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conky/src/mpd.c

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/* -*- mode: c; c-basic-offset: 4; tab-width: 4; indent-tabs-mode: t -*-
* vim: ts=4 sw=4 noet ai cindent syntax=c
*
* Conky, a system monitor, based on torsmo
*
* Any original torsmo code is licensed under the BSD license
*
* All code written since the fork of torsmo is licensed under the GPL
*
* Please see COPYING for details
*
* Copyright (c) 2005-2009 Brenden Matthews, Philip Kovacs, et. al.
* (see AUTHORS)
* All rights reserved.
*
* 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 3 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, see <http://www.gnu.org/licenses/>.
*
2008-12-09 23:35:49 +00:00
*/
#include "conky.h"
#include "logging.h"
#include "timed_thread.h"
#include "timeinfo.h"
#include "libmpdclient.h"
#include "mpd.h"
/* server connection data */
static char mpd_host[128];
static char mpd_password[128];
static int mpd_port;
/* this is >0 if the current password was set from MPD_HOST */
static int mpd_environment_password = 0;
/* global mpd information */
static struct mpd_s mpd_info;
/* number of users of the above struct */
static int refcount = 0;
void mpd_set_host(const char *host)
{
snprintf(mpd_host, 128, "%s", host);
if (mpd_environment_password) {
/* for security, dont use environment password when user specifies host in config */
mpd_clear_password();
}
}
void mpd_set_password(const char *password, int from_environment)
{
snprintf(mpd_password, 128, "%s", password);
mpd_environment_password = from_environment;
}
void mpd_clear_password(void)
{
*mpd_password = '\0';
mpd_environment_password = 0;
}
int mpd_set_port(const char *port)
{
int val;
val = strtol(port, 0, 0);
if (val < 1 || val > 0xffff)
return 1;
mpd_port = val;
return 0;
}
void init_mpd(void)
{
if (!(refcount++)) /* first client */
memset(&mpd_info, 0, sizeof(struct mpd_s));
refcount++;
}
struct mpd_s *mpd_get_info(void)
{
return &mpd_info;
}
static void clear_mpd(void)
{
#define xfree(x) if (x) free(x)
xfree(mpd_info.title);
xfree(mpd_info.artist);
xfree(mpd_info.album);
/* do not free() the const char *status! */
/* do not free() the const char *random! */
/* do not free() the const char *repeat! */
xfree(mpd_info.track);
xfree(mpd_info.name);
xfree(mpd_info.file);
#undef xfree
memset(&mpd_info, 0, sizeof(struct mpd_s));
}
void free_mpd(void)
{
if (!(--refcount)) /* last client */
clear_mpd();
}
static void *update_mpd_thread(void *) __attribute__((noreturn));
void update_mpd(void)
{
int interval;
static timed_thread *thread = NULL;
if (thread)
return;
interval = info.music_player_interval * 1000000;
thread = timed_thread_create(&update_mpd_thread, &thread, interval);
if (!thread) {
NORM_ERR("Failed to create MPD timed thread");
return;
}
timed_thread_register(thread, &thread);
if (timed_thread_run(thread))
NORM_ERR("Failed to run MPD timed thread");
}
/* stringMAXdup dups at most text_buffer_size bytes */
#define strmdup(x) strndup(x, text_buffer_size - 1)
static void *update_mpd_thread(void *arg)
{
static mpd_Connection *conn = NULL;
mpd_Status *status;
mpd_InfoEntity *entity;
timed_thread *me = *(timed_thread **)arg;
const char *emptystr = "";
while (1) {
if (!conn)
conn = mpd_newConnection(mpd_host, mpd_port, 10);
if (*mpd_password) {
mpd_sendPasswordCommand(conn, mpd_password);
mpd_finishCommand(conn);
}
timed_thread_lock(me);
if (conn->error || conn == NULL) {
NORM_ERR("MPD error: %s\n", conn->errorStr);
mpd_closeConnection(conn);
conn = 0;
clear_mpd();
mpd_info.status = "MPD not responding";
timed_thread_unlock(me);
if (timed_thread_test(me, 0)) {
timed_thread_exit(me);
}
continue;
}
mpd_sendStatusCommand(conn);
if ((status = mpd_getStatus(conn)) == NULL) {
NORM_ERR("MPD error: %s\n", conn->errorStr);
mpd_closeConnection(conn);
conn = 0;
clear_mpd();
mpd_info.status = "MPD not responding";
timed_thread_unlock(me);
if (timed_thread_test(me, 0)) {
timed_thread_exit(me);
}
continue;
}
mpd_finishCommand(conn);
if (conn->error) {
// fprintf(stderr, "%s\n", conn->errorStr);
mpd_closeConnection(conn);
conn = 0;
timed_thread_unlock(me);
if (timed_thread_test(me, 0)) {
timed_thread_exit(me);
}
continue;
}
mpd_info.vol = status->volume;
if (status->random == 0) {
mpd_info.random = "Off";
} else if (status->random == 1) {
mpd_info.random = "On";
} else {
mpd_info.random = "";
}
if (status->repeat == 0) {
mpd_info.repeat = "Off";
} else if (status->repeat == 1) {
mpd_info.repeat = "On";
} else {
mpd_info.repeat = "";
}
