/* Copyright (C) 2014 J.F.Dockes
* 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 "mpdcli.hxx"
#include <mpd/client.h>
#include <stddef.h> // for NULL
#include <unistd.h>
#include <iostream> // for endl, etc
#include "libupnpp/log.hxx" // for LOGDEB, LOGERR, LOGINF
struct mpd_status;
using namespace std;
using namespace UPnPP;
#define M_CONN ((struct mpd_connection *)m_conn)
MPDCli::MPDCli(const string& host, int port, const string& pass,
const string& onstart, const string& onstop,
const string& onvolumechange)
: m_conn(0), m_ok(false), m_premutevolume(0), m_cachedvolume(50),
m_host(host), m_port(port), m_password(pass), m_onstart(onstart),
m_onstop(onstop), m_onvolumechange(onvolumechange), m_lastinsertid(-1),
m_lastinsertpos(-1), m_lastinsertqvers(-1)
{
regcomp(&m_tpuexpr, "^[[:alpha:]]+://.+", REG_EXTENDED|REG_NOSUB);
if (!openconn()) {
return;
}
m_have_addtagid = checkForCommand("addtagid");
m_ok = true;
m_ok = updStatus();
}
MPDCli::~MPDCli()
{
if (m_conn)
mpd_connection_free(M_CONN);
regfree(&m_tpuexpr);
}
bool MPDCli::looksLikeTransportURI(const string& path)
{
return (regexec(&m_tpuexpr, path.c_str(), 0, 0, 0) == 0);
}
bool MPDCli::openconn()
{
if (m_conn) {
mpd_connection_free(M_CONN);
m_conn = 0;
}
m_conn = mpd_connection_new(m_host.c_str(), m_port, 0);
if (m_conn == NULL) {
LOGERR("mpd_connection_new failed. No memory?" << endl);
return false;
}
if (mpd_connection_get_error(M_CONN) != MPD_ERROR_SUCCESS) {
showError("MPDCli::openconn");
return false;
}
if(!m_password.empty()) {
if (!mpd_run_password(M_CONN, m_password.c_str())) {
LOGERR("Password wrong" << endl);
return false;
}
}
return true;
}
bool MPDCli::showError(const string& who)
{
if (!ok()) {
LOGERR("MPDCli::showError: bad state" << endl);
return false;
}
int error = mpd_connection_get_error(M_CONN);
if (error == MPD_ERROR_SUCCESS) {
//LOGDEB("MPDCli::showError: " << who << " success !" << endl);
return false;
}
LOGERR(who << " failed: " << mpd_connection_get_error_message(M_CONN)
<< endl);
if (error == MPD_ERROR_SERVER) {
LOGERR(who << " server error: " <<
mpd_connection_get_server_error(M_CONN) << endl);
}
if (error == MPD_ERROR_CLOSED)
if (openconn())
return true;
return false;
}
#define RETRY_CMD(CMD) { \
for (int i = 0; i < 2; i++) { \
if ((CMD)) \
break; \
if (i == 1 || !showError(#CMD)) \
return false; \
} \
}
#define RETRY_CMD_WITH_SLEEP(CMD) { \
for (int i = 0; i < 2; i++) { \
if ((CMD)) \
break; \
sleep(1); \
if (i == 1 || !showError(#CMD)) \
return false; \
} \
}
bool MPDCli::updStatus()
{
if (!ok()) {
LOGERR("MPDCli::updStatus: bad state" << endl);
return false;
}
mpd_status *mpds = 0;
mpds = mpd_run_status(M_CONN);
if (mpds == 0) {
openconn();
mpds = mpd_run_status(M_CONN);
if (mpds == 0) {
LOGERR("MPDCli::updStatus: can't get status" << endl);
showError("MPDCli::updStatus");
}
return false;
}
m_stat.volume = mpd_status_get_volume(mpds);
if (m_stat.volume >= 0) {
m_cachedvolume = m_stat.volume;
} else {
