit(devices) { cdio_free_device_list(devices); };
+
+	if (devices[0] == nullptr)
+		return nullptr;
+
+	return AllocatedPath::FromFS(devices[0]);
 }
 
 static InputStreamPtr
@@ -271,29 +274,30 @@ CdioParanoiaInputStream::Seek(std::unique_lock<Mutex> &,
 		return;
 
 	/* calculate current LSN */
-	lsn_relofs = new_offset / CDIO_CD_FRAMESIZE_RAW;
-	offset = new_offset;
+	const lsn_t lsn_relofs = new_offset / CDIO_CD_FRAMESIZE_RAW;
 
-	{
+	if (lsn_relofs != buffer_lsn) {
 		const ScopeUnlock unlock(mutex);
 		para.Seek(lsn_from + lsn_relofs);
 	}
+
+	offset = new_offset;
 }
 
 size_t
 CdioParanoiaInputStream::Read(std::unique_lock<Mutex> &,
 			      void *ptr, size_t length)
 {
-	size_t nbytes = 0;
-	char *wptr = (char *) ptr;
-
-	while (length > 0) {
 	/* end of track ? */
-		if (lsn_from + lsn_relofs > lsn_to)
-			break;
+	if (IsEOF())
+		return 0;
 
 	//current sector was changed ?
 	const int16_t *rbuf;
+
+	const lsn_t lsn_relofs = offset / CDIO_CD_FRAMESIZE_RAW;
+	const std::size_t diff = offset % CDIO_CD_FRAMESIZE_RAW;
+
 	if (lsn_relofs != buffer_lsn) {
 		const ScopeUnlock unlock(mutex);
 
@@ -318,26 +322,14 @@ CdioParanoiaInputStream::Read(std::unique_lock<Mutex> &,
 		rbuf = (const int16_t *)buffer;
 	}
 
-		//correct offset
-		const int diff = offset - lsn_relofs * CDIO_CD_FRAMESIZE_RAW;
-
-		assert(diff >= 0 && diff < CDIO_CD_FRAMESIZE_RAW);
-
 	const size_t maxwrite = CDIO_CD_FRAMESIZE_RAW - diff;  //# of bytes pending in current buffer
-		const size_t len = (length < maxwrite? length : maxwrite);
+	const std::size_t nbytes = std::min(length, maxwrite);
 
 	//skip diff bytes from this lsn
-		memcpy(wptr, ((const char *)rbuf) + diff, len);
-		//update pointer
-		wptr += len;
-		nbytes += len;
+	memcpy(ptr, ((const char *)rbuf) + diff, nbytes);
 
 	//update offset
-		offset += len;
-		lsn_relofs = offset / CDIO_CD_FRAMESIZE_RAW;
-		//update length
-		length -= len;
-	}
+	offset += nbytes;
 
 	return nbytes;
 }
@@ -345,7 +337,7 @@ CdioParanoiaInputStream::Read(std::unique_lock<Mutex> &,
 bool
 CdioParanoiaInputStream::IsEOF() const noexcept
 {
-	return lsn_from + lsn_relofs > lsn_to;
+	return offset >= size;
 }
 
 static constexpr const char *cdio_paranoia_prefixes[] = {

src/lib/curl/patches/no_CMAKE_C_IMPLICIT_LINK_LIBRARIES.patch

@@ -1,6 +1,8 @@
---- curl-7.75.0.orig/CMakeLists.txt	2021-02-02 09:26:24.000000000 +0100
-+++ curl-7.75.0/CMakeLists.txt	2021-03-25 20:17:25.445684029 +0100
-@@ -1453,7 +1453,7 @@
+Index: curl-7.84.0/CMakeLists.txt
+===================================================================
+--- curl-7.84.0.orig/CMakeLists.txt
++++ curl-7.84.0/CMakeLists.txt
+@@ -1536,7 +1536,7 @@ set(includedir              "\${prefix}/
  set(LDFLAGS                 "${CMAKE_SHARED_LINKER_FLAGS}")
  set(LIBCURL_LIBS            "")
  set(libdir                  "${CMAKE_INSTALL_PREFIX}/lib")
@@ -8,4 +10,4 @@
 +foreach(_lib ${CURL_LIBS})
    if(TARGET "${_lib}")
      set(_libname "${_lib}")
-     get_target_property(_libtype "${_libname}" TYPE)
+     get_target_property(_imported "${_libname}" IMPORTED)

src/lib/curl/patches/no_netrc.patch

@@ -1,20 +1,20 @@
-Index: curl-7.71.1/lib/url.c
+Index: curl-7.84.0/lib/url.c
 ===================================================================
---- curl-7.71.1.orig/lib/url.c
-+++ curl-7.71.1/lib/url.c
-@@ -2871,6 +2871,7 @@
-   }
+--- curl-7.84.0.orig/lib/url.c
++++ curl-7.84.0/lib/url.c
+@@ -3003,6 +3003,7 @@ static CURLcode override_login(struct Cu
  
