Skip to main content
S
shanlyticketsolve
Inspiring
December 15, 2011
Answered

ANE, iOS and BitmapData

  • December 15, 2011
  • 3 replies
  • 4726 views

Is there any example of passing bitmap data into iOS and returning a modfified copy. I am trying to convert a bitmap into jpeg - similar to this example in Windows http://blog.magicalhobo.com/2011/09/12/air-3-native-extension-imageprocessor/ but it crashed every time. I am pretty sure I am doing something basic wrong but not been an iOS / Objective C programmer I am really just trying magic incantations and I can't find any good examples. Any help appreciated?

   

Sean

 

P.S. Below is my attempt:

 

FREObject encodeJPEG(FREContext ctx, void* funcData, uint32_t argc, FREObject argv[])

{

     FREObject     objectBitmapData = argv[0];

     FREBitmapData bitmapData;

     

     FREAcquireBitmapData(objectBitmapData, &bitmapData);

     

     int width       = bitmapData.width;

     int height      = bitmapData.height;

     int stride      = bitmapData.lineStride32 * 4;

     uint32_t* input = bitmapData.bits32;

     

     FREReleaseBitmapData(objectBitmapData);

     

     

     UIImage *myImage = [UIImage imageWithData:input];

     NSData *jpgData  = UIImageJPEGRepresentation(myImage, 0.9);    

 

     FREObject    objectByteArray = argv[1];

     FREByteArray byteArray;

     

     FREObject length;

     

     FRENewObjectFromUint32(jpgData.length, &length);

     

     FRESetObjectProperty(objectByteArray, (const uint8_t*) "length", length, NULL);

     

     FREAcquireByteArray(objectByteArray, &byteArray);

     

     memcpy(byteArray.bytes, jpgData.bytes, jpgData.length);

     FREReleaseByteArray(objectByteArray);

         

     return NULL;

}

 

This topic has been closed for replies.
Correct answer shanlyticketsolve

Finale version - seems to work ok - encodes ok and I think cleans up after itself ok.

Sean

FREObject encodeJPEG( FREContext ctx, void* funcData, uint32_t argc, FREObject argv[] )

{

    FREObject       objectBitmapData = argv[ 0 ];

    FREBitmapData2  bitmapData;

   

    FREAcquireBitmapData2( objectBitmapData, &bitmapData );

   

    int width       = bitmapData.width;

    int height      = bitmapData.height;

    int stride      = bitmapData.lineStride32 * 4;

    uint32_t* input = bitmapData.bits32;

   

    // make data provider from buffer

    CGDataProviderRef provider = CGDataProviderCreateWithData(NULL, bitmapData.bits32, (width * height * 4), NULL);

   

    // set up for CGImage creation

    int                     bitsPerComponent    = 8;

    int                     bitsPerPixel        = 32;

    int                     bytesPerRow         = 4 * width;

    CGColorSpaceRef         colorSpaceRef       = CGColorSpaceCreateDeviceRGB();   

    CGBitmapInfo            bitmapInfo;

    if( bitmapData.hasAlpha )

    {

        if( bitmapData.isPremultiplied )

            bitmapInfo = kCGBitmapByteOrder32Little | kCGImageAlphaPremultipliedFirst;

        else

            bitmapInfo = kCGBitmapByteOrder32Little | kCGImageAlphaFirst;           

    }

    else

    {

        bitmapInfo = kCGBitmapByteOrder32Little | kCGImageAlphaNoneSkipFirst; 

    }

   

    CGColorRenderingIntent  renderingIntent     = kCGRenderingIntentDefault;

    CGImageRef              imageRef            = CGImageCreate(width, height, bitsPerComponent, bitsPerPixel, bytesPerRow, colorSpaceRef, bitmapInfo, provider, NULL, NO, renderingIntent);

    // make UIImage from CGImage

    UIImage *myImage = [UIImage imageWithCGImage:imageRef];   

    NSData* jpgData  = UIImageJPEGRepresentation( myImage, 0.9 );   

    FREReleaseBitmapData( objectBitmapData );

    FREObject    objectByteArray = argv[ 1 ];              

    FREByteArray byteArray;

    FREObject    length;

   

    FRENewObjectFromUint32( jpgData.length, &length );

    FRESetObjectProperty( objectByteArray, ( const uint8_t* ) "length", length, NULL );

    FREAcquireByteArray( objectByteArray, &byteArray );

   

    memcpy( byteArray.bytes, jpgData.bytes, jpgData.length );

   

    FREReleaseByteArray( objectByteArray );

       

    // release bits

    CGColorSpaceRelease(colorSpaceRef);

    CGImageRelease(imageRef);

    CGDataProviderRelease(provider);   

    return NULL;

}

3 replies

A
Anonymous
February 11, 2012

Hi Sean,

this is exactly what I've been looking for. Do you have any plans to do a proper release with an ane and perhaps a sample of how to use it?

cheers,

Otto

ps. it would be really sweet if it was possible to supply a width and height argument as well so that you could resize images.

User Unknow
User Unknow
Legend
February 12, 2012

Why you want use ANE ? this convertation may be you can do in AS ? Don't thinkg about that?

Innovatology
Innovatology
Participating Frequently
February 12, 2012

Because doing it C is much, much faster.

S
shanlyticketsolveAuthor
Inspiring
December 16, 2011

This kinda works except reds are blues in jpeg and not sure I am releasing everything ok.

Thats tomorrows battle.

