real-time

Capture the output from function in real time python

吃可爱长大的小学妹 提交于 2020-07-19 11:15:26
问题 I didn't find quite what I was looking for. I want to obtain the output (stdout) from a python function in real time. The actual problem is that I want to plot a graph (with cplot from sympy) with a progress bar in my UI. The argument verbose makes cplot output the progress to stdout. sympy.mpmath.cplot(lambda z: z, real, imag, verbose=True) The output would be something like: 0 of 71 1 of 71 2 of 71 ... And so on. I want to capture line by line so I can make a progress bar. (I realize this

Real-time audio signal processing using python

蹲街弑〆低调 提交于 2020-07-04 13:51:31
问题 I have been trying to do real-time audio signal processing using 'pyAudio' module in python. What I did was a simple case of reading audio data from microphone and play it via headphones. I tried with the following code(both Python and Cython versions). Thought it works but unfortunately it is stalls and not smooth enough. How can I improve the code so that it will run smoothly. My PC is i7, 8GB RAM. Python Version import pyaudio import numpy as np RATE = 16000 CHUNK = 256 p = pyaudio.PyAudio

how to read multiple serial ports in realtime in C or Python

风流意气都作罢 提交于 2020-06-28 04:06:12
问题 I need to read multiple (at least 2) serial ports (currently two ports on a FT2232H module connected through USB). I am using it to monitor a serial connections, so the two ports have their RX connected in parallel to RX and TX of the serial I need to monitor. Setup is very similar to this. I am setting up ports like this: #define waitTime 0 int start_dev(const int speed, const char *dev) { int fd = open(dev, O_RDWR | O_NOCTTY |O_NONBLOCK| O_NDELAY); int isBlockingMode, parity = 0; struct

AWS HTTP API to WebSocket API Bridge / Async Lambda

。_饼干妹妹 提交于 2020-06-12 08:02:43
问题 I'd really appreciate any advice on the following. Building a real-time infrastructure for android mobile devices to connect to windows POS systems. POS system will run a .NET app that will connect to AWS WebSocket API Gateway and register with a storeId. Android device will call an AWS HTTP API Gateway endpoint to retrieve POS information from the store. Here's the part I'm not sure about. I'd like the AWS HTTP endpoint to trigger a lambda function that will lookup the websocket connectionId

How to use MongoDB change streams with node js via a REST API microservice (built with Express)

大兔子大兔子 提交于 2020-05-31 04:43:42
问题 I'm using react js for building frontend for a website. An express server (which is a microservice) sits in between the front end and MongoDB. I make Axios calls from react js to express server (URL = http://localhost:5688/chat ) using GET, POST, PUT whenever and wherever needed. something like below Client side var resp = axios.get(`http://localhost:5688/chat`); resp.then((response) => { this.setState({data: response.data}) }) Server side app.js var app = express(); app.get('/chat', function

How to use K.get_session in Tensorflow 2.0 or how to migrate it?

夙愿已清 提交于 2020-05-29 02:30:10
问题 def __init__(self, **kwargs): self.__dict__.update(self._defaults) # set up default values self.__dict__.update(kwargs) # and update with user overrides self.class_names = self._get_class() self.anchors = self._get_anchors() self.sess = K.get_session() RuntimeError: get_session is not available when using TensorFlow 2.0. 回答1: Tensorflow 2.0 does not expose the backend.get_session directly any more but the code still there and expose for tf1. https://github.com/tensorflow/tensorflow/blob/r2.0

How to use K.get_session in Tensorflow 2.0 or how to migrate it?

偶尔善良 提交于 2020-05-29 02:29:44
问题 def __init__(self, **kwargs): self.__dict__.update(self._defaults) # set up default values self.__dict__.update(kwargs) # and update with user overrides self.class_names = self._get_class() self.anchors = self._get_anchors() self.sess = K.get_session() RuntimeError: get_session is not available when using TensorFlow 2.0. 回答1: Tensorflow 2.0 does not expose the backend.get_session directly any more but the code still there and expose for tf1. https://github.com/tensorflow/tensorflow/blob/r2.0

How to show incoming video call using react native agora

℡╲_俬逩灬. 提交于 2020-05-17 08:31:12
问题 I want to add real time calling feature in my react native app. I am using agora with socket.io to make it real time and it's working fine when app is in foreground, but I am stuck when app is closed because socket does not work when app is closed I want to show WhatsApp like incoming call screen. Kindly help me. Thanks in advance. 回答1: You can check out this library: https://github.com/react-native-webrtc/react-native-callkeep It uses callkit on the ios side and connection service on the

Using gcloud speech api for real-time speech recognition in dart, flutter

↘锁芯ラ 提交于 2020-05-13 08:00:28
问题 I want to use Google's real-time speech recognition api in a flutter project, written in dart. I've activated a gcloud account, created the api key (which should be the only necessary authentication method for google speech) and written a basic apk which ought to send an audio stream to Google cloud and display the response. I imported the googleapis/speech and googleapis_auth plugin. But I couldn't figure out how to set it up. They say you have to use gRPC, which makes sense as it should

Using gcloud speech api for real-time speech recognition in dart, flutter

给你一囗甜甜゛ 提交于 2020-05-13 07:59:05
问题 I want to use Google's real-time speech recognition api in a flutter project, written in dart. I've activated a gcloud account, created the api key (which should be the only necessary authentication method for google speech) and written a basic apk which ought to send an audio stream to Google cloud and display the response. I imported the googleapis/speech and googleapis_auth plugin. But I couldn't figure out how to set it up. They say you have to use gRPC, which makes sense as it should