mirror of
https://github.com/gnif/LookingGlass.git
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b75b90ff1d
Publish committed WaveRT render frames on a 4 kHz timer while keeping packet completion and notification semantics unchanged. Serialize clock sampling with position updates to prevent concurrent queries from replaying elapsed time.
128 lines
3.4 KiB
C++
128 lines
3.4 KiB
C++
/**
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* Looking Glass
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* Copyright © 2017-2026 The Looking Glass Authors
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* https://looking-glass.io
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the Free
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* Software Foundation; either version 2 of the License, or (at your option)
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* any later version.
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*
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* This program is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc., 59
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* Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#pragma once
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#include "AudioClock.h"
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#include "Common.h"
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#include "RingBuffer.h"
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struct AudioStreamSnapshot
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{
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KSSTATE state;
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bool formatValid;
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UCHAR reserved[3];
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ULONGLONG generation;
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FormatFingerprint format;
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};
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class CAudioAdapter final : public IUnknown
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{
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public:
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CAudioAdapter();
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~CAudioAdapter();
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NTSTATUS Initialize();
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_IRQL_requires_max_(DISPATCH_LEVEL)
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NTSTATUS ConfigureStream(
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_In_ EndpointKind kind,
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_In_ const FormatFingerprint &format);
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_IRQL_requires_max_(DISPATCH_LEVEL)
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void SetStreamState(
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_In_ EndpointKind kind,
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_In_ KSSTATE state);
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_IRQL_requires_max_(DISPATCH_LEVEL)
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void GetStreamSnapshot(
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_In_ EndpointKind kind,
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_Out_ AudioStreamSnapshot *snapshot);
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_IRQL_requires_max_(DISPATCH_LEVEL)
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void SetBrokerActive(_In_ bool active);
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_IRQL_requires_max_(DISPATCH_LEVEL)
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void ResetCapture();
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_IRQL_requires_max_(DISPATCH_LEVEL)
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void WriteRenderFrames(
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_In_reads_bytes_(bytes) const BYTE *data,
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_In_ ULONG bytes);
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_IRQL_requires_max_(DISPATCH_LEVEL)
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void MarkRenderDiscontinuity();
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_IRQL_requires_max_(DISPATCH_LEVEL)
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void ReadCaptureFrames(
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_In_ const FormatFingerprint &format,
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_Out_writes_bytes_(bytes) BYTE *data,
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_In_ ULONG bytes);
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_IRQL_requires_max_(DISPATCH_LEVEL)
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void DiscardCaptureFrames(
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_In_ const FormatFingerprint &format,
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_In_ ULONGLONG bytes);
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_IRQL_requires_max_(DISPATCH_LEVEL)
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NTSTATUS ReadRenderFrames(
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_In_ const FormatFingerprint &format,
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_In_ ULONGLONG streamGeneration,
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_Out_writes_bytes_(capacity) BYTE *data,
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_In_ ULONG capacity,
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_Out_ PULONG bytesRead,
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_Out_ bool *discontinuity);
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_IRQL_requires_max_(DISPATCH_LEVEL)
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NTSTATUS WriteCaptureFrames(
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_In_ const FormatFingerprint &format,
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_In_ ULONGLONG streamGeneration,
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_In_ bool discontinuity,
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_In_reads_bytes_(bytes) const BYTE *data,
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_In_ ULONG bytes,
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_Out_ PULONG droppedBytes);
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_IRQL_requires_max_(DISPATCH_LEVEL)
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AudioClockSnapshot GetClockSnapshot() const;
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STDMETHODIMP_(NTSTATUS) QueryInterface(
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_In_ REFIID interfaceId,
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_COM_Outptr_ void **object) override;
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STDMETHODIMP_(ULONG) AddRef() override;
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STDMETHODIMP_(ULONG) Release() override;
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private:
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volatile LONG m_refCount;
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volatile LONG m_brokerActive;
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volatile LONG m_renderDiscontinuity;
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KSPIN_LOCK m_transportLock;
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KSPIN_LOCK m_streamStateLock;
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AudioStreamSnapshot m_renderState;
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AudioStreamSnapshot m_captureState;
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CAudioClock m_clock;
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CAudioRingBuffer m_renderRing;
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CAudioRingBuffer m_captureRing;
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};
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NTSTATUS StartAudioDevice(
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_In_ PDEVICE_OBJECT deviceObject,
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_In_ PIRP irp,
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_In_ PRESOURCELIST resourceList);
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