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owntone-server/src/spotify.c

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/*
* Copyright (C) 2014 Espen Jürgensen <espenjurgensen@gmail.com>
*
* Stiched together from libspotify examples
*
* 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 <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 "spotify.h"
#include "logger.h"
#include "conffile.h"
#include "filescanner.h"
/* How long to wait for audio (in sec) before giving up */
#define SPOTIFY_TIMEOUT 20
/* --- Types --- */
typedef struct audio_fifo_data
{
TAILQ_ENTRY(audio_fifo_data) link;
int nsamples;
int16_t samples[0];
} audio_fifo_data_t;
typedef struct audio_fifo
{
TAILQ_HEAD(, audio_fifo_data) q;
int qlen;
int fullcount;
pthread_mutex_t mutex;
pthread_cond_t cond;
} audio_fifo_t;
enum spotify_state
{
SPOTIFY_STATE_INACTIVE,
SPOTIFY_STATE_WAIT,
SPOTIFY_STATE_PLAYING,
SPOTIFY_STATE_PAUSED,
SPOTIFY_STATE_STOPPING,
SPOTIFY_STATE_STOPPED,
};
struct audio_get_param
{
struct evbuffer *evbuf;
int wanted;
};
struct artwork_get_param
{
struct evbuffer *evbuf;
char *path;
int max_w;
int max_h;
};
struct spotify_command;
typedef int (*cmd_func)(struct spotify_command *cmd);
struct spotify_command
{
pthread_mutex_t lck;
pthread_cond_t cond;
cmd_func func;
cmd_func func_bh;
int nonblock;
union {
void *noarg;
sp_link *link;
int seek_ms;
struct audio_get_param audio;
struct artwork_get_param artwork;
} arg;
int ret;
};
/* --- 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_exit_pipe[2];
static int g_cmd_pipe[2];
static int g_notify_pipe[2];
static struct event *g_exitev;
static struct event *g_cmdev;
static struct event *g_notifyev;
// The global session handle
static sp_session *g_sess;
// The global library handle
static void *g_libhandle;
// The global state telling us what the thread is currently doing
static enum spotify_state g_state;
/* (not used) Tells which commmand is currently being processed */
static struct spotify_command *g_cmd;
// The global base playlist id (parent of all Spotify playlists in the db)
static int g_base_plid;
// Audio fifo
static audio_fifo_t *g_audio_fifo;
/**
* 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 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_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);
/* 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_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_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;
/* 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_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_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"))
;
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
/* ---------------------------- COMMAND EXECUTION -------------------------- */
static void
command_init(struct spotify_command *cmd)
{
memset(cmd, 0, sizeof(struct spotify_command));
pthread_mutex_init(&cmd->lck, NULL);
pthread_cond_init(&cmd->cond, NULL);
}
static void
command_deinit(struct spotify_command *cmd)
{
pthread_cond_destroy(&cmd->cond);
pthread_mutex_destroy(&cmd->lck);
}
static int
send_command(struct spotify_command *cmd)
{
int ret;
if (!cmd->func)
{
DPRINTF(E_LOG, L_SPOTIFY, "BUG: cmd->func is NULL!\n");
return -1;
}
ret = write(g_cmd_pipe[1], &cmd, sizeof(cmd));
if (ret != sizeof(cmd))
{
DPRINTF(E_LOG, L_SPOTIFY, "Could not send command: %s\n", strerror(errno));
return -1;
}
return 0;
}
static int
sync_command(struct spotify_command *cmd)
{
int ret;
pthread_mutex_lock(&cmd->lck);
ret = send_command(cmd);
if (ret < 0)
{
pthread_mutex_unlock(&cmd->lck);
return -1;
}
pthread_cond_wait(&cmd->cond, &cmd->lck);
pthread_mutex_unlock(&cmd->lck);
