Files
ncmpcpp/src/mpdpp.cpp
2008-12-12 22:50:22 +01:00

897 lines
20 KiB
C++

/***************************************************************************
* Copyright (C) 2008 by Andrzej Rybczak *
* electricityispower@gmail.com *
* *
* 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., *
* 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *
***************************************************************************/
#include "mpdpp.h"
using namespace MPD;
using std::string;
const char *playlist_max_message = "playlist is at the max size";
Connection::Connection() : isConnected(0),
itsErrorCode(0),
itsMaxPlaylistLength(-1),
itsHost("localhost"),
itsPort(6600),
itsTimeout(15),
itsUpdater(0),
itsErrorHandler(0)
{
itsConnection = 0;
itsCurrentStats = 0;
itsOldStats = 0;
itsCurrentStatus = 0;
itsOldStatus = 0;
}
Connection::~Connection()
{
if (itsConnection)
mpd_closeConnection(itsConnection);
if (itsOldStats)
mpd_freeStats(itsOldStats);
if (itsCurrentStats)
mpd_freeStats(itsCurrentStats);
if (itsOldStatus)
mpd_freeStatus(itsOldStatus);
if (itsCurrentStatus)
mpd_freeStatus(itsCurrentStatus);
ClearQueue();
}
bool Connection::Connect()
{
if (!isConnected && !itsConnection)
{
itsConnection = mpd_newConnection(itsHost.c_str(), itsPort, itsTimeout);
isConnected = 1;
if (CheckForErrors())
return false;
if (!itsPassword.empty())
SendPassword();
return !CheckForErrors();
}
else
return true;
}
bool Connection::Connected() const
{
return isConnected;
}
void Connection::Disconnect()
{
if (itsConnection)
mpd_closeConnection(itsConnection);
if (itsOldStats)
mpd_freeStats(itsOldStats);
if (itsCurrentStats)
mpd_freeStats(itsCurrentStats);
if (itsOldStatus)
mpd_freeStatus(itsOldStatus);
if (itsCurrentStatus)
mpd_freeStatus(itsCurrentStatus);
itsConnection = 0;
itsCurrentStats = 0;
itsOldStats = 0;
itsCurrentStatus = 0;
itsOldStatus = 0;
isConnected = 0;
itsMaxPlaylistLength = -1;
ClearQueue();
}
void Connection::SetHostname(const string &host)
{
size_t at = host.find("@");
if (at != string::npos)
{
itsPassword = host.substr(0, at);
itsHost = host.substr(at+1);
}
else
itsHost = host;
}
void Connection::SendPassword() const
{
mpd_sendPasswordCommand(itsConnection, itsPassword.c_str());
mpd_finishCommand(itsConnection);
}
void Connection::SetStatusUpdater(StatusUpdater updater, void *data)
{
itsUpdater = updater;
itsStatusUpdaterUserdata = data;
}
void Connection::SetErrorHandler(ErrorHandler handler, void *data)
{
itsErrorHandler = handler;
itsErrorHandlerUserdata = data;
}
void Connection::UpdateStatus()
{
CheckForErrors();
if (itsOldStatus)
mpd_freeStatus(itsOldStatus);
itsOldStatus = itsCurrentStatus;
mpd_sendStatusCommand(itsConnection);
itsCurrentStatus = mpd_getStatus(itsConnection);
if (!itsMaxPlaylistLength)
itsMaxPlaylistLength = GetPlaylistLength();
if (CheckForErrors())
return;
if (itsOldStats)
mpd_freeStats(itsOldStats);
itsOldStats = itsCurrentStats;
mpd_sendStatsCommand(itsConnection);
itsCurrentStats = mpd_getStats(itsConnection);
if (itsCurrentStatus && itsCurrentStats && itsUpdater)
{
if (itsOldStatus == NULL || itsOldStats == NULL)
{
