| Author |
Message |
cbest
Guest
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 Posted:
Sat Oct 09, 2004 6:57 pm Post subject:
DirectShow DMO's Accessing effect properties |
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Is there anyone who can explain how to access individual effect properties
from a DMO filter wrapper in DirectShow. I have created an application using
Direct show filter graphs. I can add audio effects to the filter graph with a
DMO wrapper and display and manipulate the effects properties through the
property page. I have been unable to find any documentation on accessing the
individual effect properties through the DMO wrapper. I need to save the
effect properties and reassign them to another effect in a new audio track.
There is an example of how to save effects properties through direct sound
but this doesn't apply to a filter graph. Any input on this subject would be
greatly appreciated
--
Take Care,
cbest
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Iain
Guest
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| Posted:
Sun Oct 10, 2004 7:02 pm Post subject:
Re: DirectShow DMO's Accessing effect properties |
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On Sat, 9 Oct 2004 07:57:02 -0700, cbest wrote:
| Quote: | Is there anyone who can explain how to access individual effect properties
from a DMO filter wrapper in DirectShow. I have created an application using
Direct show filter graphs. I can add audio effects to the filter graph with a
DMO wrapper and display and manipulate the effects properties through the
property page. I have been unable to find any documentation on accessing the
individual effect properties through the DMO wrapper. I need to save the
effect properties and reassign them to another effect in a new audio track.
There is an example of how to save effects properties through direct sound
but this doesn't apply to a filter graph. Any input on this subject would be
greatly appreciated
|
It is fairly well hidden, actually in the Direct Sound section of docs.
See 'Using Effects' THe parameters and interfaces to control them are
defined there or thereabouts.
It does work on the DMOs in DIrect Show, just QI on the DMO wrapper filter
for such as IDirectSoundFXGargle8 and go from there.
Iain |
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cbest
Guest
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| Posted:
Tue Oct 12, 2004 6:07 pm Post subject:
Re: DirectShow DMO's Accessing effect properties |
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Iain
Last week I tried QI with IDD_IDirectSoundFXChorus8. I was getting link
errors so I added dsound.lib, strmiids.lib and dmoguids.lib to no avail. I
tried again today and added dxguid.lib which resolved the errors. Thanks for
keeping me pointed in the right direction.
Thake care...
cbest
"Iain" wrote:
| Quote: | On Sat, 9 Oct 2004 07:57:02 -0700, cbest wrote:
Is there anyone who can explain how to access individual effect properties
from a DMO filter wrapper in DirectShow. I have created an application using
Direct show filter graphs. I can add audio effects to the filter graph with a
DMO wrapper and display and manipulate the effects properties through the
property page. I have been unable to find any documentation on accessing the
individual effect properties through the DMO wrapper. I need to save the
effect properties and reassign them to another effect in a new audio track.
There is an example of how to save effects properties through direct sound
but this doesn't apply to a filter graph. Any input on this subject would be
greatly appreciated
It is fairly well hidden, actually in the Direct Sound section of docs.
See 'Using Effects' THe parameters and interfaces to control them are
defined there or thereabouts.
It does work on the DMOs in DIrect Show, just QI on the DMO wrapper filter
for such as IDirectSoundFXGargle8 and go from there.
Iain
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