├── LICENSE ├── README.md ├── disk_usage.py ├── log_writer.py ├── os_help.py ├── pipe_watcher.py ├── sample.config ├── surveillance.py └── surveillance_config.py /LICENSE: -------------------------------------------------------------------------------- 1 | GNU GENERAL PUBLIC LICENSE 2 | Version 3, 29 June 2007 3 | 4 | Copyright (C) 2007 Free Software Foundation, Inc. 5 | Everyone is permitted to copy and distribute verbatim copies 6 | of this license document, but changing it is not allowed. 7 | 8 | Preamble 9 | 10 | The GNU General Public License is a free, copyleft license for 11 | software and other kinds of works. 12 | 13 | The licenses for most software and other practical works are designed 14 | to take away your freedom to share and change the works. By contrast, 15 | the GNU General Public License is intended to guarantee your freedom to 16 | share and change all versions of a program--to make sure it remains free 17 | software for all its users. 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It is safest 630 | to attach them to the start of each source file to most effectively 631 | state the exclusion of warranty; and each file should have at least 632 | the "copyright" line and a pointer to where the full notice is found. 633 | 634 | {one line to give the program's name and a brief idea of what it does.} 635 | Copyright (C) {year} {name of author} 636 | 637 | This program is free software: you can redistribute it and/or modify 638 | it under the terms of the GNU General Public License as published by 639 | the Free Software Foundation, either version 3 of the License, or 640 | (at your option) any later version. 641 | 642 | This program is distributed in the hope that it will be useful, 643 | but WITHOUT ANY WARRANTY; without even the implied warranty of 644 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 645 | GNU General Public License for more details. 646 | 647 | You should have received a copy of the GNU General Public License 648 | along with this program. If not, see . 649 | 650 | Also add information on how to contact you by electronic and paper mail. 651 | 652 | If the program does terminal interaction, make it output a short 653 | notice like this when it starts in an interactive mode: 654 | 655 | {project} Copyright (C) {year} {fullname} 656 | This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'. 657 | This is free software, and you are welcome to redistribute it 658 | under certain conditions; type `show c' for details. 659 | 660 | The hypothetical commands `show w' and `show c' should show the appropriate 661 | parts of the General Public License. Of course, your program's commands 662 | might be different; for a GUI interface, you would use an "about box". 663 | 664 | You should also get your employer (if you work as a programmer) or school, 665 | if any, to sign a "copyright disclaimer" for the program, if necessary. 666 | For more information on this, and how to apply and follow the GNU GPL, see 667 | . 668 | 669 | The GNU General Public License does not permit incorporating your program 670 | into proprietary programs. If your program is a subroutine library, you 671 | may consider it more useful to permit linking proprietary applications with 672 | the library. If this is what you want to do, use the GNU Lesser General 673 | Public License instead of this License. But first, please read 674 | . 675 | -------------------------------------------------------------------------------- /README.md: -------------------------------------------------------------------------------- 1 | # surveillance 2 | Surveillance is a lightweight video surveillance system using ffmpeg and [Motion](https://motion-project.github.io/ "Motion") intended for use on Raspberry Pi with network attached dual-stream cameras, but usable on any linux system with any video source for which ffmpeg & motion support. 