+ #ifndef CURL_DISABLE_NETRC
    conn->bits.netrc = FALSE;
 +#ifndef __BIONIC__
    if(data->set.use_netrc && !data->set.str[STRING_USERNAME]) {
      bool netrc_user_changed = FALSE;
      bool netrc_passwd_changed = FALSE;
-@@ -2895,6 +2896,7 @@
-       conn->bits.user_passwd = TRUE; /* enable user+password */
+@@ -3079,6 +3080,7 @@ static CURLcode override_login(struct Cu
+         return CURLE_OUT_OF_MEMORY;
      }
    }
 +#endif
  
-   /* for updated strings, we update them in the URL */
-   if(*userp) {
+   return CURLE_OK;
+ }

src/mixer/MixerAll.cxx

@@ -73,42 +73,77 @@ MultipleOutputs::GetVolume() const noexcept
 	return total / ok;
 }
 
-static bool
-output_mixer_set_volume(AudioOutputControl &ao, unsigned volume) noexcept
+enum class SetVolumeResult {
+	NO_MIXER,
+	DISABLED,
+	ERROR,
+	OK,
+};
+
+static SetVolumeResult
+output_mixer_set_volume(AudioOutputControl &ao, unsigned volume)
 {
 	assert(volume <= 100);
 
 	auto *mixer = ao.GetMixer();
 	if (mixer == nullptr)
-		return false;
+		return SetVolumeResult::NO_MIXER;
 
 	/* software mixers are always updated, even if they are
 	   disabled */
-	if (!ao.IsReallyEnabled() && !mixer->IsPlugin(software_mixer_plugin))
-		return false;
+	if (!mixer->IsPlugin(software_mixer_plugin) &&
+	    /* "global" mixers can be used even if the output hasn't
+	       been used yet */
+	    !(mixer->IsGlobal() ? ao.IsEnabled() : ao.IsReallyEnabled()))
+		return SetVolumeResult::DISABLED;
 
 	try {
 		mixer_set_volume(mixer, volume);
-		return true;
+		return SetVolumeResult::OK;
 	} catch (...) {
 		FmtError(mixer_domain,
 			 "Failed to set mixer for '{}': {}",
 			 ao.GetName(), std::current_exception());
-		return false;
+		std::throw_with_nested(std::runtime_error(fmt::format("Failed to set mixer for '{}'",
+								      ao.GetName())));
 	}
 }
 
-bool
-MultipleOutputs::SetVolume(unsigned volume) noexcept
+void
+MultipleOutputs::SetVolume(unsigned volume)
 {
 	assert(volume <= 100);
 
-	bool success = false;
-	for (const auto &ao : outputs)
-		success = output_mixer_set_volume(*ao, volume)
-			|| success;
+	SetVolumeResult result = SetVolumeResult::NO_MIXER;
+	std::exception_ptr error;
 
-	return success;
+	for (const auto &ao : outputs) {
+		try {
+			auto r = output_mixer_set_volume(*ao, volume);
+			if (r > result)
+				result = r;
+		} catch (...) {
+			/* remember the first error */
+			if (!error) {
+				error = std::current_exception();
+				result = SetVolumeResult::ERROR;
+			}
+		}
+	}
+
+	switch (result) {
+	case SetVolumeResult::NO_MIXER:
+		throw std::runtime_error{"No mixer"};
+
+	case SetVolumeResult::DISABLED:
+		throw std::runtime_error{"All outputs are disabled"};
+
+	case SetVolumeResult::ERROR:
+		std::rethrow_exception(error);
+
+	case SetVolumeResult::OK:
+		break;
+	}
 }
 
 static int

src/mixer/MixerControl.cxx

@@ -60,9 +60,9 @@ mixer_open(Mixer *mixer)
 	try {
 		mixer->Open();
 		mixer->open = true;
-		mixer->failed = false;
+		mixer->failure = {};
 	} catch (...) {
-		mixer->failed = true;
+		mixer->failure = std::current_exception();
 		throw;
 	}
 }
@@ -75,6 +75,7 @@ mixer_close_internal(Mixer *mixer)
 
 	mixer->Close();
 	mixer->open = false;
+	mixer->failure = {};
 }
 
 void
@@ -95,20 +96,6 @@ mixer_auto_close(Mixer *mixer)
 		mixer_close(mixer);
 }
 
-/*
- * Close the mixer due to failure.  The mutex must be locked before
- * calling this function.
- */
-static void
-mixer_failed(Mixer *mixer)
-{
-	assert(mixer->open);
-
-	mixer_close_internal(mixer);
-
-	mixer->failed = true;
-}
-
 int
 mixer_get_volume(Mixer *mixer)
 {
@@ -116,7 +103,7 @@ mixer_get_volume(Mixer *mixer)
 
 	assert(mixer != nullptr);
 
