mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
synced 2024-12-14 20:36:32 +00:00
c6a6c56cdf
* Extend protocol so that client can notify of releasing shared memory * Server will hold shared memory object until it's released by client * Add allocator/buffer pool to reuse shared memory objects and buffers Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/3765>
292 lines
6.4 KiB
C++
292 lines
6.4 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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#include "win32ipcprotocol.h"
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#include <string.h>
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const char *
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win32_ipc_pkt_type_to_string (Win32IpcPktType type)
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{
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switch (type) {
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case WIN32_IPC_PKT_NEED_DATA:
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return "NEED-DATA";
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case WIN32_IPC_PKT_HAVE_DATA:
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return "HAVE-DATA";
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case WIN32_IPC_PKT_READ_DONE:
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return "READ-DONE";
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case WIN32_IPC_PKT_RELEASE_DATA:
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return "RELEASE-DATA";
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default:
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break;
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}
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return "Unknown";
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}
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Win32IpcPktType
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win32_ipc_pkt_type_from_raw (UINT8 type)
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{
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return (Win32IpcPktType) type;
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}
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UINT8
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win32_ipc_pkt_type_to_raw (Win32IpcPktType type)
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{
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return (UINT8) type;
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}
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#define READ_UINT32(d,v) do { \
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(*((UINT32 *) v)) = *((UINT32 *) d); \
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(d) += sizeof (UINT32); \
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} while (0)
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#define WRITE_UINT32(d,v) do { \
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*((UINT32 *) d) = v; \
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(d) += sizeof (UINT32); \
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} while (0)
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#define READ_UINT64(d,v) do { \
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(*((UINT64 *) v)) = *((UINT64 *) d); \
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(d) += sizeof (UINT64); \
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} while (0)
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#define WRITE_UINT64(d,v) do { \
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*((UINT64 *) d) = v; \
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(d) += sizeof (UINT64); \
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} while (0)
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UINT32
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win32_ipc_pkt_build_need_data (UINT8 * pkt, UINT32 pkt_len, UINT64 seq_num)
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{
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UINT8 *data = pkt;
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if (!pkt || pkt_len < WIN32_IPC_PKT_NEED_DATA_SIZE)
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return 0;
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data[0] = win32_ipc_pkt_type_to_raw (WIN32_IPC_PKT_NEED_DATA);
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data++;
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WRITE_UINT64 (data, seq_num);
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return WIN32_IPC_PKT_NEED_DATA_SIZE;
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}
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BOOL
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win32_ipc_pkt_parse_need_data (UINT8 * pkt, UINT32 pkt_len, UINT64 * seq_num)
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{
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UINT8 *data = pkt;
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if (!pkt || pkt_len < WIN32_IPC_PKT_NEED_DATA_SIZE)
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return FALSE;
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if (win32_ipc_pkt_type_from_raw (data[0]) != WIN32_IPC_PKT_NEED_DATA)
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return FALSE;
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data++;
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READ_UINT64 (data, seq_num);
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return TRUE;
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}
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UINT32
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win32_ipc_pkt_build_have_data (UINT8 * pkt, UINT32 pkt_size, UINT64 seq_num,
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const char * mmf_name, const Win32IpcVideoInfo * info)
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{
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UINT8 *data = pkt;
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size_t len;
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if (!pkt || !mmf_name || !info)
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return 0;
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len = strlen (mmf_name);
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if (len == 0)
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return 0;
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len++;
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if (pkt_size < WIN32_IPC_PKT_HAVE_DATA_SIZE + len)
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return 0;
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data[0] = win32_ipc_pkt_type_to_raw (WIN32_IPC_PKT_HAVE_DATA);
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data++;
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WRITE_UINT64 (data, seq_num);
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strcpy ((char *) data, mmf_name);
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data += len;
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WRITE_UINT32 (data, info->format);
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WRITE_UINT32 (data, info->width);
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WRITE_UINT32 (data, info->height);
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WRITE_UINT32 (data, info->fps_n);
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WRITE_UINT32 (data, info->fps_d);
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WRITE_UINT32 (data, info->par_n);
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WRITE_UINT32 (data, info->par_d);
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WRITE_UINT64 (data, info->size);
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for (UINT i = 0; i < 4; i++)
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WRITE_UINT64 (data, info->offset[i]);
