Adding the AudioCodec ACX sample driver to Github. (#882)

* Adding the AudioCodec acx sample driver to Github.

* Fix to make AudioCodec driver all build in one solution file. Builds in ARM64 now.

1 files changed, 449 insertions, 0 deletions

diff --git a/audio/Acx/Samples/Common/StreamEngine.h b/audio/Acx/Samples/Common/StreamEngine.h
new file mode 100644
index 00000000..deeff95a
--- /dev/null
+++ b/audio/Acx/Samples/Common/StreamEngine.h
@@ -0,0 +1,449 @@
+#pragma once
+
+#include "savedata.h"
+#include "tonegenerator.h"
+#include "WaveReader.h"
+#include "SimPeakMeter.h"
+#include "keyworddetector.h"
+
+#define HNSTIME_PER_MILLISECOND 10000
+
+#define MAX_PACKET_COUNT 2
+
+#define DEFAULT_FREQUENCY 220
+#define LOOPBACK_FREQUENCY 500
+
+// Stream callbacks shared between Capture and Render
+
+VOID
+EvtStreamDestroy(
+    _In_ WDFOBJECT Object
+);
+
+PAGED_CODE_SEG
+NTSTATUS
+EvtStreamGetHwLatency(
+    _In_ ACXSTREAM Stream,
+    _Out_ ULONG* FifoSize,
+    _Out_ ULONG* Delay
+);
+
+PAGED_CODE_SEG
+NTSTATUS
+EvtStreamAllocateRtPackets(
+    _In_ ACXSTREAM Stream,
+    _In_ ULONG PacketCount,
+    _In_ ULONG PacketSize,
+    _Out_ PACX_RTPACKET* Packets
+);
+
+PAGED_CODE_SEG
+VOID
+EvtStreamFreeRtPackets(
+    _In_ ACXSTREAM Stream,
+    _In_ PACX_RTPACKET Packets,
+    _In_ ULONG PacketCount
+);
+
+PAGED_CODE_SEG
+NTSTATUS
+EvtStreamPrepareHardware(
+    _In_ ACXSTREAM Stream
+);
+
+PAGED_CODE_SEG
+NTSTATUS
+EvtStreamReleaseHardware(
+    _In_ ACXSTREAM Stream
+);
+
+PAGED_CODE_SEG
+NTSTATUS
+EvtStreamRun(
+    _In_ ACXSTREAM Stream
+);
+
+PAGED_CODE_SEG
+NTSTATUS
+EvtStreamPause(
+    _In_ ACXSTREAM Stream
+);
+
+PAGED_CODE_SEG
+NTSTATUS
+EvtStreamAssignDrmContentId(
+    _In_ ACXSTREAM      Stream,
+    _In_ ULONG          DrmContentId,
+    _In_ PACXDRMRIGHTS  DrmRights
+);
+
+PAGED_CODE_SEG
+NTSTATUS
+EvtStreamGetCurrentPacket(
+    _In_ ACXSTREAM          Stream,
+    _Out_ PULONG            CurrentPacket
+);
+
+PAGED_CODE_SEG
+NTSTATUS
+EvtStreamGetPresentationPosition(
+    _In_ ACXSTREAM          Stream,
+    _Out_ PULONGLONG        PositionInBlocks,
+    _Out_ PULONGLONG        QPCPosition
+);
+
+
+class CStreamEngine
+{
+public:
+    virtual
+    __drv_maxIRQL(PASSIVE_LEVEL)
+    PAGED_CODE_SEG
+    NTSTATUS
+    AllocateRtPackets(
+        _In_    ULONG           PacketCount,
+        _In_    ULONG           PacketSize,
+        _Out_   PACX_RTPACKET * Packets
+        );
+
+    virtual
+    __drv_maxIRQL(PASSIVE_LEVEL)
+    PAGED_CODE_SEG
+    VOID
+    FreeRtPackets(
+        _Frees_ptr_ PACX_RTPACKET   Packets,
+        _In_        ULONG           PacketCount
+        );
+
+    virtual
+    __drv_maxIRQL(PASSIVE_LEVEL)
+    PAGED_CODE_SEG
+    NTSTATUS
+    PrepareHardware();
+
+    virtual
+    __drv_maxIRQL(PASSIVE_LEVEL)
+    PAGED_CODE_SEG
+    NTSTATUS
+    ReleaseHardware();
+
+    virtual
+    __drv_maxIRQL(PASSIVE_LEVEL)
+    PAGED_CODE_SEG
+    NTSTATUS
+    Run();
+
+    virtual
+    __drv_maxIRQL(PASSIVE_LEVEL)
+    PAGED_CODE_SEG
+    NTSTATUS
+    Pause();
+
+    virtual
+    __drv_maxIRQL(PASSIVE_LEVEL)
+    PAGED_CODE_SEG
+    NTSTATUS
+    GetPresentationPosition(
+        _Out_   PULONGLONG      PositionInBlocks,
+        _Out_   PULONGLONG      QPCPosition
+        );
+
+    virtual
+    __drv_maxIRQL(PASSIVE_LEVEL)
+    PAGED_CODE_SEG
+    NTSTATUS
+    GetLinearBufferPosition(
