92d74d4a78
When seeking into a new song, and the decoder for the new song fails to start up, MPD forgot to send the "command_finished" signal to the main thread.
735 lines
16 KiB
C
735 lines
16 KiB
C
/* the Music Player Daemon (MPD)
|
|
* Copyright (C) 2003-2007 by Warren Dukes (warren.dukes@gmail.com)
|
|
* This project's homepage is: http://www.musicpd.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
|
|
*/
|
|
|
|
#include "player_thread.h"
|
|
#include "player_control.h"
|
|
#include "decoder_control.h"
|
|
#include "decoder_thread.h"
|
|
#include "output_all.h"
|
|
#include "pcm_volume.h"
|
|
#include "path.h"
|
|
#include "event_pipe.h"
|
|
#include "crossfade.h"
|
|
#include "song.h"
|
|
#include "tag.h"
|
|
#include "pipe.h"
|
|
#include "chunk.h"
|
|
#include "idle.h"
|
|
#include "main.h"
|
|
#include "buffer.h"
|
|
|
|
#include <glib.h>
|
|
|
|
#undef G_LOG_DOMAIN
|
|
#define G_LOG_DOMAIN "player_thread"
|
|
|
|
enum xfade_state {
|
|
XFADE_DISABLED = -1,
|
|
XFADE_UNKNOWN = 0,
|
|
XFADE_ENABLED = 1
|
|
};
|
|
|
|
struct player {
|
|
struct music_pipe *pipe;
|
|
|
|
/**
|
|
* are we waiting for buffered_before_play?
|
|
*/
|
|
bool buffering;
|
|
|
|
/**
|
|
* true if the decoder is starting and did not provide data
|
|
* yet
|
|
*/
|
|
bool decoder_starting;
|
|
|
|
/**
|
|
* is the player paused?
|
|
*/
|
|
bool paused;
|
|
|
|
/**
|
|
* is there a new song in pc.next_song?
|
|
*/
|
|
bool queued;
|
|
|
|
/**
|
|
* the song currently being played
|
|
*/
|
|
struct song *song;
|
|
|
|
/**
|
|
* is cross fading enabled?
|
|
*/
|
|
enum xfade_state xfade;
|
|
|
|
/**
|
|
* has cross-fading begun?
|
|
*/
|
|
bool cross_fading;
|
|
|
|
/**
|
|
* The number of chunks used for crossfading.
|
|
*/
|
|
unsigned cross_fade_chunks;
|
|
|
|
/**
|
|
* The current audio format for the audio outputs.
|
|
*/
|
|
struct audio_format play_audio_format;
|
|
|
|
/**
|
|
* Coefficient for converting a PCM buffer size into a time
|
|
* span.
|
|
*/
|
|
double size_to_time;
|
|
};
|
|
|
|
static struct music_buffer *player_buffer;
|
|
|
|
static void player_command_finished(void)
|
|
{
|
|
assert(pc.command != PLAYER_COMMAND_NONE);
|
|
|
|
pc.command = PLAYER_COMMAND_NONE;
|
|
notify_signal(&main_notify);
|
|
}
|
|
|
|
static void
|
|
player_dc_stop(struct player *player)
|
|
{
|
|
dc_stop(&pc.notify);
|
|
|
|
if (dc.pipe != NULL) {
|
|
music_pipe_clear(dc.pipe, player_buffer);
|
|
|
|
if (dc.pipe != player->pipe)
|
|
music_pipe_free(dc.pipe);
|
|
|
|
dc.pipe = NULL;
|
|
}
|
|
}
|
|
|
|
static void player_stop_decoder(void)
|
|
{
|
|
dc_stop(&pc.notify);
|
|
pc.state = PLAYER_STATE_STOP;
|
|
event_pipe_emit(PIPE_EVENT_PLAYLIST);
|
|
}
|
|
|
|
static bool
|
|
player_wait_for_decoder(struct player *player)
|
|
{
|
|
dc_command_wait(&pc.notify);
|
|
|
|
if (decoder_has_failed()) {
|
|
assert(dc.next_song == NULL || dc.next_song->url != NULL);
|
|
pc.errored_song = dc.next_song;
|
|
pc.error = PLAYER_ERROR_FILE;
|
|
pc.next_song = NULL;
|
|
player->queued = false;
|
|
return false;
|
|
}
|
