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owntone-server/src/inputs/libspotify/libspotify.c

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/*
* Copyright (C) 2016-17 Espen Jürgensen <espenjurgensen@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
*/
#ifdef HAVE_CONFIG_H
# include <config.h>
#endif
#include <stdio.h>
#include <stdlib.h>
#include <stdbool.h>
#include <stdint.h>
#include <fcntl.h>
#include <unistd.h>
#include <string.h>
#include <time.h>
#include <errno.h>
#include <sys/param.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <sys/ioctl.h>
#include <sys/queue.h>
#include <pthread.h>
#include <dlfcn.h>
#include <libspotify/api.h>
#include <json.h>
#include "libspotify.h"
#include "library.h"
#include "library/spotify_webapi.h"
#include "logger.h"
#include "misc.h"
#include "http.h"
#include "conffile.h"
#include "cache.h"
#include "commands.h"
#include "input.h"
#include "listener.h"
// How long to wait for artwork (in sec) before giving up
#define SPOTIFY_ARTWORK_TIMEOUT 3
// An upper limit on sequential requests to Spotify's web api
// - each request will return 50 objects (tracks)
#define SPOTIFY_WEB_REQUESTS_MAX 20
/* --- Types --- */
enum spotify_state
{
SPOTIFY_STATE_INACTIVE,
SPOTIFY_STATE_WAIT,
SPOTIFY_STATE_PLAYING,
SPOTIFY_STATE_PAUSED,
SPOTIFY_STATE_STOPPING,
SPOTIFY_STATE_STOPPED,
};
struct artwork_get_param
{
struct evbuffer *evbuf;
char *path;
int max_w;
int max_h;
sp_image *image;
pthread_mutex_t mutex;
pthread_cond_t cond;
int is_loaded;
};
static void
libspotify_playback_stop_nonblock(void);
/* --- Globals --- */
// Spotify thread
static pthread_t tid_spotify;
// Used to make sure no login is attempted before the logout cb from Spotify
static pthread_mutex_t login_lck;
static pthread_cond_t login_cond;
// Event base, pipes and events
struct event_base *evbase_spotify;
static int g_notify_pipe[2];
static struct event *g_notifyev;
static struct commands_base *cmdbase;
// The session handle
static sp_session *g_sess;
// The library handle
static void *g_libhandle;
// The state telling us what the thread is currently doing
static enum spotify_state g_state;
static pthread_mutex_t status_lck;
static struct spotify_status_info spotify_status_info;
// Timeout timespec
static struct timespec spotify_artwork_timeout = { SPOTIFY_ARTWORK_TIMEOUT, 0 };
// Audio buffer
static struct evbuffer *spotify_audio_buffer;
/**
* The application key is specific to forked-daapd, and allows Spotify
* to produce statistics on how their service is used.
*/
const uint8_t g_appkey[] = {
0x01, 0xC6, 0x9D, 0x18, 0xA4, 0xF7, 0x79, 0x12, 0x43, 0x55, 0x0F, 0xAD, 0xBF, 0x23, 0x23, 0x10,
0x2E, 0x51, 0x46, 0x8F, 0x06, 0x3D, 0xEE, 0xC3, 0xF0, 0x2A, 0x5D, 0x8E, 0x72, 0x35, 0xD1, 0x21,
0x44, 0xE3, 0x19, 0x80, 0xED, 0xD5, 0xAD, 0xE6, 0xE1, 0xDD, 0xBE, 0xCB, 0xA9, 0x84, 0xBD, 0xC2,
0xAF, 0xB1, 0xF2, 0xD5, 0x87, 0xFC, 0x35, 0xD6, 0x1C, 0x5F, 0x5B, 0x76, 0x38, 0x1D, 0x6E, 0x49,
0x6D, 0x85, 0x15, 0xCD, 0x38, 0x14, 0xD6, 0xB8, 0xFE, 0x05, 0x0A, 0xAC, 0x9B, 0x31, 0xD1, 0xC0,
0xAF, 0x16, 0x78, 0x48, 0x49, 0x27, 0x41, 0xCA, 0xAF, 0x07, 0xEC, 0x10, 0x5D, 0x19, 0x43, 0x2E,
0x84, 0xEB, 0x43, 0x5D, 0x4B, 0xBF, 0xD0, 0x5C, 0xDF, 0x3D, 0x12, 0x6D, 0x1C, 0x76, 0x4E, 0x9F,
0xBF, 0x14, 0xC9, 0x46, 0x95, 0x99, 0x32, 0x6A, 0xC2, 0xF1, 0x89, 0xA4, 0xB3, 0xF3, 0xA0, 0xEB,
0xDA, 0x84, 0x67, 0x27, 0x07, 0x1F, 0xF6, 0x19, 0xAC, 0xF1, 0xB8, 0xB6, 0xCF, 0xAB, 0xF8, 0x0A,
0xEE, 0x4D, 0xAC, 0xC2, 0x39, 0x63, 0x50, 0x13, 0x7B, 0x51, 0x3A, 0x50, 0xE0, 0x03, 0x6E, 0xB7,
0x17, 0xEE, 0x58, 0xCE, 0xF8, 0x15, 0x3C, 0x70, 0xDE, 0xE6, 0xEB, 0xE6, 0xD4, 0x2C, 0x27, 0xB9,
0xCA, 0x15, 0xCE, 0x2E, 0x31, 0x54, 0xF5, 0x0A, 0x98, 0x8D, 0x78, 0xE5, 0xB6, 0xF8, 0xE4, 0x62,
0x43, 0xAA, 0x37, 0x93, 0xFF, 0xE3, 0xAB, 0x17, 0xC5, 0x81, 0x4F, 0xFD, 0xF1, 0x84, 0xE1, 0x8A,
0x99, 0xB0, 0x1D, 0x85, 0x80, 0xA2, 0x49, 0x35, 0x8D, 0xDD, 0xBC, 0x74, 0x0B, 0xBA, 0x33, 0x5B,
0xD5, 0x7A, 0xB9, 0x2F, 0x9B, 0x24, 0xA5, 0xAB, 0xF6, 0x1E, 0xE3, 0xA3, 0xA8, 0x0D, 0x1E, 0x48,
0xF7, 0xDB, 0xE2, 0x54, 0x65, 0x43, 0xA6, 0xD3, 0x3F, 0x2C, 0x9B, 0x13, 0x9A, 0xBE, 0x0F, 0x4D,
0x51, 0xC3, 0x73, 0xA5, 0xFE, 0xFC, 0x93, 0x12, 0xEF, 0x9C, 0x4D, 0x68, 0xE3, 0xDA, 0x52, 0x67,
0x28, 0x41, 0x17, 0x22, 0x3E, 0x33, 0xB0, 0x3A, 0xFB, 0x44, 0xB0, 0x2E, 0xA6, 0xD2, 0x95, 0xC0,
0x9A, 0xBA, 0x32, 0xA3, 0xC5, 0xFE, 0x86, 0x5D, 0xC8, 0xBB, 0xB5, 0xDE, 0x92, 0x8C, 0x7D, 0xE4,
0x03, 0xD4, 0xF9, 0xAE, 0x41, 0xE3, 0xBD, 0x35, 0x4B, 0x94, 0x27, 0xE0, 0x12, 0x21, 0x46, 0xE9,
0x09,
};
// This section defines and assigns function pointers to the libspotify functions
// The arguments and return values must be in sync with the spotify api
// Please scroll through the ugliness which follows
typedef const char* (*fptr_sp_error_message_t)(sp_error error);
typedef sp_error (*fptr_sp_session_create_t)(const sp_session_config *config, sp_session **sess);
typedef sp_error (*fptr_sp_session_release_t)(sp_session *sess);
typedef sp_error (*fptr_sp_session_login_t)(sp_session *session, const char *username, const char *password, bool remember_me, const char *blob);
typedef sp_error (*fptr_sp_session_relogin_t)(sp_session *session);
typedef sp_error (*fptr_sp_session_logout_t)(sp_session *session);
typedef sp_error (*fptr_sp_session_process_events_t)(sp_session *session, int *next_timeout);
typedef sp_playlist* (*fptr_sp_session_starred_create_t)(sp_session *session);
typedef sp_playlistcontainer* (*fptr_sp_session_playlistcontainer_t)(sp_session *session);
typedef sp_error (*fptr_sp_session_player_load_t)(sp_session *session, sp_track *track);
typedef sp_error (*fptr_sp_session_player_unload_t)(sp_session *session);
typedef sp_error (*fptr_sp_session_player_play_t)(sp_session *session, bool play);
