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85 lines
2.5 KiB
C
85 lines
2.5 KiB
C
/*****************************************************************************
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# #
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# uStreamer - Lightweight and fast MJPEG-HTTP streamer. #
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# #
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# Copyright (C) 2018-2023 Maxim Devaev <mdevaev@gmail.com> #
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# #
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# This program is free software: you can redistribute it and/or modify #
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# it under the terms of the GNU General Public License as published by #
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# the Free Software Foundation, either version 3 of the License, or #
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# (at your option) any later version. #
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# #
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# This program 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 #
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# GNU General Public License for more details. #
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# #
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# You should have received a copy of the GNU General Public License #
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# along with this program. If not, see <https://www.gnu.org/licenses/>. #
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# #
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*****************************************************************************/
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#pragma once
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#include <sys/mman.h>
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#include "types.h"
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#define US_MEMSINK_MAGIC ((u64)0xCAFEBABECAFEBABE)
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#define US_MEMSINK_VERSION ((u32)4)
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#ifndef US_CFG_MEMSINK_MAX_DATA
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# define US_CFG_MEMSINK_MAX_DATA 33554432
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#endif
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#define US_MEMSINK_MAX_DATA ((uz)(US_CFG_MEMSINK_MAX_DATA))
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typedef struct {
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u64 magic;
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u32 version;
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u64 id;
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uz used;
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uint width;
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uint height;
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uint format;
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uint stride;
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bool online;
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bool key;
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uint gop;
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ldf grab_ts;
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ldf encode_begin_ts;
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ldf encode_end_ts;
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ldf last_client_ts;
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bool key_requested;
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u8 data[US_MEMSINK_MAX_DATA];
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} us_memsink_shared_s;
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INLINE us_memsink_shared_s *us_memsink_shared_map(int fd) {
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us_memsink_shared_s *mem = mmap(
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NULL,
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sizeof(us_memsink_shared_s),
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PROT_READ | PROT_WRITE,
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MAP_SHARED,
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fd,
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0
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);
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if (mem == MAP_FAILED) {
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return NULL;
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}
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assert(mem != NULL);
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return mem;
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}
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INLINE int us_memsink_shared_unmap(us_memsink_shared_s *mem) {
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assert(mem != NULL);
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return munmap(mem, sizeof(us_memsink_shared_s));
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}
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