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863 lines (770 loc) · 19.7 KB
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/***************************************************************************
* Copyright (C) 2008-2014 by Andrzej Rybczak *
* *
* 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 St, Fifth Floor, Boston, MA 02110-1301, USA. *
***************************************************************************/
#include <cassert>
#include <cstdlib>
#include <algorithm>
#include <map>
#include "charset.h"
#include "mpdpp.h"
MPD::Connection Mpd;
namespace {
const char *mpdDirectory(const std::string &directory)
{
// MPD <= 0.19 accepts "/" for a root directory whereas later
// versions do not, so provide a compatibility layer.
if (directory == "/")
return "";
else
return directory.c_str();
}
template <typename ObjectT, typename SourceT>
std::function<bool(typename MPD::Iterator<ObjectT>::State &)>
defaultFetcher(SourceT *(fetcher)(mpd_connection *))
{
return [fetcher](typename MPD::Iterator<ObjectT>::State &state) {
auto src = fetcher(state.connection());
if (src != nullptr)
{
state.setObject(src);
return true;
}
else
return false;
};
}
bool fetchItemSong(MPD::SongIterator::State &state)
{
auto src = mpd_recv_entity(state.connection());
while (src != nullptr && mpd_entity_get_type(src) != MPD_ENTITY_TYPE_SONG)
{
mpd_entity_free(src);
src = mpd_recv_entity(state.connection());
}
if (src != nullptr)
{
state.setObject(mpd_song_dup(mpd_entity_get_song(src)));
mpd_entity_free(src);
return true;
}
else
return false;
}
}
namespace MPD {
void checkConnectionErrors(mpd_connection *conn)
{
mpd_error code = mpd_connection_get_error(conn);
if (code != MPD_ERROR_SUCCESS)
{
std::string msg = mpd_connection_get_error_message(conn);
if (code == MPD_ERROR_SERVER)
{
mpd_server_error server_code = mpd_connection_get_server_error(conn);
bool clearable = mpd_connection_clear_error(conn);
throw ServerError(server_code, msg, clearable);
}
else
{
bool clearable = mpd_connection_clear_error(conn);
throw ClientError(code, msg, clearable);
}
}
}
Connection::Connection() : m_connection(nullptr),
m_command_list_active(false),
m_idle(false),
m_host("localhost"),
m_port(6600),
m_timeout(15)
{
}
void Connection::Connect()
{
assert(!m_connection);
try
{
m_connection.reset(mpd_connection_new(m_host.c_str(), m_port, m_timeout * 1000));
checkErrors();
if (!m_password.empty())
SendPassword();
m_fd = mpd_connection_get_fd(m_connection.get());
checkErrors();
}
catch (MPD::ClientError &e)
{
Disconnect();
throw e;
}
}
bool Connection::Connected() const
{
return m_connection.get() != nullptr;
}
void Connection::Disconnect()
{
m_connection = nullptr;
m_command_list_active = false;
m_idle = false;
}
unsigned Connection::Version() const
{
return m_connection ? mpd_connection_get_server_version(m_connection.get())[1] : 0;
}
void Connection::SetHostname(const std::string &host)
{
size_t at = host.find("@");
if (at != std::string::npos)
{
m_password = host.substr(0, at);
m_host = host.substr(at+1);
}
else
m_host = host;
}
void Connection::SendPassword()
{
assert(m_connection);
noidle();
assert(!m_command_list_active);
mpd_run_password(m_connection.get(), m_password.c_str());
checkErrors();
}
void Connection::idle()
{
checkConnection();
if (!m_idle)
{
mpd_send_idle(m_connection.get());
checkErrors();
}
m_idle = true;
}
int Connection::noidle()
{
checkConnection();
int flags = 0;
if (m_idle && mpd_send_noidle(m_connection.get()))
{
m_idle = false;
flags = mpd_recv_idle(m_connection.get(), true);
mpd_response_finish(m_connection.get());
checkErrors();
}
return flags;
}
Statistics Connection::getStatistics()
{
prechecks();
mpd_stats *stats = mpd_run_stats(m_connection.get());
checkErrors();
