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owntone-server/src/player.c
ejurgensen b71b32438b [player] Don't log single tick overruns
2017-07-23 16:58:18 +02:00

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/*
* Copyright (C) 2010-2011 Julien BLACHE <jb@jblache.org>
* Copyright (C) 2016-2017 Espen Jürgensen <espenjurgensen@gmail.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
* 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 (partly 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 forked-daapd
* 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.
*
*
* About metadata
* --------------
* The player gets metadata from library + inputs and passes it to the outputs
* and other clients (e.g. Remotes).
*
* 1. On playback start, metadata from the library is loaded into the queue
* items, and these items are then the source of metadata for clients.
* 2. During playback, the input may signal new metadata by making a
* input_write() with the INPUT_FLAG_METADATA flag. When the player read
* reaches that data, the player will request the metadata from the input
* with input_metadata_get(). This metadata is then saved to the currently
* playing queue item, and the clients are told to update metadata.
* 3. Artwork works differently than textual metadata. The artwork module will
* look for artwork in the library, and addition also check the artwork_url
* of the queue_item.
*/
#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_PTHREAD_NP_H
# include <pthread_np.h>
#endif
#ifdef HAVE_TIMERFD
# include <sys/timerfd.h>
#elif defined(__FreeBSD__) || defined(__FreeBSD_kernel__)
# 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 "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
#ifndef MIN
# define MIN(a, b) ((a < b) ? a : b)
#endif
#ifndef MAX
#define MAX(a, b) ((a > b) ? a : b)
#endif
// Default volume (must be from 0 - 100)
#define PLAYER_DEFAULT_VOLUME 50
// For every tick_interval, we will read a packet 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
struct volume_param {
int volume;
uint64_t spk_id;
};
struct spk_enum
{
spk_enum_cb cb;
void *arg;
};
struct speaker_set_param
{
uint64_t *device_ids;
int intval;
};
struct metadata_param
{
struct input_metadata *input;
struct output_metadata *output;
};
struct speaker_auth_param
{
enum output_types type;
char pin[5];
};
union player_arg
{
struct volume_param vol_param;
void *noarg;
struct spk_enum *spk_enum;
struct output_device *device;
struct player_status *status;
struct player_source *ps;
struct metadata_param metadata_param;
uint32_t *id_ptr;
struct speaker_set_param speaker_set_param;
enum repeat_mode mode;
struct speaker_auth_param auth;
uint32_t id;
int intval;
};
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
static int speaker_autoselect;
static int clear_queue_on_stop_disabled;
// 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;
static struct timespec pb_timer_last;
static struct timespec packet_timer_last;
// How often the playback timer triggers playback_cb()
static struct timespec tick_interval;
// Timer resolution
static struct timespec timer_res;
// Time between two packets
static struct timespec packet_time = { 0, AIRTUNES_V2_STREAM_PERIOD };
// How many writes we owe the output (when the input is underrunning)
static int pb_read_deficit;
// PLAYER_READ_BEHIND_MAX and PLAYER_WRITE_BEHIND_MAX converted to clock ticks
static int pb_read_deficit_max;
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;
// Sync values
static struct timespec pb_pos_stamp;
static uint64_t pb_pos;
// Stream position (packets)
static uint64_t last_rtptime;
// Output devices
static struct output_device *dev_list;
// Output status
static int output_sessions;
// Last commanded volume
static int master_volume;
// Audio source
static struct player_source *cur_playing;
static struct player_source *cur_streaming;
static uint32_t cur_plid;
static uint32_t cur_plversion;
// Player buffer (holds one packet)
static uint8_t pb_buffer[STOB(AIRTUNES_V2_PACKET_SAMPLES)];
static size_t pb_buffer_offset;
// Play history
static struct player_history *history;
/* -------------------------------- Forwards -------------------------------- */
static void
playback_abort(void);
static void
playback_suspend(void);
/* ----------------------------- Volume helpers ----------------------------- */
static int
rel_to_vol(int relvol)
{
float vol;
if (relvol == 100)
return master_volume;
vol = ((float)relvol * (float)master_volume) / 100.0;
return (int)vol;
}
static int
vol_to_rel(int volume)
{
float rel;
if (volume == master_volume)
return 100;
rel = ((float)volume / (float)master_volume) * 100.0;
return (int)rel;
}
// Master volume helpers
static void
volume_master_update(int newvol)
{
struct output_device *device;
master_volume = newvol;
for (device = dev_list; device; device = device->next)
{
if (device->selected)
device->relvol = vol_to_rel(device->volume);
}
}
static void
volume_master_find(void)
{
struct output_device *device;
int newmaster;
newmaster = -1;
for (device = dev_list; device; device = device->next)
{
if (device->selected && (device->volume > newmaster))
newmaster = device->volume;
}
volume_master_update(newmaster);
}
/* ---------------------- Device select/deselect hooks ---------------------- */
static void
speaker_select_output(struct output_device *device)
{
device->selected = 1;
if (device->volume > master_volume)
{
if (player_state == PLAY_STOPPED || master_volume == -1)
volume_master_update(device->volume);
else
device->volume = master_volume;
}
device->relvol = vol_to_rel(device->volume);
}
static void
speaker_deselect_output(struct output_device *device)
{
device->selected = 0;
if (device->volume == master_volume)
volume_master_find();
}
/* ----------------------- 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);
}
#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
// Callback from the worker thread. Here the heavy lifting is done: updating the
// db_queue_item, retrieving artwork (through outputs_metadata_prepare) and
// when done, telling the player to send the metadata to the clients
static void
metadata_update_cb(void *arg)
{
struct input_metadata *metadata = arg;
struct output_metadata *o_metadata;
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! Input metadata item_id does not match anything in queue\n");
goto out_free_metadata;
}
// 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->song_length)
queue_item->song_length = metadata->song_length;
ret = db_queue_update_item(queue_item);
if (ret < 0)
{
DPRINTF(E_LOG, L_PLAYER, "Database error while updating queue with new metadata\n");
goto out_free_queueitem;
}
o_metadata = outputs_metadata_prepare(metadata->item_id);
// Actual sending must be done by player, since the worker does not own the outputs
player_metadata_send(metadata, o_metadata);
outputs_metadata_free(o_metadata);
out_free_queueitem:
free_queue_item(queue_item, 0);
out_free_metadata:
input_metadata_free(metadata, 1);
}
// Gets the metadata, but since the actual update requires db writes and
// possibly retrieving artwork we let the worker do the next step
static void
metadata_trigger(int startup)
{
struct input_metadata metadata;
int ret;
ret = input_metadata_get(&metadata, cur_streaming, startup, last_rtptime + AIRTUNES_V2_PACKET_SAMPLES);
if (ret < 0)
return;
worker_execute(metadata_update_cb, &metadata, sizeof(metadata), 0);
}
/*
* 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)
{
int seek;
if (!cur_streaming)
return;
if (cur_streaming->media_kind & (MEDIA_KIND_MOVIE | MEDIA_KIND_PODCAST | MEDIA_KIND_AUDIOBOOK | MEDIA_KIND_TVSHOW))
{
seek = (cur_streaming->output_start - cur_streaming->stream_start) / 44100 * 1000;
db_file_seek_update(cur_streaming->id, seek);
}
}
static void
status_update(enum play_status status)
{
player_state = status;
listener_notify(LISTENER_PLAYER);
}
/* ----------- Audio source handling (interfaces with input module) --------- */
static struct player_source *
source_now_playing()
{
if (cur_playing)
return cur_playing;
return cur_streaming;
}
/*
* Creates a new player source for the given queue item
*/
static struct player_source *
source_new(struct db_queue_item *queue_item)
{
struct player_source *ps;
ps = calloc(1, sizeof(struct player_source));
if (!ps)
{
DPRINTF(E_LOG, L_PLAYER, "Out of memory (ps)\n");
return NULL;
}
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->play_next = NULL;
ps->path = strdup(queue_item->path);
return ps;
}
static void
source_free(struct player_source *ps)
{
if (ps->path)
free(ps->path);
free(ps);
}
/*
* Stops playback for the current streaming source and frees all
* player sources (starting from the playing source). Sets current streaming
* and playing sources to NULL.
