[wdmaudiodev] Re: wdmaudiodev Digest V8 #24
- From: "Dale Hill" <daleh@xxxxxxxxxxxxxxxxxxxxxxx>
- To: <wdmaudiodev@xxxxxxxxxxxxx>
- Date: Wed, 6 Apr 2011 06:49:50 -0600
Thanks for your help Tim.
-----Original Message-----
From: FreeLists Mailing List Manager [mailto:ecartis@xxxxxxxxxxxxx]
Sent: Tuesday, April 05, 2011 11:08 PM
To: wdmaudiodev digest users
Subject: wdmaudiodev Digest V8 #24
wdmaudiodev Digest Tue, 05 Apr 2011 Volume: 08 Issue: 024
In This Issue:
[wdmaudiodev] AVStream Audio Filter PIn Connection Problem
[wdmaudiodev] Re: AVStream Audio Filter PIn Connection Probl
----------------------------------------------------------------------
From: "Dale Hill" <daleh@xxxxxxxxxxxxxxxxxxxxxxx>
Subject: [wdmaudiodev] AVStream Audio Filter PIn Connection Problem
Date: Tue, 5 Apr 2011 10:32:04 -0600
All,
I'm developing an AVStream driver that supports two audio pins - one for
capture and one for rendering. To test, I am creating a filter graph with
two instances of the filter and then connecting the output of the first to
the input of the second. When I attempt to connect I am getting the error
message: "The filters cannot agree on a connection. Verify type connection
...." and the error is 0x80040217. I suspect that I don't have the
descriptors set up properly. Below is a list of all the descriptors. Could
someone please take a look to see what might be going wrong here?
Also, I notices that the filter is being created but the pins are not. Are
they only created when a connection is made?
TIA!
Descriptors:
// Filter Descriptors
//
// Pin Data Range
const
KSDATARANGE_AUDIO
FilterPinDataRange =
{
{
sizeof(KSDATARANGE_AUDIO), // Format Size
0, // Flags
0, // Sample Size
0, // Reserved
STATICGUIDOF(KSDATAFORMAT_TYPE_AUDIO), // Major Format
STATICGUIDOF(KSDATAFORMAT_SUBTYPE_PCM), // Format Sub Type
STATICGUIDOF(KSDATAFORMAT_SPECIFIER_WAVEFORMATEX), // Format
Specifier
},
MAX_AUDIO_CHANNELS, // Max Channels
BITS_PER_SAMPLE, // Max Bits per sample
BITS_PER_SAMPLE, // Min Bits per sample
MIN_SAMPLE_FREQ, // Min Sample Frequency
MAX_SAMPLE_FREQ // Max Sample Frequency
};
const
PKSDATARANGE
FilterPinDataRanges[1] = {(PKSDATARANGE)&FilterPinDataRange};
// Framing Requirements
DECLARE_SIMPLE_FRAMING_EX(
FilterPinAllocatorFraming, // Structure Name
STATICGUIDOF(KSMEMORY_TYPE_KERNEL_NONPAGED),// Memory Type
KSALLOCATOR_REQUIREMENTF_SYSTEM_MEMORY, // Flags
MAX_OUTSTANDING_FRAMES, // Frames Outstanding
1, // Alignment
FRAME_SIZE, // Min Frame Size
FRAME_SIZE); // Max Frame Size
// Capture Pin Dispatch Table
const
KSPIN_DISPATCH
FilterCapturePinDispatch =
{
CFilterCapturePin::DispatchCreate, // Pin Create
NULL, // Pin Close
CFilterCapturePin::DispatchProcess, // Pin Process
NULL, // Pin Reset
CFilterPin::DispatchSetFormat, // Pin Set Data Format
CFilterPin::DispatchSetState, // Pin Set Device State
NULL, // Pin Connect
NULL, // Pin Disconnect
NULL, // Clock Dispatch
NULL // Allocator Dispatch
};
// Render Pin Dispatch Table
const
KSPIN_DISPATCH
FilterRenderPinDispatch =
{
CFilterRenderPin::DispatchCreate, // Pin Create
NULL, // Pin Close
CFilterRenderPin::DispatchProcess, // Pin Process
NULL, // Pin Reset
CFilterPin::DispatchSetFormat, // Pin Set Data Format
CFilterPin::DispatchSetState, // Pin Set Device State
NULL, // Pin Connect
NULL, // Pin Disconnect
NULL, // Clock Dispatch
NULL // Allocator Dispatch
};
//
// Pin Descriptors
//
const
KSPIN_DESCRIPTOR_EX
FilterPinDescriptors[] =
{
// Render Pin
{
&FilterRenderPinDispatch, // Dispatch Table
NULL, // Automatic Table,
{ // KSPIN_DESCRIPTOR
0, // Interface Count
NULL, // Interfaces
0, // Media Count
NULL, // Media Types
SIZEOF_ARRAY(FilterPinDataRanges), // Data Range Count
FilterPinDataRanges, // Data Range
KSPIN_DATAFLOW_IN, // Data Flow,
KSPIN_COMMUNICATION_BOTH, // Communications
&KSCATEGORY_AUDIO, // Catagory GUID
&KSNODETYPE_LINE_CONNECTOR, // Pin name GUID
0 // Reserved
},
KSPIN_FLAG_DISPATCH_LEVEL_PROCESSING | // Flags
KSPIN_FLAG_DO_NOT_INITIATE_PROCESSING | //
KSPIN_FLAG_GENERATE_MAPPINGS | //
KSPIN_FLAG_USE_STANDARD_TRANSPORT | //
KSPIN_FLAG_RENDERER, //
MAX_RENDER_PINS, // Instances Possible
1, // Instances necessary
&FilterPinAllocatorFraming, // Frameing
NULL // Intersect Handler
},
// Capture Pin
{
&FilterCapturePinDispatch, // Dispatch Table
NULL, // Automatic Table,