|
|
|
pc.total_time = pc.next_song->tag != NULL
|
|
? pc.next_song->tag->time : 0;
|
|
pc.bit_rate = 0;
|
|
audio_format_clear(&pc.audio_format);
|
|
|
|
player->song = pc.next_song;
|
|
pc.next_song = NULL;
|
|
pc.elapsed_time = 0;
|
|
player->queued = false;
|
|
player->decoder_starting = true;
|
|
|
|
/* call syncPlaylistWithQueue() in the main thread */
|
|
event_pipe_emit(PIPE_EVENT_PLAYLIST);
|
|
|
|
return true;
|
|
}
|
|
|
|
static bool
|
|
player_check_decoder_startup(struct player *player)
|
|
{
|
|
assert(player->decoder_starting);
|
|
|
|
if (decoder_has_failed()) {
|
|
/* the decoder failed */
|
|
assert(dc.next_song == NULL || dc.next_song->url != NULL);
|
|
|
|
pc.errored_song = dc.next_song;
|
|
pc.error = PLAYER_ERROR_FILE;
|
|
|
|
return false;
|
|
} else if (!decoder_is_starting()) {
|
|
/* the decoder is ready and ok */
|
|
|
|
if (audio_format_defined(&player->play_audio_format) &&
|
|
audio_output_all_check() > 0) {
|
|
/* the output devices havn't finished playing
|
|
all chunks yet - wait for that */
|
|
|
|
/* XXX synchronize in a better way */
|
|
g_usleep(1000);
|
|
return true;
|
|
}
|
|
|
|
player->decoder_starting = false;
|
|
|
|
if (!player->paused &&
|
|
!audio_output_all_open(&dc.out_audio_format,
|
|
player_buffer)) {
|
|
char *uri = song_get_uri(dc.next_song);
|
|
g_warning("problems opening audio device "
|
|
"while playing \"%s\"", uri);
|
|
g_free(uri);
|
|
|
|
assert(dc.next_song == NULL || dc.next_song->url != NULL);
|
|
pc.errored_song = dc.next_song;
|
|
pc.error = PLAYER_ERROR_AUDIO;
|
|
return false;
|
|
}
|
|
|
|
pc.total_time = dc.total_time;
|
|
pc.audio_format = dc.in_audio_format;
|
|
player->play_audio_format = dc.out_audio_format;
|
|
player->size_to_time =
|
|
audioFormatSizeToTime(&dc.out_audio_format);
|
|
|
|
return true;
|
|
} else {
|
|
/* the decoder is not yet ready; wait
|
|
some more */
|
|
notify_wait(&pc.notify);
|
|
|
|
return true;
|
|
}
|
|
}
|
|
|
|
static bool player_seek_decoder(struct player *player)
|
|
{
|
|
double where;
|
|
bool ret;
|
|
|
|
assert(pc.next_song != NULL);
|
|
|
|
if (decoder_current_song() != pc.next_song) {
|
|
player_dc_stop(player);
|
|
|
|
music_pipe_clear(player->pipe, player_buffer);
|
|
dc.pipe = player->pipe;
|
|
dc_start_async(pc.next_song);
|
|
|
|
ret = player_wait_for_decoder(player);
|
|
if (!ret) {
|
|
player_command_finished();
|
|
return false;
|
|
}
|
|
} else {
|
|
pc.next_song = NULL;
|
|
player->queued = false;
|
|
}
|
|
|
|
where = pc.seek_where;
|
|
if (where > pc.total_time)
|
|
where = pc.total_time - 0.1;
|
|
if (where < 0.0)
|
|
where = 0.0;
|
|
|
|
ret = dc_seek(&pc.notify, where);
|
|
if (!ret) {
|
|
player_command_finished();
|
|
return false;
|
|
}
|
|
|
|
pc.elapsed_time = where;
|
|
player_command_finished();
|
|
|
|
player->xfade = XFADE_UNKNOWN;
|
|
|
|
/* abort buffering when the user has requested
|
|
a seek */
|
|
player->buffering = false;
|
|
|
|
audio_output_all_cancel();
|
|
|
|
return true;
|
|
}
|
|
|
|
static void player_process_command(struct player *player)