ret = cmd->ret;
return ret;
}
static int
nonblock_command(struct spotify_command *cmd)
{
int ret;
ret = send_command(cmd);
if (ret < 0)
return -1;
return 0;
}
/* Thread: main and filescanner */
static void
thread_exit(void)
{
int dummy = 42;
DPRINTF(E_DBG, L_SPOTIFY, "Killing Spotify thread\n");
if (write(g_exit_pipe[1], &dummy, sizeof(dummy)) != sizeof(dummy))
DPRINTF(E_LOG, L_SPOTIFY, "Could not write to exit fd: %s\n", strerror(errno));
}
/* -------------------------- PLAYLIST HELPERS ------------------------- */
/* Should only be called from within the spotify thread */
static int
spotify_metadata_get(sp_track *track, struct media_file_info *mfi, const char *pltitle, int time_added)
{
cfg_t *spotify_cfg;
bool artist_override;
bool starred_artist_override;
bool album_override;
bool starred_album_override;
sp_album *album;
sp_artist *artist;
sp_albumtype albumtype;
bool starred;
int compilation;
char *albumname;
spotify_cfg = cfg_getsec(cfg, "spotify");
artist_override = cfg_getbool(spotify_cfg, "artist_override");
starred_artist_override = cfg_getbool(spotify_cfg, "starred_artist_override");
album_override = cfg_getbool(spotify_cfg, "album_override");
starred_album_override = cfg_getbool(spotify_cfg, "starred_album_override");
album = fptr_sp_track_album(track);
if (!album)
return -1;
artist = fptr_sp_album_artist(album);
if (!artist)
return -1;
albumtype = fptr_sp_album_type(album);
starred = fptr_sp_track_is_starred(g_sess, track);
/*
* Treat album as compilation if one of the following conditions is true:
* - spotfy album type is compilation
* - artist_override in config is set to true and track is not part of the starred playlist
* - starred_artist_override in config is set to true and track is part of the starred playlist
*/
compilation = ((albumtype == SP_ALBUMTYPE_COMPILATION)
|| (starred && starred_artist_override)
|| (!starred && artist_override));
if ((starred && starred_album_override)
|| (!starred && album_override))
albumname = strdup(pltitle);
else
albumname = strdup(fptr_sp_album_name(album));
mfi->title = strdup(fptr_sp_track_name(track));
mfi->album = albumname;
mfi->artist = strdup(fptr_sp_artist_name(artist));
mfi->year = fptr_sp_album_year(album);
mfi->song_length = fptr_sp_track_duration(track);
mfi->track = fptr_sp_track_index(track);
mfi->disc = fptr_sp_track_disc(track);
mfi->compilation = compilation;
mfi->artwork = ARTWORK_SPOTIFY;
mfi->type = strdup("spotify");
mfi->codectype = strdup("wav");
mfi->description = strdup("Spotify audio");
mfi->time_added = time_added;
DPRINTF(E_SPAM, L_SPOTIFY, "Metadata for track:\n"
"Title: %s\n"
"Album: %s\n"
"Artist: %s\n"
"Year: %u\n"
"Track: %u\n"
"Disc: %u\n"
"Compilation: %d\n"
"Starred: %d\n",
mfi->title,
mfi->album,
mfi->artist,
mfi->year,
mfi->track,
mfi->disc,
mfi->compilation,
starred);
return 0;
}
static int
spotify_track_save(int plid, sp_track *track, const char *pltitle, int time_added)
{
struct media_file_info mfi;
sp_link *link;
char url[1024];
int ret;
if (!fptr_sp_track_is_loaded(track))
{
DPRINTF(E_LOG, L_SPOTIFY, "Track appears to no longer have the proper status\n");
return -1;
}
if (fptr_sp_track_get_availability(g_sess, track) != SP_TRACK_AVAILABILITY_AVAILABLE)
{
DPRINTF(E_LOG, L_SPOTIFY, "Track not available for playback: '%s'\n", fptr_sp_track_name(track));
return 0;
}
link = fptr_sp_link_create_from_track(track, 0);
if (!link)
{
DPRINTF(E_LOG, L_SPOTIFY, "Could not create link for track: '%s'\n", fptr_sp_track_name(track));
return -1;
}
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);
/* Add to playlistitems table */
ret = db_pl_add_item_bypath(plid, url);
if (ret < 0)
{
