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How to use is_stream_ready method in localstack

Best Python code snippet using localstack_python

nicolive.py

Source:nicolive.py

1import json2import logging3import re4from streamlink.utils import websocket5import threading6import time7from streamlink.plugin import Plugin, PluginArguments, PluginArgument8from streamlink.plugin.api import useragents9from streamlink.stream import HLSStream10from streamlink.compat import urlparse, unquote_plus11_log = logging.getLogger(__name__)12_url_re = re.compile(13    r"^https?://(?P<domain>live[0-9]*\.nicovideo\.jp)/watch/lv[0-9]*")14_login_url = "https://account.nicovideo.jp/login/redirector"15_login_url_params = {16    "show_button_twitter": 1,17    "show_button_facebook": 1,18    "next_url": "/"}19class NicoLive(Plugin):20    arguments = PluginArguments(21        PluginArgument(22            "email",23            argument_name="niconico-email",24            sensitive=True,25            metavar="EMAIL",26            help="The email or phone number associated with your "27                 "Niconico account"),28        PluginArgument(29            "password",30            argument_name="niconico-password",31            sensitive=True,32            metavar="PASSWORD",33            help="The password of your Niconico account"),34        PluginArgument(35            "user-session",36            argument_name="niconico-user-session",37            sensitive=True,38            metavar="VALUE",39            help="Value of the user-session token \n(can be used in "40                 "case you do not want to put your password here)"))41    is_stream_ready = False42    is_stream_ended = False43    watching_interval = 3044    watching_interval_worker_thread = None45    stream_reader = None46    _ws = None47    frontend_id = None48    @classmethod49    def can_handle_url(cls, url):50        return _url_re.match(url) is not None51    def _get_streams(self):52        self.url = self.url.split("?")[0]53        self.session.http.headers.update({54            "User-Agent": useragents.CHROME,55        })56        if not self.get_wss_api_url():57            _log.debug("Coundn't extract wss_api_url. Attempting login...")58            if not self.niconico_web_login():59                return None60            if not self.get_wss_api_url():61                _log.error("Failed to get wss_api_url.")62                _log.error(63                    "Please check if the URL is correct, "64                    "and make sure your account has access to the video.")65                return None66        self.api_connect(self.wss_api_url)67        i = 068        while not self.is_stream_ready:69            if i % 10 == 0:70                _log.debug("Waiting for permit...")71            if i == 600:72                _log.error("Waiting for permit timed out.")73                return None74            if self.is_stream_ended:75                return None76            time.sleep(0.1)77            i += 178        streams = HLSStream.parse_variant_playlist(79            self.session, self.hls_stream_url)80        nico_streams = {}81        for s in streams:82            nico_stream = NicoHLSStream(streams[s], self)83            nico_streams[s] = nico_stream84        return nico_streams85    def get_wss_api_url(self):86        _log.debug("Getting video page: {0}".format(self.url))87        resp = self.session.http.get(self.url)88        try:89            self.wss_api_url = extract_text(90                resp.text, "&quot;webSocketUrl&quot;:&quot;", "&quot;")91            if not self.wss_api_url:92                return False93        except Exception as e:94            _log.debug(e)95            _log.debug("Failed to extract wss api url")96            return False97        try:98            self.frontend_id = extract_text(99                resp.text, "&quot;frontendId&quot;:", ",&quot;")100        except Exception as e:101            _log.debug(e)102            _log.warning("Failed to extract frontend id")103        self.wss_api_url = "{0}&frontend_id={1}".format(self.wss_api_url, self.frontend_id)104        _log.debug("Video page response code: {0}".format(resp.status_code))105        _log.trace(u"Video page response body: {0}".format(resp.text))106        _log.debug("Got wss_api_url: {0}".format(self.wss_api_url))107        _log.debug("Got frontend_id: {0}".format(self.frontend_id))108        return self.wss_api_url.startswith("wss://")109    def api_on_open(self):110        self.send_playerversion()111        