+        _Out_   PULONGLONG  Position
+        );
+
+    virtual
+    __drv_maxIRQL(PASSIVE_LEVEL)
+    PAGED_CODE_SEG
+    NTSTATUS
+    SetCurrentWritePosition(
+        _In_    ULONG   Position
+        );
+
+    virtual
+    __drv_maxIRQL(PASSIVE_LEVEL)
+    PAGED_CODE_SEG
+    NTSTATUS
+    SetLastBufferPosition(
+        _In_    ULONG   Position
+        );
+
+    virtual
+    __drv_maxIRQL(PASSIVE_LEVEL)
+    PAGED_CODE_SEG
+    NTSTATUS
+    GetCurrentPacket(
+        _Out_ PULONG CurrentPacket
+        );
+
+    virtual
+    __drv_maxIRQL(PASSIVE_LEVEL)
+    PAGED_CODE_SEG
+    NTSTATUS
+    GetHWLatency(
+        _Out_   ULONG         * FifoSize, 
+        _Out_   ULONG         * Delay
+        );
+
+    virtual
+    __drv_maxIRQL(PASSIVE_LEVEL)
+    PAGED_CODE_SEG
+    NTSTATUS
+    AssignDrmContentId(
+        _In_ ULONG          DrmContentId,
+        _In_ PACXDRMRIGHTS  DrmRights
+        );
+
+    virtual
+    __drv_maxIRQL(PASSIVE_LEVEL)
+    PAGED_CODE_SEG
+    CSimPeakMeter *
+    GetPeakMeter();
+
+    __drv_maxIRQL(PASSIVE_LEVEL)
+    PAGED_CODE_SEG
+    CStreamEngine(
+        _In_    ACXSTREAM       Stream, 
+        _In_    ACXDATAFORMAT   StreamFormat,
+        _In_    BOOL            Offload,
+        _In_opt_    CSimPeakMeter   *CircuitPeakmeter
+        );
+
+    virtual
+    __drv_maxIRQL(PASSIVE_LEVEL)
+    PAGED_CODE_SEG
+    ~CStreamEngine();
+
+    __drv_maxIRQL(PASSIVE_LEVEL)
+    PAGED_CODE_SEG
+    VOID
+    SetFrequency(
+        _In_    DWORD           ToneFrequency 
+        )
+    {
+        PAGED_CODE();
+
+        m_ToneFrequency = ToneFrequency;
+    }
+
+protected:
+    PVOID               m_Packets[MAX_PACKET_COUNT];
+    ULONG               m_PacketsCount;
+    ULONG               m_PacketSize;
+    ULONG               m_FirstPacketOffset;
+    WDFTIMER            m_NotificationTimer;
+    ACX_STREAM_STATE    m_CurrentState;
+    ULONG               m_CurrentPacket;
+    ULONGLONG           m_Position;
+    ACXSTREAM           m_Stream;
+    ACXDATAFORMAT       m_StreamFormat;
+    ULONGLONG           m_StartTime;
+    ULONGLONG           m_StartPosition;
+    ULONGLONG           m_GlitchAdjust;
+    LARGE_INTEGER       m_PerformanceCounterFrequency;
+    LARGE_INTEGER       m_CurrentPacketStart;
+    LARGE_INTEGER       m_LastPacketStart;
+    DWORD               m_ToneFrequency;
+    BOOL                m_Offload;
+    CSimPeakMeter       m_PeakMeter;
+    CSimPeakMeter*      m_pCircuitPeakmeter;
+
+    static
+    __drv_maxIRQL(DISPATCH_LEVEL)
+    _Function_class_(EVT_WDF_TIMER)
+    VOID s_EvtStreamPassCallback(
+        _In_    WDFTIMER        Timer
+        );
+
+    // This is run every time the stream timer fires
+    virtual
+    __drv_maxIRQL(DISPATCH_LEVEL)
+    VOID
+    StreamPassCallback();
+
+    virtual
+    __drv_maxIRQL(DISPATCH_LEVEL)
+    VOID
+    ScheduleNextPass();
+
+    virtual
+    __drv_maxIRQL(DISPATCH_LEVEL)
+    VOID
+    UpdatePosition();
+
+    virtual
+    __drv_maxIRQL(DISPATCH_LEVEL)
+    ULONG
+    GetBytesPerSecond();
+
+    virtual
+    __drv_maxIRQL(DISPATCH_LEVEL)
+    VOID
+    ProcessPacket() = 0;
+};
+
+class CRenderStreamEngine : public CStreamEngine
+{
+public:
+    __drv_maxIRQL(PASSIVE_LEVEL)
+    PAGED_CODE_SEG
+    CRenderStreamEngine(
+        _In_    ACXSTREAM       Stream,
+        _In_    ACXDATAFORMAT   StreamFormat,
+        _In_    BOOL            Offload,