-	if (mixer->plugin.global && !mixer->failed)
+	if (mixer->plugin.global && !mixer->failure)
 		mixer_open(mixer);
 
 	const std::scoped_lock<Mutex> protect(mixer->mutex);
@@ -125,7 +112,8 @@ mixer_get_volume(Mixer *mixer)
 		try {
 			volume = mixer->GetVolume();
 		} catch (...) {
-			mixer_failed(mixer);
+			mixer_close_internal(mixer);
+			mixer->failure = std::current_exception();
 			throw;
 		}
 	} else
@@ -140,11 +128,13 @@ mixer_set_volume(Mixer *mixer, unsigned volume)
 	assert(mixer != nullptr);
 	assert(volume <= 100);
 
-	if (mixer->plugin.global && !mixer->failed)
+	if (mixer->plugin.global && !mixer->failure)
 		mixer_open(mixer);
 
 	const std::scoped_lock<Mutex> protect(mixer->mutex);
 
 	if (mixer->open)
 		mixer->SetVolume(volume);
+	else if (mixer->failure)
+		std::rethrow_exception(mixer->failure);
 }

src/mixer/MixerInternal.hxx

@@ -25,6 +25,8 @@
 #include "thread/Mutex.hxx"
 #include "util/Compiler.h"
 
+#include <exception>
+
 class MixerListener;
 
 class Mixer {
@@ -39,17 +41,17 @@ public:
 	 */
 	Mutex mutex;
 
+	/**
+	 * Contains error details if this mixer has failed.  If set,
+	 * it should not be reopened automatically.
+	 */
+	std::exception_ptr failure;
+
 	/**
 	 * Is the mixer device currently open?
 	 */
 	bool open = false;
 
-	/**
-	 * Has this mixer failed, and should not be reopened
-	 * automatically?
-	 */
-	bool failed = false;
-
 public:
 	explicit Mixer(const MixerPlugin &_plugin,
 		       MixerListener &_listener) noexcept
@@ -63,6 +65,10 @@ public:
 		return &plugin == &other;
 	}
 
+	bool IsGlobal() const noexcept {
+		return plugin.global;
+	}
+
 	/**
 	 * Open mixer device
 	 *

src/mixer/Volume.cxx

@@ -71,16 +71,16 @@ software_volume_change(MultipleOutputs &outputs, unsigned volume)
 	return true;
 }
 
-static bool
+static void
 hardware_volume_change(MultipleOutputs &outputs, unsigned volume)
 {
 	/* reset the cache */
 	last_hardware_volume = -1;
 
-	return outputs.SetVolume(volume);
+	outputs.SetVolume(volume);
 }
 
-bool
+void
 volume_level_change(MultipleOutputs &outputs, unsigned volume)
 {
 	assert(volume <= 100);
@@ -89,7 +89,7 @@ volume_level_change(MultipleOutputs &outputs, unsigned volume)
 
 	idle_add(IDLE_MIXER);
 
-	return hardware_volume_change(outputs, volume);
+	hardware_volume_change(outputs, volume);
 }
 
 bool

src/mixer/Volume.hxx

@@ -30,7 +30,10 @@ InvalidateHardwareVolume() noexcept;
 int
 volume_level_get(const MultipleOutputs &outputs) noexcept;
 
-bool
+/**
+ * Throws on error.
+ */
+void
 volume_level_change(MultipleOutputs &outputs, unsigned volume);
 
 bool

src/output/MultipleOutputs.hxx

@@ -141,10 +141,11 @@ public:
 	/**
 	 * Sets the volume on all available mixers.
 	 *
+	 * Throws on error.
+	 *
 	 * @param volume the volume (range 0..100)
-	 * @return true on success, false on failure
 	 */
-	bool SetVolume(unsigned volume) noexcept;
+	void SetVolume(unsigned volume);
 