|
|
{
|
|
switch (pc.command) {
|
|
case PLAYER_COMMAND_NONE:
|
|
case PLAYER_COMMAND_PLAY:
|
|
case PLAYER_COMMAND_STOP:
|
|
case PLAYER_COMMAND_EXIT:
|
|
case PLAYER_COMMAND_CLOSE_AUDIO:
|
|
break;
|
|
|
|
case PLAYER_COMMAND_QUEUE:
|
|
assert(pc.next_song != NULL);
|
|
assert(!player->queued);
|
|
assert(dc.pipe == NULL || dc.pipe == player->pipe);
|
|
|
|
player->queued = true;
|
|
player_command_finished();
|
|
break;
|
|
|
|
case PLAYER_COMMAND_PAUSE:
|
|
player->paused = !player->paused;
|
|
if (player->paused) {
|
|
audio_output_all_pause();
|
|
pc.state = PLAYER_STATE_PAUSE;
|
|
} else {
|
|
if (audio_output_all_open(NULL, player_buffer)) {
|
|
pc.state = PLAYER_STATE_PLAY;
|
|
} else {
|
|
assert(dc.next_song == NULL || dc.next_song->url != NULL);
|
|
pc.errored_song = dc.next_song;
|
|
pc.error = PLAYER_ERROR_AUDIO;
|
|
|
|
player->paused = true;
|
|
}
|
|
}
|
|
player_command_finished();
|
|
break;
|
|
|
|
case PLAYER_COMMAND_SEEK:
|
|
player_seek_decoder(player);
|
|
break;
|
|
|
|
case PLAYER_COMMAND_CANCEL:
|
|
if (pc.next_song == NULL) {
|
|
/* the cancel request arrived too later, we're
|
|
already playing the queued song... stop
|
|
everything now */
|
|
pc.command = PLAYER_COMMAND_STOP;
|
|
return;
|
|
}
|
|
|
|
if (dc.pipe != NULL && dc.pipe != player->pipe) {
|
|
/* the decoder is already decoding the song -
|
|
stop it and reset the position */
|
|
player_dc_stop(player);
|
|
dc_stop(&pc.notify);
|
|
}
|
|
|
|
pc.next_song = NULL;
|
|
player->queued = false;
|
|
player_command_finished();
|
|
break;
|
|
}
|
|
}
|
|
|
|
static bool
|
|
play_chunk(struct song *song, struct music_chunk *chunk,
|
|
const struct audio_format *format, double sizeToTime)
|
|
{
|
|
bool success;
|
|
|
|
assert(music_chunk_check_format(chunk, format));
|
|
|
|
pc.elapsed_time = chunk->times;
|
|
pc.bit_rate = chunk->bit_rate;
|
|
|
|
if (chunk->tag != NULL) {
|
|
if (!song_is_file(song)) {
|
|
/* always update the tag of remote streams */
|
|
struct tag *old_tag = song->tag;
|
|
|
|
song->tag = tag_dup(chunk->tag);
|
|
|
|
if (old_tag != NULL)
|
|
tag_free(old_tag);
|
|
|
|
/* the main thread will update the playlist
|
|
version when he receives this event */
|
|
event_pipe_emit(PIPE_EVENT_TAG);
|
|
|
|
/* notify all clients that the tag of the
|
|
current song has changed */
|
|
idle_add(IDLE_PLAYER);
|
|
}
|
|
}
|
|
|
|
success = pcm_volume(chunk->data, chunk->length,
|
|
format, pc.software_volume);
|
|
if (!success) {
|
|
g_warning("pcm_volume() failed on %u:%u:%u",
|
|
format->sample_rate, format->bits, format->channels);
|
|
pc.errored_song = dc.current_song;
|
|
pc.error = PLAYER_ERROR_AUDIO;
|
|
return false;
|
|
}
|
|
|
|
if (!audio_output_all_play(chunk)) {
|
|
pc.errored_song = dc.current_song;
|
|
pc.error = PLAYER_ERROR_AUDIO;
|
|
return false;
|
|
}
|
|
|
|
pc.total_play_time += sizeToTime * chunk->length;
|
|
return true;
|
|
}
|
|
|
|
/**
|
|
* Obtains the next chunk from the music pipe, optionally applies
|
|
* cross-fading, and sends it to all audio outputs.
