mirror of
https://github.com/gnif/LookingGlass.git
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36e170d93a
Replace the single-owner PCM queues with one shared LGMP SPMC stream. Give each admitted client reliable state and an independent playback cursor, while clients without clock authority resample locally. Extend the audio protocol with per-client epochs and barriers. Keep capture exclusive and bound authority backpressure so slow secondary readers cannot affect the disciplined low-latency path.
68 lines
1.8 KiB
C++
68 lines
1.8 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 "CSRWLock.h"
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#include <Windows.h>
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#include <stddef.h>
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#include <stdint.h>
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extern "C" {
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#include "lgmp/host.h"
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#include "lgmp/spmc.h"
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#include "lgmp/stream.h"
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}
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class CIVSHMEM;
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class CLGMPHost
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{
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private:
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PLGMPHost m_host = nullptr;
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CSRWLock m_processLock;
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public:
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CLGMPHost() = default;
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~CLGMPHost();
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CLGMPHost(const CLGMPHost&) = delete;
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CLGMPHost& operator=(const CLGMPHost&) = delete;
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bool Initialize(CIVSHMEM& ivshmem);
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void DeInit();
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bool IsInitialized() const { return m_host != nullptr; }
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LGMP_STATUS Process();
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LGMP_STATUS CreateQueue(const struct LGMPQueueConfig& config,
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PLGMPHostQueue * queue);
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LGMP_STATUS CreateStream(const struct LGMPStreamConfig& config,
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PLGMPHostStream * stream);
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LGMP_STATUS CreateSPMC(const struct LGMPSPMCConfig& config,
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PLGMPHostSPMC * stream);
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LGMP_STATUS Allocate(uint32_t size, PLGMPMemory * memory);
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LGMP_STATUS AllocateAligned(uint32_t size, uint32_t alignment,
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PLGMPMemory * memory);
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size_t Available() const;
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};
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