*/
static void
source_stop()
{
struct player_source *ps_playing;
struct player_source *ps_temp;
if (cur_streaming)
input_stop(cur_streaming);
ps_playing = source_now_playing();
while (ps_playing)
{
ps_temp = ps_playing;
ps_playing = ps_playing->play_next;
ps_temp->play_next = NULL;
source_free(ps_temp);
}
cur_playing = NULL;
cur_streaming = NULL;
}
/*
* Pauses playback
*
* Resets the streaming source to the playing source and adjusts stream-start
* and output-start values to the playing time. Sets the current streaming
* source to NULL.
*/
static int
source_pause(uint64_t pos)
{
struct player_source *ps_playing;
struct player_source *ps_playnext;
struct player_source *ps_temp;
uint64_t seek_frames;
int seek_ms;
int ret;
ps_playing = source_now_playing();
if (!ps_playing)
return -1;
if (cur_streaming && (cur_streaming == ps_playing))
{
if (ps_playing != cur_streaming)
{
DPRINTF(E_DBG, L_PLAYER,
"Pause called on playing source (id=%d) and streaming source already "
"switched to the next item (id=%d)\n", ps_playing->id, cur_streaming->id);
ret = input_stop(cur_streaming);
if (ret < 0)
return -1;
}
else
{
ret = input_pause(cur_streaming);
if (ret < 0)
return -1;
}
}
ps_playnext = ps_playing->play_next;
while (ps_playnext)
{
ps_temp = ps_playnext;
ps_playnext = ps_playnext->play_next;
ps_temp->play_next = NULL;
source_free(ps_temp);
}
ps_playing->play_next = NULL;
cur_playing = NULL;
cur_streaming = ps_playing;
if (!cur_streaming->setup_done)
{
DPRINTF(E_INFO, L_PLAYER, "Opening '%s'\n", cur_streaming->path);
ret = input_setup(cur_streaming);
if (ret < 0)
{
DPRINTF(E_LOG, L_PLAYER, "Failed to open '%s'\n", cur_streaming->path);
return -1;
}
}
// Seek back to the pause position
seek_frames = (pos - cur_streaming->stream_start);
seek_ms = (int)((seek_frames * 1000) / 44100);
ret = input_seek(cur_streaming, seek_ms);
// TODO what if ret < 0?
// Adjust start_pos to take into account the pause and seek back
cur_streaming->stream_start = last_rtptime + AIRTUNES_V2_PACKET_SAMPLES - ((uint64_t)ret * 44100) / 1000;
cur_streaming->output_start = last_rtptime + AIRTUNES_V2_PACKET_SAMPLES;
cur_streaming->end = 0;
return 0;
}
/*
* Seeks the current streaming source to the given postion in milliseconds
* and adjusts stream-start and output-start values.
*
* @param seek_ms Position in milliseconds to seek
* @return The new position in milliseconds or -1 on error
*/
static int
source_seek(int seek_ms)
{
int ret;
ret = input_seek(cur_streaming, seek_ms);
if (ret < 0)
return -1;
// Adjust start_pos to take into account the pause and seek back
cur_streaming->stream_start = last_rtptime + AIRTUNES_V2_PACKET_SAMPLES - ((uint64_t)ret * 44100) / 1000;
cur_streaming->output_start = last_rtptime + AIRTUNES_V2_PACKET_SAMPLES;
return ret;
}
/*
* Starts or resumes playback
*/
static int
source_play()
{
int ret;
ret = input_start(cur_streaming);
return ret;
}
/*
* Opens the given player source for playback (but does not start playback)
*
* The given source is appended to the current streaming source (if one exists) and
* becomes the new current streaming source.
*
* Stream-start and output-start values are set to the given start position.
*/
static int
source_open(struct player_source *ps, uint64_t start_pos, int seek_ms)
{
int ret;
DPRINTF(E_INFO, L_PLAYER, "Opening '%s' (id=%d, item-id=%d)\n", ps->path, ps->id, ps->item_id);
if (cur_streaming && cur_streaming->end == 0)
{
DPRINTF(E_LOG, L_PLAYER, "Current streaming source not at eof '%s' (id=%d, item-id=%d)\n",
cur_streaming->path, cur_streaming->id, cur_streaming->item_id);
return -1;
}
ret = input_setup(ps);
if (ret < 0)
{
DPRINTF(E_LOG, L_PLAYER, "Failed to open '%s' (id=%d, item-id=%d)\n", ps->path, ps->id, ps->item_id);
return -1;
}
// If a streaming source exists, append the new source as play-next and set it
// as the new streaming source
if (cur_streaming)
cur_streaming->play_next = ps;
cur_streaming = ps;
cur_streaming->stream_start = start_pos;
cur_streaming->output_start = cur_streaming->stream_start;
cur_streaming->end = 0;
// Seek to the given seek position
if (seek_ms)
{
DPRINTF(E_INFO, L_PLAYER, "Seek to %d ms for '%s' (id=%d, item-id=%d)\n", seek_ms, ps->path, ps->id, ps->item_id);
source_seek(seek_ms);
}
return ret;
}
/*
* Closes the current streaming source and sets its end-time to the given
* position
*/
static int
source_close(uint64_t end_pos)
{
input_stop(cur_streaming);
cur_streaming->end = end_pos;
return 0;
}
/*
* Updates the now playing item (cur_playing) and notifies remotes and raop devices
* about changes. Also takes care of stopping playback after the last item.
*
* @return Returns the current playback position as rtp-time
*/
static uint64_t
source_check(void)
{
struct timespec ts;
struct player_source *ps;
uint64_t pos;
int i;
int id;
int ret;
ret = player_get_current_pos(&pos, &ts, 0);
if (ret < 0)
{
DPRINTF(E_LOG, L_PLAYER, "Couldn't get current playback position\n");
return 0;
}
if (player_state == PLAY_STOPPED)
{
DPRINTF(E_LOG, L_PLAYER, "Bug! source_check called but playback has already stopped\n");
return pos;
}
// If cur_playing is NULL, we are still in the first two seconds after starting the stream
if (!cur_playing)
{
if (pos >= cur_streaming->output_start)
{
cur_playing = cur_streaming;
status_update(PLAY_PLAYING);
// Start of streaming, no metadata to prune yet
}
return pos;
}
// Check if we are still in the middle of the current playing song
if ((cur_playing->end == 0) || (pos < cur_playing->end))
return pos;
// We have reached the end of the current playing song, update cur_playing to
// the next song in the queue and initialize stream_start and output_start values.