|
|
*
|
|
* @return true on success, false on error (playback will be stopped)
|
|
*/
|
|
static bool
|
|
play_next_chunk(struct player *player)
|
|
{
|
|
struct music_chunk *chunk = NULL;
|
|
unsigned cross_fade_position;
|
|
bool success;
|
|
|
|
if (audio_output_all_check() >= 64) {
|
|
/* the output pipe is still large
|
|
enough, don't send another chunk */
|
|
|
|
/* XXX synchronize in a better way */
|
|
g_usleep(1000);
|
|
return true;
|
|
}
|
|
|
|
if (player->xfade == XFADE_ENABLED &&
|
|
dc.pipe != NULL && dc.pipe != player->pipe &&
|
|
(cross_fade_position = music_pipe_size(player->pipe))
|
|
<= player->cross_fade_chunks) {
|
|
/* perform cross fade */
|
|
struct music_chunk *other_chunk =
|
|
music_pipe_shift(dc.pipe);
|
|
|
|
if (!player->cross_fading) {
|
|
/* beginning of the cross fade
|
|
- adjust crossFadeChunks
|
|
which might be bigger than
|
|
the remaining number of
|
|
chunks in the old song */
|
|
player->cross_fade_chunks = cross_fade_position;
|
|
player->cross_fading = true;
|
|
}
|
|
|
|
if (other_chunk != NULL) {
|
|
chunk = music_pipe_shift(player->pipe);
|
|
assert(chunk != NULL);
|
|
|
|
cross_fade_apply(chunk, other_chunk,
|
|
&dc.out_audio_format,
|
|
cross_fade_position,
|
|
player->cross_fade_chunks);
|
|
music_buffer_return(player_buffer, other_chunk);
|
|
} else {
|
|
/* there are not enough
|
|
decoded chunks yet */
|
|
if (decoder_is_idle()) {
|
|
/* the decoder isn't
|
|
running, abort
|
|
cross fading */
|
|
player->xfade = XFADE_DISABLED;
|
|
} else {
|
|
/* wait for the
|
|
decoder */
|
|
notify_signal(&dc.notify);
|
|
notify_wait(&pc.notify);
|
|
|
|
return true;
|
|
}
|
|
}
|
|
}
|
|
|
|
if (chunk == NULL)
|
|
chunk = music_pipe_shift(player->pipe);
|
|
|
|
assert(chunk != NULL);
|
|
|
|
/* play the current chunk */
|
|
|
|
success = play_chunk(player->song, chunk, &player->play_audio_format,
|
|
player->size_to_time);
|
|
|
|
if (!success) {
|
|
music_buffer_return(player_buffer, chunk);
|
|
return false;
|
|
}
|
|
|
|
/* this formula should prevent that the
|
|
decoder gets woken up with each chunk; it
|
|
is more efficient to make it decode a
|
|
larger block at a time */
|
|
if (!decoder_is_idle() &&
|
|
music_pipe_size(dc.pipe) <= (pc.buffered_before_play +
|
|
music_buffer_size(player_buffer) * 3) / 4)
|
|
notify_signal(&dc.notify);
|
|
|
|
return true;
|
|
}
|
|
|
|
/**
|
|
* This is called at the border between two songs: the audio output
|
|
* has consumed all chunks of the current song, and we should start
|
|
* sending chunks from the next one.
