owntone-server/src/player.c

3885 lines
100 KiB
C

/*
* Copyright (C) 2016-2019 Espen Jürgensen <espenjurgensen@gmail.com>
* Copyright (C) 2010-2011 Julien BLACHE <jb@jblache.org>
*
* 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
* About player.c
* --------------
* The main tasks of the player are the following:
* - handle playback commands, status checks and events from other threads
* - receive audio from the input thread and to own the playback buffer
* - feed the outputs at the appropriate rate (controlled by the playback timer)
* - output device handling (outsourced to outputs.c)
* - notify about playback status changes
* - maintain the playback queue
*
* The player thread should never be making operations that may block, since
* that could block callers requesting status (effectively making the server
* unresponsive) and it could also starve the outputs. In practice this rule is
* not always obeyed, for instance some outputs do their setup in ways that
* could block.
*
* Listener events
* ---------------
* Events will be signaled via listener_notify(). The following rules apply to
* how this must be done in the code:
* - always use status_update() to make sure the callbacks that the listener
* makes do not block the player thread, and to avoid any risk of deadlocks
* - if the event is a result of an external command then trigger it when the
* command is completed, so generally in a bottom half
*
*/
#ifdef HAVE_CONFIG_H
# include <config.h>
#endif
#include <stdio.h>
#include <stdbool.h>
#include <stdlib.h>
#include <unistd.h>
#include <fcntl.h>
#include <string.h>
#include <inttypes.h>
#include <stdint.h>
#include <errno.h>
#include <time.h>
#include <pthread.h>
#ifdef HAVE_TIMERFD
# include <sys/timerfd.h>
#else
# include <signal.h>
#endif
#include <event2/event.h>
#include <event2/buffer.h>
#include <gcrypt.h>
#include "db.h"
#include "logger.h"
#include "conffile.h"
#include "settings.h"
#include "misc.h"
#include "player.h"
#include "worker.h"
#include "listener.h"
#include "commands.h"
// Audio and metadata outputs
#include "outputs.h"
// Audio and metadata input
#include "input.h"
// Scrobbling
#ifdef LASTFM
# include "lastfm.h"
#endif
// The interval between each tick of the playback clock in ms. This means that
// we read 10 ms frames from the input and pass to the output, so the clock
// ticks 100 times a second. We use this value because most common sample rates
// are divisible by 100, and because it keeps delay low.
// TODO sample rates of 22050 might cause underruns, since we would be reading
// only 100 x 220 = 22000 samples each second.
#define PLAYER_TICK_INTERVAL 10
// For every tick_interval, we will read a frame from the input buffer and
// write it to the outputs. If the input is empty, we will try to catch up next
// tick. However, at some point we will owe the outputs so much data that we
// have to suspend playback and wait for the input to get its act together.
// (value is in milliseconds and should be low enough to avoid output underrun)
#define PLAYER_READ_BEHIND_MAX 1500
// Generally, an output must not block (for long) when outputs_write() is
// called. If an output does that anyway, the next tick event will be late, and
// by extension playback_cb(). We will try to catch up, but if the delay
// gets above this value, we will suspend playback and reset the output.
// (value is in milliseconds)
#define PLAYER_WRITE_BEHIND_MAX 1500
// If a speaker fails during playback we try to bring it back by reconnecting
// after this number of seconds. When this feature was added, we had an issue
// with Homepods and ATV4's dropping connections, so it is also a workaround.
#define PLAYER_SPEAKER_RESURRECT_TIME 5
// Shorthand condition for outputs_start and outputs_device_start, both need to
// know if they should only probe the device, or fully start it.
#define PLAYER_ONLY_PROBE (player_state != PLAY_PLAYING)
// Name of settings used by player
#define PLAYER_SETTINGS_MODE_REPEAT "player_mode_repeat"
#define PLAYER_SETTINGS_MODE_SHUFFLE "player_mode_shuffle"
#define PLAYER_SETTINGS_MODE_CONSUME "player_mode_consume"
//#define DEBUG_PLAYER 1
struct spk_enum
{
spk_enum_cb cb;
void *arg;
};
struct speaker_set_param
{
uint64_t *device_ids;
};
struct speaker_attr_param
{
uint64_t spk_id;
int volume;
const char *volstr;
bool prevent_playback;
bool busy;
struct media_quality quality;
enum player_format format;
int audio_fd;
int metadata_fd;
const char *pin;
};
struct speaker_get_param
{
uint64_t spk_id;
uint32_t active_remote;
struct player_speaker_info *spk_info;
};
struct speaker_auth_param
{
enum output_types type;
char pin[5];
};
struct player_seek_param
{
int ms;
enum player_seek_mode mode;
};
union player_arg
{
struct output_device *device;
struct speaker_auth_param auth;
uint32_t id;
int intval;
};
struct player_source
{
// Id of the file/item in the files database
uint32_t id;
// Item-Id of the file/item in the queue
uint32_t item_id;
// Length of the file/item in milliseconds, 0 for endless (unless the input
// has given us a track length)
uint32_t len_ms;
// Set when opening the item based on initial track length (so is not changed
// by later input track length metadata)
bool is_seekable;
// Quality of the source (sample rate etc.)
struct media_quality quality;
enum data_kind data_kind;
enum media_kind media_kind;
char *path;
// This is the position (measured in samples) the session was at when we
// started reading from the input source.
uint64_t read_start;
// This is the position (measured in samples) the session was at when we got
// a EOF or error from the input.
uint64_t read_end;
// Same as the above, but added with samples equivalent to
// OUTPUTS_BUFFER_DURATION. So when the session position reaches play_start it
// means the media should actually be playing on your device.
uint64_t play_start;
uint64_t play_end;
// When we receive a metadata update from the input it shouldn't be pushed to
// clients until the speakers have reached the position that matches the
// position the player was reading at when it got INPUT_FLAG_METADATA.
uint64_t metadata_update;
// The number of milliseconds into the media that we started
uint32_t seek_ms;
// This should at any time match the millisecond position of the media that is
// coming out of your device. Will be 0 during initial buffering.
uint32_t pos_ms;
// How many samples the outputs buffer before playing (=delay)
int output_buffer_samples;
// Linked list, where next is the next item to play
struct player_source *prev;
struct player_source *next;
};
struct player_session
{
uint8_t *buffer;
size_t bufsize;
// The time the playback session started
struct timespec start_ts;
// The time the first sample in the buffer should be played by the output,
// without taking output buffer time (OUTPUTS_BUFFER_DURATION) into account.
// It will be equal to:
// pts = start_ts + ticks_elapsed * player_tick_interval
struct timespec pts;
// Equals current number of samples written to outputs
uint32_t pos;
// The player sources also have a quality property, but in some situations
// they may get cleared. So we also save it here.
struct media_quality quality;
// We try to read a fixed number of bytes from the source each clock tick,
// but if it gives us less we increase this correspondingly
size_t read_deficit;
size_t read_deficit_max;
// We send metadata when we start a session, everytime we end a track and if
// the input gives us a new metadata event. This value tracks if we have sent
// the starting metadata.
bool metadata_sent;
// Pointer to the head of the two-way linked list of items from the queue that
// we are either playing or going to play. When an item has been played it is
// removed from the list. The playing_now and reading_now pointers will point
// to items inside this list (or to NULL).
struct player_source *source_list;
// The item from the queue being played right now. It should only be NULL when
// there is no playback.
struct player_source *playing_now;
// The item from the queue which the player is currently doing input_read()
// for. So "reading" means reading from the input buffer - the source itself
// may already be closed by the input module.
struct player_source *reading_now;
};
static struct player_session pb_session;
struct event_base *evbase_player;
static int player_exit;
static pthread_t tid_player;
static struct commands_base *cmdbase;
// Keep track of how many outputs need to call back when flushing internally
// from the player thread (where we can't use player_playback_pause)
static int player_flush_pending;
// Config values and player settings category
static int speaker_autoselect;
static int clear_queue_on_stop_disabled;
static struct settings_category *player_settings_category;
// Player status
static enum play_status player_state;
static enum repeat_mode repeat;
static char shuffle;
static char consume;
// Playback timer
#ifdef HAVE_TIMERFD
static int pb_timer_fd;
#else
timer_t pb_timer;
#endif
static struct event *pb_timer_ev;
// Time between ticks, i.e. time between when playback_cb() is invoked
static struct timespec player_tick_interval;
// Timer resolution
static struct timespec player_timer_res;
// PLAYER_WRITE_BEHIND_MAX converted to clock ticks
static int pb_write_deficit_max;
// True if we are trying to recover from a major playback timer overrun (write problems)
static bool pb_write_recovery;
// Audio source
static uint32_t cur_plid;
static uint32_t cur_plversion;
// Play history
static struct player_history *history;
// When we receive track metadata from the input we have to wait until playback
// has reached the position before using it. We use this to record the update.
struct metadata_pending_register
{
uint64_t pos;
struct input_metadata *metadata;
} metadata_pending[16];
/* -------------------------------- Forwards -------------------------------- */
static void
pb_abort(void);
static int
pb_suspend(void);
/* ----------------------- Misc helpers and callbacks ----------------------- */
// Callback from the worker thread (async operation as it may block)
static void
playcount_inc_cb(void *arg)
{
int *id = arg;
db_file_inc_playcount(*id);
}
static void
skipcount_inc_cb(void *arg)
{
int *id = arg;
db_file_inc_skipcount(*id);
}
#ifdef LASTFM
// Callback from the worker thread (async operation as it may block)
static void
scrobble_cb(void *arg)
{
int *id = arg;
lastfm_scrobble(*id);
}
#endif
// This is just to be able to log the caller in a simple way
#define status_update(x, y) status_update_impl((x), (y), __func__)
static void
status_update_impl(enum play_status status, short listener_events, const char *caller)
{
DPRINTF(E_DBG, L_PLAYER, "Status update - status: %d, events: %d, caller: %s\n", status, listener_events, caller);
player_state = status;
listener_notify(listener_events);
}
/*
* Add the song with the given id to the list of previously played songs
*/
static void
history_add(uint32_t id, uint32_t item_id)
{
unsigned int cur_index;
unsigned int next_index;
// Check if the current song is already the last in the history to avoid duplicates
cur_index = (history->start_index + history->count - 1) % MAX_HISTORY_COUNT;
if (id == history->id[cur_index])
{
DPRINTF(E_DBG, L_PLAYER, "Current playing/streaming song already in history\n");
return;
}
// Calculate the next index and update the start-index and count for the id-buffer
next_index = (history->start_index + history->count) % MAX_HISTORY_COUNT;
if (next_index == history->start_index && history->count > 0)
history->start_index = (history->start_index + 1) % MAX_HISTORY_COUNT;
history->id[next_index] = id;
history->item_id[next_index] = item_id;
if (history->count < MAX_HISTORY_COUNT)
history->count++;
}
static void
seek_save(void)
{
struct player_source *ps = pb_session.playing_now;
if (ps && (ps->media_kind & (MEDIA_KIND_MOVIE | MEDIA_KIND_PODCAST | MEDIA_KIND_AUDIOBOOK | MEDIA_KIND_TVSHOW)))
db_file_seek_update(ps->id, ps->pos_ms);
}
/*
* Returns the next queue item based on the current streaming source and repeat mode
*
* If repeat mode is repeat all, shuffle is active and the current streaming source is the
* last item in the queue, the queue is reshuffled prior to returning the first item of the
* queue.
