1 files changed, 446 insertions, 0 deletions
diff --git a/audio/simpleaudiosample/Source/Utilities/hw.cpp b/audio/simpleaudiosample/Source/Utilities/hw.cpp
new file mode 100644
index 00000000..133bcc99
--- /dev/null
+++ b/audio/simpleaudiosample/Source/Utilities/hw.cpp
@@ -0,0 +1,446 @@
+/*++
+
+Copyright (c)  Microsoft Corporation All Rights Reserved
+
+Module Name:
+
+    hw.cpp
+
+Abstract:
+
+    Implementation of Simple Audio Sample HW class. 
+    Simple Audio Sample HW has an array for storing mixer and volume settings
+    for the topology.
+--*/
+#include "definitions.h"
+#include "hw.h"
+
+//=============================================================================
+// CSimpleAudioSampleHW
+//=============================================================================
+
+//=============================================================================
+#pragma code_seg("PAGE")
+CSimpleAudioSampleHW::CSimpleAudioSampleHW()
+: m_ulMux(0),
+    m_bDevSpecific(FALSE),
+    m_iDevSpecific(0),
+    m_uiDevSpecific(0)
+/*++
+
+Routine Description:
+
+    Constructor for SimpleAudioSampleHW. 
+
+Arguments:
+
+Return Value:
+
+    void
+
+--*/
+{
+    PAGED_CODE();
+    
+    MixerReset();
+} // SimpleAudioSampleHW
+#pragma code_seg()
+
+
+//=============================================================================
+BOOL
+CSimpleAudioSampleHW::bGetDevSpecific()
+/*++
+
+Routine Description:
+
+  Gets the HW (!) Device Specific info
+
+Arguments:
+
+  N/A
+
+Return Value:
+
+  True or False (in this example).
+
+--*/
+{
+    return m_bDevSpecific;
+} // bGetDevSpecific
+
+//=============================================================================
+void
+CSimpleAudioSampleHW::bSetDevSpecific
+(
+    _In_  BOOL                bDevSpecific
+)
+/*++
+
+Routine Description:
+
+  Sets the HW (!) Device Specific info
+
+Arguments:
+
+  fDevSpecific - true or false for this example.
+
+Return Value:
+
+    void
+
+--*/
+{
+    m_bDevSpecific = bDevSpecific;
+} // bSetDevSpecific
+
+//=============================================================================
+INT
+CSimpleAudioSampleHW::iGetDevSpecific()
+/*++
+
+Routine Description:
+
+  Gets the HW (!) Device Specific info
+
+Arguments:
+
+  N/A
+
+Return Value:
+
+  int (in this example).
+
+--*/
+{
+    return m_iDevSpecific;
+} // iGetDevSpecific
+
+//=============================================================================
+void
+CSimpleAudioSampleHW::iSetDevSpecific
+(
+    _In_  INT                 iDevSpecific
+)
+/*++
+
+Routine Description:
+
+  Sets the HW (!) Device Specific info
+
+Arguments:
+
+  fDevSpecific - true or false for this example.
+
+Return Value:
+
+    void
+
+--*/
+{
+    m_iDevSpecific = iDevSpecific;
+} // iSetDevSpecific
+
+//=============================================================================
+UINT
+CSimpleAudioSampleHW::uiGetDevSpecific()
+/*++
+
+Routine Description:
+
+  Gets the HW (!) Device Specific info
+
+Arguments:
+
+  N/A
+
+Return Value:
+
+  UINT (in this example).
+
+--*/
+{
+    return m_uiDevSpecific;
+} // uiGetDevSpecific
+
+//=============================================================================
+void
+CSimpleAudioSampleHW::uiSetDevSpecific
+(
+    _In_  UINT                uiDevSpecific
+)
+/*++
+
+Routine Description:
+
+  Sets the HW (!) Device Specific info
+
+Arguments:
+
+  uiDevSpecific - int for this example.
+
+Return Value:
+
+    void
+
+--*/
+{
+    m_uiDevSpecific = uiDevSpecific;
+} // uiSetDevSpecific
+
+
+//=============================================================================
+BOOL
+CSimpleAudioSampleHW::GetMixerMute
+(
+    _In_  ULONG                   ulNode,
+    _In_  ULONG                   ulChannel
+)
+/*++
+
+Routine Description:
+
+  Gets the HW (!) mute levels for Simple Audio Sample
+
+Arguments:
+
+  ulNode - topology node id
+  
+  ulChannel - which channel are we reading?
