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https://gitlab.freedesktop.org/gstreamer/gstreamer.git
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07ba225183
Forward custom meta to peer ipcsrc elements Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/6006>
189 lines
6.9 KiB
C++
189 lines
6.9 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/cuda/gstcuda.h>
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#include <string>
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#include <vector>
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#ifdef G_OS_WIN32
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#include <windows.h>
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#else
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#include <sys/types.h>
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#include <unistd.h>
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#endif
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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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* | | CUDA memory
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* | +<------+
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* +<-------- HAVE-DATA -----------|
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* +--------+ |
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* Import | |
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* CUDA memory | |
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* +------->+ |
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* |--------- READ-DONE ---------->|
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* +--------+ |
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* Release | |
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* CUDA 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 GstCudaIpcPktType : 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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HAVE_MMAP_DATA,
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RELEASE_MMAP_DATA,
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EOS,
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FIN,
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};
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#ifdef G_OS_WIN32
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typedef HANDLE GstCudaSharableHandle;
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typedef DWORD GstCudaPid;
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#define GST_CUDA_OS_HANDLE_FORMAT "p"
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#else
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typedef int GstCudaSharableHandle;
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typedef pid_t GstCudaPid;
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#define GST_CUDA_OS_HANDLE_FORMAT "d"
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struct OVERLAPPED
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{
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gpointer dummy;
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};
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#endif
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#pragma pack(push, 1)
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struct GstCudaIpcPacketHeader
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{
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GstCudaIpcPktType type;
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guint32 payload_size;
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guint32 magic;
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};
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struct GstCudaIpcMemLayout
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{
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guint32 size;
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guint32 max_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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constexpr guint GST_CUDA_IPC_PKT_HEADER_SIZE = sizeof (GstCudaIpcPacketHeader);
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bool gst_cuda_ipc_pkt_identify (std::vector<guint8> & buf,
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GstCudaIpcPacketHeader & header);
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bool gst_cuda_ipc_pkt_build_config (std::vector<guint8> & buf,
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GstCudaPid pid,
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gboolean use_mmap,
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GstCaps * caps);
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bool gst_cuda_ipc_pkt_parse_config (std::vector<guint8> & buf,
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GstCudaPid * pid,
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gboolean * use_mmap,
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GstCaps ** caps);
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void gst_cuda_ipc_pkt_build_need_data (std::vector<guint8> & buf);
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bool gst_cuda_ipc_pkt_build_have_data (std::vector<guint8> & buf,
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GstClockTime pts,
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const GstVideoInfo & info,
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const CUipcMemHandle & handle,
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GstCaps * caps,
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const std::vector<guint8> & meta);
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bool gst_cuda_ipc_pkt_parse_have_data (const std::vector<guint8> & buf,
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GstClockTime & pts,
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GstCudaIpcMemLayout & layout,
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CUipcMemHandle & handle,
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GstCaps ** caps,
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std::vector<guint8> & meta);
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bool gst_cuda_ipc_pkt_build_have_mmap_data (std::vector<guint8> & buf,
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GstClockTime pts,
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const GstVideoInfo & info,
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guint32 max_size,
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GstCudaSharableHandle handle,
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GstCaps * caps,
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const std::vector<guint8> & meta);
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bool gst_cuda_ipc_pkt_parse_have_mmap_data (const std::vector<guint8> & buf,
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GstClockTime & pts,
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GstCudaIpcMemLayout & layout,
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GstCudaSharableHandle * handle,
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GstCaps ** caps,
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std::vector<guint8> & meta);
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void gst_cuda_ipc_pkt_build_read_done (std::vector<guint8> & buf);
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void gst_cuda_ipc_pkt_build_release_data (std::vector<guint8> & buf,
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const CUipcMemHandle & handle);
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bool gst_cuda_ipc_pkt_parse_release_data (std::vector<guint8> & buf,
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CUipcMemHandle & handle);
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void gst_cuda_ipc_pkt_build_release_mmap_data (std::vector<guint8> & buf,
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GstCudaSharableHandle handle);
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bool gst_cuda_ipc_pkt_parse_release_mmap_data (std::vector<guint8> & buf,
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GstCudaSharableHandle * handle);
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void gst_cuda_ipc_pkt_build_eos (std::vector<guint8> & buf);
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void gst_cuda_ipc_pkt_build_fin (std::vector<guint8> & buf);
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std::string gst_cuda_ipc_mem_handle_to_string (const CUipcMemHandle & handle);
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bool gst_cuda_ipc_clock_is_system (GstClock * clock);
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std::string gst_cuda_ipc_win32_error_to_string (guint err);
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bool gst_cuda_ipc_handle_is_equal (const CUipcMemHandle & handle,
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const CUipcMemHandle & other);
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