/* if (status->error) {
printf("error: %s\n", status->error);
} */
switch (status->state) {
case MPD_STATUS_STATE_PLAY:
mpd_info.status = "Playing";
break;
case MPD_STATUS_STATE_STOP:
mpd_info.status = "Stopped";
break;
case MPD_STATUS_STATE_PAUSE:
mpd_info.status = "Paused";
break;
default:
mpd_info.status = "";
clear_mpd();
break;
}
if (status->state == MPD_STATUS_STATE_PLAY ||
status->state == MPD_STATUS_STATE_PAUSE) {
mpd_info.is_playing = 1;
mpd_info.bitrate = status->bitRate;
mpd_info.progress = (float) status->elapsedTime /
status->totalTime;
mpd_info.elapsed = status->elapsedTime;
mpd_info.length = status->totalTime;
} else {
mpd_info.progress = 0;
mpd_info.is_playing = 0;
mpd_info.elapsed = 0;
}
if (conn->error) {
// fprintf(stderr, "%s\n", conn->errorStr);
mpd_closeConnection(conn);
conn = 0;
timed_thread_unlock(me);
if (timed_thread_test(me, 0)) {
timed_thread_exit(me);
}
continue;
}
mpd_sendCurrentSongCommand(conn);
while ((entity = mpd_getNextInfoEntity(conn))) {
mpd_Song *song = entity->info.song;
if (entity->type != MPD_INFO_ENTITY_TYPE_SONG) {
mpd_freeInfoEntity(entity);
continue;
}
#define SONGSET(x) { \
free(mpd_info.x); \
if(song->x) \
mpd_info.x = strmdup(song->x); \
else \
mpd_info.x = strmdup(emptystr); \
}
SONGSET(artist);
SONGSET(album);
SONGSET(title);
SONGSET(track);
SONGSET(name);
SONGSET(file);
#undef SONGSET
if (entity != NULL) {
mpd_freeInfoEntity(entity);
entity = NULL;
}
}
mpd_finishCommand(conn);
if (conn->error) {
// fprintf(stderr, "%s\n", conn->errorStr);
mpd_closeConnection(conn);
conn = 0;
timed_thread_unlock(me);
if (timed_thread_test(me, 0)) {
timed_thread_exit(me);
}
continue;
}
timed_thread_unlock(me);
if (conn->error) {
// fprintf(stderr, "%s\n", conn->errorStr);
mpd_closeConnection(conn);
conn = 0;
if (timed_thread_test(me, 0)) {
timed_thread_exit(me);
}
continue;
}
mpd_freeStatus(status);
/* if (conn) {
mpd_closeConnection(conn);
conn = 0;
} */
if (timed_thread_test(me, 0)) {
timed_thread_exit(me);
}
continue;
}
/* never reached */
}
static inline void format_media_player_time(char *buf, const int size,
int seconds)
{
int days, hours, minutes;
if (times_in_seconds()) {
snprintf(buf, size, "%d", seconds);
return;
}
days = seconds / (24 * 60 * 60);
seconds %= (24 * 60 * 60);
hours = seconds / (60 * 60);
seconds %= (60 * 60);
minutes = seconds / 60;
seconds %= 60;
if (days > 0) {
snprintf(buf, size, "%i days %i:%02i:%02i", days,
hours, minutes, seconds);
} else if (hours > 0) {
snprintf(buf, size, "%i:%02i:%02i", hours, minutes,
seconds);
} else {
snprintf(buf, size, "%i:%02i", minutes, seconds);
}
}
void print_mpd_elapsed(struct text_object *obj, char *p, int p_max_size)
{
(void)obj;
format_media_player_time(p, p_max_size, mpd_get_info()->elapsed);
}
void print_mpd_length(struct text_object *obj, char *p, int p_max_size)
{
(void)obj;
format_media_player_time(p, p_max_size, mpd_get_info()->length);
}
void print_mpd_percent(struct text_object *obj, char *p, int p_max_size)
{
(void)obj;
percent_print(p, p_max_size, (int)(mpd_get_info()->progress * 100));
}
void print_mpd_bar(struct text_object *obj, char *p, int p_max_size)
{
new_bar(obj, p, p_max_size, (int) (mpd_get_info()->progress * 255.0f));
}
void print_mpd_smart(struct text_object *obj, char *p, int p_max_size)
{
struct mpd_s *mpd = mpd_get_info();
int len = obj->data.i;
if (len == 0 || len > p_max_size)
len = p_max_size;
memset(p, 0, p_max_size);
if (mpd->artist && *mpd->artist &&
mpd->title && *mpd->title) {
snprintf(p, len, "%s - %s", mpd->artist,
mpd->title);
} else if (mpd->title && *mpd->title) {
snprintf(p, len, "%s", mpd->title);
} else if (mpd->artist && *mpd->artist) {
snprintf(p, len, "%s", mpd->artist);
} else if (mpd->file && *mpd->file) {
snprintf(p, len, "%s", mpd->file);
} else {
*p = 0;
}
}
int check_mpd_playing(struct text_object *obj)
{
(void)obj;
return mpd_get_info()->is_playing;
}
#define MPD_PRINT_GENERATOR(name, fmt) \
void print_mpd_##name(struct text_object *obj, char *p, int p_max_size) \
{ \
if (obj->data.i && obj->data.i < p_max_size) \
p_max_size = obj->data.i; \
snprintf(p, p_max_size, fmt, mpd_get_info()->name); \
}
MPD_PRINT_GENERATOR(title, "%s")
MPD_PRINT_GENERATOR(artist, "%s")
MPD_PRINT_GENERATOR(album, "%s")
MPD_PRINT_GENERATOR(random, "%s")
MPD_PRINT_GENERATOR(repeat, "%s")
MPD_PRINT_GENERATOR(track, "%s")
MPD_PRINT_GENERATOR(name, "%s")
MPD_PRINT_GENERATOR(file, "%s")
MPD_PRINT_GENERATOR(vol, "%d")
MPD_PRINT_GENERATOR(bitrate, "%d")
MPD_PRINT_GENERATOR(status, "%s")
#undef MPD_PRINT_GENERATOR