i = 0;
while (cur_playing && (cur_playing->end != 0) && (pos > cur_playing->end))
{
i++;
id = (int)cur_playing->id;
worker_execute(playcount_inc_cb, &id, sizeof(int), 5);
#ifdef LASTFM
worker_execute(scrobble_cb, &id, sizeof(int), 8);
#endif
history_add(cur_playing->id, cur_playing->item_id);
if (consume)
db_queue_delete_byitemid(cur_playing->item_id);
if (!cur_playing->play_next)
{
playback_abort();
return pos;
}
ps = cur_playing;
cur_playing = cur_playing->play_next;
source_free(ps);
}
if (i > 0)
{
DPRINTF(E_DBG, L_PLAYER, "Playback switched to next song\n");
status_update(PLAY_PLAYING);
outputs_metadata_prune(pos);
}
return pos;
}
/*
* Returns the next player source 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 player_source *
source_next()
{
struct player_source *ps = NULL;
struct db_queue_item *queue_item;
if (!cur_streaming)
{
DPRINTF(E_LOG, L_PLAYER, "source_next() called with no current streaming source available\n");
return NULL;
}
if (repeat == REPEAT_SONG)
{
queue_item = db_queue_fetch_byitemid(cur_streaming->item_id);
if (!queue_item)
{
DPRINTF(E_LOG, L_PLAYER, "Error fetching item from queue '%s' (id=%d, item-id=%d)\n", cur_streaming->path, cur_streaming->id, cur_streaming->item_id);
return NULL;
}
}
else
{
queue_item = db_queue_fetch_next(cur_streaming->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)
{
DPRINTF(E_LOG, L_PLAYER, "Error fetching item from queue '%s' (id=%d, item-id=%d)\n", cur_streaming->path, cur_streaming->id, cur_streaming->item_id);
return NULL;
}
}
}
if (!queue_item)
{
DPRINTF(E_DBG, L_PLAYER, "Reached end of queue\n");
return NULL;
}
ps = source_new(queue_item);
free_queue_item(queue_item, 0);
return ps;
}
/*
* Returns the previous player source based on the current streaming source
*/
static struct player_source *
source_prev()
{
struct player_source *ps = NULL;
struct db_queue_item *queue_item;
if (!cur_streaming)
{
DPRINTF(E_LOG, L_PLAYER, "source_prev() called with no current streaming source available\n");
return NULL;
}
queue_item = db_queue_fetch_prev(cur_streaming->item_id, shuffle);
if (!queue_item)
return NULL;
ps = source_new(queue_item);
free_queue_item(queue_item, 0);
return ps;
}
static int
source_switch(int nbytes)
{
struct player_source *ps;
int ret;
DPRINTF(E_DBG, L_PLAYER, "Switching track\n");
source_close(last_rtptime + AIRTUNES_V2_PACKET_SAMPLES + BTOS(nbytes) - 1);
while ((ps = source_next()))
{
ret = source_open(ps, cur_streaming->end + 1, 0);
if (ret < 0)
{
db_queue_delete_byitemid(ps->item_id);
continue;
}
ret = source_play();
if (ret < 0)
{
db_queue_delete_byitemid(ps->item_id);
source_close(last_rtptime + AIRTUNES_V2_PACKET_SAMPLES + BTOS(nbytes) - 1);
continue;
}
break;
}
if (!ps) // End of queue
{
cur_streaming = NULL;
return 0;
}
metadata_trigger(0);
return 0;
}
/* ----------------- Main read, write and playback timer event -------------- */
// Returns -1 on error (caller should abort playback), or bytes read (possibly 0)
static int
source_read(uint8_t *buf, int len)
{
int nbytes;
uint32_t item_id;
int ret;
short flags;
// Nothing to read, stream silence until source_check() stops playback
if (!cur_streaming)
{
memset(buf, 0, len);
return len;
}
nbytes = input_read(buf, len, &flags);
if ((nbytes < 0) || (flags & INPUT_FLAG_ERROR))
{
DPRINTF(E_LOG, L_PLAYER, "Error reading source %d\n", cur_streaming->id);
nbytes = 0;
item_id = cur_streaming->item_id;
ret = source_switch(0);
db_queue_delete_byitemid(item_id);
if (ret < 0)
return -1;
}
else if (flags & INPUT_FLAG_EOF)
{
ret = source_switch(nbytes);
if (ret < 0)
return -1;
}
else if (flags & INPUT_FLAG_METADATA)
{
metadata_trigger(0);
}
// We pad the output buffer with silence if we don't have enough data for a
// full packet and there is no more data coming up (no more tracks in queue)
if ((nbytes < len) && (!cur_streaming))
{
memset(buf + nbytes, 0, len - nbytes);
nbytes = len;
}
return nbytes;
}
static void
playback_write(void)
{
int want;
int got;
source_check();
// Make sure playback is still running after source_check()
if (player_state == PLAY_STOPPED)
return;
pb_read_deficit++;
while (pb_read_deficit)
{
want = sizeof(pb_buffer) - pb_buffer_offset;
got = source_read(pb_buffer + pb_buffer_offset, want);
if (got == want)
{
pb_read_deficit--;
last_rtptime += AIRTUNES_V2_PACKET_SAMPLES;
outputs_write(pb_buffer, last_rtptime);
pb_buffer_offset = 0;
}
else if (got < 0)
{
DPRINTF(E_LOG, L_PLAYER, "Error reading from source, aborting playback\n");
playback_abort();
return;
}
else if (pb_read_deficit > pb_read_deficit_max)
{
DPRINTF(E_LOG, L_PLAYER, "Source is not providing sufficient data, temporarily suspending playback (deficit=%d)\n", pb_read_deficit);
playback_suspend();
return;
}
else
{
DPRINTF(E_SPAM, L_PLAYER, "Partial read (offset=%zu, deficit=%d)\n", pb_buffer_offset, pb_read_deficit);
pb_buffer_offset += got;
return;
}
}
}
static void
playback_cb(int fd, short what, void *arg)
{
struct timespec next_tick;
uint64_t overrun;
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);
playback_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;
playback_suspend();
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;
}
// 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.
next_tick = timespec_add(pb_timer_last, tick_interval);
for (; overrun > 0; overrun--)
next_tick = timespec_add(next_tick, tick_interval);
do
{
playback_write();
packet_timer_last = timespec_add(packet_timer_last, packet_time);
}
while ((timespec_cmp(packet_timer_last, next_tick) < 0) && (player_state == PLAY_PLAYING));
// Make sure playback is still running
if (player_state == PLAY_STOPPED)
return;
pb_timer_last = next_tick;
}
/* ----------------- Output device handling (add/remove etc) ---------------- */
static void
device_list_sort(void)
{
struct output_device *device;
struct output_device *next;
struct output_device *prev;
int swaps;
// Swap sorting since even the most inefficient sorting should do fine here
do
{
swaps = 0;
prev = NULL;
for (device = dev_list; device && device->next; device = device->next)
{
next = device->next;
if ( (outputs_priority(device) > outputs_priority(next)) ||
(outputs_priority(device) == outputs_priority(next) && strcasecmp(device->name, next->name) > 0) )
{
if (device == dev_list)
dev_list = next;
if (prev)
prev->next = next;
device->next = next->next;
next->next = device;
swaps++;
}
prev = device;
}
}
while (swaps > 0);
}
static void
device_remove(struct output_device *remove)
{
struct output_device *device;
struct output_device *prev;
int ret;
prev = NULL;
for (device = dev_list; device; device = device->next)
{
if (device == remove)
break;
prev = device;
}
if (!device)
return;
// Save device volume
ret = db_speaker_save(remove);
if (ret < 0)
DPRINTF(E_LOG, L_PLAYER, "Could not save state for %s device '%s'\n", remove->type_name, remove->name);
DPRINTF(E_INFO, L_PLAYER, "Removing %s device '%s'; stopped advertising\n", remove->type_name, remove->name);
// Make sure device isn't selected anymore
if (remove->selected)
speaker_deselect_output(remove);
if (!prev)
dev_list = remove->next;
else
prev->next = remove->next;
outputs_device_free(remove);
}
static int
device_check(struct output_device *check)
{
struct output_device *device;
for (device = dev_list; device; device = device->next)
{
if (device == check)
break;
}
return (device) ? 0 : -1;
}
static enum command_state
device_add(void *arg, int *retval)
{
union player_arg *cmdarg;
struct output_device *add;
struct output_device *device;
char *keep_name;
int ret;
cmdarg = arg;
add = cmdarg->device;
for (device = dev_list; device; device = device->next)
{
if (device->id == add->id)