return Statistics(stats);
}
Status Connection::getStatus()
{
prechecks();
mpd_status *status = mpd_run_status(m_connection.get());
checkErrors();
return Status(status);
}
void Connection::UpdateDirectory(const std::string &path)
{
prechecksNoCommandsList();
mpd_run_update(m_connection.get(), path.c_str());
checkErrors();
}
void Connection::Play()
{
prechecksNoCommandsList();
mpd_run_play(m_connection.get());
checkErrors();
}
void Connection::Play(int pos)
{
prechecksNoCommandsList();
mpd_run_play_pos(m_connection.get(), pos);
checkErrors();
}
void Connection::PlayID(int id)
{
prechecksNoCommandsList();
mpd_run_play_id(m_connection.get(), id);
checkErrors();
}
void Connection::Pause(bool state)
{
prechecksNoCommandsList();
mpd_run_pause(m_connection.get(), state);
checkErrors();
}
void Connection::Toggle()
{
prechecksNoCommandsList();
mpd_run_toggle_pause(m_connection.get());
checkErrors();
}
void Connection::Stop()
{
prechecksNoCommandsList();
mpd_run_stop(m_connection.get());
checkErrors();
}
void Connection::Next()
{
prechecksNoCommandsList();
mpd_run_next(m_connection.get());
checkErrors();
}
void Connection::Prev()
{
prechecksNoCommandsList();
mpd_run_previous(m_connection.get());
checkErrors();
}
void Connection::Move(unsigned from, unsigned to)
{
prechecks();
if (m_command_list_active)
mpd_send_move(m_connection.get(), from, to);
else
{
mpd_run_move(m_connection.get(), from, to);
checkErrors();
}
}
void Connection::Swap(unsigned from, unsigned to)
{
prechecks();
if (m_command_list_active)
mpd_send_swap(m_connection.get(), from, to);
else
{
mpd_run_swap(m_connection.get(), from, to);
checkErrors();
}
}
void Connection::Seek(unsigned pos, unsigned where)
{
prechecksNoCommandsList();
mpd_run_seek_pos(m_connection.get(), pos, where);
checkErrors();
}
void Connection::Shuffle()
{
prechecksNoCommandsList();
mpd_run_shuffle(m_connection.get());
checkErrors();
}
void Connection::ShuffleRange(unsigned start, unsigned end)
{
prechecksNoCommandsList();
mpd_run_shuffle_range(m_connection.get(), start, end);
checkErrors();
}
void Connection::ClearMainPlaylist()
{
prechecksNoCommandsList();
mpd_run_clear(m_connection.get());
checkErrors();
}
void Connection::ClearPlaylist(const std::string &playlist)
{
prechecksNoCommandsList();
mpd_run_playlist_clear(m_connection.get(), playlist.c_str());
checkErrors();
}
void Connection::AddToPlaylist(const std::string &path, const Song &s)
{
AddToPlaylist(path, s.getURI());
}
void Connection::AddToPlaylist(const std::string &path, const std::string &file)
{
prechecks();
if (m_command_list_active)
mpd_send_playlist_add(m_connection.get(), path.c_str(), file.c_str());
else
{
mpd_run_playlist_add(m_connection.get(), path.c_str(), file.c_str());
checkErrors();
}
}
void Connection::PlaylistMove(const std::string &path, int from, int to)
{
prechecks();
if (m_command_list_active)
mpd_send_playlist_move(m_connection.get(), path.c_str(), from, to);
else
{
mpd_send_playlist_move(m_connection.get(), path.c_str(), from, to);
mpd_response_finish(m_connection.get());
checkErrors();
}
}
void Connection::Rename(const std::string &from, const std::string &to)
{
prechecksNoCommandsList();
mpd_run_rename(m_connection.get(), from.c_str(), to.c_str());
checkErrors();
}
SongIterator Connection::GetPlaylistChanges(unsigned version)
{
prechecksNoCommandsList();
mpd_send_queue_changes_meta(m_connection.get(), version);
checkErrors();
return SongIterator(m_connection.get(), defaultFetcher<Song>(mpd_recv_song));
}
Song Connection::GetCurrentSong()
{
prechecksNoCommandsList();
mpd_send_current_song(m_connection.get());
mpd_song *s = mpd_recv_song(m_connection.get());
mpd_response_finish(m_connection.get());
checkErrors();
// currentsong doesn't return error if there is no playing song.