*/
static struct db_queue_item *
queue_item_next(uint32_t item_id)
{
struct db_queue_item *queue_item;
if (repeat == REPEAT_SONG)
{
queue_item = db_queue_fetch_byitemid(item_id);
if (!queue_item)
goto error;
}
else
{
queue_item = db_queue_fetch_next(item_id, shuffle);
if (!queue_item && repeat == REPEAT_ALL)
{
if (shuffle)
db_queue_reshuffle(0);
queue_item = db_queue_fetch_bypos(0, shuffle);
if (!queue_item)
goto error;
}
}
if (!queue_item)
{
DPRINTF(E_DBG, L_PLAYER, "Reached end of queue\n");
return NULL;
}
return queue_item;
error:
DPRINTF(E_LOG, L_PLAYER, "Error fetching next item from queue (item-id=%" PRIu32 ", repeat=%d)\n", item_id, repeat);
return NULL;
}
static struct db_queue_item *
queue_item_prev(uint32_t item_id)
{
return db_queue_fetch_prev(item_id, shuffle);
}
/* ------ All this is for dealing with metadata received from the input ----- */
static int
metadata_pending_add(struct input_metadata *metadata, uint64_t pos)
{
int i;
if (pos == 0)
return -1; // Invalid position
for (i = 0; i < ARRAY_SIZE(metadata_pending); i++)
{
if (metadata_pending[i].metadata == NULL)
break;
}
if (i == ARRAY_SIZE(metadata_pending))
{
DPRINTF(E_LOG, L_PLAYER, "Error, too many pending metadata updates\n");
return -1;
}
metadata_pending[i].pos = pos;
metadata_pending[i].metadata = metadata;
return 0;
}
static uint64_t
metadata_pending_next_pos(void)
{
uint64_t next_pos;
int i;
for (i = 0, next_pos = 0; i < ARRAY_SIZE(metadata_pending); i++)
{
if (metadata_pending[i].metadata && (metadata_pending[i].pos < next_pos || !next_pos))
next_pos = metadata_pending[i].pos;
}
return next_pos;
}
static int
metadata_finalize_cb(struct output_metadata *metadata)
{
if (!pb_session.playing_now)
{
DPRINTF(E_WARN, L_PLAYER, "Aborting metadata_send(), playback stopped during metadata preparation\n");
return -1;
}
else if (metadata->item_id != pb_session.playing_now->item_id)
{
DPRINTF(E_WARN, L_PLAYER, "Aborting metadata_send(), item_id changed during metadata preparation (%" PRIu32 " -> %" PRIu32 ")\n",
metadata->item_id, pb_session.playing_now->item_id);
return -1;
}
if (!metadata->pos_ms)
metadata->pos_ms = pb_session.playing_now->pos_ms;
if (!metadata->len_ms)
metadata->len_ms = pb_session.playing_now->len_ms;
if (!metadata->pts.tv_sec)
metadata->pts = pb_session.pts;
return 0;
}
static enum command_state
metadata_finalize(void *arg, int *retval)
{
if (!pb_session.playing_now)
return COMMAND_END; // Playback ended while we doing the metadata update
outputs_metadata_send(pb_session.playing_now->item_id, false, metadata_finalize_cb);
status_update(player_state, LISTENER_PLAYER);
return COMMAND_END;
}
// Done in worker thread because we avoid blocking db updates in the player
static void
metadata_update_queue_cb(void *arg)
{
struct input_metadata *metadata = *(struct input_metadata **)arg;
struct db_queue_item *queue_item;
int ret;
queue_item = db_queue_fetch_byitemid(metadata->item_id);
if (!queue_item)
{
DPRINTF(E_LOG, L_PLAYER, "Bug! Could not update queue metadata, the item_id is unknown (%u)\n", metadata->item_id);
input_metadata_free(metadata, 0);
return;
}
// Update queue item if metadata changed
if (metadata->artist || metadata->title || metadata->album || metadata->genre || metadata->artwork_url || metadata->len_ms)
{
// Since we won't be using the metadata struct values for anything else
// than this we just swap pointers
if (metadata->artist)
swap_pointers(&queue_item->artist, &metadata->artist);
if (metadata->title)
swap_pointers(&queue_item->title, &metadata->title);
if (metadata->album)
swap_pointers(&queue_item->album, &metadata->album);
if (metadata->genre)
swap_pointers(&queue_item->genre, &metadata->genre);
if (metadata->artwork_url)
swap_pointers(&queue_item->artwork_url, &metadata->artwork_url);
if (metadata->len_ms)
queue_item->song_length = metadata->len_ms;
ret = db_queue_item_update(queue_item);
if (ret < 0)
DPRINTF(E_LOG, L_PLAYER, "Database error while updating queue with new metadata\n");
}
free_queue_item(queue_item, 0);
input_metadata_free(metadata, 0);
// Now return to the player thread and run metadata_finalize
commands_exec_async(cmdbase, metadata_finalize, NULL);
}
/* ----------- Audio source handling (interfaces with input module) --------- */
static void
source_free(struct player_source **ps)
{
if (!(*ps))
return;
free((*ps)->path);
free(*ps);
*ps = NULL;
}
/*
* Creates a new player source for the given queue item
*/
static struct player_source *
source_create(struct db_queue_item *queue_item, uint32_t seek_ms)
{
struct player_source *ps;
CHECK_NULL(L_PLAYER, ps = calloc(1, sizeof(struct player_source)));
ps->id = queue_item->file_id;
ps->item_id = queue_item->id;
ps->data_kind = queue_item->data_kind;
ps->media_kind = queue_item->media_kind;
ps->len_ms = queue_item->song_length;
ps->is_seekable = (queue_item->song_length > 0);
ps->path = strdup(queue_item->path);
ps->seek_ms = seek_ms;
return ps;
}
static struct player_source *
source_next_create(struct player_source *current)
{
struct player_source *ps;
struct db_queue_item *queue_item;
if (!current)
{
DPRINTF(E_LOG, L_PLAYER, "Bug! source_next_create called without a current source\n");
return NULL;
}
queue_item = queue_item_next(current->item_id);
if (!queue_item)
return NULL;
ps = source_create(queue_item, 0);
free_queue_item(queue_item, 0);
return ps;
}
static void
source_stop(void)
{
input_stop();
}
static int
source_start(struct player_source *ps)
{
if (!ps)
return 0;
DPRINTF(E_DBG, L_PLAYER, "Opening track: '%s' (id=%d, seek=%d)\n", ps->path, ps->item_id, ps->seek_ms);
input_flush(NULL);
return input_seek(ps->item_id, (int)ps->seek_ms);
}
static void
source_next(struct player_source *ps)
{
if (!ps)
return;
DPRINTF(E_DBG, L_PLAYER, "Opening next track: '%s' (id=%d)\n", ps->path, ps->item_id);
input_start(ps->item_id);
}
static int
source_restart(struct player_source *ps)
{
DPRINTF(E_DBG, L_PLAYER, "Restarting track: '%s' (id=%d, pos=%d)\n", ps->path, ps->item_id, ps->pos_ms);
// Must be non-blocking, because otherwise we get a deadlock via the input
// thread making a sync call to player_playback_start() -> pb_resume() ->
// source_restart() -> input_resume()
input_resume(ps->item_id, ps->pos_ms);
return 0;
}
/* ------------------------ Playback session upkeep ------------------------- */
// The below update the playback session so it is always in mint condition. That
// is all they do, they should not do anything else. If you are looking for a
// place to add some non session actions, look further down at the events.
#ifdef DEBUG_PLAYER
static int debug_dump_counter = -1;
static int
source_print(char *line, size_t linesize, struct player_source *ps, const char *name)
{
int pos = 0;
if (ps)
{
pos += snprintf(line + pos, linesize - pos, "%s.path=%s; ", name, ps->path);
pos += snprintf(line + pos, linesize - pos, "%s.quality=%d; ", name, ps->quality.sample_rate);
pos += snprintf(line + pos, linesize - pos, "%s.item_id=%u; ", name, ps->item_id);
pos += snprintf(line + pos, linesize - pos, "%s.read_start=%" PRIu64 "; ", name, ps->read_start);
pos += snprintf(line + pos, linesize - pos, "%s.play_start=%" PRIu64 "; ", name, ps->play_start);
pos += snprintf(line + pos, linesize - pos, "%s.read_end=%" PRIu64 "; ", name, ps->read_end);
pos += snprintf(line + pos, linesize - pos, "%s.play_end=%" PRIu64 "; ", name, ps->play_end);
pos += snprintf(line + pos, linesize - pos, "%s.metadata_update=%" PRIu64 "; ", name, ps->metadata_update);
pos += snprintf(line + pos, linesize - pos, "%s.pos_ms=%u; ", name, ps->pos_ms);
pos += snprintf(line + pos, linesize - pos, "%s.seek_ms=%u; ", name, ps->seek_ms);
}
else
pos += snprintf(line + pos, linesize - pos, "%s=(null); ", name);
return pos;
}
static void
session_dump(bool use_counter)
{
struct player_source *ps;
char line[4096];
char label[32];
int n;
int pos = 0;
if (use_counter)
{
debug_dump_counter++;
if (debug_dump_counter % 100 != 0)
return;
}
for (ps = pb_session.source_list, n = 0; ps; ps = ps->prev, n--)
{
pos = snprintf(line, sizeof(line), "pos=%d; ", pb_session.pos);
if (ps == pb_session.playing_now && ps == pb_session.reading_now)
snprintf(label, sizeof(label), "[%d][rp]", n);
else if (ps == pb_session.playing_now)
snprintf(label, sizeof(label), "[%d][p]", n);
else if (ps == pb_session.reading_now)
snprintf(label, sizeof(label), "[%d][r]", n);
else
snprintf(label, sizeof(label), "[%d][n]", n);
pos += source_print(line + pos, sizeof(line) - pos, ps, label);
DPRINTF(E_DBG, L_PLAYER, "%s\n", line);
}
}
#endif
static void
session_update_play_eof(void)
{
struct player_source *ps = pb_session.playing_now;
pb_session.playing_now = pb_session.playing_now->next;
// Remove the item we completed playing from source_list
if (pb_session.playing_now)
pb_session.playing_now->prev = NULL;
else
pb_session.source_list = NULL;
// Free the removed item
source_free(&ps);
}
static void
session_update_play_start(void)
{
// Nothing to update right now
}
static void
session_update_read_next(struct player_source *ps)
{
// Attach to linked source list
ps->prev = pb_session.source_list;
pb_session.source_list->next = ps;
pb_session.source_list = ps;
}
static void
session_update_read_eof(void)
{
pb_session.reading_now->read_end = pb_session.pos;
pb_session.reading_now->play_end = pb_session.pos + pb_session.reading_now->output_buffer_samples;
pb_session.reading_now = pb_session.reading_now->next;
// There is nothing else to play
if (!pb_session.reading_now)
return;
// We inherit this because the input will only notify on quality changes, not
// if it is the same as the previous track
pb_session.reading_now->quality = pb_session.reading_now->prev->quality;
pb_session.reading_now->output_buffer_samples = pb_session.reading_now->prev->output_buffer_samples;
pb_session.reading_now->read_start = pb_session.pos;
pb_session.reading_now->play_start = pb_session.pos + pb_session.reading_now->output_buffer_samples;
}
static void
session_update_read_start(uint32_t seek_ms)
{
pb_session.reading_now = pb_session.source_list;
// There is nothing to play
if (!pb_session.reading_now)
return;
pb_session.reading_now->pos_ms = seek_ms;
pb_session.reading_now->seek_ms = seek_ms;
pb_session.reading_now->read_start = pb_session.pos;
pb_session.playing_now = pb_session.reading_now;
}
static inline void
session_update_read(int nsamples)
{
uint32_t step_ms;
// Did we just complete our first read? Then set the start timestamp
if (pb_session.start_ts.tv_sec == 0)
{
clock_gettime_with_res(CLOCK_MONOTONIC, &pb_session.start_ts, &player_timer_res);
pb_session.pts = pb_session.start_ts;
}
// Advance position
pb_session.pos += nsamples;
// Need to know sample rate to calculate pos_ms step
if (!pb_session.playing_now->quality.sample_rate)
return;
step_ms = (1000 * nsamples) / pb_session.playing_now->quality.sample_rate;
// After we have started playing we also must calculate new pos_ms
if (pb_session.pos > pb_session.playing_now->play_start)
pb_session.playing_now->pos_ms += step_ms;
}
static void
session_update_read_quality(struct media_quality *quality)
{
int samples_per_read;
if (quality_is_equal(quality, &pb_session.quality))
goto out;
pb_session.quality = *quality;
pb_session.reading_now->quality = *quality;
samples_per_read = ((uint64_t)quality->sample_rate * (player_tick_interval.tv_nsec / 1000000)) / 1000;
pb_session.reading_now->output_buffer_samples = OUTPUTS_BUFFER_DURATION * quality->sample_rate;
pb_session.bufsize = STOB(samples_per_read, quality->bits_per_sample, quality->channels);
pb_session.read_deficit_max = STOB(((uint64_t)quality->sample_rate * PLAYER_READ_BEHIND_MAX) / 1000, quality->bits_per_sample, quality->channels);
DPRINTF(E_DBG, L_PLAYER, "New session values (q=%d/%d/%d, spr=%d, bufsize=%zu)\n",
quality->sample_rate, quality->bits_per_sample, quality->channels, samples_per_read, pb_session.bufsize);
if (pb_session.buffer)
pb_session.buffer = realloc(pb_session.buffer, pb_session.bufsize);
else
pb_session.buffer = malloc(pb_session.bufsize);
CHECK_NULL(L_PLAYER, pb_session.buffer);
// Maybe we should actually adjust play_start and play_end of all items in the
// source list when the quality changes?