3 | 4 | 5 | Purpose: 6 | 7 | 1. I was not able to find an existing software package that met my needs of providing full high-def video stream recordings and motion detection to flag video segments that could run with limited CPU available on a raspberry pi. 8 | 9 | 2. I wanted to increase my Python knowledge, which has previously been limited to very small projects, the largest of which was a database translation and mostly were very small, no more than a single function. This project seemed large enough to be interesting and require learning some of the language capabilities I hadn't previously been exposed to. 10 | 11 | With #2 in mind, along with my previous software knowledge existing primarily of c++, java, ada and c, I welcome feedback from more experienced python developers on more pythonic -- I'd like to learn more. 12 | 13 | Read more on the [Wiki](https://github.com/ddiepo/surveillance/wiki "Wiki") 14 | -------------------------------------------------------------------------------- /disk_usage.py: -------------------------------------------------------------------------------- 1 | import os 2 | import datetime 3 | import shutil 4 | import syslog 5 | import traceback 6 | 7 | import os_help 8 | import surveillance_config as config 9 | 10 | 11 | def get_dir_size(path): 12 | """ Gets size of all files in the directory, does not recurse. """ 13 | total_size = 0 14 | for dirpath, dirnames, filenames in os.walk(path): 15 | for f in filenames: 16 | fp = os.path.join(dirpath, f) 17 | total_size += os.path.getsize(fp) 18 | return total_size 19 | 20 | 21 | class UsageInfo: 22 | def __init__(self, directory): 23 | self.directory = directory 24 | self.date = datetime.datetime.strptime( 25 | directory, config.directory_date_format) 26 | 27 | all_path = os.path.join(config.video_store_path, directory, 28 | config.video_all_dir) 29 | self.bytes_used_all = None 30 | if (os.path.exists(all_path)): 31 | self.bytes_used_all = get_dir_size(all_path) 32 | 33 | motion_path = os.path.join(config.video_store_path, directory, 34 | config.video_motion_dir) 35 | self.bytes_used_motion = get_dir_size(motion_path) 36 | 37 | 38 | class UsageInfos: 39 | """ Stores usage info for each directory ordered by date.""" 40 | 41 | def __init__(self): 42 | 43 | self.usage_info_list = [] 44 | for item in os.listdir(config.video_store_path): 45 | if (item == config.video_unprocessed_dir 46 | or not os.path.isdir( 47 | os.path.join(config.video_store_path, item))): 48 | continue 49 | try: 50 | self.usage_info_list.append(UsageInfo(item)) 51 | except Exception: 52 | syslog.syslog(1, traceback.format_exc()) 53 | traceback.print_exc() 54 | self.usage_info_list.sort(key=lambda item: item.date, reverse=True) 55 | 56 | def get_max_all_usage(self): 57 | largest = 0 58 | for usage_info in self.usage_info_list: 59 | if usage_info.bytes_used_all is not None: 60 | largest = max(largest, usage_info.bytes_used_all) 61 | 62 | return largest 63 | 64 | def compute_space_usaged_ignoring_today(self): 65 | # Ignore the first entry which should be for today 66 | bytes = 0 67 | for i in self.usage_info_list[1:]: 68 | if i.bytes_used_all is not None: 69 | bytes += i.bytes_used_all 70 | else: 71 | bytes += i.bytes_used_motion 72 | return bytes 73 | 74 | def get_oldest_day(self): 75 | return self.usage_info_list[-1] 76 | 77 | def remove_oldest_day(self): 78 | self.usage_info_list.pop(-1) 79 | 80 | 81 | def clear_non_motion_segments_for_days_too_old(usage_infos): 82 | now = datetime.datetime.now() 83 | for info in reversed(usage_infos.usage_info_list): 84 | if (info.bytes_used_all is not None and 85 | (now - info.date) > config.duration_to_keep_all_segments): 86 | syslog.syslog(2, "Clearing non-motion to free disk space: " 87 | + info.directory) 88 | shutil.rmtree( 89 | os.path.join(config.video_store_path, info.directory, 90 | config.video_all_dir), True) 91 | info.bytes_used_all = None 92 | else: 93 | break 94 | 95 | 96 | def remove_oldest_day(usage_infos): 97 | syslog.syslog(2, "Clearing day to free disk space: " 98 | + usage_infos.get_oldest_day().directory) 99 | shutil.rmtree(os.path.join( 100 | config.video_store_path, usage_infos.get_oldest_day().directory), True) 101 | usage_infos.remove_oldest_day() 102 | 103 | 104 | def cleanup(): 105 | """ Removes video segments as needed. 106 | 107 | Configuration allows to specify the number of days we keep all 108 | segments. For all days older than that we only keep the segments 109 | with motion. 110 | 111 | Configuration also allows setting a max total disk space to use. 112 | We estimate the size for the current day by using the maximum size 113 | for any of days, and remove the oldest days until we are under the 114 | cap. 115 | 116 | Note: This code assumes the motion & all directories use hard links 117 | to share the segments. 118 | """ 119 | infos = UsageInfos() 120 | 121 | on_disk = infos.compute_space_usaged_ignoring_today() 122 | max_day_size = infos.get_max_all_usage() 123 | syslog.syslog(3, "Disk Usage initial (except today): " + str(on_disk) 124 | + " Max Day Size: " + str(max_day_size)) 125 | 126 | clear_non_motion_segments_for_days_too_old(infos) 127 | on_disk = infos.compute_space_usaged_ignoring_today() 128 | while (on_disk + max_day_size > config.disk_usage_limit_bytes): 129 | remove_oldest_day(infos) 130 | on_disk = infos.compute_space_usaged_ignoring_today() 131 | 132 | syslog.syslog(3, "Disk Usage final (except today): " + str(on_disk)) 133 | 134 | return 135 | -------------------------------------------------------------------------------- /log_writer.py: -------------------------------------------------------------------------------- 1 | import datetime 2 | import os 3 | import os_help 4 | import surveillance_config as config 5 | 6 | 7 | class LogWriter: 8 | """ For writing events to a log file """ 9 | 10 | def __init__(self): 11 | self.log_file = None 12 | 13 | def log(self, file_path, time, what): 14 | if self.log_file is None or self.log_file.name != file_path: 15 | os_help.ignore_exist(os.makedirs, os.path.dirname(file_path)) 16 | self.log_file = open(file_path, 'a') 17 | 18 | timestamp = time.strftime(config.date_time_format) 19 | self.log_file.write(timestamp + ", " + what + "\n") 20 | self.log_file.flush() 21 | -------------------------------------------------------------------------------- /os_help.py: -------------------------------------------------------------------------------- 1 | import os 2 | import errno 3 | 4 | 5 | def ignore_exist(func, path): 6 | """ Ignore errno.EEXIST or errno.ENOENT exceptions """ 7 | try: 8 | func(path) 9 | except OSError as exc: # Python >2.5 10 | if exc.errno == errno.EEXIST and os.path.isdir(path): 11 | pass 12 | elif exc.errno == errno.ENOENT: 13 | pass 14 | else: 15 | raise 16 | 17 | 18 | def ignore_exist2(func, src, dest): 19 | """ Ignore errno.EEXIST or errno.ENOENT exceptions """ 20 | try: 21 | func(src, dest) 22 | except OSError as exc: # Python >2.5 23 | if exc.errno == errno.EEXIST: 24 | pass 25 | else: 26 | raise 27 | -------------------------------------------------------------------------------- /pipe_watcher.py: -------------------------------------------------------------------------------- 1 | import os 2 | import os_help 3 | 4 | 5 | class PipesWatcher: 6 | """ Monitors pipes for data. 7 | 8 | Creates the pipe, reads from the pipe when called, 9 | and removes the pipe on destruction. 