m_stat.volume = m_cachedvolume;
}
m_stat.rept = mpd_status_get_repeat(mpds);
m_stat.random = mpd_status_get_random(mpds);
m_stat.single = mpd_status_get_single(mpds);
m_stat.consume = mpd_status_get_consume(mpds);
m_stat.qlen = mpd_status_get_queue_length(mpds);
m_stat.qvers = mpd_status_get_queue_version(mpds);
switch (mpd_status_get_state(mpds)) {
case MPD_STATE_STOP:
// Only execute onstop command if mpd was playing or paused
if (!m_onstop.empty() && (m_stat.state == MpdStatus::MPDS_PLAY ||
m_stat.state == MpdStatus::MPDS_PAUSE)) {
if (system(m_onstop.c_str())) {
LOGERR("MPDCli::updStatus: " << m_onstop << " failed "<< endl);
}
}
m_stat.state = MpdStatus::MPDS_STOP;
break;
case MPD_STATE_PLAY: m_stat.state = MpdStatus::MPDS_PLAY;break;
case MPD_STATE_PAUSE: m_stat.state = MpdStatus::MPDS_PAUSE;break;
case MPD_STATE_UNKNOWN:
default:
m_stat.state = MpdStatus::MPDS_UNK;
break;
}
m_stat.crossfade = mpd_status_get_crossfade(mpds);
m_stat.mixrampdb = mpd_status_get_mixrampdb(mpds);
m_stat.mixrampdelay = mpd_status_get_mixrampdelay(mpds);
m_stat.songpos = mpd_status_get_song_pos(mpds);
m_stat.songid = mpd_status_get_song_id(mpds);
if (m_stat.songpos >= 0) {
string prevuri = m_stat.currentsong.uri;
statSong(m_stat.currentsong);
if (m_stat.currentsong.uri.compare(prevuri)) {
m_stat.trackcounter++;
m_stat.detailscounter = 0;
}
statSong(m_stat.nextsong, m_stat.songpos + 1);
}
m_stat.songelapsedms = mpd_status_get_elapsed_ms(mpds);
m_stat.songlenms = mpd_status_get_total_time(mpds) * 1000;
m_stat.kbrate = mpd_status_get_kbit_rate(mpds);
const struct mpd_audio_format *maf =
mpd_status_get_audio_format(mpds);
if (maf) {
m_stat.bitdepth = maf->bits;
m_stat.sample_rate = maf->sample_rate;
m_stat.channels = maf->channels;
} else {
m_stat.bitdepth = m_stat.channels = m_stat.sample_rate = 0;
}
const char *err = mpd_status_get_error(mpds);
if (err != 0)
m_stat.errormessage.assign(err);
mpd_status_free(mpds);
return true;
}
bool MPDCli::checkForCommand(const string& cmdname)
{
LOGDEB1("MPDCli::checkForCommand: " << cmdname << endl);
bool found = false;
RETRY_CMD(mpd_send_allowed_commands(M_CONN));
struct mpd_pair *rep;
do {
rep = mpd_recv_command_pair(M_CONN);
if (rep) {
//LOGDEB("MPDCli::checkForCommand: name " << rep->name <<
// " value " << rep->value << endl);
found = !cmdname.compare(rep->value);
mpd_return_pair(M_CONN, rep);
if (found)
break;
}
} while (rep);
if (!mpd_response_finish(M_CONN)) {
LOGERR("MPDCli::checkForCommand: mpd_response_finish failed" << endl);
}
return found;
}
bool MPDCli::saveState(MpdState& st, int seekms)
{
LOGDEB("MPDCli::saveState: seekms " << seekms << endl);
if (!updStatus()) {
LOGERR("MPDCli::saveState: can't retrieve current status\n");
return false;
}
st.status = m_stat;
if (seekms > 0) {
st.status.songelapsedms = seekms;
}
st.queue.clear();
if (!getQueueData(st.queue)) {
LOGERR("MPDCli::saveState: can't retrieve current playlist\n");
return false;
}
return true;
}