typedef sp_error (*fptr_sp_session_player_seek_t)(sp_session *session, int offset);
typedef sp_connectionstate (*fptr_sp_session_connectionstate_t)(sp_session *session);
typedef sp_error (*fptr_sp_session_preferred_bitrate_t)(sp_session *session, sp_bitrate bitrate);
typedef const char* (*fptr_sp_session_user_name_t)(sp_session *session);
typedef sp_error (*fptr_sp_playlistcontainer_add_callbacks_t)(sp_playlistcontainer *pc, sp_playlistcontainer_callbacks *callbacks, void *userdata);
typedef int (*fptr_sp_playlistcontainer_num_playlists_t)(sp_playlistcontainer *pc);
typedef sp_playlist* (*fptr_sp_playlistcontainer_playlist_t)(sp_playlistcontainer *pc, int index);
typedef sp_error (*fptr_sp_playlist_add_callbacks_t)(sp_playlist *playlist, sp_playlist_callbacks *callbacks, void *userdata);
typedef const char* (*fptr_sp_playlist_name_t)(sp_playlist *playlist);
typedef sp_error (*fptr_sp_playlist_remove_callbacks_t)(sp_playlist *playlist, sp_playlist_callbacks *callbacks, void *userdata);
typedef int (*fptr_sp_playlist_num_tracks_t)(sp_playlist *playlist);
typedef sp_track* (*fptr_sp_playlist_track_t)(sp_playlist *playlist, int index);
typedef bool (*fptr_sp_playlist_is_loaded_t)(sp_playlist *playlist);
typedef int (*fptr_sp_playlist_track_create_time_t)(sp_playlist *playlist, int index);
typedef sp_user* (*fptr_sp_playlist_owner_t)(sp_playlist *playlist);
typedef sp_error (*fptr_sp_track_error_t)(sp_track *track);
typedef bool (*fptr_sp_track_is_loaded_t)(sp_track *track);
typedef const char* (*fptr_sp_track_name_t)(sp_track *track);
typedef int (*fptr_sp_track_duration_t)(sp_track *track);
typedef int (*fptr_sp_track_index_t)(sp_track *track);
typedef int (*fptr_sp_track_disc_t)(sp_track *track);
typedef sp_album* (*fptr_sp_track_album_t)(sp_track *track);
typedef sp_track_availability (*fptr_sp_track_get_availability_t)(sp_session *session, sp_track *track);
typedef bool (*fptr_sp_track_is_starred_t)(sp_session *session, sp_track *track);
typedef sp_link* (*fptr_sp_link_create_from_playlist_t)(sp_playlist *playlist);
typedef sp_link* (*fptr_sp_link_create_from_track_t)(sp_track *track, int offset);
typedef sp_link* (*fptr_sp_link_create_from_string_t)(const char *link);
typedef int (*fptr_sp_link_as_string_t)(sp_link *link, char *buffer, int buffer_size);
typedef sp_track* (*fptr_sp_link_as_track_t)(sp_link *link);
typedef sp_error (*fptr_sp_link_release_t)(sp_link *link);
typedef const char* (*fptr_sp_album_name_t)(sp_album *album);
typedef sp_artist* (*fptr_sp_album_artist_t)(sp_album *album);
typedef int (*fptr_sp_album_year_t)(sp_album *album);
typedef sp_albumtype (*fptr_sp_album_type_t)(sp_album *album);
typedef const byte* (*fptr_sp_album_cover_t)(sp_album *album, sp_image_size size);
typedef const char* (*fptr_sp_artist_name_t)(sp_artist *artist);
typedef sp_image* (*fptr_sp_image_create_t)(sp_session *session, const byte image_id[20]);
typedef bool (*fptr_sp_image_is_loaded_t)(sp_image *image);
typedef sp_error (*fptr_sp_image_error_t)(sp_image *image);
typedef sp_imageformat (*fptr_sp_image_format_t)(sp_image *image);
typedef const void* (*fptr_sp_image_data_t)(sp_image *image, size_t *data_size);
typedef sp_error (*fptr_sp_image_release_t)(sp_image *image);
typedef sp_error (*fptr_sp_image_add_load_callback_t)(sp_image *image, image_loaded_cb *callback, void *userdata);
typedef sp_error (*fptr_sp_image_remove_load_callback_t)(sp_image *image, image_loaded_cb *callback, void *userdata);
typedef const char* (*fptr_sp_user_display_name_t)(sp_user *user);
typedef const char* (*fptr_sp_user_canonical_name_t)(sp_user *user);
/* Define actual function pointers */
fptr_sp_error_message_t fptr_sp_error_message;
fptr_sp_session_create_t fptr_sp_session_create;
fptr_sp_session_release_t fptr_sp_session_release;
fptr_sp_session_login_t fptr_sp_session_login;
fptr_sp_session_relogin_t fptr_sp_session_relogin;
fptr_sp_session_logout_t fptr_sp_session_logout;
fptr_sp_session_starred_create_t fptr_sp_session_starred_create;
fptr_sp_session_playlistcontainer_t fptr_sp_session_playlistcontainer;
fptr_sp_session_process_events_t fptr_sp_session_process_events;
fptr_sp_session_player_load_t fptr_sp_session_player_load;
fptr_sp_session_player_unload_t fptr_sp_session_player_unload;
fptr_sp_session_player_play_t fptr_sp_session_player_play;
fptr_sp_session_player_seek_t fptr_sp_session_player_seek;
fptr_sp_session_connectionstate_t fptr_sp_session_connectionstate;
fptr_sp_session_preferred_bitrate_t fptr_sp_session_preferred_bitrate;
fptr_sp_session_user_name_t fptr_sp_session_user_name;
fptr_sp_playlistcontainer_add_callbacks_t fptr_sp_playlistcontainer_add_callbacks;
fptr_sp_playlistcontainer_num_playlists_t fptr_sp_playlistcontainer_num_playlists;
fptr_sp_playlistcontainer_playlist_t fptr_sp_playlistcontainer_playlist;
fptr_sp_playlist_add_callbacks_t fptr_sp_playlist_add_callbacks;
fptr_sp_playlist_name_t fptr_sp_playlist_name;
fptr_sp_playlist_remove_callbacks_t fptr_sp_playlist_remove_callbacks;
fptr_sp_playlist_num_tracks_t fptr_sp_playlist_num_tracks;
fptr_sp_playlist_track_t fptr_sp_playlist_track;
fptr_sp_playlist_is_loaded_t fptr_sp_playlist_is_loaded;
fptr_sp_playlist_track_create_time_t fptr_sp_playlist_track_create_time;
fptr_sp_playlist_owner_t fptr_sp_playlist_owner;
fptr_sp_track_error_t fptr_sp_track_error;
fptr_sp_track_is_loaded_t fptr_sp_track_is_loaded;
fptr_sp_track_name_t fptr_sp_track_name;
fptr_sp_track_duration_t fptr_sp_track_duration;
fptr_sp_track_index_t fptr_sp_track_index;
fptr_sp_track_disc_t fptr_sp_track_disc;
fptr_sp_track_album_t fptr_sp_track_album;
fptr_sp_track_get_availability_t fptr_sp_track_get_availability;
fptr_sp_track_is_starred_t fptr_sp_track_is_starred;
fptr_sp_link_create_from_playlist_t fptr_sp_link_create_from_playlist;