if (s == nullptr)
return Song();
else
return Song(s);
}
Song Connection::GetSong(const std::string &path)
{
prechecksNoCommandsList();
mpd_send_list_all_meta(m_connection.get(), path.c_str());
mpd_song *s = mpd_recv_song(m_connection.get());
mpd_response_finish(m_connection.get());
checkErrors();
return Song(s);
}
SongIterator Connection::GetPlaylistContent(const std::string &path)
{
prechecksNoCommandsList();
mpd_send_list_playlist_meta(m_connection.get(), path.c_str());
SongIterator result(m_connection.get(), defaultFetcher<Song>(mpd_recv_song));
checkErrors();
return result;
}
SongIterator Connection::GetPlaylistContentNoInfo(const std::string &path)
{
prechecksNoCommandsList();
mpd_send_list_playlist(m_connection.get(), path.c_str());
SongIterator result(m_connection.get(), defaultFetcher<Song>(mpd_recv_song));
checkErrors();
return result;
}
StringIterator Connection::GetSupportedExtensions()
{
prechecksNoCommandsList();
mpd_send_command(m_connection.get(), "decoders", NULL);
checkErrors();
return StringIterator(m_connection.get(), [](StringIterator::State &state) {
auto src = mpd_recv_pair_named(state.connection(), "suffix");
if (src != nullptr)
{
state.setObject(src->value);
mpd_return_pair(state.connection(), src);
return true;
}
else
return false;
});
}
void Connection::SetRepeat(bool mode)
{
prechecksNoCommandsList();
mpd_run_repeat(m_connection.get(), mode);
checkErrors();
}
void Connection::SetRandom(bool mode)
{
prechecksNoCommandsList();
mpd_run_random(m_connection.get(), mode);
checkErrors();
}
void Connection::SetSingle(bool mode)
{
prechecksNoCommandsList();
mpd_run_single(m_connection.get(), mode);
checkErrors();
}
void Connection::SetConsume(bool mode)
{
prechecksNoCommandsList();
mpd_run_consume(m_connection.get(), mode);
checkErrors();
}
void Connection::SetVolume(unsigned vol)
{
prechecksNoCommandsList();
mpd_run_set_volume(m_connection.get(), vol);
checkErrors();
}
std::string Connection::GetReplayGainMode()
{
prechecksNoCommandsList();
mpd_send_command(m_connection.get(), "replay_gain_status", NULL);
std::string result;
if (mpd_pair *pair = mpd_recv_pair_named(m_connection.get(), "replay_gain_mode"))
{
result = pair->value;
mpd_return_pair(m_connection.get(), pair);
}
mpd_response_finish(m_connection.get());
checkErrors();
return result;
}
void Connection::SetReplayGainMode(ReplayGainMode mode)
{
prechecksNoCommandsList();
const char *rg_mode;
switch (mode)
{
case rgmOff:
rg_mode = "off";
break;
case rgmTrack:
rg_mode = "track";
break;
case rgmAlbum:
rg_mode = "album";
break;
default:
rg_mode = "";
break;
}
mpd_send_command(m_connection.get(), "replay_gain_mode", rg_mode, NULL);
mpd_response_finish(m_connection.get());
checkErrors();
}
void Connection::SetCrossfade(unsigned crossfade)
{
prechecksNoCommandsList();
mpd_run_crossfade(m_connection.get(), crossfade);
checkErrors();
}
void Connection::SetPriority(const Song &s, int prio)
{
prechecks();
if (m_command_list_active)
mpd_send_prio_id(m_connection.get(), prio, s.getID());
else
{
mpd_run_prio_id(m_connection.get(), prio, s.getID());
checkErrors();
}
}
int Connection::AddSong(const std::string &path, int pos)
{
prechecks();
int id;
if (pos < 0)
mpd_send_add_id(m_connection.get(), path.c_str());
else
mpd_send_add_id_to(m_connection.get(), path.c_str(), pos);
if (!m_command_list_active)
{
id = mpd_recv_song_id(m_connection.get());
mpd_response_finish(m_connection.get());
checkErrors();
}
else
id = 0;
return id;
}
int Connection::AddSong(const Song &s, int pos)
{
return AddSong((!s.isFromDatabase() ? "file://" : "") + s.getURI(), pos);
}
void Connection::Add(const std::string &path)