bool MPDCli::restoreState(const MpdState& st)
{
LOGDEB("MPDCli::restoreState: seekms " << st.status.songelapsedms << endl);
clearQueue();
for (unsigned int i = 0; i < st.queue.size(); i++) {
if (insert(st.queue[i].uri, i, st.queue[i]) < 0) {
LOGERR("MPDCli::restoreState: insert failed\n");
return false;
}
}
repeat(st.status.rept);
random(st.status.random);
single(st.status.single);
consume(st.status.consume);
// If songelapsedms is set, we have to start playing to restore it
if (st.status.songelapsedms > 0 ||
st.status.state == MpdStatus::MPDS_PLAY) {
play(st.status.songpos);
setVolume(st.status.volume);
if (st.status.songelapsedms > 0)
seek(st.status.songelapsedms/1000);
}
return true;
}
bool MPDCli::statSong(UpSong& upsong, int pos, bool isid)
{
//LOGDEB1("MPDCli::statSong. isid " << isid << " id/pos " << pos << endl);
if (!ok())
return false;
struct mpd_song *song;
if (isid == false) {
if (pos == -1) {
RETRY_CMD(song = mpd_run_current_song(M_CONN));
} else {
RETRY_CMD(song = mpd_run_get_queue_song_pos(M_CONN,
(unsigned int)pos));
}
} else {
RETRY_CMD(song = mpd_run_get_queue_song_id(M_CONN, (unsigned int)pos));
}
if (song == 0) {
LOGERR("mpd_run_current_song failed" << endl);
return false;
}
mapSong(upsong, song);
mpd_song_free(song);
return true;
}
UpSong& MPDCli::mapSong(UpSong& upsong, struct mpd_song *song)
{
//LOGDEB1("MPDCli::mapSong" << endl);
const char *cp;
cp = mpd_song_get_uri(song);
if (cp != 0)
upsong.uri = cp;
else
upsong.uri.clear();
// If the URI looks like a local file
// name, replace with a bogus http uri. This is to fool
// Bubble UPnP into accepting to play them (it does not
// actually need an URI as it's going to use seekid, but
// it believes it does).
if (!looksLikeTransportURI(upsong.uri)) {
//LOGDEB("MPDCli::mapSong: id " << upsong.mpdid <<
// " replacing [" << upsong.uri << "]" << endl);
upsong.uri = "http://127.0.0.1/" + upsong.uri;
}
cp = mpd_song_get_tag(song, MPD_TAG_NAME, 0);
if (cp != 0)
upsong.name = cp;
else
upsong.name.clear();
cp = mpd_song_get_tag(song, MPD_TAG_ARTIST, 0);
if (cp != 0)
upsong.artist = cp;
else
upsong.artist.clear();
if (upsong.artist.empty())
upsong.artist = upsong.name;
cp = mpd_song_get_tag(song, MPD_TAG_ALBUM, 0);
if (cp != 0)
upsong.album = cp;
else
upsong.album.clear();
cp = mpd_song_get_tag(song, MPD_TAG_TITLE, 0);
if (cp != 0)
upsong.title = cp;
else
upsong.title.clear();
cp = mpd_song_get_tag(song, MPD_TAG_TRACK, 0);
if (cp != 0)
upsong.tracknum = cp;
else
upsong.tracknum.clear();
cp = mpd_song_get_tag(song, MPD_TAG_GENRE, 0);
if (cp != 0)
upsong.genre = cp;
else
upsong.genre.clear();
upsong.duration_secs = mpd_song_get_duration(song);
upsong.mpdid = mpd_song_get_id(song);
// LOGDEB1("MPDCli::mapSong: got mpdid " << upsong.mpdid << " " <<
// upsong.dump() << endl);
return upsong;
}
bool MPDCli::setVolume(int volume, bool isMute)
{
LOGDEB1("MPDCli::setVolume" << endl);
if (!ok()) {
return false;
}
// ??MPD does not want to set the volume if not active.??