pb_session.reading_now->play_start = pb_session.reading_now->read_start + pb_session.reading_now->output_buffer_samples;
if (pb_session.reading_now->prev)
pb_session.reading_now->prev->play_end = pb_session.reading_now->play_start;
out:
free(quality);
}
static void
session_update_read_metadata(void)
{
if (!pb_session.reading_now)
return;
// Sets when to trigger the next event_play_metadata()
pb_session.reading_now->metadata_update = metadata_pending_next_pos();
}
static void
session_update_play_metadata(struct input_metadata *metadata)
{
if (metadata->pos_is_updated)
pb_session.playing_now->pos_ms = metadata->pos_ms;
if (metadata->len_ms)
pb_session.playing_now->len_ms = metadata->len_ms;
}
static void
session_restart(void)
{
pb_session.start_ts.tv_sec = 0;
pb_session.start_ts.tv_nsec = 0;
pb_session.pts.tv_sec = 0;
pb_session.pts.tv_nsec = 0;
pb_session.read_deficit = 0;
pb_session.metadata_sent = 0;
}
static void
session_stop(void)
{
struct player_source *ps;
free(pb_session.buffer);
pb_session.buffer = NULL;
for (ps = pb_session.source_list; pb_session.source_list; ps = pb_session.source_list)
{
pb_session.source_list = ps->prev;
source_free(&ps);
}
memset(&pb_session, 0, sizeof(struct player_session));
}
static void
session_start(struct player_source *ps)
{
session_stop();
pb_session.source_list = ps;
}
/* ------------------------- Playback event handlers ------------------------ */
static void
event_read_quality(struct media_quality *quality)
{
DPRINTF(E_DBG, L_PLAYER, "event_read_quality()\n");
session_update_read_quality(quality);
}
// Stuff to do when read of current track ends
static void
event_read_eof()
{
DPRINTF(E_DBG, L_PLAYER, "event_read_eof()\n");
session_update_read_eof();
}
static void
event_read_error()
{
DPRINTF(E_DBG, L_PLAYER, "event_read_error()\n");
db_queue_delete_byitemid(pb_session.reading_now->item_id);
event_read_eof();
}
// Kicks of input reading of next source (async)
static void
event_read_start_next()
{
DPRINTF(E_DBG, L_PLAYER, "event_read_start_next()\n");
struct player_source *ps = source_next_create(pb_session.source_list);
if (!ps)
return;
// Attaches next item to pb_session.source_list
session_update_read_next(ps);
// Starts the input read loop
source_next(pb_session.source_list);
}
static void
event_read_metadata(struct input_metadata *metadata)
{
uint64_t delay;
int ret;
DPRINTF(E_DBG, L_PLAYER, "event_read_metadata()\n");
// Add the metadata to the register of pending events with a trigger position
// that corresponds to OUTPUTS_BUFFER_DURATION into the future. If we have
// received a negative position we assume the metadata needs to be delayed
// until the position is 0.
if (metadata->pos_is_updated && metadata->pos_ms < 0)
{
delay = pb_session.reading_now->output_buffer_samples + (-metadata->pos_ms) * (uint64_t)pb_session.reading_now->quality.sample_rate / 1000;
metadata->pos_ms = 0;
}
else
delay = pb_session.reading_now->output_buffer_samples;
ret = metadata_pending_add(metadata, pb_session.pos + delay);
if (ret < 0)
{
input_metadata_free(metadata, 0);
return;
}
session_update_read_metadata();
}
static void
event_play_end()
{
DPRINTF(E_DBG, L_PLAYER, "event_play_end()\n");
pb_abort();
}
// Stuff to do when playback of current track ends
static void
event_play_eof()
{
DPRINTF(E_DBG, L_PLAYER, "event_play_eof()\n");
int id = (int)pb_session.playing_now->id;
if (id != DB_MEDIA_FILE_NON_PERSISTENT_ID)
{
worker_execute(playcount_inc_cb, &id, sizeof(int), 5);
#ifdef LASTFM
worker_execute(scrobble_cb, &id, sizeof(int), 8);
#endif
history_add(pb_session.playing_now->id, pb_session.playing_now->item_id);
}
if (consume)
db_queue_delete_byitemid(pb_session.playing_now->item_id);
if (pb_session.playing_now->next)
outputs_metadata_send(pb_session.playing_now->next->item_id, false, metadata_finalize_cb);
session_update_play_eof();
}
static void
event_play_start()
{
DPRINTF(E_DBG, L_PLAYER, "event_play_start()\n");
if (!pb_session.metadata_sent)
{
outputs_metadata_send(pb_session.playing_now->item_id, true, metadata_finalize_cb);
pb_session.metadata_sent = 1;
}
session_update_play_start();
status_update(PLAY_PLAYING, LISTENER_PLAYER);
}
static void
event_play_metadata()
{
int i;
DPRINTF(E_DBG, L_PLAYER, "event_play_metadata()\n");
for (i = 0; i < ARRAY_SIZE(metadata_pending); i++)
{
// Proces all events with position from metadata_update (included) to
// current read position (excluded)
if (!(metadata_pending[i].pos >= pb_session.playing_now->metadata_update && metadata_pending[i].pos < pb_session.pos))
continue;
// Just in case
if (!metadata_pending[i].metadata)
continue;
session_update_play_metadata(metadata_pending[i].metadata);
// Triggers an async chain of metadata update, first worker will do an
// update of the db, then the player will update outputs, where the worker
// may be called by the output, and then player sends status_update
worker_execute(metadata_update_queue_cb, &(metadata_pending[i].metadata), sizeof(metadata_pending[i].metadata), 0);
memset(&metadata_pending[i], 0, sizeof(struct metadata_pending_register));
}
// Set trigger (playing_now->metadata_update) to next pending metadata
session_update_read_metadata();
}
// Checks if the new playback position requires change of play status, plus
// calls session_update_read that updates playback position
static inline void
event_read(int nsamples)
{
// Shouldn't happen, playing_now must be set during playback, but check anyway
if (!pb_session.playing_now)
return;
if (pb_session.playing_now->play_end != 0 && pb_session.pos + nsamples >= pb_session.playing_now->play_end)
{
event_play_eof();
if (!pb_session.playing_now)
{
event_play_end();
return;
}
}
session_update_read(nsamples);
// Check if the playback position passed the play_start position
if (pb_session.pos > pb_session.playing_now->play_start && pb_session.pos <= pb_session.playing_now->play_start + nsamples)
event_play_start();
if (pb_session.playing_now->metadata_update == 0)
return;
// Check if the playback position passed an input metadata update. The event
// must process all metadata updates in the read interval.
if (pb_session.pos > pb_session.playing_now->metadata_update && pb_session.pos <= pb_session.playing_now->metadata_update + nsamples)
event_play_metadata();
}
/* ---- Main playback stuff: Start, read, write and playback timer event ---- */
// Returns -1 on error or bytes read (possibly 0)
static inline int
source_read(int *nbytes, int *nsamples, uint8_t *buf, int len)
{
short flag;
void *flagdata;
// We can get into this condition if a) we finished reading, but are still
// playing (playing_now is non-null), or b) the calling loop tries to catch up
// with an overrun or a deficit, but playback ended in the first iteration (in
// which case playing_now is null). Note that a) also can occur if the input
// starts with input_write(NULL, NULL, INPUT_FLAG_ERROR).
if (!pb_session.reading_now)
{
// This is only for case a). If we are in case b) the session was zeroed,
// which means nsamples will become zero. Quality can be zero if the input
// failed immediately, i.e. never passed INPUT_FLAG_QUALITY.
*nbytes = len;
*nsamples = (len != 0) ? BTOS(*nbytes, pb_session.quality.bits_per_sample, pb_session.quality.channels) : 0;
// In case a) this advances playback position and possibly ends playback,
// i.e. sets playing_now to null
event_read(*nsamples);
if (!pb_session.playing_now)
{
*nbytes = 0;
*nsamples = 0;
return 0;
}
// Stream silence if playback didn't end yet
memset(buf, 0, len);
return 0;
}
*nsamples = 0;
*nbytes = input_read(buf, len, &flag, &flagdata);
if ((*nbytes < 0) || (flag == INPUT_FLAG_ERROR))
{
DPRINTF(E_LOG, L_PLAYER, "Error reading source '%s' (id=%d)\n", pb_session.reading_now->path, pb_session.reading_now->id);
event_read_error();
return -1;
}
else if (flag == INPUT_FLAG_START_NEXT)
{
event_read_start_next();
}
else if (flag == INPUT_FLAG_EOF)
{
event_read_eof();
}
else if (flag == INPUT_FLAG_METADATA)
{
event_read_metadata((struct input_metadata *)flagdata);
}
else if (flag == INPUT_FLAG_QUALITY)
{
event_read_quality((struct media_quality *)flagdata);
}
if (*nbytes == 0 || pb_session.quality.channels == 0)
{
event_read(0); // This will set start_ts even if source isn't open yet
return 0;
}
*nsamples = BTOS(*nbytes, pb_session.quality.bits_per_sample, pb_session.quality.channels);
event_read(*nsamples);
return 0;
}
static void
playback_cb(int fd, short what, void *arg)
{
struct timespec ts;
uint64_t overrun;
int nbytes;
int nsamples;
int i;
int ret;
// Check if we missed any timer expirations
overrun = 0;
#ifdef HAVE_TIMERFD
ret = read(fd, &overrun, sizeof(overrun));
if (ret <= 0)
DPRINTF(E_LOG, L_PLAYER, "Error reading timer\n");
else if (overrun > 0)
overrun--;
#else
ret = timer_getoverrun(pb_timer);
if (ret < 0)
DPRINTF(E_LOG, L_PLAYER, "Error getting timer overrun\n");
else
overrun = ret;
#endif /* HAVE_TIMERFD */
// We are too delayed, probably some output blocked: reset if first overrun or abort if second overrun
if (overrun > pb_write_deficit_max)
{
if (pb_write_recovery)
{
DPRINTF(E_LOG, L_PLAYER, "Permanent output delay detected (behind=%" PRIu64 ", max=%d), aborting\n", overrun, pb_write_deficit_max);
pb_abort();
return;
}
DPRINTF(E_LOG, L_PLAYER, "Output delay detected (behind=%" PRIu64 ", max=%d), resetting all outputs\n", overrun, pb_write_deficit_max);
pb_write_recovery = true;
player_flush_pending = pb_suspend();
// No devices to wait for, just set the restart cb right away. Otherwise
// the trigger will be set by device_flush_cb.
if (player_flush_pending == 0)
input_buffer_full_cb(player_playback_start);
return;
}
else
{
if (overrun > 1) // An overrun of 1 is no big deal
DPRINTF(E_WARN, L_PLAYER, "Output delay detected: player is %" PRIu64 " ticks behind, catching up\n", overrun);
pb_write_recovery = false;
}
#ifdef DEBUG_PLAYER
session_dump(true);
#endif
// The pessimistic approach: Assume you won't get anything, then anything that
// comes your way is a positive surprise.
pb_session.read_deficit += (1 + overrun) * pb_session.bufsize;
// If there was an overrun, we will try to read/write a corresponding number
// of times so we catch up. The read from the input is non-blocking, so it
// should not bring us further behind, even if there is no data.
for (i = 1 + overrun; i > 0; i--)
{
ret = source_read(&nbytes, &nsamples, pb_session.buffer, pb_session.bufsize);
if (ret < 0)
{
DPRINTF(E_LOG, L_PLAYER, "Error reading from source\n");
pb_session.read_deficit -= pb_session.bufsize;
break;
}
if (nbytes == 0)
{
break;
}
pb_session.read_deficit -= nbytes;
outputs_write(pb_session.buffer, nbytes, nsamples, &pb_session.quality, &pb_session.pts);
if (nbytes < pb_session.bufsize)
{
// How much the number of samples we got corresponds to in time (nanoseconds)
ts.tv_sec = 0;
ts.tv_nsec = 1000000000UL * (uint64_t)nsamples / pb_session.quality.sample_rate;
DPRINTF(E_DBG, L_PLAYER, "Incomplete read, wanted %zu, got %d (samples=%d/time=%lu), deficit %zu\n", pb_session.bufsize, nbytes, nsamples, ts.tv_nsec, pb_session.read_deficit);
pb_session.pts = timespec_add(pb_session.pts, ts);
}
else
{
// We got a full frame, so that means we can also advance the presentation timestamp by a full tick
pb_session.pts = timespec_add(pb_session.pts, player_tick_interval);
// It is going well, lets take another round to repay our debt
if (i == 1 && pb_session.read_deficit > pb_session.bufsize)
i = 2;
}
}
if (pb_session.read_deficit_max && pb_session.read_deficit > pb_session.read_deficit_max)
{
DPRINTF(E_LOG, L_PLAYER, "Source is not providing sufficient data, temporarily suspending playback (deficit=%zu/%zu bytes)\n",
pb_session.read_deficit, pb_session.read_deficit_max);
player_flush_pending = pb_suspend();
// No devices to wait for, just set the restart cb right away. Otherwise
// the trigger will be set by device_flush_cb.