fptr_sp_link_create_from_track_t fptr_sp_link_create_from_track;
fptr_sp_link_create_from_string_t fptr_sp_link_create_from_string;
fptr_sp_link_as_string_t fptr_sp_link_as_string;
fptr_sp_link_as_track_t fptr_sp_link_as_track;
fptr_sp_link_release_t fptr_sp_link_release;
fptr_sp_album_name_t fptr_sp_album_name;
fptr_sp_album_artist_t fptr_sp_album_artist;
fptr_sp_album_year_t fptr_sp_album_year;
fptr_sp_album_type_t fptr_sp_album_type;
fptr_sp_album_cover_t fptr_sp_album_cover;
fptr_sp_artist_name_t fptr_sp_artist_name;
fptr_sp_image_create_t fptr_sp_image_create;
fptr_sp_image_is_loaded_t fptr_sp_image_is_loaded;
fptr_sp_image_error_t fptr_sp_image_error;
fptr_sp_image_format_t fptr_sp_image_format;
fptr_sp_image_data_t fptr_sp_image_data;
fptr_sp_image_release_t fptr_sp_image_release;
fptr_sp_image_add_load_callback_t fptr_sp_image_add_load_callback;
fptr_sp_image_remove_load_callback_t fptr_sp_image_remove_load_callback;
fptr_sp_user_display_name_t fptr_sp_user_display_name;
fptr_sp_user_canonical_name_t fptr_sp_user_canonical_name;
/* Assign function pointers to libspotify symbol */
static int
fptr_assign_all()
{
void *h;
char *err;
int ret;
h = g_libhandle;
// The following is non-ISO compliant
ret = (fptr_sp_error_message = dlsym(h, "sp_error_message"))
&& (fptr_sp_session_create = dlsym(h, "sp_session_create"))
&& (fptr_sp_session_release = dlsym(h, "sp_session_release"))
&& (fptr_sp_session_login = dlsym(h, "sp_session_login"))
&& (fptr_sp_session_relogin = dlsym(h, "sp_session_relogin"))
&& (fptr_sp_session_logout = dlsym(h, "sp_session_logout"))
&& (fptr_sp_session_playlistcontainer = dlsym(h, "sp_session_playlistcontainer"))
&& (fptr_sp_session_process_events = dlsym(h, "sp_session_process_events"))
&& (fptr_sp_session_player_load = dlsym(h, "sp_session_player_load"))
&& (fptr_sp_session_player_unload = dlsym(h, "sp_session_player_unload"))
&& (fptr_sp_session_player_play = dlsym(h, "sp_session_player_play"))
&& (fptr_sp_session_player_seek = dlsym(h, "sp_session_player_seek"))
&& (fptr_sp_session_connectionstate = dlsym(h, "sp_session_connectionstate"))
&& (fptr_sp_session_preferred_bitrate = dlsym(h, "sp_session_preferred_bitrate"))
&& (fptr_sp_session_user_name = dlsym(h, "sp_session_user_name"))
&& (fptr_sp_playlistcontainer_add_callbacks = dlsym(h, "sp_playlistcontainer_add_callbacks"))
&& (fptr_sp_playlistcontainer_num_playlists = dlsym(h, "sp_playlistcontainer_num_playlists"))
&& (fptr_sp_session_starred_create = dlsym(h, "sp_session_starred_create"))
&& (fptr_sp_playlistcontainer_playlist = dlsym(h, "sp_playlistcontainer_playlist"))
&& (fptr_sp_playlist_add_callbacks = dlsym(h, "sp_playlist_add_callbacks"))
&& (fptr_sp_playlist_name = dlsym(h, "sp_playlist_name"))
&& (fptr_sp_playlist_remove_callbacks = dlsym(h, "sp_playlist_remove_callbacks"))
&& (fptr_sp_playlist_num_tracks = dlsym(h, "sp_playlist_num_tracks"))
&& (fptr_sp_playlist_track = dlsym(h, "sp_playlist_track"))
&& (fptr_sp_playlist_is_loaded = dlsym(h, "sp_playlist_is_loaded"))
&& (fptr_sp_playlist_track_create_time = dlsym(h, "sp_playlist_track_create_time"))
&& (fptr_sp_playlist_owner = dlsym(h, "sp_playlist_owner"))
&& (fptr_sp_track_error = dlsym(h, "sp_track_error"))
&& (fptr_sp_track_is_loaded = dlsym(h, "sp_track_is_loaded"))
&& (fptr_sp_track_name = dlsym(h, "sp_track_name"))
&& (fptr_sp_track_duration = dlsym(h, "sp_track_duration"))
&& (fptr_sp_track_index = dlsym(h, "sp_track_index"))
&& (fptr_sp_track_disc = dlsym(h, "sp_track_disc"))
&& (fptr_sp_track_album = dlsym(h, "sp_track_album"))
&& (fptr_sp_track_get_availability = dlsym(h, "sp_track_get_availability"))
&& (fptr_sp_track_is_starred = dlsym(h, "sp_track_is_starred"))
&& (fptr_sp_link_create_from_playlist = dlsym(h, "sp_link_create_from_playlist"))
&& (fptr_sp_link_create_from_track = dlsym(h, "sp_link_create_from_track"))
&& (fptr_sp_link_create_from_string = dlsym(h, "sp_link_create_from_string"))
&& (fptr_sp_link_as_string = dlsym(h, "sp_link_as_string"))
&& (fptr_sp_link_as_track = dlsym(h, "sp_link_as_track"))
&& (fptr_sp_link_release = dlsym(h, "sp_link_release"))
&& (fptr_sp_album_name = dlsym(h, "sp_album_name"))
&& (fptr_sp_album_artist = dlsym(h, "sp_album_artist"))
&& (fptr_sp_album_year = dlsym(h, "sp_album_year"))
&& (fptr_sp_album_type = dlsym(h, "sp_album_type"))
&& (fptr_sp_album_cover = dlsym(h, "sp_album_cover"))
&& (fptr_sp_artist_name = dlsym(h, "sp_artist_name"))
&& (fptr_sp_image_create = dlsym(h, "sp_image_create"))
&& (fptr_sp_image_is_loaded = dlsym(h, "sp_image_is_loaded"))
&& (fptr_sp_image_error = dlsym(h, "sp_image_error"))
&& (fptr_sp_image_format = dlsym(h, "sp_image_format"))
&& (fptr_sp_image_data = dlsym(h, "sp_image_data"))
&& (fptr_sp_image_release = dlsym(h, "sp_image_release"))
&& (fptr_sp_image_add_load_callback = dlsym(h, "sp_image_add_load_callback"))
&& (fptr_sp_image_remove_load_callback = dlsym(h, "sp_image_remove_load_callback"))
&& (fptr_sp_user_display_name = dlsym(h, "sp_user_display_name"))
&& (fptr_sp_user_canonical_name = dlsym(h, "sp_user_canonical_name"))
;
err = dlerror();
if (ret && !err)
return ret;
else if (err)
DPRINTF(E_LOG, L_SPOTIFY, "Assignment error (%d): %s\n", ret, err);
else
DPRINTF(E_LOG, L_SPOTIFY, "Unknown assignment error (%d)\n", ret);
return -1;
}
// End of ugly part
/* -------------------------- PLAYLIST HELPERS ------------------------- */
/* Should only be called from within the spotify thread */
// Registers a track with libspotify, which will make it start loading the track
// metadata. When that is done metadata_updated() is called (but we won't be
// told which track it was...). Note that this function will result in a ref
// count on the sp_link, which the caller must decrease with sp_link_release.