{ // KSPIN_DESCRIPTOR
0, // Interface Count
NULL, // Interfaces
0, // Media Count
NULL, // Media Types
SIZEOF_ARRAY(FilterPinDataRanges), // Data Range Count
FilterPinDataRanges, // Data Ranges
KSPIN_DATAFLOW_OUT, // Data Flow,
KSPIN_COMMUNICATION_BOTH, // Communications
&KSCATEGORY_CAPTURE, // Catagory GUID
&KSNODETYPE_LINE_CONNECTOR, // Pin name GUID
0 // Reserved
},
KSPIN_FLAG_GENERATE_MAPPINGS | // Flags
KSPIN_FLAG_USE_STANDARD_TRANSPORT, //
MAX_CAPTURE_PINS, // Instances Possible
1, // Instances necessary
&FilterPinAllocatorFraming, // Frameing
NULL
}
};
// Filter Categories
const
GUID
FilterFilterCategories[2] =
{
STATICGUIDOF(KSCATEGORY_RENDER),
STATICGUIDOF(KSCATEGORY_CAPTURE)
};
// Filter Dispatch Table
const
KSFILTER_DISPATCH
FilterFilterDispatch =
{
CFilterAudioFilter::DispatchCreate, // Filter Create
NULL, // Filter Close
NULL, // Filter Process
NULL // Filter Reset
};
// Filter Descriptor
const
KSFILTER_DESCRIPTOR
FilterFilterDescriptor =
{
&FilterFilterDispatch, // Dispatch Table
NULL, // Automatic Table
KSFILTER_DESCRIPTOR_VERSION, // Version
0, // Flags
&KSNAME_Filter, // Reference GUID
DEFINE_KSFILTER_PIN_DESCRIPTORS(FilterPinDescriptors), // Pin
Count, Size, and Descriptor
DEFINE_KSFILTER_CATEGORIES(FilterFilterCategories), //
Catagory Count and catagories
DEFINE_KSFILTER_NODE_DESCRIPTORS_NULL, // Node Count, Size,
Descriptor
DEFINE_KSFILTER_DEFAULT_CONNECTIONS, // Connection Count and
Connections
NULL
};
//
// Device and filter Descriptors
//
// FilterFilterDescriptor:
//
// The filter descriptor for the Filter Filter.
DEFINE_KSFILTER_DESCRIPTOR_TABLE (FilterDescriptors)
{
&FilterFilterDescriptor
};
//
// FilterDeviceDispatch:
//
// This is the dispatch table for the Filter Device. Plug and play
// notifications as well as power management notifications are dispatched
// through this table.
//
const
KSDEVICE_DISPATCH
FilterDeviceDispatch =
{
CFilterVirtualSoundCard::DispatchAddDevice, // Pnp Add Device
CFilterVirtualSoundCard::DispatchStartDevice, // Pnp Start
NULL, // Post-Start
NULL, // Pnp Query Stop
NULL, // Pnp Cancel Stop
NULL, // Pnp Stop
NULL, // Pnp Query Remove
NULL, // Pnp Cancel Remove
NULL, // Pnp Remove
NULL, // Pnp Query
Capabilities
NULL, // Pnp Surprise
Removal
NULL, // Power Query Power
NULL, // Power Set Power
NULL // Pnp Query Interface
};
//
// FilterDeviceDescriptor:
//
// This is the device descriptor for the Filter Audio device. It
initializies
// the device's dispatch table.
//
const
KSDEVICE_DESCRIPTOR
FilterDeviceDescriptor = {
&FilterDeviceDispatch,
0,
NULL
};
------------------------------
Date: Tue, 5 Apr 2011 10:35:30 -0700
From: Tim Roberts <timr@xxxxxxxxx>
Subject: [wdmaudiodev] Re: AVStream Audio Filter PIn Connection Problem
Dale Hill wrote:
>
> All,
>
>
>
> I'm developing an AVStream driver that supports two audio pins - one
> for capture and one for rendering. To test, I am creating a filter
> graph with two instances of the filter and then connecting the output
> of the first to the input of the second. When I attempt to connect I
> am getting the error message: "The filters cannot agree on a
> connection. Verify type connection ...." and the error is 0x80040217.
> I suspect that I don't have the descriptors set up properly. Below is
> a list of all the descriptors. Could someone please take a look to see
> what might be going wrong here?
>
>
>
> Also, I notices that the filter is being created but the pins are not.
> Are they only created when a connection is made?
>
> ...
>
>
>
> //
>
> // Pin Descriptors
>
> //
>
> const
>
> KSPIN_DESCRIPTOR_EX
>
> FilterPinDescriptors[] =
>
> {...
>
> NULL // Intersect Handler
>
> },
>
I don't believe you can have a NULL intersect handler unless you have
KSDATAFORMAT_SPECIFIER_NONE, which is not the case for you. The
intersect handler gets called before the pin is created, so that could
be the root of the problem.
Right now, you have InstancesNecessary set to 1 on both pins. That
means BOTH of the filters will have a capture pin and a render pin, and
both pins will need to be connected before the graph can start. I think
you want InstancesNecessary set to 0.
--
Tim Roberts, timr@xxxxxxxxx
Providenza & Boekelheide, Inc.
------------------------------
End of wdmaudiodev Digest V8 #24
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