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/*++
THIS CODE AND INFORMATION IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY
KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE
IMPLIED WARRANTIES OF MERCHANTABILITY AND/OR FITNESS FOR A PARTICULAR
PURPOSE.
Module Name:
CircuitHelper.cpp
Abstract:
This module contains helper functions for device.cpp and render.cpp files.
Environment:
Kernel mode
--*/
#include "private.h"
#include "CircuitHelper.h"
#ifndef __INTELLISENSE__
#include "CircuitHelper.tmh"
#endif
PAGED_CODE_SEG
NTSTATUS CreateRenderCircuit(
_In_ PACXCIRCUIT_INIT CircuitInit,
_In_ UNICODE_STRING CircuitName,
_In_ WDFDEVICE Device,
_Out_ ACXCIRCUIT* Circuit
)
{
PAGED_CODE();
NTSTATUS status = STATUS_SUCCESS;
WDF_OBJECT_ATTRIBUTES attributes;
WDF_OBJECT_ATTRIBUTES_INIT(&attributes);
WDF_OBJECT_ATTRIBUTES_INIT_CONTEXT_TYPE(&attributes, CODEC_RENDER_CIRCUIT_CONTEXT);
RETURN_NTSTATUS_IF_FAILED(AcxCircuitInitAssignName(CircuitInit, &CircuitName));
//
// Add circuit type.
//
AcxCircuitInitSetCircuitType(CircuitInit, AcxCircuitTypeRender);
//
// Assign the circuit's pnp-power callbacks.
//
{
ACX_CIRCUIT_PNPPOWER_CALLBACKS powerCallbacks;
ACX_CIRCUIT_PNPPOWER_CALLBACKS_INIT(&powerCallbacks);
powerCallbacks.EvtAcxCircuitPowerUp = CodecR_EvtCircuitPowerUp;
powerCallbacks.EvtAcxCircuitPowerDown = CodecR_EvtCircuitPowerDown;
AcxCircuitInitSetAcxCircuitPnpPowerCallbacks(CircuitInit, &powerCallbacks);
}
//
// Assign the circuit's composite callbacks.
//
{
ACX_CIRCUIT_COMPOSITE_CALLBACKS compositeCallbacks;
ACX_CIRCUIT_COMPOSITE_CALLBACKS_INIT(&compositeCallbacks);
compositeCallbacks.EvtAcxCircuitCompositeCircuitInitialize = CodecR_EvtCircuitCompositeCircuitInitialize;
compositeCallbacks.EvtAcxCircuitCompositeInitialize = CodecR_EvtCircuitCompositeInitialize;
AcxCircuitInitSetAcxCircuitCompositeCallbacks(CircuitInit, &compositeCallbacks);
}
//
// Set circuit-callbacks.
//
RETURN_NTSTATUS_IF_FAILED(AcxCircuitInitAssignAcxRequestPreprocessCallback(
CircuitInit,
CodecR_EvtCircuitRequestPreprocess,
(ACXCONTEXT)AcxRequestTypeAny, // dbg only
AcxRequestTypeAny,
NULL,
AcxItemIdNone));
RETURN_NTSTATUS_IF_FAILED(AcxCircuitInitAssignAcxCreateStreamCallback(
CircuitInit,
CodecR_EvtCircuitCreateStream));
//
// Create the circuit.
//
WDF_OBJECT_ATTRIBUTES_INIT_CONTEXT_TYPE(&attributes, CODEC_RENDER_CIRCUIT_CONTEXT);
RETURN_NTSTATUS_IF_FAILED(AcxCircuitCreate(Device, &attributes, &CircuitInit, Circuit));
return status;
}
PAGED_CODE_SEG
NTSTATUS ConnectRenderCircuitElements(
_In_ ULONG ElementCount,
_In_reads_(ElementCount) ACXELEMENT* Elements,
_In_ ACXCIRCUIT Circuit
)
{
PAGED_CODE();
NTSTATUS status = STATUS_SUCCESS;
//
// Explicitly connect the circuit/elements. Note that driver doens't
// need to perform this step when circuit/elements are connected in the
// same order as they were added to the circuit. By default ACX connects
// the elements starting from the sink circuit pin and ending with the
// source circuit pin for both render and capture devices.
//
// circuit.pin[default_sink] -> 1st element.pin[default_in]
// 1st element.pin[default_out] -> 2nd element.pin[default_in]
// 2nd element.pin[default_out] -> circuit.pin[default_source]
//
const int numElements = 2;
const int numConnections = numElements + 1;
ACX_CONNECTION connections[numConnections];
ACX_CONNECTION_INIT(&connections[0], Circuit, Elements[ElementCount - 2]);
ACX_CONNECTION_INIT(&connections[1], Elements[ElementCount - 2], Elements[ElementCount - 1]);
ACX_CONNECTION_INIT(&connections[2], Elements[ElementCount - 1], Circuit);
//
// Add the connections linking circuit to elements.
