mpd/src/command/PlayerCommands.cxx

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/*
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* Copyright 2003-2021 The Music Player Daemon Project
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* 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 "PlayerCommands.hxx"
#include "Request.hxx"
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#include "queue/Playlist.hxx"
#include "PlaylistPrint.hxx"
#include "SingleMode.hxx"
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#include "client/Client.hxx"
#include "client/Response.hxx"
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#include "mixer/Volume.hxx"
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#include "Partition.hxx"
#include "Instance.hxx"
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#include "IdleFlags.hxx"
#include "util/StringBuffer.hxx"
#include "util/ScopeExit.hxx"
#include "util/Exception.hxx"
#include "util/Math.hxx"
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#ifdef ENABLE_DATABASE
#include "db/update/Service.hxx"
#endif
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#define COMMAND_STATUS_STATE "state"
#define COMMAND_STATUS_REPEAT "repeat"
#define COMMAND_STATUS_SINGLE "single"
#define COMMAND_STATUS_CONSUME "consume"
#define COMMAND_STATUS_RANDOM "random"
#define COMMAND_STATUS_PLAYLIST "playlist"
#define COMMAND_STATUS_PLAYLIST_LENGTH "playlistlength"
#define COMMAND_STATUS_SONG "song"
#define COMMAND_STATUS_SONGID "songid"
#define COMMAND_STATUS_NEXTSONG "nextsong"
#define COMMAND_STATUS_NEXTSONGID "nextsongid"
#define COMMAND_STATUS_TIME "time"
#define COMMAND_STATUS_BITRATE "bitrate"
#define COMMAND_STATUS_ERROR "error"
#define COMMAND_STATUS_CROSSFADE "xfade"
#define COMMAND_STATUS_MIXRAMPDB "mixrampdb"
#define COMMAND_STATUS_MIXRAMPDELAY "mixrampdelay"
#define COMMAND_STATUS_AUDIO "audio"
#define COMMAND_STATUS_UPDATING_DB "updating_db"
CommandResult
handle_play(Client &client, Request args, [[maybe_unused]] Response &r)
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{
int song = args.ParseOptional(0, -1);
client.GetPartition().PlayPosition(song);
return CommandResult::OK;
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}
CommandResult
handle_playid(Client &client, Request args, [[maybe_unused]] Response &r)
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{
int id = args.ParseOptional(0, -1);
client.GetPartition().PlayId(id);
return CommandResult::OK;
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}
CommandResult
handle_stop(Client &client, [[maybe_unused]] Request args, [[maybe_unused]] Response &r)
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{
client.GetPartition().Stop();
return CommandResult::OK;
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}
CommandResult
handle_currentsong(Client &client, [[maybe_unused]] Request args, Response &r)
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{
playlist_print_current(r, client.GetPlaylist());
return CommandResult::OK;
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}
CommandResult
handle_pause(Client &client, Request args, [[maybe_unused]] Response &r)
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{
auto &pc = client.GetPlayerControl();
if (!args.empty()) {
bool pause_flag = args.ParseBool(0);
pc.LockSetPause(pause_flag);
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} else
pc.LockPause();
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return CommandResult::OK;
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}
CommandResult
handle_status(Client &client, [[maybe_unused]] Request args, Response &r)
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{
auto &partition = client.GetPartition();
auto &pc = partition.pc;
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const char *state = nullptr;
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int song;
const auto player_status = pc.LockGetStatus();
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switch (player_status.state) {
case PlayerState::STOP:
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state = "stop";
break;
case PlayerState::PAUSE:
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state = "pause";
break;
case PlayerState::PLAY:
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state = "play";
break;
}
const auto &playlist = partition.playlist;
const auto volume = volume_level_get(partition.outputs);
if (volume >= 0)
r.Format("volume: %i\n", volume);
r.Format(COMMAND_STATUS_REPEAT ": %i\n"
COMMAND_STATUS_RANDOM ": %i\n"
COMMAND_STATUS_SINGLE ": %s\n"
COMMAND_STATUS_CONSUME ": %i\n"
"partition: %s\n"
COMMAND_STATUS_PLAYLIST ": %li\n"
COMMAND_STATUS_PLAYLIST_LENGTH ": %i\n"
COMMAND_STATUS_MIXRAMPDB ": %f\n"
COMMAND_STATUS_STATE ": %s\n",
playlist.GetRepeat(),
playlist.GetRandom(),
SingleToString(playlist.GetSingle()),
playlist.GetConsume(),
partition.name.c_str(),
(unsigned long)playlist.GetVersion(),
playlist.GetLength(),
(double)pc.GetMixRampDb(),
state);
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if (pc.GetCrossFade() > FloatDuration::zero())
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r.Format(COMMAND_STATUS_CROSSFADE ": %lu\n",
lround(pc.GetCrossFade().count()));
if (pc.GetMixRampDelay() > FloatDuration::zero())
r.Format(COMMAND_STATUS_MIXRAMPDELAY ": %f\n",
pc.GetMixRampDelay().count());
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song = playlist.GetCurrentPosition();
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if (song >= 0) {
r.Format(COMMAND_STATUS_SONG ": %i\n"
COMMAND_STATUS_SONGID ": %u\n",
song, playlist.PositionToId(song));
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}
if (player_status.state != PlayerState::STOP) {
r.Format(COMMAND_STATUS_TIME ": %i:%i\n"
"elapsed: %1.3f\n"
COMMAND_STATUS_BITRATE ": %u\n",
player_status.elapsed_time.RoundS(),
player_status.total_time.IsNegative()
? 0U
: unsigned(player_status.total_time.RoundS()),
player_status.elapsed_time.ToDoubleS(),
player_status.bit_rate);
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if (!player_status.total_time.IsNegative())
r.Format("duration: %1.3f\n",
player_status.total_time.ToDoubleS());
if (player_status.audio_format.IsDefined())
r.Format(COMMAND_STATUS_AUDIO ": %s\n",
ToString(player_status.audio_format).c_str());
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}