if (player_flush_pending == 0)
input_buffer_full_cb(player_playback_start);
}
}
/* ----------------- Output device handling (add/remove etc) ---------------- */
static enum command_state
device_add(void *arg, int *retval)
{
union player_arg *cmdarg = arg;
struct output_device *device = cmdarg->device;
bool new_deselect;
// Never turn on new devices during playback
new_deselect = (player_state == PLAY_PLAYING);
device = outputs_device_add(device, new_deselect);
if (!device)
{
*retval = -1;
return COMMAND_END;
}
status_update(player_state, LISTENER_SPEAKER | LISTENER_VOLUME);
*retval = 0;
return COMMAND_END;
}
static enum command_state
device_remove_family(void *arg, int *retval)
{
union player_arg *cmdarg = arg;
struct output_device *remove;
struct output_device *device;
remove = cmdarg->device;
device = outputs_device_get(remove->id);
if (!device)
{
DPRINTF(E_WARN, L_PLAYER, "The %s device '%s' stopped advertising, but not in our list\n", remove->type_name, remove->name);
outputs_device_free(remove);
*retval = 0;
return COMMAND_END;
}
// v{4,6}_port non-zero indicates the address family stopped advertising
if (remove->v4_port && device->v4_address)
{
free(device->v4_address);
device->v4_address = NULL;
device->v4_port = 0;
}
if (remove->v6_port && device->v6_address)
{
free(device->v6_address);
device->v6_address = NULL;
device->v6_port = 0;
}
if (!device->v4_address && !device->v6_address)
{
device->advertised = 0;
// If there is a session we will keep the device in the list until the
// backend gives us a callback with a failure. Then outputs.c will remove
// the device. If the output backend never gives a callback (can that
// happen?) then the device will never be removed.
if (!device->session)
outputs_device_remove(device);
}
outputs_device_free(remove);
status_update(player_state, LISTENER_SPEAKER | LISTENER_VOLUME);
*retval = 0;
return COMMAND_END;
}
static enum command_state
device_auth_kickoff(void *arg, int *retval)
{
union player_arg *cmdarg = arg;
struct output_device *device;
// First find the device requiring verification
for (device = outputs_list(); device; device = device->next)
{
if (device->type == cmdarg->auth.type && device->state == OUTPUT_STATE_PASSWORD)
break;
}
if (!device)
{
*retval = -1;
return COMMAND_END;
}
// We're async, so we don't care about return values or callbacks with result
outputs_device_authorize(device, cmdarg->auth.pin, NULL);
*retval = 0;
return COMMAND_END;
}
/* -------- Output device callbacks executed in the player thread ----------- */
static void
device_streaming_cb(struct output_device *device, enum output_device_state status)
{
if (!device)
{
DPRINTF(E_LOG, L_PLAYER, "Output device disappeared during streaming!\n");
}
else if (status == OUTPUT_STATE_FAILED)
{
DPRINTF(E_WARN, L_PLAYER, "The %s device '%s' failed\n", device->type_name, device->name);
// The device can fail outside of playback, e.g. if it disconnects after a
// flush command
if (player_state != PLAY_PLAYING)
goto out;
if (outputs_sessions_count() == 0)
pb_suspend();
if (!device->resurrect)
goto out;
DPRINTF(E_LOG, L_PLAYER, "Attempting reconnection in %d sec to the %s device '%s'\n", PLAYER_SPEAKER_RESURRECT_TIME, device->type_name, device->name);
// TODO do this internally instead of through the worker
worker_execute(player_speaker_resurrect, &(device->id), sizeof(device->id), PLAYER_SPEAKER_RESURRECT_TIME);
}
else if (status == OUTPUT_STATE_STOPPED)
{
DPRINTF(E_INFO, L_PLAYER, "The %s device '%s' stopped\n", device->type_name, device->name);
}
else
{
DPRINTF(E_DBG, L_PLAYER, "Callback from %s device %s to device_streaming_cb (status %d)\n", device->type_name, device->name, status);
outputs_device_cb_set(device, device_streaming_cb);
}
out:
// We don't do this in the other cb's because they are triggered by a command
// and thus the update should be done as part of the command completion (which
// can better determine which type of listener event to use)
status_update(player_state, LISTENER_SPEAKER | LISTENER_VOLUME);
}
static void
device_volume_cb(struct output_device *device, enum output_device_state status)
{
if (!device)
{
DPRINTF(E_LOG, L_PLAYER, "Output device disappeared before command completion!\n");
goto out;
}
else if (status == OUTPUT_STATE_FAILED)
{
DPRINTF(E_LOG, L_PLAYER, "The %s device '%s' failed during execution of volume command\n", device->type_name, device->name);
goto out;
}
DPRINTF(E_DBG, L_PLAYER, "Callback from %s device %s to device_volume_cb (status %d)\n", device->type_name, device->name, status);
outputs_device_cb_set(device, device_streaming_cb);
out:
// If a failure occurred when setting the volume, and we also don't have other
// active sessions, then we suspend playback
if (outputs_sessions_count() == 0)
pb_suspend();
commands_exec_end(cmdbase, 0);
}
static void
device_flush_cb(struct output_device *device, enum output_device_state status)
{
if (!device)
{
DPRINTF(E_LOG, L_PLAYER, "Output device disappeared before flush completion!\n");
goto out;
}
else if (status == OUTPUT_STATE_FAILED)
{
DPRINTF(E_LOG, L_PLAYER, "The %s device '%s' failed during execution of flush command\n", device->type_name, device->name);
goto out;
}
DPRINTF(E_DBG, L_PLAYER, "Callback from %s device %s to device_flush_cb (status %d)\n", device->type_name, device->name, status);
// Used by pb_suspend - is basically the bottom half
if (player_flush_pending > 0)
{
player_flush_pending--;
if (player_flush_pending == 0)
input_buffer_full_cb(player_playback_start);
}
outputs_device_stop_delayed(device, device_streaming_cb);
out:
commands_exec_end(cmdbase, 0);
}
static void
device_shutdown_cb(struct output_device *device, enum output_device_state status)
{
int retval;
retval = commands_exec_returnvalue(cmdbase);
if (!device)
{
DPRINTF(E_WARN, L_PLAYER, "Output device disappeared before shutdown completion!\n");
if (retval != -2)
retval = -1;
goto out;
}
DPRINTF(E_DBG, L_PLAYER, "Callback from %s device %s to device_shutdown_cb (status %d)\n", device->type_name, device->name, status);
out:
commands_exec_end(cmdbase, retval);
}
static void
device_activate_cb(struct output_device *device, enum output_device_state status)
{
int retval;
retval = commands_exec_returnvalue(cmdbase);
if (!device)
{
DPRINTF(E_WARN, L_PLAYER, "Output device disappeared during activation!\n");
if (retval != -2)
retval = -1;
goto out;
}
DPRINTF(E_DBG, L_PLAYER, "Callback from %s device %s to device_activate_cb (status %d)\n", device->type_name, device->name, status);
if (status == OUTPUT_STATE_PASSWORD)
{
DPRINTF(E_LOG, L_PLAYER, "The %s device '%s' requires a valid PIN or password\n", device->type_name, device->name);
outputs_device_deselect(device);
retval = -2;
goto out;
}
if (status == OUTPUT_STATE_FAILED)
{
DPRINTF(E_LOG, L_PLAYER, "The %s device '%s' failed to activate\n", device->type_name, device->name);
outputs_device_deselect(device);
if (retval != -2)
retval = -1;
goto out;
}
// If we were just probing or doing device verification this is a no-op, since
// there is no session any more
outputs_device_cb_set(device, device_streaming_cb);
out:
commands_exec_end(cmdbase, retval);
}
const char *
player_pmap(void *p)
{
if (p == device_activate_cb)
return "device_activate_cb";
else if (p == device_streaming_cb)
return "device_streaming_cb";
else if (p == device_volume_cb)
return "device_volume_cb";
else if (p == device_flush_cb)
return "device_flush_cb";
else if (p == device_shutdown_cb)
return "device_shutdown_cb";
else
return "unknown";
}
/* ------------------------- Internal playback routines --------------------- */
static int
pb_timer_start(void)
{
struct itimerspec tick;
int ret;
// The stop timers will be active if we have recently paused, but now that the
// playback loop has been kicked off, we deactivate them
outputs_stop_delayed_cancel();
ret = event_add(pb_timer_ev, NULL);
if (ret < 0)
{
DPRINTF(E_LOG, L_PLAYER, "Could not add playback timer\n");
return -1;
}
tick.it_interval = player_tick_interval;
tick.it_value = player_tick_interval;
#ifdef HAVE_TIMERFD
ret = timerfd_settime(pb_timer_fd, 0, &tick, NULL);
#else
ret = timer_settime(pb_timer, 0, &tick, NULL);
#endif
if (ret < 0)
{
DPRINTF(E_LOG, L_PLAYER, "Could not arm playback timer: %s\n", strerror(errno));
return -1;
}
return 0;
}
static int
pb_timer_stop(void)
{
struct itimerspec tick;
int ret;
event_del(pb_timer_ev);
memset(&tick, 0, sizeof(struct itimerspec));
#ifdef HAVE_TIMERFD
ret = timerfd_settime(pb_timer_fd, 0, &tick, NULL);
#else
ret = timer_settime(pb_timer, 0, &tick, NULL);
#endif
if (ret < 0)
{
DPRINTF(E_LOG, L_PLAYER, "Could not disarm playback timer: %s\n", strerror(errno));
return -1;
}
return 0;
}
// Initiates the session and starts the input source
static int
pb_session_start(struct db_queue_item *queue_item, uint32_t seek_ms)
{
struct player_source *ps;
uint32_t item_id;
int ret;
ps = source_create(queue_item, seek_ms);
// Clears the session and attaches the new source as pb_session.source_list
session_start(ps);
// Sets of opening of the new source
while ( (ret = source_start(ps)) < 0)
{
// Couldn't start requested item, skip to next and remove failed item from queue
item_id = ps->item_id;
ps = source_next_create(ps);
// Will free pb_session.source_list so we don't memleak failed sources
session_start(ps);
db_queue_delete_byitemid(item_id);
}
session_update_read_start((uint32_t)ret);
if (!pb_session.playing_now)
return -1;
return ret;
}
// Stops input source and stops read loop
static void
pb_session_pause(void)
{
pb_timer_stop();
seek_save();
source_stop();
}
// Stops input source and deallocates pb_session content
static void
pb_session_stop(void)
{
pb_timer_stop();
seek_save();
source_stop();
session_stop();
status_update(PLAY_STOPPED, LISTENER_PLAYER);
}
static void
pb_abort(void)
{
// Immediate stop of all outputs
outputs_stop(device_streaming_cb);
outputs_metadata_purge();
pb_session_stop();
if (!clear_queue_on_stop_disabled)
db_queue_clear(0);
}
// Restarts the input (in case it was closed during the pause), resets session
// start timestamp and deficits, which is necessary after pb_suspend.
static int
pb_resume(void)
{
struct player_source *ps;
int ret;
// Before pb_resume() is called it is important that source_list is set to
// have just one item, and that both reading_now and playing_now point to it.
// Otherwise it would mean that the input is currently reading an item that is
// not being played, which means asking the input to resume playing_now
// will bring us into a situation where the order of data read by input_read()
// from the data input_buffer will not the match the order of the source_list.
ps = pb_session.source_list;
if (!ps || ps != pb_session.playing_now)
{
DPRINTF(E_LOG, L_PLAYER, "Bug! pb_resume() called, but source list is invalid (%p, %p)\n", ps, pb_session.playing_now);
pb_abort();
return -1;
}
// In many cases the input will already be open, so this only has effect if
// we are resuming after pause longer than INPUT_OPEN_TIMEOUT, or if the input
// lost connection during the pause
ret = source_restart(ps);
if (ret < 0)
{
pb_abort();
return -1;
}
session_restart();
return 0;
}
// Temporarily suspends/resets playback, used when input buffer underruns or in
// case of problems writing to the outputs.
static int
pb_suspend(void)
{
struct db_queue_item *queue_item;
int flush_pending;
int ret;
// If ->next is set then suspend was called during a track change, which is a
// tricky time. To simplify things, we reset the entire session, which also
// means resetting the input, but still letting it proceed with the head of
// source_list. Ideally, we instead want to resume with playing_now, because
// with the current solution the user will loose a bit of audio. In practice,
// that causes issues, because sometimes pb_suspend() is called because of an
// output delay, which was caused by e.g. changing quality of the output
// during track change. So going back to playing_now would make that repeat.
