237 lines
4.7 KiB
C++
237 lines
4.7 KiB
C++
/*
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* Copyright 2003-2021 The Music Player Daemon Project
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* http://www.musicpd.org
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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#include "config.h"
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#include "Partition.hxx"
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#include "Instance.hxx"
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#include "Log.hxx"
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#include "config/PartitionConfig.hxx"
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#include "lib/fmt/ExceptionFormatter.hxx"
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#include "song/DetachedSong.hxx"
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#include "mixer/Volume.hxx"
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#include "IdleFlags.hxx"
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#include "client/Listener.hxx"
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#include "client/Client.hxx"
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#include "input/cache/Manager.hxx"
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#include "util/Domain.hxx"
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static constexpr Domain cache_domain("cache");
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Partition::Partition(Instance &_instance,
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const char *_name,
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const PartitionConfig &_config) noexcept
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:instance(_instance),
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name(_name),
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config(_config),
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listener(new ClientListener(instance.event_loop, *this)),
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idle_monitor(instance.event_loop, BIND_THIS_METHOD(OnIdleMonitor)),
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global_events(instance.event_loop, BIND_THIS_METHOD(OnGlobalEvent)),
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playlist(config.queue.max_length, *this),
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outputs(pc, *this),
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pc(*this, outputs,
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instance.input_cache.get(),
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config.player)
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{
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UpdateEffectiveReplayGainMode();
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}
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Partition::~Partition() noexcept = default;
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void
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Partition::BeginShutdown() noexcept
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{
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pc.Kill();
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listener.reset();
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}
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static void
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PrefetchSong(InputCacheManager &cache, const char *uri) noexcept
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{
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if (cache.Contains(uri))
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return;
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FmtDebug(cache_domain, "Prefetch '{}'", uri);
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try {
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cache.Prefetch(uri);
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} catch (...) {
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FmtError(cache_domain,
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"Prefetch '{}' failed: {}",
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uri, std::current_exception());
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}
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}
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static void
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PrefetchSong(InputCacheManager &cache, const DetachedSong &song) noexcept
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{
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PrefetchSong(cache, song.GetURI());
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}
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inline void
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Partition::PrefetchQueue() noexcept
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{
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if (!instance.input_cache)
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return;
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auto &cache = *instance.input_cache;
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int next = playlist.GetNextPosition();
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if (next >= 0)
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PrefetchSong(cache, playlist.queue.Get(next));
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// TODO: prefetch more songs
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}
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void
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Partition::UpdateEffectiveReplayGainMode() noexcept
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{
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auto mode = replay_gain_mode;
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if (mode == ReplayGainMode::AUTO)
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mode = playlist.queue.random
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? ReplayGainMode::TRACK
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: ReplayGainMode::ALBUM;
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pc.LockSetReplayGainMode(mode);
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outputs.SetReplayGainMode(mode);
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}
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#ifdef ENABLE_DATABASE
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const Database *
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Partition::GetDatabase() const noexcept
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{
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return instance.GetDatabase();
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}
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const Database &
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Partition::GetDatabaseOrThrow() const
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{
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return instance.GetDatabaseOrThrow();
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}
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void
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Partition::DatabaseModified(const Database &db) noexcept
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{
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playlist.DatabaseModified(db);
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EmitIdle(IDLE_DATABASE);
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}
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#endif
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void
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Partition::TagModified() noexcept
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{
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auto song = pc.LockReadTaggedSong();
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if (song)
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playlist.TagModified(std::move(*song));
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}
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void
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Partition::TagModified(const char *uri, const Tag &tag) noexcept
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{
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playlist.TagModified(uri, tag);
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}
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void
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Partition::SyncWithPlayer() noexcept
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{
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playlist.SyncWithPlayer(pc);
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/* TODO: invoke this function in batches, to let the hard disk
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spin down in between */
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PrefetchQueue();
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}
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void
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Partition::BorderPause() noexcept
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{
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playlist.BorderPause(pc);
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}
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void
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Partition::OnQueueModified() noexcept
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{
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EmitIdle(IDLE_PLAYLIST);
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}
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void
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Partition::OnQueueOptionsChanged() noexcept
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{
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EmitIdle(IDLE_OPTIONS);
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}
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void
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Partition::OnQueueSongStarted() noexcept
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{
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EmitIdle(IDLE_PLAYER);
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}
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void
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Partition::OnPlayerSync() noexcept
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{
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EmitGlobalEvent(SYNC_WITH_PLAYER);
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}
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void
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Partition::OnPlayerTagModified() noexcept
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{
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EmitGlobalEvent(TAG_MODIFIED);
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}
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void
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Partition::OnBorderPause() noexcept
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{
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EmitGlobalEvent(BORDER_PAUSE);
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}
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void
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Partition::OnMixerVolumeChanged(Mixer &, int) noexcept
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{
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InvalidateHardwareVolume();
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/* notify clients */
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EmitIdle(IDLE_MIXER);
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}
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void
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Partition::OnIdleMonitor(unsigned mask) noexcept
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{
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/* send "idle" notifications to all subscribed
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clients */
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for (auto &client : clients)
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client.IdleAdd(mask);
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if (mask & (IDLE_PLAYLIST|IDLE_PLAYER|IDLE_MIXER|IDLE_OUTPUT))
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instance.OnStateModified();
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}
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void
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Partition::OnGlobalEvent(unsigned mask) noexcept
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{
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if ((mask & SYNC_WITH_PLAYER) != 0)
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SyncWithPlayer();
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if ((mask & TAG_MODIFIED) != 0)
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TagModified();
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if ((mask & BORDER_PAUSE) != 0)
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BorderPause();
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}
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