static enum command_state
uri_register(void *arg, int *retval)
{
sp_link *link;
sp_track *track;
char *uri = arg;
if (SP_CONNECTION_STATE_LOGGED_IN != fptr_sp_session_connectionstate(g_sess))
{
DPRINTF(E_LOG, L_SPOTIFY, "Can't register music, not connected and logged in to Spotify\n");
*retval = -1;
return COMMAND_END;
}
link = fptr_sp_link_create_from_string(uri);
if (!link)
{
DPRINTF(E_LOG, L_SPOTIFY, "Invalid Spotify link: '%s'\n", uri);
*retval = -1;
return COMMAND_END;
}
track = fptr_sp_link_as_track(link);
if (!track)
{
DPRINTF(E_LOG, L_SPOTIFY, "Invalid Spotify track: '%s'\n", uri);
*retval = -1;
return COMMAND_END;
}
*retval = 0;
return COMMAND_END;
}
static void
webapi_playlist_updated(sp_playlist *pl)
{
sp_link *link;
char url[1024];
int ret;
// Run playlist save in the library thread
link = fptr_sp_link_create_from_playlist(pl);
if (!link)
{
DPRINTF(E_LOG, L_SPOTIFY, "Could not create link for playlist: '%s'\n", fptr_sp_playlist_name(pl));
return;
}
ret = fptr_sp_link_as_string(link, url, sizeof(url));
if (ret == sizeof(url))
{
DPRINTF(E_DBG, L_SPOTIFY, "Spotify link truncated: %s\n", url);
}
fptr_sp_link_release(link);
spotifywebapi_pl_save(url);
}
/* -------------------------- PLAYLIST CALLBACKS ------------------------- */
/**
* Called when a playlist is updating or is done updating
*
* This is called before and after a series of changes are applied to the
* playlist. It allows e.g. the user interface to defer updating until the
* entire operation is complete.
*
* @param[in] pl Playlist object
* @param[in] done True iff the update is completed
* @param[in] userdata Userdata passed to sp_playlist_add_callbacks()
*/
static void playlist_update_in_progress(sp_playlist *pl, bool done, void *userdata)
{
if (done)
{
DPRINTF(E_DBG, L_SPOTIFY, "Playlist update (status %d): %s\n", done, fptr_sp_playlist_name(pl));
webapi_playlist_updated(pl);
}
}
static void playlist_metadata_updated(sp_playlist *pl, void *userdata)
{
DPRINTF(E_DBG, L_SPOTIFY, "Playlist metadata updated: %s\n", fptr_sp_playlist_name(pl));
//TODO Update disabled to prevent multiple triggering of updates e. g. on adding a playlist
}
/**
* The callbacks we are interested in for individual playlists.
*/
static sp_playlist_callbacks pl_callbacks = {
.playlist_update_in_progress = &playlist_update_in_progress,
.playlist_metadata_updated = &playlist_metadata_updated,
};
/* -------------------- PLAYLIST CONTAINER CALLBACKS --------------------- */
/**
* Callback from libspotify, telling us a playlist was added to the playlist container.
*
* We add our playlist callbacks to the newly added playlist.
*
* @param pc The playlist container handle
* @param pl The playlist handle
* @param position Index of the added playlist
* @param userdata The opaque pointer
*/
static void playlist_added(sp_playlistcontainer *pc, sp_playlist *pl,
int position, void *userdata)
{
DPRINTF(E_INFO, L_SPOTIFY, "Playlist added: %s (%d tracks)\n", fptr_sp_playlist_name(pl), fptr_sp_playlist_num_tracks(pl));
fptr_sp_playlist_add_callbacks(pl, &pl_callbacks, NULL);
webapi_playlist_updated(pl);
}
/**
* Callback from libspotify, telling us a playlist was removed from the playlist container.
*
* This is the place to remove our playlist callbacks.
*
* @param pc The playlist container handle
* @param pl The playlist handle
* @param position Index of the removed playlist
* @param userdata The opaque pointer
*/
static void
playlist_removed(sp_playlistcontainer *pc, sp_playlist *pl, int position, void *userdata)
{
sp_link *link;
char url[1024];
int ret;
DPRINTF(E_INFO, L_SPOTIFY, "Playlist removed: %s\n", fptr_sp_playlist_name(pl));
fptr_sp_playlist_remove_callbacks(pl, &pl_callbacks, NULL);
link = fptr_sp_link_create_from_playlist(pl);
if (!link)
{
DPRINTF(E_LOG, L_SPOTIFY, "Could not find link for deleted playlist\n");
return;
}
ret = fptr_sp_link_as_string(link, url, sizeof(url));
if (ret == sizeof(url))
{
DPRINTF(E_DBG, L_SPOTIFY, "Spotify link truncated: %s\n", url);
}
fptr_sp_link_release(link);
// Run playlist remove in the library thread
spotifywebapi_pl_remove(url);
}
/**
* Callback from libspotify, telling us the rootlist is fully synchronized
*
* @param pc The playlist container handle
* @param userdata The opaque pointer
*/
static void
container_loaded(sp_playlistcontainer *pc, void *userdata)
{
int num;
num = fptr_sp_playlistcontainer_num_playlists(pc);
DPRINTF(E_INFO, L_SPOTIFY, "Rootlist synchronized (%d playlists)\n", num);
}
/**
* The playlist container callbacks
*/
static sp_playlistcontainer_callbacks pc_callbacks = {
.playlist_added = &playlist_added,
.playlist_removed = &playlist_removed,
.container_loaded = &container_loaded,
};
/* --------------------- INTERNAL PLAYBACK AND AUDIO ----------------------- */
/* Should only be called from within the spotify thread */
static enum command_state
playback_setup(void *arg, int *retval)
{
sp_link *link;
sp_track *track;
sp_error err;
DPRINTF(E_DBG, L_SPOTIFY, "Setting up for playback\n");
link = (sp_link *) arg;
if (SP_CONNECTION_STATE_LOGGED_IN != fptr_sp_session_connectionstate(g_sess))
{
DPRINTF(E_LOG, L_SPOTIFY, "Can't play music, not connected and logged in to Spotify\n");
*retval = -1;
return COMMAND_END;
}
if (!link)
{
DPRINTF(E_LOG, L_SPOTIFY, "Playback setup failed, no Spotify link\n");
*retval = -1;
return COMMAND_END;
}
track = fptr_sp_link_as_track(link);
if (!track)
{
DPRINTF(E_LOG, L_SPOTIFY, "Playback setup failed, invalid Spotify track\n");
*retval = -1;
return COMMAND_END;
}
err = fptr_sp_session_player_load(g_sess, track);
if (SP_ERROR_OK != err)
{
DPRINTF(E_LOG, L_SPOTIFY, "Playback setup failed: %s\n", fptr_sp_error_message(err));
*retval = (SP_ERROR_IS_LOADING == err) ? LIBSPOTIFY_SETUP_ERROR_IS_LOADING : -1;
return COMMAND_END;
}
*retval = 0;
return COMMAND_END;
}
static enum command_state
playback_play(void *arg, int *retval)
{
sp_error err;
DPRINTF(E_DBG, L_SPOTIFY, "Starting playback\n");
err = fptr_sp_session_player_play(g_sess, 1);
if (SP_ERROR_OK != err)
{
DPRINTF(E_LOG, L_SPOTIFY, "Playback failed: %s\n", fptr_sp_error_message(err));
*retval = -1;
return COMMAND_END;
}
g_state = SPOTIFY_STATE_PLAYING;
*retval = 0;
return COMMAND_END;
}
static enum command_state
playback_pause(void *arg, int *retval)
{
sp_error err;
DPRINTF(E_DBG, L_SPOTIFY, "Pausing playback\n");
