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Иван Мажукин
mpd
Commits
9d51bd39
Commit
9d51bd39
authored
Oct 12, 2008
by
Max Kellermann
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Plain Diff
player: added struct player
The player struct holds the local variables which used to be passed to all those helper functions in player_thread.c.
parent
2fcbabf4
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1 changed file
with
75 additions
and
48 deletions
+75
-48
player_thread.c
src/player_thread.c
+75
-48
No files found.
src/player_thread.c
View file @
9d51bd39
...
...
@@ -33,6 +33,36 @@ enum xfade_state {
XFADE_ENABLED
=
1
};
struct
player
{
/**
* number of chunks which have to be decoded before playing
* starts
*/
unsigned
int
buffered_before_play
;
/**
* true if the decoder is starting and did not provide data
* yet
*/
bool
decoder_starting
;
/**
* is the player paused?
*/
bool
paused
;
/**
* is cross fading enabled?
*/
enum
xfade_state
xfade
;
/**
* index of the first chunk of the next song, -1 if there is
* no next song
*/
int
next_song_chunk
;
};
static
void
player_command_finished
(
void
)
{
assert
(
pc
.
command
!=
PLAYER_COMMAND_NONE
);
...
...
@@ -49,7 +79,7 @@ static void quitDecode(void)
wakeup_main_task
();
}
static
int
waitOnDecode
(
int
*
decodeWaitedOn
)
static
int
waitOnDecode
(
struct
player
*
player
)
{
dc_command_wait
(
&
pc
.
notify
);
...
...
@@ -64,22 +94,22 @@ static int waitOnDecode(int *decodeWaitedOn)
?
pc
.
next_song
->
tag
->
time
:
0
;
pc
.
bitRate
=
0
;
audio_format_clear
(
&
pc
.
audio_format
);
*
decodeWaitedOn
=
1
;
player
->
decoder_starting
=
true
;
return
0
;
}
static
int
decodeSeek
(
int
*
decodeWaitedOn
,
int
*
next
)
static
int
decodeSeek
(
struct
player
*
player
)
{
int
ret
=
-
1
;
double
where
;
if
(
decoder_current_song
()
!=
pc
.
next_song
)
{
dc_stop
(
&
pc
.
notify
);
*
next
=
-
1
;
player
->
next_song_chunk
=
-
1
;
ob_clear
();
dc_start_async
(
pc
.
next_song
);
waitOnDecode
(
decodeWaitedOn
);
waitOnDecode
(
player
);
}
where
=
pc
.
seekWhere
;
...
...
@@ -97,10 +127,7 @@ static int decodeSeek(int *decodeWaitedOn, int *next)
return
ret
;
}
static
void
processDecodeInput
(
int
*
pause_r
,
unsigned
int
*
bbp_r
,
enum
xfade_state
*
do_xfade_r
,
int
*
decodeWaitedOn_r
,
int
*
next_r
)
static
void
processDecodeInput
(
struct
player
*
player
)
{
switch
(
pc
.
command
)
{
case
PLAYER_COMMAND_NONE
:
...
...
@@ -121,8 +148,10 @@ static void processDecodeInput(int *pause_r, unsigned int *bbp_r,
break
;
case
PLAYER_COMMAND_PAUSE
:
*
pause_r
=
!*
pause_r
;
if
(
*
pause_r
)
{
player
->
paused
=
!
player
->
paused
;
if
(
player
->
paused
)
{
dropBufferedAudio
();
audio_output_pause_all
();
pc
.
state
=
PLAYER_STATE_PAUSE
;
}
else
{
if
(
openAudioDevice
(
NULL
)
>=
0
)
{
...
...
