mirror of
https://github.com/gnif/LookingGlass.git
synced 2026-11-12 23:07:21 +00:00
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++
/**
|
|
* Looking Glass
|
|
* Copyright © 2017-2026 The Looking Glass Authors
|
|
* https://looking-glass.io
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify it
|
|
* under the terms of the GNU General Public License as published by the Free
|
|
* Software Foundation; either version 2 of the License, or (at your option)
|
|
* any later version.
|
|
*
|
|
* This program is distributed in the hope that it will be useful, but WITHOUT
|
|
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
|
|
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
|
|
* more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License along
|
|
* with this program; if not, write to the Free Software Foundation, Inc., 59
|
|
* Temple Place, Suite 330, Boston, MA 02111-1307 USA
|
|
*/
|
|
|
|
#pragma once
|
|
|
|
#include "AudioClock.h"
|
|
#include "Common.h"
|
|
#include "RingBuffer.h"
|
|
|
|
struct AudioStreamSnapshot
|
|
{
|
|
KSSTATE state;
|
|
bool formatValid;
|
|
UCHAR reserved[3];
|
|
ULONGLONG generation;
|
|
FormatFingerprint format;
|
|
};
|
|
|
|
class CAudioAdapter final : public IUnknown
|
|
{
|
|
public:
|
|
CAudioAdapter();
|
|
~CAudioAdapter();
|
|
|
|
NTSTATUS Initialize();
|
|
|
|
_IRQL_requires_max_(DISPATCH_LEVEL)
|
|
NTSTATUS ConfigureStream(
|
|
_In_ EndpointKind kind,
|
|
_In_ const FormatFingerprint &format);
|
|
|
|
_IRQL_requires_max_(DISPATCH_LEVEL)
|
|
void SetStreamState(
|
|
_In_ EndpointKind kind,
|
|
_In_ KSSTATE state);
|
|
|
|
_IRQL_requires_max_(DISPATCH_LEVEL)
|
|
void GetStreamSnapshot(
|
|
_In_ EndpointKind kind,
|
|
_Out_ AudioStreamSnapshot *snapshot);
|
|
|
|
_IRQL_requires_max_(DISPATCH_LEVEL)
|
|
void SetBrokerActive(_In_ bool active);
|
|
|
|
_IRQL_requires_max_(DISPATCH_LEVEL)
|
|
void ResetCapture();
|
|
|
|
_IRQL_requires_max_(DISPATCH_LEVEL)
|
|
void WriteRenderFrames(
|
|
_In_reads_bytes_(bytes) const BYTE *data,
|
|
_In_ ULONG bytes);
|
|
|
|
_IRQL_requires_max_(DISPATCH_LEVEL)
|
|
void MarkRenderDiscontinuity();
|
|
|
|
_IRQL_requires_max_(DISPATCH_LEVEL)
|
|
void ReadCaptureFrames(
|
|
_In_ const FormatFingerprint &format,
|
|
_Out_writes_bytes_(bytes) BYTE *data,
|
|
_In_ ULONG bytes);
|
|
|
|
_IRQL_requires_max_(DISPATCH_LEVEL)
|
|
void DiscardCaptureFrames(
|
|
_In_ const FormatFingerprint &format,
|
|
_In_ ULONGLONG bytes);
|
|
|
|
_IRQL_requires_max_(DISPATCH_LEVEL)
|
|
NTSTATUS ReadRenderFrames(
|
|
_In_ const FormatFingerprint &format,
|
|
_In_ ULONGLONG streamGeneration,
|
|
_Out_writes_bytes_(capacity) BYTE *data,
|
|
_In_ ULONG capacity,
|
|
_Out_ PULONG bytesRead,
|
|
_Out_ bool *discontinuity);
|
|
|
|
_IRQL_requires_max_(DISPATCH_LEVEL)
|
|
NTSTATUS WriteCaptureFrames(
|
|
_In_ const FormatFingerprint &format,
|
|
_In_ ULONGLONG streamGeneration,
|
|
_In_ bool discontinuity,
|
|
_In_reads_bytes_(bytes) const BYTE *data,
|
|
_In_ ULONG bytes,
|
|
_Out_ PULONG droppedBytes);
|
|
|
|
_IRQL_requires_max_(DISPATCH_LEVEL)
|
|
AudioClockSnapshot GetClockSnapshot() const;
|
|
|
|
STDMETHODIMP_(NTSTATUS) QueryInterface(
|
|
_In_ REFIID interfaceId,
|
|
_COM_Outptr_ void **object) override;
|
|
STDMETHODIMP_(ULONG) AddRef() override;
|
|
STDMETHODIMP_(ULONG) Release() override;
|
|
|
|
private:
|
|
volatile LONG m_refCount;
|
|
volatile LONG m_brokerActive;
|
|
volatile LONG m_renderDiscontinuity;
|
|
KSPIN_LOCK m_transportLock;
|
|
KSPIN_LOCK m_streamStateLock;
|
|
AudioStreamSnapshot m_renderState;
|
|
AudioStreamSnapshot m_captureState;
|
|
CAudioClock m_clock;
|
|
CAudioRingBuffer m_renderRing;
|
|
CAudioRingBuffer m_captureRing;
|
|
};
|
|
|
|
NTSTATUS StartAudioDevice(
|
|
_In_ PDEVICE_OBJECT deviceObject,
|
|
_In_ PIRP irp,
|
|
_In_ PRESOURCELIST resourceList);
|