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标题: 求助 RGB转Bitmap [打印本页]

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作者: yya5119    时间: 2017-12-11 15:08
标题: 求助 RGB转Bitmap
求助 RGB转Bitmap 谢谢

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作者: 站长苏飞    时间: 2017-12-11 16:58
可以看看这个文章基本上就是上面写的方法
https://www.cnblogs.com/pengyingh/articles/2416332.html

[C#] 纯文本查看 复制代码

char* rgba = (char*)malloc(width*height*4);

for(int i=0; i < width*height; ++i) {

    rgba[4*i] = myBuffer[3*i];

    rgba[4*i+1] = myBuffer[3*i+1];

    rgba[4*i+2] = myBuffer[3*i+2];

    rgba[4*i+3] = 0;

}

CGColorSpaceRef colorSpace = CGColorSpaceCreateDeviceRGB();

CGContextRef bitmapContext = CGBitmapContextCreate(

    rgba,

    width,

    height,

    8, // bitsPerComponent

    4*width, // bytesPerRow

    colorSpace,

    kCGImageAlphaNoneSkipLast);



CFRelease(colorSpace);



CGImageRef cgImage = CGBitmapContextCreateImage(bitmapContext);

CFURLRef url = CFURLCreateWithFileSystemPath(kCFAllocatorDefault, CFSTR("image.png"), kCFURLPOSIXPathStyle, false);



CFStringRef type = kUTTypePNG; // or kUTTypeBMP if you like

CGImageDestinationRef dest = CGImageDestinationCreateWithURL(url, type, 1, 0);



CGImageDestinationAddImage(dest, cgImage, 0);



CFRelease(cgImage);

CFRelease(bitmapContext);

CGImageDestinationFinalize(dest);

free(rgba);

[C#] 纯文本查看 复制代码

int width = 11;

int height = 8;



Byte r[8][11]={

        {000,000,255,000,000,000,000,000,255,000,000},

        {000,000,000,255,000,000,000,255,000,000,000},  

        {000,000,255,255,255,255,255,255,255,000,000},

        {000,255,255,255,255,255,255,255,255,255,000},

        {255,255,255,255,255,255,255,255,255,255,255},

        {255,000,255,255,255,255,255,255,255,000,255},

        {255,000,255,000,000,000,000,000,255,000,255},

        {000,000,000,255,255,000,255,255,000,000,000}};



Byte g[8][11]={

        {000,000,255,000,000,000,000,000,255,000,000},

        {000,000,000,255,000,000,000,255,000,000,000},  

        {000,000,255,255,255,255,255,255,255,000,000},

        {000,255,255,000,255,255,255,000,255,255,000},

        {255,255,255,255,255,255,255,255,255,255,255},

        {255,000,255,255,255,255,255,255,255,000,255},

        {255,000,255,000,000,000,000,000,255,000,255},

        {000,000,000,255,255,000,255,255,000,000,000}};



Byte b[8][11]={

        {000,000,255,000,000,000,000,000,255,000,000},

        {000,000,000,255,000,000,000,255,000,000,000},  

        {000,000,255,255,255,255,255,255,255,000,000},

        {000,255,255,000,255,255,255,000,255,255,000},

        {255,255,255,255,255,255,255,255,255,255,255},

        {255,000,255,255,255,255,255,255,255,000,255},

        {255,000,255,000,000,000,000,000,255,000,255},

        {000,000,000,255,255,000,255,255,000,000,000}};



char* rgba = (char*)malloc(width*height*4);

int offset=0;

for(int i=0; i < height; ++i) 

{

        for (int j=0; j < width; j++) 

        {

                rgba[4*offset]   = r[j];

                rgba[4*offset+1] = g[j];

                rgba[4*offset+2] = b[j];

                rgba[4*offset+3] = 0;

                offset ++;

        }

}





CGColorSpaceRef colorSpace = CGColorSpaceCreateDeviceRGB();

CGContextRef bitmapContext = CGBitmapContextCreate(

    rgba,

    width,

    height,

    8, // bitsPerComponent

    4*width, // bytesPerRow

    colorSpace,

    kCGImageAlphaNoneSkipLast                    

);



CFRelease(colorSpace);



CGImageRef cgImage = CGBitmapContextCreateImage(bitmapContext);



free(rgba);



UIImage *newUIImage = [UIImage imageWithCGImage:cgImage];



UIImageView *iv = [[UIImageView alloc] initWithFrame:CGRectMake(10, 10, 11,8)];



[iv setImage:newUIImage];

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作者: 范范    时间: 2017-12-14 21:35
路过打个酱油

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