itsChanges.Playlist = 1;
itsChanges.SongID = 1;
itsChanges.Database = 1;
itsChanges.DBUpdating = 1;
itsChanges.Volume = 1;
itsChanges.ElapsedTime = 1;
itsChanges.Crossfade = 1;
itsChanges.Random = 1;
itsChanges.Repeat = 1;
itsChanges.PlayerState = 1;
}
else
{
itsChanges.Playlist = itsOldStatus->playlist != itsCurrentStatus->playlist;
itsChanges.SongID = itsOldStatus->songid != itsCurrentStatus->songid;
itsChanges.Database = itsOldStats->dbUpdateTime != itsCurrentStats->dbUpdateTime;
itsChanges.DBUpdating = itsOldStatus->updatingDb != itsCurrentStatus->updatingDb;
itsChanges.Volume = itsOldStatus->volume != itsCurrentStatus->volume;
itsChanges.ElapsedTime = itsOldStatus->elapsedTime != itsCurrentStatus->elapsedTime;
itsChanges.Crossfade = itsOldStatus->crossfade != itsCurrentStatus->crossfade;
itsChanges.Random = itsOldStatus->random != itsCurrentStatus->random;
itsChanges.Repeat = itsOldStatus->repeat != itsCurrentStatus->repeat;
itsChanges.PlayerState = itsOldStatus->state != itsCurrentStatus->state;
}
itsUpdater(this, itsChanges, itsErrorHandlerUserdata);
}
}
void Connection::UpdateDirectory(const string &path) const
{
if (isConnected)
{
mpd_sendUpdateCommand(itsConnection, (char *) path.c_str());
mpd_finishCommand(itsConnection);
}
}
void Connection::Execute(const string &command) const
{
if (isConnected)
{
mpd_executeCommand(itsConnection, command.c_str());
mpd_finishCommand(itsConnection);
}
}
void Connection::Play() const
{
if (isConnected)
PlayID(-1);
}
void Connection::Play(int pos) const
{
if (isConnected)
{
mpd_sendPlayCommand(itsConnection, pos);
mpd_finishCommand(itsConnection);
}
}
void Connection::PlayID(int id) const
{
if (isConnected)
{
mpd_sendPlayIdCommand(itsConnection, id);
mpd_finishCommand(itsConnection);
}
}
void Connection::Pause() const
{
if (isConnected)
{
mpd_sendPauseCommand(itsConnection, itsCurrentStatus->state != psPause);
mpd_finishCommand(itsConnection);
}
}
void Connection::Stop() const
{
if (isConnected)
{
mpd_sendStopCommand(itsConnection);
mpd_finishCommand(itsConnection);
}
}
void Connection::Next() const
{
if (isConnected)
{
mpd_sendNextCommand(itsConnection);
mpd_finishCommand(itsConnection);
}
}
void Connection::Prev() const
{
if (isConnected)
{
mpd_sendPrevCommand(itsConnection);
mpd_finishCommand(itsConnection);
}
}
void Connection::Move(int from, int to) const
{
if (isConnected)
{
mpd_sendMoveCommand(itsConnection, from, to);
mpd_finishCommand(itsConnection);
}
}
void Connection::Seek(int where) const
{
if (isConnected)
{
mpd_sendSeekCommand(itsConnection, itsCurrentStatus->song, where);
mpd_finishCommand(itsConnection);
}
}
void Connection::Shuffle() const
{
if (isConnected)
{
mpd_sendShuffleCommand(itsConnection);
mpd_finishCommand(itsConnection);
}
}
void Connection::ClearPlaylist() const
{
if (isConnected)
{
mpd_sendClearCommand(itsConnection);
mpd_finishCommand(itsConnection);
}
}
void Connection::AddToPlaylist(const string &path, const Song &s) const
{
if (!s.Empty())
AddToPlaylist(path, s.GetFile());
}
void Connection::AddToPlaylist(const string &path, const string &file) const
{