break;
}
// New device
if (!device)
{
device = add;
keep_name = strdup(device->name);
ret = db_speaker_get(device, device->id);
if (ret < 0)
{
device->selected = 0;
device->volume = (master_volume >= 0) ? master_volume : PLAYER_DEFAULT_VOLUME;
}
free(device->name);
device->name = keep_name;
if (device->selected && (player_state != PLAY_PLAYING))
speaker_select_output(device);
else
device->selected = 0;
device->next = dev_list;
dev_list = device;
}
// Update to a device already in the list
else
{
device->advertised = 1;
if (add->v4_address)
{
if (device->v4_address)
free(device->v4_address);
device->v4_address = add->v4_address;
device->v4_port = add->v4_port;
// Address is ours now
add->v4_address = NULL;
}
if (add->v6_address)
{
if (device->v6_address)
free(device->v6_address);
device->v6_address = add->v6_address;
device->v6_port = add->v6_port;
// Address is ours now
add->v6_address = NULL;
}
if (device->name)
free(device->name);
device->name = add->name;
add->name = NULL;
device->has_password = add->has_password;
device->password = add->password;
outputs_device_free(add);
}
device_list_sort();
*retval = 0;
return COMMAND_END;
}
static enum command_state
device_remove_family(void *arg, int *retval)
{
union player_arg *cmdarg;
struct output_device *remove;
struct output_device *device;
cmdarg = arg;
remove = cmdarg->device;
for (device = dev_list; device; device = device->next)
{
if (device->id == remove->id)
break;
}
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 (!device->session)
device_remove(device);
}
outputs_device_free(remove);
*retval = 0;
return COMMAND_END;
}
static enum command_state
device_auth_kickoff(void *arg, int *retval)
{
union player_arg *cmdarg = arg;
outputs_authorize(cmdarg->auth.type, cmdarg->auth.pin);
*retval = 0;
return COMMAND_END;
}
static enum command_state
device_metadata_send(void *arg, int *retval)
{
union player_arg *cmdarg;
struct input_metadata *imd;
struct output_metadata *omd;
cmdarg = arg;
imd = cmdarg->metadata_param.input;
omd = cmdarg->metadata_param.output;
outputs_metadata_send(omd, imd->rtptime, imd->offset, imd->startup);
status_update(player_state);
*retval = 0;
return COMMAND_END;
}
/* -------- Output device callbacks executed in the player thread ----------- */
static void
device_streaming_cb(struct output_device *device, struct output_session *session, enum output_device_state status)
{
int ret;
DPRINTF(E_DBG, L_PLAYER, "Callback from %s to device_streaming_cb\n", outputs_name(device->type));
ret = device_check(device);
if (ret < 0)
{
DPRINTF(E_LOG, L_PLAYER, "Output device disappeared during streaming!\n");
output_sessions--;
return;
}
if (status == OUTPUT_STATE_FAILED)
{
DPRINTF(E_LOG, L_PLAYER, "The %s device '%s' FAILED\n", device->type_name, device->name);
output_sessions--;
if (player_state == PLAY_PLAYING)
speaker_deselect_output(device);
device->session = NULL;
if (!device->advertised)
device_remove(device);
if (output_sessions == 0)
playback_abort();
}
else if (status == OUTPUT_STATE_STOPPED)
{
DPRINTF(E_INFO, L_PLAYER, "The %s device '%s' stopped\n", device->type_name, device->name);
output_sessions--;
device->session = NULL;
if (!device->advertised)
device_remove(device);
}
else
outputs_status_cb(session, device_streaming_cb);
}
static void
device_command_cb(struct output_device *device, struct output_session *session, enum output_device_state status)
{
DPRINTF(E_DBG, L_PLAYER, "Callback from %s to device_command_cb\n", outputs_name(device->type));
outputs_status_cb(session, device_streaming_cb);
if (status == OUTPUT_STATE_FAILED)
device_streaming_cb(device, session, status);
// Used by playback_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);
}
commands_exec_end(cmdbase, 0);
}
static void
device_shutdown_cb(struct output_device *device, struct output_session *session, enum output_device_state status)
{
int retval;
int ret;
DPRINTF(E_DBG, L_PLAYER, "Callback from %s to device_shutdown_cb\n", outputs_name(device->type));
if (output_sessions)
output_sessions--;
retval = commands_exec_returnvalue(cmdbase);
ret = device_check(device);
if (ret < 0)
{
DPRINTF(E_WARN, L_PLAYER, "Output device disappeared before shutdown completion!\n");
if (retval != -2)
retval = -1;
goto out;
}
device->session = NULL;
if (!device->advertised)
device_remove(device);
out:
/* cur_cmd->ret already set
* - to 0 (or -2 if password issue) in speaker_set()
* - to -1 above on error
*/
commands_exec_end(cmdbase, retval);
}
static void
device_lost_cb(struct output_device *device, struct output_session *session, enum output_device_state status)
{
DPRINTF(E_DBG, L_PLAYER, "Callback from %s to device_lost_cb\n", outputs_name(device->type));
// We lost that device during startup for some reason, not much we can do here
if (status == OUTPUT_STATE_FAILED)
DPRINTF(E_WARN, L_PLAYER, "Failed to stop lost device\n");
else
DPRINTF(E_INFO, L_PLAYER, "Lost device stopped properly\n");
}
static void
device_activate_cb(struct output_device *device, struct output_session *session, enum output_device_state status)
{
struct timespec ts;
int retval;
int ret;
DPRINTF(E_DBG, L_PLAYER, "Callback from %s to device_activate_cb\n", outputs_name(device->type));
retval = commands_exec_returnvalue(cmdbase);
ret = device_check(device);
if (ret < 0)
{
DPRINTF(E_WARN, L_PLAYER, "Output device disappeared during startup!\n");
outputs_status_cb(session, device_lost_cb);
outputs_device_stop(session);
if (retval != -2)
retval = -1;
goto out;
}
if (status == OUTPUT_STATE_PASSWORD)
{
status = OUTPUT_STATE_FAILED;
retval = -2;
}
if (status == OUTPUT_STATE_FAILED)
{
speaker_deselect_output(device);
if (!device->advertised)
device_remove(device);
if (retval != -2)
retval = -1;
goto out;
}
device->session = session;
output_sessions++;
if ((player_state == PLAY_PLAYING) && (output_sessions == 1))
{
ret = clock_gettime_with_res(CLOCK_MONOTONIC, &ts, &timer_res);
if (ret < 0)
{
DPRINTF(E_LOG, L_PLAYER, "Could not get current time: %s\n", strerror(errno));
// Fallback to nearest timer expiration time
ts.tv_sec = pb_timer_last.tv_sec;
ts.tv_nsec = pb_timer_last.tv_nsec;
}
outputs_playback_start(last_rtptime + AIRTUNES_V2_PACKET_SAMPLES, &ts);
}
outputs_status_cb(session, device_streaming_cb);
out:
/* cur_cmd->ret already set
* - to 0 in speaker_set() (default)
* - to -2 above if password issue
* - to -1 above on error
*/
commands_exec_end(cmdbase, retval);
}
static void
device_probe_cb(struct output_device *device, struct output_session *session, enum output_device_state status)
{
int retval;
int ret;
DPRINTF(E_DBG, L_PLAYER, "Callback from %s to device_probe_cb\n", outputs_name(device->type));
retval = commands_exec_returnvalue(cmdbase);
ret = device_check(device);
if (ret < 0)
{
DPRINTF(E_WARN, L_PLAYER, "Output device disappeared during probe!\n");
if (retval != -2)
retval = -1;
goto out;
}
if (status == OUTPUT_STATE_PASSWORD)
{
status = OUTPUT_STATE_FAILED;
retval = -2;
}
if (status == OUTPUT_STATE_FAILED)
{
speaker_deselect_output(device);
if (!device->advertised)
device_remove(device);
if (retval != -2)
retval = -1;
goto out;
}
out:
/* cur_cmd->ret already set
* - to 0 in speaker_set() (default)
* - to -2 above if password issue
* - to -1 above on error
*/
commands_exec_end(cmdbase, retval);
}
static void
device_restart_cb(struct output_device *device, struct output_session *session, enum output_device_state status)
{
int retval;
int ret;
DPRINTF(E_DBG, L_PLAYER, "Callback from %s to device_restart_cb\n", outputs_name(device->type));
retval = commands_exec_returnvalue(cmdbase);
ret = device_check(device);
if (ret < 0)
{
DPRINTF(E_WARN, L_PLAYER, "Output device disappeared during restart!\n");