require_new_stream = not self.is_stream_ready112        self.send_getpermit(require_new_stream=require_new_stream)113    def api_on_error(self, ws, error=None):114        if error:115            _log.warning(error)116        _log.warning("wss api disconnected.")117        _log.warning("Attempting to reconnect in 5 secs...")118        time.sleep(5)119        self.api_connect(self.wss_api_url)120    def api_connect(self, url):121        # Proxy support adapted from the UStreamTV plugin (ustreamtv.py)122        proxy_url = self.session.get_option("https-proxy")123        if proxy_url is None:124            proxy_url = self.session.get_option("http-proxy")125        proxy_options = parse_proxy_url(proxy_url)126        if proxy_options.get('http_proxy_host'):127            _log.debug("Using proxy ({0}://{1}:{2})".format(128                proxy_options.get('proxy_type') or "http",129                proxy_options.get('http_proxy_host'),130                proxy_options.get('http_proxy_port') or 80))131        _log.debug("Connecting: {0}".format(url))132        self._ws = websocket.WebSocketApp(133            url,134            header=["User-Agent: {0}".format(useragents.CHROME)],135            on_open=self.api_on_open,136            on_message=self.handle_api_message,137            on_error=self.api_on_error)138        self.ws_worker_thread = threading.Thread(139            target=self._ws.run_forever,140            args=proxy_options)141        self.ws_worker_thread.daemon = True142        self.ws_worker_thread.start()143    def send_message(self, type_, body):144        msg = {"type": type_, "body": body}145        msg_json = json.dumps(msg)146        _log.debug(u"Sending: {0}".format(msg_json))147        if self._ws and self._ws.sock.connected:148            self._ws.send(msg_json)149        else:150            _log.warning("wss api is not connected.")151    def send_no_body_message(self, type_):152        msg = {"type": type_}153        msg_json = json.dumps(msg)154        _log.debug(u"Sending: {0}".format(msg_json))155        if self._ws and self._ws.sock.connected:156            self._ws.send(msg_json)157        else:158            _log.warning("wss api is not connected.")159    def send_custom_message(self, msg):160        msg_json = json.dumps(msg)161        _log.debug(u"Sending: {0}".format(msg_json))162        if self._ws and self._ws.sock.connected:163            self._ws.send(msg_json)164        else:165            _log.warning("wss api is not connected.")166    def send_playerversion(self):167        body = {168            "type": "startWatching",169            "data": {170                "stream": {171                    "quality": "abr",172                    "protocol": "hls",173                    "latency": "high",174                    "chasePlay": False175                },176                "room": {177                    "protocol": "webSocket",178                    "commentable": True179                },180                "reconnect": False181            }182        }183        self.send_custom_message(body)184    def send_getpermit(self, require_new_stream=True):185        body = {186            "type": "getAkashic",187            "data": {188                "chasePlay": False189            }190        }191        self.send_custom_message(body)192    def send_watching(self):193        body = {194            "command": "watching",195            "params": [self.broadcast_id, "-1", "0"]196        }197        self.send_message("watch", body)198    def send_pong(self):199        self.send_no_body_message("pong")200        self.send_no_body_message("keepSeat")201    def handle_api_message(self, message):202        _log.debug(u"Received: {0}".format(message))203        message_parsed = json.loads(message)204        if message_parsed["type"] == "stream":205            data = message_parsed["data"]206            self.hls_stream_url = data["uri"]207            self.is_stream_ready = True208        if message_parsed["type"] == "watch":209            body = message_parsed["body"]210            command = body["command"]211            if command == "currentstream":212                current_stream = body["currentStream"]213                self.hls_stream_url = current_stream["uri"]214                self.is_stream_ready = True215            elif command == "watchinginterval":216                self.watching_interval = int(body["params"][0])217                _log.debug("Got watching_interval: {0}".format(218                    self.watching_interval))219                if