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• Anomalie #4717 : Erreurs nombre d’argument des filtres

  9 avril 2021, par jluc -

  Oui c’est une erreur de squelette, mais SPIP d’ordinaire les détecte et signale proprement une erreur à l’internaute, auquel on ne demande pas de comprendre le fonctionnement de PHP et ses messages d’erreur, du moins pour les bases du codage SPIP. Ce serait bien de préserver autant que possible cette isolation de SPIP et de PHP.

  Catch l’exception argumentcouterror semble possible https://www.php.net/manual/fr/class.argumentcounterror.php

  Mais il y en a d’autres aussi : https://www.php.net/manual/fr/class.exception
  Plus PHP devient strict et plus les contrôles préventifs de SPIP sur le code SPIP doivent être stricts aussi...

• When I try to play my Music Discord Bot it doesn't play music

  1er juin 2020, par EthanDevelops

  When I try to play my Music Discord Bot it doesn't play music. It uses ytdl-core and ffmpeg
My code is :

  



  const Discord = require('discord.js');
const bot = new Discord.Client

const ytdl = require("ytdl-core")


const token = 'API TOKEN'

const PREFIX = '?';

var version = '1.2';

var servers = {};

bot.on('ready', () =>{
    console.log('This bot is online!' + version);
})

bot.on('message', message => {

    let args = message.content.substring(PREFIX.length).split(" ");

    switch(args[0]){
        case 'play':

            function play(connection, message){
                var server = servers[message.guild.id];

                server.dispatcher = connection.play(ytdl(server.queue[0], {filter: "audioonly"}))

                server.queue.shift();

                server.dispatcher.on("end", function(){
                    if(server.queue[0]){
                        play(connection, message);
                    }else {
                        connection.disconnect();
                    }
                });



            }



            if(!args[1]){
                message.channel.send("You need to provide a link!")
                return;
            }

            if(!message.member.voice.channel){
               message.channel.send("You must be in a Voice Channel to play the bot!")
               return;
            }

            if(!servers[message.guild.id]) servers[message.guild.id] = {
                queue: []
            }

            var server = servers[message.guild.id];

            server.queue.push(args[1]);

            if(!message.guild.voice) message.member.voice.channel.join().then(function(connection){
                play(connection, message);
            })

        break;
    }



    });


    bot.login(token);


  



  Whenever I try to play a song this error happens :

  



  


  (node:5180) UnhandledPromiseRejectionWarning : Error : FFmpeg/avconv not
 found !
 at Function.getInfo (C :\Users\picar\Desktop\DiscordMusicBot\node_modules\prism-media\src\core\FFmpeg.js:130:11)
 at Function.create (C :\Users\picar\Desktop\DiscordMusicBot\node_modules\prism-media\src\core\FFmpeg.js:143:38)
 at new FFmpeg (C :\Users\picar\Desktop\DiscordMusicBot\node_modules\prism-media\src\core\FFmpeg.js:44:27)
 at AudioPlayer.playUnknown (C :\Users\picar\Desktop\DiscordMusicBot\node_modules\discord.js\src\client\voice\player\BasePlayer.js:47:20)
 at VoiceConnection.play (C :\Users\picar\Desktop\DiscordMusicBot\node_modules\discord.js\src\client\voice\util\PlayInterface.js:71:28)
 at play (C :\Users\picar\Desktop\DiscordMusicBot\index.js:29:48)
 at C :\Users\picar\Desktop\DiscordMusicBot\index.js:66:17
 at processTicksAndRejections (internal/process/task_queues.js:97:5)
 (node:5180) UnhandledPromiseRejectionWarning : Unhandled promise rejection. This error originated either by throwing inside of an async
 function without a catch block, or by rejecting a promise which was
 not handled with .catch(). To terminate the node process on unhandled
 promise rejection, use the CLI flag --unhandled-rejections=strict
 (see https://nodejs.org/api/cli.html#cli_unhandled_rejections_mode).
 (rejection id : 1)
 (node:5180) [DEP0018] DeprecationWarning : Unhandled promise rejections are deprecated. In the future, promise rejections that are
 not handled will terminate the Node.js process with a non-zero exit
 code

  


  



  I'm getting very frustrated as the tutorial I'm watching is using a different version of everything !!! Please help.

  


• libav/ffmpeg : avcodec_decode_video2() returns -1 when separating demultiplexing and decoding

  26 avril 2013, par unbekannt

  I'm using libav (from a C++ program on Linux and Windows) to decode video streams from a file, which works fine (decoding various formats like H264 and MPEG2) using avformat_open_input(), av_read_frame() and avcodec_decode_video2().

  Now I have to separate demultiplexing and decoding. One class will call avformat_open_input() and av_read_frame() and then pass the AVPackets into a queue that is read by another class. There I use avcodec_alloc_context3() to get the AVCodecContext needed for avcodec_decode_video2(). I've tested that with a MPEG2 video stream and it works.

  Problems arise if I try to decode a H264 stream : avcodec_decode_video2() always returns -1 and outputs "no frame". I understand that additional data (SPS/PPS) is needed to decode this stream, so I've tried to replicate the original AVCodecContext from the demultiplexer in the decoder, but it won't work :

  • Copying the content of the extradata field and setting all other values that differ from the default ones in the decoder : -1 is returned
  • Using the same context (i.e. passing along the pointer) results in a crash

  I also tried to set CODEC_FLAG2_CHUNKS. avcodec_decode_video2() then always returns packet.size - 3 (??) and frameFinished is never set to 1.

  In my opinion I have a general problem here that will arise whenever settings from the original CodecContext are needed to decode the AVPackets. I'd be grateful for any hints on how to solve that problem !

  EDIT : Sometimes writing down your problem helps solving it... Using a copy of the context struct (avcodec_copy_context) and opening the codec only after receiving the copy results in decoded frames. Does anyone know if that is safe or the best way to do it ?