@@ -135,23 +164,17 @@ static void processDecodeInput(int *pause_r, unsigned int *bbp_r,
ERROR
(
"problems opening audio device "
"while playing
\"
%s
\"\n
"
,
song_get_url
(
dc
.
next_song
,
tmp
));
*
pause_r
=
-
1
;
player
->
paused
=
true
;
}
}
player_command_finished
();
if
(
*
pause_r
==
-
1
)
{
*
pause_r
=
1
;
}
else
if
(
*
pause_r
)
{
dropBufferedAudio
();
audio_output_pause_all
();
}
break
;
case
PLAYER_COMMAND_SEEK
:
dropBufferedAudio
();
if
(
decodeSeek
(
decodeWaitedOn_r
,
next_
r
)
==
0
)
{
*
do_xfade_r
=
XFADE_UNKNOWN
;
*
bbp_r
=
0
;
if
(
decodeSeek
(
playe
r
)
==
0
)
{
player
->
xfade
=
XFADE_UNKNOWN
;
player
->
buffered_before_play
=
0
;
}
break
;
}
...
...
@@ -176,25 +199,26 @@ static int playChunk(ob_chunk * chunk,
static
void
do_play
(
void
)
{
int
do_pause
=
0
;
struct
player
player
=
{
.
buffered_before_play
=
pc
.
buffered_before_play
,
.
decoder_starting
=
false
,
.
paused
=
false
,
.
xfade
=
XFADE_UNKNOWN
,
.
next_song_chunk
=
-
1
,
};
int
buffering
=
1
;
unsigned
int
bbp
=
pc
.
buffered_before_play
;
enum
xfade_state
do_xfade
=
XFADE_UNKNOWN
;
unsigned
int
crossFadeChunks
=
0
;
/** the position of the next cross-faded chunk in the next
song */
int
nextChunk
=
0
;
int
decodeWaitedOn
=
0
;
static
const
char
silence
[
CHUNK_SIZE
];
double
sizeToTime
=
0
.
0
;
/** the position of the first chunk in the next song */
int
next
=
-
1
;
ob_clear
();
ob_set_lazy
(
false
);
dc_start
(
&
pc
.
notify
,
pc
.
next_song
);
if
(
waitOnDecode
(
&
decodeWaitedOn
)
<
0
)
{
if
(
waitOnDecode
(
&
player
)
<
0
)
{
quitDecode
();
return
;
}
...
...
@@ -204,8 +228,7 @@ static void do_play(void)
player_command_finished
();
while
(
1
)
{
processDecodeInput
(
&
do_pause
,
&
bbp
,
&
do_xfade
,
&
decodeWaitedOn
,
&
next
);
processDecodeInput
(
&
player
);
if
(
pc
.
command
==
PLAYER_COMMAND_STOP
||
pc
.
command
==
PLAYER_COMMAND_EXIT
||
pc
.
command
==
PLAYER_COMMAND_CLOSE_AUDIO
)
{
...
...
@@ -214,7 +237,7 @@ static void do_play(void)
}
if
(
buffering
)
{
if
(
ob_available
()
<
bbp
)
{
if
(
ob_available
()
<
player
.
buffered_before_play
)
{
/* not enough decoded buffer space yet */
notify_wait
(
&
pc
.
notify
);
continue
;
...
...
@@ -225,7 +248,7 @@ static void do_play(void)
}
}
if
(
decodeWaitedOn
)
{
if
(
player
.
decoder_starting
)
{
if
(
dc
.
error
!=
DECODE_ERROR_NOERROR
)
{
/* the decoder failed */
assert
(
dc
.
next_song
==
NULL
||
dc
.
next_song
->
url
!=
NULL
);
...
...
@@ -235,7 +258,7 @@ static void do_play(void)
}
else
if
(
!
decoder_is_starting
())
{
/* the decoder is ready and ok */
decodeWaitedOn
=
0
;
player
.
decoder_starting
=
false
;
if
(
openAudioDevice
(
&
(
ob
.
audioFormat
))
<
0
)
{
char
tmp
[
MPD_PATH_MAX
];
assert
(
dc
.
next_song
==
NULL
||
dc
.
next_song
->
url
!=
NULL
);
...
...
@@ -247,7 +270,7 @@ static void do_play(void)
break
;
}
if
(
do_pause
)
{
if
(
player
.
paused
)
{
dropBufferedAudio
();
closeAudioDevice
();
}
...
...