if (pb_session.playing_now->next)
{
// So we restart the session with the head source, not playing_now
queue_item = db_queue_fetch_byitemid(pb_session.source_list->item_id);
if (!queue_item)
{
DPRINTF(E_LOG, L_PLAYER, "Error suspending playback, could not retrieve queue item currently being played\n");
pb_abort();
return -1;
}
ret = pb_session_start(queue_item, 0);
free_queue_item(queue_item, 0);
if (ret < 0)
{
DPRINTF(E_LOG, L_PLAYER, "Error suspending playback, could not start session\n");
pb_abort();
return -1;
}
}
flush_pending = outputs_flush(device_flush_cb);
pb_timer_stop();
status_update(PLAY_PAUSED, LISTENER_PLAYER);
seek_save();
return flush_pending;
}
/* --------------- Actual commands, executed in the player thread ----------- */
static enum command_state
get_status(void *arg, int *retval)
{
struct player_status *status = arg;
memset(status, 0, sizeof(struct player_status));
status->shuffle = shuffle;
status->consume = consume;
status->repeat = repeat;
status->volume = outputs_volume_get();
status->plid = cur_plid;
switch (player_state)
{
case PLAY_STOPPED:
DPRINTF(E_DBG, L_PLAYER, "Player status: stopped\n");
status->status = PLAY_STOPPED;
break;
case PLAY_PAUSED:
DPRINTF(E_DBG, L_PLAYER, "Player status: paused\n");
status->status = PLAY_PAUSED;
status->id = pb_session.playing_now->id;
status->item_id = pb_session.playing_now->item_id;
status->pos_ms = pb_session.playing_now->pos_ms;
status->len_ms = pb_session.playing_now->len_ms;
break;
case PLAY_PLAYING:
if (pb_session.playing_now->play_start == 0 || pb_session.pos < pb_session.playing_now->play_start)
{
DPRINTF(E_DBG, L_PLAYER, "Player status: playing (buffering)\n");
status->status = PLAY_PAUSED;
}
else
{
DPRINTF(E_DBG, L_PLAYER, "Player status: playing\n");
status->status = PLAY_PLAYING;
}
status->id = pb_session.playing_now->id;
status->item_id = pb_session.playing_now->item_id;
status->pos_ms = pb_session.playing_now->pos_ms;
status->len_ms = pb_session.playing_now->len_ms;
break;
}
*retval = 0;
return COMMAND_END;
}
static enum command_state
playing_now(void *arg, int *retval)
{
uint32_t *id = arg;
if (player_state == PLAY_STOPPED)
{
*retval = -1;
return COMMAND_END;
}
*id = pb_session.playing_now->id;
*retval = 0;
return COMMAND_END;
}
static enum command_state
playback_stop(void *arg, int *retval)
{
if (player_state == PLAY_STOPPED)
{
*retval = 0;
return COMMAND_END;
}
if (pb_session.playing_now && pb_session.playing_now->pos_ms > 0)
history_add(pb_session.playing_now->id, pb_session.playing_now->item_id);
// We may be restarting very soon, so we don't bring the devices to a full
// stop just yet; this saves time when restarting, which is nicer for the user
*retval = outputs_flush(device_flush_cb);
outputs_metadata_purge();
// Stops the input
pb_session_stop();
status_update(PLAY_STOPPED, LISTENER_PLAYER);
// We're async if we need to flush devices
if (*retval > 0)
return COMMAND_PENDING;
return COMMAND_END;
}
static enum command_state
playback_abort(void *arg, int *retval)
{
pb_abort();
*retval = 0;
return COMMAND_END;
}
static enum command_state
playback_start_bh(void *arg, int *retval)
{
int ret;
ret = pb_timer_start();
if (ret < 0)
goto error;
// We also ask listeners to update speaker/volume state, since it is possible
// some of the speakers we tried to start responded with failure
status_update(PLAY_PLAYING, LISTENER_PLAYER | LISTENER_SPEAKER | LISTENER_VOLUME);
*retval = 0;
return COMMAND_END;
error:
pb_abort();
*retval = -1;
return COMMAND_END;
}
static enum command_state
playback_start_item(void *arg, int *retval)
{
struct db_queue_item *queue_item = arg;
struct media_file_info *mfi;
struct output_device *device;
uint32_t seek_ms;
int ret;
if (player_state == PLAY_PLAYING)
{
DPRINTF(E_DBG, L_PLAYER, "Player is already playing, ignoring call to playback start\n");
status_update(player_state, LISTENER_PLAYER);
*retval = 1; // Value greater 0 will prevent execution of the bottom half function
return COMMAND_END;
}
if (player_state == PLAY_STOPPED && !queue_item)
{
DPRINTF(E_LOG, L_PLAYER, "Failed to start/resume playback, no queue item given\n");
*retval = -1;
return COMMAND_END;
}
if (!queue_item)
{
ret = pb_resume();
if (ret < 0)
{
*retval = -1;
return COMMAND_END;
}
}
else
{
// Start playback for given queue item
DPRINTF(E_DBG, L_PLAYER, "Start playback of '%s' (id=%d, item-id=%d)\n", queue_item->path, queue_item->file_id, queue_item->id);
// Look up where we should start
seek_ms = 0;
if (queue_item->file_id > 0)
{
mfi = db_file_fetch_byid(queue_item->file_id);
if (mfi)
{
seek_ms = mfi->seek;
free_mfi(mfi, 0);
}
}
ret = pb_session_start(queue_item, seek_ms);
if (ret < 0)
{
*retval = -1;
return COMMAND_END;
}
}
// Start sessions on selected devices. We shouldn't see any callbacks to
// device_shutdown_cb, since the unselected devices shouldn't have sessions.
*retval = outputs_start(device_activate_cb, device_shutdown_cb, false);
if (*retval < 0)
DPRINTF(E_WARN, L_PLAYER, "All selected speakers failed to start\n");
// autoselect also applies in non-error cases (if no devices were selected).
// Note that if session count is 0 then retval should never be positive,
// because that would mean we are initiating a session. Just to be safe, we
// check anyway.
if (speaker_autoselect && outputs_sessions_count() == 0 && *retval <= 0)
{
for (device = outputs_list(); device; device = device->next)
{
if (device->selected || outputs_priority(device) == 0 || device->session)
continue;
*retval = outputs_device_start(device, device_activate_cb, false);
if (*retval < 0)
continue;
DPRINTF(E_LOG, L_PLAYER, "Autoselected %s device '%s'\n", device->type_name, device->name);
outputs_device_select(device, -1);
break;
}
}
// We're async if we need to wait for devices starting
if (*retval > 0)
return COMMAND_PENDING; // async
// Otherwise, just run the bottom half
*retval = 0;
return COMMAND_END;
}
static enum command_state
playback_start_id(void *arg, int *retval)
{
struct query_params qp = { .type = Q_ITEMS };
struct db_queue_item *queue_item = NULL;
union player_arg *cmdarg = arg;
enum command_state cmd_state;
int new_item_id;
int ret;
*retval = -1;
if (player_state == PLAY_STOPPED)
{
db_queue_clear(0);
qp.id = cmdarg->id;
ret = db_queue_add_by_query(&qp, 0, 0, -1, NULL, &new_item_id);
if (ret < 0)
return COMMAND_END;
queue_item = db_queue_fetch_byitemid(new_item_id);
if (!queue_item)
return COMMAND_END;
}
cmd_state = playback_start_item(queue_item, retval);
free_queue_item(queue_item, 0);
return cmd_state;
}
static enum command_state
playback_start(void *arg, int *retval)
{
struct db_queue_item *queue_item = NULL;
enum command_state cmd_state;
*retval = -1;
if (player_state == PLAY_STOPPED)
{
// Start playback of first item in queue
queue_item = db_queue_fetch_bypos(0, shuffle);
if (!queue_item)
return COMMAND_END;
}
cmd_state = playback_start_item(queue_item, retval);
free_queue_item(queue_item, 0);
return cmd_state;
}
static enum command_state
playback_prev_bh(void *arg, int *retval)
{
struct db_queue_item *queue_item = NULL;
int ret;
// outputs_flush() in playback_pause() may have a caused a failure callback
// from the output, which in streaming_cb() can cause pb_abort()
if (player_state == PLAY_STOPPED)
{
goto error;
}
// Only add to history if playback started
if (pb_session.playing_now->pos_ms > 0)
history_add(pb_session.playing_now->id, pb_session.playing_now->item_id);
// Only skip to the previous song if the playing time is less than 3 seconds
if (pb_session.playing_now->pos_ms < 3000)
queue_item = queue_item_prev(pb_session.playing_now->item_id);
// If there is no previous item in the queue or playing time is greater than 3 seconds, restart the current item
if (!queue_item)
queue_item = db_queue_fetch_byitemid(pb_session.playing_now->item_id);
if (!queue_item)
{
DPRINTF(E_DBG, L_PLAYER, "Error finding previous source, queue item has disappeared\n");
goto error;
}
ret = pb_session_start(queue_item, 0);
free_queue_item(queue_item, 0);
if (ret < 0)
{
DPRINTF(E_DBG, L_PLAYER, "Error skipping to previous item, aborting playback\n");
goto error;
}
// Silent status change - playback_start() sends the real status update
player_state = PLAY_PAUSED;
*retval = 0;
return COMMAND_END;
error:
pb_abort();
*retval = -1;
return COMMAND_END;
}
static enum command_state
playback_next_bh(void *arg, int *retval)
{
struct db_queue_item *queue_item;
int ret;
int id;
// outputs_flush() in playback_pause() may have a caused a failure callback
// from the output, which in streaming_cb() can cause pb_abort()
if (player_state == PLAY_STOPPED)
{
goto error;
}
// Only add to history if playback started
if (pb_session.playing_now->pos_ms > 0)
{
history_add(pb_session.playing_now->id, pb_session.playing_now->item_id);
id = (int)(pb_session.playing_now->id);
worker_execute(skipcount_inc_cb, &id, sizeof(int), 5);
}
queue_item = queue_item_next(pb_session.playing_now->item_id);
if (consume)
db_queue_delete_byitemid(pb_session.playing_now->item_id);
if (!queue_item)
{
DPRINTF(E_DBG, L_PLAYER, "Error finding next source, end of queue reached or queue item has disappeared\n");
goto error;
}
ret = pb_session_start(queue_item, 0);
free_queue_item(queue_item, 0);
if (ret < 0)
{
DPRINTF(E_DBG, L_PLAYER, "Error skipping to next item, aborting playback\n");
goto error;
}
// Silent status change - playback_start() sends the real status update
player_state = PLAY_PAUSED;
*retval = 0;
return COMMAND_END;
error:
pb_abort();
*retval = -1;
return COMMAND_END;
}
/**
* Based on the given seek parameters "seek_param" and the current playing track, the queue item and the absolute
* position in milliseconds are calculated.