self.watching_interval_worker_thread is None:220                    _log.debug("send_watching_scheduler starting.")221                    self.watching_interval_worker_thread = threading.Thread(222                        target=self.send_watching_scheduler)223                    self.watching_interval_worker_thread.daemon = True224                    self.watching_interval_worker_thread.start()225                else:226                    _log.debug("send_watching_scheduler already running.")227            elif command == "disconnect":228                _log.info("Websocket API closed.")229                _log.info("Stream ended.")230                self.is_stream_ended = True231                if self.stream_reader is not None:232                    self.stream_reader.close()233                    _log.info("Stream reader closed.")234        elif message_parsed["type"] == "ping":235            self.send_pong()236    def send_watching_scheduler(self):237        """238        Periodically send "watching" command to the API.239        This is necessary to keep the session alive.240        """241        while not self.is_stream_ended:242            self.send_watching()243            time.sleep(self.watching_interval)244    def niconico_web_login(self):245        user_session = self.get_option("user-session")246        email = self.get_option("email")247        password = self.get_option("password")248        if user_session is not None:249            _log.info("User session cookie is provided. Using it.")250            self.session.http.cookies.set(251                "user_session",252                user_session,253                path="/",254                domain="nicovideo.jp")255            self.save_cookies()256            return True257        elif email is not None and password is not None:258            _log.info("Email and password are provided. Attemping login.")259            payload = {"mail_tel": email, "password": password}260            resp = self.session.http.post(_login_url, data=payload,261                                          params=_login_url_params)262            _log.debug("Login response code: {0}".format(resp.status_code))263            _log.trace(u"Login response body: {0}".format(resp.text))264            _log.debug("Cookies: {0}".format(265                self.session.http.cookies.get_dict()))266            if self.session.http.cookies.get("user_session") is None:267                try:268                    msg = extract_text(269                        resp.text, '<p class="notice__text">', "</p>")270                except Exception as e:271                    _log.debug(e)272                    msg = "unknown reason"273                _log.warn("Login failed. {0}".format(msg))274                return False275            else:276                _log.info("Logged in.")277                self.save_cookies()278                return True279        else:280            _log.warn(281                "Neither a email and password combination nor a user session "282                "token is provided. Cannot attempt login.")283            return False284class NicoHLSStream(HLSStream):285    def __init__(self, hls_stream, nicolive_plugin):286        super(NicoHLSStream, self).__init__(287            hls_stream.session,288            force_restart=hls_stream.force_restart,289            start_offset=hls_stream.start_offset,290            duration=hls_stream.duration,291            **hls_stream.args)292        # url is already in hls_stream.args293        self.nicolive_plugin = nicolive_plugin294    def open(self):295        reader = super(NicoHLSStream, self).open()296        self.nicolive_plugin.stream_reader = reader297        return reader298def extract_text(text, left, right):299    """Extract text from HTML"""300    result = re.findall("{0}(.*?){1}".format(left, right), text)301    if len(result) != 1:302        raise Exception("Failed to extract string. "303                        "Expected 1, found {0}".format(len(result)))304    return result[0]305def parse_proxy_url(purl):306    """Adapted from UStreamTV plugin (ustreamtv.py)"""307    proxy_options = {}308    if purl:309        p = urlparse(purl)310        proxy_options['proxy_type'] = p.scheme311        proxy_options['http_proxy_host'] = p.hostname312        if p.port:313            proxy_options['http_proxy_port'] = p.port314        if p.username:315            proxy_options['http_proxy_auth'] = \316                (unquote_plus(p.username), unquote_plus(p.password or ""))317    return proxy_options...