+        _In_    CSimPeakMeter   *CircuitPeakmeter
+        );
+
+    __drv_maxIRQL(PASSIVE_LEVEL)
+    PAGED_CODE_SEG
+    ~CRenderStreamEngine();
+
+    virtual
+    __drv_maxIRQL(PASSIVE_LEVEL)
+    PAGED_CODE_SEG
+    NTSTATUS
+    PrepareHardware();
+
+    virtual
+    __drv_maxIRQL(PASSIVE_LEVEL)
+    PAGED_CODE_SEG
+    NTSTATUS
+    ReleaseHardware();
+
+    virtual
+    __drv_maxIRQL(PASSIVE_LEVEL)
+    PAGED_CODE_SEG
+    NTSTATUS
+    AssignDrmContentId(
+        _In_ ULONG          DrmContentId,
+        _In_ PACXDRMRIGHTS  DrmRights
+        );
+
+    __drv_maxIRQL(PASSIVE_LEVEL)
+    PAGED_CODE_SEG
+    NTSTATUS
+    SetRenderPacket(
+        _In_    ULONG           Packet,
+        _In_    ULONG           Flags,
+        _In_    ULONG           EosPacketLength
+        );
+
+protected:
+    CSaveData m_SaveData;
+
+    virtual
+    __drv_maxIRQL(DISPATCH_LEVEL)
+    VOID
+    ProcessPacket();
+
+};
+
+class CCaptureStreamEngine : public CStreamEngine
+{
+public:
+    __drv_maxIRQL(PASSIVE_LEVEL)
+    PAGED_CODE_SEG
+    CCaptureStreamEngine(
+        _In_    ACXSTREAM       Stream,
+        _In_    ACXDATAFORMAT   StreamFormat
+        );
+
+    __drv_maxIRQL(PASSIVE_LEVEL)
+    PAGED_CODE_SEG
+    ~CCaptureStreamEngine();
+
+    virtual
+    __drv_maxIRQL(PASSIVE_LEVEL)
+    PAGED_CODE_SEG
+    NTSTATUS
+    PrepareHardware();
+
+    virtual
+    __drv_maxIRQL(PASSIVE_LEVEL)
+    PAGED_CODE_SEG
+    NTSTATUS
+    ReleaseHardware();
+
+    __drv_maxIRQL(PASSIVE_LEVEL)
+    PAGED_CODE_SEG
+    NTSTATUS
+    GetCapturePacket(
+        _Out_   ULONG         * LastCapturePacket,
+        _Out_   ULONGLONG     * QPCPacketStart,
+        _Out_   BOOLEAN       * MoreData
+        );
+
+protected:
+    ToneGenerator   m_ToneGenerator;
+    CWaveReader     m_WaveReader;
+    DWORD           m_EnableWaveCapture;
+    UNICODE_STRING  m_HostCaptureFileName;
+    UNICODE_STRING  m_LoopbackCaptureFileName;
+
+    virtual
+    __drv_maxIRQL(DISPATCH_LEVEL)
+    VOID
+    ProcessPacket();
+
+    __drv_maxIRQL(PASSIVE_LEVEL)
+    PAGED_CODE_SEG
+    NTSTATUS
+    ReadRegistrySettings();
+};
+
+class CBufferedCaptureStreamEngine : public CCaptureStreamEngine
+{
+public:
+    __drv_maxIRQL(PASSIVE_LEVEL)
+    PAGED_CODE_SEG
+    CBufferedCaptureStreamEngine(
+        _In_ ACXSTREAM          Stream,
+        _In_ ACXDATAFORMAT      StreamFormat,
+        _In_ CKeywordDetector * KeywordDetector
+        );
+
+    __drv_maxIRQL(PASSIVE_LEVEL)
+    PAGED_CODE_SEG
+    ~CBufferedCaptureStreamEngine();
+
+    virtual
+    __drv_maxIRQL(PASSIVE_LEVEL)
+    PAGED_CODE_SEG
+    NTSTATUS
+    Run();
+
+    virtual
+    __drv_maxIRQL(PASSIVE_LEVEL)
+    PAGED_CODE_SEG
+    NTSTATUS
+    Pause();
+
+    __drv_maxIRQL(PASSIVE_LEVEL)
+    PAGED_CODE_SEG
+    NTSTATUS
+    GetCapturePacket(
+        _Out_   ULONG         * LastCapturePacket,
+        _Out_   ULONGLONG     * QPCPacketStart,
+        _Out_   BOOLEAN       * MoreData
+        );
+
+protected:
+    virtual
+    __drv_maxIRQL(DISPATCH_LEVEL)
+    VOID
+    ProcessPacket();
+
+    CKeywordDetector * m_KeywordDetector;
+};
+
+// Define circuit/stream pin context.
+//
+typedef struct _STREAM_TIMER_CONTEXT {
+    CStreamEngine * StreamEngine;
+} STREAM_TIMER_CONTEXT, *PSTREAM_TIMER_CONTEXT;
+
+WDF_DECLARE_CONTEXT_TYPE_WITH_NAME(STREAM_TIMER_CONTEXT, GetStreamTimerContext)