如何解决 "ImageIO：JPEG应用程序传输的扫描线太少 "的问题？

Question

当我把图片保存到相册的时候，失败了。

error info: PEG Application transferred too few scanlines

有谁遇到过这种情况？谢谢。

// make data provider with data.
Float32 picSize = texture->image_size.width * texture->image_size.height * texture->bytesPerPixel;
NSLog(@"pic size:%f", picSize);
CGDataProviderRef provider = CGDataProviderCreateWithData(NULL, texture->data, texture->image_size.width * texture->image_size.height * texture->bytesPerPixel, NULL);

// prep the ingredients
int bitsPerComponent = 8;
int bitsPerPixel = 32;
int bytesPerRow = 4 * 320;
CGColorSpaceRef colorSpaceRef = CGColorSpaceCreateDeviceRGB();
CGBitmapInfo bitmapInfo = kCGBitmapByteOrderDefault;
CGColorRenderingIntent renderingIntent = kCGRenderingIntentDefault;

// make the cgimage
CGImageRef imageRef = CGImageCreate(320, 480, bitsPerComponent, bitsPerPixel, bytesPerRow, colorSpaceRef, bitmapInfo, provider, NULL, NO, renderingIntent);

// then make the uiimage from that
UIImage *myImage = [UIImage imageWithCGImage:imageRef];
UIImageWriteToSavedPhotosAlbum(myImage, self, nil, nil);

Answer 1

当我把一张灰度图像输入到一个期望是TrueColor的程序中时，我遇到了类似的错误信息