Id3v2 tag APIC solved

**matt3011** · Sep 19th, 2002, 03:07 PM

I know how to retrieve the mime-type, the picture type, the description and the picture data. But how can i paint the picture ? I tried to save the data to a file, but it doesn't work...
Thanks in advance for any help.

**IROY55** · Sep 19th, 2002, 03:20 PM

To paint a picture use PaintPicture method.

**Mc Brain** · Sep 19th, 2002, 03:41 PM

Originally posted by IROY55
To paint a picture use PaintPicture method.

I don't think that would be of much help... since the information he has might not be compatible with PaintPicture.

Paste all the info in a file and try to rename it to .jpg, or .gif (I guess that would be the target types) and see if any Image Viewer can open it. That could give us a clue about the type of the fiel we're dealing with.

**IROY55** · Sep 19th, 2002, 03:45 PM

He asked a specific question: how to paint a puicture? I gave him an answer. So I am not sure why would you say that it "wouldn't be of much help... "

**Mc Brain** · Sep 19th, 2002, 03:48 PM

Originally posted by IROY55
He asked a specific question: how to paint a puicture? I gave him an answer. So I am not sure why would you say that it "wouldn't be of much help... "

Simple:

PaintPicture Method

Draws the contents of a graphics file (.bmp, .wmf, .emf, .cur, .ico, or .dib) on a Form, PictureBox, or Printer. Doesn't supportnamed arguments.

Syntax

object.PaintPicture picture, x1, y1, width1, height1, x2, y2, width2, height2, opcode

I guess MP3 files would save the image in a compress format like JPG or even GIF. None of those extension would be suitable for PaintPicture. You might need to convert them before trying to use it.

**Mc Brain** · Sep 19th, 2002, 03:50 PM

Originally posted by matt3011
I know how to retrieve the mime-type, the picture type....

Ok, it seems you already have this, so... what's the type of the picture?

**matt3011** · Sep 19th, 2002, 03:57 PM

Windows media player save it as image/bmp.
When i open the picture with psp7, i only have (bottom) part of the image. Don't know why. I make a link for my .bas

**Mc Brain** · Sep 19th, 2002, 04:02 PM

A simple comment about this:

VB Code:

Public Type Id3v1                 'This type is standard for
Title As String * 30            ' Id3 Tags
Artist As String * 30           ' Although later versions
Album As String * 30            ' use comments for 28 bytes
sYear  As String * 4            ' and they use the 2 remaining  bytes for "TrackNumber"!
Comments As String * 30
Genre As Byte
End Type

The remark about the comments is wrong. You need 28 bytes for the comments, a Chr(0) and a byte to set the track number (so you can set the track number up to 255)

**Mc Brain** · Sep 19th, 2002, 04:07 PM

Ok, I can see in the GetID3 function that you have this code:

VB Code:

Open "dessin.bmp" For Binary As #2
Put #2, , picture_data
Close #2

Can you post a zipped copy of this file so that I can see it?

**matt3011** · Sep 19th, 2002, 04:14 PM

The file doesn't exists originaly. It's the file i extract from the tag. I can't post the file i exctracted from my mp3, it's too large 140ko compressed

**Mc Brain** · Sep 19th, 2002, 04:16 PM

I know that the file was extracted from it. I wanted to see if I can open it. Can you upload it to any server?

**IROY55** · Sep 19th, 2002, 04:20 PM

McBrain,
I think you are missing something: by using PaintPicture you may practically load any type of image as long as Picturebox supportes it. Try this:
Picture1.AutoRedraw = True
Picture1.PaintPicture LoadPicture("c:\somefile.jpg"), 0, 0, Picture1.ScaleWidth, Picture1.ScaleHeight

**Mc Brain** · Sep 19th, 2002, 04:20 PM

Winrar might compressed to better. Or you can also split the file into two files.

**matt3011** · Sep 19th, 2002, 04:21 PM

I do can open it with psp.
Here is a link to the file :

**Mc Brain** · Sep 19th, 2002, 04:21 PM

Originally posted by IROY55
McBrain,
I think you are missing something: by using PaintPicture you may practically load any type of image as long as Picturebox supportes it. Try this:
Picture1.AutoRedraw = True
Picture1.PaintPicture LoadPicture("c:\somefile.jpg"), 0, 0, Picture1.ScaleWidth, Picture1.ScaleHeight

I haven't tried it. I thought what the MSDN should be true.

**IROY55** · Sep 19th, 2002, 04:23 PM

Don't bet on MSDN too much

**Mc Brain** · Sep 19th, 2002, 04:26 PM

If that's the file you get you can try with Iroy's code. Actually you don't even need the PaintPicture:

VB Code:

Option Explicit
 
Private Sub Form_Load()
    Picture1.AutoRedraw = True
    Picture1.Picture = LoadPicture("C:\dessin.bmp")
End Sub

**IROY55** · Sep 19th, 2002, 04:31 PM

PaintPicture is very usefull when you need to resize image to fit Picturebox's size, otherwise I agree: LoadPicture will do the job.

**matt3011** · Sep 19th, 2002, 04:42 PM

Actually, i found that the error isn't from painting picture but, i don't retieve enough data with my function.
I tried to modify the frame size manually and i can extract the entire file and paint it.
I don't know why the frame size calculated doesn't correspond to the actual size of the frame.

**matt3011** · Sep 19th, 2002, 05:01 PM

I found the problem. Frame size was calculated like ID3Tag size, but it shouldn't be.

**Mc Brain** · Sep 19th, 2002, 05:03 PM

GR8!!

Is it working now?

**matt3011** · Sep 19th, 2002, 05:34 PM

Yes it works pretty well,
I have a lot of work to do on this bas but I thonk it is a good start
Here is my .bas

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