 	/**
 	 * Similar to GetVolume(), but gets the volume only for

src/output/plugins/PipeWireOutputPlugin.cxx

@@ -24,6 +24,7 @@
 #include "../Error.hxx"
 #include "mixer/plugins/PipeWireMixerPlugin.hxx"
 #include "pcm/Silence.hxx"
+#include "lib/fmt/ExceptionFormatter.hxx"
 #include "system/Error.hxx"
 #include "util/BitReverse.hxx"
 #include "util/Domain.hxx"
@@ -55,6 +56,7 @@
 
 #include <algorithm>
 #include <array>
+#include <numeric>
 #include <stdexcept>
 #include <string>
 
@@ -84,7 +86,14 @@ class PipeWireOutput final : AudioOutput {
 
 	uint32_t target_id = PW_ID_ANY;
 
-	float volume = 1.0;
+	/**
+	 * The current volume level (0.0 .. 1.0).
+	 *
+	 * This get initialized to -1 which means "unknown", so
+	 * restore_volume will not attempt to override PipeWire's
+	 * initial volume level.
+	 */
+	float volume = -1;
 
 	PipeWireMixer *mixer = nullptr;
 	unsigned channels;
@@ -216,27 +225,34 @@ private:
 		o.Drained();
 	}
 
-	void ControlInfo(const struct pw_stream_control *control) noexcept {
-		float sum = 0;
-		unsigned c;
-		for (c = 0; c < control->n_values; c++)
-			sum += control->values[c];
+	void OnChannelVolumes(const struct pw_stream_control &control) noexcept {
+		if (control.n_values < 1)
+			return;
 
-		sum /= control->n_values;
+		float sum = std::accumulate(control.values,
+					    control.values + control.n_values,
+					    0.0f);
+		volume = std::cbrt(sum / control.n_values);
 
 		if (mixer != nullptr)
-			pipewire_mixer_on_change(*mixer, std::cbrt(sum));
+			pipewire_mixer_on_change(*mixer, volume);
 
 		pw_thread_loop_signal(thread_loop, false);
 	}
 
-	static void ControlInfo(void *data,
-				[[maybe_unused]] uint32_t id,
+	void ControlInfo([[maybe_unused]] uint32_t id,
+			 const struct pw_stream_control &control) noexcept {
+		switch (id) {
+		case SPA_PROP_channelVolumes:
+			OnChannelVolumes(control);
+			break;
+		}
+	}
+
+	static void ControlInfo(void *data, uint32_t id,
 				const struct pw_stream_control *control) noexcept {
 		auto &o = *(PipeWireOutput *)data;
-		if (control->name != nullptr &&
-		    StringIsEqual(control->name, "Channel Volumes"))
-			o.ControlInfo(control);
+		o.ControlInfo(id, *control);
 	}
 
 #if defined(ENABLE_DSD) && defined(SPA_AUDIO_DSD_FLAG_NONE)
@@ -308,22 +324,38 @@ PipeWireOutput::PipeWireOutput(const ConfigBlock &block)
 	}
 }
 
+/**
+ * Throws on error.
+ *
+ * @param volume a volume level between 0.0 and 1.0
+ */
+static void
+SetVolume(struct pw_stream &stream, unsigned channels, float volume)
+{
+	float value[MAX_CHANNELS];
+	std::fill_n(value, channels, volume * volume * volume);
+
+	if (pw_stream_set_control(&stream,
+				  SPA_PROP_channelVolumes, channels, value,
+				  0) != 0)
+		throw std::runtime_error("pw_stream_set_control() failed");
+}
+
 void
 PipeWireOutput::SetVolume(float _volume)
 {
+	if (thread_loop == nullptr) {
+		/* the mixer is open (because it is a "global" mixer),
+		   but Enable() on this output has not yet been
+		   called */
+		volume = _volume;
+		return;
+	}
+
 	const PipeWire::ThreadLoopLock lock(thread_loop);
 
-	float newvol = _volume*_volume*_volume;
-
-	if (stream != nullptr && !restore_volume) {
-		float vol[MAX_CHANNELS];
-		std::fill_n(vol, channels, newvol);
-
-		if (pw_stream_set_control(stream,
-				  SPA_PROP_channelVolumes, channels, vol,
-				  0) != 0)
-			throw std::runtime_error("pw_stream_set_control() failed");
-	}
+	if (stream != nullptr && !restore_volume)
+		::SetVolume(*stream, channels, _volume);
 
 	volume = _volume;
 }
@@ -639,7 +671,16 @@ PipeWireOutput::ParamChanged([[maybe_unused]] uint32_t id,
 {
 	if (restore_volume) {
 		restore_volume = false;
-		SetVolume(volume);
+
+		if (volume >= 0) {
+			try {
+				::SetVolume(*stream, channels, volume);
+			} catch (...) {
+				FmtError(pipewire_output_domain,
+					 FMT_STRING("Failed to restore volume: {}"),
+					 std::current_exception());
+			}
+		}
 	}
 
