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/*
* 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 "config.h"
#include "Partition.hxx"
#include "Instance.hxx"
#include "Log.hxx"
#include "song/DetachedSong.hxx"
#include "mixer/Volume.hxx"
#include "IdleFlags.hxx"
#include "client/Listener.hxx"
#include "input/cache/Manager.hxx"
#include "util/Domain.hxx"
static constexpr Domain cache_domain("cache");
Partition::Partition(Instance &_instance,
const char *_name,
unsigned max_length,
unsigned buffer_chunks,
AudioFormat configured_audio_format,
const ReplayGainConfig &replay_gain_config) noexcept
:instance(_instance),
name(_name),
listener(new ClientListener(instance.event_loop, *this)),
global_events(instance.event_loop, BIND_THIS_METHOD(OnGlobalEvent)),
playlist(max_length, *this),
outputs(*this),
pc(*this, outputs,
instance.input_cache.get(),
buffer_chunks,
configured_audio_format, replay_gain_config)
{
UpdateEffectiveReplayGainMode();
}
Partition::~Partition() noexcept = default;
void
Partition::BeginShutdown() noexcept
{
pc.Kill();
listener.reset();
}
void
Partition::EmitIdle(unsigned mask) noexcept
{
instance.EmitIdle(mask);
}
static void
PrefetchSong(InputCacheManager &cache, const char *uri) noexcept
{
if (cache.Contains(uri))
return;
FormatDebug(cache_domain, "Prefetch '%s'", uri);
try {
cache.Prefetch(uri);
} catch (...) {
FormatError(std::current_exception(),
"Prefetch '%s' failed", uri);
}
}
static void
PrefetchSong(InputCacheManager &cache, const DetachedSong &song) noexcept
{
PrefetchSong(cache, song.GetURI());
}
inline void
Partition::PrefetchQueue() noexcept
{
if (!instance.input_cache)
return;
auto &cache = *instance.input_cache;
int next = playlist.GetNextPosition();
if (next >= 0)
PrefetchSong(cache, playlist.queue.Get(next));
// TODO: prefetch more songs
}
void
Partition::UpdateEffectiveReplayGainMode() noexcept
{
auto mode = replay_gain_mode;
if (mode == ReplayGainMode::AUTO)
mode = playlist.queue.random
? ReplayGainMode::TRACK
: ReplayGainMode::ALBUM;
pc.LockSetReplayGainMode(mode);
outputs.SetReplayGainMode(mode);
}
#ifdef ENABLE_DATABASE
const Database *
Partition::GetDatabase() const noexcept
{
return instance.GetDatabase();
}
const Database &
Partition::GetDatabaseOrThrow() const
{
return instance.GetDatabaseOrThrow();
}
void
Partition::DatabaseModified(const Database &db) noexcept
{
playlist.DatabaseModified(db);
EmitIdle(IDLE_DATABASE);
}
#endif
void
Partition::TagModified() noexcept
{
auto song = pc.LockReadTaggedSong();
if (song)
playlist.TagModified(std::move(*song));
}
void
Partition::TagModified(const char *uri, const Tag &tag) noexcept
{
playlist.TagModified(uri, tag);
}
void
Partition::SyncWithPlayer() noexcept
{
playlist.SyncWithPlayer(pc);
/* TODO: invoke this function in batches, to let the hard disk
spin down in between */
PrefetchQueue();
}
void
Partition::BorderPause() noexcept
{
playlist.BorderPause(pc);
}
void
Partition::OnQueueModified() noexcept
{
EmitIdle(IDLE_PLAYLIST);
}
void
Partition::OnQueueOptionsChanged() noexcept
{
EmitIdle(IDLE_OPTIONS);
}
void
Partition::OnQueueSongStarted() noexcept
{
EmitIdle(IDLE_PLAYER);
}
void
Partition::OnPlayerSync() noexcept
{
EmitGlobalEvent(SYNC_WITH_PLAYER);
}
void
Partition::OnPlayerTagModified() noexcept
{
EmitGlobalEvent(TAG_MODIFIED);
}
void
Partition::OnBorderPause() noexcept
{
EmitGlobalEvent(BORDER_PAUSE);
}
void
Partition::OnMixerVolumeChanged(Mixer &, int) noexcept
{
InvalidateHardwareVolume();
/* notify clients */
EmitIdle(IDLE_MIXER);
}
void
Partition::OnGlobalEvent(unsigned mask) noexcept
{
if ((mask & SYNC_WITH_PLAYER) != 0)
SyncWithPlayer();
if ((mask & TAG_MODIFIED) != 0)
TagModified();
if ((mask & BORDER_PAUSE) != 0)
BorderPause();
}
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