[Question] Is there "fromBuffer" method?

There is very useful and fast `toBuffer` method on canvas instance. But, is there somethign like `fromBuffer` method? I already have a buffer in rgb24 or rgb32 pixel format and I want to put it as image data on canvas. I noticed that putting it as `putImageData` is very slow, is there something equaly fast as `toBuffer`? Can I literally modify internal canvas's buffer from JavaScript environment?

Thanks.