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wine
wine-winehq
Commits
828086ef
Commit
828086ef
authored
Nov 05, 2005
by
Davin McCall
Committed by
Alexandre Julliard
Nov 05, 2005
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Avoid getting ahead of dsound mixer when using non-hw device. Also
avoid using internal ALSA call to retrieve hardware play position.
parent
079e7cac
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73 additions
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49 deletions
+73
-49
audio.c
dlls/winmm/winealsa/audio.c
+73
-49
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dlls/winmm/winealsa/audio.c
View file @
828086ef
...
@@ -3011,6 +3011,10 @@ struct IDsDriverBufferImpl
...
@@ -3011,6 +3011,10 @@ struct IDsDriverBufferImpl
snd_pcm_uframes_t
mmap_buflen_frames
;
snd_pcm_uframes_t
mmap_buflen_frames
;
snd_pcm_channel_area_t
*
mmap_areas
;
snd_pcm_channel_area_t
*
mmap_areas
;
snd_async_handler_t
*
mmap_async_handler
;
snd_async_handler_t
*
mmap_async_handler
;
snd_pcm_uframes_t
mmap_ppos
;
/* play position */
/* Do we have a direct hardware buffer - SND_PCM_TYPE_HW? */
int
mmap_mode
;
};
};
static
void
DSDB_CheckXRUN
(
IDsDriverBufferImpl
*
pdbi
)
static
void
DSDB_CheckXRUN
(
IDsDriverBufferImpl
*
pdbi
)
...
@@ -3037,86 +3041,77 @@ static void DSDB_CheckXRUN(IDsDriverBufferImpl* pdbi)
...
@@ -3037,86 +3041,77 @@ static void DSDB_CheckXRUN(IDsDriverBufferImpl* pdbi)
}
}
}
}
static
void
DSDB_MMAPCopy
(
IDsDriverBufferImpl
*
pdbi
)
static
void
DSDB_MMAPCopy
(
IDsDriverBufferImpl
*
pdbi
,
int
mul
)
{
{
WINE_WAVEDEV
*
wwo
=
&
(
WOutDev
[
pdbi
->
drv
->
wDevID
]);
WINE_WAVEDEV
*
wwo
=
&
(
WOutDev
[
pdbi
->
drv
->
wDevID
]);
unsigned
int
channels
;
snd_pcm_format_t
format
;
snd_pcm_uframes_t
period_size
;
snd_pcm_uframes_t
period_size
;
snd_pcm_sframes_t
avail
;
snd_pcm_sframes_t
avail
;
int
err
;
int
err
;
int
dir
=
0
;
int
dir
=
0
;
const
snd_pcm_channel_area_t
*
areas
;
snd_pcm_uframes_t
ofs
;
snd_pcm_uframes_t
frames
;
snd_pcm_uframes_t
wanted
;
if
(
!
pdbi
->
mmap_buffer
||
!
wwo
->
hw_params
||
!
wwo
->
pcm
)
if
(
!
pdbi
->
mmap_buffer
||
!
wwo
->
hw_params
||
!
wwo
->
pcm
)
return
;
return
;
err
=
snd_pcm_hw_params_get_channels
(
wwo
->
hw_params
,
&
channels
);
err
=
snd_pcm_hw_params_get_format
(
wwo
->
hw_params
,
&
format
);
dir
=
0
;
err
=
snd_pcm_hw_params_get_period_size
(
wwo
->
hw_params
,
&
period_size
,
&
dir
);
err
=
snd_pcm_hw_params_get_period_size
(
wwo
->
hw_params
,
&
period_size
,
&
dir
);
avail
=
snd_pcm_avail_update
(
wwo
->
pcm
);
avail
=
snd_pcm_avail_update
(
wwo
->
pcm
);
DSDB_CheckXRUN
(
pdbi
);
DSDB_CheckXRUN
(
pdbi
);
TRACE
(
"avail=%d
format=%s channels=%d
\n
"
,
(
int
)
avail
,
snd_pcm_format_name
(
format
),
channels
);
TRACE
(
"avail=%d
, mul=%d
\n
"
,
(
int
)
avail
,
mul
);
while
(
avail
>=
period_size
)
frames
=
pdbi
->
mmap_buflen_frames
;
{
const
snd_pcm_channel_area_t
*
areas
;
snd_pcm_uframes_t
ofs
;
snd_pcm_uframes_t
frames
;
int
err
;
frames
=
avail
/
period_size
*
period_size
;
/* round down to a multiple of period_size */
EnterCriticalSection
(
&
pdbi
->
mmap_crst
);
EnterCriticalSection
(
&
pdbi
->
mmap_crst
);
/* we want to commit the given number of periods, or the whole lot */
wanted
=
mul
==
0
?