// This does not seem to be the case with recent MPD versions
if (!(m_stat.state == MpdStatus::MPDS_PLAY) &&
!(m_stat.state == MpdStatus::MPDS_PAUSE)) {
LOGINF("MPDCli::setVolume: not active" << endl);
return true;
}
LOGDEB("MPDCli::setVolume: vol " << volume << " isMute " << isMute << endl);
if (isMute) {
if (volume) {
// If we're already not muted, do nothing
if (m_premutevolume == 0)
return true;
// Restore premute volume
LOGDEB("MPDCli::setVolume: restoring premute " << m_premutevolume
<< endl);
volume = m_stat.volume = m_premutevolume;
m_premutevolume = 0;
} else {
// If we're already muted, do nothing
if (m_premutevolume > 0)
return true;
if (m_cachedvolume > 0) {
m_premutevolume = m_cachedvolume;
}
}
}
if (volume < 0)
volume = 0;
else if (volume > 100)
volume = 100;
RETRY_CMD(mpd_run_set_volume(M_CONN, volume));
if (!m_onvolumechange.empty()) {
char buf[256];
int n = snprintf(buf, sizeof buf, "%s %i", m_onvolumechange.c_str(),
volume);
if (!(n >= 0 && n < 256 && system(buf) != 0)) {
// The command has not been completely written to the buffer or
// the command has not run successfully.
LOGERR("MPDCli::setVolume: " << m_onvolumechange << " failed "
<< endl);
}
}
m_stat.volume = volume;
m_cachedvolume = volume;
return true;
}
int MPDCli::getVolume()
{
//LOGDEB1("MPDCli::getVolume" << endl);
return m_stat.volume >= 0 ? m_stat.volume : m_cachedvolume;
}
bool MPDCli::togglePause()
{
LOGDEB("MPDCli::togglePause" << endl);
if (!ok())
return false;
RETRY_CMD(mpd_run_toggle_pause(M_CONN));
return true;
}
bool MPDCli::pause(bool onoff)
{
LOGDEB("MPDCli::pause" << endl);
if (!ok())
return false;
RETRY_CMD(mpd_run_pause(M_CONN, onoff));
return true;
}
bool MPDCli::play(int pos)
{
LOGDEB("MPDCli::play(pos=" << pos << ")" << endl);
if (!ok())
return false;
if (!m_onstart.empty()) {
if (system(m_onstart.c_str())) {
LOGERR("MPDCli::play: " << m_onstart << " failed "<< endl);
}
}
if (pos >= 0) {
RETRY_CMD(mpd_run_play_pos(M_CONN, (unsigned int)pos));
} else {
RETRY_CMD(mpd_run_play(M_CONN));
}
return updStatus();
}
bool MPDCli::playId(int id)
{
LOGDEB("MPDCli::playId(id=" << id << ")" << endl);
if (!ok())
return false;
if (!m_onstart.empty()) {
if (system(m_onstart.c_str())) {
LOGERR("MPDCli::playId: " << m_onstart << " failed "<< endl);
}
}
RETRY_CMD(mpd_run_play_id(M_CONN, (unsigned int)id));
return updStatus();
}
bool MPDCli::stop()
{
LOGDEB("MPDCli::stop" << endl);
if (!ok())
return false;
RETRY_CMD(mpd_run_stop(M_CONN));
return true;
}
bool MPDCli::seek(int seconds)
{
if (!updStatus())
return -1;
LOGDEB("MPDCli::seek: pos:"<<m_stat.songpos<<" seconds: "<< seconds<<endl);
RETRY_CMD(mpd_run_seek_pos(M_CONN, m_stat.songpos, (unsigned int)seconds));
return true;
}
bool MPDCli::next()
{
LOGDEB("MPDCli::next" << endl);
if (!ok())
return false;
RETRY_CMD(mpd_run_next(M_CONN));
return true;
}
bool MPDCli::previous()
{
LOGDEB("MPDCli::previous" << endl);
if (!ok())
return false;
RETRY_CMD(mpd_run_previous(M_CONN));
return true;
}
bool MPDCli::repeat(bool on)
{
