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Corrupt JPEG data: 90 extraneous bytes before mark 7 years 4 months ago #11534

Shades Topic Author Offline User is blocked Posts: 37 Thank you received: 0	Hello, I have a strange issue,after adding the bitmap to the pdf : Corrupt JPEG data: 90 extraneous bytes before marker Any idea please ? Thank you
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Corrupt JPEG data: 90 extraneous bytes before mark 7 years 4 months ago #11538

support Offline Administrator Posts: 690 Thank you received: 59	Where are you receiving that error string from? May you provide us your corrupted file? Which RadaeePDF SDK version are you adopting?
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Corrupt JPEG data: 90 extraneous bytes before mark 7 years 4 months ago #11539

Shades
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Thank you received: 0

Hello,
Well,I got that error with all pdf I use.I use the last version of Radaee 3.7. it's after adding a bitmap to the pdf.

- (NSData *)vAddImage:(NSString*)sPath imageView:(CGRect)frame path:(NSString *)path page:(int)p
{
    struct PDFV_POS pos1;
    struct PDFV_POS pos2;
    [m_view vGetPos:&pos1 :frame.origin.x * m_scale :frame.origin.y * m_scale];
    [m_view vGetPos:&pos2 :(frame.origin.x + frame.size.width) * m_scale :(frame.origin.y + frame.size.height) * m_scale];
   PDF_RECT rect =_rect;
    rect.left = pos1.x;
    rect.right = pos2.x;
    rect.top = pos2.y;
    rect.bottom = pos1.y;
    NSString *tp = NSTemporaryDirectory();
    tp = [tp stringByAppendingPathComponent:@"cache.dat"];
    [m_doc setCache:tp];
    PDFPage *page = [m_doc page:p];
    PDFDocImage *i = [m_doc newImageJPEG:sPath];
    [page addAnnotBitmap:i :&(_rect)];
    [m_view vRenderSync:p];
    [self refresh];
    [m_doc save];
    NSData *pdfData = [[NSFileManager defaultManager]contentsAtPath:path];
    return pdfData;
}

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Corrupt JPEG data: 90 extraneous bytes before mark 7 years 4 months ago #11540

support Offline Administrator Posts: 690 Thank you received: 59	I'm forwarding your post to dev team. I've one missing answer: which application or framework are you testing to retrive "Corrupt JPEG data: 90 extraneous bytes before marker"? We'd like to completely reproduce your environment.
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Corrupt JPEG data: 90 extraneous bytes before mark 7 years 4 months ago #11552

Shades
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Posts: 37
Thank you received: 0

Hello,
Thank you a lot for your reply.
I got the point.! When I try to retrieve the NSData from the image I get that issue of the corrupt JPEG.

  NSData *data =UIImagePNGRepresentation(sPreview.image);
  [data  writeToFile:filePath options:NSDataWritingAtomic error:&error];
  [m_view vAddImage:imgPath frame:frame  path:filePath  page:page];// the function of the last post

However with

UIImageJPEGRepresentation(sPreview.image, 1);

I don't get that problem.But it doesn't keep the transparency of the image.
Any idea how I can add a bitmap with keeping its transparent background ?

Thank you for your help

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Corrupt JPEG data: 90 extraneous bytes before mark 7 years 4 months ago #11555

support
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Administrator
Posts: 690
Thank you received: 59

JPEG images are stored with RGB pixels and don't allow transparencies.

To store/retrive alpha channel jpeg2000 should be your choice but it's not simple as actual operating system (iOS, Android) don't expose native API to handle such a format.
en.wikipedia.org/wiki/JPEG_2000#Side_cha..._spatial_information

If you've no size constrains you should add new image without any compression.

Note about JPEG2000: it's really CPU intensive.

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