DPRINTF(E_LOG, L_SPOTIFY, "Could not save playlist item: '%s'\n", url);
return -1;
}
memset(&mfi, 0, sizeof(struct media_file_info));
ret = spotify_metadata_get(track, &mfi, pltitle, time_added);
if (ret < 0)
{
DPRINTF(E_LOG, L_SPOTIFY, "Metadata missing (but track should be loaded?): '%s'\n", fptr_sp_track_name(track));
free_mfi(&mfi, 1);
return -1;
}
filescanner_process_media(url, time(NULL), 0, F_SCAN_TYPE_SPOTIFY, &mfi);
free_mfi(&mfi, 1);
return 0;
}
static int
spotify_playlist_save(sp_playlist *pl)
{
struct playlist_info *pli;
sp_track *track;
sp_link *link;
char url[1024];
const char *name;
int plid;
int num_tracks;
char virtual_path[PATH_MAX];
int time;
int ret;
int i;
if (!fptr_sp_playlist_is_loaded(pl))
{
DPRINTF(E_DBG, L_SPOTIFY, "Playlist still not loaded - will wait for next callback\n");
return 0;
}
name = fptr_sp_playlist_name(pl);
num_tracks = fptr_sp_playlist_num_tracks(pl);
// The starred playlist has an empty name, set it manually to "Starred"
if (*name == '\0')
name = "Starred";
for (i = 0; i < num_tracks; i++)
{
track = fptr_sp_playlist_track(pl, i);
if (track && !fptr_sp_track_is_loaded(track))
{
DPRINTF(E_DBG, L_SPOTIFY, "All playlist tracks not loaded (will wait for next callback): %s\n", name);
return 0;
}
}
DPRINTF(E_LOG, L_SPOTIFY, "Saving playlist (%d tracks): '%s'\n", num_tracks, name);
/* Save playlist (playlists table) */
link = fptr_sp_link_create_from_playlist(pl);
if (!link)
{
DPRINTF(E_LOG, L_SPOTIFY, "Could not create link for playlist (wait): '%s'\n", name);
return -1;
}
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);
pli = db_pl_fetch_bypath(url);
snprintf(virtual_path, PATH_MAX, "/spotify:/%s", name);
if (pli)
{
DPRINTF(E_DBG, L_SPOTIFY, "Playlist found ('%s', link %s), updating\n", name, url);
plid = pli->id;
free(pli->title);
pli->title = strdup(name);
free(pli->virtual_path);
pli->virtual_path = strdup(virtual_path);
ret = db_pl_update(pli);
if (ret < 0)
{
DPRINTF(E_LOG, L_SPOTIFY, "Error updating playlist ('%s', link %s)\n", name, url);
free_pli(pli, 0);
return -1;
}
db_pl_clear_items(plid);
}
else
{
DPRINTF(E_DBG, L_SPOTIFY, "Adding playlist ('%s', link %s)\n", name, url);
pli = (struct playlist_info *)malloc(sizeof(struct playlist_info));
if (!pli)
{
DPRINTF(E_LOG, L_SCAN, "Out of memory\n");
return -1;
}
memset(pli, 0, sizeof(struct playlist_info));
pli->type = PL_PLAIN;
pli->title = strdup(name);
pli->path = strdup(url);
pli->virtual_path = strdup(virtual_path);
pli->parent_id = g_base_plid;
ret = db_pl_add(pli, &plid);
if ((ret < 0) || (plid < 1))
{
DPRINTF(E_LOG, L_SPOTIFY, "Error adding playlist ('%s', link %s, ret %d, plid %d)\n", name, url, ret, plid);
free_pli(pli, 0);
return -1;
}
}
free_pli(pli, 0);
/* Save tracks and playlistitems (files and playlistitems table) */
db_transaction_begin();
for (i = 0; i < num_tracks; i++)
{
track = fptr_sp_playlist_track(pl, i);
if (!track)
{
DPRINTF(E_LOG, L_SPOTIFY, "Track %d in playlist '%s' (id %d) is invalid\n", i, name, plid);
continue;
}
time = fptr_sp_playlist_track_create_time(pl, i);
ret = spotify_track_save(plid, track, name, time);
if (ret < 0)
{
DPRINTF(E_LOG, L_SPOTIFY, "Error saving track %d to playlist '%s' (id %d)\n", i, name, plid);
continue;
}
}
db_transaction_end();
return plid;
}
/* -------------------------- 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));
spotify_playlist_save(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));
spotify_playlist_save(pl);
}
/**
* 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);
spotify_playlist_save(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)
{
struct playlist_info *pli;
sp_link *link;
char url[1024];
int plid;
