Add new comment

Copy memory buffer to BitmapData

I am trying to copy the unpacked image to a BitmapData object using copy_mem_image(), however it gives an error saying Access Violation. Where is the problem? My code is as follows:

int check = Processor1->dcraw_process();
libraw_processed_image_t *image = Processor1->dcraw_make_mem_image(&check);
int step;
step = image->width*(24/8)*3;
//create a bitmap with the image size
Bitmap^ pic = gcnew Bitmap(image->width, image->height);				
System::Drawing::Rectangle rect = System::Drawing::Rectangle(0,0,image->width,image->height);
BitmapData^ bmpData = pic->LockBits( rect, ImageLockMode::ReadWrite, PixelFormat::Format24bppRgb );
// Get the address of the first line.
IntPtr bmpPtr = bmpData->Scan0;
Processor1->copy_mem_image(&bmpPtr, step, 0);
// Unlock the bits.
pic->UnlockBits( bmpData );