*
* @param queue_item out: queue item to play after the seek
* @param position_ms out: absolute position in milliseconds the queue_item shoud start playing after the seek
* @param seek_param in: seek parameters
* @return 0 on success, -1 on error
*/
static int
seek_calc_position_ms(struct db_queue_item **queue_item, int *position_ms, struct player_seek_param *seek_param)
{
struct db_queue_item *seek_queue_item = NULL;
int seek_ms = 0;
// Initialize out parameters
*queue_item = NULL;
*position_ms = 0;
// Calculate seek position
if (seek_param->mode == PLAYER_SEEK_POSITION)
seek_ms = seek_param->ms;
else
seek_ms = pb_session.playing_now->pos_ms + seek_param->ms;
// Check if we need to switch to a previous track, this will be done if we are in the first 3 seconds
// of a track and we have a seek request for more than 3 seconds
if (seek_ms < 0)
{
if (pb_session.playing_now->pos_ms < 3000)
{
// We are in the first 3 seconds of the track, switch to the previous track and recalculate the absolute seek position
seek_queue_item = queue_item_prev(pb_session.playing_now->item_id);
if (seek_queue_item)
{
seek_ms = seek_queue_item->song_length + seek_ms;
// Make sure to not try to seek behind the previous track (this is also the case if song_length is zero)
seek_ms = (seek_ms < 0) ? 0 : seek_ms;
}
else
{
// There is no previous queue item, seek to the start of the current item
seek_ms = 0;
}
}
else
{
// We are more than 3 seconds into the playing track, seek to beginning of current track
seek_ms = 0;
}
}
else if (seek_ms > 0 && seek_ms > pb_session.playing_now->len_ms)
{
// We are seeking beyond the current track, play the next track from the beginning
seek_queue_item = queue_item_next(pb_session.playing_now->item_id);
if (seek_queue_item)
{
seek_ms = 0;
}
else
{
// There is no next queue item, we will seek beyond the length of the current track which will result in stopping playback
DPRINTF(E_DBG, L_PLAYER, "Seeking beyond the last queue item (seek_ms=%d, seek_mode=%d)\n", seek_param->ms, seek_param->mode);
}
}
if (!seek_queue_item)
{
// Seeking in the current queue item
seek_queue_item = db_queue_fetch_byitemid(pb_session.playing_now->item_id);
if (!seek_queue_item)
{
DPRINTF(E_LOG, L_PLAYER, "Error fetching queue item for seek command (seek_ms=%d, seek_mode=%d)\n", seek_param->ms, seek_param->mode);
return -1;
}
}
DPRINTF(E_DBG, L_PLAYER, "Seek position for seek command (seek_ms=%d, seek_mode=%d) is: seek_ms=%d, queue item id=%d\n",
seek_param->ms, seek_param->mode, seek_ms, seek_queue_item->id);
*queue_item = seek_queue_item;
*position_ms = seek_ms;
return 0;
}
static enum command_state
playback_seek_bh(void *arg, int *retval)
{
struct player_seek_param *seek_param = arg;
struct db_queue_item *queue_item;
int position_ms;
int ret;
// outputs_flush() in playback_pause() may have a caused a failure callback
// from the output, which in streaming_cb() can cause pb_abort()
if (player_state == PLAY_STOPPED)
{
goto error;
}
ret = seek_calc_position_ms(&queue_item, &position_ms, seek_param);
if (ret < 0)
{
DPRINTF(E_LOG, L_PLAYER, "Error calculating new seek position\n");
goto error;
}
ret = pb_session_start(queue_item, position_ms);
free_queue_item(queue_item, 0);
if (ret < 0)
{
DPRINTF(E_LOG, L_PLAYER, "Error seeking to %d, aborting playback\n", position_ms);
goto error;
}
// Silent status change - playback_start() sends the real status update
player_state = PLAY_PAUSED;
*retval = 0;
return COMMAND_END;
error:
pb_abort();
*retval = -1;
return COMMAND_END;
}
static enum command_state
playback_pause_bh(void *arg, int *retval)
{
struct db_queue_item *queue_item;
int ret;
// outputs_flush() in playback_pause() may have a caused a failure callback
// from the output, which in streaming_cb() can cause pb_abort()
if (player_state == PLAY_STOPPED)
{
goto error;
}
queue_item = db_queue_fetch_byitemid(pb_session.playing_now->item_id);
if (!queue_item)
{
DPRINTF(E_DBG, L_PLAYER, "Error pausing source, queue item has disappeared\n");
goto error;
}
ret = pb_session_start(queue_item, pb_session.playing_now->pos_ms);
free_queue_item(queue_item, 0);
if (ret < 0)
{
DPRINTF(E_DBG, L_PLAYER, "Error pausing source, aborting playback\n");
goto error;
}
status_update(PLAY_PAUSED, LISTENER_PLAYER);
*retval = 0;
return COMMAND_END;
error:
pb_abort();
*retval = -1;
return COMMAND_END;
}
static enum command_state
playback_pause(void *arg, int *retval)
{
if (player_state == PLAY_STOPPED)
{
*retval = -1;
return COMMAND_END;
}
if (player_state == PLAY_PAUSED)
{
*retval = 0;
return COMMAND_END;
}
pb_session_pause();
*retval = outputs_flush(device_flush_cb);
outputs_metadata_purge();
// We're async if we need to flush devices
if (*retval > 0)
return COMMAND_PENDING; // async
// Otherwise, just run the bottom half
return COMMAND_END;
}
static enum command_state
playback_flush(void *arg, int *retval)
{
if (player_state == PLAY_STOPPED)
{
*retval = -1;
return COMMAND_END;
}
if (player_state == PLAY_PAUSED)
{
*retval = 0;
return COMMAND_END;
}
input_flush(NULL);
*retval = outputs_flush(device_flush_cb);
outputs_metadata_purge();
if (*retval > 0)
return COMMAND_PENDING; // async
// Otherwise we are done
return COMMAND_END;
}
static enum command_state
playback_seek(void *arg, int *retval)
{
// Only check if the current playing track is seekable, other checks will be done in playback_pause()
if (pb_session.playing_now && !pb_session.playing_now->is_seekable)
{
DPRINTF(E_WARN, L_PLAYER, "Failed to seek, track is not seekable\n");
*retval = -1;
return COMMAND_END;
}
return playback_pause(arg, retval);
}
static void
device_to_speaker_info(struct player_speaker_info *spk, struct output_device *device)
{
memset(spk, 0, sizeof(struct player_speaker_info));
spk->id = device->id;
spk->active_remote = (uint32_t)device->id;
strncpy(spk->name, device->name, sizeof(spk->name));
spk->name[sizeof(spk->name) - 1] = '\0';
strncpy(spk->output_type, device->type_name, sizeof(spk->output_type));
spk->output_type[sizeof(spk->output_type) - 1] = '\0';
spk->relvol = device->relvol;
spk->absvol = device->volume;
spk->selected = OUTPUTS_DEVICE_DISPLAY_SELECTED(device);
spk->has_password = device->has_password;
spk->has_video = device->has_video;
spk->requires_auth = device->requires_auth;
spk->needs_auth_key = (device->requires_auth && device->auth_key == NULL);
spk->prevent_playback = device->prevent_playback;
spk->busy = device->busy;
}
static enum command_state
speaker_enumerate(void *arg, int *retval)
{
struct spk_enum *spk_enum = arg;
struct output_device *device;
struct player_speaker_info spk;
for (device = outputs_list(); device; device = device->next)
{
device_to_speaker_info(&spk, device);
spk_enum->cb(&spk, spk_enum->arg);
}
*retval = 0;
return COMMAND_END;
}
static enum command_state
speaker_get_byid(void *arg, int *retval)
{
struct speaker_get_param *spk_param = arg;
struct output_device *device;
for (device = outputs_list(); device; device = device->next)
{
if ((device->advertised || device->selected)
&& device->id == spk_param->spk_id)
{
device_to_speaker_info(spk_param->spk_info, device);
*retval = 0;
return COMMAND_END;
}
}
// No output device found with matching id
*retval = -1;
return COMMAND_END;
}
static enum command_state
speaker_get_byactiveremote(void *arg, int *retval)
{
struct speaker_get_param *spk_param = arg;
struct output_device *device;
for (device = outputs_list(); device; device = device->next)
{
if ((uint32_t)device->id == spk_param->active_remote)
{
device_to_speaker_info(spk_param->spk_info, device);
*retval = 0;
return COMMAND_END;
}
}
// No output device found with matching id
*retval = -1;
return COMMAND_END;
}
static enum command_state
speaker_set(void *arg, int *retval)
{
struct speaker_set_param *speaker_set_param = arg;
struct output_device *device;
uint64_t *ids;
int max_volume;
int nspk;
int i;
*retval = -1;
ids = speaker_set_param->device_ids;
if (ids)
nspk = ids[0];
else
nspk = 0;
DPRINTF(E_DBG, L_PLAYER, "Speaker set: %d speakers\n", nspk);
// Save the current master volume before we start selecting/unselecting, as
// that will affect master volume. See comment in outputs_device_select() for
// why we want to provide a max_volume.
max_volume = (player_state != PLAY_STOPPED) ? outputs_volume_get() : -1;
for (device = outputs_list(); device; device = device->next)
{
for (i = 1; i <= nspk; i++)
{
if (ids[i] == device->id)
break;
}
if (i <= nspk)
outputs_device_select(device, max_volume);
else
outputs_device_deselect(device);
}
*retval = outputs_start(device_activate_cb, device_shutdown_cb, PLAYER_ONLY_PROBE);
if (*retval > 0)
return COMMAND_PENDING; // async
return COMMAND_END;
}
static enum command_state
speaker_enable(void *arg, int *retval)
{
uint64_t *id = arg;
struct output_device *device;
int max_volume;
*retval = -1;
device = outputs_device_get(*id);
if (!device)
return COMMAND_END;
DPRINTF(E_DBG, L_PLAYER, "Speaker enable: '%s' (id=%" PRIu64 ")\n", device->name, *id);
max_volume = (player_state != PLAY_STOPPED) ? outputs_volume_get() : -1;
outputs_device_select(device, max_volume);
*retval = outputs_device_start(device, device_activate_cb, PLAYER_ONLY_PROBE);
if (*retval > 0)
return COMMAND_PENDING; // async
return COMMAND_END;
}
static enum command_state
speaker_disable(void *arg, int *retval)
{
uint64_t *id = arg;
struct output_device *device;
*retval = -1;
device = outputs_device_get(*id);
if (!device)
return COMMAND_END;
DPRINTF(E_DBG, L_PLAYER, "Speaker disable: '%s' (id=%" PRIu64 ")\n", device->name, *id);
outputs_device_deselect(device);
*retval = outputs_device_stop(device, device_shutdown_cb);
if (*retval > 0)
return COMMAND_PENDING; // async
return COMMAND_END;
}
static enum command_state
speaker_generic_bh(void *arg, int *retval)
{
status_update(player_state, LISTENER_SPEAKER | LISTENER_VOLUME);
return COMMAND_END;
}
/*
* Airplay speakers can via DACP set the "busy" + "prevent-playback" properties,
* which we handle below. We try to do this like iTunes, except we need to
* unselect devices, since our clients don't understand the "grayed out" state:
*
* | Playing to 1 device | Playing to 2 devices
* device-prevent-playback=1 | Playback stops, device selected but grayed out | Playback stops on device, continues on other device, device selected but grayed out
* device-prevent-playback=0 | Playback does not resume, device not grayed | Playback resumes on device, device not grayed
* (device-busy does the same)
*
* device-prevent-playback=1 | (same) | (same)
* device-busy=1 | (no change) | (no change)
* device-prevent-playback=0 | Playback does not resume, device still grayed | Playback does not resume, device still grayed
* device-busy=0 | Playback does not resume, device not grayed | Playback resumes on device, device not grayed
* (same if vice versa, ie busy=1 first)
*
* Special cases:
* a) Denon Home 150: User deselects speaker, we send TEARDOWN, speaker then
* sends prevent-playback=1 and then shortly after prevent-play-playback=0.
* In this case we never want to resume playback.
*/
static enum command_state
speaker_prevent_playback_set(void *arg, int *retval)
{
struct speaker_attr_param *param = arg;
struct output_device *device;
device = outputs_device_get(param->spk_id);
if (!device)
return COMMAND_END;
DPRINTF(E_DBG, L_PLAYER, "Speaker prevent playback change %u -> %u: '%s' (id=%" PRIu64 ")\n",
device->prevent_playback, param->prevent_playback, device->name, device->id);
if (param->prevent_playback && device->state == OUTPUT_STATE_STOPPED)
*retval = -1; // Means we won't set device->prevent_playback below, so that special case a) will work
else if (param->prevent_playback)
*retval = outputs_device_stop(device, device_shutdown_cb);
else if (!device->busy && device->prevent_playback) // Only start if previously prevented
*retval = outputs_device_start(device, device_activate_cb, PLAYER_ONLY_PROBE);
else
*retval = 0;
if (*retval >= 0)
device->prevent_playback = param->prevent_playback;
if (*retval > 0)
return COMMAND_PENDING; // async
return COMMAND_END;
}
static enum command_state
speaker_prevent_playback_set_bh(void *arg, int *retval)
{
struct speaker_attr_param *param = arg;
if (player_state == PLAY_PLAYING && outputs_sessions_count() == 0)
{
DPRINTF(E_INFO, L_PLAYER, "Suspending playback, speaker (id=%" PRIu64 ") set 'busy' or 'prevent-playback' flag\n", param->spk_id);
pb_suspend(); // Don't want to use pb_abort here, since that may clear the queue
}
else
status_update(player_state, LISTENER_SPEAKER | LISTENER_VOLUME);
*retval = 0;
return COMMAND_END;
}
static enum command_state
speaker_busy_set(void *arg, int *retval)
{
struct speaker_attr_param *param = arg;
struct output_device *device;
device = outputs_device_get(param->spk_id);
if (!device)
return COMMAND_END;
DPRINTF(E_DBG, L_PLAYER, "Speaker busy change %u -> %u: '%s' (id=%" PRIu64 ")\n",
device->busy, param->busy, device->name, device->id);
if (param->busy && device->state == OUTPUT_STATE_STOPPED)
*retval = -1; // Means we won't set device->busy below, so that special case a) will work
else if (param->busy)
*retval = outputs_device_stop(device, device_shutdown_cb);
else if (!device->prevent_playback && device->busy) // Only start if previously busy
*retval = outputs_device_start(device, device_activate_cb, PLAYER_ONLY_PROBE);
else
*retval = 0;
if (*retval >= 0)
device->busy = param->busy;
if (*retval > 0)
return COMMAND_PENDING; // async
return COMMAND_END;
}
// Attempts to reactivate a speaker that has failed. That includes restarting
// playback if it was stopped.
static enum command_state
speaker_resurrect(void *arg, int *retval)
{
struct speaker_set_param *param = arg;
struct output_device *device;
*retval = -1;
device = outputs_device_get(*param->device_ids);
if (!device)
goto out;
DPRINTF(E_DBG, L_PLAYER, "Speaker resurrect: '%s' (id=%" PRIu64 ")\n", device->name, device->id);
if (device->busy || device->prevent_playback)
goto out;
if (player_state == PLAY_PAUSED)
{
// Playback was suspended by device_streaming_cb() because the speaker was
// the only one playing. In that case we need to first resume the source,
// then wait for the speaker to reactivate, and then run bottom half.