LOGDEB("MPDCli::repeat:" << on << endl);
if (!ok())
return false;
RETRY_CMD(mpd_run_repeat(M_CONN, on));
return true;
}
bool MPDCli::consume(bool on)
{
LOGDEB("MPDCli::consume:" << on << endl);
if (!ok())
return false;
RETRY_CMD(mpd_run_consume(M_CONN, on));
return true;
}
bool MPDCli::random(bool on)
{
LOGDEB("MPDCli::random:" << on << endl);
if (!ok())
return false;
RETRY_CMD(mpd_run_random(M_CONN, on));
return true;
}
bool MPDCli::single(bool on)
{
LOGDEB("MPDCli::single:" << on << endl);
if (!ok())
return false;
RETRY_CMD(mpd_run_single(M_CONN, on));
return true;
}
bool MPDCli::send_tag(const char *cid, int tag, const string& data)
{
if (!mpd_send_command(M_CONN, "addtagid", cid,
mpd_tag_name(mpd_tag_type(tag)),
data.c_str(), NULL)) {
LOGERR("MPDCli::send_tag: mpd_send_command failed" << endl);
return false;
}
if (!mpd_response_finish(M_CONN)) {
LOGERR("MPDCli::send_tag: mpd_response_finish failed\n");
showError("MPDCli::send_tag");
return false;
}
return true;
}
static const string upmpdcli_comment("client=upmpdcli;");
bool MPDCli::send_tag_data(int id, const UpSong& meta)
{
LOGDEB1("MPDCli::send_tag_data" << endl);
if (!m_have_addtagid)
return false;
char cid[30];
sprintf(cid, "%d", id);
if (!send_tag(cid, MPD_TAG_ARTIST, meta.artist))
return false;
if (!send_tag(cid, MPD_TAG_ALBUM, meta.album))
return false;
if (!send_tag(cid, MPD_TAG_TITLE, meta.title))
return false;
if (!send_tag(cid, MPD_TAG_TRACK, meta.tracknum))
return false;
if (!send_tag(cid, MPD_TAG_COMMENT, upmpdcli_comment))
return false;
return true;
}
int MPDCli::insert(const string& uri, int pos, const UpSong& meta)
{
LOGDEB("MPDCli::insert at :" << pos << " uri " << uri << endl);
if (!ok())
return -1;
RETRY_CMD((m_lastinsertid =
mpd_run_add_id_to(M_CONN, uri.c_str(), (unsigned)pos)) != -1);
if (m_have_addtagid)
send_tag_data(m_lastinsertid, meta);
m_lastinsertpos = pos;
updStatus();
m_lastinsertqvers = m_stat.qvers;
return m_lastinsertid;
}
int MPDCli::insertAfterId(const string& uri, int id, const UpSong& meta)
{
LOGDEB("MPDCli::insertAfterId: id " << id << " uri " << uri << endl);
if (!ok())
return -1;
// id == 0 means insert at start
if (id == 0) {
return insert(uri, 0, meta);
}
updStatus();
int newpos = 0;
if (m_lastinsertid == id && m_lastinsertpos >= 0 &&
m_lastinsertqvers == m_stat.qvers) {
newpos = m_lastinsertpos + 1;
} else {
// Translate input id to insert position
vector<mpd_song*> songs;
if (!getQueueSongs(songs)) {
return false;
}
for (unsigned int pos = 0; pos < songs.size(); pos++) {
unsigned int qid = mpd_song_get_id(songs[pos]);
if (qid == (unsigned int)id || pos == songs.size() -1) {
newpos = pos + 1;
break;
}
}
freeSongs(songs);
}
return insert(uri, newpos, meta);
}
bool MPDCli::clearQueue()
{
LOGDEB("MPDCli::clearQueue " << endl);
if (!ok())
return -1;
RETRY_CMD(mpd_run_clear(M_CONN));
return true;
}
bool MPDCli::deleteId(int id)
{
LOGDEB("MPDCli::deleteId " << id << endl);
if (!ok())
return -1;
// It seems that mpd will sometimes get in a funny state, esp.
