rgb原始数据转为uiimage

来源：互联网发布：下载淘宝网app 编辑：程序博客网时间：2024/05/20 18:51

1、

- (UIImage*)imageFromRGB565:(void*)rawData width:(int)width height:(int)height{    const size_t bufferLength = width * height * 2;    NSData *data = [NSData dataWithBytes:rawData length:bufferLength];        CGColorSpaceRef colorSpace = CGColorSpaceCreateDeviceRGB();    CGDataProviderRef provider = CGDataProviderCreateWithCFData((CFDataRef)data);        // Creating CGImage from cv::Mat    CGImageRef imageRef = CGImageCreate(width,          //width                                        height,         //height                                        5,              //bits per component                                        16,             //bits per pixel                                        width * 2,      //bytesPerRow                                        colorSpace,     //colorspace                                        kCGImageAlphaNoneSkipFirst | kCGBitmapByteOrder16Little,// bitmap info                                        provider,               //CGDataProviderRef                                        NULL,                   //decode                                        false,                  //should interpolate                                        kCGRenderingIntentDefault   //intent                                        );        // Getting UIImage from CGImage    UIImage *finalImage = [UIImage imageWithCGImage:imageRef];    CGImageRelease(imageRef);    CGDataProviderRelease(provider);    CGColorSpaceRelease(colorSpace);        return finalImage;}

2、CGColorSpaceRef colorSpace = CGColorSpaceCreateDeviceRGB();
    CGContextRef newContext = CGBitmapContextCreate(rgbbuffer,
                                                    width, height, 8,
                                                    width * bytes_per_pix,
                                                    colorSpace, kCGBitmapByteOrder32Little | kCGImageAlphaPremultipliedFirst);
    CGImageRef frame = CGBitmapContextCreateImage(newContext);
    self.imageview.image = [UIImage imageWithCGImage:frame];
    CGImageRelease(frame);
    CGContextRelease(newContext);
    CGColorSpaceRelease(colorSpace);

0 0