{
prechecks();
if (m_command_list_active)
mpd_send_add(m_connection.get(), path.c_str());
else
{
mpd_run_add(m_connection.get(), path.c_str());
checkErrors();
}
}
bool Connection::AddRandomTag(mpd_tag_type tag, size_t number)
{
std::vector<std::string> tags(
std::make_move_iterator(GetList(tag)),
std::make_move_iterator(StringIterator())
);
if (number > tags.size())
return false;
std::random_shuffle(tags.begin(), tags.end());
auto it = tags.begin();
for (size_t i = 0; i < number && it != tags.end(); ++i)
{
StartSearch(true);
AddSearch(tag, *it++);
std::vector<std::string> paths;
MPD::SongIterator s = CommitSearchSongs(), end;
for (; s != end; ++s)
paths.push_back(s->getURI());
StartCommandsList();
for (const auto &path : paths)
AddSong(path);
CommitCommandsList();
}
return true;
}
bool Connection::AddRandomSongs(size_t number)
{
prechecksNoCommandsList();
std::vector<std::string> files;
mpd_send_list_all(m_connection.get(), "/");
while (mpd_pair *item = mpd_recv_pair_named(m_connection.get(), "file"))
{
files.push_back(item->value);
mpd_return_pair(m_connection.get(), item);
}
mpd_response_finish(m_connection.get());
checkErrors();
if (number > files.size())
{
//if (itsErrorHandler)
// itsErrorHandler(this, 0, "Requested number of random songs is bigger than size of your library", itsErrorHandlerUserdata);
return false;
}
else
{
std::random_shuffle(files.begin(), files.end());
StartCommandsList();
auto it = files.begin();
for (size_t i = 0; i < number && it != files.end(); ++i, ++it)
AddSong(*it);
CommitCommandsList();
}
return true;
}
void Connection::Delete(unsigned pos)
{
prechecks();
mpd_send_delete(m_connection.get(), pos);
if (!m_command_list_active)
{
mpd_response_finish(m_connection.get());
checkErrors();
}
}
void Connection::PlaylistDelete(const std::string &playlist, unsigned pos)
{
prechecks();
mpd_send_playlist_delete(m_connection.get(), playlist.c_str(), pos);
if (!m_command_list_active)
{
mpd_response_finish(m_connection.get());
checkErrors();
}
}
void Connection::StartCommandsList()
{
prechecksNoCommandsList();
mpd_command_list_begin(m_connection.get(), true);
m_command_list_active = true;
checkErrors();
}
void Connection::CommitCommandsList()
{
prechecks();
assert(m_command_list_active);
mpd_command_list_end(m_connection.get());
mpd_response_finish(m_connection.get());
m_command_list_active = false;
checkErrors();
}
void Connection::DeletePlaylist(const std::string &name)
{
prechecksNoCommandsList();
mpd_run_rm(m_connection.get(), name.c_str());
checkErrors();
}
void Connection::LoadPlaylist(const std::string &name)
{
prechecksNoCommandsList();
mpd_run_load(m_connection.get(), name.c_str());
checkErrors();
}
void Connection::SavePlaylist(const std::string &name)
{
prechecksNoCommandsList();
mpd_send_save(m_connection.get(), name.c_str());
mpd_response_finish(m_connection.get());
checkErrors();
}
PlaylistIterator Connection::GetPlaylists()
{
prechecksNoCommandsList();
mpd_send_list_playlists(m_connection.get());
checkErrors();
return PlaylistIterator(m_connection.get(), defaultFetcher<Playlist>(mpd_recv_playlist));
}
StringIterator Connection::GetList(mpd_tag_type type)
{
prechecksNoCommandsList();
mpd_search_db_tags(m_connection.get(), type);
mpd_search_commit(m_connection.get());
checkErrors();
return StringIterator(m_connection.get(), [type](StringIterator::State &state) {
auto src = mpd_recv_pair_tag(state.connection(), type);
if (src != nullptr)
{
state.setObject(src->value);
mpd_return_pair(state.connection(), src);
return true;
}
else
return false;
});
}
void Connection::StartSearch(bool exact_match)
{
prechecksNoCommandsList();