// after failed statsongs. The exact mechanism is a mystery, but
// retrying the failed deletes with a bit of wait seems to help a
// lot, and this happens seldom enough that this is not a
// significant performance issue
RETRY_CMD_WITH_SLEEP(mpd_run_delete_id(M_CONN, (unsigned)id));
return true;
}
bool MPDCli::deletePosRange(unsigned int start, unsigned int end)
{
LOGDEB("MPDCli::deletePosRange [" << start << ", " << end << "[" << endl);
if (!ok())
return -1;
RETRY_CMD(mpd_run_delete_range(M_CONN, start, end));
return true;
}
bool MPDCli::statId(int id)
{
LOGDEB("MPDCli::statId " << id << endl);
if (!ok())
return -1;
mpd_song *song = mpd_run_get_queue_song_id(M_CONN, (unsigned)id);
if (song) {
mpd_song_free(song);
return true;
}
return false;
}
bool MPDCli::getQueueSongs(vector<mpd_song*>& songs)
{
//LOGDEB1("MPDCli::getQueueSongs" << endl);
songs.clear();
RETRY_CMD(mpd_send_list_queue_meta(M_CONN));
struct mpd_song *song;
while ((song = mpd_recv_song(M_CONN)) != NULL) {
songs.push_back(song);
}
if (!mpd_response_finish(M_CONN)) {
LOGERR("MPDCli::getQueueSongs: mpd_list_queue_meta failed"<< endl);
return false;
}
LOGDEB("MPDCli::getQueueSongs: " << songs.size() << " songs " << endl);
return true;
}
void MPDCli::freeSongs(vector<mpd_song*>& songs)
{
LOGDEB1("MPDCli::freeSongs" << endl);
for (vector<mpd_song*>::iterator it = songs.begin();
it != songs.end(); it++) {
mpd_song_free(*it);
}
}
bool MPDCli::getQueueData(std::vector<UpSong>& vdata)
{
LOGDEB("MPDCli::getQueueData" << endl);
vector<mpd_song*> songs;
if (!getQueueSongs(songs)) {
return false;
}
vdata.reserve(songs.size());
UpSong usong;
for (unsigned int pos = 0; pos < songs.size(); pos++) {
vdata.push_back(mapSong(usong, songs[pos]));
}
freeSongs(songs);
return true;
}
int MPDCli::curpos()
{
if (!updStatus())
return -1;
LOGDEB("MPDCli::curpos: pos: " << m_stat.songpos << " id "
<< m_stat.songid << endl);
return m_stat.songpos;
}
#ifdef MPDCLI_TEST
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <errno.h>
#include <string.h>
#include <string>
#include <iostream>
using namespace std;
#include "mpdcli.hxx"
static char *thisprog;
static char usage [] =
" \n\n"
;
static void
Usage(void)
{
fprintf(stderr, "%s: usage:\n%s", thisprog, usage);
exit(1);
}
static int op_flags;
#define OPT_MOINS 0x1
#define OPT_s 0x2
#define OPT_b 0x4
int main(int argc, char **argv)
{
int count = 10;
thisprog = argv[0];
argc--; argv++;
while (argc > 0 && **argv == '-') {
(*argv)++;
if (!(**argv))
/* Cas du "adb - core" */
Usage();
while (**argv)
switch (*(*argv)++) {
case 's': op_flags |= OPT_s; break;
case 'b': op_flags |= OPT_b; if (argc < 2) Usage();
if ((sscanf(*(++argv), "%d", &count)) != 1)
Usage();
argc--;
goto b1;
default: Usage(); break;
}
b1: argc--; argv++;
}
if (argc != 0)
Usage();
MPDCli cli("localhost");
if (!cli.ok()) {
cerr << "Cli connection failed" << endl;
return 1;
}
const MpdStatus& status = cli.getStatus();
if (status.state != MpdStatus::MPDS_PLAY) {
cerr << "Not playing" << endl;
return 1;
}
unsigned int seektarget = (status.songlenms - 4500)/1000;
cerr << "songpos " << status.songpos << " songid " << status.songid <<
" seeking to " << seektarget << " seconds" << endl;
if (!cli.seek(seektarget)) {
cerr << "Seek failed" << endl;
return 1;
}
return 0;
}
#endif