+
+Return Value:
+
+  mute setting
+
+--*/
+{
+    UNREFERENCED_PARAMETER(ulChannel);
+    
+    if (ulNode < MAX_TOPOLOGY_NODES)
+    {
+        return m_MuteControls[ulNode];
+    }
+
+    return 0;
+} // GetMixerMute
+
+//=============================================================================
+ULONG                       
+CSimpleAudioSampleHW::GetMixerMux()
+/*++
+
+Routine Description:
+
+  Return the current mux selection
+
+Arguments:
+
+Return Value:
+
+  ULONG
+
+--*/
+{
+    return m_ulMux;
+} // GetMixerMux
+
+//=============================================================================
+LONG
+CSimpleAudioSampleHW::GetMixerVolume
+(   
+    _In_  ULONG                   ulNode,
+    _In_  ULONG                   ulChannel
+)
+/*++
+
+Routine Description:
+
+  Gets the HW (!) volume for Simple Audio Sample.
+
+Arguments:
+
+  ulNode - topology node id
+
+  ulChannel - which channel are we reading?
+
+Return Value:
+
+  LONG - volume level
+
+--*/
+{
+    UNREFERENCED_PARAMETER(ulChannel);
+
+    if (ulNode < MAX_TOPOLOGY_NODES)
+    {
+        return m_VolumeControls[ulNode];
+    }
+
+    return 0;
+} // GetMixerVolume
+
+//=============================================================================
+LONG
+CSimpleAudioSampleHW::GetMixerPeakMeter
+(   
+    _In_  ULONG                   ulNode,
+    _In_  ULONG                   ulChannel
+)
+/*++
+
+Routine Description:
+
+  Gets the HW (!) peak meter for Simple Audio Sample.
+
+Arguments:
+
+  ulNode - topology node id
+
+  ulChannel - which channel are we reading?
+
+Return Value:
+
+  LONG - sample peak meter level
+
+--*/
+{
+    UNREFERENCED_PARAMETER(ulChannel);
+
+    if (ulNode < MAX_TOPOLOGY_NODES)
+    {
+        return m_PeakMeterControls[ulNode];
+    }
+
+    return 0;
+} // GetMixerVolume
+
+//=============================================================================
+#pragma code_seg("PAGE")
+void 
+CSimpleAudioSampleHW::MixerReset()
+/*++
+
+Routine Description:
+
+  Resets the mixer registers.
+
+Arguments:
+
+Return Value:
+
+    void
+
+--*/
+{
+    PAGED_CODE();
+    
+    RtlFillMemory(m_VolumeControls, sizeof(LONG) * MAX_TOPOLOGY_NODES, 0xFF);
+    // Endpoints are not muted by default.
+    RtlZeroMemory(m_MuteControls, sizeof(BOOL) * MAX_TOPOLOGY_NODES);
+
+    for (ULONG i=0; i<MAX_TOPOLOGY_NODES; ++i)
+    {
+        m_PeakMeterControls[i] = PEAKMETER_SIGNED_MAXIMUM/2;
+    }
+    
+    // BUGBUG change this depending on the topology
+    m_ulMux = 2;
+} // MixerReset
+#pragma code_seg()
+
+//=============================================================================
+void
+CSimpleAudioSampleHW::SetMixerMute
+(
+    _In_  ULONG                   ulNode,
+    _In_  ULONG                   ulChannel,
+    _In_  BOOL                    fMute
+)
+/*++
+
+Routine Description:
+
+  Sets the HW (!) mute levels for Simple Audio Sample
+
+Arguments:
+
+  ulNode - topology node id
+
+  ulChannel - which channel are we setting?
+  
+  fMute - mute flag
+
+Return Value:
+
+    void
+
+--*/
+{
+    UNREFERENCED_PARAMETER(ulChannel);
+
+    if (ulNode < MAX_TOPOLOGY_NODES)
+    {
+        m_MuteControls[ulNode] = fMute;
+    }
+} // SetMixerMute
+
+//=============================================================================
+void                        
+CSimpleAudioSampleHW::SetMixerMux
+(
+    _In_  ULONG                   ulNode
+)
+/*++
+
+Routine Description:
+
+  Sets the HW (!) mux selection
+
+Arguments:
+
+  ulNode - topology node id
+
+Return Value:
+
+    void
+
+--*/
+{
+    m_ulMux = ulNode;
+} // SetMixMux
+
+//=============================================================================
+void  
+CSimpleAudioSampleHW::SetMixerVolume
+(   
+    _In_  ULONG                   ulNode,
+    _In_  ULONG                   ulChannel,
+    _In_  LONG                    lVolume
+)
+/*++
+
+Routine Description:
+
+  Sets the HW (!) volume for Simple Audio Sample.
+
+Arguments:
+
+  ulNode - topology node id
+
+  ulChannel - which channel are we setting?
+
+  lVolume - volume level
+
+Return Value:
+
+    void
+
+--*/
+{
+    UNREFERENCED_PARAMETER(ulChannel);
+
+    if (ulNode < MAX_TOPOLOGY_NODES)
+    {
+        m_VolumeControls[ulNode] = lVolume;
+    }
+} // SetMixerVolume