err = fptr_sp_session_player_play(g_sess, 0);
DPRINTF(E_DBG, L_SPOTIFY, "Playback paused\n");
if (SP_ERROR_OK != err)
{
DPRINTF(E_LOG, L_SPOTIFY, "Playback pause failed: %s\n", fptr_sp_error_message(err));
*retval = -1;
return COMMAND_END;
}
g_state = SPOTIFY_STATE_PAUSED;
*retval = 0;
return COMMAND_END;
}
static enum command_state
playback_stop(void *arg, int *retval)
{
sp_error err;
DPRINTF(E_DBG, L_SPOTIFY, "Stopping playback\n");
err = fptr_sp_session_player_unload(g_sess);
if (SP_ERROR_OK != err)
{
DPRINTF(E_LOG, L_SPOTIFY, "Playback stop failed: %s\n", fptr_sp_error_message(err));
*retval = -1;
return COMMAND_END;
}
g_state = SPOTIFY_STATE_STOPPED;
evbuffer_drain(spotify_audio_buffer, evbuffer_get_length(spotify_audio_buffer));
*retval = 0;
return COMMAND_END;
}
static enum command_state
playback_seek(void *arg, int *retval)
{
int seek_ms;
sp_error err;
DPRINTF(E_DBG, L_SPOTIFY, "Playback seek\n");
seek_ms = *((int *) arg);
err = fptr_sp_session_player_seek(g_sess, seek_ms);
if (SP_ERROR_OK != err)
{
DPRINTF(E_LOG, L_SPOTIFY, "Could not seek: %s\n", fptr_sp_error_message(err));
*retval = -1;
return COMMAND_END;
}
*retval = 0;
return COMMAND_END;
}
static enum command_state
playback_eot(void *arg, int *retval)
{
sp_error err;
DPRINTF(E_DBG, L_SPOTIFY, "Playback end of track\n");
err = fptr_sp_session_player_unload(g_sess);
if (SP_ERROR_OK != err)
{
DPRINTF(E_LOG, L_SPOTIFY, "Playback end of track failed: %s\n", fptr_sp_error_message(err));
*retval = -1;
return COMMAND_END;
}
g_state = SPOTIFY_STATE_STOPPING;
input_write(spotify_audio_buffer, NULL, INPUT_FLAG_EOF);
*retval = 0;
return COMMAND_END;
}
static void
artwork_loaded_cb(sp_image *image, void *userdata)
{
struct artwork_get_param *artwork;
artwork = userdata;
CHECK_ERR(L_SPOTIFY, pthread_mutex_lock(&artwork->mutex));
artwork->is_loaded = 1;
CHECK_ERR(L_SPOTIFY, pthread_cond_signal(&artwork->cond));
CHECK_ERR(L_SPOTIFY, pthread_mutex_unlock(&artwork->mutex));
}
static enum command_state
artwork_get_bh(void *arg, int *retval)
{
struct artwork_get_param *artwork;
sp_imageformat imageformat;
sp_error err;
const void *data;
char *path;
size_t data_size;
int ret;
artwork = arg;
sp_image *image = artwork->image;
path = artwork->path;
fptr_sp_image_remove_load_callback(image, artwork_loaded_cb, artwork);
err = fptr_sp_image_error(image);
if (err != SP_ERROR_OK)
{
DPRINTF(E_WARN, L_SPOTIFY, "Getting artwork (%s) failed, Spotify error: %s\n", path, fptr_sp_error_message(err));
goto fail;
}
if (!fptr_sp_image_is_loaded(image))
{
DPRINTF(E_LOG, L_SPOTIFY, "Load callback returned, but no image? Possible bug: %s\n", path);
goto fail;
}
imageformat = fptr_sp_image_format(image);
if (imageformat != SP_IMAGE_FORMAT_JPEG)
{
DPRINTF(E_WARN, L_SPOTIFY, "Getting artwork failed, invalid image format from Spotify: %s\n", path);
goto fail;
}
data_size = 0;
data = fptr_sp_image_data(image, &data_size);
if (!data)
{
DPRINTF(E_LOG, L_SPOTIFY, "Getting artwork failed, no image data from Spotify: %s\n", path);
goto fail;
}
if ((data_size < 200) || (data_size > 20000000))
{
// Sometimes we get strange data size even though fptr_sp_image_data returns success
DPRINTF(E_LOG, L_SPOTIFY, "Skipping artwork, data size is weird (%zu)\n", data_size);
goto fail;
}
ret = evbuffer_expand(artwork->evbuf, data_size);
if (ret < 0)
{
DPRINTF(E_LOG, L_SPOTIFY, "Out of memory for artwork (data size requested was %zu)\n", data_size);
goto fail;
}
ret = evbuffer_add(artwork->evbuf, data, data_size);
if (ret < 0)
{
DPRINTF(E_LOG, L_SPOTIFY, "Could not add Spotify image to event buffer\n");
goto fail;
}
DPRINTF(E_DBG, L_SPOTIFY, "Spotify artwork loaded ok\n");
fptr_sp_image_release(image);
*retval = 0;
return COMMAND_END;
fail:
fptr_sp_image_release(image);
*retval = -1;
return COMMAND_END;
}
static enum command_state
artwork_get(void *arg, int *retval)
{
struct artwork_get_param *artwork;
char *path;
sp_link *link;
sp_track *track;
sp_album *album;
const byte *image_id;
sp_image *image;
sp_image_size image_size;
sp_error err;
artwork = arg;
path = artwork->path;
// Now begins: path -> link -> track -> album -> image_id -> image -> format -> data
link = fptr_sp_link_create_from_string(path);
if (!link)
{
DPRINTF(E_WARN, L_SPOTIFY, "Getting artwork failed, invalid Spotify link: %s\n", path);
goto level1_exit;
}
track = fptr_sp_link_as_track(link);
if (!track)
{
DPRINTF(E_WARN, L_SPOTIFY, "Getting artwork failed, invalid Spotify track: %s\n", path);
goto level2_exit;
}
album = fptr_sp_track_album(track);
if (!album)
{
DPRINTF(E_WARN, L_SPOTIFY, "Getting artwork failed, invalid Spotify album: %s\n", path);
goto level2_exit;
}
// Get an image at least the same size as requested
image_size = SP_IMAGE_SIZE_SMALL; // 64x64
if ((artwork->max_w > 64) || (artwork->max_h > 64))
image_size = SP_IMAGE_SIZE_NORMAL; // 300x300
if ((artwork->max_w > 300) || (artwork->max_h > 300))
image_size = SP_IMAGE_SIZE_LARGE; // 640x640
image_id = fptr_sp_album_cover(album, image_size);
if (!image_id)
{
DPRINTF(E_DBG, L_SPOTIFY, "Getting artwork failed, no Spotify image id: %s\n", path);
goto level2_exit;
}
image = fptr_sp_image_create(g_sess, image_id);
if (!image)
{
DPRINTF(E_DBG, L_SPOTIFY, "Getting artwork failed, no Spotify image: %s\n", path);
goto level2_exit;
}
fptr_sp_link_release(link);
artwork->image = image;
artwork->is_loaded = fptr_sp_image_is_loaded(image);
/* If the image is ready we can return it straight away, otherwise we will
* let the calling thread wait, since the Spotify thread should not wait
*/
if (artwork->is_loaded)
return artwork_get_bh(artwork, retval);
DPRINTF(E_SPAM, L_SPOTIFY, "Will wait for Spotify to call artwork_loaded_cb\n");
/* Async - we will return to spotify_artwork_get which will wait for callback */
err = fptr_sp_image_add_load_callback(image, artwork_loaded_cb, artwork);
if (err != SP_ERROR_OK)
{
DPRINTF(E_WARN, L_SPOTIFY, "Adding artwork cb failed, Spotify error: %s\n", fptr_sp_error_message(err));
*retval = -1;
return COMMAND_END;
}
*retval = 0;
return COMMAND_END;
level2_exit:
fptr_sp_link_release(link);
level1_exit:
*retval = -1;
return COMMAND_END;
}
/* --------------------------- SESSION CALLBACKS ------------------------- */
/**
* This callback is called when an attempt to login has succeeded or failed.
