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refactoring

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This commit is contained in:
Maxim Devaev
2022-07-08 20:29:57 +03:00
parent 3f45debca0
commit 50e8469a59
3 changed files with 109 additions and 49 deletions
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64
janus/src/memsinkfd.c Normal file
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/*****************************************************************************
# #
# uStreamer - Lightweight and fast MJPEG-HTTP streamer. #
# #
# Copyright (C) 2018-2022 Maxim Devaev <mdevaev@gmail.com> #
# #
# This program is free software: you can redistribute it and/or modify #
# it under the terms of the GNU General Public License as published by #
# the Free Software Foundation, either version 3 of the License, or #
# (at your option) any later version. #
# #
# This program is distributed in the hope that it will be useful, #
# but WITHOUT ANY WARRANTY; without even the implied warranty of #
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the #
# GNU General Public License for more details. #
# #
# You should have received a copy of the GNU General Public License #
# along with this program. If not, see <https://www.gnu.org/licenses/>. #
# #
*****************************************************************************/
#include "memsinkfd.h"
int memsink_fd_wait_frame(int fd, memsink_shared_s* mem, uint64_t last_id) {
long double deadline_ts = get_now_monotonic() + 1; // wait_timeout
long double now;
do {
int result = flock_timedwait_monotonic(fd, 1); // lock_timeout
now = get_now_monotonic();
if (result < 0 && errno != EWOULDBLOCK) {
JLOG_PERROR("video", "Can't lock memsink");
return -1;
} else if (result == 0) {
if (mem->magic == MEMSINK_MAGIC && mem->version == MEMSINK_VERSION && mem->id != last_id) {
return 0;
}
if (flock(fd, LOCK_UN) < 0) {
JLOG_PERROR("video", "Can't unlock memsink");
return -1;
}
}
usleep(1000); // lock_polling
} while (now < deadline_ts);
return -2;
}
int memsink_fd_get_frame(int fd, memsink_shared_s *mem, frame_s *frame, uint64_t *frame_id) {
frame_set_data(frame, mem->data, mem->used);
FRAME_COPY_META(mem, frame);
*frame_id = mem->id;
mem->last_client_ts = get_now_monotonic();
int retval = 0;
if (frame->format != V4L2_PIX_FMT_H264) {
JLOG_ERROR("video", "Got non-H264 frame from memsink");
retval = -1;
}
if (flock(fd, LOCK_UN) < 0) {
JLOG_PERROR("video", "Can't unlock memsink");
retval = -1;
}
return retval;
}