*retval = pb_resume();
if (*retval < 0)
goto out;
}
else if (player_state == PLAY_STOPPED)
{
// If PLAY_STOPPED there is nothing to do, we can't resurrect since the
// source is gone
goto out;
}
*retval = outputs_device_start(device, device_activate_cb, false);
if (*retval > 0)
return COMMAND_PENDING; // Wait for speaker
out:
return COMMAND_END;
}
static enum command_state
speaker_resurrect_bh(void *arg, int *retval)
{
// Playback was suspended by device_streaming_cb. We resumed the input in the
// top half, now we have to start the playback timer and update status
if (player_state == PLAY_PAUSED)
return playback_start_bh(arg, retval);
status_update(player_state, LISTENER_SPEAKER | LISTENER_VOLUME);
*retval = 0;
return COMMAND_END;
}
static enum command_state
speaker_authorize(void *arg, int *retval)
{
struct speaker_attr_param *param = arg;
struct output_device *device;
device = outputs_device_get(param->spk_id);
if (!device)
return COMMAND_END;
*retval = outputs_device_authorize(device, param->pin, device_activate_cb);
if (*retval > 0)
return COMMAND_PENDING; // async
return COMMAND_END;
}
static enum command_state
speaker_start_all(void *arg, int *retval)
{
outputs_stop_delayed_cancel();
*retval = outputs_start(device_activate_cb, device_shutdown_cb, false);
if (*retval > 0)
return COMMAND_PENDING; // async
// Otherwise we are done
return COMMAND_END;
}
// This is borderline misuse of the outputs_device interface, but the purpose is
// to register streaming session info with outputs/streaming.c via the player
// thread. It must be the player thread because session setup requires that
// outputs_quality_subscribe() is called, and by design it isn't thread safe.
static enum command_state
streaming_register(void *arg, int *retval)
{
struct speaker_attr_param *param = arg;
struct output_device device =
{
.type = OUTPUT_TYPE_STREAMING,
.type_name = "streaming",
.name = "streaming",
.quality = param->quality,
.format = param->format,
};
*retval = outputs_device_start(&device, NULL, false);
param->spk_id = device.id;
param->audio_fd = device.audio_fd;
param->metadata_fd = device.metadata_fd;
return COMMAND_END;
}
static enum command_state
streaming_deregister(void *arg, int *retval)
{
struct speaker_attr_param *param = arg;
struct output_device device =
{
.type = OUTPUT_TYPE_STREAMING,
.type_name = "streaming",
.name = "streaming",
.id = param->spk_id,
.session = "dummy", // to pass check in outputs_device_stop()
};
*retval = outputs_device_stop(&device, NULL);
return COMMAND_END;
}
static enum command_state
volume_set(void *arg, int *retval)
{
union player_arg *cmdarg = arg;
int volume;
volume = cmdarg->intval;
*retval = outputs_volume_set(volume, device_volume_cb);
if (*retval > 0)
return COMMAND_PENDING; // async
return COMMAND_END;
}
static enum command_state
volume_setrel_speaker(void *arg, int *retval)
{
struct speaker_attr_param *vol_param = arg;
struct output_device *device;
device = outputs_device_get(vol_param->spk_id);
if (!device)
{
DPRINTF(E_WARN, L_PLAYER, "Could not set volume for speaker id %" PRIu64 ", speaker disappeared\n", vol_param->spk_id);
*retval = -1;
return COMMAND_END;
}
outputs_device_volume_register(device, -1, vol_param->volume);
*retval = outputs_device_volume_set(device, device_volume_cb);
if (*retval > 0)
return COMMAND_PENDING; // async
return COMMAND_END;
}
static enum command_state
volume_setabs_speaker(void *arg, int *retval)
{
struct speaker_attr_param *vol_param = arg;
struct output_device *device;
device = outputs_device_get(vol_param->spk_id);
if (!device)
{
DPRINTF(E_WARN, L_PLAYER, "Could not set volume for speaker id %" PRIu64 ", speaker disappeared\n", vol_param->spk_id);
*retval = -1;
return COMMAND_END;
}
outputs_device_volume_register(device, vol_param->volume, -1);
*retval = outputs_device_volume_set(device, device_volume_cb);
if (*retval > 0)
return COMMAND_PENDING; // async
return COMMAND_END;
}
static enum command_state
volume_setraw_speaker(void *arg, int *retval)
{
struct speaker_attr_param *vol_param = arg;
struct output_device *device;
int volume;
device = outputs_device_get(vol_param->spk_id);
if (!device)
{
DPRINTF(E_WARN, L_PLAYER, "Could not set volume for speaker id %" PRIu64 ", speaker disappeared\n", vol_param->spk_id);
*retval = -1;
return COMMAND_END;
}
volume = outputs_device_volume_to_pct(device, vol_param->volstr); // Only converts
if (volume < 0)
{
DPRINTF(E_LOG, L_PLAYER, "Could not parse volume '%s' in update_volume() for speaker '%s'\n", vol_param->volstr, device->name);
*retval = -1;
return COMMAND_END;
}
outputs_device_volume_register(device, volume, -1);
*retval = outputs_device_volume_set(device, device_volume_cb);
if (*retval > 0)
return COMMAND_PENDING; // async
return COMMAND_END;
}
static enum command_state
volume_generic_bh(void *arg, int *retval)
{
status_update(player_state, LISTENER_VOLUME);
return COMMAND_END;
}
static enum command_state
consume_set(void *arg, int *retval);
static enum command_state
repeat_set(void *arg, int *retval)
{
enum repeat_mode *mode = arg;
union player_arg consume_arg;
if (*mode == repeat)
{
*retval = 0;
return COMMAND_END;
}
switch (*mode)
{
case REPEAT_OFF:
case REPEAT_SONG:
case REPEAT_ALL:
repeat = *mode;
break;
default:
DPRINTF(E_LOG, L_PLAYER, "Invalid repeat mode: %d\n", *mode);
*retval = -1;
return COMMAND_END;
}
// Persist
SETTINGS_SETINT(player_settings_category, PLAYER_SETTINGS_MODE_REPEAT, repeat);
if (repeat == REPEAT_ALL || repeat == REPEAT_SONG)
{
// Activating repeat requires repeat consume mode to be off
consume_arg.intval = 0;
consume_set(&consume_arg, retval);
}
*retval = 0;
return COMMAND_END;
}
static enum command_state
shuffle_set(void *arg, int *retval)
{
union player_arg *cmdarg = arg;
char new_shuffle;
new_shuffle = (cmdarg->intval == 0) ? 0 : 1;
// Ignore unchanged shuffle mode requests
if (new_shuffle == shuffle)
goto out;
// Update queue and notify listeners
if (new_shuffle)
{
if (pb_session.playing_now)
db_queue_reshuffle(pb_session.playing_now->item_id);
else
db_queue_reshuffle(0);
}
else
{
db_queue_inc_version();
}
// Update shuffle mode
shuffle = new_shuffle;
// Persist
SETTINGS_SETBOOL(player_settings_category, PLAYER_SETTINGS_MODE_SHUFFLE, shuffle);
out:
*retval = 0;
return COMMAND_END;
}
static enum command_state
consume_set(void *arg, int *retval)
{
enum repeat_mode repeat_mode;
union player_arg *cmdarg = arg;
consume = cmdarg->intval;
// Persist
SETTINGS_SETBOOL(player_settings_category, PLAYER_SETTINGS_MODE_CONSUME, consume);
if (consume)
{
// Activating cosume mode requires repeat mode to be off
repeat_mode = REPEAT_OFF;
repeat_set(&repeat_mode, retval);
}
*retval = 0;
return COMMAND_END;
}
static enum command_state
options_generic_bh(void *arg, int *retval)
{
status_update(player_state, LISTENER_OPTIONS);
return COMMAND_END;
}
/*
* Removes all items from the history
*/
static enum command_state
playerqueue_clear_history(void *arg, int *retval)
{
memset(history, 0, sizeof(struct player_history));
cur_plversion++; // TODO [db_queue] need to update db queue version
*retval = 0;
return COMMAND_END;
}
static enum command_state
playerqueue_plid(void *arg, int *retval)
{
union player_arg *cmdarg = arg;
cur_plid = cmdarg->id;
*retval = 0;
return COMMAND_END;
}
static enum command_state
playerqueue_generic_bh(void *arg, int *retval)
{
status_update(player_state, LISTENER_QUEUE);
return COMMAND_END;
}
/* ------------------------------- Player API ------------------------------- */
int
player_get_status(struct player_status *status)
{
int ret;
ret = commands_exec_sync(cmdbase, get_status, NULL, status);
return ret;
}
/* ------------------------------ Thread: httpd ----------------------------- */
/*
* Stores the now playing media item dbmfi-id in the given id pointer.
*
* @param id Pointer will hold the playing item (dbmfi) id if the function returns 0
* @return 0 on success, -1 on failure (e. g. no playing item found)
*/
int
player_playing_now(uint32_t *id)
{
int ret;
ret = commands_exec_sync(cmdbase, playing_now, NULL, id);
return ret;
}
/*
* Starts/resumes playback
*
* Depending on the player state, this will either resume playing the current
* item (player is paused) or begin playing the queue from the beginning.
*
* If shuffle is set, the queue is reshuffled prior to starting playback.
*
* @return 0 if successful, -1 if an error occurred
*/
int
player_playback_start(void)
{
int ret;
ret = commands_exec_sync(cmdbase, playback_start, playback_start_bh, NULL);
return ret;
}
/*
* Starts/resumes playback of the given queue_item
*
* If shuffle is set, the queue is reshuffled prior to starting playback.
*
* If a pointer is given as argument "itemid", its value will be set to the playing item id.
*
* @param queue_item to start playing
* @return 0 if successful, -1 if an error occurred
*/
int
player_playback_start_byitem(struct db_queue_item *queue_item)
{
int ret;
ret = commands_exec_sync(cmdbase, playback_start_item, playback_start_bh, queue_item);
return ret;
}
int
player_playback_start_byid(uint32_t id)
{
union player_arg cmdarg;
int ret;
cmdarg.id = id;
ret = commands_exec_sync(cmdbase, playback_start_id, playback_start_bh, &cmdarg);
return ret;
}
int
player_playback_stop(void)
{
int ret;
ret = commands_exec_sync(cmdbase, playback_stop, NULL, NULL);
return ret;
}
int
player_playback_abort(void)
{
int ret;
ret = commands_exec_sync(cmdbase, playback_abort, NULL, NULL);
return ret;
}
int
player_playback_pause(void)
{
int ret;
ret = commands_exec_sync(cmdbase, playback_pause, playback_pause_bh, NULL);
return ret;
}
/**
* Flushes outputs and input buffer, but does not stop the input read loop. Used
* by the pipe input when a track change is registered. Flushing outputs will
* stop them, so the command is two-step, i.e. it starts them again.
*
* @return Returns 0 on success and a negative value on error
*/
int
player_playback_flush(void)
{
int ret;
ret = commands_exec_sync(cmdbase, playback_flush, NULL, NULL);
if (ret < 0)
return ret;
ret = commands_exec_sync(cmdbase, speaker_start_all, NULL, NULL);
return ret;
}
/**
* Seeks to the position "seek_ms", depending on the given "seek_mode" seek_ms is
* either the new position in the current track (seek_mode == PLAYER_SEEK_POSITION)
* or a relative amount of milliseconds from the current playing position
* (seek_mode == PLAYER_SEEK_RELATIVE).
