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AmiDARK
Cairo : How to create an image from a memory RGBA/ARGB buffer ?
Posted on: 2012/1/24 17:21    #1
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Hi,

I've seen that I can create an image into Cairo from a PNG file but, I'd like to know how I can create an image from a memory buffer ?

Kindest Regards,
AmiDARK
All we have to decide is what to do with the time that is given to us.
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salass00
Re: Cairo : How to create an image from a memory RGBA/ARGB buffer ?
Posted on: 2012/1/24 18:27    #2
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cairo_surface_t *surface;
surface = cairo_image_surface_create_for_data(buffer,
    CAIRO_FORMAT_ARGB32, width, height, bpr);


Where buffer is the pointer to your ARGB buffer, width and height are the pixel dimensions of the surface to create and the bpr value is the bytes per row value (number of bytes to add to buffer pointer to get to the beginning of the next line). Unless your ARGB buffer has extra padding the bpr value should always be width*4.
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AmiDARK
Re: Cairo : How to create an image from a memory RGBA/ARGB buffer ?
Posted on: 2012/1/24 22:33    #3
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@Salass00 :
Thank you.
It's what I expected but as I'm french ... sometimes ... I'm not sure of my "english2French" translation :p

Regards,
AmiDARK
All we have to decide is what to do with the time that is given to us.
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