frames
:
period_size
*
2
;
snd_pcm_mmap_begin
(
wwo
->
pcm
,
&
areas
,
&
ofs
,
&
frames
);
snd_pcm_mmap_begin
(
wwo
->
pcm
,
&
areas
,
&
ofs
,
&
frames
);
if
(
areas
!=
pdbi
->
mmap_areas
||
areas
->
addr
!=
pdbi
->
mmap_areas
->
addr
)
if
(
areas
!=
pdbi
->
mmap_areas
||
areas
->
addr
!=
pdbi
->
mmap_areas
->
addr
)
FIXME
(
"Can't access sound driver's buffer directly.
\n
"
);
FIXME
(
"Can't access sound driver's buffer directly.
\n
"
);
err
=
snd_pcm_mmap_commit
(
wwo
->
pcm
,
ofs
,
frames
);
LeaveCriticalSection
(
&
pdbi
->
mmap_crst
);
if
(
err
!=
(
snd_pcm_sframes_t
)
frames
)
ERR
(
"mmap partially failed.
\n
"
);
avail
=
snd_pcm_avail_update
(
wwo
->
pcm
);
/* mark our current play position */
}
pdbi
->
mmap_ppos
=
ofs
;
if
(
avail
>
0
)
{
const
snd_pcm_channel_area_t
*
areas
;
snd_pcm_uframes_t
ofs
;
snd_pcm_uframes_t
frames
;
int
err
;
frames
=
avail
;
if
(
frames
>
wanted
)
frames
=
wanted
;
EnterCriticalSection
(
&
pdbi
->
mmap_crst
);
err
=
snd_pcm_mmap_commit
(
wwo
->
pcm
,
ofs
,
frames
);
/* Check to make sure we committed all we want to commit. ALSA
* only gives a contiguous linear region, so we need to check this
* in case we've reached the end of the buffer, in which case we
* can wrap around back to the beginning. */
if
(
frames
<
wanted
)
{
frames
=
wanted
-=
frames
;
snd_pcm_mmap_begin
(
wwo
->
pcm
,
&
areas
,
&
ofs
,
&
frames
);
snd_pcm_mmap_begin
(
wwo
->
pcm
,
&
areas
,
&
ofs
,
&
frames
);
if
(
areas
!=
pdbi
->
mmap_areas
||
areas
->
addr
!=
pdbi
->
mmap_areas
->
addr
)
snd_pcm_mmap_commit
(
wwo
->
pcm
,
ofs
,
frames
);
FIXME
(
"Can't access sound driver's buffer directly.
\n
"
);
}
err
=
snd_pcm_mmap_commit
(
wwo
->
pcm
,
ofs
,
frames
);
LeaveCriticalSection
(
&
pdbi
->
mmap_crst
);
LeaveCriticalSection
(
&
pdbi
->
mmap_crst
);
if
(
err
!=
(
snd_pcm_sframes_t
)
frames
)
ERR
(
"mmap partially failed.