*
* @sa sp_session_callbacks#logged_in
*/
static void
logged_in(sp_session *sess, sp_error error)
{
sp_playlist *pl;
sp_playlistcontainer *pc;
int i;
CHECK_ERR(L_SPOTIFY, pthread_mutex_lock(&login_lck));
if (SP_ERROR_OK != error)
{
DPRINTF(E_LOG, L_SPOTIFY, "Login failed: %s\n", fptr_sp_error_message(error));
CHECK_ERR(L_SPOTIFY, pthread_mutex_lock(&status_lck));
spotify_status_info.libspotify_logged_in = false;
spotify_status_info.libspotify_user[0] = '\0';
CHECK_ERR(L_SPOTIFY, pthread_mutex_unlock(&status_lck));
CHECK_ERR(L_SPOTIFY, pthread_cond_signal(&login_cond));
CHECK_ERR(L_SPOTIFY, pthread_mutex_unlock(&login_lck));
listener_notify(LISTENER_SPOTIFY);
return;
}
DPRINTF(E_LOG, L_SPOTIFY, "Login to Spotify succeeded (libspotify)\n");
pl = fptr_sp_session_starred_create(sess);
fptr_sp_playlist_add_callbacks(pl, &pl_callbacks, NULL);
pc = fptr_sp_session_playlistcontainer(sess);
fptr_sp_playlistcontainer_add_callbacks(pc, &pc_callbacks, NULL);
DPRINTF(E_DBG, L_SPOTIFY, "Found %d playlists\n", fptr_sp_playlistcontainer_num_playlists(pc));
for (i = 0; i < fptr_sp_playlistcontainer_num_playlists(pc); i++)
{
pl = fptr_sp_playlistcontainer_playlist(pc, i);
fptr_sp_playlist_add_callbacks(pl, &pl_callbacks, NULL);
}
CHECK_ERR(L_SPOTIFY, pthread_mutex_lock(&status_lck));
spotify_status_info.libspotify_logged_in = true;
snprintf(spotify_status_info.libspotify_user, sizeof(spotify_status_info.libspotify_user), "%s", fptr_sp_session_user_name(sess));
spotify_status_info.libspotify_user[sizeof(spotify_status_info.libspotify_user) - 1] = '\0';
CHECK_ERR(L_SPOTIFY, pthread_mutex_unlock(&status_lck));
CHECK_ERR(L_SPOTIFY, pthread_cond_signal(&login_cond));
CHECK_ERR(L_SPOTIFY, pthread_mutex_unlock(&login_lck));
listener_notify(LISTENER_SPOTIFY);
}
/**
* Called when logout has been processed.
* Either called explicitly if you initialize a logout operation, or implicitly
* if there is a permanent connection error
*
* @sa sp_session_callbacks#logged_out
*/
static void
logged_out(sp_session *sess)
{
DPRINTF(E_INFO, L_SPOTIFY, "Logout complete\n");
CHECK_ERR(L_SPOTIFY, pthread_mutex_lock(&status_lck));
spotify_status_info.libspotify_logged_in = false;
spotify_status_info.libspotify_user[0] = '\0';
CHECK_ERR(L_SPOTIFY, pthread_mutex_unlock(&status_lck));
CHECK_ERR(L_SPOTIFY, pthread_mutex_lock(&login_lck));
CHECK_ERR(L_SPOTIFY, pthread_cond_signal(&login_cond));
CHECK_ERR(L_SPOTIFY, pthread_mutex_unlock(&login_lck));
listener_notify(LISTENER_SPOTIFY);
}
/**
* This callback is used from libspotify whenever there is PCM data available.
*
* @sa sp_session_callbacks#music_delivery
*/
static int music_delivery(sp_session *sess, const sp_audioformat *format,
const void *frames, int num_frames)
{
struct media_quality quality = { 0 };
size_t size;
int ret;
/* No support for resampling right now */
if ((format->sample_type != SP_SAMPLETYPE_INT16_NATIVE_ENDIAN) || (format->channels != 2))
{
DPRINTF(E_LOG, L_SPOTIFY, "Got music with unsupported sample format or number of channels, stopping playback\n");
libspotify_playback_stop_nonblock();
return num_frames;
}
quality.sample_rate = format->sample_rate;
quality.bits_per_sample = 16;
quality.channels = format->channels;
// Audio discontinuity, e.g. seek
if (num_frames == 0)
{
evbuffer_drain(spotify_audio_buffer, evbuffer_get_length(spotify_audio_buffer));
return 0;
}
size = num_frames * sizeof(int16_t) * format->channels;
ret = evbuffer_add(spotify_audio_buffer, frames, size);
if (ret < 0)
{
DPRINTF(E_LOG, L_SPOTIFY, "Out of memory adding audio to buffer\n");
return num_frames;
}
// The input buffer only accepts writing when it is approaching depletion, and
// because we use NONBLOCK it will just return if this is not the case. So in
// most cases no actual write is made and spotify_audio_buffer will just grow.
input_write(spotify_audio_buffer, &quality, 0);
return num_frames;
}
/**
* This callback is called from an internal libspotify thread to ask us to
* reiterate the main loop. This must not block.
*
* @sa sp_session_callbacks#notify_main_thread
*/
static void
notify_main_thread(sp_session *sess)
{
int dummy = 42;
int ret;
ret = write(g_notify_pipe[1], &dummy, sizeof(dummy));
if (ret != sizeof(dummy))
DPRINTF(E_LOG, L_SPOTIFY, "Could not write to notify fd: %s\n", strerror(errno));
}
/**
* Called whenever metadata has been updated
*
* If you have metadata cached outside of libspotify, you should purge
* your caches and fetch new versions.
*
* @param[in] session Session
*/
static void metadata_updated(sp_session *session)
{
DPRINTF(E_DBG, L_SPOTIFY, "Session metadata updated\n");
}
/* Misc connection error callbacks */
static void play_token_lost(sp_session *sess)
{
DPRINTF(E_LOG, L_SPOTIFY, "Music interrupted - some other session is playing on the account\n");
libspotify_playback_stop_nonblock();
}
static void connectionstate_updated(sp_session *session)
{
if (SP_CONNECTION_STATE_LOGGED_IN == fptr_sp_session_connectionstate(session))
{
DPRINTF(E_LOG, L_SPOTIFY, "Connection to Spotify (re)established (libspotify)\n");
}
else if (g_state == SPOTIFY_STATE_PLAYING)
{
DPRINTF(E_LOG, L_SPOTIFY, "Music interrupted - connection error or logged out\n");
libspotify_playback_stop_nonblock();
}
}
/**
* This callback is used from libspotify when the current track has ended
*
* @sa sp_session_callbacks#end_of_track
*/
static void end_of_track(sp_session *sess)
{
DPRINTF(E_DBG, L_SPOTIFY, "End of track\n");
commands_exec_async(cmdbase, playback_eot, NULL);
}
/**
* The session callbacks
*/
static sp_session_callbacks session_callbacks = {
.logged_in = &logged_in,
.logged_out = &logged_out,
.connectionstate_updated = &connectionstate_updated,
.notify_main_thread = &notify_main_thread,
.music_delivery = &music_delivery,
.metadata_updated = &metadata_updated,
.play_token_lost = &play_token_lost,
.log_message = NULL,
.end_of_track = &end_of_track,
};
/**
* The session configuration.
