volume

Android setStreamVolume for STREAM_RING doesn't always work while RINGING

末鹿安然 提交于 2019-12-07 22:49:47
问题 I am trying to do this simple App that allows the phone to ring but not to play a sound when receiving notifications under Android 4 (ICS). In order to do that I set the ring/notification stream to 0 (mute). When receiving a call I set the ring volume to max (p.e. 7) and then, on Idle, I turn it back to 0 (mute). To do that I use this simple code. public class ReceiverClass extends BroadcastReceiver { @Override public void onReceive(Context context, Intent intent) { if ("android.intent.action

Control Volume in vb.net

邮差的信 提交于 2019-12-07 19:39:26
I need to control the main computer volume in vb.net. I have searched the web and tried all the examples I could find. None of the have worked. Does anyone have some snippets of code that work with vb.net 2010 to control volume? Thanks giodamelio I know this question is really old, but this worked for me: http://www.dotnetcurry.com/showarticle.aspx?ID=431 Imports System Imports System.Windows.Forms Imports System.Runtime.InteropServices Namespace WindowsFormsApplication1 Partial Public Class Form1 Inherits Form Private Const APPCOMMAND_VOLUME_MUTE As Integer = &H80000 Private Const APPCOMMAND

How to change volume with Python?

被刻印的时光 ゝ 提交于 2019-12-07 18:23:11
问题 I'm writing a program to wake me up mornings, but I want my program to play alarm sound as loud as its possible. so it needs to raise up volume to 100%. but I don't know how. I'm using python3 on macOS Sierra. 回答1: You can control the volume of your computer with Applescript: set volume output volume 100 To execute Applescript from python you can use py-applescript which can be installed with sudo easy_install py-applescript . The following script will set the volume: import applescript

Surface mesh to volume mesh

99封情书 提交于 2019-12-07 16:27:30
问题 I have a closed surface mesh generated using Meshlab from point clouds. I need to get a volume mesh for that so that it is not a hollow object. I can't figure it out. I need to get an *.stl file for printing. Can anyone help me to get a volume mesh? (I would prefer an easy solution rather than a complex algorithm). 回答1: Given an oriented watertight surface mesh, an oracle function can be derived that determines whether a query line segment intersects the surface (and where): shoot a ray from

Docker Volume Plugin 开发及Golang实现

拟墨画扇 提交于 2019-12-07 14:04:19
原文地址: http://www.damonyi.cc/?p=232 前期的项目需求,需要合理利用宿主机的存储,利用在宿主机部署Agent的方式,实现了基于LVM分配Docker数据卷的方式,随着开发的进行,项目想要集成docker compose 完成应用的自动编排,需要在docker compose中为容器创建数据卷并且指定卷大小,之前的采用agent的模式已经无法满足目前的需求。参考 docker 官方文档 和 Local-Persist 项目,实现了一个基于LVM的volume 插件 docker-volume-plugin-lvm 。 Docker Volume Plugin 提供了标准的卷管理API,第三方只需要实现这些API就可以了。 插件加载方式,将自己实现的Driver注册,启动main函数,实际上是启动了一个监听端口,sock文件:/var/run/docker/plugins/LVM.sock func main() { driver := NewLvmPersistDriver() handler := volume.NewHandler(driver) fmt.Println(handler.ServeUnix("root", driver.Name)) } 查询卷API: func (driver *LvmPersistDriver) Get(req