outputs_status_cb(session, device_lost_cb);
outputs_device_stop(session);
if (retval != -2)
retval = -1;
goto out;
}
if (status == OUTPUT_STATE_PASSWORD)
{
status = OUTPUT_STATE_FAILED;
retval = -2;
}
if (status == OUTPUT_STATE_FAILED)
{
speaker_deselect_output(device);
if (!device->advertised)
device_remove(device);
if (retval != -2)
retval = -1;
goto out;
}
device->session = session;
output_sessions++;
outputs_status_cb(session, device_streaming_cb);
out:
commands_exec_end(cmdbase, retval);
}
/* ------------------------- Internal playback routines --------------------- */
static int
playback_timer_start(void)
{
struct itimerspec tick;
int ret;
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 = tick_interval;
tick.it_value = 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
playback_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;
}
static void
playback_abort(void)
{
outputs_playback_stop();
playback_timer_stop();
source_stop();
if (!clear_queue_on_stop_disabled)
db_queue_clear(0);
status_update(PLAY_STOPPED);
outputs_metadata_purge();
}
// Temporarily suspends/resets playback, used when input buffer underruns or in
// case of problems writing to the outputs
static void
playback_suspend(void)
{
player_flush_pending = outputs_flush(device_command_cb, last_rtptime + AIRTUNES_V2_PACKET_SAMPLES);
playback_timer_stop();
status_update(PLAY_PAUSED);
seek_save();
// No devices to wait for, just set the restart cb right away
if (player_flush_pending == 0)
input_buffer_full_cb(player_playback_start);
}
/* --------------- Actual commands, executed in the player thread ----------- */
static enum command_state
get_status(void *arg, int *retval)
{
union player_arg *cmdarg = arg;
struct timespec ts;
struct player_source *ps;
struct player_status *status;
uint64_t pos;
int ret;
status = cmdarg->status;
memset(status, 0, sizeof(struct player_status));
status->shuffle = shuffle;
status->consume = consume;
status->repeat = repeat;
status->volume = master_volume;
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 = cur_streaming->id;
status->item_id = cur_streaming->item_id;
pos = last_rtptime + AIRTUNES_V2_PACKET_SAMPLES - cur_streaming->stream_start;
status->pos_ms = (pos * 1000) / 44100;
status->len_ms = cur_streaming->len_ms;
break;
case PLAY_PLAYING:
if (!cur_playing)
{
DPRINTF(E_DBG, L_PLAYER, "Player status: playing (buffering)\n");
status->status = PLAY_PAUSED;
ps = cur_streaming;
// Avoid a visible 2-second jump backward for the client
pos = ps->output_start - ps->stream_start;
}
else
{
DPRINTF(E_DBG, L_PLAYER, "Player status: playing\n");
status->status = PLAY_PLAYING;
ps = cur_playing;
ret = player_get_current_pos(&pos, &ts, 0);
if (ret < 0)
{
DPRINTF(E_LOG, L_PLAYER, "Could not get current stream position for playstatus\n");
pos = 0;
}
if (pos < ps->stream_start)
pos = 0;
else
pos -= ps->stream_start;
}
status->pos_ms = (pos * 1000) / 44100;
status->len_ms = ps->len_ms;
status->id = ps->id;
status->item_id = ps->item_id;
break;
}
*retval = 0;
return COMMAND_END;
}
static enum command_state
now_playing(void *arg, int *retval)
{
union player_arg *cmdarg = arg;
uint32_t *id;
struct player_source *ps_playing;
id = cmdarg->id_ptr;
ps_playing = source_now_playing();
if (ps_playing)
*id = ps_playing->id;
else
{
*retval = -1;
return COMMAND_END;
}
*retval = 0;
return COMMAND_END;
}
static enum command_state
playback_stop(void *arg, int *retval)
{
struct player_source *ps_playing;
// 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_command_cb, last_rtptime + AIRTUNES_V2_PACKET_SAMPLES);
playback_timer_stop();
ps_playing = source_now_playing();
if (ps_playing)
{
history_add(ps_playing->id, ps_playing->item_id);
}
source_stop();
status_update(PLAY_STOPPED);
outputs_metadata_purge();
// We're async if we need to flush devices
if (*retval > 0)
return COMMAND_PENDING;
return COMMAND_END;
}
static enum command_state
playback_start_bh(void *arg, int *retval)
{
int ret;
ret = clock_gettime_with_res(CLOCK_MONOTONIC, &pb_pos_stamp, &timer_res);
if (ret < 0)
{
DPRINTF(E_LOG, L_PLAYER, "Couldn't get current clock: %s\n", strerror(errno));
goto out_fail;
}
playback_timer_stop();
// initialize the packet timer to the same relative time that we have
// for the playback timer.
packet_timer_last.tv_sec = pb_pos_stamp.tv_sec;
packet_timer_last.tv_nsec = pb_pos_stamp.tv_nsec;
pb_timer_last.tv_sec = pb_pos_stamp.tv_sec;
pb_timer_last.tv_nsec = pb_pos_stamp.tv_nsec;
pb_buffer_offset = 0;
pb_read_deficit = 0;
ret = playback_timer_start();
if (ret < 0)
goto out_fail;
// Everything OK, start outputs
outputs_playback_start(last_rtptime + AIRTUNES_V2_PACKET_SAMPLES, &pb_pos_stamp);
status_update(PLAY_PLAYING);
*retval = 0;
return COMMAND_END;
out_fail:
playback_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;
struct player_source *ps;
int 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);
*retval = 1; // Value greater 0 will prevent execution of the bottom half function
return COMMAND_END;
}
// Update global playback position
pb_pos = last_rtptime + AIRTUNES_V2_PACKET_SAMPLES - 88200;
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)
{
// Resume playback of current source
ps = source_now_playing();
DPRINTF(E_DBG, L_PLAYER, "Resume playback of '%s' (id=%d, item-id=%d)\n", ps->path, ps->id, ps->item_id);
}
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);
source_stop();
ps = source_new(queue_item);
if (!ps)
{
playback_abort();
*retval = -1;
return COMMAND_END;
}
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 = source_open(ps, last_rtptime + AIRTUNES_V2_PACKET_SAMPLES, seek_ms);
if (ret < 0)
{
playback_abort();
*retval = -1;
return COMMAND_END;
}
}
ret = source_play();
if (ret < 0)
{
playback_abort();
*retval = -1;
return COMMAND_END;
}
metadata_trigger(1);
// Start sessions on selected devices
*retval = 0;
for (device = dev_list; device; device = device->next)
{
if (device->selected && !device->session)
{
ret = outputs_device_start(device, device_restart_cb, last_rtptime + AIRTUNES_V2_PACKET_SAMPLES);
if (ret < 0)
{
DPRINTF(E_LOG, L_PLAYER, "Could not start selected %s device '%s'\n", device->type_name, device->name);
continue;
}
DPRINTF(E_INFO, L_PLAYER, "Using selected %s device '%s'\n", device->type_name, device->name);
(*retval)++;
}
}
// If autoselecting is enabled, try to autoselect a non-selected device if the above failed
if (speaker_autoselect && (*retval == 0) && (output_sessions == 0))
for (device = dev_list; device; device = device->next)
{
if ((outputs_priority(device) == 0) || device->session)
continue;
speaker_select_output(device);
ret = outputs_device_start(device, device_restart_cb, last_rtptime + AIRTUNES_V2_PACKET_SAMPLES);
if (ret < 0)
{
DPRINTF(E_DBG, L_PLAYER, "Could not autoselect %s device '%s'\n", device->type_name, device->name);
speaker_deselect_output(device);
continue;
}
DPRINTF(E_INFO, L_PLAYER, "Autoselecting %s device '%s'\n", device->type_name, device->name);
(*retval)++;
break;
}
// We're async if we need to start devices
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 db_queue_item *queue_item = NULL;
union player_arg *cmdarg = arg;
enum command_state cmd_state;
int ret;
*retval = -1;
if (player_state == PLAY_STOPPED)
{
db_queue_clear(0);
ret = db_queue_add_by_fileid(cmdarg->id, 0, 0);
if (ret < 0)
return COMMAND_END;
queue_item = db_queue_fetch_byfileid(cmdarg->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)
{
int ret;
int pos_sec;
struct player_source *ps;
// The upper half is playback_pause, therefor the current playing item is
// already set as the cur_streaming (cur_playing is NULL).