|
|
*
|
|
* @return true on success, false on error (playback will be stopped)
|
|
*/
|
|
static bool
|
|
player_song_border(struct player *player)
|
|
{
|
|
player->xfade = XFADE_UNKNOWN;
|
|
|
|
music_pipe_free(player->pipe);
|
|
player->pipe = dc.pipe;
|
|
|
|
if (!player_wait_for_decoder(player))
|
|
return false;
|
|
|
|
return true;
|
|
}
|
|
|
|
static void do_play(void)
|
|
{
|
|
struct player player = {
|
|
.buffering = true,
|
|
.decoder_starting = false,
|
|
.paused = false,
|
|
.queued = false,
|
|
.song = NULL,
|
|
.xfade = XFADE_UNKNOWN,
|
|
.cross_fading = false,
|
|
.cross_fade_chunks = 0,
|
|
.size_to_time = 0.0,
|
|
};
|
|
|
|
player.pipe = music_pipe_new();
|
|
|
|
dc.buffer = player_buffer;
|
|
dc.pipe = player.pipe;
|
|
dc_start(&pc.notify, pc.next_song);
|
|
if (!player_wait_for_decoder(&player)) {
|
|
player_stop_decoder();
|
|
player_command_finished();
|
|
music_pipe_free(player.pipe);
|
|
return;
|
|
}
|
|
|
|
pc.elapsed_time = 0;
|
|
pc.state = PLAYER_STATE_PLAY;
|
|
player_command_finished();
|
|
|
|
while (true) {
|
|
player_process_command(&player);
|
|
if (pc.command == PLAYER_COMMAND_STOP ||
|
|
pc.command == PLAYER_COMMAND_EXIT ||
|
|
pc.command == PLAYER_COMMAND_CLOSE_AUDIO) {
|
|
audio_output_all_cancel();
|
|
break;
|
|
}
|
|
|
|
if (player.buffering) {
|
|
if (music_pipe_size(player.pipe) < pc.buffered_before_play &&
|
|
!decoder_is_idle()) {
|
|
/* not enough decoded buffer space yet */
|
|
notify_wait(&pc.notify);
|
|
continue;
|
|
} else {
|
|
/* buffering is complete */
|
|
player.buffering = false;
|
|
}
|
|
}
|
|
|
|
if (player.decoder_starting) {
|
|
bool success;
|
|
|
|
success = player_check_decoder_startup(&player);
|
|
if (!success)
|
|
break;
|
|
continue;
|
|
}
|
|
|
|
#ifndef NDEBUG
|
|
/*
|
|
music_pipe_check_format(&play_audio_format,
|
|
player.next_song_chunk,
|
|
&dc.out_audio_format);
|
|
*/
|
|
#endif
|
|
|
|
if (decoder_is_idle() && player.queued) {
|
|
/* the decoder has finished the current song;
|
|
make it decode the next song */
|
|
assert(pc.next_song != NULL);
|
|
assert(dc.pipe == NULL || dc.pipe == player.pipe);
|
|
|
|
player.queued = false;
|
|
dc.pipe = music_pipe_new();
|
|
dc_start_async(pc.next_song);
|
|
}
|
|
|
|
if (dc.pipe != NULL && dc.pipe != player.pipe &&
|
|
player.xfade == XFADE_UNKNOWN &&
|
|
!decoder_is_starting()) {
|
|
/* enable cross fading in this song? if yes,
|
|
calculate how many chunks will be required
|
|
for it */
|
|
player.cross_fade_chunks =
|
|
cross_fade_calc(pc.cross_fade_seconds, dc.total_time,
|
|
&dc.out_audio_format,
|
|
&player.play_audio_format,
|
|
music_buffer_size(player_buffer) -
|
|
pc.buffered_before_play);
|
|
if (player.cross_fade_chunks > 0) {
|
|
player.xfade = XFADE_ENABLED;
|
|
player.cross_fading = false;
|
|
} else
|
|
/* cross fading is disabled or the
|
|
next song is too short */
|
|
player.xfade = XFADE_DISABLED;
|
|
}
|
|
|
|
if (player.paused)
|
|
notify_wait(&pc.notify);
|
|
else if (music_pipe_size(player.pipe) > 0) {
|
|