\n
"
);
avail
=
snd_pcm_avail_update
(
wwo
->
pcm
);
}
}
}
static
void
DSDB_PCMCallback
(
snd_async_handler_t
*
ahandler
)
static
void
DSDB_PCMCallback
(
snd_async_handler_t
*
ahandler
)
{
{
int
periods
;
/* snd_pcm_t * handle = snd_async_handler_get_pcm(ahandler); */
/* snd_pcm_t * handle = snd_async_handler_get_pcm(ahandler); */
IDsDriverBufferImpl
*
pdbi
=
snd_async_handler_get_callback_private
(
ahandler
);
IDsDriverBufferImpl
*
pdbi
=
snd_async_handler_get_callback_private
(
ahandler
);
TRACE
(
"callback called
\n
"
);
TRACE
(
"callback called
\n
"
);
DSDB_MMAPCopy
(
pdbi
);
/* Commit another block (the entire buffer if it's a direct hw buffer) */
periods
=
pdbi
->
mmap_mode
==
SND_PCM_TYPE_HW
?
0
:
1
;
DSDB_MMAPCopy
(
pdbi
,
periods
);
}
}
/**
* Allocate the memory-mapped buffer for direct sound, and set up the
* callback.
*/
static
int
DSDB_CreateMMAP
(
IDsDriverBufferImpl
*
pdbi
)
static
int
DSDB_CreateMMAP
(
IDsDriverBufferImpl
*
pdbi
)
{
{
WINE_WAVEDEV
*
wwo
=
&
(
WOutDev
[
pdbi
->
drv
->
wDevID
]);
WINE_WAVEDEV
*
wwo
=
&
(
WOutDev
[
pdbi
->
drv
->
wDevID
]);
...
@@ -3134,7 +3129,14 @@ static int DSDB_CreateMMAP(IDsDriverBufferImpl* pdbi)
...
@@ -3134,7 +3129,14 @@ static int DSDB_CreateMMAP(IDsDriverBufferImpl* pdbi)
err
=
snd_pcm_hw_params_get_channels
(
wwo
->
hw_params
,
&
channels
);
err
=
snd_pcm_hw_params_get_channels
(
wwo
->
hw_params
,
&
channels
);
bits_per_sample
=
snd_pcm_format_physical_width
(
format
);
bits_per_sample
=
snd_pcm_format_physical_width
(
format
);
bits_per_frame
=
bits_per_sample
*
channels
;
bits_per_frame
=
bits_per_sample
*
channels
;
pdbi
->
mmap_mode
=
snd_pcm_type
(
wwo
->
pcm
);
if
(
pdbi
->
mmap_mode
==
SND_PCM_TYPE_HW
)
{
TRACE
(
"mmap'd buffer is a hardware buffer.
\n
"
);
}
else
{
TRACE
(
"mmap'd buffer is an ALSA emulation of hardware buffer.
\n
"
);
}
if
(
TRACE_ON
(
wave
))
if
(
TRACE_ON
(
wave
))
ALSA_TraceParameters
(
wwo
->
hw_params
,
NULL
,
FALSE
);
ALSA_TraceParameters
(
wwo
->
hw_params
,
NULL
,
FALSE
);
...
@@ -3286,6 +3288,7 @@ static HRESULT WINAPI IDsDriverBufferImpl_GetPosition(PIDSDRIVERBUFFER iface,
...
@@ -3286,6 +3288,7 @@ static HRESULT WINAPI IDsDriverBufferImpl_GetPosition(PIDSDRIVERBUFFER iface,
WINE_WAVEDEV
*
wwo
=
&
(
WOutDev
[
This
->
drv
->
wDevID
]);
WINE_WAVEDEV
*
wwo
=
&
(
WOutDev
[
This
->
drv
->
wDevID
]);
snd_pcm_uframes_t
hw_ptr
;
snd_pcm_uframes_t
hw_ptr
;
snd_pcm_uframes_t
period_size
;
snd_pcm_uframes_t
period_size
;
snd_pcm_state_t
state
;
int
dir
;
int
dir
;
int
err
;
int
err
;
...
@@ -3299,14 +3302,16 @@ static HRESULT WINAPI IDsDriverBufferImpl_GetPosition(PIDSDRIVERBUFFER iface,
...