有容云——窥探Docker中的Volume Plugin内幕

微笑、不失礼 提交于 2019-12-07 13:57:41
编者注: 本文根据有容云技术实施团队原创分享内容整理。对Docker技术感兴趣、或对本文中细节需继续探讨的朋友,欢迎加入我们参与讨论! 特别鸣谢中生代技术群分享支持。 注:本期分享由张朝潞原创,有容云整理发布,转载请注明出处 作者介绍: 张朝潞,有容云(Yourun Cloud)平台存储架构师。曾工作于UIT,华三,腾讯,专注分布式存储的研究和开发,对云计算存储解决方案方面有很深的技术造诣和行业理解。 本次交流将与大家分享Docker Volume plugin相关的内容。今日主题是窥探Docker中的Volume plugin内幕。 因为应用数据对安全,可用性,共享,性能等方面的要求和Root Image的要求完全不一样,所以Docker并不推荐采用Root Image的存储方式来存储应用数据,而是采用了Volume这样一个独立的数据访问接口。 应用通过Volume去访问相关的数据,Volume的实现和CoW的分层文件系统完全独立,通过Volume plugin机制可轻易驱动外部存储。 下面我们就围绕Volume Plugin Introduction、Container and Volume、Docker Volume Plugin、自定义Volume Plugin四个方面来展开。 一. Volume Plugin Introduction 通过Volume机制

Correct audio volume output decibels using HTML5 / javascript, turn off pre-processing

时光毁灭记忆、已成空白 提交于 2019-12-07 12:07:03
问题 We have observed that using javascript-based audio from a browser, the output level is not correctly linearly proportional to the input signal level on many systems. For example, if you 'play' two sin waves with amplitude varying by 20dB, the resultant difference from different devices/settings may be markedly different from 20dB, e.g. as far off as 10dB or less. We need to put out simple audio signals (e.g. sin waves) at calibrated decibel levels relative to each other, for example put out

Windows/Mac下的Docker,如何把Windows的目录映射到容器里,有个小坑

匆匆过客 提交于 2019-12-07 09:26:29
Windows/Mac OS X下的docker是运行在一个Linux虚拟机的, 在这个虚拟机里,运行多个容器。三层啊,真不爽,什么事儿都是隔山跨水的,现在事儿就来了,容器里会报错说找不到被映射过来的文件。 拿Windows举例,有个目录叫做 C:¥WinTestDir ,放了几个文件,现在运行一个容器例如busybox,试图把这个目录映射到容器里的 /xxx/yyy目录下,无论以C:¥WinTestDir还是 /c/WindowsDir 还是 /WindowsDir 都没有效果。 docker run -it -v C:¥WinTestDir:/xxx/yyy busybox 结果会提示说"和:非法字符。 docker run -it -v /WinTestDir:/xxx/yyy busybox docker run -it -v /c/WinTestDir:/xxx/yyy busybox 结果容器里的/xxx/yyy目录下是空的。 这时一般都会意识到,这个冒号左边的目录实际上得是那个虚拟机里存在的目录才行,那么哪些目录被映射到虚拟机里了呢?Docker的文档里写了, Windows系统: C:¥Users -> /c/Users Mac OS X系统: /Users -> /Users 其它的目录压根没被映射进去,跟别提之后往容器里映射了。 docker-machine

How to cross fade between AVAudioPlayers

浪子不回头ぞ 提交于 2019-12-07 08:28:52
问题 I want to use AVAudioPlayer and cross fade more than 2 mp3 files. I have 5 mp3 files and 5 pages "myScrollView" with UIScrollView class and pagingEnabled = YES. When user move page, I want to play each songs for each page with volume fade out for previous mp3 file and fade in for next mp3. Please help this problem. 回答1: This is not cross fading operation. But, this can fade-in/out one at a time with new thread using NSOperation and fade-in/out effects can be added to the thread in any order.

Marching Cube Question

£可爱£侵袭症+ 提交于 2019-12-07 04:32:07
问题 i currently writing a program to implement Marching Cube using C++ and Opengl. However, my best reference is only from http://local.wasp.uwa.edu.au/~pbourke/geometry/polygonise/ in the web, the provided codes are written in C. my problem here is that i don't understand the triTable and edgeTable and how they are related. can anyone help me on the explanation or guide me on converting the algorithm into codes? 回答1: These Tables are used for finding out how to tesselate the surface: The first