if (isConnected)
{
mpd_sendPlaylistAddCommand(itsConnection, (char *) path.c_str(), (char *) file.c_str());
mpd_finishCommand(itsConnection);
}
}
void Connection::Move(const string &path, int from, int to) const
{
if (isConnected)
{
mpd_sendPlaylistMoveCommand(itsConnection, (char *) path.c_str(), from, to);
mpd_finishCommand(itsConnection);
}
}
void Connection::Rename(const string &from, const string &to) const
{
if (isConnected)
{
mpd_sendRenameCommand(itsConnection, from.c_str(), to.c_str());
mpd_finishCommand(itsConnection);
}
}
void Connection::GetPlaylistChanges(long long id, SongList &v) const
{
if (isConnected)
{
if (id < 0)
{
id = 0;
v.reserve(GetPlaylistLength());
}
mpd_sendPlChangesCommand(itsConnection, id);
mpd_InfoEntity *item = NULL;
while ((item = mpd_getNextInfoEntity(itsConnection)) != NULL)
{
if (item->type == MPD_INFO_ENTITY_TYPE_SONG)
{
Song *s = new Song(item->info.song, 1);
item->info.song = 0;
v.push_back(s);
}
mpd_freeInfoEntity(item);
}
mpd_finishCommand(itsConnection);
}
}
Song Connection::GetSong(const string &path) const
{
if (isConnected)
{
mpd_sendListallInfoCommand(itsConnection, path.c_str());
mpd_InfoEntity *item = NULL;
item = mpd_getNextInfoEntity(itsConnection);
Song result = item->info.song;
item->info.song = 0;
mpd_freeInfoEntity(item);
mpd_finishCommand(itsConnection);
return result;
}
else
return Song();
}
int Connection::GetCurrentSongPos() const
{
return isConnected && itsCurrentStatus ? (itsCurrentStatus->state == psPlay || itsCurrentStatus->state == psPause ? itsCurrentStatus->song : -1) : -1;
}
Song Connection::GetCurrentSong() const
{
if (isConnected && (GetState() == psPlay || GetState() == psPause))
{
mpd_sendCurrentSongCommand(itsConnection);
mpd_InfoEntity *item = NULL;
item = mpd_getNextInfoEntity(itsConnection);
if (item)
{
Song result = item->info.song;
item->info.song = 0;
mpd_freeInfoEntity(item);
return result;
}
else
return Song();
mpd_finishCommand(itsConnection);
}
else
return Song();
}
void Connection::GetPlaylistContent(const string &path, SongList &v) const
{
if (isConnected)
{
mpd_sendListPlaylistInfoCommand(itsConnection, (char *) path.c_str());
mpd_InfoEntity *item = NULL;
while ((item = mpd_getNextInfoEntity(itsConnection)) != NULL)
{
if (item->type == MPD_INFO_ENTITY_TYPE_SONG)
{
Song *s = new Song(item->info.song);
item->info.song = 0;
v.push_back(s);
}
mpd_freeInfoEntity(item);
}
mpd_finishCommand(itsConnection);
}
}
void Connection::SetRepeat(bool mode) const
{
if (isConnected)
{
mpd_sendRepeatCommand(itsConnection, mode);
mpd_finishCommand(itsConnection);
}
}
void Connection::SetRandom(bool mode) const
{
if (isConnected)
{
mpd_sendRandomCommand(itsConnection, mode);
mpd_finishCommand(itsConnection);
}
}
void Connection::SetVolume(int vol) const
{
if (isConnected)
{
mpd_sendSetvolCommand(itsConnection, vol);
mpd_finishCommand(itsConnection);
}
}
void Connection::SetCrossfade(int crossfade) const
{
if (isConnected)
{
mpd_sendCrossfadeCommand(itsConnection, crossfade);
mpd_finishCommand(itsConnection);
}
}
int Connection::AddSong(const string &path)
{
int id = -1;
if (isConnected)