@@ -3299,14 +3302,16 @@ static HRESULT WINAPI IDsDriverBufferImpl_GetPosition(PIDSDRIVERBUFFER iface,
DSDB_CheckXRUN
(
This
);
DSDB_CheckXRUN
(
This
);
EnterCriticalSection
(
&
This
->
mmap_crst
);
EnterCriticalSection
(
&
This
->
mmap_crst
);
/* FIXME: snd_pcm_mmap_hw_ptr() should not be accessed by a user app. */
hw_ptr
=
This
->
mmap_ppos
;
/* It will NOT return what why want anyway. */
hw_ptr
=
_snd_pcm_mmap_hw_ptr
(
wwo
->
pcm
);
state
=
snd_pcm_state
(
wwo
->
pcm
);
if
(
hw_ptr
>=
period_size
)
hw_ptr
-=
period_size
;
else
hw_ptr
=
0
;
if
(
state
!=
SND_PCM_STATE_RUNNING
)
hw_ptr
=
0
;
if
(
lpdwPlay
)
if
(
lpdwPlay
)
*
lpdwPlay
=
snd_pcm_frames_to_bytes
(
wwo
->
pcm
,
hw_ptr
/
period_size
*
period_size
)
%
This
->
mmap_buflen_bytes
;
*
lpdwPlay
=
snd_pcm_frames_to_bytes
(
wwo
->
pcm
,
hw_ptr
)
%
This
->
mmap_buflen_bytes
;
if
(
lpdwWrite
)
if
(
lpdwWrite
)
*
lpdwWrite
=
snd_pcm_frames_to_bytes
(
wwo
->
pcm
,
(
hw_ptr
/
period_size
+
1
)
*
period_size
)
%
This
->
mmap_buflen_bytes
;
*
lpdwWrite
=
snd_pcm_frames_to_bytes
(
wwo
->
pcm
,
hw_ptr
+
period_size
*
2
)
%
This
->
mmap_buflen_bytes
;
LeaveCriticalSection
(
&
This
->
mmap_crst
);
LeaveCriticalSection
(
&
This
->
mmap_crst
);
TRACE
(
"hw_ptr=0x%08x, playpos=%ld, writepos=%ld
\n
"
,
(
unsigned
int
)
hw_ptr
,
lpdwPlay
?*
lpdwPlay
:-
1
,
lpdwWrite
?*
lpdwWrite
:-
1
);
TRACE
(
"hw_ptr=0x%08x, playpos=%ld, writepos=%ld
\n
"
,
(
unsigned
int
)
hw_ptr
,
lpdwPlay
?*
lpdwPlay
:-
1
,
lpdwWrite
?*
lpdwWrite
:-
1
);
...
@@ -3332,7 +3337,26 @@ static HRESULT WINAPI IDsDriverBufferImpl_Play(PIDSDRIVERBUFFER iface, DWORD dwR
...
@@ -3332,7 +3337,26 @@ static HRESULT WINAPI IDsDriverBufferImpl_Play(PIDSDRIVERBUFFER iface, DWORD dwR
}
}
if
(
state
==
SND_PCM_STATE_PREPARED
)
if
(
state
==
SND_PCM_STATE_PREPARED
)
{
{
DSDB_MMAPCopy
(
This
);
/* If we have a direct hardware buffer, we can commit the whole lot
* immediately (periods = 0), otherwise we prime the queue with only
* 2 periods.
*
* Why 2? We want a small number so that we don't get ahead of the
* DirectSound mixer. But we don't want to ever let the buffer get
* completely empty - having 2 periods gives us time to commit another
* period when the first expires.
*
* The potential for buffer underrun is high, but that's the reality
* of using a translated buffer (the whole point of DirectSound is
* to provide direct access to the hardware).
*
* A better implementation would use the buffer Lock() and Unlock()
* methods to determine how far ahead we can commit, and to rewind if
* necessary.
*/
int
periods
=
This
->
mmap_mode
==
SND_PCM_TYPE_HW
?
0
:
2
;
DSDB_MMAPCopy
(
This
,
periods
);
err
=
snd_pcm_start
(
wwo
->
pcm
);
err
=
snd_pcm_start
(
wwo
->
pcm
);
}
}
return
DS_OK
;
return
DS_OK
;
...
...
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