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);
pli = db_pl_fetch_bypath(url);
if (!pli)
{
DPRINTF(E_DBG, L_SPOTIFY, "Playlist %s not found, can't delete\n", url);
return;
}
plid = pli->id;
free_pli(pli, 0);
db_spotify_pl_delete(plid);
}
/**
* 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 void
audio_fifo_flush(void)
{
audio_fifo_data_t *afd;
DPRINTF(E_DBG, L_SPOTIFY, "Flushing audio fifo\n");
pthread_mutex_lock(&g_audio_fifo->mutex);
while((afd = TAILQ_FIRST(&g_audio_fifo->q))) {
TAILQ_REMOVE(&g_audio_fifo->q, afd, link);
free(afd);
}
g_audio_fifo->qlen = 0;
g_audio_fifo->fullcount = 0;
pthread_mutex_unlock(&g_audio_fifo->mutex);
}
static int
playback_setup(struct spotify_command *cmd)
{
sp_track *track;
sp_error err;
DPRINTF(E_DBG, L_SPOTIFY, "Setting up for playback\n");
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");
return -1;
}
if (!cmd->arg.link)
{
DPRINTF(E_LOG, L_SPOTIFY, "Playback setup failed, no Spotify link\n");
return -1;
}
track = fptr_sp_link_as_track(cmd->arg.link);
if (!track)
{
DPRINTF(E_LOG, L_SPOTIFY, "Playback setup failed, invalid Spotify track\n");
return -1;
}
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));
return -1;
}
audio_fifo_flush();
return 0;
}
static int
playback_play(struct spotify_command *cmd)
{
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));
return -1;
}
g_state = SPOTIFY_STATE_PLAYING;
return 0;
}
static int
playback_pause(struct spotify_command *cmd)
{
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));
return -1;
}
g_state = SPOTIFY_STATE_PAUSED;
return 0;
}
static int
playback_stop(struct spotify_command *cmd)
{
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));
return -1;
}
g_state = SPOTIFY_STATE_STOPPED;
return 0;
}
static int
playback_seek(struct spotify_command *cmd)
{
sp_error err;
DPRINTF(E_DBG, L_SPOTIFY, "Playback seek\n");
err = fptr_sp_session_player_seek(g_sess, cmd->arg.seek_ms);
if (SP_ERROR_OK != err)
{
DPRINTF(E_LOG, L_SPOTIFY, "Could not seek: %s\n", fptr_sp_error_message(err));
return -1;
}
audio_fifo_flush();
return 0;
}
static int
playback_eot(struct spotify_command *cmd)
{
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));
return -1;
}
g_state = SPOTIFY_STATE_STOPPING;
return 0;
}
static int
audio_get(struct spotify_command *cmd)
{
struct timespec ts;
audio_fifo_data_t *afd;
int processed;
int timeout;
int ret;
int s;
afd = NULL;
processed = 0;
// If spotify was paused begin by resuming playback
if (g_state == SPOTIFY_STATE_PAUSED)
playback_play(NULL);
pthread_mutex_lock(&g_audio_fifo->mutex);
while ((processed < cmd->arg.audio.wanted) && (g_state != SPOTIFY_STATE_STOPPED))
{
// If track has ended and buffer is empty
if ((g_state == SPOTIFY_STATE_STOPPING) && (g_audio_fifo->qlen <= 0))
{
DPRINTF(E_DBG, L_SPOTIFY, "Track finished\n");
g_state = SPOTIFY_STATE_STOPPED;
break;
}
// If buffer is empty, wait for audio, but use timed wait so we don't
// risk waiting forever (maybe the player stopped while we were waiting)
timeout = 0;
while ( !(afd = TAILQ_FIRST(&g_audio_fifo->q)) &&
(g_state != SPOTIFY_STATE_STOPPED) &&
(g_state != SPOTIFY_STATE_STOPPING) &&
(timeout < SPOTIFY_TIMEOUT) )
{
DPRINTF(E_DBG, L_SPOTIFY, "Waiting for audio\n");
#if _POSIX_TIMERS > 0
clock_gettime(CLOCK_REALTIME, &ts);
#else
struct timeval tv;
gettimeofday(&tv, NULL);
TIMEVAL_TO_TIMESPEC(&tv, &ts);
#endif
ts.tv_sec += 5;
timeout += 5;
pthread_cond_timedwait(&g_audio_fifo->cond, &g_audio_fifo->mutex, &ts);
}
if ((!afd) && (timeout >= SPOTIFY_TIMEOUT))
{
DPRINTF(E_LOG, L_SPOTIFY, "Timeout waiting for audio (waited %d sec)\n", timeout);
spotify_playback_stop_nonblock();
}
if (!afd)
break;
TAILQ_REMOVE(&g_audio_fifo->q, afd, link);