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for (UINT i = 0; i < 4; i++)
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WRITE_UINT32 (data, info->stride[i]);
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WRITE_UINT64 (data, info->qpc);
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return data - pkt;
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}
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BOOL
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win32_ipc_pkt_parse_have_data (UINT8 * pkt, UINT32 pkt_size, UINT64 * seq_num,
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char * mmf_name, Win32IpcVideoInfo * info)
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{
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UINT8 *data = pkt;
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size_t len;
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if (!pkt || pkt_size < WIN32_IPC_PKT_HAVE_DATA_SIZE)
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return FALSE;
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if (win32_ipc_pkt_type_from_raw (pkt[0]) != WIN32_IPC_PKT_HAVE_DATA)
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return FALSE;
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data++;
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READ_UINT64 (data, seq_num);
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len = strnlen ((const char *) data, pkt_size - (data - pkt));
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if (len == 0)
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return FALSE;
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len++;
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if (pkt_size < WIN32_IPC_PKT_HAVE_DATA_SIZE + len)
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return FALSE;
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strcpy (mmf_name, (const char *) data);
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data += len;
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READ_UINT32 (data, &info->format);
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READ_UINT32 (data, &info->width);
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READ_UINT32 (data, &info->height);
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READ_UINT32 (data, &info->fps_n);
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READ_UINT32 (data, &info->fps_d);
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READ_UINT32 (data, &info->par_n);
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READ_UINT32 (data, &info->par_d);
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READ_UINT64 (data, &info->size);
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for (UINT i = 0; i < 4; i++)
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READ_UINT64 (data, &info->offset[i]);
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for (UINT i = 0; i < 4; i++)
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READ_UINT32 (data, &info->stride[i]);
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READ_UINT64 (data, &info->qpc);
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return TRUE;
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}
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UINT32
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win32_ipc_pkt_build_read_done (UINT8 * pkt, UINT32 pkt_len, UINT64 seq_num)
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{
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UINT8 *data = pkt;
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if (!pkt || pkt_len < WIN32_IPC_PKT_READ_DONE_SIZE)
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return 0;
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data[0] = win32_ipc_pkt_type_to_raw (WIN32_IPC_PKT_READ_DONE);
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data++;
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WRITE_UINT64 (data, seq_num);
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return WIN32_IPC_PKT_READ_DONE_SIZE;
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}
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BOOL
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win32_ipc_pkt_parse_read_done (UINT8 * pkt, UINT32 pkt_len, UINT64 * seq_num)
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{
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UINT8 *data = pkt;
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if (!pkt || pkt_len < WIN32_IPC_PKT_READ_DONE_SIZE)
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return FALSE;
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if (win32_ipc_pkt_type_from_raw (data[0]) != WIN32_IPC_PKT_READ_DONE)
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return FALSE;
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data++;
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READ_UINT64 (data, seq_num);
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return TRUE;
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}
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UINT32
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win32_ipc_pkt_build_release_data (UINT8 * pkt, UINT32 pkt_size, UINT64 seq_num,
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const char * mmf_name)
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{
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UINT8 *data = pkt;
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size_t len;
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if (!pkt || !mmf_name)
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return 0;
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len = strlen (mmf_name);
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if (len == 0)
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return 0;
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len++;
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data[0] = win32_ipc_pkt_type_to_raw (WIN32_IPC_PKT_RELEASE_DATA);
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data++;
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WRITE_UINT64 (data, seq_num);
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strcpy ((char *) data, mmf_name);
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data += len;
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return data - pkt;
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}
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BOOL
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win32_ipc_pkt_parse_release_data (UINT8 * pkt, UINT32 pkt_size,
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UINT64 * seq_num, char * mmf_name)
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{
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UINT8 *data = pkt;
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size_t len;
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if (win32_ipc_pkt_type_from_raw (pkt[0]) != WIN32_IPC_PKT_RELEASE_DATA)
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return FALSE;
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data++;
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READ_UINT64 (data, seq_num);
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len = strnlen ((const char *) data, pkt_size - (data - pkt));
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if (len == 0)
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return FALSE;
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len++;
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strcpy (mmf_name, (const char *) data);
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data += len;
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return TRUE;
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}
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