if (!cur_streaming)
{
DPRINTF(E_LOG, L_PLAYER, "Could not get current stream source\n");
*retval = -1;
return COMMAND_END;
}
// Only add to history if playback started
if (cur_streaming->output_start > cur_streaming->stream_start)
history_add(cur_streaming->id, cur_streaming->item_id);
// Compute the playing time in seconds for the current song
if (cur_streaming->output_start > cur_streaming->stream_start)
pos_sec = (cur_streaming->output_start - cur_streaming->stream_start) / 44100;
else
pos_sec = 0;
// Only skip to the previous song if the playing time is less than 3 seconds,
// otherwise restart the current song.
DPRINTF(E_DBG, L_PLAYER, "Skipping song played %d sec\n", pos_sec);
if (pos_sec < 3)
{
ps = source_prev();
if (!ps)
{
playback_abort();
*retval = -1;
return COMMAND_END;
}
source_stop();
ret = source_open(ps, last_rtptime + AIRTUNES_V2_PACKET_SAMPLES, 0);
if (ret < 0)
{
source_free(ps);
playback_abort();
*retval = -1;
return COMMAND_END;
}
}
else
{
ret = source_seek(0);
if (ret < 0)
{
playback_abort();
*retval = -1;
return COMMAND_END;
}
}
if (player_state == PLAY_STOPPED)
{
*retval = -1;
return COMMAND_END;
}
// Silent status change - playback_start() sends the real status update
player_state = PLAY_PAUSED;
*retval = 0;
return COMMAND_END;
}
static enum command_state
playback_next_bh(void *arg, int *retval)
{
struct player_source *ps;
int ret;
uint32_t item_id;
// The upper half is playback_pause, therefor the current playing item is
// already set as the cur_streaming (cur_playing is NULL).
if (!cur_streaming)
{
DPRINTF(E_LOG, L_PLAYER, "Could not get current stream source\n");
*retval = -1;
return COMMAND_END;
}
// Only add to history if playback started
if (cur_streaming->output_start > cur_streaming->stream_start)
history_add(cur_streaming->id, cur_streaming->item_id);
item_id = cur_streaming->item_id;
ps = source_next();
if (!ps)
{
playback_abort();
*retval = -1;
return COMMAND_END;
}
source_stop();
ret = source_open(ps, last_rtptime + AIRTUNES_V2_PACKET_SAMPLES, 0);
if (ret < 0)
{
source_free(ps);
playback_abort();
*retval = -1;
return COMMAND_END;
}
if (player_state == PLAY_STOPPED)
{
*retval = -1;
return COMMAND_END;
}
if (consume)
db_queue_delete_byitemid(item_id);
// Silent status change - playback_start() sends the real status update
player_state = PLAY_PAUSED;
*retval = 0;
return COMMAND_END;
}
static enum command_state
playback_seek_bh(void *arg, int *retval)
{
union player_arg *cmdarg = arg;
int ms;
int ret;
*retval = -1;
if (!cur_streaming)
return COMMAND_END;
ms = cmdarg->intval;
ret = source_seek(ms);
if (ret < 0)
{
playback_abort();
return COMMAND_END;
}
// Silent status change - playback_start() sends the real status update
player_state = PLAY_PAUSED;
*retval = 0;
return COMMAND_END;
}
static enum command_state
playback_pause_bh(void *arg, int *retval)
{
*retval = -1;
// outputs_flush() in playback_pause() may have a caused a failure callback
// from the output, which in streaming_cb() can cause playback_abort() ->
// cur_streaming is NULL
if (!cur_streaming)
return COMMAND_END;
if (cur_streaming->data_kind == DATA_KIND_HTTP || cur_streaming->data_kind == DATA_KIND_PIPE)
{
DPRINTF(E_DBG, L_PLAYER, "Source is not pausable, abort playback\n");
playback_abort();
return COMMAND_END;
}
status_update(PLAY_PAUSED);
seek_save();
*retval = 0;
return COMMAND_END;
}
static enum command_state
playback_pause(void *arg, int *retval)
{
uint64_t pos;
pos = source_check();
if (pos == 0)
{
DPRINTF(E_LOG, L_PLAYER, "Could not retrieve current position for pause\n");
playback_abort();
*retval = -1;
return COMMAND_END;
}
// Make sure playback is still running after source_check()
if (player_state == PLAY_STOPPED)
{
*retval = -1;
return COMMAND_END;
}
*retval = outputs_flush(device_command_cb, last_rtptime + AIRTUNES_V2_PACKET_SAMPLES);
playback_timer_stop();
source_pause(pos);
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
speaker_enumerate(void *arg, int *retval)
{
union player_arg *cmdarg = arg;
struct output_device *device;
struct spk_enum *spk_enum;
struct spk_flags flags;
spk_enum = cmdarg->spk_enum;
#ifdef DEBUG_RELVOL
DPRINTF(E_DBG, L_PLAYER, "*** master: %d\n", master_volume);
#endif
for (device = dev_list; device; device = device->next)
{
if (device->advertised || device->selected)
{
flags.selected = device->selected;
flags.has_password = device->has_password;
flags.has_video = device->has_video;
spk_enum->cb(device->id, device->name, device->relvol, device->volume, flags, spk_enum->arg);
#ifdef DEBUG_RELVOL
DPRINTF(E_DBG, L_PLAYER, "*** %s: abs %d rel %d\n", device->name, device->volume, device->relvol);
#endif
}
}
*retval = 0;
return COMMAND_END;
}
static int
speaker_activate(struct output_device *device)
{
int ret;
if (!device)
{
DPRINTF(E_LOG, L_PLAYER, "Bug! speaker_activate called with device\n");
return -1;
}
if (player_state == PLAY_PLAYING)
{
DPRINTF(E_DBG, L_PLAYER, "Activating %s device '%s'\n", device->type_name, device->name);
