Mp3Tags extension

jean-marc_Latour · November 23, 2020, 11:37am

There is a problem: The file i posted here was working, but it doesn't works any more..I have a runtime error !

someone have an idea of what happened ?
is something changes ans i have to modify in my extension ?

I tried it on my old phone and it return : "Attempt to invoke virtual method 'java.lang.String java.io.File..getAbsolutePath()' on a null object reference....but i have no .getAbsolutePath() in my code !

vknow360 · November 23, 2020, 12:00pm

Have you used FileUtil?

jean-marc_Latour · November 23, 2020, 12:01pm

no. what is it ?

vknow360 · November 23, 2020, 12:03pm

Maybe you don't have READ permission.

github.com

mit-cml/appinventor-sources/blob/master/appinventor/components/src/com/google/appinventor/components/runtime/util/FileUtil.java

// -*- mode: java; c-basic-offset: 2; -*-
// Copyright 2009-2011 Google, All Rights reserved
// Copyright 2011-2020 MIT, All rights reserved
// Released under the Apache License, Version 2.0
// http://www.apache.org/licenses/LICENSE-2.0

package com.google.appinventor.components.runtime.util;

import static android.Manifest.permission.READ_EXTERNAL_STORAGE;
import static android.Manifest.permission.WRITE_EXTERNAL_STORAGE;

import static java.nio.file.StandardCopyOption.REPLACE_EXISTING;

import android.annotation.SuppressLint;

import android.content.ContentResolver;
import android.content.ContentUris;
import android.content.ContentValues;

import android.content.res.AssetManager;

This file has been truncated. show original

jean-marc_Latour · November 23, 2020, 2:18pm

yes you were right...thanks

jean-marc_Latour · November 24, 2020, 8:50am

Here is version2 which use new app directory and so don't need to copy image file any more

jean-marc_Latour · November 24, 2020, 8:49am

There is an update of my extension to catch mp3' Tags.

you need READ_EXTERNAL_STORAGE to make it works.

you will find here :
-extension aix
-exemple aia
-source code iff it can be usefull for someone

jml.Mp3tags.aix (8.8 KB)
Mp3Tags.aia (67.2 KB)
Mp3Tags.txt (7.1 KB)

I hope you will enjoy !

Taifun · November 24, 2020, 4:55pm

please use your existing thread to post new versions...
I now merged the 2 threads...
you additionally could edit your first post and upload version 2 additionally there and update the documentation...
see also this thread as example about how to work with different versions [Paid] Alarm Manager Extension with Notification

Taifun

Trying to push the limits! Snippets, Tutorials and Extensions from Pura Vida Apps by Taifun.

jean-marc_Latour · November 25, 2020, 7:39am

but i cann't edit my firs post !
have a look:

Taifun · November 25, 2020, 1:10pm

please try again,
I changed your user settings, you are now trust level 2...
Taifun

jean-marc_Latour · November 25, 2020, 1:31pm

no..I can't !

Taifun · November 25, 2020, 1:43pm

sorry, I just found out, that trust level 2 only enables you to edit you own post up to 30 days after posting...
I now added a note into your first post ...

Taifun

jean-marc_Latour · November 25, 2020, 1:54pm

ok thank you

jean-marc_Latour · December 9, 2020, 9:47am

In order to complete my needs, I improve this extension.
you will find here version 3 with much more Tags to get and possibility to Edit most of them.

