decode

Decode nested variable-length JSON in ELM

由 丶灬走出姿态 提交于 2019-12-12 03:39:30
问题 I'm having trouble wrapping my head around decoding a bit complex JSON response in ELM. The JSON response structure(I have no control over it) doesn't match my application's data tree/model. What will the decoder code look like for this JSON ? I'm using NoRedInk's Json.Decode.Pipeline - http://package.elm-lang.org/packages/NoRedInk/elm-decode-pipeline/3.0.0/Json-Decode-Pipeline My project's Github repo - https://github.com/areai51/my-india-elm The JSON response - https://data.gov.in/node

Decode audio stream channels to multiple wavs using ffmpeg?

由 心已入冬 提交于 2019-12-12 03:16:24
问题 My goal is to decode an ac3 from avi to multiple wavs - one for each channel, using ffmpeg. Using ffmpeg.exe -i the.avi -c:a copy the.ac3 the.wav would decode it to a single wav, and typing the.wavs won't help... I know it can be done with other tools, but I want to know how it's achievable with ffmpeg. 回答1: From the docs: You can also extract each channel of an input to specific outputs; the following command extracts two channels of the INPUT audio stream (file 0, stream 0) to the

base64 encoding in javascript with bit shifting

由 独自空忆成欢 提交于 2019-12-12 03:03:32
问题 I have the following decode/encode routine. However, the encoding is not working properly (it should be printing "CMlaKA" not "ClaKA" to the console log). I think the problem is with the bit shifting, but I cant tell where. Here is a jsfiddle to explain https://jsfiddle.net/4yfrLv9y/16/ Here is the code (routine is run at the bottom) var consoleLine = "<p class=\"console-line\"></p>"; console = { log: function (text) { $("#console-log").append($(consoleLine).html(text)); } }; var Base64 = {

How to detect codeword length for LZW Decoding

由 佐手、 提交于 2019-12-12 03:02:52
问题 I'm writing a general LZW decoder c++ program and I'm having trouble finding documentation on the length (in bits) of codewords used. Some articles I've found say that codewords are 12bits long, while others say 16bits, while still others say that variable bit length is used. So which is it? It would make sense to me that bit length is variable since that would give the best compression (i.e. initially start with 9 bits, then move to 10 when necessary, then move to 11 etc...). But I can't

How to decode the H.264 video stream received from parcelfiledescriptor

由 ↘锁芯ラ 提交于 2019-12-12 02:48:51
问题 I'm creating an Android application of live video streaming between two android phone. I've already established a socket connection between these devices. I'm capturing video in one device and send the stream to other device but currently I just want to save in the receiver side mobile device and save it. I'm recording using MediaRecorder in one device , so to stream to the receiver I,m using parcelfiledescriptor object by setting the data Client side code mediaRecorder.setAudioSource

QR decoding barcode output symbols meaning

由 谁都会走 提交于 2019-12-12 02:48:27
问题 I have this output of a decoded QR barcode, does this code has a meaning or can I interpret these symbols to a meaningful output? Is there any algorithm to interpret the output of decoding QR? output: LWludGVydmlldy5zMy5hbWF6b25hd3MuY29tL 回答1: This string: LWludGVydmlldy5zMy5hbWF6b25hd3MuY29tL is a Base64 representation of: -interview.s3.amazonaws.com However, this is not related to QR Codes. The person who created that QR Code arbitrarily decided to encode its content as Base64. If you're

Retrieve nested jsonobjects

由 有些话、适合烂在心里 提交于 2019-12-12 00:15:56
问题 I am using Unity C# and want to retrieve data from a nested json object sent from my push notification. The json object looks like this: { "aps": { "badge":1 ,"sound":"default.mp3" ,"alert":"test my push" } ,"u":"{\"custom\":\"{\"gameid\":\"12345\"}\"} } I the retrieve the json like this: string payload = aboveJsonString; Hashtable table = (Hashtable)easy.JSON.JsonDecode(payload); Hashtable data = (Hashtable)easy.JSON.JsonDecode(table["u"].ToString()); Hashtable gamejson =(Hashtable)easy.JSON

oracle的case when的用法和decode函数的用法

由 送分小仙女□ 提交于 2019-12-11 23:45:32
oracle中，我们要使用case when时，要怎样使用 如下测试数据，我要把ClassId 的1变成一班，2变成二班，3变成三班，那sql要怎样写呢？ 1、case when的用法 -- oracle中case when的用法--- select A.StuName,A.GENDER,A.AGE,A.Joindate,A.Address, (case A.ClassID when 1 then '一班' when 2 then '二班' else '三班' end) ClassName from Student A; 执行后结果 那除了这个case when的用法，oracle还有什么更方法的函数处理这种情况，那就是我们要介绍的decode函数了 2、decode用法 select A.StuName,A.GENDER,A.AGE,A.Joindate,A.Address, (decode(A.ClassId,1,'一班',2,'二班',3,'三班','无')) ClassName from Student A; 执行后结果是 注意： 其中最后decode函数的跟case when的写法是差不多的，只是更简便，建议遇到这种情况，用decode函数 来源： CSDN 作者： 再见沐一丶 链接： https://blog.csdn.net/weixin_41940137

Youtube decipher signature not working as expected

由 牧云@^-^@ 提交于 2019-12-11 20:42:33
问题 Hi i am trying to decipher the signature present in youtube page.I passed the orginal signature to below function as its there in youtube html5player js(http://s.ytimg.com/yts/jsbin/html5player-en_US-vflr38Js6/html5player.js) .but this function just removes first and last two characters.Am i missing any steps please enlighten me.Thanks. var ar = { KF: function(a, b) { a.splice(0, b); }, Xm: function(a) { a.reverse(); }, BT: function(a, b) { var c = a[0]; a[0] = a[b % a.length]; a[b] = c; } };

Java: get frames from animated GIF without ImageReader

由 ╄→гoц情女王★ 提交于 2019-12-11 19:49:54
问题 I'm developing AppEngine application. One of it's features is splitting an animated .gif image into separate frames. I've searched a lot to find the way how to do it and finally found the solution. Unfortunately the solution is based on ImageReader and I cant use it on the server, because: javax.imageio.ImageReader is not supported by Google App Engine's Java runtime environment Are there any other ways to decode GIF-image without this class? 回答1: You should use Images Java API. You can find
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