//
RETURN_NTSTATUS_IF_FAILED(AcxCircuitAddConnections(Circuit, connections, SIZEOF_ARRAY(connections)));
return status;
}
PAGED_CODE_SEG
NTSTATUS ObjBagAddBlob(
_In_ ACXOBJECTBAG ObjBag,
_In_z_ const char* Blob
)
{
PAGED_CODE();
NTSTATUS status = STATUS_SUCCESS;
DECLARE_CONST_ACXOBJECTBAG_SYSTEM_PROPERTY_NAME(VendorPropertiesBlock);
STRING vendorBlob;
RtlInitString(&vendorBlob, Blob);
WDFMEMORY vendorBlobMem;
RETURN_NTSTATUS_IF_FAILED(WdfMemoryCreatePreallocated(NULL, vendorBlob.Buffer, vendorBlob.MaximumLength, &vendorBlobMem));
RETURN_NTSTATUS_IF_FAILED(AcxObjectBagAddBlob(ObjBag, &VendorPropertiesBlock, vendorBlobMem));
WdfObjectDelete(vendorBlobMem);
return status;
}
PAGED_CODE_SEG
NTSTATUS ObjBagAddEndpointId(
_In_ ACXOBJECTBAG ObjBag,
_In_ UINT Value
)
{
PAGED_CODE();
NTSTATUS status = STATUS_SUCCESS;
DECLARE_CONST_ACXOBJECTBAG_SOUNDWIRE_PROPERTY_NAME(EndpointId);
RETURN_NTSTATUS_IF_FAILED(AcxObjectBagAddUI4(ObjBag, &EndpointId, Value));
return status;
}
PAGED_CODE_SEG
NTSTATUS ObjBagAddDataPortNumber(
_In_ ACXOBJECTBAG ObjBag,
_In_ UINT Value
)
{
PAGED_CODE();
NTSTATUS status = STATUS_SUCCESS;
DECLARE_CONST_ACXOBJECTBAG_SOUNDWIRE_PROPERTY_NAME(DataPortNumber);
RETURN_NTSTATUS_IF_FAILED(AcxObjectBagAddUI4(ObjBag, &DataPortNumber, Value));
return status;
}
PAGED_CODE_SEG
NTSTATUS ObjBagAddTestUI4(
_In_ ACXOBJECTBAG ObjBag,
_In_ UINT Value
)
{
PAGED_CODE();
NTSTATUS status = STATUS_SUCCESS;
DECLARE_CONST_ACXOBJECTBAG_DRIVER_PROPERTY_NAME(msft, TestUI4);
RETURN_NTSTATUS_IF_FAILED(AcxObjectBagAddUI4(ObjBag, &TestUI4, Value));
return status;
}
PAGED_CODE_SEG
NTSTATUS ObjBagAddCircuitId(
_In_ ACXOBJECTBAG ObjBag,
_In_ GUID Guid
)
{
PAGED_CODE();
NTSTATUS status = STATUS_SUCCESS;
DECLARE_CONST_ACXOBJECTBAG_DRIVER_PROPERTY_NAME(msft, CircuitId);
RETURN_NTSTATUS_IF_FAILED(AcxObjectBagAddGuid(ObjBag, &CircuitId, Guid));
return status;
}
PAGED_CODE_SEG
NTSTATUS ObjBagAddUnicodeStrings(
_In_ ACXOBJECTBAG ObjBag,
_In_ UNICODE_STRING FriendlyNameStr,
_In_ UNICODE_STRING NameStr
)
{
PAGED_CODE();
NTSTATUS status = STATUS_SUCCESS;
DECLARE_CONST_ACXOBJECTBAG_SYSTEM_PROPERTY_NAME(FriendlyName);
RETURN_NTSTATUS_IF_FAILED(AcxObjectBagAddUnicodeString(ObjBag, &FriendlyName, &FriendlyNameStr));
DECLARE_CONST_ACXOBJECTBAG_SYSTEM_PROPERTY_NAME(Name);
RETURN_NTSTATUS_IF_FAILED(AcxObjectBagAddUnicodeString(ObjBag, &Name, &NameStr));
return status;
}
PAGED_CODE_SEG
NTSTATUS AddJack(
_In_ WDF_OBJECT_ATTRIBUTES Attributes,
_In_ ACXPIN Pin,
_In_ ULONG ChannelMapping,
_In_ ULONG Color,
_In_ ACX_JACK_CONNECTION_TYPE ConnectionType,
_In_ ACX_JACK_GEO_LOCATION GeoLocation,
_In_ ACX_JACK_GEN_LOCATION GenLocation,
_In_ ACX_JACK_PORT_CONNECTION PortConnection
)
{
PAGED_CODE();
NTSTATUS status = STATUS_SUCCESS;
ACX_JACK_CONFIG jackCfg;
ACX_JACK_CONFIG_INIT(&jackCfg);
jackCfg.Description.ChannelMapping = ChannelMapping;
jackCfg.Description.Color = Color;
jackCfg.Description.ConnectionType = ConnectionType;
jackCfg.Description.GeoLocation = GeoLocation;
jackCfg.Description.GenLocation = GenLocation;
jackCfg.Description.PortConnection = PortConnection;
WDF_OBJECT_ATTRIBUTES_INIT_CONTEXT_TYPE(&Attributes, CODEC_JACK_CONTEXT);
Attributes.ParentObject = Pin;
ACXJACK jack;
RETURN_NTSTATUS_IF_FAILED(AcxJackCreate(Pin, &Attributes, &jackCfg, &jack));
ASSERT(jack != NULL);
PCODEC_JACK_CONTEXT jackCtx;
jackCtx = GetCodecJackContext(jack);
ASSERT(jackCtx);
jackCtx->Dummy = 0;
RETURN_NTSTATUS_IF_FAILED(AcxPinAddJacks(Pin, &jack, 1));
return status;
}
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