Sean

    FREObject encodeJPEG( FREContext ctx, void* funcData, uint32_t argc, FREObject argv[] ) 

    {

     FREObject       objectBitmapData = argv[ 0 ];

     FREBitmapData2  bitmapData;

   

     FREAcquireBitmapData2( objectBitmapData, &bitmapData );

   

     int width       = bitmapData.width;

     int height      = bitmapData.height;

     int stride      = bitmapData.lineStride32 * 4;

     uint32_t* input = bitmapData.bits32;

   

     // make data provider from buffer

     CGDataProviderRef provider = CGDataProviderCreateWithData(NULL, bitmapData.bits32, (width * height * 4), NULL);

   

     // set up for CGImage creation

     int                     bitsPerComponent    = 8;

     int                     bitsPerPixel        = 32;

     int                     bytesPerRow         = 4 * width;

     CGColorSpaceRef         colorSpaceRef       = CGColorSpaceCreateDeviceRGB();

     CGBitmapInfo            bitmapInfo          = kCGBitmapByteOrderDefault | kCGImageAlphaPremultipliedFirst;

     CGColorRenderingIntent  renderingIntent     = kCGRenderingIntentDefault;

     CGImageRef              imageRef            = CGImageCreate(width, height, bitsPerComponent, bitsPerPixel, bytesPerRow, colorSpaceRef, bitmapInfo, provider, NULL, NO, renderingIntent);

       

     // make UIImage from CGImage

     UIImage *myImage = [UIImage imageWithCGImage:imageRef];   

     NSData* jpgData  = UIImageJPEGRepresentation( myImage, 0.9 );   

     FREReleaseBitmapData( objectBitmapData );

     FREObject    objectByteArray = argv[ 1 ];              

     FREByteArray byteArray;

     FREObject    length;

   

     FRENewObjectFromUint32( jpgData.length, &length );

     FRESetObjectProperty( objectByteArray, ( const uint8_t* ) "length", length, NULL );

     FREAcquireByteArray( objectByteArray, &byteArray );

   

     memcpy( byteArray.bytes, jpgData.bytes, jpgData.length );

   

     FREReleaseByteArray( objectByteArray );

       

     return NULL;

    }

S
shanlyticketsolveAuthorCorrect answer
Inspiring
December 17, 2011

Finale version - seems to work ok - encodes ok and I think cleans up after itself ok.

Sean

FREObject encodeJPEG( FREContext ctx, void* funcData, uint32_t argc, FREObject argv[] )

{

    FREObject       objectBitmapData = argv[ 0 ];

    FREBitmapData2  bitmapData;

   

    FREAcquireBitmapData2( objectBitmapData, &bitmapData );

   

    int width       = bitmapData.width;

    int height      = bitmapData.height;

    int stride      = bitmapData.lineStride32 * 4;

    uint32_t* input = bitmapData.bits32;

   

    // make data provider from buffer

    CGDataProviderRef provider = CGDataProviderCreateWithData(NULL, bitmapData.bits32, (width * height * 4), NULL);

   

    // set up for CGImage creation

    int                     bitsPerComponent    = 8;

    int                     bitsPerPixel        = 32;

    int                     bytesPerRow         = 4 * width;

    CGColorSpaceRef         colorSpaceRef       = CGColorSpaceCreateDeviceRGB();   

    CGBitmapInfo            bitmapInfo;

    if( bitmapData.hasAlpha )

    {

        if( bitmapData.isPremultiplied )

            bitmapInfo = kCGBitmapByteOrder32Little | kCGImageAlphaPremultipliedFirst;

        else

            bitmapInfo = kCGBitmapByteOrder32Little | kCGImageAlphaFirst;           

    }

    else

    {

        bitmapInfo = kCGBitmapByteOrder32Little | kCGImageAlphaNoneSkipFirst; 

    }

   

    CGColorRenderingIntent  renderingIntent     = kCGRenderingIntentDefault;

    CGImageRef              imageRef            = CGImageCreate(width, height, bitsPerComponent, bitsPerPixel, bytesPerRow, colorSpaceRef, bitmapInfo, provider, NULL, NO, renderingIntent);

    // make UIImage from CGImage

    UIImage *myImage = [UIImage imageWithCGImage:imageRef];   

    NSData* jpgData  = UIImageJPEGRepresentation( myImage, 0.9 );   

    FREReleaseBitmapData( objectBitmapData );

    FREObject    objectByteArray = argv[ 1 ];              

    FREByteArray byteArray;

    FREObject    length;

   

    FRENewObjectFromUint32( jpgData.length, &length );

    FRESetObjectProperty( objectByteArray, ( const uint8_t* ) "length", length, NULL );

    FREAcquireByteArray( objectByteArray, &byteArray );

   

    memcpy( byteArray.bytes, jpgData.bytes, jpgData.length );

   

    FREReleaseByteArray( objectByteArray );

       

    // release bits

    CGColorSpaceRelease(colorSpaceRef);

    CGImageRelease(imageRef);

    CGDataProviderRelease(provider);   

    return NULL;

}

Innovatology
Innovatology
Participating Frequently
December 15, 2011

Not sure, but I don't think you can access input and thus bitmapData.bits32 after you have called FREReleaseBitmapData().

Firefly Community Gallery
Adobe Firefly

Remix with Firefly Community Gallery

Thousands of free creations to fall in love with and remix in Firefly.

Explore now
Terms & ConditionsAccessibility statement
Using the community Terms of use Privacy Cookie preferences Do not sell or share my personal information ad choicesAdChoices