10 | """ 11 | 12 | def __init__(self, files_to_monitor): 13 | self._pipes = [] 14 | for path in files_to_monitor: 15 | os_help.ignore_exist(os.unlink, path) 16 | os.mkfifo(path) 17 | pipe_fd = os.open(path, os.O_RDONLY | os.O_NONBLOCK) 18 | self._pipes.append((os.fdopen(pipe_fd), path)) 19 | 20 | def __del__(self): 21 | for pipe in self._pipes: 22 | pipe[0].close() 23 | os_help.ignore_exist(os.unlink, pipe[1]) 24 | 25 | def check(self, func): 26 | """ Checks for data on pipes, invokes callback. """ 27 | for pipe in self._pipes: 28 | while True: 29 | message = pipe[0].readline().rstrip('\n') 30 | if message: 31 | func(message, pipe[1]) 32 | else: 33 | break 34 | -------------------------------------------------------------------------------- /sample.config: -------------------------------------------------------------------------------- 1 | [surveillance] 2 | 3 | # Temporary area for us to create config files on-the-fly, etc. 4 | ramdisk = /dev/shm 5 | 6 | # Where we will store the captured videos 7 | video_store_path = /tmp/surveillance_video_storage 8 | 9 | # Location where mask files are for the various cameras. 10 | # Mask file should use the format: " .pgm" 11 | # see https://motion-project.github.io/motion_config.html#mask_file 12 | motion_mask_path = ~/motion_masks 13 | 14 | # How long to keep video segments for which no motion was detected. 15 | days_to_keep_motionless_segments = 21 16 | 17 | # How much space to use for storing the video segments. 18 | # We do our best to never exceed this, although it's possible that it 19 | # may be slightly exceeded 20 | disk_usage_limit_bytes = 3298534883328 21 | 22 | # Each Camera has its own section 23 | [back1] 24 | record_url = rtsp://192.168.0.31:554/Streaming/Channels/1/ 25 | monitor_url = rtsp://192.168.0.31:554/Streaming/Channels/2/ 26 | 27 | [front1] 28 | record_url = rtsp://192.168.0.31:554/Streaming/Channels/1/ 29 | monitor_url = rtsp://192.168.0.32:554/Streaming/Channels/2/ 30 | 31 | [front2] 32 | record_url = rtsp://192.168.0.33:554/Streaming/Channels/1/ 33 | monitor_url = rtsp://192.168.0.33:554/Streaming/Channels/2/ 34 | 35 | [entry1] 36 | record_url = rtsp://192.168.0.34:554/Streaming/Channels/1/ 37 | monitor_url = rtsp://192.168.0.34:554/Streaming/Channels/2/ 38 | -------------------------------------------------------------------------------- /surveillance.py: -------------------------------------------------------------------------------- 1 | import datetime 2 | import os 3 | import signal 4 | import shutil 5 | import subprocess 6 | import sys 7 | import syslog 8 | import time 9 | import traceback 10 | 11 | import os_help 12 | import pipe_watcher 13 | import disk_usage 14 | import log_writer 15 | import surveillance_config as config 16 | 17 | _debug = False 18 | 19 | # Global variable to store all our camera stuff 20 | camera_item = [] 21 | motion_pid = None 22 | eventlog = log_writer.LogWriter() 23 | 24 | 25 | class CameraItems: 26 | """ Data structure for storing information about a single camera """ 27 | 28 | def __init__(self, camera_index): 29 | self.name = config.cameras[camera_index].name 30 | self.capture_url = config.cameras[camera_index].record_url 31 | self.capture_path = os.path.join( 32 | config.video_unprocessed_path, self.name) 33 | self.capture_process = None 34 | self.save_prefix = "save-" 35 | self.motion_index = camera_index + 1 36 | self.monitor_url = config.cameras[camera_index].monitor_url 37 | self.pipe = os.path.join( 38 | config.working_area, "motion_pipe_cam" + str(self.motion_index)) 39 | self.motion_start_time = None 40 | 41 | os_help.ignore_exist(os.makedirs, self.capture_path) 42 | self.write_motion_config() 43 | self.start_capture() 44 | print "Monitoring Camera: " + self.name 45 | 46 | def cleanup(self): 47 | try: 48 | self.capture_process.terminate() 49 | except Exception: 50 | pass 51 | 52 | self.process_segments(datetime.datetime.now()) 53 | 54 | def write_motion_config(self): 55 | thread_conf_file = open(os.path.join( 56 | config.motion_config_path, self.name + '.cfg'), 'w') 57 | thread_conf_file.write("log_level 4\n") 58 | thread_conf_file.write("threshold 500\n") # default 1500 59 | thread_conf_file.write("netcam_url " + self.monitor_url + '\n') 60 | thread_conf_file.write("camera_id " + str(self.motion_index) + "\n") 61 | thread_conf_file.write("on_event_start echo on %t > " 62 | + self.pipe + "\n") 63 | thread_conf_file.write("on_event_end echo off %t > " 64 | + self.pipe + "\n") 65 | maskfile = os.path.join(config.motion_mask_path, 66 | self.name + '.pgm') 67 | if os.path.isfile(maskfile): 68 | thread_conf_file.write("mask_file " + maskfile + '\n') 69 | 70 | motion_conf_file = open(os.path.join( 71 | config.motion_config_path, 'motion.cfg'), 'a') 72 | motion_conf_file.write("camera " + thread_conf_file.name + '\n') 73 | 74 | def start_capture(self): 75 | FNULL = open(os.devnull, 'w') 76 | _cmd = ["ffmpeg", 77 | "-rtsp_transport", "tcp", 78 | "-stimeout", "2000000", # TCP Timeout for the stream 79 | "-i", self.capture_url, 80 | "-c", "copy", 81 | "-f", "segment", 82 | "-segment_time", str(config.segment_length.seconds), 83 | "-segment_format", "mp4", 84 | "-reset_timestamps", "1", 85 | "-strftime", "1", 86 | (self.capture_path + os.path.sep + self.name + "." 87 | + config.date_time_format + ".mp4")] 88 | self.capture_process = subprocess.Popen(_cmd, stdout=FNULL, 89 | stderr=subprocess.STDOUT) 90 | syslog.syslog(2, "Capture started for: " + self.name 91 | + " cmd: " + str(_cmd) 92 | + " pid: " + str(self.capture_process.pid)) 93 | 94 | def process_segments(self, now): 95 | """ Mark video segments as having motion or not. 96 | All segments are linked to the "all" subdir, 97 | segments with motion are also linked to the "motion" subdir. 98 | Segments are removed from the "unprocessed" dir except if that 99 | segment is still the currently-being-written-to segment. It would 100 | be safe to unlink that segment, but we leave it to make it easy 101 | to find that file. 102 | """ 103 | file_list = os.listdir(self.capture_path) 104 | segments = [] 105 | for _file in file_list: 106 | pieces = _file.split('.') 107 | if len(pieces) < 2 or pieces[len(pieces) - 1] != "mp4": 108 | print "Unexpected pieces count: " + str(pieces) 109 | continue 110 | 111 | try: 112 | start_time = datetime.datetime.strptime( 113 | pieces[len(pieces) - 2], config.date_time_format) 114 | segments.append((start_time, _file)) 115 | except Exception: 116 | syslog.syslog(1, traceback.format_exc()) 117 | traceback.print_exc() 118 | 119 | # Sort by starting date 120 | segments.sort(key=lambda tup: tup[0]) 121 | 122 | for segment in segments: 123 | motion_file = os.path.join(get_motion_dir(segment[0]), segment[1]) 124 | if (self.motion_start_time is None 125 | or (self.motion_start_time - config.event_gap > 126 | segment[0] + config.segment_length) 127 | or segment[0] > now 128 | or os.path.exists(motion_file)): 129 | continue 130 | 131 | os_help.ignore_exist(os.makedirs, os.path.dirname(motion_file)) 132 | os.link(os.path.join(self.capture_path, segment[1]), motion_file) 133 | 134 | for segnum, segment in enumerate(segments): 135 | date_stamp = (segment[0].strftime(config.directory_date_format)) 136 | dest = os.path.join(config.video_store_path, 137 | date_stamp, config.video_all_dir, segment[1]) 138 | src = os.path.join(self.capture_path, segment[1]) 139 | os_help.ignore_exist(os.makedirs, os.path.dirname(dest)) 140 | os_help.ignore_exist2(os.link, src, dest) 141 | 142 | if (segnum + 1 != len(segments)): 