About Rating: All apps don't use same values. this is what i fond here https://www.mediamonkey.com/forum/viewtopic.php?t=40532&start=45

Rating   WMP 12           Win 8.1 Explor   Winamp v5.666    foobar2000 1.3.2   MediaMonkey 4.1.2.1706         Proposed reading
stars    writes (reads)   writes (reads)   writes (reads)   writes (reads)     writes (reads)                 for MediaMonkey
-------  ------------------------------------------------------------------------------------------------     ----------------

0        ---              ---              ---              ---                  0 (          0,     2-8)  |  0             0
0.5      ---              ---              ---              ---                 13 (       9-18,   30-39)  |  0.5        2-22
1          1    (1-31)      1    (1-31)      1    (1-31)      1    (1-32)        1 ( 1,   19-28,   40-49)  |  1      1, 23-31
1.5      ---              ---              ---              ---                 54 (29,   50-59,   70-90)  |  1.5       32-63
2         64   (32-95)     64   (32-95)     64   (32-95)     64   (33-96)       64 (      60-69,  91-113)  |  2         64-95
2.5      ---              ---              ---              ---                118 (    114-123, 134-141)  |  2.5      96-127
3        128  (96-159)    128  (96-159)    128  (96-159)    128  (97-159)      128 (    124-133, 142-167)  |  3       128-159
3.5      ---              ---              ---              ---                186 (             168-191)  |  3.5     160-195
4        196 (160-221)    196 (160-223)    196 (160-223)    196 (160-223)      196 (             192-218)  |  4       196-223
4.5      ---              ---              ---              ---                242 (             219-247)  |  4.5     224-254
5        255 (222-255)    255 (224-255)    255 (224-255)    255 (224-255)      255 (             248-255)  |  5           255

I built formulas to convert stras number (N) to Rate (R): R=(N-1)63+1 (doesn't work for 0)
And Rate to Number of stars : N=Round((0,0157060054B2+0,9974137071)*2)/2
you can find it in .aia

Group is use for you to sort your file's with some criterion of your choice

I hope you will enjoy.

Mp3Tags.aix (16,6 Ko)
Mp3Tags_v3.aia (86,3 Ko)
Mp3Tags.txt (7,1 Ko) (Source code)

jean-marc_Latour · March 25, 2021, 6:26pm

you will find here new version (v5)

i corrected a bug (it was not possible to create rating if it does'nt exist)
and i add some tags:

volume adjustment level . it allow you to store a value to corect volume on some songs
Last play date you can store here the system date when you listen the file in order to not listen always the same file.(be careful, this tag is not a standard ID3 tag ang will be not read out of your app)

[Mp3Tags_v5.aix (20,1 Ko)
Mp3Tags_v5.aia (92,1 Ko)
Mp3TagsV5.txt (32,5 Ko)

jean-marc_Latour · March 28, 2021, 4:02pm

I'm in trouble whith the extension : rating bar
All Extensions From AppyBuilder Community [FREE]
-taping the bar it is not possible to select zero star
-when i try to make it display half stars it doesn't works

is someone know a well orking extention or is able to make one ?

jean-marc_Latour · March 29, 2021, 11:50am

Rating is not standardized in ID3 standard. so each program has its own scale.
previously I tried to define formulas to translate rate to value to store (and reverse) but it doesn't works for all.
so in this version (6) i created a new block:

this one returns name of the last program which wrote a rating in the file (for exemple"Windows Media Player 9 Ser¿es")

when you change rating from this extension, it will be " AI Mp3Tags extension."

so with this you are able to use the good scale according to your files

Mp3Tags_v6.aix (20,6 Ko)
Mp3Tags_v6.aia (93,5 Ko)
Mp3TagsV6.txt (34,1 Ko)

rpapi · May 25, 2021, 7:09pm

Thank you so much for your work. It's first that i used without compiler errors. But there is a little "but": it doesn't run if i try to play a mp3 stream. Fortunately without errors also in this case but without retrive any data from the stream. I think it's for the nature of the get system that you had used in your software. So, the question is: there is a way to get ID3 TAG data from a streaming mp3 flow?
Thank yoy very much for your attention.

jean-marc_Latour · May 26, 2021, 6:47am

effectively my extension probably cannot get data from streaming: it reads informations in mp3 file and i have no idea from how streaming works...so i'm not able to extract data from streaming...

Mubin_A · February 19, 2022, 3:20pm

When i tried to get album art for list of mp3 files, we are getting same image for all the mp3 files.
Can you please resolve it?