g_audio_fifo->qlen -= afd->nsamples;
s = afd->nsamples * sizeof(int16_t) * 2;
ret = evbuffer_add(cmd->arg.audio.evbuf, afd->samples, s);
free(afd);
afd = NULL;
if (ret < 0)
{
DPRINTF(E_LOG, L_SPOTIFY, "Out of memory for evbuffer (tried to add %d bytes)\n", s);
pthread_mutex_unlock(&g_audio_fifo->mutex);
return -1;
}
processed += s;
}
pthread_mutex_unlock(&g_audio_fifo->mutex);
return processed;
}
static int
artwork_get(struct spotify_command *cmd)
{
char *path;
sp_link *link;
sp_track *track;
sp_album *album;
const byte *image_id;
sp_image *image;
sp_image_size image_size;
sp_imageformat imageformat;
sp_error err;
const void *data;
size_t data_size;
int ret;
path = cmd->arg.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 ((cmd->arg.artwork.max_w > 64) || (cmd->arg.artwork.max_h > 64))
image_size = SP_IMAGE_SIZE_NORMAL; // 300x300
if ((cmd->arg.artwork.max_w > 300) || (cmd->arg.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;
}
// We want to be fast, so no waiting for the image to load
if (!fptr_sp_image_is_loaded(image))
goto level3_exit;
err = fptr_sp_image_error(image);
if (err != SP_ERROR_OK)
{
DPRINTF(E_WARN, L_SPOTIFY, "Getting artwork failed, Spotify error: %s\n", fptr_sp_error_message(err));
goto level3_exit;
}
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 level3_exit;
}
data = fptr_sp_image_data(image, &data_size);
if (!data || (data_size == 0))
{
DPRINTF(E_LOG, L_SPOTIFY, "Getting artwork failed, no image data from Spotify: %s\n", path);
goto level3_exit;
}
ret = evbuffer_expand(cmd->arg.artwork.evbuf, data_size);
if (ret < 0)
{
DPRINTF(E_LOG, L_SPOTIFY, "Out of memory for artwork\n");
goto level3_exit;
}
ret = evbuffer_add(cmd->arg.artwork.evbuf, data, data_size);
if (ret < 0)
{
DPRINTF(E_LOG, L_SPOTIFY, "Could not add Spotify image to event buffer\n");
goto level3_exit;
}
DPRINTF(E_DBG, L_SPOTIFY, "Spotify artwork loaded ok\n");
fptr_sp_image_release(image);
return data_size;
level3_exit:
fptr_sp_image_release(image);
level2_exit:
fptr_sp_link_release(link);
level1_exit:
return -1;
}
/* --------------------------- 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)
{
cfg_t *spotify_cfg;
sp_playlist *pl;
sp_playlistcontainer *pc;
struct playlist_info pli;
int ret;
int i;
if (SP_ERROR_OK != error)
{
DPRINTF(E_LOG, L_SPOTIFY, "Login failed: %s\n", fptr_sp_error_message(error));
return;
}
DPRINTF(E_LOG, L_SPOTIFY, "Login to Spotify succeeded. Reloading playlists.\n");
db_spotify_purge();
pl = fptr_sp_session_starred_create(sess);
fptr_sp_playlist_add_callbacks(pl, &pl_callbacks, NULL);
spotify_cfg = cfg_getsec(cfg, "spotify");
if (! cfg_getbool(spotify_cfg, "base_playlist_disable"))
{
memset(&pli, 0, sizeof(struct playlist_info));
pli.title = "Spotify";
pli.type = PL_FOLDER;
pli.path = "spotify:playlistfolder";
ret = db_pl_add(&pli, &g_base_plid);
if (ret < 0)
{
DPRINTF(E_LOG, L_SPOTIFY, "Error adding base playlist\n");
return;
}
}
else
g_base_plid = 0;
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);
}
}
/**
* 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");
pthread_mutex_lock(&login_lck);
pthread_cond_signal(&login_cond);
pthread_mutex_unlock(&login_lck);
}
/**
* 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)
{
audio_fifo_data_t *afd;
size_t s;
/* No support for resampling right now */
if ((format->sample_rate != 44100) || (format->channels != 2))
{
DPRINTF(E_LOG, L_SPOTIFY, "Got music with unsupported samplerate or channels, stopping playback\n");
spotify_playback_stop_nonblock();
return num_frames;
}
if (num_frames == 0)
return 0; // Audio discontinuity, do nothing
pthread_mutex_lock(&g_audio_fifo->mutex);
/* Buffer three seconds of audio */
