Hi, Guys.
I have to write a AVstream filter centric driver which should be installed as
a ks volumn filter. The filter has two pins-sink and source, and a internal
volumn node. I modify the code of avssamp. My target is to make such filter
graph available:
source filter--->volumn filter---->audio render filter(wave out device)
Using GraphEdit, I can connect a source filter with the volumn filter, but
failed to connect volumn filter with audio render filter with an error
0x80040217. If I directly connect source filter to audio render filter, they
can connect.
I I think my pin descripters are not very right. This is the two pin
descriptoer i wrote:
const
KSPIN_DESCRIPTOR_EX
CaptureFilterPinDescriptors [CAPTURE_FILTER_PIN_COUNT] =
{
{
&PinDispatch,
NULL,
{
NULL, // Interfaces (NULL, 0 == default)
0,
NULL, // Mediums (NULL, 0 == default)
0,
SIZEOF_ARRAY (PinDataRanges), // Range Count
PinDataRanges, // Ranges
KSPIN_DATAFLOW_IN, // Dataflow
KSPIN_COMMUNICATION_BOTH, // Communication
&KSCATEGORY_AUDIO, // Category
NULL, // Name
0 // Reserved
},
KSPIN_FLAG_FRAMES_NOT_REQUIRED_FOR_PROCESSING | // Flags
KSPIN_FLAG_DO_NOT_INITIATE_PROCESSING |
KSPIN_FLAG_PROCESS_IN_RUN_STATE_ONLY,
1, // Instances Possible
0, // Instances Necessary
&PinAllocatorFraming, // Allocator Framing
reinterpret_cast <PFNKSINTERSECTHANDLEREX>
(IntersectHandler)
},
{
&PinDispatch,
NULL,
{
NULL, // Interfaces (NULL, 0 == default)
0,
NULL, // Mediums (NULL, 0 == default)
0,
SIZEOF_ARRAY (PinDataRanges), // Range Count
PinDataRanges, // Ranges
KSPIN_DATAFLOW_OUT, // Dataflow
KSPIN_COMMUNICATION_BOTH, // Communication
&KSCATEGORY_AUDIO, // Category
&g_PINNAME_VIDEO_CAPTURE, // Name
0 // Reserved
},
KSPIN_FLAG_FRAMES_NOT_REQUIRED_FOR_PROCESSING | // Flags
KSPIN_FLAG_DO_NOT_INITIATE_PROCESSING |
KSPIN_FLAG_PROCESS_IN_RUN_STATE_ONLY,
1, // Instances Possible
0, // Instances Necessary
&PinAllocatorFraming, // Allocator Framing
reinterpret_cast <PFNKSINTERSECTHANDLEREX>
(IntersectHandler)
}
};
Any suggestion is appreciated!
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