/* at least one music chunk is ready - send it
|
|
to the audio output */
|
|
|
|
if (!play_next_chunk(&player))
|
|
break;
|
|
} else if (audio_output_all_check() > 0) {
|
|
/* not enough data from decoder, but the
|
|
output thread is still busy, so it's
|
|
okay */
|
|
|
|
/* XXX synchronize in a better way */
|
|
g_usleep(10000);
|
|
} else if (dc.pipe != NULL && dc.pipe != player.pipe) {
|
|
/* at the beginning of a new song */
|
|
|
|
if (!player_song_border(&player))
|
|
break;
|
|
} else if (decoder_is_idle()) {
|
|
break;
|
|
} else {
|
|
/* the decoder is too busy and hasn't provided
|
|
new PCM data in time: send silence (if the
|
|
output pipe is empty) */
|
|
struct music_chunk *chunk;
|
|
size_t frame_size =
|
|
audio_format_frame_size(&player.play_audio_format);
|
|
/* this formula ensures that we don't send
|
|
partial frames */
|
|
unsigned num_frames = CHUNK_SIZE / frame_size;
|
|
|
|
chunk = music_buffer_allocate(player_buffer);
|
|
if (chunk == NULL)
|
|
continue;
|
|
|
|
#ifndef NDEBUG
|
|
chunk->audio_format = player.play_audio_format;
|
|
#endif
|
|
|
|
chunk->length = num_frames * frame_size;
|
|
memset(chunk->data, 0, chunk->length);
|
|
|
|
/*DEBUG("waiting for decoded audio, play silence\n");*/
|
|
if (!audio_output_all_play(chunk)) {
|
|
music_buffer_return(player_buffer, chunk);
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
if (player.queued) {
|
|
assert(pc.next_song != NULL);
|
|
pc.next_song = NULL;
|
|
}
|
|
|
|
player_stop_decoder();
|
|
|
|
if (dc.pipe != NULL && dc.pipe != player.pipe) {
|
|
music_pipe_clear(dc.pipe, player_buffer);
|
|
music_pipe_free(dc.pipe);
|
|
}
|
|
|
|
music_pipe_clear(player.pipe, player_buffer);
|
|
music_pipe_free(player.pipe);
|
|
}
|
|
|
|
static gpointer player_task(G_GNUC_UNUSED gpointer arg)
|
|
{
|
|
decoder_thread_start();
|
|
|
|
player_buffer = music_buffer_new(pc.buffer_chunks);
|
|
|
|
while (1) {
|
|
switch (pc.command) {
|
|
case PLAYER_COMMAND_PLAY:
|
|
case PLAYER_COMMAND_QUEUE:
|
|
assert(pc.next_song != NULL);
|
|
|
|
do_play();
|
|
break;
|
|
|
|
case PLAYER_COMMAND_STOP:
|
|
audio_output_all_cancel();
|
|
/* fall through */
|
|
|
|
case PLAYER_COMMAND_SEEK:
|
|
case PLAYER_COMMAND_PAUSE:
|
|
pc.next_song = NULL;
|
|
player_command_finished();
|
|
break;
|
|
|
|
case PLAYER_COMMAND_CLOSE_AUDIO:
|
|
audio_output_all_close();
|
|
player_command_finished();
|
|
break;
|
|
|
|
case PLAYER_COMMAND_EXIT:
|
|
dc_quit();
|
|
audio_output_all_close();
|
|
music_buffer_free(player_buffer);
|
|
player_command_finished();
|
|
g_thread_exit(NULL);
|
|
break;
|
|
|
|
case PLAYER_COMMAND_CANCEL:
|
|
pc.next_song = NULL;
|
|
player_command_finished();
|
|
break;
|
|
|
|
case PLAYER_COMMAND_NONE:
|
|
notify_wait(&pc.notify);
|
|
break;
|
|
}
|
|
}
|
|
return NULL;
|
|
}
|
|
|
|
void player_create(void)
|
|
{
|
|
GError *e = NULL;
|
|
|
|
assert(pc.thread == NULL);
|
|
|
|
pc.thread = g_thread_create(player_task, NULL, true, &e);
|
|
if (pc.thread == NULL)
|
|
g_error("Failed to spawn player task: %s", e->message);
|
|
}
|