[Bug 10001] New: Lack of hardware mixing

http://bugs.winehq.org/show_bug.cgi?id=10001

Summary: Lack of hardware mixing
           Product: Wine
           Version: unspecified
          Platform: Other
        OS/Version: other
            Status: NEW
          Severity: enhancement
          Priority: P2
         Component: wine-directx-dsound
        AssignedTo: [e-mail]
        ReportedBy: [e-mail]

Directsound properly plays most games correctly but there is no support for
hardware mixing. Various cards support it through Alsa. Support for this would
reduce latency and improve audio quality. Further multiple audio channels can
be supported on such cards more efficiently.

[Bug 10001] Lack of hardware mixing

http://bugs.winehq.org/show_bug.cgi?id=10001

--- Comment #1 from Austin English   2008-04-15 01:36:28 ---
Is this still an issue in current (0.9.59 or newer) wine?

[Bug 10001] Lack of hardware mixing

http://bugs.winehq.org/show_bug.cgi?id=10001

--- Comment #2 from Roderick Colenbrander   2008-04-15 04:05:52 ---
It is a fundamental bug in our dsound + winmm, we don't offer this at all.

[Bug 10001] Lack of hardware mixing

http://bugs.winehq.org/show_bug.cgi?id=10001

--- Comment #3 from Austin English   2008-10-23 15:11:16 ---
WONTFIX?

[Bug 10001] Lack of hardware mixing

http://bugs.winehq.org/show_bug.cgi?id=10001

--- Comment #4 from Roderick Colenbrander   2008-10-23 16:11:09 ---
This is something which should be fixed. We should offer more channels than
stereo on cards which offer hw mixing this should at least be doable using good
sound quality.

[Bug 10001] Lack of hardware mixing

http://bugs.winehq.org/show_bug.cgi?id=10001

Austin English  changed:

What    |Removed                     |Added
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                 CC|                            |[e-mail]

[Bug 10001] Lack of hardware mixing

http://bugs.winehq.org/show_bug.cgi?id=10001

Austin English  changed:

What    |Removed                     |Added
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           Keywords|                            |download, hardware,
                   |                            |integration

[Bug 10001] Lack of hardware mixing

http://bugs.winehq.org/show_bug.cgi?id=10001

Raymond  changed:

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--- Comment #5 from Raymond   2010-03-13 20:33:56 ---
there are a number of sound cards which support hardware mixing  (e.g. emu10k1
, trident , ymfpci , cs46xx , au88x0 .... )

do any wine developer has any hardware mixing sound cards ?

[Bug 10001] Lack of hardware mixing

http://bugs.winehq.org/show_bug.cgi?id=10001

--- Comment #6 from Raymond   2010-04-27 22:22:13 ---
(In reply to comment #3)
> WONTFIX?

http://www.alsa-project.org/alsa-doc/alsa-lib/group___p_c_m.html

The configuration is chosen fixing single parameters in this order: first
access, first format, first subformat, min channels, min rate, min period time,
max buffer size, min tick time

he hardware parameters cannot be changed when the stream is running (active)

http://www.alsa-project.org/alsa-doc/alsa-lib/pcm.html

The ALSA PCM devices use the parameter refining system for hardware parameters
- snd_pcm_hw_params_t. It means, that application choose the full-range of
configurations at first and then application sets single parameters until all
parameters are elementary (definite).

The major problem is the period size , buffer size or period time and buffer
time are finalised only after snd_pcm_hw_params()

i.e. the function snd_pcm_hw_params_get_period_size() should not be called
before snd_pcm_hw_params()

snd_pcm_hw_params_set_periods_integer(pcm, hw_params);
    snd_pcm_hw_params_set_buffer_time_near(pcm, hw_params, &buffer_time, NULL);
    buffer_time = 10000;
    snd_pcm_hw_params_set_period_time_near(pcm, hw_params, &buffer_time, NULL);

err = snd_pcm_hw_params_get_period_size(hw_params, &psize, NULL);
    buffer_time = 16;
    snd_pcm_hw_params_set_periods_near(pcm, hw_params, &buffer_time, NULL);

[Bug 10001] Lack of hardware mixing

http://bugs.winehq.org/show_bug.cgi?id=10001

[e-mail] changed:

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                 CC|                            |[e-mail]

--- Comment #7 from [e-mail] 2012-05-17 15:01:09 CDT ---
This bug has not been updated for four years. Is this still an issue i current
(1.5.4) or newer wine ? You may also close this as abandoned if you feel that
that this is issue is no longer relevant to you.

[Bug 10001] Lack of hardware mixing

http://bugs.winehq.org/show_bug.cgi?id=10001

Michael Stefaniuc  changed:

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--- Comment #8 from Michael Stefaniuc  2012-09-13 07:02:35 CDT ---
With the changes in the audio subsystem in Wine as well as upstream in Windows
all is software mixed now. And most soundcards out there do not support
hardware mixing anymore. I vote to close this as WONTFIX (or ABANDONED).

[Bug 10001] Lack of hardware mixing

http://bugs.winehq.org/show_bug.cgi?id=10001

Michael Stefaniuc  changed:

What    |Removed                     |Added
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             Status|NEW                         |RESOLVED
         Resolution|                            |WONTFIX

--- Comment #9 from Michael Stefaniuc  2012-09-13 08:08:59 CDT ---
WONTFIX after cross checking with Andrew Eikum on irc.

[Bug 10001] Lack of hardware mixing

http://bugs.winehq.org/show_bug.cgi?id=10001

Austin English  changed:

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             Status|RESOLVED                    |CLOSED

--- Comment #10 from Austin English  2012-09-18 19:07:46 CDT ---
Closing.