if (g_audio_fifo->qlen > (3 * format->sample_rate))
{
// If the buffer has been full the last 300 times (~about a minute) we
// assume the player thread paused/died without telling us, so we signal pause
if (g_audio_fifo->fullcount < 300)
g_audio_fifo->fullcount++;
else
{
DPRINTF(E_WARN, L_SPOTIFY, "Buffer full more than 300 times, pausing\n");
spotify_playback_pause_nonblock();
g_audio_fifo->fullcount = 0;
}
pthread_mutex_unlock(&g_audio_fifo->mutex);
return 0;
}
else
g_audio_fifo->fullcount = 0;
s = num_frames * sizeof(int16_t) * format->channels;
afd = malloc(sizeof(*afd) + s);
memcpy(afd->samples, frames, s);
afd->nsamples = num_frames;
TAILQ_INSERT_TAIL(&g_audio_fifo->q, afd, link);
g_audio_fifo->qlen += num_frames;
pthread_cond_signal(&g_audio_fifo->cond);
pthread_mutex_unlock(&g_audio_fifo->mutex);
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");
spotify_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\n");
}
else if (g_state == SPOTIFY_STATE_PLAYING)
{
DPRINTF(E_LOG, L_SPOTIFY, "Music interrupted - connection error or logged out\n");
spotify_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)
{
struct spotify_command *cmd;
DPRINTF(E_DBG, L_SPOTIFY, "End of track\n");
cmd = (struct spotify_command *)malloc(sizeof(struct spotify_command));
if (!cmd)
{
DPRINTF(E_LOG, L_SPOTIFY, "Could not allocate spotify_command\n");
return;
}
memset(cmd, 0, sizeof(struct spotify_command));
cmd->nonblock = 1;
cmd->func = playback_eot;
cmd->arg.noarg = NULL;
nonblock_command(cmd);
}
/**
* 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(int fd, short what, void *arg)
{
int dummy;
int ret;
ret = read(g_exit_pipe[0], &dummy, sizeof(dummy));
if (ret != sizeof(dummy))
DPRINTF(E_LOG, L_SPOTIFY, "Error reading from exit pipe\n");
fptr_sp_session_player_unload(g_sess);
fptr_sp_session_logout(g_sess);
event_base_loopbreak(evbase_spotify);
g_state = SPOTIFY_STATE_INACTIVE;
event_add(g_exitev, NULL);
}
static void
command_cb(int fd, short what, void *arg)
{
struct spotify_command *cmd;
int ret;
ret = read(g_cmd_pipe[0], &cmd, sizeof(cmd));
if (ret != sizeof(cmd))
{
DPRINTF(E_LOG, L_SPOTIFY, "Could not read command! (read %d): %s\n", ret, (ret < 0) ? strerror(errno) : "-no error-");
goto readd;
}
if (cmd->nonblock)
{
cmd->func(cmd);
free(cmd);
goto readd;
}
pthread_mutex_lock(&cmd->lck);
g_cmd = cmd;
ret = cmd->func(cmd);
cmd->ret = ret;
g_cmd = NULL;
pthread_cond_signal(&cmd->cond);
pthread_mutex_unlock(&cmd->lck);
readd:
event_add(g_cmdev, NULL);
}
/* 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
spotify_playback_setup(struct media_file_info *mfi)
{
struct spotify_command cmd;
sp_link *link;
int ret;
DPRINTF(E_DBG, L_SPOTIFY, "Playback setup request\n");
link = fptr_sp_link_create_from_string(mfi->path);
if (!link)
{
DPRINTF(E_LOG, L_SPOTIFY, "Playback setup failed, invalid Spotify link: %s\n", mfi->path);
return -1;
}
command_init(&cmd);
cmd.func = playback_setup;
cmd.arg.link = link;
ret = sync_command(&cmd);
command_deinit(&cmd);
return ret;
}
int
spotify_playback_play()
{
struct spotify_command cmd;
int ret;
DPRINTF(E_DBG, L_SPOTIFY, "Playback request\n");
command_init(&cmd);
cmd.func = playback_play;
cmd.arg.noarg = NULL;
ret = sync_command(&cmd);
command_deinit(&cmd);
return ret;
}
int
spotify_playback_pause()
{
struct spotify_command cmd;
int ret;
DPRINTF(E_DBG, L_SPOTIFY, "Pause request\n");
command_init(&cmd);
cmd.func = playback_pause;
cmd.arg.noarg = NULL;
ret = sync_command(&cmd);
command_deinit(&cmd);
return ret;
}
/* Thread: libspotify */
void
spotify_playback_pause_nonblock(void)
{
struct spotify_command *cmd;
DPRINTF(E_DBG, L_SPOTIFY, "Nonblock pause request\n");