{
if (GetPlaylistLength() < itsMaxPlaylistLength)
{
id = mpd_sendAddIdCommand(itsConnection, path.c_str());
mpd_finishCommand(itsConnection);
UpdateStatus();
}
else
if (itsErrorHandler)
itsErrorHandler(this, MPD_ACK_ERROR_PLAYLIST_MAX, playlist_max_message, NULL);
}
return id;
}
int Connection::AddSong(const Song &s)
{
return !s.Empty() ? (s.IsFromDB() ? AddSong(s.GetFile()) : AddSong("file://" + string(s.GetFile()))) : -1;
}
void Connection::QueueAddSong(const string &path)
{
if (isConnected && GetPlaylistLength() < itsMaxPlaylistLength)
{
QueueCommand *q = new QueueCommand;
q->type = qctAdd;
q->item_path = path;
itsQueue.push_back(q);
}
}
void Connection::QueueAddSong(const Song &s)
{
if (!s.Empty())
QueueAddSong(s.GetFile());
}
void Connection::QueueAddToPlaylist(const string &playlist, const string &path)
{
if (isConnected)
{
QueueCommand *q = new QueueCommand;
q->type = qctAddToPlaylist;
q->playlist_path = playlist;
q->item_path = path;
itsQueue.push_back(q);
}
}
void Connection::QueueAddToPlaylist(const string &playlist, const Song &s)
{
if (!s.Empty())
QueueAddToPlaylist(playlist, s.GetFile());
}
void Connection::QueueDeleteSong(int id)
{
if (isConnected)
{
QueueCommand *q = new QueueCommand;
q->type = qctDelete;
q->id = id;
itsQueue.push_back(q);
}
}
void Connection::QueueDeleteSongId(int id)
{
if (isConnected)
{
QueueCommand *q = new QueueCommand;
q->type = qctDeleteID;
q->id = id;
itsQueue.push_back(q);
}
}
void Connection::QueueMove(int from, int to)
{
if (isConnected)
{
QueueCommand *q = new QueueCommand;
q->type = qctMove;
q->id = from;
q->id2 = to;
itsQueue.push_back(q);
}
}
void Connection::QueueMove(const string &playlist, int from, int to)
{
if (isConnected)
{
QueueCommand *q = new QueueCommand;
q->type = qctPlaylistMove;
q->playlist_path = playlist;
q->id = from;
q->id2 = to;
itsQueue.push_back(q);
}
}
void Connection::QueueDeleteFromPlaylist(const string &playlist, int pos)
{
if (isConnected)
{
QueueCommand *q = new QueueCommand;
q->type = qctDeleteFromPlaylist;
q->playlist_path = playlist;
q->id = pos;
itsQueue.push_back(q);
}
}
bool Connection::CommitQueue()
{
bool retval = false;
if (isConnected)
{
mpd_sendCommandListBegin(itsConnection);
for (std::vector<QueueCommand *>::const_iterator it = itsQueue.begin(); it != itsQueue.end(); it++)
{
switch ((*it)->type)
{
case qctAdd:
mpd_sendAddCommand(itsConnection, (*it)->item_path.c_str());
break;
case qctAddToPlaylist:
mpd_sendPlaylistAddCommand(itsConnection, (char *) (*it)->playlist_path.c_str(), (char *) (*it)->item_path.c_str());
break;
case qctDelete:
mpd_sendDeleteCommand(itsConnection, (*it)->id);
break;
case qctDeleteID:
mpd_sendDeleteIdCommand(itsConnection, (*it)->id);
break;
case qctMove:
mpd_sendMoveCommand(itsConnection, (*it)->id, (*it)->id2);
break;
case qctPlaylistMove:
mpd_sendPlaylistMoveCommand(itsConnection, (char *) (*it)->playlist_path.c_str(), (*it)->id, (*it)->id2);
break;
case qctDeleteFromPlaylist:
mpd_sendPlaylistDeleteCommand(itsConnection, (char *) (*it)->playlist_path.c_str(), (*it)->id);
break;
}
}
mpd_sendCommandListEnd(itsConnection);