*/
static sp_session_config spconfig = {
.api_version = SPOTIFY_API_VERSION,
.cache_location = NULL,
.settings_location = NULL,
.application_key = g_appkey,
.application_key_size = sizeof(g_appkey),
.user_agent = "forked-daapd",
.callbacks = &session_callbacks,
NULL,
};
/* ------------------------------- MAIN LOOP ------------------------------- */
/* Thread: spotify */
static void *
spotify(void *arg)
{
int ret;
DPRINTF(E_DBG, L_SPOTIFY, "Main loop initiating\n");
ret = db_perthread_init();
if (ret < 0)
{
DPRINTF(E_LOG, L_SPOTIFY, "Error: DB init failed\n");
pthread_exit(NULL);
}
g_state = SPOTIFY_STATE_WAIT;
event_base_dispatch(evbase_spotify);
if (g_state != SPOTIFY_STATE_INACTIVE)
{
DPRINTF(E_LOG, L_SPOTIFY, "Spotify event loop terminated ahead of time!\n");
g_state = SPOTIFY_STATE_INACTIVE;
}
db_perthread_deinit();
DPRINTF(E_DBG, L_SPOTIFY, "Main loop terminating\n");
pthread_exit(NULL);
}
static void
exit_cb()
{
fptr_sp_session_player_unload(g_sess);
fptr_sp_session_logout(g_sess);
g_state = SPOTIFY_STATE_INACTIVE;
}
/* Process events when timeout expires or triggered by libspotify's notify_main_thread */
static void
notify_cb(int fd, short what, void *arg)
{
struct timeval tv;
int next_timeout;
int dummy;
int ret;
if (what & EV_READ)
{
ret = read(g_notify_pipe[0], &dummy, sizeof(dummy));
if (ret != sizeof(dummy))
DPRINTF(E_LOG, L_SPOTIFY, "Error reading from notify pipe\n");
}
do
{
fptr_sp_session_process_events(g_sess, &next_timeout);
}
while (next_timeout == 0);
tv.tv_sec = next_timeout / 1000;
tv.tv_usec = (next_timeout % 1000) * 1000;
event_add(g_notifyev, &tv);
}
/* ---------------------------- Our Spotify API --------------------------- */
/* Thread: player */
int
libspotify_playback_setup(const char *path)
{
sp_link *link;
DPRINTF(E_DBG, L_SPOTIFY, "Playback setup request\n");
link = fptr_sp_link_create_from_string(path);
if (!link)
{
DPRINTF(E_LOG, L_SPOTIFY, "Playback setup failed, invalid Spotify link: %s\n", path);
return -1;
}
return commands_exec_sync(cmdbase, playback_setup, NULL, link);
}
int
libspotify_playback_play()
{
DPRINTF(E_DBG, L_SPOTIFY, "Playback request\n");
return commands_exec_sync(cmdbase, playback_play, NULL, NULL);
}
int
libspotify_playback_pause()
{
DPRINTF(E_DBG, L_SPOTIFY, "Pause request\n");
return commands_exec_sync(cmdbase, playback_pause, NULL, NULL);
}
/* Thread: libspotify */
void
libspotify_playback_pause_nonblock(void)
{
DPRINTF(E_DBG, L_SPOTIFY, "Nonblock pause request\n");
commands_exec_async(cmdbase, playback_pause, NULL);
}
/* Thread: player and libspotify */
int
libspotify_playback_stop(void)
{
DPRINTF(E_DBG, L_SPOTIFY, "Stop request\n");
return commands_exec_sync(cmdbase, playback_stop, NULL, NULL);
}
/* Thread: player and libspotify */
void
libspotify_playback_stop_nonblock(void)
{
DPRINTF(E_DBG, L_SPOTIFY, "Nonblock stop request\n");
commands_exec_async(cmdbase, playback_stop, NULL);
}
/* Thread: player */
int
libspotify_playback_seek(int ms)
{
int ret;
ret = commands_exec_sync(cmdbase, playback_seek, NULL, &ms);
if (ret == 0)
return ms;
else
return -1;
}
/* Thread: httpd (artwork) and worker */
int
libspotify_artwork_get(struct evbuffer *evbuf, char *path, int max_w, int max_h)
{
struct artwork_get_param artwork;
struct timespec ts;
int ret;
artwork.evbuf = evbuf;
artwork.path = path;
artwork.max_w = max_w;
artwork.max_h = max_h;
CHECK_ERR(L_SPOTIFY, mutex_init(&artwork.mutex));
CHECK_ERR(L_SPOTIFY, pthread_cond_init(&artwork.cond, NULL));
ret = commands_exec_sync(cmdbase, artwork_get, NULL, &artwork);
// Artwork was not ready, wait for callback from libspotify
if (ret == 0)
{
CHECK_ERR(L_SPOTIFY, pthread_mutex_lock(&artwork.mutex));
ts = timespec_reltoabs(spotify_artwork_timeout);
while ((!artwork.is_loaded) && (ret != ETIMEDOUT))
CHECK_ERR_EXCEPT(L_SPOTIFY, pthread_cond_timedwait(&artwork.cond, &artwork.mutex, &ts), ret, ETIMEDOUT);
if (ret == ETIMEDOUT)
DPRINTF(E_LOG, L_SPOTIFY, "Timeout waiting for artwork from Spotify\n");
CHECK_ERR(L_SPOTIFY, pthread_mutex_unlock(&artwork.mutex));
ret = commands_exec_sync(cmdbase, artwork_get_bh, NULL, &artwork);
}
return ret;
}
/* Thread: httpd */
void
libspotify_uri_register(const char *uri)
{
char *tmp;
tmp = strdup(uri);
commands_exec_async(cmdbase, uri_register, tmp);
}
void
libspotify_status_info_get(struct spotify_status_info *info)
{
CHECK_ERR(L_SPOTIFY, pthread_mutex_lock(&status_lck));
memcpy(info, &spotify_status_info, sizeof(struct spotify_status_info));
CHECK_ERR(L_SPOTIFY, pthread_mutex_unlock(&status_lck));
}
/* Thread: library, httpd */
static int
logout(const char **errmsg)
{
sp_error err;
CHECK_ERR(L_SPOTIFY, pthread_mutex_lock(&login_lck));
if (SP_CONNECTION_STATE_LOGGED_IN != fptr_sp_session_connectionstate(g_sess))
{
CHECK_ERR(L_SPOTIFY, pthread_mutex_unlock(&login_lck));
return 0;
}
DPRINTF(E_LOG, L_SPOTIFY, "Logging out of Spotify (current state is %d)\n", g_state);
fptr_sp_session_player_unload(g_sess);
err = fptr_sp_session_logout(g_sess);
if (SP_ERROR_OK != err)
{
DPRINTF(E_LOG, L_SPOTIFY, "Could not logout of Spotify: %s\n", fptr_sp_error_message(err));
if (errmsg)
*errmsg = fptr_sp_error_message(err);
CHECK_ERR(L_SPOTIFY, pthread_mutex_unlock(&login_lck));
return -1;
}
CHECK_ERR(L_SPOTIFY, pthread_cond_wait(&login_cond, &login_lck)); // Wait for logged_out()
CHECK_ERR(L_SPOTIFY, pthread_mutex_unlock(&login_lck));
return 0;
}
/* Thread: library, httpd */
static int
login_user(const char *user, const char *password, const char **errmsg)
{
sp_error err;
int ret;
if (!g_sess)
{
if (!g_libhandle)
{
DPRINTF(E_LOG, L_SPOTIFY, "Can't login! - could not find libspotify\n");
if (errmsg)
*errmsg = "Could not find libspotify";