cmd = (struct spotify_command *)malloc(sizeof(struct spotify_command));
if (!cmd)
{
DPRINTF(E_LOG, L_SPOTIFY, "Could not allocate spotify_command\n");
return;
}
memset(cmd, 0, sizeof(struct spotify_command));
cmd->nonblock = 1;
cmd->func = playback_pause;
cmd->arg.noarg = NULL;
nonblock_command(cmd);
}
/* Thread: player and libspotify */
int
spotify_playback_stop(void)
{
struct spotify_command cmd;
int ret;
DPRINTF(E_DBG, L_SPOTIFY, "Stop request\n");
command_init(&cmd);
cmd.func = playback_stop;
cmd.arg.noarg = NULL;
ret = sync_command(&cmd);
command_deinit(&cmd);
return ret;
}
/* Thread: player and libspotify */
void
spotify_playback_stop_nonblock(void)
{
struct spotify_command *cmd;
DPRINTF(E_DBG, L_SPOTIFY, "Nonblock stop request\n");
cmd = (struct spotify_command *)malloc(sizeof(struct spotify_command));
if (!cmd)
{
DPRINTF(E_LOG, L_SPOTIFY, "Could not allocate spotify_command\n");
return;
}
memset(cmd, 0, sizeof(struct spotify_command));
cmd->nonblock = 1;
cmd->func = playback_stop;
cmd->arg.noarg = NULL;
nonblock_command(cmd);
}
/* Thread: player */
int
spotify_playback_seek(int ms)
{
struct spotify_command cmd;
int ret;
command_init(&cmd);
cmd.func = playback_seek;
cmd.arg.seek_ms = ms;
ret = sync_command(&cmd);
command_deinit(&cmd);
if (ret == 0)
return ms;
else
return -1;
}
/* Thread: player */
int
spotify_audio_get(struct evbuffer *evbuf, int wanted)
{
struct spotify_command cmd;
int ret;
command_init(&cmd);
cmd.func = audio_get;
cmd.arg.audio.evbuf = evbuf;
cmd.arg.audio.wanted = wanted;
ret = sync_command(&cmd);
command_deinit(&cmd);
return ret;
}
/* Thread: httpd (artwork) */
int
spotify_artwork_get(struct evbuffer *evbuf, char *path, int max_w, int max_h)
{
struct spotify_command cmd;
int ret;
command_init(&cmd);
cmd.func = artwork_get;
cmd.arg.artwork.evbuf = evbuf;
cmd.arg.artwork.path = path;
cmd.arg.artwork.max_w = max_w;
cmd.arg.artwork.max_h = max_h;
ret = sync_command(&cmd);
command_deinit(&cmd);
return ret;
}
static int
spotify_file_read(char *path, char **username, char **password)
{
FILE *fp;
char *u;
char *p;
char buf[256];
int len;
fp = fopen(path, "rb");
if (!fp)
{
DPRINTF(E_LOG, L_SPOTIFY, "Could not open Spotify credentials file %s: %s\n", path, strerror(errno));
return -1;
}
u = fgets(buf, sizeof(buf), fp);
if (!u)
{
DPRINTF(E_LOG, L_SPOTIFY, "Empty Spotify credentials file %s\n", path);
fclose(fp);
return -1;
}
len = strlen(u);
if (buf[len - 1] != '\n')
{
DPRINTF(E_LOG, L_SPOTIFY, "Invalid Spotify credentials file %s: username name too long or missing password\n", path);
fclose(fp);
return -1;
}
while (len)
{
if ((buf[len - 1] == '\r') || (buf[len - 1] == '\n'))
{
buf[len - 1] = '\0';
len--;
}
else
break;
}
if (!len)
{
DPRINTF(E_LOG, L_SPOTIFY, "Invalid Spotify credentials file %s: empty line where username expected\n", path);
fclose(fp);
return -1;
}
u = strdup(buf);
if (!u)
{
DPRINTF(E_LOG, L_SPOTIFY, "Out of memory for username while reading %s\n", path);
fclose(fp);
return -1;
}
p = fgets(buf, sizeof(buf), fp);
fclose(fp);
if (!p)
{
DPRINTF(E_LOG, L_SPOTIFY, "Invalid Spotify credentials file %s: no password\n", path);
free(u);
return -1;
}
len = strlen(p);
while (len)
{
if ((buf[len - 1] == '\r') || (buf[len - 1] == '\n'))
{
buf[len - 1] = '\0';
len--;
}
else
break;
}
p = strdup(buf);
if (!p)
{
DPRINTF(E_LOG, L_SPOTIFY, "Out of memory for password while reading %s\n", path);
free(u);
return -1;
}
DPRINTF(E_LOG, L_SPOTIFY, "Spotify credentials file OK, logging in with username %s\n", u);
*username = u;
*password = p;
return 0;
}
/* Thread: filescanner */
void
spotify_login(char *path)
{
sp_error err;
char *username;
char *password;
int ret;
if (!g_sess)
{