143 | os.unlink(src) 144 | 145 | def restart_process_if_died(self): 146 | if self.capture_process.poll() is not None: 147 | syslog.syslog(1, "ffmpeg capture process died, restarting: " 148 | + self.name) 149 | self.start_capture() 150 | 151 | def notify_motion(self, motion_is_active, time): 152 | # Don't take action if the state didn't change 153 | if (self.motion_start_time is not None) == motion_is_active: 154 | print "Unexpected, no motion transition: " + str(motion_is_active) 155 | return 156 | 157 | if motion_is_active: 158 | self.motion_start_time = time 159 | else: 160 | self.process_segments(time) 161 | self.motion_start_time = None 162 | 163 | 164 | def get_motion_dir(time): 165 | date_stamp = time.strftime(config.directory_date_format) 166 | motion_dir = os.path.join(config.video_store_path, date_stamp, 167 | config.video_motion_dir) 168 | return motion_dir 169 | 170 | 171 | def write_base_motion_config_file(): 172 | motion_conf_file = open(os.path.join( 173 | config.motion_config_path, 'motion.cfg'), 'w') 174 | motion_conf_file.write("log_level 4\n") 175 | motion_conf_file.write("rtsp_uses_tcp on\n") 176 | # Don't use the motion process to capture: 177 | motion_conf_file.write("output_pictures off\n") 178 | motion_conf_file.write("event_gap " 179 | + str(config.event_gap.seconds) + "\n") 180 | motion_conf_file.write("\n") 181 | 182 | 183 | def on_change(message, pipe): 184 | global eventlog 185 | is_on = (message.split(None, 1)[0] == "on") 186 | now = datetime.datetime.now() 187 | for camera in camera_item: 188 | if (camera.pipe == pipe): 189 | logfile = (os.path.join(get_motion_dir(now), "motion.log")) 190 | eventlog.log(logfile, now, camera.name + ", " + message) 191 | camera.notify_motion(is_on, now) 192 | 193 | 194 | def initialize_cameras(): 195 | write_base_motion_config_file() 196 | for index, camera in enumerate(config.cameras): 197 | _cam = CameraItems(index) 198 | camera_item.append(_cam) 199 | 200 | 201 | def get_pipes(): 202 | _pipes = [] 203 | for camera in camera_item: 204 | _pipes.append(camera.pipe) 205 | return _pipes 206 | 207 | 208 | def start_motion_detection(): 209 | global motion_pid 210 | FNULL = open(os.devnull, 'w') 211 | _cmd = ["motion", 212 | "-c", os.path.join(config.motion_config_path, "motion.cfg")] 213 | motion_pid = subprocess.Popen(_cmd, stdout=FNULL, stderr=subprocess.STDOUT) 214 | syslog.syslog(2, "Starting motion detection: " + str(_cmd) 215 | + " pid: " + str(motion_pid.pid)) 216 | 217 | 218 | def sighandler(signum, frame): 219 | sys.exit("caught signal: " + str(signum)) 220 | 221 | 222 | try: 223 | config.init(sys.argv[1]) 224 | signal.signal(signal.SIGTERM, sighandler) 225 | shutil.rmtree(config.working_area, True) 226 | shutil.rmtree(config.motion_config_path, True) 227 | shutil.rmtree(config.video_unprocessed_path, True) 228 | os_help.ignore_exist(os.makedirs, config.motion_config_path) 229 | initialize_cameras() 230 | my_input = pipe_watcher.PipesWatcher(get_pipes()) 231 | start_motion_detection() 232 | 233 | start_time = datetime.datetime.now() 234 | space_check_time = start_time - config.space_check_rate 235 | while True: 236 | my_input.check(on_change) 237 | now = datetime.datetime.now() 238 | if (now - space_check_time) > config.space_check_rate: 239 | space_check_time = now 240 | disk_usage.cleanup() 241 | 242 | if (now - start_time) > config.periodic_process_rate: 243 | start_time = now 244 | 245 | for camera in camera_item: 246 | camera.process_segments(now) 247 | camera.restart_process_if_died() 248 | 249 | if motion_pid.poll() is not None: 250 | syslog.syslog(1, "motion process died, restarting.") 