ret = outputs_device_start(device, device_activate_cb, last_rtptime + AIRTUNES_V2_PACKET_SAMPLES);
if (ret < 0)
{
DPRINTF(E_LOG, L_PLAYER, "Could not start %s device '%s'\n", device->type_name, device->name);
return -1;
}
}
else
{
DPRINTF(E_DBG, L_PLAYER, "Probing %s device '%s'\n", device->type_name, device->name);
ret = outputs_device_probe(device, device_probe_cb);
if (ret < 0)
{
DPRINTF(E_LOG, L_PLAYER, "Could not probe %s device '%s'\n", device->type_name, device->name);
return -1;
}
}
return 0;
}
static int
speaker_deactivate(struct output_device *device)
{
DPRINTF(E_DBG, L_PLAYER, "Deactivating %s device '%s'\n", device->type_name, device->name);
outputs_status_cb(device->session, device_shutdown_cb);
outputs_device_stop(device->session);
return 0;
}
static enum command_state
speaker_set(void *arg, int *retval)
{
union player_arg *cmdarg = arg;
struct output_device *device;
uint64_t *ids;
int nspk;
int i;
int ret;
*retval = 0;
ids = cmdarg->speaker_set_param.device_ids;
if (ids)
nspk = ids[0];
else
nspk = 0;
DPRINTF(E_DBG, L_PLAYER, "Speaker set: %d speakers\n", nspk);
*retval = 0;
for (device = dev_list; device; device = device->next)
{
for (i = 1; i <= nspk; i++)
{
DPRINTF(E_DBG, L_PLAYER, "Set %" PRIu64 " device %" PRIu64 "\n", ids[i], device->id);
if (ids[i] == device->id)
break;
}
if (i <= nspk)
{
if (device->has_password && !device->password)
{
DPRINTF(E_INFO, L_PLAYER, "The %s device '%s' is password-protected, but we don't have it\n", device->type_name, device->name);
cmdarg->speaker_set_param.intval = -2;
continue;
}
DPRINTF(E_DBG, L_PLAYER, "The %s device '%s' is selected\n", device->type_name, device->name);
if (!device->selected)
speaker_select_output(device);
if (!device->session)
{
ret = speaker_activate(device);
if (ret < 0)
{
DPRINTF(E_LOG, L_PLAYER, "Could not activate %s device '%s'\n", device->type_name, device->name);
speaker_deselect_output(device);
if (cmdarg->speaker_set_param.intval != -2)
cmdarg->speaker_set_param.intval = -1;
}
else
(*retval)++;
}
}
else
{
DPRINTF(E_DBG, L_PLAYER, "The %s device '%s' is NOT selected\n", device->type_name, device->name);
if (device->selected)
speaker_deselect_output(device);
if (device->session)
{
ret = speaker_deactivate(device);
if (ret < 0)
{
DPRINTF(E_LOG, L_PLAYER, "Could not deactivate %s device '%s'\n", device->type_name, device->name);
if (cmdarg->speaker_set_param.intval != -2)
cmdarg->speaker_set_param.intval = -1;
}
else
(*retval)++;
}
}
}
listener_notify(LISTENER_SPEAKER);
if (*retval > 0)
return COMMAND_PENDING; // async
*retval = cmdarg->speaker_set_param.intval;
return COMMAND_END;
}
static enum command_state
volume_set(void *arg, int *retval)
{
union player_arg *cmdarg = arg;
struct output_device *device;
int volume;
*retval = 0;
volume = cmdarg->intval;
if (master_volume == volume)
return COMMAND_END;
master_volume = volume;
for (device = dev_list; device; device = device->next)
{
if (!device->selected)
continue;
device->volume = rel_to_vol(device->relvol);
#ifdef DEBUG_RELVOL
DPRINTF(E_DBG, L_PLAYER, "*** %s: abs %d rel %d\n", device->name, device->volume, device->relvol);
#endif
if (device->session)
*retval += outputs_device_volume_set(device, device_command_cb);
}
listener_notify(LISTENER_VOLUME);
if (*retval > 0)
return COMMAND_PENDING; // async
return COMMAND_END;
}
static enum command_state
volume_setrel_speaker(void *arg, int *retval)
{
union player_arg *cmdarg = arg;
struct output_device *device;
uint64_t id;
int relvol;
*retval = 0;
id = cmdarg->vol_param.spk_id;
relvol = cmdarg->vol_param.volume;
for (device = dev_list; device; device = device->next)
{
if (device->id != id)
continue;
if (!device->selected)
{
*retval = 0;
return COMMAND_END;
}
device->relvol = relvol;
device->volume = rel_to_vol(relvol);
#ifdef DEBUG_RELVOL
DPRINTF(E_DBG, L_PLAYER, "*** %s: abs %d rel %d\n", device->name, device->volume, device->relvol);
#endif
if (device->session)
*retval = outputs_device_volume_set(device, device_command_cb);
break;
}
listener_notify(LISTENER_VOLUME);
if (*retval > 0)
return COMMAND_PENDING; // async
return COMMAND_END;
}
static enum command_state
volume_setabs_speaker(void *arg, int *retval)
{
union player_arg *cmdarg = arg;
struct output_device *device;
uint64_t id;
int volume;
*retval = 0;
id = cmdarg->vol_param.spk_id;
volume = cmdarg->vol_param.volume;
master_volume = volume;
for (device = dev_list; device; device = device->next)
{
if (!device->selected)
continue;
if (device->id != id)
{
device->relvol = vol_to_rel(device->volume);
#ifdef DEBUG_RELVOL
DPRINTF(E_DBG, L_PLAYER, "*** %s: abs %d rel %d\n", device->name, device->volume, device->relvol);
#endif
continue;
}
else
{
device->relvol = 100;
device->volume = master_volume;
#ifdef DEBUG_RELVOL
DPRINTF(E_DBG, L_PLAYER, "*** %s: abs %d rel %d\n", device->name, device->volume, device->relvol);
#endif
if (device->session)
*retval = outputs_device_volume_set(device, device_command_cb);//FIXME Does this need to be += ?