mpd_finishCommand(itsConnection);
UpdateStatus();
if (GetPlaylistLength() == itsMaxPlaylistLength && itsErrorHandler)
itsErrorHandler(this, MPD_ACK_ERROR_PLAYLIST_MAX, playlist_max_message, NULL);
retval = !itsQueue.empty();
}
ClearQueue();
return retval;
}
void Connection::DeletePlaylist(const string &name) const
{
if (isConnected)
{
mpd_sendRmCommand(itsConnection, name.c_str());
mpd_finishCommand(itsConnection);
}
}
bool Connection::SavePlaylist(const string &name) const
{
if (isConnected)
{
mpd_sendSaveCommand(itsConnection, name.c_str());
mpd_finishCommand(itsConnection);
return !(itsConnection->error == MPD_ERROR_ACK && itsConnection->errorCode == MPD_ACK_ERROR_EXIST);
}
else
return false;
}
void Connection::GetPlaylists(TagList &v) const
{
if (isConnected)
{
ItemList list;
GetDirectory("/", list);
for (ItemList::const_iterator it = list.begin(); it != list.end(); it++)
{
if (it->type == itPlaylist)
v.push_back(it->name);
}
FreeItemList(list);
}
}
void Connection::GetList(TagList &v, mpd_TagItems type) const
{
if (isConnected)
{
mpd_sendListCommand(itsConnection, type, NULL);
char *item;
while ((item = mpd_getNextTag(itsConnection, type)) != NULL)
{
v.push_back(item);
delete [] item;
}
mpd_finishCommand(itsConnection);
}
}
void Connection::GetArtists(TagList &v) const
{
if (isConnected)
{
mpd_sendListCommand(itsConnection, MPD_TABLE_ARTIST, NULL);
char *item;
while ((item = mpd_getNextArtist(itsConnection)) != NULL)
{
v.push_back(item);
delete [] item;
}
mpd_finishCommand(itsConnection);
}
}
void Connection::GetAlbums(string artist, TagList &v) const
{
if (isConnected)
{
mpd_sendListCommand(itsConnection, MPD_TABLE_ALBUM, artist.empty() ? NULL : artist.c_str());
char *item;
while ((item = mpd_getNextAlbum(itsConnection)) != NULL)
{
v.push_back(item);
delete [] item;
}
mpd_finishCommand(itsConnection);
}
}
void Connection::StartSearch(bool exact_match) const
{
if (isConnected)
mpd_startSearch(itsConnection, exact_match);
}
void Connection::StartFieldSearch(mpd_TagItems item)
{
if (isConnected)
{
itsSearchedField = item;
mpd_startFieldSearch(itsConnection, item);
}
}
void Connection::AddSearch(mpd_TagItems item, const string &str) const
{
if (isConnected)
mpd_addConstraintSearch(itsConnection, item, str.c_str());
}
void Connection::CommitSearch(SongList &v) const
{
if (isConnected)
{
mpd_commitSearch(itsConnection);
mpd_InfoEntity *item = NULL;
while ((item = mpd_getNextInfoEntity(itsConnection)) != NULL)
{
if (item->type == MPD_INFO_ENTITY_TYPE_SONG)
{
Song *s = new Song(item->info.song);
item->info.song = 0;
v.push_back(s);
}
mpd_freeInfoEntity(item);
}
mpd_finishCommand(itsConnection);
}
}
void Connection::CommitSearch(TagList &v) const
{
if (isConnected)
{
mpd_commitSearch(itsConnection);
char *tag = NULL;
while ((tag = mpd_getNextTag(itsConnection, itsSearchedField)) != NULL)
{
string s_tag = tag;
if (v.empty() || v.back() != s_tag)
v.push_back(s_tag);
delete [] tag;
}
mpd_finishCommand(itsConnection);
}
}
void Connection::GetDirectory(const string &path, ItemList &v) const
{
if (isConnected)
{
mpd_InfoEntity *item = NULL;