251 | start_motion_detection() 252 | 253 | else: 254 | time.sleep(1) 255 | 256 | except Exception: 257 | traceback.print_exc() 258 | syslog.syslog(1, traceback.format_exc()) 259 | 260 | finally: 261 | print "Shutting down..." 262 | if motion_pid is not None and motion_pid.poll() is None: 263 | motion_pid.kill() 264 | 265 | for camera in camera_item: 266 | camera.cleanup() 267 | 268 | try: 269 | if not _debug: 270 | shutil.rmtree(config.motion_config_path, True) 271 | shutil.rmtree(config.video_unprocessed_path, True) 272 | except Exception: 273 | print "Oops, couldn't cleanup" 274 | -------------------------------------------------------------------------------- /surveillance_config.py: -------------------------------------------------------------------------------- 1 | import datetime 2 | from collections import namedtuple 3 | import os 4 | import ConfigParser 5 | 6 | 7 | # List of camera tuples, of (record stream, motion stream) 8 | Camera = namedtuple("Camera", ['name', 'record_url', 'monitor_url']) 9 | cameras = [] 10 | 11 | # Subdirectory to store video segments flagged with motion for a given day 12 | video_motion_dir = "motion" 13 | 14 | # Subdirectory to store all the video segments for a given day 15 | video_all_dir = "all" 16 | 17 | # Subdirectory to store segments not yet processed 18 | video_unprocessed_dir = "unprocessed" 19 | 20 | # How long each video file will be 21 | segment_length = datetime.timedelta(seconds=300) 22 | 23 | # How often to move files from the unprocessed dir 24 | periodic_process_rate = datetime.timedelta(seconds=30) 25 | 26 | # How frequently to cleanup disk space 27 | # Note: That logic assumes it will be called at least every 1 day 28 | space_check_rate = datetime.timedelta(days=1) 29 | 30 | # How long before or after a motion event to trigger a segment to be flagged. 31 | event_gap = datetime.timedelta(seconds=15) # time before or after motion 32 | 33 | # Format used for writing/parsing file segment's date & time. 34 | date_time_format = "%Y%m%d-%H%M%S%Z" 35 | 36 | # Format used for writing/parsing directories for storing segments. 37 | directory_date_format = "%Y.%m.%d" 38 | 39 | 40 | def parse_overall(configuration, section): 41 | global ramdisk 42 | global video_store_path 43 | global motion_mask_path 44 | global duration_to_keep_all_segments 45 | global disk_usage_limit_bytes 46 | 47 | ramdisk = configuration.get(section, "ramdisk") 48 | video_store_path = configuration.get(section, "video_store_path") 49 | motion_mask_path = configuration.get(section, "motion_mask_path") 50 | 51 | days = configuration.getint(section, "days_to_keep_motionless_segments") 52 | duration_to_keep_all_segments = datetime.timedelta(days=days) 53 | 54 | disk_usage_limit_bytes = configuration.getint( 55 | section, "disk_usage_limit_bytes") 56 | 57 | 58 | def parse_cameras(configuration, sectionToIgnore): 59 | global cameras 60 | 61 | for section in configuration.sections(): 62 | if section == sectionToIgnore: 63 | continue 64 | 65 | cameras.append( 66 | Camera(section, 67 | configuration.get(section, "record_url"), 68 | configuration.get(section, "monitor_url"))) 69 | 70 | 71 | def parse(config_file): 72 | print "Parsing: " + config_file 73 | configuration = ConfigParser.RawConfigParser() 74 | configuration.read(config_file) 75 | 76 | section = "surveillance" 77 | parse_overall(configuration, section) 78 | parse_cameras(configuration, section) 79 | 80 | 81 | def init(config_file): 82 | global working_area 83 | global motion_config_path 84 | global video_unprocessed_path 85 | 86 | parse(config_file) 87 | working_area = os.path.join(ramdisk, "surveillance") 88 | motion_config_path = os.path.join(working_area, "motion_config") 89 | video_unprocessed_path = os.path.join(video_store_path, 90 | video_unprocessed_dir) 91 | --------------------------------------------------------------------------------