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101 Mar 19, 2009 at 10:40

i am also developing the Virtual audio driver.
my main goal is to capture sound from one PC and transfer to an other PC in order to do that i am modifiy msvad->Simple code for capting the sound. this is because i want to create a virtual sound card driver inorder to capture the sound played on a remote PC which has no Phasical sound card.

the simple logic is sound—>MSVAD—>mysoftware—>network stream.

when i capture sound form MSVAD. i get clicking sound the orignal sound.
and there is also click sound recorded form “windows sound recorder”

i think that this driver is only for render the sound. i have seen CopyTo and CopyFrom which is empty these are as follow.

//=============================================================================
STDMETHODIMP_(void)
(
IN  PVOID                   Destination,
IN  PVOID                   Source,
IN  ULONG                   ByteCount
/*++

Routine Description:

The CopyTo function copies sample data to the DMA buffer.
Callers of CopyTo can run at any IRQL.

Arguments:

Destination - Points to the destination buffer.

Source - Points to the source buffer

ByteCount - Number of bytes to be copied

Return Value:

void

--*/
)
{
m_SaveData.WriteData((PBYTE) Source, ByteCount);
} // CopyTo


and copyFrom is

//=============================================================================
STDMETHODIMP_(void)
(
IN  PVOID                   Destination,
IN  PVOID                   Source,
IN  ULONG                   ByteCount
)
/*++

Routine Description:

The CopyFrom function copies sample data from the DMA buffer.
Callers of CopyFrom can run at any IRQL

Arguments:

Destination - Points to the destination buffer.

Source - Points to the source buffer.

ByteCount - Points to the source buffer.

Return Value:

void

--*/
{
} // CopyFrom