#ifdef ENABLE_DATABASE
const UpdateService *update_service = partition.instance.update;
unsigned updateJobId = update_service != nullptr
? update_service->GetId()
: 0;
if (updateJobId != 0) {
r.Format(COMMAND_STATUS_UPDATING_DB ": %i\n",
updateJobId);
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}
#endif
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try {
pc.LockCheckRethrowError();
} catch (...) {
r.Format(COMMAND_STATUS_ERROR ": %s\n",
GetFullMessage(std::current_exception()).c_str());
}
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song = playlist.GetNextPosition();
if (song >= 0)
r.Format(COMMAND_STATUS_NEXTSONG ": %i\n"
COMMAND_STATUS_NEXTSONGID ": %u\n",
song, playlist.PositionToId(song));
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return CommandResult::OK;
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}
CommandResult
handle_next(Client &client, [[maybe_unused]] Request args, [[maybe_unused]] Response &r)
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{
playlist &playlist = client.GetPlaylist();
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/* single mode is not considered when this is user who
* wants to change song. */
const SingleMode single = playlist.queue.single;
playlist.queue.single = SingleMode::OFF;
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AtScopeExit(&playlist, single) {
playlist.queue.single = single;
};
client.GetPartition().PlayNext();
return CommandResult::OK;
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}
CommandResult
handle_previous(Client &client, [[maybe_unused]] Request args,
[[maybe_unused]] Response &r)
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{
client.GetPartition().PlayPrevious();
return CommandResult::OK;
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}
CommandResult
handle_repeat(Client &client, Request args, [[maybe_unused]] Response &r)
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{
bool status = args.ParseBool(0);
client.GetPartition().SetRepeat(status);
return CommandResult::OK;
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}
CommandResult
handle_single(Client &client, Request args, [[maybe_unused]] Response &r)
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{
auto new_mode = SingleFromString(args.front());
client.GetPartition().SetSingle(new_mode);
return CommandResult::OK;
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}
CommandResult
handle_consume(Client &client, Request args, [[maybe_unused]] Response &r)
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{
bool status = args.ParseBool(0);
client.GetPartition().SetConsume(status);
return CommandResult::OK;
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}
CommandResult
handle_random(Client &client, Request args, [[maybe_unused]] Response &r)
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{
bool status = args.ParseBool(0);
auto &partition = client.GetPartition();
partition.SetRandom(status);
partition.UpdateEffectiveReplayGainMode();
return CommandResult::OK;
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}
CommandResult
handle_clearerror(Client &client, [[maybe_unused]] Request args,
[[maybe_unused]] Response &r)
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{
client.GetPlayerControl().LockClearError();
return CommandResult::OK;
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}
CommandResult
handle_seek(Client &client, Request args, [[maybe_unused]] Response &r)
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{
unsigned song = args.ParseUnsigned(0);
SongTime seek_time = args.ParseSongTime(1);
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client.GetPartition().SeekSongPosition(song, seek_time);
return CommandResult::OK;
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}
CommandResult
handle_seekid(Client &client, Request args, [[maybe_unused]] Response &r)
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{
unsigned id = args.ParseUnsigned(0);
SongTime seek_time = args.ParseSongTime(1);
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client.GetPartition().SeekSongId(id, seek_time);
return CommandResult::OK;
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}
CommandResult
handle_seekcur(Client &client, Request args, [[maybe_unused]] Response &r)
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{
const char *p = args.front();
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bool relative = *p == '+' || *p == '-';
SignedSongTime seek_time = ParseCommandArgSignedSongTime(p);
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client.GetPartition().SeekCurrent(seek_time, relative);
return CommandResult::OK;
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}
CommandResult
handle_crossfade(Client &client, Request args, [[maybe_unused]] Response &r)
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{
FloatDuration duration{args.ParseUnsigned(0)};
client.GetPlayerControl().SetCrossFade(duration);
return CommandResult::OK;
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}
CommandResult
handle_mixrampdb(Client &client, Request args, [[maybe_unused]] Response &r)
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{
float db = args.ParseFloat(0);
client.GetPlayerControl().SetMixRampDb(db);
return CommandResult::OK;
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}
CommandResult
handle_mixrampdelay(Client &client, Request args, [[maybe_unused]] Response &r)
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{
FloatDuration delay_secs{args.ParseFloat(0)};
client.GetPlayerControl().SetMixRampDelay(delay_secs);
return CommandResult::OK;
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}
CommandResult
handle_replay_gain_mode(Client &client, Request args, Response &)
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{
auto new_mode = FromString(args.front());
auto &partition = client.GetPartition();
partition.SetReplayGainMode(new_mode);
partition.EmitIdle(IDLE_OPTIONS);
return CommandResult::OK;
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}
CommandResult
handle_replay_gain_status(Client &client, [[maybe_unused]] Request args,
Response &r)
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{
r.Format("replay_gain_mode: %s\n",
ToString(client.GetPartition().replay_gain_mode));
return CommandResult::OK;
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}