client.py

Source:client.py

1import grpc2# classes generated by grpc3from .generated import eval_server_pb24from .generated import eval_server_pb2_grpc5# other imports6import numpy as np 7import time8from time import perf_counter9from datetime import datetime10# multiprocessing 11import multiprocessing as mp12from multiprocessing import shared_memory, resource_tracker13from threading import Thread14# suppress shared memory warnings15from .utils import remove_shm_from_resource_tracker16remove_shm_from_resource_tracker()17# receive input fidx streamed by server, store them in a list18def receive_stream(seq, latest_fidx, fid_ptr_dict, is_stream_ready, stream_start_time, config, verbose=False):19    if verbose:20        print("EvalClient (", datetime.now(), "): ", "Requesting stream for sequence ", seq)21    channel = grpc.insecure_channel(config['loopback_ip'] + ":" + str(config['image_service_port']))22    stub = eval_server_pb2_grpc.ImageServiceStub(channel)23    stream_request = eval_server_pb2.String(value=seq)24    send_times = []25    # receive input stream26    for i, response in enumerate(stub.GetImageStream(stream_request)):27        if i == 0:28            stream_start_time.value = perf_counter()29            if verbose:30                print("EvalClient (", datetime.now(), "): ", "Receiving stream for sequence ", seq) 31        if response.end_marker:32            latest_fidx.value = -133            break34        is_stream_ready.clear()35        latest_fidx.value = response.fid36        fid_ptr_dict[response.fid] = (response.start_ptr, response.end_ptr)37        if response.fid >= 0:38            is_stream_ready.set()39        send_times.append(perf_counter() - response.timestamp)40    # if verbose:41    #     print("EvalClient (", datetime.now(), "): ", "Mean sending time = ", np.mean(send_times), "s, stdev = ", np.std(send_times), "Max = ", np.max(send_times), "Min = ", np.min(send_times))42    channel.close()43class EvalClient:44    def __init__(self, config, state=None, verbose=False):45        self.img_width, self.img_height = 1920, 120046        if state is None:47            mp.set_start_method('spawn')48            self.latest_fidx = mp.Value('i', -1, lock=True)49            self.is_stream_ready = mp.Event()50            self.fid_ptr_dict = mp.Manager().dict()51            self.stream_start_time = mp.Value('d', 0.0, lock=True)52        else:53            self.latest_fidx = state[0]54            self.is_stream_ready = state[1]55            self.fid_ptr_dict = state[2]56        57        self.verbose = verbose58        # create image receiver stub59        self.channel = grpc.insecure_channel(config['loopback_ip'] + ":" + str(config['image_service_port']))60        self.config = config61        self.stub = eval_server_pb2_grpc.ImageServiceStub(self.channel)62        response = self.stub.GetShm(eval_server_pb2.Empty())63        self.existing_shm = shared_memory.SharedMemory(name=response.value)64        self.channel.close()65        # create result sender stub66        self.result_channel = grpc.insecure_channel(config['loopback_ip'] + ":" + str(config['result_service_port']))67        self.result_stub = eval_server_pb2_grpc.ResultServiceStub(self.result_channel)68        response = self.result_stub.GetShm(eval_server_pb2.Empty())69        self.results_shm = shared_memory.SharedMemory(name=response.value)70        self.results_np = np.ndarray((100, 6), dtype=np.float32, buffer=self.results_shm.buf)71        self.is_stream_ready.clear()72        self.stream_process = None73        self.result_thread = None74    def get_state(self):75        return (self.latest_fidx, self.is_stream_ready, self.fid_ptr_dict)76    def close(self, results_file='results.json'):77        self.result_stub.GenResults(eval_server_pb2.String(value=results_file))78        self.result_channel.close()79        self.existing_shm.close()80        self.results_shm.close()81    def stop_stream(self):82        self.stream_process.join()83        self.result_stub.FinishSequence(eval_server_pb2.Empty())84        self.is_stream_ready.clear()85        self.stream_process = None86    def request_stream(self, seq):87        # receiver as separate processs88        self.stream_process = mp.Process(target=receive_stream, args=(seq, self.latest_fidx, self.fid_ptr_dict, self.is_stream_ready, self.stream_start_time, self.config, self.verbose))89        self.stream_process.start()90    def get_latest_fidx(self):91        self.is_stream_ready.wait()92        return self.latest_fidx.value93    def get_frame(self, fid=None, ptr=False):94        if fid is not None and fid < 0:95            raise TypeError(f"fid must be non-negative")96        if fid is None:97            fid = self.get_latest_fidx()98            if fid == -1:99                return None, None100        elif fid not in self.fid_ptr_dict:101            raise KeyError(f"frame not available yet")102        start_ptr, end_ptr = self.fid_ptr_dict[fid]103        if ptr:104            return fid, int(start_ptr/(self.img_height*self.img_width*3))105        return fid, np.ndarray((self.img_height, self.img_width, 3), dtype=np.uint8, buffer=self.existing_shm.buf[start_ptr:end_ptr])106    def send_result_shm(self, bboxes, bbox_scores, labels, timestamp):107        num_detections = min(len(bboxes), 100)108        self.results_np[:num_detections, :4] = bboxes[:num_detections]109        self.results_np[:num_detections, 4] = bbox_scores[:num_detections]110        self.results_np[:num_detections, 5] = labels[:num_detections]111        self.result_stub.SignalResultsReady(eval_server_pb2.Result(timestamp=timestamp, num_bboxes=num_detections))112    def send_result_to_server(self, bboxes, bbox_scores, labels):113        timestamp = perf_counter()114        if self.result_thread:115            self.result_thread.join()116        self.result_thread = Thread(target=self.send_result_shm, args=(bboxes, bbox_scores, labels, timestamp))117        self.result_thread.start()118    def get_frame_buf(self):119        return self.existing_shm120    def get_stream_start_time(self):121        self.is_stream_ready.wait()...

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