mpd_sendLsInfoCommand(itsConnection, path.c_str());
while ((item = mpd_getNextInfoEntity(itsConnection)) != NULL)
{
Item i;
switch (item->type)
{
case MPD_INFO_ENTITY_TYPE_DIRECTORY:
i.name = item->info.directory->path;
i.type = itDirectory;
break;
case MPD_INFO_ENTITY_TYPE_SONG:
i.song = new Song(item->info.song);
item->info.song = 0;
i.type = itSong;
break;
case MPD_INFO_ENTITY_TYPE_PLAYLISTFILE:
i.name = item->info.playlistFile->path;
i.type = itPlaylist;
break;
}
v.push_back(i);
mpd_freeInfoEntity(item);
}
mpd_finishCommand(itsConnection);
}
}
void Connection::GetDirectoryRecursive(const string &path, SongList &v) const
{
if (isConnected)
{
mpd_InfoEntity *item = NULL;
mpd_sendListallInfoCommand(itsConnection, path.c_str());
while ((item = mpd_getNextInfoEntity(itsConnection)) != NULL)
{
if (item->type == MPD_INFO_ENTITY_TYPE_SONG)
{
Song *s = new Song(item->info.song);
item->info.song = 0;
v.push_back(s);
}
mpd_freeInfoEntity(item);
}
mpd_finishCommand(itsConnection);
}
}
void Connection::GetSongs(const string &path, SongList &v) const
{
if (isConnected)
{
mpd_InfoEntity *item = NULL;
mpd_sendLsInfoCommand(itsConnection, path.c_str());
while ((item = mpd_getNextInfoEntity(itsConnection)) != NULL)
{
if (item->type == MPD_INFO_ENTITY_TYPE_SONG)
{
Song *s = new Song(item->info.song);
item->info.song = 0;
v.push_back(s);
}
mpd_freeInfoEntity(item);
}
mpd_finishCommand(itsConnection);
}
}
void Connection::GetDirectories(const string &path, TagList &v) const
{
if (isConnected)
{
mpd_InfoEntity *item = NULL;
mpd_sendLsInfoCommand(itsConnection, path.c_str());
while ((item = mpd_getNextInfoEntity(itsConnection)) != NULL)
{
if (item->type == MPD_INFO_ENTITY_TYPE_DIRECTORY)
v.push_back(item->info.directory->path);
mpd_freeInfoEntity(item);
}
mpd_finishCommand(itsConnection);
}
}
int Connection::CheckForErrors()
{
itsErrorCode = 0;
if (itsConnection->error)
{
if (itsConnection->error == MPD_ERROR_ACK)
{
// this is to avoid setting too small max size as we check it before fetching current status
// setting real max playlist length is in UpdateStatus()
if (itsConnection->errorCode == MPD_ACK_ERROR_PLAYLIST_MAX && itsMaxPlaylistLength == size_t(-1))
itsMaxPlaylistLength = 0;
if (itsErrorHandler)
itsErrorHandler(this, itsConnection->errorCode, itsConnection->errorStr, itsErrorHandlerUserdata);
itsErrorCode = itsConnection->errorCode;
}
else
{
isConnected = 0; // the rest of errors are fatal to connection
if (itsErrorHandler)
itsErrorHandler(this, itsConnection->error, itsConnection->errorStr, itsErrorHandlerUserdata);
itsErrorCode = itsConnection->error;
}
itsErrorMessage = itsConnection->errorStr;
mpd_clearError(itsConnection);
}
return itsErrorCode;
}
void Connection::ClearQueue()
{
for (std::vector<QueueCommand *>::iterator it = itsQueue.begin(); it != itsQueue.end(); it++)
delete *it;
itsQueue.clear();
}
void MPD::FreeSongList(SongList &l)
{
for (SongList::iterator i = l.begin(); i != l.end(); i++)
delete *i;
l.clear();
}
void MPD::FreeItemList(ItemList &l)
{
for (ItemList::iterator i = l.begin(); i != l.end(); i++)
delete i->song;
l.clear();
}