capture

问题 I'm doing a webview application. I have a form on my site and an image upload process is required via the form. It works fine on some android versions: I press file input, open the camera / gallery and upload the picture. In some versions, it returns the intent value as null (in onActivityResult) and opens the gallery directly without opening the camera. Versions not working (I don't know all): Android 10, Android 7. Running versions: Android 9, Android 5. Im just back-end web developer, im

问题 i will record the sound from my programs. I use Ubuntu 14.04 and PulseAudio. Now i try to record from pulseaudio but currently i'm only recording from my microphone. How can i record the sound from pulseaudio instead of my microphone? public static void captureAudio() { try { final AudioFormat format = getFormat(); DataLine.Info info = new DataLine.Info(TargetDataLine.class, format); final TargetDataLine line = (TargetDataLine) AudioSystem.getLine(info); line.open(format); line.start();

问题 preg_split has an optional PREG_SPLIT_DELIM_CAPTURE flag, which also returns all delimiters in the returned array. mb_split does not. Is there any way to split a multibyte string (not just UTF-8, but all kinds) and capture the delimiters? I'm trying to make a multibyte-safe linebreak splitter, keeping the linebreaks, but would prefer a more genericaly usable solution. Solution Thanks to user Casimir et Hippolyte, I built a solution and posted it on github (https://github.com/vanderlee/PHP

问题 Is there any function in OpenCV or Emgu CV desktop capture options? (addons, libs, classes) So I know we can capture camera in a very easy way, is there any option for desktop capturing that way? 回答1: I would recommend doing a screen capture outside of Emgu (ie, in non-Emgu C++/C#). The first step is to create a bitmap from the screen image. There are plenty of websites detailing methods of how to do this. I found this one helpful. Once you have a bitmap, it's easy to create new Emgu Image<,>

问题 Is there any function in OpenCV or Emgu CV desktop capture options? (addons, libs, classes) So I know we can capture camera in a very easy way, is there any option for desktop capturing that way? 回答1: I would recommend doing a screen capture outside of Emgu (ie, in non-Emgu C++/C#). The first step is to create a bitmap from the screen image. There are plenty of websites detailing methods of how to do this. I found this one helpful. Once you have a bitmap, it's easy to create new Emgu Image<,>

问题 I want to capture OS system audio output with Electron desktopcapturer, it works well in Windows as following: constraints = { // audio: false, audio: { mandatory: { chromeMediaSource: 'desktop' } }, video: { mandatory: { chromeMediaSource: 'desktop' //maxFrameRate: 15 }, } then, I use: navigator.webkitGetUserMedia(constraints, function(dstream) {... However, in Ubuntu, it always shows "could not start audio source". Can anyone tell me how to do? Thanks for your help. 回答1: Leaving my answer

来源： https://stackoverflow.com/questions/60401789/visual-studio-c-sharp-capture-screen-to-print-and-or-also-save-as-pdf-showing-un

来源： https://stackoverflow.com/questions/60401789/visual-studio-c-sharp-capture-screen-to-print-and-or-also-save-as-pdf-showing-un

来源： https://stackoverflow.com/questions/60401789/visual-studio-c-sharp-capture-screen-to-print-and-or-also-save-as-pdf-showing-un

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