}
else
{
DPRINTF(E_LOG, L_SPOTIFY, "Can't login! - no valid Spotify session\n");
if (errmsg)
*errmsg = "No valid Spotify session";
}
return -1;
}
ret = logout(errmsg);
if (ret < 0)
return -1;
CHECK_ERR(L_SPOTIFY, pthread_mutex_lock(&login_lck));
if (user && password)
{
DPRINTF(E_LOG, L_SPOTIFY, "Spotify credentials, logging in with username '%s' (libspotify)\n", user);
err = fptr_sp_session_login(g_sess, user, password, 1, NULL);
}
else
{
DPRINTF(E_INFO, L_SPOTIFY, "Relogin to Spotify\n");
err = fptr_sp_session_relogin(g_sess);
}
if (SP_ERROR_OK != err)
{
DPRINTF(E_LOG, L_SPOTIFY, "Could not login into Spotify: %s\n", fptr_sp_error_message(err));
if (errmsg)
*errmsg = fptr_sp_error_message(err);
CHECK_ERR(L_SPOTIFY, pthread_mutex_unlock(&login_lck));
return -1;
}
CHECK_ERR(L_SPOTIFY, pthread_cond_wait(&login_cond, &login_lck));
CHECK_ERR(L_SPOTIFY, pthread_mutex_unlock(&login_lck));
CHECK_ERR(L_SPOTIFY, pthread_mutex_lock(&status_lck));
ret = spotify_status_info.libspotify_logged_in ? 0 : -1;
CHECK_ERR(L_SPOTIFY, pthread_mutex_unlock(&status_lck));
if (ret < 0 && errmsg)
*errmsg = "Login failed";
return ret;
}
/* Thread: httpd, library */
int
libspotify_login(const char *user, const char *password, const char **errmsg)
{
int ret;
ret = login_user(user, password, errmsg);
if (ret == 0)
{
// Trigger scan after successful login to libspotify
spotifywebapi_rescan();
}
return ret;
}
/* Thread: library */
int
libspotify_relogin(void)
{
return login_user(NULL, NULL, NULL);
}
void
libspotify_logout(void)
{
logout(NULL);
}
/* Thread: main */
int
libspotify_init(void)
{
cfg_t *spotify_cfg;
sp_session *sp;
sp_error err;
int ret;
/* Initialize libspotify */
g_libhandle = dlopen("libspotify.so", RTLD_LAZY);
if (!g_libhandle)
{
DPRINTF(E_INFO, L_SPOTIFY, "libspotify.so not installed or not found\n");
goto libspotify_fail;
}
ret = fptr_assign_all();
if (ret < 0)
goto assign_fail;
#ifdef HAVE_PIPE2
ret = pipe2(g_notify_pipe, O_CLOEXEC);
#else
ret = pipe(g_notify_pipe);
#endif
if (ret < 0)
{
DPRINTF(E_LOG, L_SPOTIFY, "Could not notify command pipe: %s\n", strerror(errno));
goto notify_fail;
}
evbase_spotify = event_base_new();
if (!evbase_spotify)
{
DPRINTF(E_LOG, L_SPOTIFY, "Could not create an event base\n");
goto evbase_fail;
}
g_notifyev = event_new(evbase_spotify, g_notify_pipe[0], EV_READ | EV_TIMEOUT, notify_cb, NULL);
if (!g_notifyev)
{
DPRINTF(E_LOG, L_SPOTIFY, "Could not create notify event\n");
goto evnew_fail;
}
event_add(g_notifyev, NULL);
cmdbase = commands_base_new(evbase_spotify, exit_cb);
if (!cmdbase)
{
DPRINTF(E_LOG, L_SPOTIFY, "Could not create command base\n");
goto cmd_fail;
}
DPRINTF(E_INFO, L_SPOTIFY, "Spotify session init\n");
spotify_cfg = cfg_getsec(cfg, "spotify");
spconfig.settings_location = cfg_getstr(spotify_cfg, "settings_dir");
spconfig.cache_location = cfg_getstr(spotify_cfg, "cache_dir");
DPRINTF(E_DBG, L_SPOTIFY, "Creating Spotify session\n");
err = fptr_sp_session_create(&spconfig, &sp);
if (SP_ERROR_OK != err)
{
DPRINTF(E_LOG, L_SPOTIFY, "Could not create Spotify session: %s\n", fptr_sp_error_message(err));
goto session_fail;
}
g_sess = sp;
g_state = SPOTIFY_STATE_INACTIVE;
switch (cfg_getint(spotify_cfg, "bitrate"))
{
case 1:
fptr_sp_session_preferred_bitrate(g_sess, SP_BITRATE_96k);
break;
case 2:
fptr_sp_session_preferred_bitrate(g_sess, SP_BITRATE_160k);
break;
case 3:
fptr_sp_session_preferred_bitrate(g_sess, SP_BITRATE_320k);
break;
}
CHECK_ERR(L_SPOTIFY, pthread_mutex_lock(&status_lck));
spotify_status_info.libspotify_installed = true;
CHECK_ERR(L_SPOTIFY, pthread_mutex_unlock(&status_lck));
spotify_audio_buffer = evbuffer_new();
CHECK_ERR(L_SPOTIFY, evbuffer_enable_locking(spotify_audio_buffer, NULL));
CHECK_ERR(L_SPOTIFY, mutex_init(&login_lck));
CHECK_ERR(L_SPOTIFY, pthread_cond_init(&login_cond, NULL));
/* Spawn thread */
ret = pthread_create(&tid_spotify, NULL, spotify, NULL);
if (ret < 0)
{
DPRINTF(E_FATAL, L_SPOTIFY, "Could not spawn Spotify thread: %s\n", strerror(errno));
goto thread_fail;
}
thread_setname(tid_spotify, "spotify");
DPRINTF(E_DBG, L_SPOTIFY, "Spotify init complete\n");
return 0;
thread_fail:
CHECK_ERR(L_SPOTIFY, pthread_mutex_destroy(&status_lck));
CHECK_ERR(L_SPOTIFY, pthread_cond_destroy(&login_cond));
CHECK_ERR(L_SPOTIFY, pthread_mutex_destroy(&login_lck));
evbuffer_free(spotify_audio_buffer);
fptr_sp_session_release(g_sess);
g_sess = NULL;
session_fail:
cmd_fail:
event_free(g_notifyev);
evnew_fail:
commands_base_free(cmdbase);
event_base_free(evbase_spotify);
evbase_spotify = NULL;
evbase_fail:
close(g_notify_pipe[0]);
close(g_notify_pipe[1]);
notify_fail:
assign_fail:
dlclose(g_libhandle);
g_libhandle = NULL;
libspotify_fail:
return -1;
}
void
libspotify_deinit(void)
{
int ret;
if (!g_libhandle)
return;
/* Send exit signal to thread (if active) */
if (g_state != SPOTIFY_STATE_INACTIVE)
{
commands_base_destroy(cmdbase);
g_state = SPOTIFY_STATE_INACTIVE;
ret = pthread_join(tid_spotify, NULL);
if (ret != 0)
{
DPRINTF(E_FATAL, L_SPOTIFY, "Could not join Spotify thread: %s\n", strerror(errno));
return;
}
}
/* Release session */
fptr_sp_session_release(g_sess);
/* Free event base */
event_free(g_notifyev);
event_base_free(evbase_spotify);
/* Close pipes */
close(g_notify_pipe[0]);
close(g_notify_pipe[1]);
/* Destroy locks */
CHECK_ERR(L_SPOTIFY, pthread_mutex_destroy(&status_lck));
CHECK_ERR(L_SPOTIFY, pthread_cond_destroy(&login_cond));
CHECK_ERR(L_SPOTIFY, pthread_mutex_destroy(&login_lck));
/* Free audio buffer */
evbuffer_free(spotify_audio_buffer);
/* Release libspotify handle */
dlclose(g_libhandle);
}
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