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4449881b08
Adding d3d11ipcsrc and d3d11ipcsink elements so that Direct3D11 textures can be shared between processes Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/4514>
161 lines
5.5 KiB
C++
161 lines
5.5 KiB
C++
/* GStreamer
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* Copyright (C) 2023 Seungha Yang <seungha@centricular.com>
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
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* Boston, MA 02110-1301, USA.
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*/
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#pragma once
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#include <gst/gst.h>
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#include <gst/video/video.h>
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#include <gst/d3d11/gstd3d11.h>
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#include <string>
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#include <vector>
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#include <windows.h>
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/*
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* Communication Sequence
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*
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* +--------+ +--------+
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* | client | | server |
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* +--------+ +--------+
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* | |
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* | |
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* |<---------- CONFIG ------------+
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* | |
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* +--------- NEED-DATA ---------->|
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* | +-------+
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* | | Export
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* | | D3D11 memory
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* | |<------+
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* |<-------- HAVE-DATA -----------+
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* +--------+ |
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* Import | |
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* D3D11 memory | |
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* +------->+ |
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* +--------- READ-DONE ---------->|
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* +--------+ |
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* Release | |
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* D3D11 memory | |
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* +------->| |
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* +-------- RELEASE-DATA -------->|
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* | |
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* +--------- NEED-DATA ---------->|
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* | |
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* |<----------- EOS --------------+
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* +--------+ |
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* Cleanup all | |
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* shared resources | |
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* +------->| |
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* +------------ FIN ------------->|
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*/
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enum class GstD3D11IpcPktType : guint8
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{
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UNKNOWN,
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CONFIG,
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NEED_DATA,
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HAVE_DATA,
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READ_DONE,
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RELEASE_DATA,
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EOS,
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FIN,
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};
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#pragma pack(push, 1)
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struct GstD3D11IpcPacketHeader
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{
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GstD3D11IpcPktType type;
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guint32 payload_size;
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guint32 magic;
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};
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struct GstD3D11IpcMemLayout
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{
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guint32 size;
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guint32 pitch;
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guint32 offset[4];
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};
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#pragma pack(pop)
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struct GstD3D11IpcHandleData
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{
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~GstD3D11IpcHandleData ()
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{
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if (handle)
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CloseHandle (handle);
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}
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HANDLE handle = nullptr;
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std::wstring name;
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};
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constexpr guint GST_D3D11_IPC_PKT_HEADER_SIZE = sizeof (GstD3D11IpcPacketHeader);
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#define GST_D3D11_IPC_FORMATS \
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"{ RGBA64_LE, RGB10A2_LE, BGRA, RGBA, BGRx, RGBx, VUYA, NV12, NV21, " \
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"P010_10LE, P012_LE, P016_LE }"
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bool gst_d3d11_ipc_pkt_identify (std::vector<guint8> & buf,
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GstD3D11IpcPacketHeader & header);
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bool gst_d3d11_ipc_pkt_build_config (std::vector<guint8> & buf,
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gint64 adapter_luid,
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GstCaps * caps);
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bool gst_d3d11_ipc_pkt_parse_config (std::vector<guint8> & buf,
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gint64 & adapter_luid,
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GstCaps ** caps);
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void gst_d3d11_ipc_pkt_build_need_data (std::vector<guint8> & buf);
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bool gst_d3d11_ipc_pkt_build_have_data (std::vector<guint8> & buf,
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GstClockTime pts,
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const GstD3D11IpcMemLayout & layout,
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const std::wstring & name,
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GstCaps * caps);
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bool gst_d3d11_ipc_pkt_parse_have_data (const std::vector<guint8> & buf,
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GstClockTime & pts,
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GstD3D11IpcMemLayout & layout,
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std::wstring & name,
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GstCaps ** caps);
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void gst_d3d11_ipc_pkt_build_read_done (std::vector<guint8> & buf);
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void gst_d3d11_ipc_pkt_build_release_data (std::vector<guint8> & buf,
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const std::wstring & name);
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bool gst_d3d11_ipc_pkt_parse_release_data (std::vector<guint8> & buf,
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std::wstring & name);
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void gst_d3d11_ipc_pkt_build_eos (std::vector<guint8> & buf);
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void gst_d3d11_ipc_pkt_build_fin (std::vector<guint8> & buf);
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bool gst_d3d11_ipc_clock_is_system (GstClock * clock);
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GstClockTime gst_d3d11_ipc_clock_now (void);
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std::string gst_d3d11_ipc_wstring_to_string (const std::wstring & str);
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std::wstring gst_d3d11_ipc_string_to_wstring (const std::string & str);
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std::string gst_d3d11_ipc_win32_error_to_string (guint err);
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gint64 gst_d3d11_ipc_get_shared_resource_token (void);
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std::wstring gst_d3d11_ipc_get_resource_prefix (void);
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