}
}
listener_notify(LISTENER_VOLUME);
if (*retval > 0)
return COMMAND_PENDING; // async
return COMMAND_END;
}
static enum command_state
repeat_set(void *arg, int *retval)
{
union player_arg *cmdarg = arg;
if (cmdarg->mode == repeat)
{
*retval = 0;
return COMMAND_END;
}
switch (cmdarg->mode)
{
case REPEAT_OFF:
case REPEAT_SONG:
case REPEAT_ALL:
repeat = cmdarg->mode;
break;
default:
DPRINTF(E_LOG, L_PLAYER, "Invalid repeat mode: %d\n", cmdarg->mode);
*retval = -1;
return COMMAND_END;
}
listener_notify(LISTENER_OPTIONS);
*retval = 0;
return COMMAND_END;
}
static enum command_state
shuffle_set(void *arg, int *retval)
{
union player_arg *cmdarg = arg;
uint32_t cur_id;
switch (cmdarg->intval)
{
case 1:
if (!shuffle)
{
cur_id = cur_streaming ? cur_streaming->item_id : 0;
db_queue_reshuffle(cur_id);
}
/* FALLTHROUGH */
case 0:
shuffle = cmdarg->intval;
break;
default:
DPRINTF(E_LOG, L_PLAYER, "Invalid shuffle mode: %d\n", cmdarg->intval);
*retval = -1;
return COMMAND_END;
}
listener_notify(LISTENER_OPTIONS);
*retval = 0;
return COMMAND_END;
}
static enum command_state
consume_set(void *arg, int *retval)
{
union player_arg *cmdarg = arg;
consume = cmdarg->intval;
listener_notify(LISTENER_OPTIONS);
*retval = 0;
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
listener_notify(LISTENER_QUEUE);
*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;
}
/* ------------------------------- Player API ------------------------------- */
int
player_get_current_pos(uint64_t *pos, struct timespec *ts, int commit)
{
uint64_t delta;
int ret;
ret = clock_gettime_with_res(CLOCK_MONOTONIC, ts, &timer_res);
if (ret < 0)
{
DPRINTF(E_LOG, L_PLAYER, "Couldn't get clock: %s\n", strerror(errno));
return -1;
}
delta = (ts->tv_sec - pb_pos_stamp.tv_sec) * 1000000 + (ts->tv_nsec - pb_pos_stamp.tv_nsec) / 1000;
#ifdef DEBUG_SYNC
DPRINTF(E_DBG, L_PLAYER, "Delta is %" PRIu64 " usec\n", delta);
#endif
delta = (delta * 44100) / 1000000;
#ifdef DEBUG_SYNC
DPRINTF(E_DBG, L_PLAYER, "Delta is %" PRIu64 " samples\n", delta);
#endif
*pos = pb_pos + delta;
if (commit)
{
pb_pos = *pos;
pb_pos_stamp.tv_sec = ts->tv_sec;
pb_pos_stamp.tv_nsec = ts->tv_nsec;
#ifdef DEBUG_SYNC
DPRINTF(E_DBG, L_PLAYER, "Pos: %" PRIu64 " (clock)\n", *pos);
#endif
}
return 0;
}
int
player_get_status(struct player_status *status)
{
union player_arg cmdarg;
int ret;
cmdarg.status = status;
ret = commands_exec_sync(cmdbase, get_status, NULL, &cmdarg);
return ret;
}
/* --------------------------- Thread: httpd (DACP) ------------------------- */
/*
* 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_now_playing(uint32_t *id)
{
union player_arg cmdarg;
int ret;
cmdarg.id_ptr = id;
ret = commands_exec_sync(cmdbase, now_playing, NULL, &cmdarg);
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_pause(void)
{
int ret;
ret = commands_exec_sync(cmdbase, playback_pause, playback_pause_bh, NULL);
return ret;
}
int
player_playback_seek(int ms)
{
union player_arg cmdarg;
int ret;
cmdarg.intval = ms;
ret = commands_exec_sync(cmdbase, playback_pause, playback_seek_bh, &cmdarg);
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)
{
union player_arg cmdarg;
struct spk_enum spk_enum;
spk_enum.cb = cb;
spk_enum.arg = arg;
cmdarg.spk_enum = &spk_enum;
commands_exec_sync(cmdbase, speaker_enumerate, NULL, &cmdarg);
}
int
player_speaker_set(uint64_t *ids)
{
union player_arg cmdarg;
int ret;
cmdarg.speaker_set_param.device_ids = ids;
cmdarg.speaker_set_param.intval = 0;
ret = commands_exec_sync(cmdbase, speaker_set, NULL, &cmdarg);
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, NULL, &cmdarg);
return ret;
}
int
player_volume_setrel_speaker(uint64_t id, int relvol)
{
union player_arg cmdarg;
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;
}
cmdarg.vol_param.spk_id = id;
cmdarg.vol_param.volume = relvol;
ret = commands_exec_sync(cmdbase, volume_setrel_speaker, NULL, &cmdarg);
return ret;
}
int
player_volume_setabs_speaker(uint64_t id, int vol)
{
union player_arg cmdarg;
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;
}
cmdarg.vol_param.spk_id = id;
cmdarg.vol_param.volume = vol;
ret = commands_exec_sync(cmdbase, volume_setabs_speaker, NULL, &cmdarg);
return ret;
}
int
player_repeat_set(enum repeat_mode mode)
{
union player_arg cmdarg;
int ret;
cmdarg.mode = mode;
ret = commands_exec_sync(cmdbase, repeat_set, NULL, &cmdarg);
return ret;
}
int
player_shuffle_set(int enable)
{
union player_arg cmdarg;
int ret;
cmdarg.intval = enable;
ret = commands_exec_sync(cmdbase, shuffle_set, NULL, &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, NULL, &cmdarg);
return ret;
}
void
player_queue_clear_history()
{
commands_exec_sync(cmdbase, playerqueue_clear_history, NULL, 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;
}
static void
player_device_auth_kickoff(enum output_types type, 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 = type;
memcpy(cmdarg->auth.pin, arglist[0], 4);
commands_exec_async(cmdbase, device_auth_kickoff, cmdarg);
}
/* --------------------------- Thread: filescanner -------------------------- */
void
player_raop_verification_kickoff(char **arglist)
{
player_device_auth_kickoff(OUTPUT_TYPE_RAOP, arglist);
}
/* ---------------------------- Thread: worker ------------------------------ */
void
player_metadata_send(void *imd, void *omd)
{
union player_arg cmdarg;
cmdarg.metadata_param.input = imd;
cmdarg.metadata_param.output = omd;
commands_exec_sync(cmdbase, device_metadata_send, NULL, &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");
db_speaker_clear_all();
for (device = dev_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;
uint32_t rnd;
int ret;
player_exit = 0;
speaker_autoselect = cfg_getbool(cfg_getsec(cfg, "general"), "speaker_autoselect");
clear_queue_on_stop_disabled = cfg_getbool(cfg_getsec(cfg, "mpd"), "clear_queue_on_stop_disable");
dev_list = NULL;
master_volume = -1;
output_sessions = 0;
cur_playing = NULL;
cur_streaming = NULL;
cur_plid = 0;
cur_plversion = 0;
player_state = PLAY_STOPPED;
repeat = REPEAT_OFF;
shuffle = 0;
consume = 0;
history = (struct 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, &timer_res) < 0)
{
DPRINTF(E_LOG, L_PLAYER, "Could not get the system timer resolution.\n");
return -1;
}
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", timer_res.tv_nsec);
timer_res.tv_nsec = 2 * AIRTUNES_V2_STREAM_PERIOD;
}
// Set the tick interval for the playback timer
interval = MAX(timer_res.tv_nsec, AIRTUNES_V2_STREAM_PERIOD);
tick_interval.tv_nsec = interval;
pb_write_deficit_max = (PLAYER_WRITE_BEHIND_MAX * 1000000 / interval);
pb_read_deficit_max = (PLAYER_READ_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));
return -1;
}
// Random RTP time start
gcry_randomize(&rnd, sizeof(rnd), GCRY_STRONG_RANDOM);
last_rtptime = ((uint64_t)1 << 32) | rnd;
evbase_player = event_base_new();
if (!evbase_player)
{
DPRINTF(E_LOG, L_PLAYER, "Could not create an event base\n");
goto evbase_fail;
}
#ifdef HAVE_TIMERFD
pb_timer_ev = event_new(evbase_player, pb_timer_fd, EV_READ | EV_PERSIST, playback_cb, NULL);
#else
pb_timer_ev = event_new(evbase_player, SIGALRM, EV_SIGNAL | EV_PERSIST, playback_cb, NULL);
#endif
if (!pb_timer_ev)
{
DPRINTF(E_LOG, L_PLAYER, "Could not create playback timer event\n");
goto evnew_fail;
}
cmdbase = commands_base_new(evbase_player, NULL);
ret = outputs_init();
if (ret < 0)
{
DPRINTF(E_FATAL, L_PLAYER, "Output initiation failed\n");
goto outputs_fail;
}
ret = input_init();
if (ret < 0)
{
DPRINTF(E_FATAL, L_PLAYER, "Input initiation failed\n");
goto input_fail;
}
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 thread_fail;
}
#if defined(HAVE_PTHREAD_SETNAME_NP)
pthread_setname_np(tid_player, "player");
#elif defined(HAVE_PTHREAD_SET_NAME_NP)
pthread_set_name_np(tid_player, "player");
#endif
return 0;
thread_fail:
input_deinit();
input_fail:
outputs_deinit();
outputs_fail:
commands_base_free(cmdbase);
evnew_fail:
event_base_free(evbase_player);
evbase_fail:
#ifdef HAVE_TIMERFD
close(pb_timer_fd);
#else
timer_delete(pb_timer);
#endif
return -1;
}
void
player_deinit(void)
{
int ret;
player_playback_stop();
#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_base_free(evbase_player);
}
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