*
* Relative seeking switches tracks, if:
* - seeking behind the the current track and current playing position is not more than 3 seconds
* - seeking beyond the current track
*
* @param seek_ms Position or relative amount of milliseconds to seek to
* @param seek_mode If PLAYER_SEEK_POSITION seek_ms is a position in milliseconds,
* if PLAYER_SEEK_RELATIVE seek_ms is the relative amount of milliseconds
* @return Returns 0 on success and a negative value on error
*/
int
player_playback_seek(int seek_ms, enum player_seek_mode seek_mode)
{
struct player_seek_param seek_param;
int ret;
seek_param.ms = seek_ms;
seek_param.mode = seek_mode;
ret = commands_exec_sync(cmdbase, playback_seek, playback_seek_bh, &seek_param);
return ret;
}
int
player_playback_next(void)
{
int ret;
ret = commands_exec_sync(cmdbase, playback_pause, playback_next_bh, NULL);
return ret;
}
int
player_playback_prev(void)
{
int ret;
ret = commands_exec_sync(cmdbase, playback_pause, playback_prev_bh, NULL);
return ret;
}
void
player_speaker_enumerate(spk_enum_cb cb, void *arg)
{
struct spk_enum spk_enum;
spk_enum.cb = cb;
spk_enum.arg = arg;
commands_exec_sync(cmdbase, speaker_enumerate, NULL, &spk_enum);
}
int
player_speaker_set(uint64_t *ids)
{
struct speaker_set_param speaker_set_param;
int ret;
speaker_set_param.device_ids = ids;
ret = commands_exec_sync(cmdbase, speaker_set, speaker_generic_bh, &speaker_set_param);
return ret;
}
int
player_speaker_get_byid(struct player_speaker_info *spk, uint64_t id)
{
struct speaker_get_param param;
int ret;
param.spk_id = id;
param.spk_info = spk;
ret = commands_exec_sync(cmdbase, speaker_get_byid, NULL, &param);
return ret;
}
int
player_speaker_get_byactiveremote(struct player_speaker_info *spk, uint32_t active_remote)
{
struct speaker_get_param param;
int ret;
param.active_remote = active_remote;
param.spk_info = spk;
ret = commands_exec_sync(cmdbase, speaker_get_byactiveremote, NULL, &param);
return ret;
}
int
player_speaker_enable(uint64_t id)
{
int ret;
ret = commands_exec_sync(cmdbase, speaker_enable, speaker_generic_bh, &id);
return ret;
}
int
player_speaker_disable(uint64_t id)
{
int ret;
ret = commands_exec_sync(cmdbase, speaker_disable, speaker_generic_bh, &id);
return ret;
}
int
player_speaker_prevent_playback_set(uint64_t id, bool prevent_playback)
{
struct speaker_attr_param param;
int ret;
param.spk_id = id;
param.prevent_playback = prevent_playback;
ret = commands_exec_sync(cmdbase, speaker_prevent_playback_set, speaker_prevent_playback_set_bh, &param);
return ret;
}
int
player_speaker_busy_set(uint64_t id, bool busy)
{
struct speaker_attr_param param;
int ret;
param.spk_id = id;
param.busy = busy;
ret = commands_exec_sync(cmdbase, speaker_busy_set, speaker_prevent_playback_set_bh, &param);
return ret;
}
void
player_speaker_resurrect(void *arg)
{
struct speaker_set_param param;
param.device_ids = (uint64_t *)arg;
commands_exec_sync(cmdbase, speaker_resurrect, speaker_resurrect_bh, &param);
}
int
player_speaker_authorize(uint64_t id, const char *pin)
{
struct speaker_attr_param param;
int ret;
param.spk_id = id;
param.pin = pin;
ret = commands_exec_sync(cmdbase, speaker_authorize, speaker_generic_bh, &param);
return ret;
}
int
player_streaming_register(int *audio_fd, int *metadata_fd, enum player_format format, struct media_quality quality)
{
struct speaker_attr_param param;
int ret;
param.format = format;
param.quality = quality;
ret = commands_exec_sync(cmdbase, streaming_register, NULL, &param);
if (ret < 0)
return ret;
*audio_fd = param.audio_fd;
*metadata_fd = param.metadata_fd;
return param.spk_id;
}
int
player_streaming_deregister(int id)
{
struct speaker_attr_param param;
int ret;
param.spk_id = id;
ret = commands_exec_sync(cmdbase, streaming_deregister, NULL, &param);
return ret;
}
int
player_volume_set(int vol)
{
union player_arg cmdarg;
int ret;
if (vol < 0 || vol > 100)
{
DPRINTF(E_LOG, L_PLAYER, "Volume (%d) for player_volume_set is out of range\n", vol);
return -1;
}
cmdarg.intval = vol;
ret = commands_exec_sync(cmdbase, volume_set, volume_generic_bh, &cmdarg);
return ret;
}
int
player_volume_setrel_speaker(uint64_t id, int relvol)
{
struct speaker_attr_param vol_param;
int ret;
if (relvol < 0 || relvol > 100)
{
DPRINTF(E_LOG, L_PLAYER, "Volume (%d) for player_volume_setrel_speaker is out of range\n", relvol);
return -1;
}
vol_param.spk_id = id;
vol_param.volume = relvol;
ret = commands_exec_sync(cmdbase, volume_setrel_speaker, volume_generic_bh, &vol_param);
return ret;
}
int
player_volume_setabs_speaker(uint64_t id, int vol)
{
struct speaker_attr_param vol_param;
int ret;
if (vol < 0 || vol > 100)
{
DPRINTF(E_LOG, L_PLAYER, "Volume (%d) for player_volume_setabs_speaker is out of range\n", vol);
return -1;
}
vol_param.spk_id = id;
vol_param.volume = vol;
ret = commands_exec_sync(cmdbase, volume_setabs_speaker, volume_generic_bh, &vol_param);
return ret;
}
int
player_volume_setraw_speaker(uint64_t id, const char *volstr)
{
struct speaker_attr_param vol_param;
int ret;
vol_param.spk_id = id;
vol_param.volstr = volstr;
ret = commands_exec_sync(cmdbase, volume_setraw_speaker, volume_generic_bh, &vol_param);
return ret;
}
int
player_repeat_set(enum repeat_mode mode)
{
int ret;
ret = commands_exec_sync(cmdbase, repeat_set, options_generic_bh, &mode);
return ret;
}
int
player_shuffle_set(int enable)
{
union player_arg cmdarg;
int ret;
cmdarg.intval = enable;
ret = commands_exec_sync(cmdbase, shuffle_set, options_generic_bh, &cmdarg);
return ret;
}
int
player_consume_set(int enable)
{
union player_arg cmdarg;
int ret;
cmdarg.intval = enable;
ret = commands_exec_sync(cmdbase, consume_set, options_generic_bh, &cmdarg);
return ret;
}
void
player_queue_clear_history()
{
commands_exec_sync(cmdbase, playerqueue_clear_history, playerqueue_generic_bh, NULL);
}
void
player_queue_plid(uint32_t plid)
{
union player_arg cmdarg;
cmdarg.id = plid;
commands_exec_sync(cmdbase, playerqueue_plid, NULL, &cmdarg);
}
struct player_history *
player_history_get(void)
{
return history;
}
/* ------------------- Non-blocking commands used by mDNS ------------------- */
int
player_device_add(void *device)
{
union player_arg *cmdarg;
int ret;
cmdarg = calloc(1, sizeof(union player_arg));
if (!cmdarg)
{
DPRINTF(E_LOG, L_PLAYER, "Could not allocate player_command\n");
return -1;
}
cmdarg->device = device;
ret = commands_exec_async(cmdbase, device_add, cmdarg);
return ret;
}
int
player_device_remove(void *device)
{
union player_arg *cmdarg;
int ret;
cmdarg = calloc(1, sizeof(union player_arg));
if (!cmdarg)
{
DPRINTF(E_LOG, L_PLAYER, "Could not allocate player_command\n");
return -1;
}
cmdarg->device = device;
ret = commands_exec_async(cmdbase, device_remove_family, cmdarg);
return ret;
}
/* ----------------------- Thread: filescanner/httpd ------------------------ */
void
player_raop_verification_kickoff(char **arglist)
{
union player_arg *cmdarg;
cmdarg = calloc(1, sizeof(union player_arg));
if (!cmdarg)
{
DPRINTF(E_LOG, L_PLAYER, "Could not allocate player_command\n");
return;
}
cmdarg->auth.type = OUTPUT_TYPE_RAOP;
memcpy(cmdarg->auth.pin, arglist[0], 4);
commands_exec_async(cmdbase, device_auth_kickoff, cmdarg);
}
/* ---------------------------- Thread: player ------------------------------ */
static void *
player(void *arg)
{
struct output_device *device;
int ret;
ret = db_perthread_init();
if (ret < 0)
{
DPRINTF(E_LOG, L_PLAYER, "Error: DB init failed\n");
pthread_exit(NULL);
}
event_base_dispatch(evbase_player);
if (!player_exit)
DPRINTF(E_LOG, L_PLAYER, "Player event loop terminated ahead of time!\n");
for (device = outputs_list(); device; device = device->next)
{
ret = db_speaker_save(device);
if (ret < 0)
DPRINTF(E_LOG, L_PLAYER, "Could not save state for %s device '%s'\n", device->type_name, device->name);
}
db_perthread_deinit();
pthread_exit(NULL);
}
/* ----------------------------- Thread: main ------------------------------- */
int
player_init(void)
{
uint64_t interval;
int ret;
speaker_autoselect = cfg_getbool(cfg_getsec(cfg, "general"), "speaker_autoselect");
clear_queue_on_stop_disabled = cfg_getbool(cfg_getsec(cfg, "library"), "clear_queue_on_stop_disable");
/* Handle deprecated config options, note that this is also in library.c */
if (0 < cfg_opt_size(cfg_getopt(cfg_getsec(cfg, "mpd"), "clear_queue_on_stop_disable")))
{
clear_queue_on_stop_disabled = cfg_getbool(cfg_getsec(cfg, "mpd"), "clear_queue_on_stop_disable");
}
CHECK_NULL(L_PLAYER, player_settings_category = settings_category_get("player"));
ret = SETTINGS_GETINT(player_settings_category, PLAYER_SETTINGS_MODE_REPEAT);
repeat = (ret > 0) ? ret : REPEAT_OFF;
shuffle = SETTINGS_GETBOOL(player_settings_category, PLAYER_SETTINGS_MODE_SHUFFLE);
consume = SETTINGS_GETBOOL(player_settings_category, PLAYER_SETTINGS_MODE_CONSUME);
player_state = PLAY_STOPPED;
CHECK_NULL(L_PLAYER, history = calloc(1, sizeof(struct player_history)));
// Determine if the resolution of the system timer is > or < the size
// of an audio packet. NOTE: this assumes the system clock resolution
// is less than one second.
if (clock_getres(CLOCK_MONOTONIC, &player_timer_res) < 0)
{
DPRINTF(E_LOG, L_PLAYER, "Could not get the system timer resolution.\n");
goto error_history_free;
}
if (!cfg_getbool(cfg_getsec(cfg, "general"), "high_resolution_clock"))
{
DPRINTF(E_INFO, L_PLAYER, "High resolution clock not enabled on this system (res is %ld)\n", player_timer_res.tv_nsec);
player_timer_res.tv_nsec = 10 * PLAYER_TICK_INTERVAL * 1000000;
}
// Set the tick interval for the playback timer
interval = MAX(player_timer_res.tv_nsec, PLAYER_TICK_INTERVAL * 1000000);
player_tick_interval.tv_nsec = interval;
pb_write_deficit_max = (PLAYER_WRITE_BEHIND_MAX * 1000000 / interval);
// Create the playback timer
#ifdef HAVE_TIMERFD
pb_timer_fd = timerfd_create(CLOCK_MONOTONIC, TFD_CLOEXEC | TFD_NONBLOCK);
ret = pb_timer_fd;
#else
ret = timer_create(CLOCK_MONOTONIC, NULL, &pb_timer);
#endif
if (ret < 0)
{
DPRINTF(E_LOG, L_PLAYER, "Could not create playback timer: %s\n", strerror(errno));
goto error_history_free;
}
CHECK_NULL(L_PLAYER, evbase_player = event_base_new());
#ifdef HAVE_TIMERFD
CHECK_NULL(L_PLAYER, pb_timer_ev = event_new(evbase_player, pb_timer_fd, EV_READ | EV_PERSIST, playback_cb, NULL));
#else
CHECK_NULL(L_PLAYER, pb_timer_ev = event_new(evbase_player, SIGALRM, EV_SIGNAL | EV_PERSIST, playback_cb, NULL));
#endif
CHECK_NULL(L_PLAYER, cmdbase = commands_base_new(evbase_player, NULL));
ret = outputs_init();
if (ret < 0)
{
DPRINTF(E_FATAL, L_PLAYER, "Output initiation failed\n");
goto error_evbase_free;
}
ret = input_init();
if (ret < 0)
{
DPRINTF(E_FATAL, L_PLAYER, "Input initiation failed\n");
goto error_outputs_deinit;
}
ret = pthread_create(&tid_player, NULL, player, NULL);
if (ret < 0)
{
DPRINTF(E_FATAL, L_PLAYER, "Could not spawn player thread: %s\n", strerror(errno));
goto error_input_deinit;
}
thread_setname(tid_player, "player");
return 0;
error_input_deinit:
input_deinit();
error_outputs_deinit:
outputs_deinit();
error_evbase_free:
commands_base_free(cmdbase);
event_free(pb_timer_ev);
event_base_free(evbase_player);
#ifdef HAVE_TIMERFD
close(pb_timer_fd);
#else
timer_delete(pb_timer);
#endif
error_history_free:
free(history);
return -1;
}
void
player_deinit(void)
{
int ret;
player_playback_abort();
#ifdef HAVE_TIMERFD
close(pb_timer_fd);
#else
timer_delete(pb_timer);
#endif
input_deinit();
outputs_deinit();
player_exit = 1;
commands_base_destroy(cmdbase);
ret = pthread_join(tid_player, NULL);
if (ret != 0)
{
DPRINTF(E_LOG, L_PLAYER, "Could not join player thread: %s\n", strerror(errno));
return;
}
free(history);
event_free(pb_timer_ev);
event_base_free(evbase_player);
}