if (!g_libhandle)
DPRINTF(E_LOG, L_SPOTIFY, "Can't login! - could not find libspotify\n");
else
DPRINTF(E_LOG, L_SPOTIFY, "Can't login! - no valid Spotify session\n");
return;
}
if (SP_CONNECTION_STATE_LOGGED_IN == fptr_sp_session_connectionstate(g_sess))
{
pthread_mutex_lock(&login_lck);
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));
pthread_mutex_unlock(&login_lck);
return;
}
pthread_cond_wait(&login_cond, &login_lck);
pthread_mutex_unlock(&login_lck);
}
DPRINTF(E_INFO, L_SPOTIFY, "Logging into Spotify\n");
if (path)
{
ret = spotify_file_read(path, &username, &password);
if (ret < 0)
return;
err = fptr_sp_session_login(g_sess, username, password, 1, NULL);
free(username);
free(password);
}
else
{
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));
return;
}
}
/* Thread: main */
int
spotify_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;
ret = pipe2(g_exit_pipe, O_CLOEXEC);
if (ret < 0)
{
DPRINTF(E_LOG, L_SPOTIFY, "Could not create pipe: %s\n", strerror(errno));
goto exit_fail;
}
ret = pipe2(g_cmd_pipe, O_CLOEXEC);
if (ret < 0)
{
DPRINTF(E_LOG, L_SPOTIFY, "Could not create command pipe: %s\n", strerror(errno));
goto cmd_fail;
}
ret = pipe2(g_notify_pipe, O_CLOEXEC);
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_exitev = event_new(evbase_spotify, g_exit_pipe[0], EV_READ, exit_cb, NULL);
if (!g_exitev)
{
DPRINTF(E_LOG, L_SPOTIFY, "Could not create exit event\n");
goto evnew_fail;
}
g_cmdev = event_new(evbase_spotify, g_cmd_pipe[0], EV_READ, command_cb, NULL);
if (!g_cmdev)
{
DPRINTF(E_LOG, L_SPOTIFY, "Could not create cmd event\n");
goto evnew_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_exitev, NULL);
event_add(g_cmdev, NULL);
event_add(g_notifyev, NULL);
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;
}
/* Prepare audio buffer */
g_audio_fifo = (audio_fifo_t *)malloc(sizeof(audio_fifo_t));
if (!g_audio_fifo)
{
DPRINTF(E_LOG, L_SPOTIFY, "Out of memory for audio buffer\n");
goto audio_fifo_fail;
}
TAILQ_INIT(&g_audio_fifo->q);
g_audio_fifo->qlen = 0;
pthread_mutex_init(&g_audio_fifo->mutex, NULL);
pthread_cond_init(&g_audio_fifo->cond, NULL);
pthread_mutex_init(&login_lck, NULL);
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;
}
DPRINTF(E_DBG, L_SPOTIFY, "Spotify init complete\n");
return 0;
thread_fail:
pthread_cond_destroy(&login_cond);
pthread_mutex_destroy(&login_lck);
pthread_cond_destroy(&g_audio_fifo->cond);
pthread_mutex_destroy(&g_audio_fifo->mutex);
free(g_audio_fifo);
audio_fifo_fail:
fptr_sp_session_release(g_sess);
g_sess = NULL;
session_fail:
evnew_fail:
event_base_free(evbase_spotify);
evbase_spotify = NULL;
evbase_fail:
close(g_notify_pipe[0]);
close(g_notify_pipe[1]);
notify_fail:
close(g_cmd_pipe[0]);
close(g_cmd_pipe[1]);
cmd_fail:
close(g_exit_pipe[0]);
close(g_exit_pipe[1]);
exit_fail:
assign_fail:
dlclose(g_libhandle);
g_libhandle = NULL;
libspotify_fail:
return -1;
}
void
spotify_deinit(void)
{
int ret;
if (!g_libhandle)
return;
/* Send exit signal to thread (if active) */
if (g_state != SPOTIFY_STATE_INACTIVE)
{
thread_exit();
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 (should free events too) */
event_base_free(evbase_spotify);
/* Close pipes */
close(g_notify_pipe[0]);
close(g_notify_pipe[1]);
close(g_cmd_pipe[0]);
close(g_cmd_pipe[1]);
close(g_exit_pipe[0]);
close(g_exit_pipe[1]);
/* Destroy locks */
pthread_cond_destroy(&login_cond);
pthread_mutex_destroy(&login_lck);
/* Clear audio fifo */
pthread_cond_destroy(&g_audio_fifo->cond);
pthread_mutex_destroy(&g_audio_fifo->mutex);
free(g_audio_fifo);
/* Release libspotify handle */
dlclose(g_libhandle);
}
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