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4f846540cb
Windows supports various IPC methods but that's completely different form that of *nix from implementation point of view. So, instead of adding shared memory functionality to existing shm plugin, new WIN32 shared memory source/sink elements are implemented in this commit. Each videosink (server) and videosrc (client) pair will communicate using WIN32 named pipe and thus user should configure unique/proper pipe name to them (e.g., \\.\pipe\MyPipeName). Once connection is established, videosink will create named shared memory object per frame and client will be able to consume the object (i.e., memory mapped file handle) without additional copy operation. Note that implementations under "protocol" directory are almost pure C/C++ with WIN32 APIs except for a few defines and debug functions. So, applications can take only the protocol part so that the application can send/receive shared-memory object from/to the other end even if it's not an actual GStreamer element. Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/3441>
30 lines
1.3 KiB
C++
30 lines
1.3 KiB
C++
/* GStreamer
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* Copyright (C) 2022 Seungha Yang <seungha@centricular.com>
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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* DEALINGS IN THE SOFTWARE.
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*
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* SPDX-License-Identifier: MIT
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*/
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#pragma once
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#include <windows.h>
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#include <string>
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std::string win32_ipc_error_message (DWORD error_code);
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