 #if defined(ENABLE_DSD) && defined(SPA_AUDIO_DSD_FLAG_NONE)
@@ -824,6 +865,17 @@ PipeWireOutput::Drain()
 {
 	const PipeWire::ThreadLoopLock lock(thread_loop);
 
+	if (drained)
+		return;
+
+	if (!active) {
+		/* there is data in the ring_buffer, but the stream is
+		   not yet active; activate it now to ensure it is
+		   played before this method returns */
+		active = true;
+		pw_stream_set_active(stream, true);
+	}
+
 	drain_requested = true;
 	AtScopeExit(this) { drain_requested = false; };
 
@@ -839,7 +891,24 @@ PipeWireOutput::Cancel() noexcept
 	const PipeWire::ThreadLoopLock lock(thread_loop);
 	interrupted = false;
 
+	if (drained)
+		return;
+
+	/* clear MPD's ring buffer */
 	ring_buffer->reset();
+
+	/* clear libpipewire's buffer */
+	pw_stream_flush(stream, false);
+	drained = true;
+
+	/* pause the PipeWire stream so libpipewire ceases invoking
+	   the "process" callback (we have no data until our Play()
+	   method gets called again); the stream will be resume by
+	   Play() after the ring_buffer has been refilled */
+	if (active) {
+		active = false;
+		pw_stream_set_active(stream, false);
+	}
 }
 
 bool

src/output/plugins/snapcast/SnapcastOutputPlugin.cxx

@@ -215,9 +215,8 @@ SnapcastOutput::RemoveClient(SnapcastClient &client) noexcept
 std::chrono::steady_clock::duration
 SnapcastOutput::Delay() const noexcept
 {
-	if (!LockHasClients() && pause) {
-		/* if there's no client and this output is paused,
-		   then Pause() will not do anything, it will not fill
+	if (pause) {
+		/* Pause() will not do anything, it will not fill
 		   the buffer and it will not update the timer;
 		   therefore, we reset the timer here */
 		timer->Reset();

subprojects/fmt.wrap

@@ -3,10 +3,10 @@ directory = fmt-8.1.1
 source_url = https://github.com/fmtlib/fmt/archive/8.1.1.tar.gz
 source_filename = fmt-8.1.1.tar.gz
 source_hash = 3d794d3cf67633b34b2771eb9f073bde87e846e0d395d254df7b211ef1ec7346
-patch_filename = fmt_8.1.1-1_patch.zip
-patch_url = https://wrapdb.mesonbuild.com/v2/fmt_8.1.1-1/get_patch
-patch_hash = 6035a67c7a8c90bed74c293c7265c769f47a69816125f7566bccb8e2543cee5e
+patch_filename = fmt_8.1.1-2_patch.zip
+patch_url = https://wrapdb.mesonbuild.com/v2/fmt_8.1.1-2/get_patch
+patch_hash = cd001046281330a8862591780a9ea71a1fa594edd0d015deb24e44680c9ea33b
+wrapdb_version = 8.1.1-2
 
 [provide]
 fmt = fmt_dep
-

subprojects/vorbis.wrap

@@ -3,9 +3,10 @@ directory = libvorbis-1.3.7
 source_url = https://downloads.xiph.org/releases/vorbis/libvorbis-1.3.7.tar.xz
 source_filename = libvorbis-1.3.7.tar.xz
 source_hash = b33cc4934322bcbf6efcbacf49e3ca01aadbea4114ec9589d1b1e9d20f72954b
-patch_filename = vorbis_1.3.7-2_patch.zip
-patch_url = https://wrapdb.mesonbuild.com/v2/vorbis_1.3.7-2/get_patch
-patch_hash = fe302576cbf8408754b332b539ea1b83f0f96fa9aae50a5d1fea911713d5f21c
+patch_filename = vorbis_1.3.7-3_patch.zip
+patch_url = https://wrapdb.mesonbuild.com/v2/vorbis_1.3.7-3/get_patch
+patch_hash = 6cb90a61ede8c64d3e8e379b96dcc800c9dd69e925122b3d73d8f59a563c3afa
+wrapdb_version = 1.3.7-3
 
 [provide]
 vorbis = vorbis_dep