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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:
streamengine.h
Abstract:
Virtual Streaming Engine - this module controls streaming logic for
the device.
Environment:
Kernel mode
--*/
#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)
#define DEFAULT_FREQUENCY (220)
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
GetCurrentPacket(
_Out_ PULONG CurrentPacket
);
virtual
__drv_maxIRQL(PASSIVE_LEVEL)
PAGED_CODE_SEG
NTSTATUS
AssignDrmContentId(
_In_ ULONG DrmContentId,
_In_ PACXDRMRIGHTS DrmRights
);
virtual
__drv_maxIRQL(PASSIVE_LEVEL)
PAGED_CODE_SEG
NTSTATUS
GetHWLatency(
_Out_ ULONG * FifoSize,
_Out_ ULONG * Delay
);
virtual
__drv_maxIRQL(PASSIVE_LEVEL)
#pragma code_seg()
NTSTATUS
GetLinearBufferPosition(
_Out_ PULONGLONG Position
)
{
UNREFERENCED_PARAMETER(Position);
return STATUS_NOT_SUPPORTED;
}
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_opt_ CSimPeakMeter *circuitPeakmeter
);
virtual
__drv_maxIRQL(PASSIVE_LEVEL)
#pragma code_seg()
~CStreamEngine();
protected:
PVOID m_Packets[MAX_PACKET_COUNT]{ nullptr };
ULONG m_PacketsCount{ 0 };
ULONG m_PacketSize{ 0 };
ULONG m_FirstPacketOffset{ 0 };
WDFTIMER m_NotificationTimer{ nullptr };
ACX_STREAM_STATE m_CurrentState{ AcxStreamStateStop };
ULONG m_CurrentPacket{ 0 };
ULONGLONG m_Position{ 0 };
ACXSTREAM m_Stream{ nullptr };
ACXDATAFORMAT m_StreamFormat{ nullptr };
ULONGLONG m_StartTime{ 0 };
ULONGLONG m_StartPosition{ 0 };
ULONGLONG m_GlitchAdjust{ 0 };
LARGE_INTEGER m_PerformanceCounterFrequency{ 0 };
LARGE_INTEGER m_CurrentPacketStart{ 0 };
LARGE_INTEGER m_LastPacketStart{ 0 };
CSimPeakMeter m_PeakMeter;
CSimPeakMeter* m_pCircuitPeakmeter{ nullptr };
static
__drv_maxIRQL(DISPATCH_LEVEL)
_Function_class_(EVT_WDF_TIMER)
#pragma code_seg()
VOID s_EvtStreamPassCallback(
_In_ WDFTIMER Timer
);
// This is run every time the stream timer fires
virtual
__drv_maxIRQL(DISPATCH_LEVEL)
#pragma code_seg()
VOID
StreamPassCallback();
virtual
__drv_maxIRQL(DISPATCH_LEVEL)
#pragma code_seg()
VOID
ScheduleNextPass();
virtual
__drv_maxIRQL(DISPATCH_LEVEL)
#pragma code_seg()
VOID
UpdatePosition();
virtual
__drv_maxIRQL(DISPATCH_LEVEL)
#pragma code_seg()
ULONG
GetBytesPerSecond();
virtual
__drv_maxIRQL(DISPATCH_LEVEL)
#pragma code_seg()
VOID
ProcessPacket() = 0;
};
class CRenderStreamEngine : public CStreamEngine
{
public:
__drv_maxIRQL(PASSIVE_LEVEL)
PAGED_CODE_SEG
CRenderStreamEngine(
_In_ ACXSTREAM Stream,
_In_ ACXDATAFORMAT StreamFormat,
_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
);
virtual
__drv_maxIRQL(PASSIVE_LEVEL)
#pragma code_seg()
NTSTATUS
GetLinearBufferPosition(
_Out_ PULONGLONG Position
);
protected:
CSaveData m_SaveData;
virtual
__drv_maxIRQL(DISPATCH_LEVEL)
#pragma code_seg()
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();
virtual
__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{ 0 };
UNICODE_STRING m_HostCaptureFileName{ 0 };
UNICODE_STRING m_LoopbackCaptureFileName{ 0 };
virtual
__drv_maxIRQL(DISPATCH_LEVEL)
#pragma code_seg()
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();
virtual
__drv_maxIRQL(PASSIVE_LEVEL)
PAGED_CODE_SEG
NTSTATUS
GetCapturePacket(
_Out_ ULONG * LastCapturePacket,
_Out_ ULONGLONG * QPCPacketStart,
_Out_ BOOLEAN * MoreData
);
protected:
virtual
__drv_maxIRQL(DISPATCH_LEVEL)
#pragma code_seg()
VOID
ProcessPacket() {}
// This is run every time the stream timer fires
virtual
__drv_maxIRQL(DISPATCH_LEVEL)
#pragma code_seg()
VOID
StreamPassCallback();
CKeywordDetector * m_KeywordDetector{ nullptr };
};
// Define DSP circuit/stream pin context.
//
typedef struct _STREAM_TIMER_CONTEXT {
CStreamEngine * StreamEngine;
} STREAM_TIMER_CONTEXT, *PSTREAM_TIMER_CONTEXT;
#pragma code_seg()
WDF_DECLARE_CONTEXT_TYPE_WITH_NAME(STREAM_TIMER_CONTEXT, GetStreamTimerContext)
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