@@ -268,12 +291,13 @@ static void do_play(void)
pc
.
queueLockState
==
PLAYER_QUEUE_UNLOCKED
)
{
/* the decoder has finished the current song;
make it decode the next song */
next
=
ob
.
end
;
player
.
next_song_chunk
=
ob
.
end
;
dc_start_async
(
pc
.
next_song
);
pc
.
queueState
=
PLAYER_QUEUE_DECODE
;
wakeup_main_task
();
}
if
(
next
>=
0
&&
do_xfade
==
XFADE_UNKNOWN
&&
if
(
player
.
next_song_chunk
>=
0
&&
player
.
xfade
==
XFADE_UNKNOWN
&&
!
decoder_is_starting
())
{
/* enable cross fading in this song? if yes,
calculate how many chunks will be required
...
...
@@ -284,21 +308,23 @@ static void do_play(void)
ob
.
size
-
pc
.
buffered_before_play
);
if
(
crossFadeChunks
>
0
)
{
do_
xfade
=
XFADE_ENABLED
;
player
.
xfade
=
XFADE_ENABLED
;
nextChunk
=
-
1
;
}
else
/* cross fading is disabled or the
next song is too short */
do_
xfade
=
XFADE_DISABLED
;
player
.
xfade
=
XFADE_DISABLED
;
}
if
(
do_pause
)
if
(
player
.
paused
)
notify_wait
(
&
pc
.
notify
);
else
if
(
!
ob_is_empty
()
&&
(
int
)
ob
.
begin
!=
next
)
{
else
if
(
!
ob_is_empty
()
&&
(
int
)
ob
.
begin
!=
player
.
next_song_chunk
)
{
ob_chunk
*
beginChunk
=
ob_get_chunk
(
ob
.
begin
);
unsigned
int
fadePosition
;
if
(
do_xfade
==
XFADE_ENABLED
&&
next
>=
0
&&
(
fadePosition
=
ob_relative
(
next
))
if
(
player
.
xfade
==
XFADE_ENABLED
&&
player
.
next_song_chunk
>=
0
&&
(
fadePosition
=
ob_relative
(
player
.
next_song_chunk
))
<=
crossFadeChunks
)
{
/* perform cross fade */
if
(
nextChunk
<
0
)
{
...
...
@@ -324,7 +350,7 @@ static void do_play(void)
/* the decoder isn't
running, abort
cross fading */
do_
xfade
=
XFADE_DISABLED
;
player
.
xfade
=
XFADE_DISABLED
;
}
else
{
/* wait for the
decoder */
...
...
@@ -347,17 +373,18 @@ static void do_play(void)
larger block at a time */
if
(
ob_available
()
<=
(
pc
.
buffered_before_play
+
ob
.
size
*
3
)
/
4
)
notify_signal
(
&
dc
.
notify
);
}
else
if
(
!
ob_is_empty
()
&&
(
int
)
ob
.
begin
==
next
)
{
}
else
if
(
!
ob_is_empty
()
&&
(
int
)
ob
.
begin
==
player
.
next_song_chunk
)
{
/* at the beginning of a new song */
if
(
do_
xfade
==
XFADE_ENABLED
&&
nextChunk
>=
0
)
{
if
(
player
.
xfade
==
XFADE_ENABLED
&&
nextChunk
>=
0
)
{
/* the cross-fade is finished; skip
the section which was cross-faded
(and thus already played) */
ob_skip
(
crossFadeChunks
);
}
do_
xfade
=
XFADE_UNKNOWN
;
player
.
xfade
=
XFADE_UNKNOWN
;
/* wait for a signal from the playlist */
if
(
pc
.
queueState
==
PLAYER_QUEUE_DECODE
||
...
...
@@ -368,8 +395,8 @@ static void do_play(void)
if
(
pc
.
queueState
!=
PLAYER_QUEUE_PLAY
)
break
;
next
=
-
1
;
if
(
waitOnDecode
(
&
decodeWaitedOn
)
<
0
)
player
.
next_song_chunk
=
-
1
;
if
(
waitOnDecode
(
&
player
)
<
0
)
return
;
pc
.
queueState
=
PLAYER_QUEUE_EMPTY
;
...
...
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