mpd_search_db_songs(m_connection.get(), exact_match);
}
void Connection::StartFieldSearch(mpd_tag_type item)
{
prechecksNoCommandsList();
mpd_search_db_tags(m_connection.get(), item);
}
void Connection::AddSearch(mpd_tag_type item, const std::string &str) const
{
checkConnection();
mpd_search_add_tag_constraint(m_connection.get(), MPD_OPERATOR_DEFAULT, item, str.c_str());
}
void Connection::AddSearchAny(const std::string &str) const
{
checkConnection();
mpd_search_add_any_tag_constraint(m_connection.get(), MPD_OPERATOR_DEFAULT, str.c_str());
}
void Connection::AddSearchURI(const std::string &str) const
{
checkConnection();
mpd_search_add_uri_constraint(m_connection.get(), MPD_OPERATOR_DEFAULT, str.c_str());
}
SongIterator Connection::CommitSearchSongs()
{
prechecksNoCommandsList();
mpd_search_commit(m_connection.get());
checkErrors();
return SongIterator(m_connection.get(), defaultFetcher<Song>(mpd_recv_song));
}
ItemIterator Connection::GetDirectory(const std::string &directory)
{
prechecksNoCommandsList();
mpd_send_list_meta(m_connection.get(), mpdDirectory(directory));
checkErrors();
return ItemIterator(m_connection.get(), defaultFetcher<Item>(mpd_recv_entity));
}
SongIterator Connection::GetDirectoryRecursive(const std::string &directory)
{
prechecksNoCommandsList();
mpd_send_list_all_meta(m_connection.get(), mpdDirectory(directory));
checkErrors();
return SongIterator(m_connection.get(), fetchItemSong);
}
DirectoryIterator Connection::GetDirectories(const std::string &directory)
{
prechecksNoCommandsList();
mpd_send_list_meta(m_connection.get(), mpdDirectory(directory));
checkErrors();
return DirectoryIterator(m_connection.get(), defaultFetcher<Directory>(mpd_recv_directory));
}
SongIterator Connection::GetSongs(const std::string &directory)
{
prechecksNoCommandsList();
mpd_send_list_meta(m_connection.get(), mpdDirectory(directory));
checkErrors();
return SongIterator(m_connection.get(), defaultFetcher<Song>(mpd_recv_song));
}
OutputIterator Connection::GetOutputs()
{
prechecksNoCommandsList();
mpd_send_outputs(m_connection.get());
checkErrors();
return OutputIterator(m_connection.get(), defaultFetcher<Output>(mpd_recv_output));
}
void Connection::EnableOutput(int id)
{
prechecksNoCommandsList();
mpd_run_enable_output(m_connection.get(), id);
checkErrors();
}
void Connection::DisableOutput(int id)
{
prechecksNoCommandsList();
mpd_run_disable_output(m_connection.get(), id);
checkErrors();
}
StringIterator Connection::GetURLHandlers()
{
prechecksNoCommandsList();
mpd_send_list_url_schemes(m_connection.get());
checkErrors();
return StringIterator(m_connection.get(), [](StringIterator::State &state) {
auto src = mpd_recv_pair_named(state.connection(), "handler");
if (src != nullptr)
{
state.setObject(src->value);
mpd_return_pair(state.connection(), src);
return true;
}
else
return false;
});
}
StringIterator Connection::GetTagTypes()
{
prechecksNoCommandsList();
mpd_send_list_tag_types(m_connection.get());
checkErrors();
return StringIterator(m_connection.get(), [](StringIterator::State &state) {
auto src = mpd_recv_pair_named(state.connection(), "tagtype");
if (src != nullptr)
{
state.setObject(src->value);
mpd_return_pair(state.connection(), src);
return true;
}
else
return false;
});
}
void Connection::checkConnection() const
{
if (!m_connection)
throw ClientError(MPD_ERROR_STATE, "No active MPD connection", false);
}
void Connection::prechecks()
{
checkConnection();
noidle();
}
void Connection::prechecksNoCommandsList()
{
assert(!m_command_list_active);
prechecks();
}
void Connection::checkErrors() const
{
checkConnectionErrors(m_connection.get());
}
}